Research Of Net Interface Module On Wheel Detection Of The Train

The paper is based on 8-bit ordinary Micro-controller. Aiming at demand of connecting embedded systems with Internet, the scheme that connect embedded systems to Internet via MCU based on TCP/IP Protocol is obtained and realized in this PaPer.At first, the paper explain the prospect of the reserch of net interface module on wheel detection. After the introduction of the main solution of several kinds of the embedded Internet technology domestic and iniemational currently, through the detailed analysis to standard TCP/IP, and combining the characteristic of the Micro controller Units, thePaper Puts forward the solution of embedded Internet Platform based on the 8—bit Micro controller Units. In the protocols, the paper mainly introduce the IP, UDP, ICMP and ARP.This paper analyzes the TCP/IP Protocol system in detail. In view of the source of AT89C51, the TCP/IP Protocol 15 Predigested in order to realize it in AT89C51. It also introduce the hardware structure , the memory structure and the method of receiving and delivering datum bundle of RTL8019AS chip.In order to validate the validity of the system, the paper designed the applying program about TCP/IP protocol to realize it.The character of the system is its low cost. It can be connected to Internet conveniently via existing network port. It can also be connected to other embedded machines conveniently.