Intelligent Entrance Guard System Based On Network Management

With the progress of society and the rapid development of science and technology, intelligent entrance guard system based on radio frequency technology plays a more and more important role in people’s life whether in the unit, school or residential area, etc. The intelligent entrance guard system based on contactless IC card is good favored by the majority of entrance guard developers because of its efficient, fast, the secrecy.At present, most student dormitorys use the traditional mechanical lock which is easy replicated. That brings hidden dangers to the dormitory management, at the same time, it is not convenient to record access information. In the research, this paper proposes use of IC card to open the door on the basis of analysing the existing entrance guard system.The system not only supports a credit card into, and also could query to the information of each entrance guard in the same local area network (LAN).The main work of the paper as follows:1.Firstly analysis the paper research background and the significance of topic selection.Analyze the communication scheme on the market at present, this system uses the ZigBee wireless network and 485 bus together to transfer control information.Mainly introduces the ZigBee technology, and design of database system.2.Summaring the overall design of entrance guard system, including the description of the structure and function of the system.The end node puts data collected through the ZigBee radio frequency module to the coordinator node on the network, then the coordinator node sents out the receive messages in the form of cable which use the query mechanism in turn by single chip microcomputer by connecting RS485 bus. Each coordinator is sent by the stay after the search to ensure the data would be able to reach the PC for storage. Finally match in the database and sent to the end node feedback information. And show it in the form of a web page.3.Design each module specific communication protocol in detail, introduce the idea of each part programming,and the specific design of database and web page. Finally test the performance of the each module and achieve the expected effect.