Scene Based On Ethernet Interface Remote Monitoring Device

Along with development and popularization of communication technology, network technology and Semi-conductor technology, the case of embedded technology combining with network technology have become very mature. To realize long-distance control, maintenance and trouble diagnosis based on appliance wiring, industrial control equipment or the instrument, safety supervises and control system, car electronics etc, and network have become an important trend of the development of embedded system.This paper analyzes and discusses the current embedded Ethernet interface to achieve several design options. With the combination of low-end DSP processor based on the characteristics of embedded devices, the paper raises a program of Scene Based on Ethernet interface remote monitoring device, and achieves the data of DSP processing system long-distance transmission and monitoring. the Composition of Ethernet interface module are mainly by 8-bit MCU and CP2200 Ethernet controller, as long as the communication of DSP system and the microcontroller of Ethernet Access System module through parallel model can be realized the function of the Network Access in whole DSP system .As the major difficulties of embedded systems access network is the realization of TCP / IP protocol stack requiring too much resource of system, the resource of Embedded systems is limited, So in the process of software implementation of TCP / IP protocol stack, the need for protocol stack appropriate reductions and optimization application to the specific environment, in this paper, reasonable simplified the standard TCP / IP protocol, Achieves the embedded TCP / IP protocol stack based on 8-bit MCU.In the hardware designation, the circuit of hardware in communication between MCU and DSP and the Ethernet interface module are achieved in this paper.System software designation is introduced in this paper, which is consist of asynchronous parallel communication between DSP and MCU program, the driver of network card and TCP/IP protocol program module. Finally, by testing the system and the analysis of data, the method achieved in this paper can make DSP embedded system connect with Ethernet .So long-distance control and maintenance based on DSP embedded system also come true.