| At the present stage, Wireless monitor system has become an inevitable part of industrial control. With modernized IT techniques, an information network is built to collect valuable data in time and improve Safety Production Supervision and Management. Among wireless monitor system the choice of wireless network directly influences the quality of the whole system. With the ongoing development of communication technology, the coverage scale of mobile communication is increasingly expanding, Wireless monitor system based on GSM/GPRS network has been adopted largely in industrial control,power supervision, building automation etc. Moreover, Advantages acquired by GSM/GPRS network such as low-cost, non-region limit, high real-time has made it play a more important role in wireless monitor system. Now monitor terminal mainly adopts 8 bits or 16 bits processors, which is overloaded with large scale of information and tasks. In this dissertation, firstly an in-depth study is made on wireless communication net, architecture of wireless monitor system and embedded technology, and the structure is raised regarding the embedded technology based on GSM/GPRS network. On the basis of a multitude of verification and analysis, we design principle prototype computers used in the laboratory, which take the ARM processor as their processor, run with the embedded Linux and communicate with monitor center via GSM/GPRS network.The dissertation analyzes and designs the principle prototype computers in such two aspects as hardware system and software system. For hardware system, the microprocessor of intelligent control node is ARM processor S3C44B0X in 32 bits, GPRS module is SIM100-E, they manage the hardware module severally. For software system, embedded Linux is used as its running system and ppp protocol stack as data link layer protocol. Finally hardware drivers and application programs were develpped after these work according, and the experimental results discussed deeply.After the final joint debugging of system, these principle prototype computers used in the laboratory reach the purpose of design. With the 3G technology the production of this dissertation will be important technical storage for the new wireless monitor system. |
