Underground pressure wave control device

The invention relates to the technical field of drilling engineering, in particular to an underground pressure wave control device. The underground pressure wave control device comprises a battery short section, a control short section and an LEMO joint, wherein the right end of the battery short section and the left end of the control short section are fixedly arranged together by the LEMO joint; a pressure sensor for receiving pressure wave information generated by starting and stopping a sludge pump, a low-pass filter, a front amplifier, an A/D (Analog to Digital) converter and an FPGA (Field Programmable Gate Array) are arranged inside the control short section; and the signal output end of the pressure sensor and the signal input end of the low-pass filter are electrically connected by a guide wire. The underground pressure wave control device has a rational and compact structure, and is convenient to use; the battery short section, the control short section, a performing short section and a coder are used in a matched manner, so that the multi-way unidirectional control function of the underground device is achieved; and besides, the underground pressure wave control device has the characteristics of high reliability, small dimension and strong applicability, reduces the production cost and improves the working efficiency.