Center mass block acceleration sensor and working method thereof

The invention relates to a central mass block acceleration sensor and a working method thereof, and belongs to the technical field of acceleration sensors, and the central mass block acceleration sensor comprises a mounting shell, a locking ring, a core body, a pressing cap, a mouthpiece cover, a mouthpiece and a contact pin, a locking ring used for locking the core body is arranged in the mounting shell, piezoelectric ceramics and a mass block are sequentially nested in the locking ring, and the mass block is located in the center of the mounting shell; the pressing cap is in threaded fit with the mounting shell and used for pressing the upper portion of the locking ring, the upper portion of the mounting shell is connected with the mouthpiece cover, the mouthpiece cover is connected with the mouthpiece, and the inserting needle is mounted in the mouthpiece. Through holes are formed in the centers of the pressing cap, the mouthpiece cover and the mouthpiece, the mass block is connected with a lead, and the l