Top plate displacement monitoring instrument

The utility model discloses a top plate displacement monitoring instrument which is characterized in that the monitoring instrument comprises a shell that is internally provided with a mechanical part and an electronic part; the mechanical part comprised a thread wheel fixed on the shell; the thread wheel is provided with a winding spring for tensioning and resetting; a steel wire rope is fixed and wound on the thread wheel, and the other end of the steel wire rope is wound outside the shell and fixedly connected with an anchoring device; the electronic part comprises a power supply, a singlechip as well as a conversion circuit, a signal amplification circuit and a potentiometer which are sequentially connected with the singlechip; the potentiometer is connected with the thread wheel by a rotating shaft; and the singlechip is connected with a signal processing circuit and is connected with an upper computer by a signal transmission part. Compared with the prior art, the top plate displacement monitoring instrument has the functions of real-time displaying, recording, transmitting, alarming and the like for the top plate displacement state.