Wireless Real-time Test Method for In-situ Vibration of Bearing Outer Ring
XUE Wenzhi
WU Qiannan
LI Chen
Abstract：Aiming at the problem that the vibration of bearing outer ring is difficult to detect in real time under high tempera-ture rotating environment,a high temperature resistant wireless passive vibration accelerometer for in-situ measurement of bearing outer ring is designed in this paper.The eddy current electromagnetic coupling method is used to measure the vibration signal of the bearing surface by changing the distance between the eddy current probe coil and the metal bearing.Copper wire is used as the mate-rial to prepare high temperature resistant eddy current coil.The output signal of the designed high temperature resistant wireless pas-sive vibration sensor under 1 g～9 g acceleration excitation signal is verified on the vibration test platform.The results show that the output voltage signal of the sensor is linearly related to the input vibration signal.The sensitivity of the sensor is about 0.1549 mV/g,and the repeatability error is small.The wireless real-time detection of bearing outer ring vibration signal in high temperature envi-ronment can be realized.
Keywords：bearing outer ringvibration sensorin-situ testwireless passive
Publication Date：2025-12-20
Online Publishing Date：2026-03-23(First online date of this platform, not the publication date of the document)
Pages：6( 164-169 )