Design And Realization Of Security Defense System Based On ARM9 And GPRS

With the rapid development of economic and the raise of living standards in China, and living standards rising, people have become increasingly demanding security defense system. Safe, comfortable, fast and convenient Intelligent Community has become the mainstream of development. But the security defense system only based on conventional single chip as a key component of Intelligent Community,can not meet people's needs.The paper against this background, has first studied the embedded GPRS security defense system in the domestic and foreign research and the application present situation. We have designed and implemented an ARM9 and GPRS-Based security system. The system uses wireless transmitting ZigBee module to receive signals collected by sensors, after microprocessor receiving the alarm signal, the system automatically opens the camera for video surveillance, video images will be collected through the GPRS module connected to the Internet, sent to the monitoring center PC, If emergency, the property management personnel will inform home owners, and take appropriate measures to achieve security.The paper has described the circuit details of hardware module which includes ARM9 microprocessor S3C2410, GPRS module MC39i, wireless transceiver module of ZigBee in the entire security system, highlighted the design principles of image acquisition module; for another, software platform are also dealt with the establishment of: the start of Bootloader, production of the root file system, Linux kernel porting and cutting. And introduced on the compression algorithms of the image processing and the constitution of image transmission platform; in the end, the system has been tested, the test results are given figure; complete the overall design of the system.