System for carrying out non-contact dynamic measurement on torque of rotating shaft based on optical fibers

The utility model relates to a system for carrying out non-contact dynamic measurement on the torque of a rotating shaft based on optical fibers. Article color-marks are processed on a measured object at a certain interval, an optical fiber probe is arranged above the article color-marks, and the optical fiber probe is firmly fixed on a connecting assembly; and when a measured shaft is running rotatablely, with the rotation of the shaft under different working conditions, a splined rotating shaft generates corresponding angular distortions under different loads, the article color-marks on the splined rotating shaft generate phase differences because of the angular distortions, then a corresponding relation is formed between the phase differences measured by each set of optical fibers and the measured torque value of the measured splined rotating shaft, and according to the phase difference measurement results of the optical fibers, accurate torque change data of the splined rotating shaft can be obtained. Acc