Non-contact dynamic measurement system for torque of rotating shaft based on optical fibers

The invention relates to a non-contact dynamic measurement system for the torque of a rotating shaft based on optical fibers. Stripe color codes are arranged on a measured shaft at intervals, and fiber probes are additionally mounted above the stripe color codes and firmly fixed onto a connecting component. When the measured shaft rotates, the spline rotating shaft correspondingly has angular deformation under different loads along with rotation of the measured shaft under different working conditions, the stripe color codes on the spline rotating shaft have phase difference by means of angular deformation, the phase difference measured by each group of optical fibers corresponds to the measured torque of the measured spline rotating shaft, and the phase difference is measured by the optical fibers so that accurate torque variation data of the spline rotating shaft can be obtained. The torque of the rotating shaft is measured in a non-contact dynamic online manner, the rotating shaft is not provided with an a