本文介绍了利用水声遥测遥控技术建立起来的海底管道阴极保护电位检测系统。着重说明检测装置的结构和原理,建立了保护电位的PPM—PTC水声信息传输方式,系统由水上部分和水下部分组成,电位测量采用双参比电极体系(Ag/AgCl和Zn参比电极)。系统能进行远距离(水深200m)、适时、可靠的电位测量。仪器结构简单,抗干扰能力强,测量准确。 This paper introduces the submarine pipeline cathodic protection potential detection system established by using the underwater acoustic telemetry remote control technology. Focusing on the structure and principle of the detector, a PPM-PTC system for underwater acoustic signal transmission is established. The system consists of an aquatic part and an underwater part. The potential measurement uses a dual reference electrode system (Ag / AgCl and Zn reference electrode ). System can be long distance (water depth 200m), timely, reliable potential measurement. Instrument structure is simple, anti-interference ability, accurate measurement.