Fiber grating sensor for simultaneously measuring real-time rate and displacement

The invention relates to the field of fiber bragg grating sensors, and discloses a fiber bragg grating sensor capable of simultaneously measuring real-time rate and displacement, which comprises a shell, a movable probe is arranged at one end of the shell, and a support, a rack I, a rack II, a gear I, a gear II, a probe, a reset device, an optical fiber and a spring I are arranged in the shell; the other end of the rack I is connected with a spring I; the gear I is fixedly connected with the gear II; the gear I is meshed with the upper surface of the rack I; the gear II is meshed with the lower surface of the rack II; the lower end of the reset device is connected with a probe. The head of the probe is located on the wavy surface of the upper surface of the second rack. The middle part of the optical fiber is adhered to the side surface of the probe, one end is positioned in the shell, the other end is tensioned, adhered to the inner surface of the shell and then led out, and a grating I and a grating II are