This document summarizes the design and testing of a water level sensor using a capacitive electrode implanted on a printed circuit board (PCB). The sensor uses 10 electrode fingers of increasing length on the PCB to measure water level capacitively. A signal conditioning circuit was also designed to process the capacitive signals from the electrodes. The sensor was tested in a lab setup using equipment like a multimeter and LCR meter. Test results showed the sensor's measured current and capacitance increased incrementally with rising water level from 0-30cm, demonstrating it can effectively be used to continuously monitor water level. The sensor achieved a transient response sensitivity of 0.0873ms/cm and resolution of 0.1cm over the tested
SENSOR NETWORK FOR REAL‐TIME MONITORING AND DETECTION CONTAMINATION IN DRINKI...ijiert bestjournal
This project presents the design and development of a low cost system for real time monitoring of drinking water quality at consumer sites. The system consists of several in-pipes Electrochemical and optical sensors and em phasis is given on low cost,lightweight implementation and reliable long time operation. Su ch implementation is suitable for large deployments enabling a sensor network approach for providing spatiotemporally rich data to water consumers,water companies and authorities. Extensive literature and market research is performed to identify low cost,on-line sensors that can reliably monitor several parameters which can be used to infer the water quality. In this project we overcome the drawback present in existing system by monitoring water quality prob lem for drinking water distribution systems as well as for consumer sites. Our approach is based on the development of low cost sensor nodes for real time and in-pipe monitoring and assessment of wa ter quality on the fly. The ma in sensor node consists of electrochemical and optical sens ors which can be used to mon itor the water quality. From the sensor node we are sending monitored values to control room (A RM board) through RS232 serial cable.
The different tools that are used for the implementation of this project are Arduino UNO, a flow sensor to measure flow rate, Solenoid valve to release or restrict flow of water, GSM Module and the software used is Embedded C.
Fredrick Ishengoma - A Novel Design of IEEE 802.15.4 and Solar Based Autonomo...Fredrick Ishengoma
The recently advancement in Wireless Sensor Network (WSN) technology has brought new distributed sensing applications such as water quality monitoring. With sensing capabilities and using parameters like pH, conductivity and temperature, the quality of water can be known. This paper proposes a novel design based on IEEE 802.15.4 (Zig-Bee protocol) and solar energy called Autonomous Water QualityMonitoring Prototype (AWQMP). The prototype is designed to use ECHERP routing protocol and Adruino Mega 2560, an open-source electronic prototyping platform for data acquisition. AWQMP is expected to give real time data acquirement and to reduce the cost of manual water quality monitoring due to its autonomous characteristic. Moreover, the proposed prototype will help to study the behavior of aquatic animals in deployed water bodies.
Smart meters are a major component of eco friendly home or building. Smart metering is required for the operation of the smart homes and buildings. The benefits of smart water metering have been recognized. A powerful approach for hour by hour monitoring and metering purposes in water networks is the automatic meter infrastructure AMI . Smart metering is now an established technology which can be applied to collect, store, and distribute real time data on water usage. This paper provides a brief introduction to the smart water metering. Matthew N. O. Sadiku | Adedamola A. Omotoso | Sarhan M. Musa "Smart Water Metering" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29223.pdf Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/29223/smart-water-metering/matthew-n-o-sadiku
SENSOR NETWORK FOR REAL‐TIME MONITORING AND DETECTION CONTAMINATION IN DRINKI...ijiert bestjournal
This project presents the design and development of a low cost system for real time monitoring of drinking water quality at consumer sites. The system consists of several in-pipes Electrochemical and optical sensors and em phasis is given on low cost,lightweight implementation and reliable long time operation. Su ch implementation is suitable for large deployments enabling a sensor network approach for providing spatiotemporally rich data to water consumers,water companies and authorities. Extensive literature and market research is performed to identify low cost,on-line sensors that can reliably monitor several parameters which can be used to infer the water quality. In this project we overcome the drawback present in existing system by monitoring water quality prob lem for drinking water distribution systems as well as for consumer sites. Our approach is based on the development of low cost sensor nodes for real time and in-pipe monitoring and assessment of wa ter quality on the fly. The ma in sensor node consists of electrochemical and optical sens ors which can be used to mon itor the water quality. From the sensor node we are sending monitored values to control room (A RM board) through RS232 serial cable.
The different tools that are used for the implementation of this project are Arduino UNO, a flow sensor to measure flow rate, Solenoid valve to release or restrict flow of water, GSM Module and the software used is Embedded C.
Fredrick Ishengoma - A Novel Design of IEEE 802.15.4 and Solar Based Autonomo...Fredrick Ishengoma
The recently advancement in Wireless Sensor Network (WSN) technology has brought new distributed sensing applications such as water quality monitoring. With sensing capabilities and using parameters like pH, conductivity and temperature, the quality of water can be known. This paper proposes a novel design based on IEEE 802.15.4 (Zig-Bee protocol) and solar energy called Autonomous Water QualityMonitoring Prototype (AWQMP). The prototype is designed to use ECHERP routing protocol and Adruino Mega 2560, an open-source electronic prototyping platform for data acquisition. AWQMP is expected to give real time data acquirement and to reduce the cost of manual water quality monitoring due to its autonomous characteristic. Moreover, the proposed prototype will help to study the behavior of aquatic animals in deployed water bodies.
Smart meters are a major component of eco friendly home or building. Smart metering is required for the operation of the smart homes and buildings. The benefits of smart water metering have been recognized. A powerful approach for hour by hour monitoring and metering purposes in water networks is the automatic meter infrastructure AMI . Smart metering is now an established technology which can be applied to collect, store, and distribute real time data on water usage. This paper provides a brief introduction to the smart water metering. Matthew N. O. Sadiku | Adedamola A. Omotoso | Sarhan M. Musa "Smart Water Metering" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29223.pdf Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/29223/smart-water-metering/matthew-n-o-sadiku
AN INTELLIGENT SMS BASED PREPAID WATER METERING SYSTEMpadma gade
The different tools that are used for the implementation of this project are Arduino UNO, a flow sensor to measure flow rate, Solenoid valve to release or restrict flow of water, GSM Module and the software used is Embedded C.
Real Time Water Quality Monitoring and Alert Systems, Applications using OPEX...RekaNext Capital
In complex engineering business, it is useful to consider a OPEX model rather than a CAPEX model. This is to protect the customer from complex technology risks, changing technologies. Customer pays for successful delivery of services rather than buying equipment.
In recent years, many of the bridges are monitored using non-destructive testing methods. These methods are used for checking the structural damage, wreckage, strength of the bridges. To reduce the human losses, economic losses, protect the strength and structure of bridge we are introducing a smart bridge monitoring using sensors where it gives high and low values depending upon the problem occurred in the bridge. Now a day we are in hike of power supply, so we are using Wireless Sensor Networks (WSN) technology for regular monitoring of the bridge which consumes less power with accurate values. This project describes the real time working and getting real time values. Outcome of the project is to bring a product based module. R. Dhivya Devi | S. Dinesh | S. Gowri Shankar | K. Ravi Teja"Pontem Monitoring using IoT" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd11517.pdf http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/11517/pontem-monitoring-using-iot/r-dhivya-devi
IoT Based Water Quality Monitoring System for Smart CitiesYogeshIJTSRD
Since from the last centuries, water has been affected due to many parameters and actions done by human beings. Due to these actions drinking water becomes dangerous and harmful with increase in living population and also due to global warming and changes in natural climate. So, in upcoming generation we need safe drinking water for all living things. For these safety measures we need to first monitor the quality of the drinking water. In earlier days, people used some manual types of measurements for monitoring the water. But it takes more time and it has less efficiency. So, we need a better idea to check the quality of the water because water is more essential for all living things. By considering all these necessities, we develop a new methodology for monitoring the quality of the given water using IOT environment with low level of cost and with high efficiency. We also ensure real time data value by developing a web application using wi fi module, which can be accessed at anywhere. A. Guna Selvi | S. Vibhithra | A. John Clement Sunder "IoT Based Water Quality Monitoring System for Smart Cities" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-3 , April 2021, URL: https://www.ijtsrd.com/papers/ijtsrd40058.pdf Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/40058/iot-based-water-quality-monitoring-system-for-smart-cities/a-guna-selvi
REMOWZ - Realtime Water Quality Monitoring using ZigBee based WSN (Part II)Nitin Balakrishnan
REMOWZ is a water monitoring system designed to collect the water parameters from the water resource via sensors. The sending of these sensor data is accomplished by the use of a ZigBee mesh network.
Get through this. Enjoy reading!
Metering and Analysis of Industrial Waste Waterusing Cloud Computingdbpublications
This paper deals about analysis of waste water affluent from Industries in an economical way. Industrial wastes generated through various industrial operations are of different chemical composition and complex to decompose. These wastes upon discharge, affect the normal life of a river stream or normal functioning of sewerage and sewage treatment plants, unless pre-treated at the source point itself. The waste water from industries have high proportion of suspended solids, dissolved organic and inorganic solids, COD, BOD, alkalinity or acidityalkalinity or acidity (pH levels), more temperature level. Their different constituents may not be in same proportion as they exist in a normal domestic sewage. This industrial waste water cannot always be treated easily by the normal methods used for treating domestic waste and certain specially designed methods or sequence of methods may be necessary. The detail study of effluents before discharge is necessary to reduce pollution and hence this paper is proposed. Metering also has been proposed to penalize industries if the waste content is beyond threshold levels. As a Case Study the analysis and metering of water is been carried out randomly by collecting water samples of Bellandur lake, the most popular lake in Bengaluru, at different time using sensors and storing the measured values in a cloud (AWS-Amazon cloud Server) via GPRS for further use by the Government.
The Internet of Things (IoT) has provided promising opportunities to create powerful industrial and domestic applications. One of its main applications is smart metering. The existing analogue meter in residential area requires consistent human monitoring, which leads to computational errors. Huge labor force, their negligence and money invested are the drawback of such meters. Therefore, a cost effective and low power smart-meter that can monitor the daily consumption of water in residential area need to be developed, in order to conserve water. Here in this research, SOC based smart water meter is developed to provide cost effective solution. Further, the developed system is implemented in real time to investigate the reliability and feasibility.
Design of a Long Range Wireless Sensor Network in Agriculture for Precision I...IJASRD Journal
Efficient and low power utilizing data synchronization is a challenging task for a Wireless-Sensor Network (WSN). Therefore, it is crucial to design a lightweight data synchronization protocols for these networks. An adaptive data offset prediction model for WSN is proposed in this project that exchanges fewer synchronization messages to improve the accuracy and efficiency. The proposed model is based on a tailored hardware and software aiming to extend both sensor nodes and WSN lifetime. The coordinator is aware of its sensor nodes available energy and such feature enables estimating the remaining lifetime of each sensor node. The sensor node system for data acquisition of long range is the conceptual model for a sensor node hardware and software system design, concerning energy management improving both sensor nodes and network lifetime .The experimental sensor nodes were employed to monitor soil moisture , temperature ,humidity and light sensor also the base station system model will validate in field conditions.
REMOTE SENSING AND CONTROL FOR ESTABLISHING AND MAINTAINING DIGITAL IRRIGATIONijait
The remotely sensed data from an unknown location is transmitted in real time through internet and gathered in a PC. The data is collected for a considerable period of time and analyzed in PC as to assess the suitability and fertility of the land for establishing an electronic plantation in that area. The analysis also helps deciding the plantation of appropriate plants in the location identified. The system performing this task with appropriate transducers installed in remote area, the methodologies involved in transmission and data gathering are reported.. The second part of the project deals with data gathering from remote site and issuing control signals to remote appliances in the site; all performed through internet. Therefore,
this control scheme is a duplex system monitoring the irrigation activities by collecting data in one direction and issuing commands on the opposite direction. This scheme maintains the digital irrigation systems effectively and efficiently as to utilize the resources optimally for yielding enhanced production.
The methodologies involved in extending the two way communication of data are presented.
Iot based water quality monitoring systemBinayakreddy
As per increase in water pollution there is need of controlling pollution in water is finished by monitoring water quality.
Our system consists of various sensors which will compute the standard values of water in real time for effective action and is accurate and only less manpower required.
IoT Based Water Management and Supervision SystemKaushik Gupta
Final Year Project
IoT Based Water Management and Supervision System -2019
Certification: Thakur Polytechnic
More Details on https://www.kaushikgupta.in
AN INTELLIGENT SMS BASED PREPAID WATER METERING SYSTEMpadma gade
The different tools that are used for the implementation of this project are Arduino UNO, a flow sensor to measure flow rate, Solenoid valve to release or restrict flow of water, GSM Module and the software used is Embedded C.
Real Time Water Quality Monitoring and Alert Systems, Applications using OPEX...RekaNext Capital
In complex engineering business, it is useful to consider a OPEX model rather than a CAPEX model. This is to protect the customer from complex technology risks, changing technologies. Customer pays for successful delivery of services rather than buying equipment.
In recent years, many of the bridges are monitored using non-destructive testing methods. These methods are used for checking the structural damage, wreckage, strength of the bridges. To reduce the human losses, economic losses, protect the strength and structure of bridge we are introducing a smart bridge monitoring using sensors where it gives high and low values depending upon the problem occurred in the bridge. Now a day we are in hike of power supply, so we are using Wireless Sensor Networks (WSN) technology for regular monitoring of the bridge which consumes less power with accurate values. This project describes the real time working and getting real time values. Outcome of the project is to bring a product based module. R. Dhivya Devi | S. Dinesh | S. Gowri Shankar | K. Ravi Teja"Pontem Monitoring using IoT" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd11517.pdf http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/11517/pontem-monitoring-using-iot/r-dhivya-devi
IoT Based Water Quality Monitoring System for Smart CitiesYogeshIJTSRD
Since from the last centuries, water has been affected due to many parameters and actions done by human beings. Due to these actions drinking water becomes dangerous and harmful with increase in living population and also due to global warming and changes in natural climate. So, in upcoming generation we need safe drinking water for all living things. For these safety measures we need to first monitor the quality of the drinking water. In earlier days, people used some manual types of measurements for monitoring the water. But it takes more time and it has less efficiency. So, we need a better idea to check the quality of the water because water is more essential for all living things. By considering all these necessities, we develop a new methodology for monitoring the quality of the given water using IOT environment with low level of cost and with high efficiency. We also ensure real time data value by developing a web application using wi fi module, which can be accessed at anywhere. A. Guna Selvi | S. Vibhithra | A. John Clement Sunder "IoT Based Water Quality Monitoring System for Smart Cities" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-3 , April 2021, URL: https://www.ijtsrd.com/papers/ijtsrd40058.pdf Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/40058/iot-based-water-quality-monitoring-system-for-smart-cities/a-guna-selvi
REMOWZ - Realtime Water Quality Monitoring using ZigBee based WSN (Part II)Nitin Balakrishnan
REMOWZ is a water monitoring system designed to collect the water parameters from the water resource via sensors. The sending of these sensor data is accomplished by the use of a ZigBee mesh network.
Get through this. Enjoy reading!
Metering and Analysis of Industrial Waste Waterusing Cloud Computingdbpublications
This paper deals about analysis of waste water affluent from Industries in an economical way. Industrial wastes generated through various industrial operations are of different chemical composition and complex to decompose. These wastes upon discharge, affect the normal life of a river stream or normal functioning of sewerage and sewage treatment plants, unless pre-treated at the source point itself. The waste water from industries have high proportion of suspended solids, dissolved organic and inorganic solids, COD, BOD, alkalinity or acidityalkalinity or acidity (pH levels), more temperature level. Their different constituents may not be in same proportion as they exist in a normal domestic sewage. This industrial waste water cannot always be treated easily by the normal methods used for treating domestic waste and certain specially designed methods or sequence of methods may be necessary. The detail study of effluents before discharge is necessary to reduce pollution and hence this paper is proposed. Metering also has been proposed to penalize industries if the waste content is beyond threshold levels. As a Case Study the analysis and metering of water is been carried out randomly by collecting water samples of Bellandur lake, the most popular lake in Bengaluru, at different time using sensors and storing the measured values in a cloud (AWS-Amazon cloud Server) via GPRS for further use by the Government.
The Internet of Things (IoT) has provided promising opportunities to create powerful industrial and domestic applications. One of its main applications is smart metering. The existing analogue meter in residential area requires consistent human monitoring, which leads to computational errors. Huge labor force, their negligence and money invested are the drawback of such meters. Therefore, a cost effective and low power smart-meter that can monitor the daily consumption of water in residential area need to be developed, in order to conserve water. Here in this research, SOC based smart water meter is developed to provide cost effective solution. Further, the developed system is implemented in real time to investigate the reliability and feasibility.
Design of a Long Range Wireless Sensor Network in Agriculture for Precision I...IJASRD Journal
Efficient and low power utilizing data synchronization is a challenging task for a Wireless-Sensor Network (WSN). Therefore, it is crucial to design a lightweight data synchronization protocols for these networks. An adaptive data offset prediction model for WSN is proposed in this project that exchanges fewer synchronization messages to improve the accuracy and efficiency. The proposed model is based on a tailored hardware and software aiming to extend both sensor nodes and WSN lifetime. The coordinator is aware of its sensor nodes available energy and such feature enables estimating the remaining lifetime of each sensor node. The sensor node system for data acquisition of long range is the conceptual model for a sensor node hardware and software system design, concerning energy management improving both sensor nodes and network lifetime .The experimental sensor nodes were employed to monitor soil moisture , temperature ,humidity and light sensor also the base station system model will validate in field conditions.
REMOTE SENSING AND CONTROL FOR ESTABLISHING AND MAINTAINING DIGITAL IRRIGATIONijait
The remotely sensed data from an unknown location is transmitted in real time through internet and gathered in a PC. The data is collected for a considerable period of time and analyzed in PC as to assess the suitability and fertility of the land for establishing an electronic plantation in that area. The analysis also helps deciding the plantation of appropriate plants in the location identified. The system performing this task with appropriate transducers installed in remote area, the methodologies involved in transmission and data gathering are reported.. The second part of the project deals with data gathering from remote site and issuing control signals to remote appliances in the site; all performed through internet. Therefore,
this control scheme is a duplex system monitoring the irrigation activities by collecting data in one direction and issuing commands on the opposite direction. This scheme maintains the digital irrigation systems effectively and efficiently as to utilize the resources optimally for yielding enhanced production.
The methodologies involved in extending the two way communication of data are presented.
Iot based water quality monitoring systemBinayakreddy
As per increase in water pollution there is need of controlling pollution in water is finished by monitoring water quality.
Our system consists of various sensors which will compute the standard values of water in real time for effective action and is accurate and only less manpower required.
IoT Based Water Management and Supervision SystemKaushik Gupta
Final Year Project
IoT Based Water Management and Supervision System -2019
Certification: Thakur Polytechnic
More Details on https://www.kaushikgupta.in
Evaluating IoT based passive water catchment monitoring system data acquisiti...journalBEEI
Water quality is the main aspect to determine the quality of aquatic systems. Poor water quality will pose a health risk for people and ecosystems. The old methods such as collecting samples of water manually and testing and analysing at lab will cause the time consuming, wastage of man power and not economical. A system is needed to provide a real-time data for environmental protection and tracking pollution sources. This paper aims to describe on how to monitor water quality continuously through IoT platform. Water Quality Catchment Monitoring System was introduced to check and monitor water quality continuously. It’s features five sensors which are temperature sensor, light intensity sensor, pH sensor, GPS tracker and Inertia Movement Unit (IMU). IMU is a new feature in the system where the direction of x and y is determined for planning and find out where a water quality problem exists by determining the flow of water. The system uses an internet wireless connection using the ESP8266 Wi-Fi Shield Module as a connection between Arduino Mega2560 and laptop. ThingSpeak application acts as an IoT platform used for real-time data monitoring.
Evaluating IoT based passive water catchment monitoring system data acquisiti...journalBEEI
Water quality is the main aspect to determine the quality of aquatic systems. Poor water quality will pose a health risk for people and ecosystems. The old methods such as collecting samples of water manually and testing and analysing at lab will cause the time consuming, wastage of man power and not economical. A system is needed to provide a real-time data for environmental protection and tracking pollution sources. This paper aims to describe on how to monitor water quality continuously through IoT platform. Water Quality Catchment Monitoring System was introduced to check and monitor water quality continuously. It’s features five sensors which are temperature sensor, light intensity sensor, pH sensor, GPS tracker and Inertia Movement Unit (IMU). IMU is a new feature in the system where the direction of x and y is determined for planning and find out where a water quality problem exists by determining the flow of water. The system uses an internet wireless connection using the ESP8266 Wi-Fi Shield Module as a connection between Arduino Mega2560 and laptop. ThingSpeak application acts as an IoT platform used for real-time data monitoring.
Implementation of sequential design based water level monitoring and controll...IJECEIAES
In currently decades, water usage either for domestic or commercial purposes is facing critical conditions which negatively affects the sustainability of our environment. From this point of view, reducing water consumptions will participate in the solution of water saving. Monitoring and controlling the tank water level are important functions which effect and work on reduction of water consumption. Many studies in literature focus on proposing a high performance water level monitoring and controlling systems based on either computerized units or microcontroller units. However these systems are characterized by complexity and high cost. In this paper, a highly flexible implemented electronic system is introduced based on sequential design by using general purpose discrete components. The proposed system present simple design of water level sensing stage, in addition, this paper showing full design, simulation, and implementation steps of an automation system which is able to control switching the state of the water pump in accordance to the current level of water in the tank.
Design, simulation and practical experimentation of miniaturized turbine flow...journalBEEI
Flow sensors are very essential in many aspects of our daily lives. Many of the industrial processes need a very consistent flow sensor to monitor and check for irregularities in their system. Therefore, flow sensor is an important tool for advanced operation in industrial environment. In this paper, the design and development of a 3D fabricated flow sensor was carried out using SolidWork 3D CAD. SolidWork Flow Simulation was used to model the effect the turbine flow sensor would have on a constant flowing water while MATLAB Simulink flow graph was created to visualize the effect of turbine flow sensor response with voltage input. Afterwards, the design was 3D printed using UP Plus 2 3D printer. The experimentation involved selection of sensors, coding to control the turbine flow sensor and automatic data logging and storage. During the design phase, the sensors and actuators were assembled using locally sourced material. Subsequently, under controlled laboratory environment, the turbine flow sensor was tested using a DC motor which was programmed to control the revolution per minute(rpm) of the turbine flow sensor. The rpm and velocity of the turbine flow meter was measured and stored in a database via Microsoft Excel using Cool Term Software. A total number of 517 readings were analysed to evaluate the performance of the turbine flow sensor. The result shows that the turbine flow meter is responsive to the motor input voltage and yielded accurate measurement of rpm and velocity of turbine flow meter.
Square transposition: an approach to the transposition process in block cipherjournalBEEI
The transposition process is needed in cryptography to create a diffusion effect on data encryption standard (DES) and advanced encryption standard (AES) algorithms as standard information security algorithms by the National Institute of Standards and Technology. The problem with DES and AES algorithms is that their transposition index values form patterns and do not form random values. This condition will certainly make it easier for a cryptanalyst to look for a relationship between ciphertexts because some processes are predictable. This research designs a transposition algorithm called square transposition. Each process uses square 8 × 8 as a place to insert and retrieve 64-bits. The determination of the pairing of the input scheme and the retrieval scheme that have unequal flow is an important factor in producing a good transposition. The square transposition can generate random and non-pattern indices so that transposition can be done better than DES and AES.
Hyper-parameter optimization of convolutional neural network based on particl...journalBEEI
Deep neural networks have accomplished enormous progress in tackling many problems. More specifically, convolutional neural network (CNN) is a category of deep networks that have been a dominant technique in computer vision tasks. Despite that these deep neural networks are highly effective; the ideal structure is still an issue that needs a lot of investigation. Deep Convolutional Neural Network model is usually designed manually by trials and repeated tests which enormously constrain its application. Many hyper-parameters of the CNN can affect the model performance. These parameters are depth of the network, numbers of convolutional layers, and numbers of kernels with their sizes. Therefore, it may be a huge challenge to design an appropriate CNN model that uses optimized hyper-parameters and reduces the reliance on manual involvement and domain expertise. In this paper, a design architecture method for CNNs is proposed by utilization of particle swarm optimization (PSO) algorithm to learn the optimal CNN hyper-parameters values. In the experiment, we used Modified National Institute of Standards and Technology (MNIST) database of handwritten digit recognition. The experiments showed that our proposed approach can find an architecture that is competitive to the state-of-the-art models with a testing error of 0.87%.
Supervised machine learning based liver disease prediction approach with LASS...journalBEEI
In this contemporary era, the uses of machine learning techniques are increasing rapidly in the field of medical science for detecting various diseases such as liver disease (LD). Around the globe, a large number of people die because of this deadly disease. By diagnosing the disease in a primary stage, early treatment can be helpful to cure the patient. In this research paper, a method is proposed to diagnose the LD using supervised machine learning classification algorithms, namely logistic regression, decision tree, random forest, AdaBoost, KNN, linear discriminant analysis, gradient boosting and support vector machine (SVM). We also deployed a least absolute shrinkage and selection operator (LASSO) feature selection technique on our taken dataset to suggest the most highly correlated attributes of LD. The predictions with 10 fold cross-validation (CV) made by the algorithms are tested in terms of accuracy, sensitivity, precision and f1-score values to forecast the disease. It is observed that the decision tree algorithm has the best performance score where accuracy, precision, sensitivity and f1-score values are 94.295%, 92%, 99% and 96% respectively with the inclusion of LASSO. Furthermore, a comparison with recent studies is shown to prove the significance of the proposed system.
A secure and energy saving protocol for wireless sensor networksjournalBEEI
The research domain for wireless sensor networks (WSN) has been extensively conducted due to innovative technologies and research directions that have come up addressing the usability of WSN under various schemes. This domain permits dependable tracking of a diversity of environments for both military and civil applications. The key management mechanism is a primary protocol for keeping the privacy and confidentiality of the data transmitted among different sensor nodes in WSNs. Since node's size is small; they are intrinsically limited by inadequate resources such as battery life-time and memory capacity. The proposed secure and energy saving protocol (SESP) for wireless sensor networks) has a significant impact on the overall network life-time and energy dissipation. To encrypt sent messsages, the SESP uses the public-key cryptography’s concept. It depends on sensor nodes' identities (IDs) to prevent the messages repeated; making security goals- authentication, confidentiality, integrity, availability, and freshness to be achieved. Finally, simulation results show that the proposed approach produced better energy consumption and network life-time compared to LEACH protocol; sensors are dead after 900 rounds in the proposed SESP protocol. While, in the low-energy adaptive clustering hierarchy (LEACH) scheme, the sensors are dead after 750 rounds.
Plant leaf identification system using convolutional neural networkjournalBEEI
This paper proposes a leaf identification system using convolutional neural network (CNN). This proposed system can identify five types of local Malaysia leaf which were acacia, papaya, cherry, mango and rambutan. By using CNN from deep learning, the network is trained from the database that acquired from leaf images captured by mobile phone for image classification. ResNet-50 was the architecture has been used for neural networks image classification and training the network for leaf identification. The recognition of photographs leaves requested several numbers of steps, starting with image pre-processing, feature extraction, plant identification, matching and testing, and finally extracting the results achieved in MATLAB. Testing sets of the system consists of 3 types of images which were white background, and noise added and random background images. Finally, interfaces for the leaf identification system have developed as the end software product using MATLAB app designer. As a result, the accuracy achieved for each training sets on five leaf classes are recorded above 98%, thus recognition process was successfully implemented.
Customized moodle-based learning management system for socially disadvantaged...journalBEEI
This study aims to develop Moodle-based LMS with customized learning content and modified user interface to facilitate pedagogical processes during covid-19 pandemic and investigate how teachers of socially disadvantaged schools perceived usability and technology acceptance. Co-design process was conducted with two activities: 1) need assessment phase using an online survey and interview session with the teachers and 2) the development phase of the LMS. The system was evaluated by 30 teachers from socially disadvantaged schools for relevance to their distance learning activities. We employed computer software usability questionnaire (CSUQ) to measure perceived usability and the technology acceptance model (TAM) with insertion of 3 original variables (i.e., perceived usefulness, perceived ease of use, and intention to use) and 5 external variables (i.e., attitude toward the system, perceived interaction, self-efficacy, user interface design, and course design). The average CSUQ rating exceeded 5.0 of 7 point-scale, indicated that teachers agreed that the information quality, interaction quality, and user interface quality were clear and easy to understand. TAM results concluded that the LMS design was judged to be usable, interactive, and well-developed. Teachers reported an effective user interface that allows effective teaching operations and lead to the system adoption in immediate time.
Understanding the role of individual learner in adaptive and personalized e-l...journalBEEI
Dynamic learning environment has emerged as a powerful platform in a modern e-learning system. The learning situation that constantly changing has forced the learning platform to adapt and personalize its learning resources for students. Evidence suggested that adaptation and personalization of e-learning systems (APLS) can be achieved by utilizing learner modeling, domain modeling, and instructional modeling. In the literature of APLS, questions have been raised about the role of individual characteristics that are relevant for adaptation. With several options, a new problem has been raised where the attributes of students in APLS often overlap and are not related between studies. Therefore, this study proposed a list of learner model attributes in dynamic learning to support adaptation and personalization. The study was conducted by exploring concepts from the literature selected based on the best criteria. Then, we described the results of important concepts in student modeling and provided definitions and examples of data values that researchers have used. Besides, we also discussed the implementation of the selected learner model in providing adaptation in dynamic learning.
Prototype mobile contactless transaction system in traditional markets to sup...journalBEEI
One way to prevent and reduce the spread of the covid-19 pandemic is through physical distancing program. This research aims to develop a prototype contactless transaction system using digital payment mechanisms and QR code technology that will be applied in traditional markets. The method used in the development of electronic market systems is a prototype approach. The application of QR code and digital payments are used as a solution to minimize money exchange contacts that are common in traditional markets. The results showed that the system built was able to accelerate and facilitate the buying and selling transaction process in traditional market environment. Alpha testing shows that all functional systems are running well. Meanwhile, beta testing shows that the user can very well accept the system that was built. The results of the study also show acceptance of the usefulness of the system being built, as well as the optimism of its users to be able to take advantage of this system both technologically and functionally, so its can be a part of the digital transformation of the traditional market to the electronic market and has become one of the solutions in reducing the spread of the current covid-19 pandemic.
Wireless HART stack using multiprocessor technique with laxity algorithmjournalBEEI
The use of a real-time operating system is required for the demarcation of industrial wireless sensor network (IWSN) stacks (RTOS). In the industrial world, a vast number of sensors are utilised to gather various types of data. The data gathered by the sensors cannot be prioritised ahead of time. Because all of the information is equally essential. As a result, a protocol stack is employed to guarantee that data is acquired and processed fairly. In IWSN, the protocol stack is implemented using RTOS. The data collected from IWSN sensor nodes is processed using non-preemptive scheduling and the protocol stack, and then sent in parallel to the IWSN's central controller. The real-time operating system (RTOS) is a process that occurs between hardware and software. Packets must be sent at a certain time. It's possible that some packets may collide during transmission. We're going to undertake this project to get around this collision. As a prototype, this project is divided into two parts. The first uses RTOS and the LPC2148 as a master node, while the second serves as a standard data collection node to which sensors are attached. Any controller may be used in the second part, depending on the situation. Wireless HART allows two nodes to communicate with each other.
Implementation of double-layer loaded on octagon microstrip yagi antennajournalBEEI
A double-layer loaded on the octagon microstrip yagi antenna (OMYA) at 5.8 GHz industrial, scientific and medical (ISM) Band is investigated in this paper. The double-layer consist of two double positive (DPS) substrates. The OMYA is overlaid with a double-layer configuration were simulated, fabricated and measured. A good agreement was observed between the computed and measured results of the gain for this antenna. According to comparison results, it shows that 2.5 dB improvement of the OMYA gain can be obtained by applying the double-layer on the top of the OMYA. Meanwhile, the bandwidth of the measured OMYA with the double-layer is 14.6%. It indicates that the double-layer can be used to increase the OMYA performance in term of gain and bandwidth.
The calculation of the field of an antenna located near the human headjournalBEEI
In this work, a numerical calculation was carried out in one of the universal programs for automatic electro-dynamic design. The calculation is aimed at obtaining numerical values for specific absorbed power (SAR). It is the SAR value that can be used to determine the effect of the antenna of a wireless device on biological objects; the dipole parameters will be selected for GSM1800. Investigation of the influence of distance to a cell phone on radiation shows that absorbed in the head of a person the effect of electromagnetic radiation on the brain decreases by three times this is a very important result the SAR value has decreased by almost three times it is acceptable results.
Exact secure outage probability performance of uplinkdownlink multiple access...journalBEEI
In this paper, we study uplink-downlink non-orthogonal multiple access (NOMA) systems by considering the secure performance at the physical layer. In the considered system model, the base station acts a relay to allow two users at the left side communicate with two users at the right side. By considering imperfect channel state information (CSI), the secure performance need be studied since an eavesdropper wants to overhear signals processed at the downlink. To provide secure performance metric, we derive exact expressions of secrecy outage probability (SOP) and and evaluating the impacts of main parameters on SOP metric. The important finding is that we can achieve the higher secrecy performance at high signal to noise ratio (SNR). Moreover, the numerical results demonstrate that the SOP tends to a constant at high SNR. Finally, our results show that the power allocation factors, target rates are main factors affecting to the secrecy performance of considered uplink-downlink NOMA systems.
Design of a dual-band antenna for energy harvesting applicationjournalBEEI
This report presents an investigation on how to improve the current dual-band antenna to enhance the better result of the antenna parameters for energy harvesting application. Besides that, to develop a new design and validate the antenna frequencies that will operate at 2.4 GHz and 5.4 GHz. At 5.4 GHz, more data can be transmitted compare to 2.4 GHz. However, 2.4 GHz has long distance of radiation, so it can be used when far away from the antenna module compare to 5 GHz that has short distance in radiation. The development of this project includes the scope of designing and testing of antenna using computer simulation technology (CST) 2018 software and vector network analyzer (VNA) equipment. In the process of designing, fundamental parameters of antenna are being measured and validated, in purpose to identify the better antenna performance.
Transforming data-centric eXtensible markup language into relational database...journalBEEI
eXtensible markup language (XML) appeared internationally as the format for data representation over the web. Yet, most organizations are still utilising relational databases as their database solutions. As such, it is crucial to provide seamless integration via effective transformation between these database infrastructures. In this paper, we propose XML-REG to bridge these two technologies based on node-based and path-based approaches. The node-based approach is good to annotate each positional node uniquely, while the path-based approach provides summarised path information to join the nodes. On top of that, a new range labelling is also proposed to annotate nodes uniquely by ensuring the structural relationships are maintained between nodes. If a new node is to be added to the document, re-labelling is not required as the new label will be assigned to the node via the new proposed labelling scheme. Experimental evaluations indicated that the performance of XML-REG exceeded XMap, XRecursive, XAncestor and Mini-XML concerning storing time, query retrieval time and scalability. This research produces a core framework for XML to relational databases (RDB) mapping, which could be adopted in various industries.
Key performance requirement of future next wireless networks (6G)journalBEEI
Given the massive potentials of 5G communication networks and their foreseeable evolution, what should there be in 6G that is not in 5G or its long-term evolution? 6G communication networks are estimated to integrate the terrestrial, aerial, and maritime communications into a forceful network which would be faster, more reliable, and can support a massive number of devices with ultra-low latency requirements. This article presents a complete overview of potential 6G communication networks. The major contribution of this study is to present a broad overview of key performance indicators (KPIs) of 6G networks that cover the latest manufacturing progress in the environment of the principal areas of research application, and challenges.
Noise resistance territorial intensity-based optical flow using inverse confi...journalBEEI
This paper presents the use of the inverse confidential technique on bilateral function with the territorial intensity-based optical flow to prove the effectiveness in noise resistance environment. In general, the image’s motion vector is coded by the technique called optical flow where the sequences of the image are used to determine the motion vector. But, the accuracy rate of the motion vector is reduced when the source of image sequences is interfered by noises. This work proved that the inverse confidential technique on bilateral function can increase the percentage of accuracy in the motion vector determination by the territorial intensity-based optical flow under the noisy environment. We performed the testing with several kinds of non-Gaussian noises at several patterns of standard image sequences by analyzing the result of the motion vector in a form of the error vector magnitude (EVM) and compared it with several noise resistance techniques in territorial intensity-based optical flow method.
Modeling climate phenomenon with software grids analysis and display system i...journalBEEI
This study aims to model climate change based on rainfall, air temperature, pressure, humidity and wind with grADS software and create a global warming module. This research uses 3D model, define, design, and develop. The results of the modeling of the five climate elements consist of the annual average temperature in Indonesia in 2009-2015 which is between 29oC to 30.1oC, the horizontal distribution of the annual average pressure in Indonesia in 2009-2018 is between 800 mBar to 1000 mBar, the horizontal distribution the average annual humidity in Indonesia in 2009 and 2011 ranged between 27-57, in 2012-2015, 2017 and 2018 it ranged between 30-60, during the East Monsoon, the wind circulation moved from northern Indonesia to the southern region Indonesia. During the west monsoon, the wind circulation moves from the southern part of Indonesia to the northern part of Indonesia. The global warming module for SMA/MA produced is feasible to use, this is in accordance with the value given by the validate of 69 which is in the appropriate category and the response of teachers and students through a 91% questionnaire.
An approach of re-organizing input dataset to enhance the quality of emotion ...journalBEEI
The purpose of this paper is to propose an approach of re-organizing input data to recognize emotion based on short signal segments and increase the quality of emotional recognition using physiological signals. MIT's long physiological signal set was divided into two new datasets, with shorter and overlapped segments. Three different classification methods (support vector machine, random forest, and multilayer perceptron) were implemented to identify eight emotional states based on statistical features of each segment in these two datasets. By re-organizing the input dataset, the quality of recognition results was enhanced. The random forest shows the best classification result among three implemented classification methods, with an accuracy of 97.72% for eight emotional states, on the overlapped dataset. This approach shows that, by re-organizing the input dataset, the high accuracy of recognition results can be achieved without the use of EEG and ECG signals.
Parking detection system using background subtraction and HSV color segmentationjournalBEEI
Manual system vehicle parking makes finding vacant parking lots difficult, so it has to check directly to the vacant space. If many people do parking, then the time needed for it is very much or requires many people to handle it. This research develops a real-time parking system to detect parking. The system is designed using the HSV color segmentation method in determining the background image. In addition, the detection process uses the background subtraction method. Applying these two methods requires image preprocessing using several methods such as grayscaling, blurring (low-pass filter). In addition, it is followed by a thresholding and filtering process to get the best image in the detection process. In the process, there is a determination of the ROI to determine the focus area of the object identified as empty parking. The parking detection process produces the best average accuracy of 95.76%. The minimum threshold value of 255 pixels is 0.4. This value is the best value from 33 test data in several criteria, such as the time of capture, composition and color of the vehicle, the shape of the shadow of the object’s environment, and the intensity of light. This parking detection system can be implemented in real-time to determine the position of an empty place.
Quality of service performances of video and voice transmission in universal ...journalBEEI
The universal mobile telecommunications system (UMTS) has distinct benefits in that it supports a wide range of quality of service (QoS) criteria that users require in order to fulfill their requirements. The transmission of video and audio in real-time applications places a high demand on the cellular network, therefore QoS is a major problem in these applications. The ability to provide QoS in the UMTS backbone network necessitates an active QoS mechanism in order to maintain the necessary level of convenience on UMTS networks. For UMTS networks, investigation models for end-to-end QoS, total transmitted and received data, packet loss, and throughput providing techniques are run and assessed and the simulation results are examined. According to the results, appropriate QoS adaption allows for specific voice and video transmission. Finally, by analyzing existing QoS parameters, the QoS performance of 4G/UMTS networks may be improved.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
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Capacitive electrode sensor implanted on a printed circuit board designed for… (Salami Ifedapo Abdullahi)
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level sensors is making use of the charge separation in a parallel plate which induces an internal electric field
while the liquid acts as a dielectric which reduces the field and increases the capacitance realised at those
specific points. Despite this, contact water level measurement has proven itself to be more resilient under
vigorous conditions while being more cost-effective and offering a reasonable precision compared to
contactless and optical fiber water level sensors.
Consecutively, capacitive type liquid level sensors were presented in various other papers while
their wide acceptance in the market has shown to have significant impact in hydroponics, controlling material
position and decomposition of multi-phase liquids as presented in [10-15]. Fiber Bragg Grating is an
extension of optical fiber filter offering a higher precision with continuous level monitoring at the expense of
having increased costs and the need for recalibration for different kinds of liquids [16]. [17] discussed on the
usage of capacitive water sensor to measure water level in a controlled laboratory experiment. The core
element of the electrode sensor are the electrode fingers which acts as interdigitated sensors to sense a slight
change in capacitive effect due to the presence of aqueous liquid. Thus, this detection enables the continuous
water level measurement of the electrode sensor. Furthermore, [18] had used fuzzy algorithm to determine
the river water quality. By doing so, it eliminates the use of manual methods to get water tested by reducing
the use of physical labour and lessening the possibility of human error. Genetic algorithm was embedded
together with fuzzy system to make detection of water quality faster and simpler. [19] suggested an
alternative means of benefiting from measuring flow of water by carrying out simulation with a turbine flow
sensor. This method ensures continuous flow measurement to make sure rising water depth in a system can
be sensed on time.
Consecutively, [20] designed a method to control liquid level in an industrial setting. The concept
made use of fuzzy controller to optimize a system that can control non-linear processes of a water tank
container. [21] made use of water level sensor to measure water level in a system built to manage flood
disaster alert. Water level sensor were important in this study as it enabled an inexpensive way for water
level monitoring to be achieved. [22] made a real-time monitoring of water height at different intervals. The
system made use of a camera as a visual guide to support the water level monitoring system. The
functionality of the system relies on both an android based graphical user interface which snap pictures at
pre-set intervals to record the water level. This gave real time information of the water level and gives a
visual image in case of a system breakdown. Since water level monitoring has been discussed elaboratively,
it is mandator to relate the impact of weather condition on the measurement of water level. However, the
rainfall pattern can also be measured with adequate set-up of water level monitoring tools and equipment.
This will gather enough information which can be used to predict and reduce rain attenuation for Earth-Space
Satellite communication [23]. The ability to collect adequate data of rainwater level would greatly help to
identify geographical areas that are mostly affected by high amount of rain pour which could lead to
unwanted rain attenuation.
Among the main advantages of capacitance liquid level sensors is their precision and stability in
measuring liquid level and their low maintenance costs. This paper describes the design and testing of a water
level measurement system based on a capacitive effect with parallel electrode fingers of uniformly increasing
length on a printed circuit board (PCB). The capacitance between parallel electrode fingers on the printed
circuit board depends on the water height. Similarly, as seen in Figure 1 showed the driven element which is
the positive side of the plate and the sensing element which is the negative side of the plate as it creates a
fringe effect, making the gap to be seen between the measured capacitance and calculated capacitance.
Furthermore, it was important to fabricate a signal conditioning circuit to help in data acquisition process
from each electrode finger as water rises above them. The electrode water level sensor has been thoroughly
tested and proven to work efficiently under both static and dynamic conditions. Therefore,it is convincing
that the water level sensor can be applied in implementing a flood monitoring system. The electrode sensor
was tested on its capacitive effect while also making sure the laboratory experiment is carried on under a
controlled condition. Arduino microcontroller was also used to test the efficiency of the water level sensor.
Figure 1. Working mechanism of two parallel capacitive electrode on a PCB
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2. RESEARCH METHOD
2.1. PCB circuit design and fabrication of sensor
The software enabler used is Microsoft Word 2010 Edition to sketch the circuit that will be
imprinted on the PCB board which was used instead of more advanced circuit design software such as Eagle
due to the simplicity of the circuit layout. Figure 2 shows the process undertaken for the fabrication of the
sensor. The circuit layout was printed using a laser printer on a transparent A4 size paper and its
specifications were used for measurement of the electrode fingers as shown in Figure 3(a). Then, the printed
image was transferred onto a prepared FR-4 substrate PCB. The printed image was bonded onto the copper
plate using a photoplatter machine, after which it was placed inside the UV insulator machine for 180
seconds to irradiate the PCB with UV light. The copper plate was removed from the UV insulator chamber
and the printed image was removed from it. The copper was cleaned with photorevelator and rinsed with
distilled water before it was submerged into a bowl of ferric chloride acid to etch the part destroyed by UV
irradiation. The board is taken out after 15 minutes when all the unnecessary copper is etched away from the
board. A fine sand paper was used to remove all insulating drawing materials used on the board leaving
behind the electrode finger lines. Another copper plate was cut exactly with the same measurement as the
copper electrode sensor was prepared to be used as the reference electrode.
Figure 2. Process flow for the fabrication of electrode sensor
After the PCB sensor had been fabricated, single-core tinned copper wires of length ~58 cm and
diameter 0.055 cm were soldered to the top end of each electrode finger for data acquisition as shown in
Figure 2. The electrode sensor and reference electrode have a height of 31 cm, breadth of 2.7 cm and a width
of 0.2 cm. The average spacing between each electrode finger is 0.2 cm while the thickness of each one is 0.3
cm. Each electrode finger was made to have an increasing length of 3 cm and the electrode sensor was built
with 5 sensing electrodes on each side of the copper plate for a total of 10 water levels as shown in Figure
3(b) and Figure 3(c). This design reduces the number of copper plates that need to be used for a single sensor.
Additionally, the electrode capacitive sensor in this paper took a few design features and specifications from
previous work of Chetpattananondh et al. (2014) in the reference list of this article, including the length of 31
cm for the longest electrode finger. The width of the electrode sensor is fixed according to the manufacturer
specifications for the PCB. The breadth was set to 2.7cm in order to fit 5 electrode fingers on each side of the
electrode sensor.
4. Bulletin of Electr Eng and Inf ISSN: 2302-9285
Capacitive electrode sensor implanted on a printed circuit board designed for… (Salami Ifedapo Abdullahi)
453
Figure 3. (a) Printed circuit on the transparent A4 size paper for illustration purpose only, (b) back-side of
electrode sensor, (c) front-side of electrode sensor [17]
2.2. Signal conditioning circuit design
The signal conditioning circuit board was built to process the signal that comes from the sensing
electrode and produce digital information that is understandable by the microprocessor. It consists of a
pre-cut donut board with a fixed number of resistors, transistor and male connectors. The circuit consists of a
total of 10 2N2222 NPN bipolar junction transistors for switching on the electrode sensor, plus 10x470 ohms
resistors, 10x220 ohms resistors and 10x22000 ohms resistors soldered together to reduce current flow. 20
male connectors are used which enable the connection of the female connectors from the electrode wires
coming from the sensing electrode sensor to accommodate connections to the microprocessor and the linking
electrode wires. Figure 4(a) showed that 3 male connectors were specifically made for the connection of the
reference electrode, input voltage and ground to the microprocessor. The signal conditioning circuit placed
on the donut board has a length of 14.5 cm, breadth of 6.3 cm and thickness of 0.2 cm. The schematic
diagram for the three-water level signal conditioning circuit with the reference electrode is shown at Figure
4(a) and a capture of the fabricated signal conditioning circuit is pictured at Figure 4(b).
(a) (b)
Figure 4. (a) the connection of signal conditioning circuit board to the microprocessor (Arduino Uno), (b)
Fabricated signal conditioning circuit [17]
2.3. Experimental setup and testing of electrode sensor
The basic experimental set-up to measure the capacitance of the electrode sensor consists of a
laboratory DC power supply, a digital multimeter, an LCR meter and a 5.5-liter plastic container with a
height of 34 cm and diameter of 21 cm. PVC pipe of height 34 cm and diameter of 2.8 cm was screwed in at
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the bottom of the container to enable tap water to flow into the container. The two probes connected between
the signal conditioning circuit and the DC power supply were done to provide power, while two other probes
were used as a connection between the digital multimeter and the electrode finger under test. This
configuration allowed the measurement of current at each electrode finger with a supply of only 5 volts from
the DC power supply. The capacitance of each electrode finger is measured using the combination of the
LCR meter, reference electrode and the electrode sensor as displayed in Figure 5. The experiment was carried
out by firmly attaching the reference electrode and electrode sensor at opposite edges of the plastic container
using double sided tape as adhesive, connecting two probes to the positive and negative input of the LCR
meter, the positive end of the probe (red color) connected to the reference electrode and the negative end of
the probe (black color) connected to each electrode finger being tested. The frequency chosen on the LCR
meter is 1Khz and the mode of measure is in nano-farads.
Finally, the electrode sensors, signal conditioning circuit board and Arduino Uno were connected as
in Figure 5 in order to calibrate the electrode sensor reading of the water level using the output voltage from
each electrode finger transducer. The actual water levels were observed and marked on the container while
the measured water levels were recorded by the Arduino Uno controller and read via the Arduino Serial
monitor. Functional program code for the electrode sensor was written inside Arduino IDE. Additionally, an
interrupt in the program code enabled the transient response time for each capacitive electrode finger to be
measured. The experiment was repeated 5 times under a standardized environment for a fair comparison
between the measured and actual water level readings. Table 1 shows the permittivity and conductivity of tap
water and FR-4 substrate.
(a) (b)
(c)
Figure 5. (a) DC power supply, (b) Signal conditioning circuit connected to digital multimeter, (c) Set-up for
measuring capacitance [17]
Table 1. Permittivity and conductivity of dielectric material
Dielectric Material Permittivity(Farad/m)
Tap Water 80
FR-4 substrate 4.4
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3. RESULTS AND ANALYSIS
Figure 6 showed the electrode water level sensor under evaluation which each electrode finger
current was compared with water level. Under the same settings, Figure 7 showed the capacitance of each
electrode finger as it was compared with water level. A steady increment of measured current from 23nA to
61.1nA was observed as water level is gradually increased from 0 cm to 30 cm. the result also showed that
the measured capacitance rises from 0nF to 13.605nF in an incremental order when water level gradually
increased from 0cm to 15cm but the readings plunged and kept an unsteady pattern in the graph from
4.949nF to 5.629nF as water level increased from 15 cm to 30cm at an increasing pace. Accidental parasitic
capacitive coupling between the electrode fingers of water level from 15 cm to 30 cm can caused this to
occur. The measured capacitance is noisy and lessened because of the capacitive coupling that occurs in this
period. This is an effect that can be reduced by separating the electrode fingers significantly or by adding a
line electrode in between the electrode fingers which keeps the electrode fingers capacitively coupled to the
ground rather than to each other. Alternatively, the effects of capacitive coupling can be diminished by
placing a decoupling capacitor between the input voltage and the reference voltage. High impedance which is
supposed to be decreasing as the water level increases from 15 cm to 30 cm might be another potential reason
for the huge drop in the measured capacitance.
The relationship between current (i) and capacitance (C) is showed in (1) and (2) illustrating clearly
that each electrode finger capacitor and the reference capacitor were being charged (Q) until they reached the
maximum supplied voltage (V) of the DC power supply in function of time (t).
(1)
(2)
A mathematical expression to manually calculate the capacitance for each electrode finger is
depicted in (3) as provided in Mamishev et al.(2004).
(3)
where is the permittivity of free space, is the permittivity of water, n is the number of electrode fingers,
is the overlap length, h is the electrode height and w is the space between electrodes. The regression
analysis for the measured data from the experimentation done on the electrode water level sensor was carried
out using MedCalc statistical software. The results gave a multiple correlation coefficient of 0.9210 with the
measured current readings having a P-value of 0.0002 and the measured capacitance readings having a
P-value of 0.0140. The multiple correlation coefficient uses the best linear predictors that are indicative of a
higher predictability of water level reading from the measured data while P-values < 0.05 are indicative of
very good explainable variations between the values of the measured data.
Figure 6. Experimental result of measured current as a function of water level [17]
0
10
20
30
40
50
60
70
0 5 10 15 20 25 30
Electrode
Current
(nA)
Water Level(m)
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Figure 7. Experimental result of measured capacitance as a function of water level [17]
The linearity test was conducted by observing and comparing the deviation between the measured
water level and actual water level (Figure 8). The minimum error is 0 cm when there is no presence of water
and the maximum error is 0.3 cm when water level is 30cm. The mean error is 0.1 cm over the level range of
30cm. The reason for this linearity error might be because of the non-uniformity of electric field at the end of
the electrode. Other factor that might add to this error might be due to the program code inability to
differentiate between closely related measured variables that corresponds to different levels. The transient
response is a measure of how fast the electrode capacitor charges up voltage. Therefore, Figure 9 showed the
relationship of the water level in function of recorded response time of each electrode finger. The mean
response time is 2.073 milliseconds which showed that the electrodes charges up fast in response to supplied
voltage. (4) shows the mathematical expression of transient response in terms of a resistor (R) in series with a
capacitor (C) and the response time ( ) which is measured in seconds. Linear regression of actual water level
and transient response were examined as shown in Figure 10. Coefficient of determination ( produced a
value of 0.8666 with a P-value of 0.004 which shows strong relationship between the data. (5) validates the
linear least square expression of the response time against water level. The sensitivity is 0.0873
milliseconds/cm with an offset error of 0.763 due to processing time of the microcontroller.
(4)
(5)
where y is response time and is water level.
Figure 8. Experimental result of linearity error against water level
0
2
4
6
8
10
12
14
16
0 5 10 15 20 25 30
Electrode
Capacitance
(nF)
Water level (m)
0
0,05
0,1
0,15
0,2
0,25
0,3
0,35
0 5 10 15 20 25 30
Linearity
error(cm)
Water level(cm)
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Figure 9. Experimental result of sensor response time against water level
Figure 10. Fitting curve to the experimental data by regression line
The minimum input voltage for the electrode sensor is 2.5 volts while the microprocessor output 5
volts. Hence, this means that the electrode sensor used a limited amount of voltage. The maximum current
that Arduino can withstand is 200mA while the electrode sensor maximum dissipated current is 61.1nA
which is reasonably lower than the Arduino threshold. In addition, when there is no presence of water, the
electrode sensor only seeps 1.035 volts which means it uses little voltage when it is in idle state. The
electrode sensor measured resistance was measured to be 5.5 kilo-ohms when there is water while the
resistance is infinity when there is no water. The power consumed by the electrode sensor is 30.3mW when
the voltage utilised is 5 volts. As the electrode sensor make use of the conductivity of tap water to measure
water level, over a long period of time the copper plate will start to decay slowly. Lastly, the electrode sensor
has been tested in a flood simulation environment in Abdullahi, Habaebi, Gunawan & Islam (2017) and it has
proven to be effective in practical experimental test.
4. CONCLUSION
A capacitive sensor that can measure water level is very important as it continuously measures water
level with the increase in volume of water. This makes them to be able to detect even a slight increment in
water level as the mode of measurement is based on the capacitive effects and current measurements from
each electrode finger. This paper has been able to develop a novel electrode water level sensor which is able
to measure water level from 0 cm up until 30 cm in height. Electrode finger which act as an electrode traces
allowed the readings of water level which have a mean offset error of 0.1 cm. Tap water was the only means
for the testing of this electrode water level sensor but it’s usage can be extend to other non-viscous liquids. A
0
0,5
1
1,5
2
2,5
3
0 5 10 15 20 25 30
Electrode
response
time
(milliseconds)
Water level (cm)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 5 10 15 20 25 30
Water level (cm)
Electrode
response
time
(millisecond)
y = 0.763 + 0.0873 x
n = 11
r = 0.93; P < 0.001
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1 millisecond mean response time for the electrode sensor showed that it is relatively fast to detect water
presence as well as it is sensitive to small changes in water level. The electrode water level sensor is built to
be compact and light to enable easier deployment in areas where large water level sensors are not applicable.
The electrode water level remains functional while it is also effective at taking fine measurements of level
rise of liquid substances. In the future, it will be advantageous for further testing of the electrode water level
to be applied to different liquids and mixture that exist in chemical plants.
ACKNOWLEDGEMENTS
This work was conducted at the IOT and Wireless Communication Protocols Lab, and is partially
funded by IIUM Publication RIGS grant no. P-RIGS19-003-0003 and the Malaysian Ministry of Education
(MOE) research fund No. FRGS16-067-0566.
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BIOGRAPHIES OF AUTHORS
Abdullahi Salami recently acquired his Bachelor’s degree in Telecommunication Engineering
from International Islamic University Malaysia in 2018 and he is pursuing his Master in
Telecommunication Engineering in International Islamic University Malaysia. His research
interests are towards the fields of Telecommunications, Internet of Things, Data Analytics and
Electronics. E-mail address:abdusalife@gmail.com
Mohamed Hadi Habaebi is with the department of electrical and Computer Engineering,
International Islamic University Malaysia. His research interests are in IoT, wireless
communications and Networking.
Noreha Abdul Malik received her BEng in Medical Electronics from University of Technology
Malaysia (2001) and later pursued her MEng in Communication and Computer Engineering at
National University of Malaysia (2004). She later received her PhD in Electronics and Electrical
Engineering from University of Southampton, United Kingdom (2011). She is currently an
assistant professor at International Islamic University Malaysia (IIUM). Her research interests
are in biomedical signal processing and biomedical applications. She is a member of Institute of
Engineers Malaysia (IEM) and Board of Engineer Malaysia (BEM).