传感技术学报2025，Vol.38Issue(3)：416-420,5.DOI:10.3969/j.issn.1004-1699.2025.03.006
基于PT对称LC传感的轴承温度-振动测量
Bearing Temperature and Vibration Measurement Based on PT-Symmetric LC Sensing
摘要
Abstract
In order to monitor the health status of bearings during operation and realize fault self-diagnosis to prevent major accidents,a dual-parameter measurement method based on PT-symmetric LC sensing is proposed,which can simultaneously measure the tempera-ture and vibration displacement of bearings online.By applying the concept of PT symmetry in quantum mechanics to LC sensors,the phenomenon of the dual frequencies varying with temperature and vibration displacement can be achieved based on the dual-resonant frequency characteristic of the system in the exact PT-symmetric phase.The LC sensor is a single resonant circuit composed of a planar inductor connected to a temperature sensitive capacitor.The readout coil and the sensor coil wirelessly transmit signals and energy through inductive coupling,and the coupling distance changes with the vibration displacement in real time.Results of simulation show that the high frequency of the system has higher sensitivity in the temperature range of 0℃-50℃and the vibration displacement range of 0 mm-0.1 mm,with values of-0.195 MHz/℃and-20.896 MHz/m respectively,indicating that the sensor designed according to the proposeed method can measure the temperature and vibration displacement simultaneously.关键词
PT对称/LC传感器/轴承/温度/振动位移Key words
PT Symmetry/LC sensor/bearing/temperature/vibration displacement分类
信息技术与安全科学引用本文复制引用
周彬彬,胡博琦..基于PT对称LC传感的轴承温度-振动测量[J].传感技术学报,2025,38(3):416-420,5.基金项目
河北省自然科学基金项目(F2024210041) （F2024210041）
河北省电磁环境效应与信息处理重点实验室自主课题(ZZKT-202302) （ZZKT-202302）
