Measuring apparatus for testing dynamic strain, vibration and acceleration

The utility model relates to a measuring device which is used to measure dynamic strain, vibration and acceleration, and belongs to the technical field of dynamic strain, dynamic strain and acceleration measurement. The measuring device comprises a light source, a fiber grating, a ring-shaped device, a photoelectric detector, a signal processor, a base and a cantilever beam. The measuring device is characterized in that one end of the cantilever beam is fixed on the base, a mass block is fixed under the other end, the fiber grating is fixed on the upper end of the cantilever beam, the fiber grating is connected with the ring-shaped device through conduction fiber, one end of the ring-shaped device is connected with the light source, the photoelectric detector is placed on an outgoing end port of the ring-shaped device, and the photoelectric detector is connected with the signal processor through an interface of the signal processor. The measuring device has simple and rational structure, low cost, small volume and convenient operation when in use.