On-line temperature measuring method of moving part of rolling bearing

Provided is an on-line temperature measuring method of a moving part of a rolling bearing. The on-line temperature measuring method of the moving part of the rolling bearing comprises the following steps of step (1) evenly arranging temperature sensing structures on the moving part of the rolling bearing, wherein each temperature sensing structure is integrally S-shaped, and is formed by two similarly U-shaped thermal bimetallic strips in a welding mode; step (2) fixing a charge coupled device (CCD) image sensor at the tail end of one of the temperature sensing structures in an opposite mode; and step (3) obtaining a value of deformation of each temperature sensing structure through the CCD image sensor, carrying out analysis processing on the value through an external data processing device, and finally obtaining a temperature value of the moving part, to be detected, of the rolling bearing. The on-line temperature measuring method of the moving part of the rolling bearing is capable of obtaining changes of