After the research of fundamentals of sonar ranging and analysis of piezoelectric transducer parameter, a new circuit system based on PIC16C74 is proposed and designed.

• 本文在对声纳测距原理及水声换能器参数进行研究分析的基础上，提出并设计了基于PIC16C74处理器芯片的传感器电路系统。