Data Acquisition Systems presentation
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This presentation discusses data acquisition systems and LabVIEW. It introduces data acquisition, the components of a data acquisition system including sensors, signal conditioning equipment, data conversion and processing. It describes the basic block diagram of a data acquisition system and the components within it. It also discusses National Instruments data acquisition hardware options, driver and application software, and how to perform real-time data acquisition using LabVIEW. Examples of measurement applications and advantages/disadvantages of data acquisition systems are provided.
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Data Acquisition System
The document discusses data acquisition systems. It defines data acquisition as the process of sampling real-world signals and converting them to digital values. A data acquisition system consists of sensors, DAQ hardware, and software. The key components are sensors that measure physical variables, signal conditioning hardware, analog-to-digital converters, and software for processing and analysis. Data acquisition systems are used widely in industries for measurement and control applications.
Data acquisition system (DAS)
Introduction to DAS
Objectives of a DAS
Block diagram and explanation
Methodology
Hardware and software for DAS
Merits and Demerits of DAS/DQS
Conclusion
data-acquisition-system-ppt
Data acquisition involves sampling signals from physical processes, converting the analog signals to digital numeric values, and processing the data with a computer. Data acquisition systems typically use transducers to sense physical variables and convert them to electrical signals, condition the signals for analog to digital conversion, and convert the signals to digital formats for computer processing, analysis, storage and display. Signal conditioning improves signal quality and may include amplification, isolation, filtering and linearization. Analog to digital converters change analog voltage or current levels into digital values that computers can process.
Digital multimeters
A digital multimeter is a laboratory instrument that can measure AC/DC voltage, AC/DC current, and resistance. It displays measurements digitally for accuracy. A multimeter has a display, selection knob to choose the measurement type, and ports to connect probes that are used to measure circuit characteristics. It runs on a 9V battery and contains a fuse for overcurrent protection. The circuit board hosts components like resistors and integrated circuits to perform measurements shown on the LCD display.
Data acquisition system
One of my friend has given a best information regarding DAS (data acquisition system) through this slides/ presentation.
This contains the information about various components of DAS.
Enjoy it,like it.
Capacitive transducers
The definition of the capacitive transducer is to measure the displacement (how much distance it covers), pressure and other several physical quantities, these transducers are preferred. In these transducers, the capacitance between the plates is varied because of the distance between the plates, overlapping of plates, due to dielectric medium change, etc.
Instrumentation & Measurement: Noise and Its Types
Noise refers to any undesired electrical signal present in addition to the intended signal. There are two main types of noise: man-made noise from sources like machines and natural noise from components and the atmosphere. White noise contains thermal and shot noise, while pink noise contains flicker and burst noise. The thermal noise RMS voltage and shot noise RMS current can be calculated using formulas involving temperature, resistance, bandwidth, and other factors. Signal to noise ratio and noise figure are key metrics used to represent noise in signals and systems.
Data Acquisition System and Data loggers
Data acquisition systems capture and measure physical phenomena like temperature, pressure, and light and convert them into electrical signals that can be processed by a computer. The key components are transducers that convert physical values into electrical signals, signal conditioning hardware to prepare signals for measurement, and data acquisition hardware and software for measuring and analyzing the data. Data loggers are portable electronic devices that record data over time from internal or external sensors and instruments to internal memory for later retrieval. They are used in various applications like environmental monitoring and machinery performance testing.
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Data Acquisition System
The document discusses data acquisition systems. It defines data acquisition as the process of sampling real-world signals and converting them to digital values. A data acquisition system consists of sensors, DAQ hardware, and software. The key components are sensors that measure physical variables, signal conditioning hardware, analog-to-digital converters, and software for processing and analysis. Data acquisition systems are used widely in industries for measurement and control applications.
Data acquisition system (DAS)
Introduction to DAS
Objectives of a DAS
Block diagram and explanation
Methodology
Hardware and software for DAS
Merits and Demerits of DAS/DQS
Conclusion
data-acquisition-system-ppt
Data acquisition involves sampling signals from physical processes, converting the analog signals to digital numeric values, and processing the data with a computer. Data acquisition systems typically use transducers to sense physical variables and convert them to electrical signals, condition the signals for analog to digital conversion, and convert the signals to digital formats for computer processing, analysis, storage and display. Signal conditioning improves signal quality and may include amplification, isolation, filtering and linearization. Analog to digital converters change analog voltage or current levels into digital values that computers can process.
Digital multimeters
A digital multimeter is a laboratory instrument that can measure AC/DC voltage, AC/DC current, and resistance. It displays measurements digitally for accuracy. A multimeter has a display, selection knob to choose the measurement type, and ports to connect probes that are used to measure circuit characteristics. It runs on a 9V battery and contains a fuse for overcurrent protection. The circuit board hosts components like resistors and integrated circuits to perform measurements shown on the LCD display.
Data acquisition system
One of my friend has given a best information regarding DAS (data acquisition system) through this slides/ presentation.
This contains the information about various components of DAS.
Enjoy it,like it.
Capacitive transducers
The definition of the capacitive transducer is to measure the displacement (how much distance it covers), pressure and other several physical quantities, these transducers are preferred. In these transducers, the capacitance between the plates is varied because of the distance between the plates, overlapping of plates, due to dielectric medium change, etc.
Instrumentation & Measurement: Noise and Its Types
Noise refers to any undesired electrical signal present in addition to the intended signal. There are two main types of noise: man-made noise from sources like machines and natural noise from components and the atmosphere. White noise contains thermal and shot noise, while pink noise contains flicker and burst noise. The thermal noise RMS voltage and shot noise RMS current can be calculated using formulas involving temperature, resistance, bandwidth, and other factors. Signal to noise ratio and noise figure are key metrics used to represent noise in signals and systems.
Data Acquisition System and Data loggers
Data acquisition systems capture and measure physical phenomena like temperature, pressure, and light and convert them into electrical signals that can be processed by a computer. The key components are transducers that convert physical values into electrical signals, signal conditioning hardware to prepare signals for measurement, and data acquisition hardware and software for measuring and analyzing the data. Data loggers are portable electronic devices that record data over time from internal or external sensors and instruments to internal memory for later retrieval. They are used in various applications like environmental monitoring and machinery performance testing.
Data acquisition system
This document discusses data acquisition (DAQ) systems. It begins with an introduction to DAQ and defines it as the process of measuring physical phenomena like voltage, current, temperature etc. and converting it to digital form. It then presents a block diagram of typical DAQ components like transducers, signal conditioning, A/D conversion, telemetry etc. and discusses each component in detail. It explains the working of DAQ systems from data collection through sensors to digital conversion and software processing. Finally, it outlines the advantages and applications of DAQ systems in various industries like aerospace, medicine, manufacturing etc.
Characteristics and selection of Sensors
These slides give a brief explanation about the required characters of a sensor and criteria to choose one.
Telemetry
Telemetry involves measuring values at a remote location and transmitting the data to another location. It involves three steps - measuring a value, converting it to a signal, transmitting the signal, and reconverting it back to the original data. Factors like accuracy, whether the data is analog or digital, error detection/correction, and bandwidth influence telemetry system design. There are two main types - landline systems which use wires/cables over short distances, and radio frequency systems which use radio links from 1km to beyond 50km. Landline systems transmit current or voltage and have simple circuitry but limited range. Radio frequency systems transmit via radio links and are used for long range applications like spacecraft. Modulation schemes include amplitude modulation for
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The document discusses different types of analog to digital converters (ADCs). It describes 6 main types - counter/ramp ADC, tracking ADC, successive approximation ADC, flash ADC, delta-sigma ADC, and dual slope integrating ADC. For each type it provides a brief overview of the operating principle and block diagram. It also discusses important ADC specifications and parameters such as resolution, quantization error, dynamic range, signal to noise ratio, aperture delay etc.
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Digital transducer
In this slide there is all about the digital transducer and its types.Its is very helpful in making short notes of transducer. There is a simple description.
Lectute instrumentation and process control data acquisition
Data acquisition involves transforming physical phenomena into electrical signals that are measured and converted into digital format. A data acquisition system includes sensors, signal conditioning hardware, acquisition hardware, and a computer. Sensors convert physical values into electrical signals, which are conditioned and acquired before being sent to a computer for processing and storage. Common computer interfaces for data acquisition boards include serial and parallel ports, as well as PCI and EISA buses.
Resistive transducers and Strain Gauge
The transducer whose resistance varies because of the environmental effects such type of transducer is known as the resistive transducer. The change in resistance is measured by the ac or dc measuring devices. The resistive transducer is used for measuring the physical quantities like temperature, displacement, vibration etc.
The measurement of the physical quantity is quite difficult. The resistive transducer converts the physical quantities into variable resistance which is easily measured by the meters. The process of variation in resistance is widely used in the industrial applications.
The resistive transducer can work both as the primary as well as the secondary transducer. The primary transducer changes the physical quantities into a mechanical signal, and secondary transducer directly transforms it into an electrical signal.
Working Principle of Resistive Transducer
The resistive transducer element works on the principle that the resistance of the element is directly proportional to the length of the conductor and inversely proportional to the area of the conductor. equation-1
Where R – resistance in ohms.
A – cross-section area of the conductor in meter square.
L – Length of the conductor in meter square.
ρ – the resistivity of the conductor in materials in ohm meter.
The resistive transducer is designed by considering the variation of the length, area and resistivity of the metal.
Applications of Resistive Transducer
The following are the applications of the resistive transducer.
Potentiometer – The translation and rotatory potentiometer are the examples of the resistive transducers. The resistance of their conductor varies with the variation in their lengths which is used for the measurement of displacement.
Strain gauges – The resistance of their semiconductor material changes when the strain occurs on it. This property of metals is used for the measurement of the pressure, force-displacement etc.
Resistance Thermometer – The resistance of the metals changes because of changes in temperature. This property of conductor is used for measuring the temperature.
Thermistor – It works on the principle that the temperature coefficient of the thermistor material varies with the temperature. The thermistor has the negative temperature coefficient. The Negative temperature coefficient means the temperature is inversely proportional to resistance.
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A PLL or phase-locked loop is a control system that generates an output signal whose phase is related to the phase of an input signal. It consists of three basic elements: a phase detector that compares the phase of two signals and generates an error signal, a loop filter that filters the error signal, and a voltage-controlled oscillator whose frequency is controlled by the filtered error signal. PLLs are commonly used in applications such as frequency synthesis, signal demodulation, and motor speed control.
Physiological transducers
This document discusses various types of physiological transducers. It begins by distinguishing between active transducers, which generate their own output signals, and passive transducers, which require an external power source. Passive transducers are then classified based on the transduction principle used, including resistive, capacitive, and inductive elements. The document also covers transducers used for biomedical applications, such as force, displacement, velocity, and pressure transducers. It provides examples of common transducers like strain gauges, thermistors, and linear variable differential transformers.
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- Measurement instruments have components for deflection, control, and damping of the pointer. Deflection indicates the measured quantity, control opposes deflection, and damping reduces oscillations.
- Instruments can be classified as analog or digital, absolute or secondary. Accuracy depends on design, materials, and errors like systematic, random, and environmental errors.
- Measurements involve comparing an unknown quantity to a standard and expressing the result numerically. Direct comparison is used when possible, otherwise indirect methods are used. Proper standards and methods are required for meaningful results.
Introduction to Sensor
This document provides an introduction to sensors, including definitions of key terms like sensors, transducers, and actuators. It describes different types of sensors such as temperature sensors, accelerometers, light sensors, and ultrasonic sensors. It explains various sensor principles including how sensors can be classified as active or passive, contact or non-contact, and absolute or relative. The document also discusses choosing sensors and interfacing sensors with electronics.
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Strain gauge load cells work by measuring the strain on an object using electrical resistance strain gauges. When force is applied, the strain gauges experience a change in resistance which is measured by a Wheatstone bridge circuit to produce an electrical output signal proportional to the applied load. The most common type of load cell uses a full Wheatstone bridge configuration with four strain gauges to maximize sensitivity. Proper design considers uniform strain distribution and protection of the gauges. Sources of error include loading errors and environmental effects, which can be compensated for in the design and signal conditioning.
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This document discusses data acquisition (DAQ) systems. It begins with an introduction to DAQ and defines it as the process of measuring physical phenomena like voltage, current, temperature etc. and converting it to digital form. It then presents a block diagram of typical DAQ components like transducers, signal conditioning, A/D conversion, telemetry etc. and discusses each component in detail. It explains the working of DAQ systems from data collection through sensors to digital conversion and software processing. Finally, it outlines the advantages and applications of DAQ systems in various industries like aerospace, medicine, manufacturing etc.
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These slides give a brief explanation about the required characters of a sensor and criteria to choose one.
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Telemetry involves measuring values at a remote location and transmitting the data to another location. It involves three steps - measuring a value, converting it to a signal, transmitting the signal, and reconverting it back to the original data. Factors like accuracy, whether the data is analog or digital, error detection/correction, and bandwidth influence telemetry system design. There are two main types - landline systems which use wires/cables over short distances, and radio frequency systems which use radio links from 1km to beyond 50km. Landline systems transmit current or voltage and have simple circuitry but limited range. Radio frequency systems transmit via radio links and are used for long range applications like spacecraft. Modulation schemes include amplitude modulation for
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Data acquisition involves transforming physical phenomena into electrical signals that are measured and converted into digital format. A data acquisition system includes sensors, signal conditioning hardware, acquisition hardware, and a computer. Sensors convert physical values into electrical signals, which are conditioned and acquired before being sent to a computer for processing and storage. Common computer interfaces for data acquisition boards include serial and parallel ports, as well as PCI and EISA buses.
Resistive transducers and Strain Gauge
The transducer whose resistance varies because of the environmental effects such type of transducer is known as the resistive transducer. The change in resistance is measured by the ac or dc measuring devices. The resistive transducer is used for measuring the physical quantities like temperature, displacement, vibration etc.
The measurement of the physical quantity is quite difficult. The resistive transducer converts the physical quantities into variable resistance which is easily measured by the meters. The process of variation in resistance is widely used in the industrial applications.
The resistive transducer can work both as the primary as well as the secondary transducer. The primary transducer changes the physical quantities into a mechanical signal, and secondary transducer directly transforms it into an electrical signal.
Working Principle of Resistive Transducer
The resistive transducer element works on the principle that the resistance of the element is directly proportional to the length of the conductor and inversely proportional to the area of the conductor. equation-1
Where R – resistance in ohms.
A – cross-section area of the conductor in meter square.
L – Length of the conductor in meter square.
ρ – the resistivity of the conductor in materials in ohm meter.
The resistive transducer is designed by considering the variation of the length, area and resistivity of the metal.
Applications of Resistive Transducer
The following are the applications of the resistive transducer.
Potentiometer – The translation and rotatory potentiometer are the examples of the resistive transducers. The resistance of their conductor varies with the variation in their lengths which is used for the measurement of displacement.
Strain gauges – The resistance of their semiconductor material changes when the strain occurs on it. This property of metals is used for the measurement of the pressure, force-displacement etc.
Resistance Thermometer – The resistance of the metals changes because of changes in temperature. This property of conductor is used for measuring the temperature.
Thermistor – It works on the principle that the temperature coefficient of the thermistor material varies with the temperature. The thermistor has the negative temperature coefficient. The Negative temperature coefficient means the temperature is inversely proportional to resistance.
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A PLL or phase-locked loop is a control system that generates an output signal whose phase is related to the phase of an input signal. It consists of three basic elements: a phase detector that compares the phase of two signals and generates an error signal, a loop filter that filters the error signal, and a voltage-controlled oscillator whose frequency is controlled by the filtered error signal. PLLs are commonly used in applications such as frequency synthesis, signal demodulation, and motor speed control.
Physiological transducers
This document discusses various types of physiological transducers. It begins by distinguishing between active transducers, which generate their own output signals, and passive transducers, which require an external power source. Passive transducers are then classified based on the transduction principle used, including resistive, capacitive, and inductive elements. The document also covers transducers used for biomedical applications, such as force, displacement, velocity, and pressure transducers. It provides examples of common transducers like strain gauges, thermistors, and linear variable differential transformers.
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This document discusses measurement techniques and instruments. It covers the basic components, classifications, functions, and errors of measurement instruments. The key points are:
- Measurement instruments have components for deflection, control, and damping of the pointer. Deflection indicates the measured quantity, control opposes deflection, and damping reduces oscillations.
- Instruments can be classified as analog or digital, absolute or secondary. Accuracy depends on design, materials, and errors like systematic, random, and environmental errors.
- Measurements involve comparing an unknown quantity to a standard and expressing the result numerically. Direct comparison is used when possible, otherwise indirect methods are used. Proper standards and methods are required for meaningful results.
Introduction to Sensor
This document provides an introduction to sensors, including definitions of key terms like sensors, transducers, and actuators. It describes different types of sensors such as temperature sensors, accelerometers, light sensors, and ultrasonic sensors. It explains various sensor principles including how sensors can be classified as active or passive, contact or non-contact, and absolute or relative. The document also discusses choosing sensors and interfacing sensors with electronics.
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This lecture introduces measurement and instrumentation. It defines measurement and instrumentation, discusses types of measurements and instruments. It reviews units of measurement, standards of measurement, and calibration. Measurement and instrumentation are used in various applications including home appliances, vehicles, and industrial processes to monitor and control parameters and improve operations.
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Strain gauge load cells work by measuring the strain on an object using electrical resistance strain gauges. When force is applied, the strain gauges experience a change in resistance which is measured by a Wheatstone bridge circuit to produce an electrical output signal proportional to the applied load. The most common type of load cell uses a full Wheatstone bridge configuration with four strain gauges to maximize sensitivity. Proper design considers uniform strain distribution and protection of the gauges. Sources of error include loading errors and environmental effects, which can be compensated for in the design and signal conditioning.
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The document discusses the differences between LEDs and laser diodes (ILDs) as optical sources for fiber optic communication systems. It outlines several parameters for comparing LEDs and ILDs, such as power, linearity, thermal considerations, response, and spectral width. ILDs are generally more powerful, have faster response, and narrower spectral width than LEDs. However, LEDs are easier to operate. The document then focuses on drive circuitry for modulating the optical sources, describing various circuit configurations for analog, digital, and high-speed transmission. Proper drive circuits are needed to maintain output power and compensate for non-linearities of the sources.
Digital voltmeter
A digital voltmeter (DVM) measures voltage through an analog-to-digital converter and digital display. It offers benefits over analog voltmeters like high accuracy from picovolts to megavolts. Common applications include electrical equipment monitoring. Portable DVMs combine voltage, current, and resistance measurement. Advanced systems connect to computers for automation and process control. The ICL7106 and ICL7107 are integrated circuit chips that provide the core functionality for building 31⁄2 digit DVMs, including an A/D converter, display drivers, and reference components. They are low power and support LCD or LED displays.
Introduction to smart sensors & its’ application
Smart sensors are sensors combined with interfacing electronic circuits that can perform logic functions, two-way communication, and make decisions. They convert physical, biological, or chemical inputs into digital outputs. Smart sensors have evolved from first generation devices with little electronics to now being fully integrated systems-on-chip with sensing, processing, communication and power management. They are used widely in industrial applications like structural health monitoring and geological mapping due to advantages like minimum interconnects, high reliability, and scalability.
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3) The final system allows remote monitoring and control of the industrial process from the HMI screens, including alarms and trends, to improve safety by giving engineers oversight.
CEAZA mega board: an open-source data logger for scientists
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LOW COST SCADA SYSTEM FOR EDUCATION
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Scada expert Clear Scada
Learn more about SCADA expert ClearSCADA:
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- Enhanced Security capability for better protection of the system
- Enhanced Operational Intelligence to help optimize operations and maintenance activities
- Integrated with the complete Schneider Electric Telemetry portfolio
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Data Acquisition Systems presentation
- 1. DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING BACHELOR OF TECHNOLOGY ELECTRICAL ENGINEERING 2ND PRESENTATION COURSE: EEE INSTRUMENTATION 5/20/2019 1
- 2. PRESENTED BY ADU-BUABENG DOMINIC REUBEN TSEY 5/20/2019 2
- 3. 5/20/2019 3 DATA ACQUISITION WITH LABVIEW 2015
- 4. PRESENTATION OUTLINE INTRODUCTION TO DAS/DAQ COMPONENTS OF DAS/DAQ BLOCK DAIGRAM OF DAS/DAQ COMPONENTS OF THE BLOCK DAIGRAM DAQ/DAS HARDWARE NATIONAL INSTRUMENTS DAQ HARDWARE OPTIONS DRIVER AND APPLICATION SOFTWARE REAL-TIME DATA ACQUISITION WITH LABVIEW MEASUREMENT APPLICATION ADVANTAGES/DISADVANTAGES OF DAS/DAQ 5/20/2019 4
- 5. INTRODUCTION TO DAS/DAQ Electronics instrumentation and measurement. It is used to collect data from the real world physical conditions and converting the resulting samples into digital numeric values. It is form of treating data. Data Acquisition system includes different tools and technology that are designed to accumulate data. 5/20/2019 5
- 6. COMPONENTS OF DAS/DAQ SENSORS SIGNAL CONDITIONING EQUIPMENT DATA CONVERTION DATA PROCESSING MULTIPLEXING DATA HANDLING ASSOCIATED TRANSMISSION, STORAGE AND DISPLAY DEVICE 5/20/2019 6
- 7. BLOCK DAIGRAM OF DAS/DAQ RECORDER DIGITAL DISPLAY MAGNETIC TAPE COMPUTER A/D C O N V E R T E R TRANSDUCER 1 TRANSDUCER 2 TRANSDUCER 3 TRANSDUCER 4 SIGNAL CONDITIONING 1 SIGNAL CONDITIONING 2 SIGNAL CONDITIONING 3 SIGNAL CONDITIONING 4 5/20/2019 7
- 8. COMPONENTS OF THE BLOCK DAIGRAM TRANSDUCER – It convert physical quantity to electrical quantity SIGNAL CONDITIONING UNIT – It is the stage of filtering, amplification and modification. MULTILEXING UNIT – It accept many signals and gives a single output. A/D CONVERTER UNIT – It convert analog data to digital data for easy processing and transmission 5/20/2019 8
- 9. COMPONENTS OF THE BLOCK DAIGRAM CONT’D DISPLAY AND RECORDER DEVICE – Data is displayed in suitable form in order to monitor the input signals. Eg – oscilloscope, numerical display etc. Recorder device – data can be stored either permanently or temporary. Eg – optical recorder, ultraviolent recorder etc. 5/20/2019 9
- 10. DAQ/DAS HARDWARE Data acquisition hardware acts as the interface between the computer and the outside world. 5/20/2019 10 It primarily functions as a device that DIGITIZES incoming ANALOG SIGNALS so that the computer can interpret them OTHER FUNCTIONALITIES Analog input/output Digital input/output Counter/timers Multifunction
- 11. NATIONAL INSTRUMENTS DAQ HARDWARE OPTIONS 5/20/2019 11
- 12. DAQ HARDWARE CONT’D 5/20/2019 12 NI USD – 6003 8 analog input, 10 KS/s; 16 bit resolution, low – cost multifunction DAQ for basic quality measurement
- 13. DRIVER AND APPLICATION SOFTWARE DRIVER SOFTWARE Software transforms the PC and the data acquisition hardware into a complete data acquisition, analysis, and presentation tool. Driver software is the layer of software for easily communicating with the hardware 5/20/2019 13
- 14. 5/20/2019 14 APPLICATION SOFTWARE Application software adds analysis and presentation capabilities to driver software NI offers three development environment software products for creating complete instrumentation, acquisition, and control applications LABVIEW with graphical programming methodology LABWINDOWS/CVI for traditional C programmers MEASUREMENT STUDIO for Visual Basic, C++, and .NET
- 15. 5/20/2019 15 DAQExpress NI has introduced a configuration-based software environment where programming is no longer a requirement. Using DAQExpress, you can make interactive measurements with NI Express technology. APPLICATION SOFTWARE CONT’D
- 16. 5/20/2019 16 REAL-TIME DATA ACQUISITION WITH LABVIEW
- 17. MEASUREMENT APPLICATION The DAQ ASSISTANT, included with NI-DAQmx, is a graphical, interactive guide for configuring, testing, and acquiring measurement data DAQ ASSISTANT is completely menu-driven Individuals makes fewer programming errors and drastically decrease the time from setting up your data acquisition system to taking your first measurement 5/20/2019 17
- 18. ADVANTAGES OF DAS/DAQ Improved data access to users through use of host and query languages Reduced updating errors and increased consistency Reduced data redundancy 5/20/2019 18
- 19. DISADVANTAGES OF DAS/DAQ Initial training required for all programmers and users Damage to database affects virtually all applications programs Database systems are complex, difficult, and time-consuming to design 5/20/2019 19