无线微功耗阀塔漏水传感器设计与实现

Design and Implementation of Wireless Micro Power Valve Tower Leakage Sensor

针对阀塔结构特征及监控需求,设计了一种无线阀塔漏水传感器。该传感器由低功耗高精度漏水检测电路、超低功耗微控制器和LoRaWAN低功耗通信模块构成。同时基于中断触发、定时唤醒及低功耗通信等低功耗思路设计了低功耗漏水检测及通信机制,实现了检测漏水报警功能、超低功耗、超远距离无线通信、定时发送心跳功能、无触发保持休眠功能和漏水自动唤醒功能。较传统有线及其他通信方式的漏水检测手段具有部署快捷、维护便捷等优点;克服了因通信功耗大导致的传感器待机时间不足、维护成本高、传输距离短、费用高昂和安全性不足等种种难点。可快速有效地实施无人化远程监控报警。经检测及测试,传感器测试灵敏,最低运行功耗低至21μA实现7 km有效传输。

According to the structural characteristics and monitoring requirements of valve tower,a wireless valve tower leakage sensor is designed.The sensor consists of micro-power and high-precision water leakage detection circuit,ultra-micro power consumption microcontroller and LoRaWAN micro-power communication module,based on micro-power ideas such as interrupt trigger,timing wake-up and micro-power communication.Micro-power leakage detection and communication mechanism are designed to realize the functions of leakage detection alarm,ultra-micro power,ultra long distance wireless communication,timing heartbeat sending,non triggering sleep keeping and leakage automatic wake-up.Compared with the traditional wired and other communication methods,the method presented has the advantages of fast deployment and convenient maintenance;at the same time,it also solves the difficulties such as insufficient sensor standby time,high maintenance cost,short transmission distance,high cost and insufficient security caused by high communication power consumption.It can quickly and effectively implement unmanned remote monitoring and alarm.After detection and testing,the sensor test is sensitive,the minimum power consumption is as low as 21μA,and the effective transmission is more than 7 km.