电磁声传感器能够非接触地在金属材料中产生和探测超声波，由于不需耦合剂，使得它能够用于高温、高速和粗糙表面这些常规检测方法难以胜任的场合。介绍了所研制的表面波电磁声传感器的工作原理和进行驻波试验的部分结果分析。 Electroacoustic sensors are capable of producing and probing ultrasonic waves in metallic materials without contact, making them ideal for applications where conventional detection methods such as high temperature, high speed, and rough surfaces are not required due to the absence of couplant. The working principle of the developed surface acoustic wave acoustic sensor and the partial result analysis of the standing wave test are introduced.