基于ARM和Linux的数据采集系统及其在电能质量监测中的应用

本文从数据采集的实际需求出发,提出以32位ARM920T内核的S3C2440A微处理器为核心,在基于Linux嵌入式操作系统以及Qtopia图形界面的软件平台上,移植网页服务器Boa,形成具有图形界面显示、网页发布、数据采集、存储、传输等功能的数据采集系统平台。在此平台基础上,通过应用接口电路的扩展和用户程序的设计,研制了一款电能质量监测终端,实现了电网电量参数的数据采集、处理与存储工作。该设备还可将采集到的数据通过GPRS无线网络发送到上位机,结合上位机软件对电能质量进行监测、分析。随着电力系统电能质量监测装置趋向小型化、智能化,该系统将会得到广泛的推广和应用。

An ARM & Linux Based Data Collection System and its Application In Electric Energy Quality Monitoring

This article proposes a data collection system based on S3C2440A MPU with a 32-bit ARM- 920T core by porting the web-server BOA to embed- ded Linux platform with Qtopia graphic user interface （GUI）. The accomplished system implements multiple functions, including graphical display, webpage releases, data collection, storage and transportation etc. On the basis of this platform,an electric energy quality monitoring terminal is developed by extending application circuit and designing user-space program, which collects, processes and stores power grid parameters, Furthermore, this device is capable of transferring data to host PC via GPRS where PC software monitors and analyses the power quality on the fly. This system is believed to be extensively applied in the future since the power monitoring devices require miniaturization and intelligence.