仪器设备通电状态在线监测系统设计  

Design of an online system monitoring the power-on status of instruments and equipment

作　　者：赵二刚[1] 张维[1] 高艺[1] 王艳芳[1] 郭天勇 ZHAO Ergang;ZHANG Wei;GAO Yi;WANG Yanfang;GUO Tianyong(College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China;College of Computer Science,Nankai University,Tianjin 300350,China)

机构地区：[1]南开大学电子信息与光学工程学院,天津300350 [2]南开大学计算机学院,天津300350

出　　处：《实验室科学》2023年第5期66-69,共4页Laboratory Science

基　　金：南开大学2022年实验教学改革项目(自制实验教学仪器设备类)(项目编号:22NKZZYQ02);南开大学2022年实验教学改革项目(实验课程改革类-开放实验项目)(项目编号:22NKSYKF03)。

摘　　要：以嵌入式处理器为核心控制单元结合自制传感器、物联网通信模块,设计并实现了一款实时、非侵入式感知仪器设备电源是否接通的在线监测系统。该系统实时采集仪器设备电源插头附近的电场强度,并对原始信号进行高增益放大,得到与市电同频率的方波信号,可以利用该方波信号的占空比表征仪器设备的通电状态。通过物联网通信模块,利用MQTT(Message Queuing Telemetry Transport)协议将仪器的通电状态传送到自建的远程物联网云平台。实测结果表明该系统运行稳定、可靠,可以实现仪器设备通电状态的在线实时监测,具有较好的应用前景和实用价值。A real-time,non-intrusive online monitoring system for sensing whether the power supply of instruments and equipment is connected is designed and implemented,which uses an embedded processor as the core control unit combined with self-made sensors and IoT communication modules.The system collects the real-time electric field intensity near the power plug of the instruments and equipment,and amplifies the original signal with high gain to obtain a square wave signal with the same frequency as the electric supply.The duty cycle of the square-wave signal can be used to characterize the power-on status of the instruments and equipment.Based on the MQTT(Message Queuing Telemetry Transport)protocol,the power-on status of instruments and equipment is transmitted to the self-built remote IoT cloud platform through the IoT communication module.The actual measurement results indicate that the system operates stably and reliably,and can achieve online real-time monitoring of the power-on status of instruments and equipment.Therefore,this system has good application prospects and practical values.

关 键 词：仪器设备通电状态在线监测 MQTT 物联网云平台 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]