Embedded Wireless Network Monitoring And Control Equipment Key Technology Research And Implementation

NMC(Networked Measure Control) is a development direction of measurement and control system. Networked Measurement and Control Instruments is the core of the network-based measurement and control system that composed of the basic unit of measurement and control system, and is the physical basis of data acquisition and controlling. To a certain extent, Its development determines the measurement and control system upgrades and development. Measurement and control instrumentation technology is both cutting-edge technology in modern scientific research, but also the information society key technologies.This article is based network monitoring and control theory, embedded systems and engineering characteristics of concrete and specific requirements, design and implementation of an embedded wireless network monitoring and control instruments. Thesis research work carried out as follows:1,Study the status quo at home and abroad based on the standard of LXI-B of embedded wireless networking measurement and control instruments technology, designed of a practical wireless network architecture and control instruments based on the in-depth analysis of its principles and structure;2,Optional a network interface card(rt2571wf) that support for wirless network communication protocols 802.11b/g, Accprdomg to the characteristics of embedded systems, A wirless network card driver was transplanted successfully;3,In the embedded Linux operating system Support, A network equipment monitoring and control software was designed and implementated; the function of SD card data storage was implemented.4,The function of remote web file download was realized based on the remote file data transfer protocol FTP / HTTP; completed remote network real-time acquisition of image, voice and data by using of HTML, CGI, JavaScript, embedded real-time RTP technologies such as dynamic web page interface;5,A clock synchronization method was given based on the analysis of the IEEE1588 Protocol,and achieved the embedded software clock synchronization;Based on the above study and the Implementation of wireless network instrument, has been applied in the project to achieve the desired results, It indicating the design and implementation technology of this paper is viable.