Research And Implementation Of Embedded Network EAS Supervisory Control System

With the coming of information era, to enable the EAS system be connected with network has already become inevitable trend. This paper through comparing current embedded Internet technology, on the synthetically utilizing of the technology of the digital signal processing, network communication and embedded, the embedded network EAS supervisory control system is studied deeply.In this paper, the related content about the system is studied, and the market's requirements are analyzed, and a new design base on the embedded network EAS supervisory control system is promoted, the supervisory control software of server and the hardware and software of embedded EAS system is implemented and tested. In the hardware design, the ARM7 CPU LPC2114 is used and the door detecting machine, show in locale, serial communication and Internet connected peripheral circuit is designed. The door detecting machine including emitter and receiver, the emitter generates low-frequency stable burglarproof label signal, the receiver receives the signal, sends it to the LPC2114 after processing. In the software design, after comparing the Wavelet and the Fourier Transform, implementing the way to reduce the real FFT operation quantity and using FFT to analyze frequency chart, brings forward a reliable warning strategy; Explants the uIP successfully, modifies the ARP and UDP and implements the browse and setting function by IE explorer. The supervisory control software of server based on database and network communication has the function of system control, devices management, data query and report printing and so on.The fields of the paper involve computer applications, circuit designed, digital signal processing and network communication. The design of this system not only solves the high rate of mis-alarm and lack-alarm exists in current EAS system. On the base above a network control, which has the function of embedded WEB server and API interface is developed to realize network instrument. Over all the paper has referenced value to research the network instrument, embedded equipment and remote monitoring.