A Phase Readout Method for Wireless Passive Sensor Used in Pressure Measurement System

HONG Yingping; LIANG Ting; ZHENG Tingli; ZHANG Hairui; LIU Wenyi; XIONG Jijun

doi:10.1049/cje.2015.10.007

Volume 24 Issue 4

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Article Navigation > Chinese Journal of Electronics > 2015 > 24(4): 702-708

HONG Yingping, LIANG Ting, ZHENG Tingli, et al., “A Phase Readout Method for Wireless Passive Sensor Used in Pressure Measurement System,” Chinese Journal of Electronics, vol. 24, no. 4, pp. 702-708, 2015, doi: 10.1049/cje.2015.10.007

Citation:

HONG Yingping, LIANG Ting, ZHENG Tingli, et al., “A Phase Readout Method for Wireless Passive Sensor Used in Pressure Measurement System,” Chinese Journal of Electronics, vol. 24, no. 4, pp. 702-708, 2015, doi: 10.1049/cje.2015.10.007

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A Phase Readout Method for Wireless Passive Sensor Used in Pressure Measurement System

doi: 10.1049/cje.2015.10.007

1.
Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China;
2.
Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China

Funds: This work is supported by the General Program of National Natural Science of China (No.61471324) and the National Science Foundation for Distinguished Young Scholars of China (No. 51425505).

More Information

Corresponding author: XIONG Jijun (corresponding author)was born in 1971. He received thePh.D. degree in Tsinghua University. Hein now a professor and a doctoral supervisor.His research interests include the fundamentaltheory and instrumentation researchon dynamic mechanical parametersmeasurement, mainly focus on the scale effectin silicon microstructures based on thetypical electromechanical conversion principle,the evolution law in the nanometer scale, and the applicableboundary scope under thermal environment. (Email: xiongjijunnuc@126.com)
Received Date: 2014-09-29
Rev Recd Date: 2015-02-26
Publish Date: 2015-10-10

Abstract

Abstract

A phase difference detection method used for reading the resonant frequency through mutual coupling is designed to meet the pressure measurement in harsh environments, and a testing device of integrated modular by developing the hardware circuits is proposed. Description and discussion of the novel theoretical model in the phase readout system is presented, and a pressure test platform based on the phase difference detection is also established, which is to measure the frequency of a LC resonant sensor on the basis of 96% alumina ceramic substrate. The experimental results show that the proposed phase difference readout system presents sweep-frequency detection in the range of 1-100MHz bandwidth, and a high frequency resolution of 0.006MHz. Sensitivity of the sensor is approximately 0.225 MHz/bar from 1 bar to 2 bar. The accuracy and functionality of the phase readout system have emphasized a wider engineering application range, so that we can make it possible that the wireless passive LC resonant sensor revolves well in practical engineering occasions outside the laboratory environment.
- LC resonant sensor,
- Resonant frequency,
- Phase difference detection,
- Pressure test

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References(15)

References

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