Monitoring System, Arm-based Gprs Wireless Data Transmission

The long-distance supervisory system is necessary system of the production and the management of many important place such as electric powers, the posts and telecommunications, the bank, the transportation, the market and so on needs the information wide-ranging exchange enterprise. The tradition long-distance supervisory system realization way all needs own to construct and to maintain wired or the wireless network generally, the maintenance cost is high, the signal distance is limited. Along with the communication development, original long-distance supervisory system oneself cannot satisfy the various request day by day, we need timeliness to be higher, the signal distance is farther, the cost lower mailing address, this article proposed one kind in light of this based on the GPRS long range data supervisory system.This article used GPRS in the technical TCP transmission mode to transmit the image data which the supervisory system gathered, compared the traditional wired network, in the maintenance cost, on the signal distance had the very big enhancement, compared the traditional wireless network in timeliness, the transmission speed, in the reliability had the distinct improvement.The present paper divided several parts to introduce the topic research content in detail. The first part mainly introduced the topic background and the supervisory system development history and each kind of supervisory system comparison. The second part described this system to use hardware develops the platform taking S3C44B0 as the core. The third part described software level design flow taking the uC/OS operatingsystem as the core, including the uC/OS operating system and the FAT16 filing system transplant, the actuation work of LCD demonstration and Nand-flash and so on compilation. The fourth part specified concrete software realization of this system image gathering, including the concrete process of reading the image data from CMOS image sensor LM9617 as well as writing the data into the Nand-flash memory. The fifth part specified concrete software realization of this system image data transmission, using the GPRS enterprise public network network way, including two parts of remote terminal and monitoring center. The remote terminal programming including the initialization serial port correspondence, transmits the read-out image data in Nand-flash through GPRS module GM862 to the monitoring center server ; The monitoring center server programming establishes and starts the Socket interception and starts the GPRS correspondence link establishment after receiving the connection request. Finally carried on the test to the supervisory system using TCP and the UDP two transmission modes separately, proving the GPRS TCP transmission mode truly suited in the supervisory system.