Passive Hybrid MEMS for High-Temperature Telemetric Measurements
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A hybrid MEMS sensor is described that uses inductive telemetry for contactless, high-temperature measurements in harsh environments. The passive sensor uses a bent beam structure connected to interdigitated combs to change capacitance with temperature. It communicates wirelessly with a readout unit through coupled inductors. Testing showed the sensor's capacitance and the measured temperatures agreed well with a reference sensor up to 350 degrees C, demonstrating its effectiveness for remote, high-temperature industrial monitoring.
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This document presents a simplified thermocouple interface with a linearization circuit. Thermocouples are widely used temperature sensors due to their ruggedness and broad temperature range. The paper describes different circuit designs for measuring temperature with a thermocouple, including pure analog, simplified digital, and designs for only hot or cold measurements. It also discusses linearization techniques to convert the non-linear thermocouple voltage output to temperature. Experimental results show the thermocouple output before and after applying a linearization algorithm, demonstrating improved accuracy.
Jj2516631667
This document presents a simplified thermocouple interface with a linearization circuit. Thermocouples are widely used temperature sensors due to their ruggedness and broad temperature range. The paper describes different circuit designs for measuring temperature with a thermocouple, including pure analog, simplified digital, and designs for only hot or cold measurements. It also discusses linearization techniques to convert the non-linear thermocouple voltage output to temperature. Experimental results show the thermocouple output before and after applying linearization, demonstrating improved accuracy.
Infrared thermography
nfrared Thermography and its principle, components, Imaging and Electrical Inspection for Maintenance of all the equipment related to them.
Soc nanobased integrated
Smart nanotechnology materials have been recently utilized in sensing applications. Carbon
nanotube (CNT) based SoC sensor systems have potential applications in various fields,
including medical, energy, consumer electronics, computers, and HVAC (heating, ventilation,
and air conditioning) among others. In this study, a nanotechnology multisensory system was
designed and simulated using Labview Software. The mathematical models were developed for
sensing three physical quantities: temperature, gas, and pressure. Four CNT groups on a chip
(two for gas sensor, one for temperature, and a fourth one for pressure) were utilized in order to
perform sensing multiple parameters. The proposed fabrication processes and the materials
used were chosen to avoid the interference of these parameters on each other when detecting
one of them. The simulation results were translated into analog voltage from Labview software,
transmitted via Bluetooth network, and received on desktop computers within the vicinity of the
sensor system. The mathematical models and simulation results showed as high as 95%
accuracy in measuring temperature, and the 5% error was caused from the interference of the surrounding gas. Within 7% change in pressure was impacted by both temperature and gas interference.
measurements & instrumentation.
Transducers are devices that convert one form of energy to another. Silicon can be used in smart sensors and transducers due to its piezoresistance and ability to detect various signals including light, force, temperature, and chemicals. Smart sensors integrate transduction elements with electronics, which provides advantages like smaller size, self-calibration, computation, communication, and multi-sensing capabilities.
Amit mahto final
This document discusses different types of current sensors and a new generation of current sensors based on the magneto resistive effect. Early current sensor solutions measured voltage drops across resistors or used transformers, which did not allow DC measurement. Hall current sensors and magneto resistive field sensors were developed to address these issues. The new generation of magneto resistive current sensors are extremely compact, offer tight tolerances, high bandwidth, and low price. They require no magnetic core or shielding and will have applications in automotive and energy systems due to their advantages over previous technologies.
Ir thermography
This document provides an overview of infrared thermography and its application in electrical system fault diagnosis. It begins with an introduction to infrared thermography, describing its history, basic principles of infrared radiation, and how thermography works. The document then discusses advantages and limitations of thermography, as well as how it can be used to detect various types of electrical faults. Specific applications of thermography for conditions monitoring of electrical equipment are also covered. The document provides details on infrared cameras and challenges of thermography for electrical systems. Overall, the document presents infrared thermography as a tool for non-destructive testing of electrical systems to detect faults and failures.
An embedded passive resonant sensor using frequency diversity technology for ...
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Sensors
it tells about different type of sensors with avaliable pictures and fascinating information.it is marvellous.
An embedded passive resonant sensor using frequency diversity technology for ...
An embedded passive resonant sensor using frequency diversity technology for ...ieeeprojectsbangalore
This paper presents a wireless passive temperature sensor designed for high-temperature applications up to 1000°C. The sensor uses an embedded LC resonant circuit containing a fixed inductance coil and temperature-variable capacitance in an alumina ceramic substrate. Temperature measurements are made wirelessly by detecting the frequency diversity of the sensor as the capacitance varies with temperature changes in the high-temperature environment. Experimental results showed the sensor has an average sensitivity of ~2 KHz/°C.PROTECTION OF ELECTRICAL EQUIPMENT USING 3D THERMOGRAPHY AND IMAGE PROCESSING
This paper revolves around a thermal imaging technology that enhance the perception and awareness towards the objects we see around us. Here, we are using this technology for the protection and defect detections of electrical power equipment. Starting from the origin of infrared we will go through the development and research on thermography. Then, it is followed by the real-time 3 dimensional thermography using Matlab and thermal imaging camera. Then the systematic procedures for the temperature measurement thereby detecting the faults in the electrical power equipment using 3D thermography. And then taking the corrective action by guiding the automation software’s according to the temperature signatures of the devices. In addition, this paper presents the outline of the previous researches related to the project.
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Automation of temperature variation setup for impedance analyzer using LabVIEW
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Magneto Optic Current Transformer Technology (MOCT)
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Speech measurement using laser doppler vibrometer
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Dip based onlyn control system.
This document provides an overview of a presentation on instrumentation and digital image processing. It discusses remote monitoring and control, analog sensors, digital cameras, and the advantages of digital image processing over analog sensors. It also summarizes error analysis concepts like gross errors, systematic errors, random errors, instrumental errors, environmental errors, and unpredictable errors. Additional topics covered include transducers, input and transfer characteristics, distance measurement techniques, and examples of research in color classification and visual tracking.
Optical sensor
This document discusses using an optical sensor to measure tilt angle in motorcycles. It describes the sensor parameters, how tilt angle is defined and calculated using sensor measurements, and how the sensor data is processed. Test results from using the sensor on racetracks are presented. The advantages of the optical sensor approach include its small size, low cost and weight. Drawbacks include interference from the environment and roughness of the road. The measurement of tilt angle is useful for applications like anti-lock braking systems.
Fibre optic pressure and temperature sensor
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RADIATION HARDENED CHIPS
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Passive Hybrid MEMS for High-Temperature Telemetric Measurements
- 9. Components of MEMS
- 11. Image of the hybrid telemetric MEMS.
- 13. Microscope image of interdigitated capacitor
- 15. Bent Beam structure .
- 17. Equivalent model of the interdigitated capacitor and an impedance diagram measured at 270 ◦C [(a) modulus and (b) phase].
- 18. Impedance module of the interdigitated capacitor measured at different Temperatures(100 ◦C to 330 ◦C.)
- 21. Microscope image of the inductor A1 realized by thick-film deposition on alumina.
- 22. Microscope image of the inductor B1 realized by photolithography
- 23. Equivalent model of the planar inductor and impedance diagrams at different temperatures.(23 ◦C to 340 ◦C)
- 28. BLOCK DIAGRAM OF INDUCTIVE TELEMETRY
- 31. Modulus and phase of the impedance measured from the terminals of the readout inductor.
- 35. Modules of hybrid sensor measured using impedance analyzer at different temperatures.
- 36. Phase of hybrid sensor measured using impedance analyzer at different temperatures
- 38. Capacitance sensor values directly measured and compared with the calculated ones.
- 39. Temperature values measured with the Pt100 and compared with the Min-Phase and 3-Resonances calculated values.