Target type flow sensor based on fiber bragg grating

The utility model relates to the field of flow detection. The target type flow sensor based on the fiber bragg grating comprises a sensor body, the device comprises a three-way pipe, a target disc, acantilever beam, an end cover, a conduction fiber and a fiber grating. The three-way pipe is inverted-T-shaped, pipe openings in the two sides of the lower end of the three-way pipe are used for beingcommunicated with a to-be-measured pipeline, pipe openings in the upper end are used for being in sealed connection with the end cover, the upper end of the cantilever beam is connected to the end cover, the lower end of the cantilever beam is connected to the target disc, and one end of the conduction optical fiber is connected with the fiber grating. The two fiber gratings and the two corresponding conduction optical fibers are arranged, one fiber grating is connected to the cantilever beam, and the other fiber grating is connected to the rear portion of the target disc. According to the utility model, the measureme