Research Of Intelligent Defense And Security System Based On Contactless IC Card Technology

This paper had designed a flexible and convenient intelligent security system with high safety index, based on contactless IC card technology and ARM technology. This article first discussed related basic theory about security system, including the security system introduction, composition of RFID system and its working principle and its current research state home and abroad, choice of reader IC(this design chose the MF RC531 transceiver of Philips company IC), RFID communication protocol and other technology of contactless IC card security system. According to technical theory above, the subject studied hardware and software design methods of contactless IC card reader in detail. The hardware design included MF RC531 interface circuits and LCD screen, keyboard, reader antenna, buzzer driver circuit; Software part included the communication between MF RC531 and contactless IC card M1, data communication between reader and microprocessor, communication between GPRS module and microprocessor, and GPRS module and remote terminal communication software design. Once somebody was trying to intrude into the system, the buzzer would be start and alarmed. The system would also send short alert message and call the manager through GPRS remote transmission to remote terminal. The system chose ARM7 chip LPC2290 microprocessor as the main controller based on embedded real-time operating system,μC/OS-Ⅱfor communication software development of RFID system.In addition, the article studied communication key and its algorithm of contactless IC reader system, in order to seek a high key design scheme to meet MF1 IC S50. After efficient tests and analysis, this paper, based on the ARM and contactless IC card technology, had designed an intelligent security system with high safety index, low power consumption, strong anti-jamming capability, could be applied to some important occasions required higher safety performance.