Research And Realization Of Internet AMR Based On Embedded Web Server

With the development of economy and the improvement of people's livings tandard, people's requirements on the intelligence of electrical meter have been improved daily,and conventional meter reading has become troublesome work and is not adapt to the progress of society any more. However, with the rapid development of electronic technology,computer technology, communications technology, intelligent remote automatic meter reading (AMR) has become possible to replace tedious hand labor and provide higher quality services.Embedded system technology is one of the most pop technologies in the field of electric products design recent years.At present,it has been applied widely to industry control,intelligent trafic , information home electric appliances and commonality service etc.Embedded system is bringing far-reaching affection to humans back PC times.It will be a simple and reliable programme and an important apply to realize remote automatic meter reading on the embedded system.This article aiming at traditional electric power meter's shortcomings and scarcities and combining current embedded system technology and network technology studies and designs an embedded network electric power meter system,It is based on the S3C44B0X processor andμClinux operating system. It introduces that CS8900A net chip drive programme was designed as the thinking of module,based on the hardware developing platform constructed,and using CS8900A net chip and S3C44B0X processor containning ARM7TDMI kernel.The net chip programme contains the init of net chip,the transmit and receive of data and interrupt function programmes; TCP/IP protocol was be reduced,and TCP,IP,ARP,ICMP were completed then,and simple TCP/IP protocols are completed having the normal communiting function and system resources are saved;Base on the workmode of Client/Server and the thought of Socket programme, HTTP Webserver appling programme was completed;Finally,CS8900A net chip drive programme and HTTP Web Server appling programme were add into theμClinux kernel,which was built and written into the developing board.An simple,reliable and realtime Embedded Web Server was designed. When user visit the Webserver by network browser,Programme transmits the electric energy data collected by electric energy sampling terminal to user terminal , realizing network automatically transcribing meter.