Reactor coolant pump rotating speed signal measuring device and method based on optical fiber sensing

The invention belongs to the technical field of optical fiber sensing, and particularly relates to a reactor coolant pump rotating speed signal measuring device and method based on optical fiber sensing, and the measuring device comprises a reactor coolant pump rotating shaft, a reflector, an optical fiber, a demodulator and an upper computer; the reflecting mirror is fixed on a reactor coolant pump rotating shaft, the optical fiber is aligned with the reflecting mirror, the optical fiber is connected to the demodulator, and the demodulator is connected with the upper computer. According to the invention, high-precision measurement of the reactor coolant pump at a low rotating speed can be realized; based on optical fiber sensing, compared with an existing rotating speed sensor of the reactor coolant pump, the rotating speed sensor has the advantage of resisting electromagnetic interference; according to the invention, miniaturization can be realized. 本发明属于光纤传感技术领域，具体涉及一种基于光纤传感的反应堆冷却剂泵转速信号测量装置及方法，该测量装置包括反应堆冷却