摘要
本文介绍了一种以STR912FW44为核心的嵌入式电量监控系统。用户通过使用非接触式射频卡进行身份识别后,系统就给相应的用户供电,同时用相应的传感器元件进行电量采集并记录用电数据,根据功率因数cosφ值,判断是否为恶性负载,是否报警通知用户,以上用电信息均通过RTL8019AS芯片和以太网传输给上位机,上位机可以随时监控到用户的用电信息。本系统实现了按照个人使用量收费的方式,达到了实时监控防止意外发生的目的。
This paper introduces a STR912FW44 at the core of embedded power monitoring system. Users use non-contact radio frequency cards for identification, after identification the system gives users the power supply, at the same time with the corresponding sensor device for collecting electricity and recording of electricity consumption data. According to the power factor value cosφ, to determine whether it is a vicious load and whether inform users by alarm. The messages above-mentioned are all transmitted through the RTL8019AS chip and Ethernet to the PC so that PC can monitor the electricity information for user at any time. This system makes the charging according to the personal usage realized and achieves the aim of real-time monitoring to prevent accidents.
出处
《电测与仪表》
北大核心
2009年第2期52-55,62,共5页
Electrical Measurement & Instrumentation
