This document discusses occupancy and vacancy sensors. It describes the different types of occupancy sensors including wall switch, ceiling mount, and wall mount. It also discusses the different sensor technologies used in occupancy sensors such as passive infrared, ultrasound, and dual technology sensors. Applications of occupancy sensors in areas like bedrooms, offices, and hotel rooms are provided.
The document discusses the accelerometer and gyroscope sensors found in smartphones and their uses. The accelerometer measures device orientation and gravity while the gyroscope detects rotation along three axes. Together, they provide precise six-axis motion sensing by combining the three axes of each. This detailed motion data is used for camera image stabilization, gaming input, navigation apps, and general user interface interaction.
This document discusses various types of pressure transducers, including mechanical and electrical types. Mechanical transducers use an elastic element like a bourdon tube, bellows, or diaphragm to convert pressure to displacement. Electrical transducers add an electric element to convert the mechanical displacement to an electrical signal. Common electric elements are piezoelectric materials, strain gauges, capacitors, and inductive coils. Piezoelectric transducers actively generate a voltage in response to pressure, while other electrical transducers like strain gauges are passive and require an external power source to modulate their electrical properties.
Gyroscope sensors measure angular velocity by detecting the Coriolis effect on a vibrating mass. They have specifications including measurement range, number of sensing axes, nonlinearity, temperature range, and noise parameters. MEMS gyroscopes typically use a vibrating proof mass driven electrostatically while rotation is detected via sense electrodes measuring the Coriolis-induced deflection perpendicular to the drive mode. The Coriolis effect causes an apparent deflection in a rotating reference frame due to inertial forces.
The document discusses gyroscopes, including what they are, their uses, types, and applications. A gyroscope is a device that uses angular momentum to detect orientation and maintain its axis of rotation. It consists of a spinning mass on an axle. Gyroscopes are used for ship compasses, stability assistance in spacecraft and bikes, and inertial guidance systems. Practical applications include improving helicopter stability. Types include rotary, fiber optic, and MEMS gyroscopes. Gyroscope applications include consumer electronics like the Wii remote, smart phones for gaming input and screen orientation, and laptops for free fall detection. Gyroscopes are also used in measuring athletic movement and sensing angular velocity for applications like car navigation and games
This document summarizes a master's project on developing accelerometer-based motion gestures for mobile devices using the Android platform. The project extends the WebKit browser interface of Android by creating features like shake to erase text, image rotation based on phone orientation, zooming in/out a web page by tilting the phone, and scrolling a web page by tilting in different directions. An open source sensor simulator is used to simulate accelerometer data as input to the Android emulator. The features are implemented using the Android SDK and by writing Java code. Various Android development tools like the emulator, DDMS, and Logcat are utilized for testing the applications.
This document summarizes the design, fabrication process, and experimental results of a capacitive pressure sensor made using printed circuit board microelectromechanical systems (PCBMEMS) technology. The sensor consists of two FR4 circuit boards with a small separation that varies with applied pressure, changing the capacitance. Photolithography is used to etch copper patterns on the boards. Experimental results show the sensor's output frequency varies linearly with increasing applied pressure up to 3,000 mbar. The low-cost PCBMEMS fabrication process could enable integration with electronics for pressure sensing in various industries.
This slide contains information about two type of accelerometer :- 1. Seismic Accelerometer 2 :- Displacement type accelerometer.
it contains working and construction.
This document discusses occupancy and vacancy sensors. It describes the different types of occupancy sensors including wall switch, ceiling mount, and wall mount. It also discusses the different sensor technologies used in occupancy sensors such as passive infrared, ultrasound, and dual technology sensors. Applications of occupancy sensors in areas like bedrooms, offices, and hotel rooms are provided.
The document discusses the accelerometer and gyroscope sensors found in smartphones and their uses. The accelerometer measures device orientation and gravity while the gyroscope detects rotation along three axes. Together, they provide precise six-axis motion sensing by combining the three axes of each. This detailed motion data is used for camera image stabilization, gaming input, navigation apps, and general user interface interaction.
This document discusses various types of pressure transducers, including mechanical and electrical types. Mechanical transducers use an elastic element like a bourdon tube, bellows, or diaphragm to convert pressure to displacement. Electrical transducers add an electric element to convert the mechanical displacement to an electrical signal. Common electric elements are piezoelectric materials, strain gauges, capacitors, and inductive coils. Piezoelectric transducers actively generate a voltage in response to pressure, while other electrical transducers like strain gauges are passive and require an external power source to modulate their electrical properties.
Gyroscope sensors measure angular velocity by detecting the Coriolis effect on a vibrating mass. They have specifications including measurement range, number of sensing axes, nonlinearity, temperature range, and noise parameters. MEMS gyroscopes typically use a vibrating proof mass driven electrostatically while rotation is detected via sense electrodes measuring the Coriolis-induced deflection perpendicular to the drive mode. The Coriolis effect causes an apparent deflection in a rotating reference frame due to inertial forces.
The document discusses gyroscopes, including what they are, their uses, types, and applications. A gyroscope is a device that uses angular momentum to detect orientation and maintain its axis of rotation. It consists of a spinning mass on an axle. Gyroscopes are used for ship compasses, stability assistance in spacecraft and bikes, and inertial guidance systems. Practical applications include improving helicopter stability. Types include rotary, fiber optic, and MEMS gyroscopes. Gyroscope applications include consumer electronics like the Wii remote, smart phones for gaming input and screen orientation, and laptops for free fall detection. Gyroscopes are also used in measuring athletic movement and sensing angular velocity for applications like car navigation and games
This document summarizes a master's project on developing accelerometer-based motion gestures for mobile devices using the Android platform. The project extends the WebKit browser interface of Android by creating features like shake to erase text, image rotation based on phone orientation, zooming in/out a web page by tilting the phone, and scrolling a web page by tilting in different directions. An open source sensor simulator is used to simulate accelerometer data as input to the Android emulator. The features are implemented using the Android SDK and by writing Java code. Various Android development tools like the emulator, DDMS, and Logcat are utilized for testing the applications.
This document summarizes the design, fabrication process, and experimental results of a capacitive pressure sensor made using printed circuit board microelectromechanical systems (PCBMEMS) technology. The sensor consists of two FR4 circuit boards with a small separation that varies with applied pressure, changing the capacitance. Photolithography is used to etch copper patterns on the boards. Experimental results show the sensor's output frequency varies linearly with increasing applied pressure up to 3,000 mbar. The low-cost PCBMEMS fabrication process could enable integration with electronics for pressure sensing in various industries.
This slide contains information about two type of accelerometer :- 1. Seismic Accelerometer 2 :- Displacement type accelerometer.
it contains working and construction.
A capacitive sensor uses changes in capacitance to detect proximity or contact with a target. The sensor has a sensing area that produces an electric field, and a change in the gap between this area and a target alters the capacitance in a way that can be measured. Capacitive sensors are used for applications like touchscreens, thickness measurement, and position sensing due to their non-contact operation and insensitivity to the target material. They provide flexibility and cost advantages over mechanical switches in human-machine interfaces.
1. The document discusses various methods for measuring linear and angular velocity, including electromagnetic, seismic, and digital transducers as well as using the Doppler effect.
2. Electromagnetic transducers are the most commonly used for linear velocity and work by inducing a voltage in a coil from the motion of a magnet. Moving magnet and moving coil types are described.
3. Angular velocity can be measured with a tachometer, which can be mechanical and count revolutions or electrical and generate a voltage proportional to speed.
The document discusses different types of sensors and transducers used to measure important process parameters such as flow, temperature, pressure, and level. It describes transducers as devices that convert one form of energy into another. It then provides details on various sensors used to measure temperature, including thermocouples, thermistors, RTDs, and pyrometers. It also discusses common pressure measurement techniques like manometric and elastic pressure transducers using devices like Bourdon tubes, bellows, and diaphragms.
Unit-6: Gyroscope, of Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
This presentation discusses pressure measurement and pressure transducers. It begins by defining pressure units and types. It then describes various mechanical pressure transducer technologies including Bourdon tubes, diaphragms, and manometers. It also covers various electrical pressure transducer technologies such as strain gauges, vibrating wire, piezoelectric, capacitance, and optical. The presentation concludes with discussions on installing pressure transducers, how the transducer impacts the overall control loop, and selecting the appropriate transducer type.
Proximity sensors detect objects without physical contact using various technologies like inductive, capacitive, ultrasonic and optical. Inductive sensors detect metallic objects using a coil and oscillator to create a magnetic field. Capacitive sensors detect metallic and nonmetallic objects by measuring capacitance changes between the sensor and object. Ultrasonic sensors use sound waves above human hearing range, while optical sensors use light beams reflected off objects. Key features of good sensors include precision, accuracy, response speed, operating range, reliability, easy calibration and low cost.
This document discusses motion sensing technology. It begins by defining a sensor and describing motion sensors, which detect movement. The main types of motion sensors are active sensors, which emit and detect signals, and passive sensors, which detect infrared radiation. Motion sensing has applications in security, lighting, and games. The document explores specific motion sensing technologies like infrared, ultrasonic, and microwave sensors. It also discusses the use of motion sensors in mobile devices and games like the Kinect. In conclusion, the document states that while important for gaming now, motion sensing will have more impact in non-gaming applications.
Better motion control using accelerometer/gyroscope sensor fusionGabor Paller
This document discusses using accelerometer and gyroscope sensor fusion to improve motion control. It begins by reviewing a previous presentation on using only an accelerometer for motion recognition. It then describes how each sensor - accelerometer, gyroscope, and compass - measures motion differently, with strengths and weaknesses. The main idea is to use a gyroscope to compensate for the gravity component detected by the accelerometer, allowing separation of gravity from motion acceleration. This allows more accurate motion recognition compared to using just acceleration. Implementation examples and conclusions are provided on potential applications and approaches to sensor fusion.
Covering points of interest with mobile sensorsEcway2004
Ecway Technologies provides IEEE projects and software developments from its offices located in multiple cities across Tamil Nadu, India. The company's website and contact information is provided.
The document discusses an algorithm for optimizing the autonomous deployment of mobile sensors to cover predefined Points of Interest while maintaining connectivity between the sensors and a base station. Each sensor moves toward a Point of Interest but also maintains connectivity with a subset of neighboring sensors that are part of a Relative Neighborhood Graph, which is reduced to provide global connectivity locally. The deployment scheme aims to minimize connectivity sensors and maximize monitoring sensors. Analytical results, simulations, and a practical implementation demonstrate the efficiency of the algorithm.
Coloring based inter-wban scheduling for mobile wireless body area networksEcway2004
This document describes a study on inter-WBAN scheduling for mobile wireless body area networks. The study proposes a random incomplete coloring algorithm with low time complexity and high spatial reuse to overcome interference between wireless body area networks. Simulation results show that the proposed coloring algorithm effectively overcomes inter-WBAN interference and supports higher system throughput in various mobile WBAN scenarios compared to conventional coloring methods.
Code modulation based encryption & decryption technique for secure communicat...Ecway2004
This document describes a code modulation based encryption and decryption technique for secure wireless communication. The system has a transmitter section and receiver section, each designed around a microcontroller. At the transmitter, data typed into a PC is encrypted using the microcontroller and transmitted via RF. At the receiver, the encrypted data is received, decoded by the microcontroller, and displayed on the PC. To view the actual data, a password must be entered which decrypts the cipher text into plaintext. The block diagram shows the transmitter components include an encoder, microcontroller, MAX232, and RF transmitter. The receiver components include a decoder, microcontroller, MAX232, and RF receiver.
Clustering sentence level text using a novel fuzzy relational clustering algo...Ecway2004
Ecway Technologies is a software development company with offices in multiple cities in Tamil Nadu, India. They can be contacted via phone or email.
The paper presents a novel fuzzy clustering algorithm that operates on relational input data in the form of a pairwise similarity matrix between objects. The algorithm uses a graph representation and models centrality as likelihood in an Expectation-Maximization framework. Results show the algorithm can identify overlapping clusters of semantically related sentences, demonstrating potential use in text mining tasks. It was also applied successfully to benchmark datasets in other domains.
This document summarizes a study on clustering probabilistic graphs. It proposes extending the edit-distance-based definition of graph clustering to probabilistic graphs. Practical approximation algorithms are developed based on establishing a connection between the objective function and correlation clustering. The parameter-free objective function means the number of clusters is part of the output. Methods are developed for testing statistical significance of clusters and handling noisy clusterings. Experiments on real protein-protein interaction and large-scale social networks demonstrate the techniques can discover correct numbers of clusters and identify known relationships.
Cloudsim t-drive enhancing driving directions with taxi drivers’ intelligenceEcway2004
This paper presents a smart driving direction system that leverages taxi drivers' intelligence and experience. GPS-equipped taxis act as mobile sensors to model the dynamic traffic patterns of a city. A time-dependent landmark graph models traffic patterns and experienced drivers' route choices to provide users with the practically fastest route to a destination at a given departure time. A clustering approach estimates travel times between landmarks in different time slots. A two-stage routing algorithm then computes a customized, practically fastest route for the user based on this graph and real-world trajectory data from over 33,000 taxis over three months. Evaluation found that 60-70% of routes suggested were faster than alternatives, with 20% sharing results, and on average routes
Cloudsim ranking on data manifold with sink pointsEcway2004
ECWAY Technologies provides IEEE projects and software development services from its offices in multiple cities across India. The document discusses a novel ranking approach called Manifold Ranking with Sink Points (MRSP) that addresses diversity, relevance, and importance in ranking. MRSP uses manifold ranking over a data manifold to find the most relevant objects while turning already ranked objects into "sink points" to prevent redundant objects from receiving a high rank. Experimental results on update summarization and query recommendation tasks show MRSP performs strongly compared to existing ranking approaches by better addressing the importance of diversity in ranking.
Cloudsim quality-differentiated video multicast in multirate wireless networksEcway2004
This document describes a quality-differentiated video multicast scheme for multirate wireless networks called QDM. QDM aims to provide heterogeneous clients with differentiated video qualities matching their channel conditions. It first proposes a rate scheduling model to select the optimal transmission bitrate for each video frame to maximize total visual quality subject to minimum quality guarantees. It then presents QDM, a practical protocol that constructs a cluster-based structure to characterize heterogeneity and adapts transmission rates based on video quality perceived by cluster heads. Simulation results show QDM can efficiently adapt to network dynamics and variable bitrates, producing a 2-5 dB gain in average video quality over leader-based approaches.
Cloudsim power allocation for statistical qo s provisioning in opportunistic...Ecway2004
The document proposes a power allocation scheme for statistical quality-of-service provisioning in multi-relay cognitive networks. The scheme first chooses between direct transmission or relay transmission based on channel state information. It then performs efficient power allocation according to the transmission mode and given constraints like quality-of-service requirements, average transmit power limits, and peak interference limits. Simulations show the proposed scheme outperforms max-min criterion and equal power allocation policies by achieving higher throughput while involving at most two relays for transmission.
Cloudsim distributed web systems performance forecasting using turning bands...Ecway2004
The document discusses using the Turning Bands method to forecast the performance of distributed web systems. Real-life data was obtained from an experiment monitoring a group of web servers worldwide using an agent system called MWING located in different parts of Poland. The results showed good quality in predicting web performance when European web servers were monitored from an agent in Gliwice, Poland using the Turning Bands method.
Cloudsim distributed processing of probabilistic top-k queries in wireless s...Ecway2004
This document summarizes a paper on distributed processing of probabilistic top-k queries in wireless sensor networks. It introduces the concepts of sufficient and necessary sets, which can facilitate localized data pruning in clusters. It then describes three algorithms - sufficient set-based, necessary set-based, and boundary-based - for intercluster query processing with bounded communication rounds. Finally, it presents an adaptive algorithm that dynamically switches between the three algorithms to minimize transmission cost, and experimental results showing the algorithms significantly reduce data transmission with small constant communication rounds, with the adaptive algorithm performing near-optimally under various conditions.
This document contains 15 titles for civil engineering projects related to structural analysis. The titles cover topics like analyzing beams, trusses, bridges, dams, and other structures under different loads and conditions using methods like finite element analysis. The analyses will determine factors like deflection, stresses, stability, and performance of the various civil structures.
A capacitive sensor uses changes in capacitance to detect proximity or contact with a target. The sensor has a sensing area that produces an electric field, and a change in the gap between this area and a target alters the capacitance in a way that can be measured. Capacitive sensors are used for applications like touchscreens, thickness measurement, and position sensing due to their non-contact operation and insensitivity to the target material. They provide flexibility and cost advantages over mechanical switches in human-machine interfaces.
1. The document discusses various methods for measuring linear and angular velocity, including electromagnetic, seismic, and digital transducers as well as using the Doppler effect.
2. Electromagnetic transducers are the most commonly used for linear velocity and work by inducing a voltage in a coil from the motion of a magnet. Moving magnet and moving coil types are described.
3. Angular velocity can be measured with a tachometer, which can be mechanical and count revolutions or electrical and generate a voltage proportional to speed.
The document discusses different types of sensors and transducers used to measure important process parameters such as flow, temperature, pressure, and level. It describes transducers as devices that convert one form of energy into another. It then provides details on various sensors used to measure temperature, including thermocouples, thermistors, RTDs, and pyrometers. It also discusses common pressure measurement techniques like manometric and elastic pressure transducers using devices like Bourdon tubes, bellows, and diaphragms.
Unit-6: Gyroscope, of Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
This presentation discusses pressure measurement and pressure transducers. It begins by defining pressure units and types. It then describes various mechanical pressure transducer technologies including Bourdon tubes, diaphragms, and manometers. It also covers various electrical pressure transducer technologies such as strain gauges, vibrating wire, piezoelectric, capacitance, and optical. The presentation concludes with discussions on installing pressure transducers, how the transducer impacts the overall control loop, and selecting the appropriate transducer type.
Proximity sensors detect objects without physical contact using various technologies like inductive, capacitive, ultrasonic and optical. Inductive sensors detect metallic objects using a coil and oscillator to create a magnetic field. Capacitive sensors detect metallic and nonmetallic objects by measuring capacitance changes between the sensor and object. Ultrasonic sensors use sound waves above human hearing range, while optical sensors use light beams reflected off objects. Key features of good sensors include precision, accuracy, response speed, operating range, reliability, easy calibration and low cost.
This document discusses motion sensing technology. It begins by defining a sensor and describing motion sensors, which detect movement. The main types of motion sensors are active sensors, which emit and detect signals, and passive sensors, which detect infrared radiation. Motion sensing has applications in security, lighting, and games. The document explores specific motion sensing technologies like infrared, ultrasonic, and microwave sensors. It also discusses the use of motion sensors in mobile devices and games like the Kinect. In conclusion, the document states that while important for gaming now, motion sensing will have more impact in non-gaming applications.
Better motion control using accelerometer/gyroscope sensor fusionGabor Paller
This document discusses using accelerometer and gyroscope sensor fusion to improve motion control. It begins by reviewing a previous presentation on using only an accelerometer for motion recognition. It then describes how each sensor - accelerometer, gyroscope, and compass - measures motion differently, with strengths and weaknesses. The main idea is to use a gyroscope to compensate for the gravity component detected by the accelerometer, allowing separation of gravity from motion acceleration. This allows more accurate motion recognition compared to using just acceleration. Implementation examples and conclusions are provided on potential applications and approaches to sensor fusion.
Covering points of interest with mobile sensorsEcway2004
Ecway Technologies provides IEEE projects and software developments from its offices located in multiple cities across Tamil Nadu, India. The company's website and contact information is provided.
The document discusses an algorithm for optimizing the autonomous deployment of mobile sensors to cover predefined Points of Interest while maintaining connectivity between the sensors and a base station. Each sensor moves toward a Point of Interest but also maintains connectivity with a subset of neighboring sensors that are part of a Relative Neighborhood Graph, which is reduced to provide global connectivity locally. The deployment scheme aims to minimize connectivity sensors and maximize monitoring sensors. Analytical results, simulations, and a practical implementation demonstrate the efficiency of the algorithm.
Coloring based inter-wban scheduling for mobile wireless body area networksEcway2004
This document describes a study on inter-WBAN scheduling for mobile wireless body area networks. The study proposes a random incomplete coloring algorithm with low time complexity and high spatial reuse to overcome interference between wireless body area networks. Simulation results show that the proposed coloring algorithm effectively overcomes inter-WBAN interference and supports higher system throughput in various mobile WBAN scenarios compared to conventional coloring methods.
Code modulation based encryption & decryption technique for secure communicat...Ecway2004
This document describes a code modulation based encryption and decryption technique for secure wireless communication. The system has a transmitter section and receiver section, each designed around a microcontroller. At the transmitter, data typed into a PC is encrypted using the microcontroller and transmitted via RF. At the receiver, the encrypted data is received, decoded by the microcontroller, and displayed on the PC. To view the actual data, a password must be entered which decrypts the cipher text into plaintext. The block diagram shows the transmitter components include an encoder, microcontroller, MAX232, and RF transmitter. The receiver components include a decoder, microcontroller, MAX232, and RF receiver.
Clustering sentence level text using a novel fuzzy relational clustering algo...Ecway2004
Ecway Technologies is a software development company with offices in multiple cities in Tamil Nadu, India. They can be contacted via phone or email.
The paper presents a novel fuzzy clustering algorithm that operates on relational input data in the form of a pairwise similarity matrix between objects. The algorithm uses a graph representation and models centrality as likelihood in an Expectation-Maximization framework. Results show the algorithm can identify overlapping clusters of semantically related sentences, demonstrating potential use in text mining tasks. It was also applied successfully to benchmark datasets in other domains.
This document summarizes a study on clustering probabilistic graphs. It proposes extending the edit-distance-based definition of graph clustering to probabilistic graphs. Practical approximation algorithms are developed based on establishing a connection between the objective function and correlation clustering. The parameter-free objective function means the number of clusters is part of the output. Methods are developed for testing statistical significance of clusters and handling noisy clusterings. Experiments on real protein-protein interaction and large-scale social networks demonstrate the techniques can discover correct numbers of clusters and identify known relationships.
Cloudsim t-drive enhancing driving directions with taxi drivers’ intelligenceEcway2004
This paper presents a smart driving direction system that leverages taxi drivers' intelligence and experience. GPS-equipped taxis act as mobile sensors to model the dynamic traffic patterns of a city. A time-dependent landmark graph models traffic patterns and experienced drivers' route choices to provide users with the practically fastest route to a destination at a given departure time. A clustering approach estimates travel times between landmarks in different time slots. A two-stage routing algorithm then computes a customized, practically fastest route for the user based on this graph and real-world trajectory data from over 33,000 taxis over three months. Evaluation found that 60-70% of routes suggested were faster than alternatives, with 20% sharing results, and on average routes
Cloudsim ranking on data manifold with sink pointsEcway2004
ECWAY Technologies provides IEEE projects and software development services from its offices in multiple cities across India. The document discusses a novel ranking approach called Manifold Ranking with Sink Points (MRSP) that addresses diversity, relevance, and importance in ranking. MRSP uses manifold ranking over a data manifold to find the most relevant objects while turning already ranked objects into "sink points" to prevent redundant objects from receiving a high rank. Experimental results on update summarization and query recommendation tasks show MRSP performs strongly compared to existing ranking approaches by better addressing the importance of diversity in ranking.
Cloudsim quality-differentiated video multicast in multirate wireless networksEcway2004
This document describes a quality-differentiated video multicast scheme for multirate wireless networks called QDM. QDM aims to provide heterogeneous clients with differentiated video qualities matching their channel conditions. It first proposes a rate scheduling model to select the optimal transmission bitrate for each video frame to maximize total visual quality subject to minimum quality guarantees. It then presents QDM, a practical protocol that constructs a cluster-based structure to characterize heterogeneity and adapts transmission rates based on video quality perceived by cluster heads. Simulation results show QDM can efficiently adapt to network dynamics and variable bitrates, producing a 2-5 dB gain in average video quality over leader-based approaches.
Cloudsim power allocation for statistical qo s provisioning in opportunistic...Ecway2004
The document proposes a power allocation scheme for statistical quality-of-service provisioning in multi-relay cognitive networks. The scheme first chooses between direct transmission or relay transmission based on channel state information. It then performs efficient power allocation according to the transmission mode and given constraints like quality-of-service requirements, average transmit power limits, and peak interference limits. Simulations show the proposed scheme outperforms max-min criterion and equal power allocation policies by achieving higher throughput while involving at most two relays for transmission.
Cloudsim distributed web systems performance forecasting using turning bands...Ecway2004
The document discusses using the Turning Bands method to forecast the performance of distributed web systems. Real-life data was obtained from an experiment monitoring a group of web servers worldwide using an agent system called MWING located in different parts of Poland. The results showed good quality in predicting web performance when European web servers were monitored from an agent in Gliwice, Poland using the Turning Bands method.
Cloudsim distributed processing of probabilistic top-k queries in wireless s...Ecway2004
This document summarizes a paper on distributed processing of probabilistic top-k queries in wireless sensor networks. It introduces the concepts of sufficient and necessary sets, which can facilitate localized data pruning in clusters. It then describes three algorithms - sufficient set-based, necessary set-based, and boundary-based - for intercluster query processing with bounded communication rounds. Finally, it presents an adaptive algorithm that dynamically switches between the three algorithms to minimize transmission cost, and experimental results showing the algorithms significantly reduce data transmission with small constant communication rounds, with the adaptive algorithm performing near-optimally under various conditions.
This document contains 15 titles for civil engineering projects related to structural analysis. The titles cover topics like analyzing beams, trusses, bridges, dams, and other structures under different loads and conditions using methods like finite element analysis. The analyses will determine factors like deflection, stresses, stability, and performance of the various civil structures.
This document discusses using a chopper circuit to control the speed of a DC motor. A chopper circuit allows controlling the voltage to the motor by rapidly switching the voltage on and off, which enables remote speed control. This method improves motor efficiency by reducing current, lowers temperatures, shrinks motor size, and increases lifetime compared to previous variable resistor and transformer-based speed control methods. The project will use buttons to vary the firing angle of a MOSFET in the chopper circuit to control motor speed, with lower firing angles providing higher speeds.
Channel assignment for throughput optimization in multichannel multiradio wir...Ecway2004
ECWAY Technologies provides IEEE projects and software developments with offices in multiple cities in Tamil Nadu, India. They can be contacted via phone or email.
The document discusses a channel assignment algorithm for throughput optimization in multi-radio wireless mesh networks using network coding. It formulates the joint problem of random network coding, channel assignment, and broadcast link scheduling while taking into account opportunistic overhearing, interference constraints, coding constraints, number of channels, radios per node, and fairness between unicast connections. An auction-based suboptimal solution is developed for overall network throughput optimization. Performance evaluation shows the algorithm can effectively use multiple radios and channels while addressing fairness issues from the auction, with promising gains over traditional routing
Channel allocation and routing in hybrid multichannel multiradio wireless mes...Ecway2004
The document proposes a hybrid channel allocation and routing approach for multichannel multiradio wireless mesh networks. It presents an Adaptive Dynamic Channel Allocation (ADCA) protocol that considers both throughput and delay for channel assignment. It also proposes an Interference and Congestion Aware Routing (ICAR) protocol for hybrid networks with static and dynamic links that balances channel usage. Simulation results show ADCA reduces packet delay without degrading throughput, and the hybrid approach adapts better to changing traffic than static-only networks with lower overhead and delay than existing hybrid methods.
Ecway Technologies provides software development and IEEE projects services from offices located in multiple cities across India. They can be contacted via phone or email on their website at www.ecwayprojects.com.
The paper presents a method for easy stereoscopic photo authoring using a regular monocular camera. It takes two input images or video frames and transforms them into a stereoscopic image pair for pleasant 3D viewing. This is done through a perceptual-plausible image rectification algorithm that warps the input pairs to meet stereoscopic geometric constraints while avoiding visual distortion. The warping uses spatially-varying mesh-based warps that encode various constraints to best meet the stereoscopic geometry and minimize distortion. Experiments show the
Ecway Technologies provides IEEE projects, software developments, and casual stereoscopic photo authoring. It has offices in multiple cities across India. Ecway's casual stereoscopic photo authoring method takes two images or video frames from a regular monocular camera as input and transforms them into a stereoscopic image pair for 3D viewing. The method uses a perceptual-plausible image rectification algorithm that warps the input pairs to meet stereoscopic geometric constraints while avoiding visual distortion. It formulates the warping problem as a quadratic energy minimization solved using a sparse linear solver. The method also allows local and global disparity adjustments for adapting stereoscopic images to different viewing conditions. Experiments show Ecway's spatially-varying war
Capacity of hybrid wireless mesh networks with random a psEcway2004
This paper proposes a hybrid wireless mesh network (WMN) architecture that allows the backbone to utilize random connections to access points (APs) in a wireless local area network (WLAN). Theoretical analysis shows that the capacity of a three-tier hybrid WMN is affected by the number of mesh router cells connected to APs, the ratio of access link bandwidth to backbone link bandwidth, and traffic balance among routers with AP access. Simulation results demonstrate that configuring APs and balancing traffic can significantly improve network capacity in the proposed hybrid architecture by taking advantage of wired connections through APs.
Bomb detection robot with wireless cameraEcway2004
This prototype robot is designed to help bomb squads by remotely detecting bombs and obstacles. It uses sensors to detect metals and obstacles as it moves through an area, sending that information back to operators via a wireless camera and computer. The robot is navigated and directed remotely using the camera while its metal detection, obstacle detection, and location data are sent to a base station for operators to monitor on LED displays and sounds.
Bed side patients monitoring system with emergency alertEcway2004
The document describes a bedside patient monitoring system that measures temperature data using a portable medical monitoring unit. The unit contains a microcontroller, sensor board, and processing system to manage information, analyze data in real-time, and provide warnings for emergencies or abnormal diagnoses. The system takes a patient's temperature, converts it to digital using an ADC, and sends it to the microcontroller for processing. If the temperature exceeds a threshold, the system sounds a buzzer for notification.
Bed side patients monitoring system with emergency alert
Capacitive seat sensors for multiple occupancy detection using a low cost setup
1. CAPACITIVE SEAT SENSORS FOR MULTIPLE
OCCUPANCY DETECTION USING A LOW-COST SETUP
ABSTRACT:
The Minibus public transportation sector and road safety remains a significant
challenge in Africa. We propose a low cost system to monitor the taxi industry and encourage
safe driving. A low cost capacitive proximity sensor for seat occupancy detection based on
the loading mode capacitive sensing technique is designed. The capacitive sensor uses a
single electrode to detect an occupant. We use ZigBee modules for a dynamic wireless
system integration where sensors can be added or removed without modifications. A
mathematical model of the capacitive sensor is developed and we determine the capacitance
on the sensor's electrode. The occupied capacitance is double the unoccupied capacitance.
Our results show that the proposed capacitive sensor can distinguish clearly between an
unoccupied and occupied seat.