基于LoRa和ARM的电机实时温度在线监测系统研究

Research on Real-time Temperature Online Monitoring System of Motor Based on LoRa and ARM

针对中大型电机在温度监测过程中存在的传输距离近及抗干扰能力弱的问题,提出了一种基于LoRa无线通信和虚拟仪器的电机温度在线监测系统。系统将温度传感器实时采集的数据通过温度信号调理电路转化为下位机可以处理的电压信号,下位机对采集的一组电压信号模数转换后进行滤波处理及异或校验处理,通过LoRa模块将处理后的数据打包发送给上位机,上位机软件LabVIEW实现电机在运行过程中各路温度参数的在线监测、数据的保存与查询、温度补偿、上限阈值报警等。结果表明,基于LoRa和单片机的电机温度在线监测系统具有测量精度高、实时性强、传输距离远及抗干扰能力强的优点。

Aiming at the close transmission distance and weak anti-interference ability of medium and large-sized motors in the temperature monitoring process,an online temperature monitoring system based on LoRa wireless communication and virtual instrument is proposed.The system converts the data collected by the temperature sensors in real time into a voltage signal that can be processed by the lower computer through the temperature signal conditioning circuit,and the lower computer performs filter processing and XOR check processing on a set of voltage signals after analog-digital conversion,and the processed data is packaged and sent to the upper computer through the LoRa module.In the upper computer software LabVIEW,the online monitoring of the temperature parameters of the motor during the running process,data storage and query,temperature compensation,upper threshold alarm and so on are realized.The results show that the motor temperature online monitoring system based on LoRa and virtual instrument has the advantages of high measurement accuracy,strong real-time performance,long transmission distance and strong anti-interference ability.