为了实时监测工业生产过程中疏水器和泄压阀的开关状态和泄漏,提出了一种基于WirelessHART协议的声波变送器设计方案,通过声波传感器检测阀门的开闭和泄漏情况,由WirelessHART网络将声波信号送到主机系统。结果显示,变送器可以较好地反应阀门开度趋势,声波信号的曲线与阀门开度呈现明显的正相关性。通过测试验证,无线声波监测系统可以较好地监测阀门泄漏情况,从而判断介质的排放情况。 In order to monitor the switch state and leakage of steam trap and pressure relief valve in industrial production in real time, a design scheme of acoustic transducer based on WirelessHART protocol is proposed. The acoustic sensor detects valve opening and closing and leakage, Sonic signal sent to the host system. The results show that the transmitter can better reflect the valve opening trend, the acoustic signal curve and the valve opening showed a significant positive correlation. Pass the test and verify, the wireless sound wave monitoring system can better monitor the valve leak situation, thus judge the medium discharge situation.