Sensors | |
Phase Interrogation Used for a Wireless Passive Pressure Sensor in an 800 °C High-Temperature Environment | |
Huixin Zhang1  Yingping Hong1  Ting Liang1  Hairui Zhang1  Qiulin Tan1  Chenyang Xue1  Jun Liu1  Wendong Zhang1  | |
[1] Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China; E-Mails: | |
关键词: LC resonant sensor; resonant frequency; high temperature; pressure measurement; | |
DOI : 10.3390/s150202548 | |
来源: mdpi | |
【 摘 要 】
A wireless passive pressure measurement system for an 800 °C high-temperature environment is proposed and the impedance variation caused by the mutual coupling between a read antenna and a LC resonant sensor is analyzed. The system consists of a ceramic-based LC resonant sensor, a readout device for impedance phase interrogation, heat insulating material, and a composite temperature-pressure test platform. Performances of the pressure sensor are measured by the measurement system sufficiently, including pressure sensitivity at room temperature, zero drift from room temperature to 800 °C, and the pressure sensitivity under the 800 °C high temperature environment. The results show that the linearity of sensor is 0.93%, the repeatability is 6.6%, the hysteretic error is 1.67%, and the sensor sensitivity is 374 KHz/bar. The proposed measurement system, with high engineering value, demonstrates good pressure sensing performance in a high temperature environment.
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190016969ZK.pdf | 5556KB | download |