Temperature-Insensitive Inclinometer based on Transmission Line Fabry-Perot Resonators
This article reports a novel self-compensated inclinometer with a wide dynamic range and high measurement resolution based on two hollow coaxial cable Fabry-Perot resonators (HCC-FPRs). The HCC-FPR is formed between a metal post that shorts the inner conductor and the outer conductor of the HCC and the water level inside the HCC. Changes in tilt angles result in variations of the water level in the HCC, leading to changes in the cavity length of the HCC-FPR. By tracking the shift of the resonance wavelength of the HCC-FPR, a single HCC-FPR can be used as a sensor device for tilt measurements. Furthermore, two HCC-FPRs are used in the inclinometer design presented herein, which enables the inclinometer to achieve self-compensation for variations of environmental factors, e.g., temperature. The tilt measurement sensitivity of the double-HCC-FPR-based inclinometer is also increased. The proposed inclinometer holds several advantages, such as robustness, ease of fabrication, ease of signal interrogation, low cost, and high measurement sensitivity and resolution.
J. Guo et al., "Temperature-Insensitive Inclinometer based on Transmission Line Fabry-Perot Resonators," IEEE Transactions on Instrumentation and Measurement, vol. 71, article no. 8004210, Institute of Electrical and Electronics Engineers (IEEE), Jan 2022.
The definitive version is available at https://doi.org/10.1109/TIM.2022.3178481
Electrical and Computer Engineering
Keywords and Phrases
Coaxial Cable Device; Fabrya Perot Resonator (FPR); Inclinometer; Microwave Resonator; Tilt Measurement
International Standard Serial Number (ISSN)
Article - Journal
© 2022 Institute of Electrical and Electronics Engineers, All rights reserved.
01 Jan 2022