A Phase Readout Method for Wireless Passive Sensor Used in Pressure Measurement System. Issue 4 (1st October 2015)

• Record Type: Journal Article
• Authors: Hong, Yingping; Liang, Ting; Zheng, Tingli; Zhang, Hairui; Liu, Wenyi
• Is Part Of: Chinese journal of electronics. Volume 24:Issue 4(2015)
• Page Start: 702
• Page End: 708
• Publication Date: 2015-10-01
• Subjects: LC resonant sensor -- Resonant frequency -- Phase difference detection -- Pressure test; pressure measurement -- pressure sensors; phase readout method -- pressure measurement system -- phase difference detection method -- resonant frequency -- integrated modular -- hardware circuits -- LC resonant sensor -- sweep‐frequency detection -- phase readout system -- wireless passive LC resonant sensor -- frequency 1 MHz to 100 MHz -- frequency 0.006 MHz -- pressure 1 bar to 2 bar; Electronics -- Periodicals; Electronics -- China -- Periodicals; Electronics; China; Periodicals; 621.38105
• DOI: 10.1049/cje.2015.10.007
• Languages: English
• ISSNs: 1022-4653

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.