Preliminary Study on Noncontact Measurement of Mechanical Vibration by Near-field Microwave

In this work, noncontact measurement of mechanical vibration is studied with near-field microwave method. Two kinds of microwave sensors are used: complimentary split ring resonator (CSRR) and various planar antennas. For the former sensor, a vibration test platform is used to simulate a vibrating o...

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Bibliographic Details
Main Authors: Ye, Ming, Bai, Yongjiang, Shi, Haolin, Chen, Jianqiao, Yang, Fang
Format: Conference Proceeding
Language:English
Subjects:
antenna
Antenna measurements
CSRR
mechanical vibration
Microwave antennas
Microwave integrated circuits
Microwave measurement
microwave sensor
noncontact measurement
Planar arrays
Vibration measurement
Vibrations
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Summary:In this work, noncontact measurement of mechanical vibration is studied with near-field microwave method. Two kinds of microwave sensors are used: complimentary split ring resonator (CSRR) and various planar antennas. For the former sensor, a vibration test platform is used to simulate a vibrating object and a vector network analyzer (VNA) is used to measure the time dependent |S21| of the CSRR. For the latter sensor, a fork with resonance frequency of 129 Hz is used as vibration object. A home-made system is used to measure the time dependent return loss of the antenna sensors. Both methods obtain periodical waveforms with periodicity corresponding to the predefined vibration frequency. Thus, preliminary results verify that the near-field microwave method is suitable for noncontact measurement of mechanical vibration.
ISSN:2836-7782
DOI:10.1109/ICEICT61637.2024.10671368