基于最小二乘法的用电器在线识别系统  

Electrical appliances online identification system based on least squares method

作　　者：李高宇 韦洪浪 吴世贵 韦宁燕 LI Gaoyu;WEI Honglang;WU Shigui;WEI Ningyan(Guilin University of Technology at Nanning,Nanning 532100,China;Nanning College of Technology,Guilin 541006,China)

机构地区：[1]桂林理工大学南宁分校,广西南宁532100 [2]南宁理工学院,广西桂林541006

出　　处：《现代电子技术》2025年第6期57-62,共6页Modern Electronics Technique

基　　金：2023年第二批崇左市科技计划自筹项目(2023ZC055688);2024年第二批崇左市科技计划自筹项目(2024ZC047995)。

摘　　要：用电器老化、长时间工作、忘记关闭等不当操作容易导致短路和漏电,甚至引发火灾,造成严重的经济损失。为此,提出一种基于最小二乘法的用电器在线识别系统。该系统首先通过高速ADC采集主线路上整周期的电流波形信号;然后进行最小二乘法计算,从而识别出用电器的在线状态;最后采集线路电压、频率、温度等数据,发送到串口屏进行显示,并通过WiFi模块将数据上传至云服务器,用户可以在手机APP远程查看和管理用电器。实验结果表明,所设计系统运行稳定可靠,识别正确率高,具有较强的实用性,可以满足日常生活对用电器的监测需求。Improper operations such as aging of electrical appliances,long working hours,and forgetting to turn off can easily cause short circuits and leakage,and even lead to fires resulting in serious economic losses.Therefore,an electrical appliances online identification system based on the least squares method is proposed.The system can acquire full-cycle current waveform signals from the main line by means of high-speed ADC and then perform calculations using the least squares method to identify the online status of electrical appliances.The system also can collect line voltage,frequency,temperature and other data,send it to the serial screen for display,and upload the data to the cloud server by means of the WiFi module.Users can view and manage electrical appliances remotely in the mobile APP.The experimental results show that the designed system runs stably and reliably,and has high recognition accuracy and strong practicability,which can meet the daily life monitoring needs of electrical appliances.

关 键 词：用电器识别 最小二乘法 STM32 电流互感器 电压互感器 电参数测量 

分 类 号：TN915.05-34[电子电信—通信与信息系统] TP277[电子电信—信息与通信工程]