Research On Applications Of Information Management System Of Intelligent Community On Technology Of Lon Works

Over the past decade, a silent revolution has taken place in the networking world. LonWorks technology as a new control technology of network is at the forefront of this technological revolution because of the characteristic of fine open system, interaction operation, network adaptability, flexible network topology and object-oriented network communication design, and widely used in the fields of the intelligent building and intelligent community etc.The paper has put forward the concept of the intelligent community and its function goal at first. After analyzing the advantage of LonWorks technology which used in the construction of intelligent community, the LonWorks field bus technology has been introduced in detail, including LonWorks network architecture, LonTalk communication protocol, LonWorks network hardware realization and LonWorks developing tools. Then, an integrated information management system of intelligent community has been structured based on visual angle of application. Chapter 3 of this paper provides ground floor network design of the intelligent community mainly, including functional planning, hardware design and software development of the household's node in an intelligent community, to realize data collection of water meter, ammeter and gas meter of the home, safety alarm and electric device control; Based on it, a control network of intelligent community has been structured, and developed by LonMaker integration tool. This part has mainly researched Neuron chip technology, Neuron C programming and installing a LonWorks network by LonMaker. Chapter 4 solves the communication problem between the ground floor LonWorks network and upper application software primarily. Based on DDE technology, this chapter realizes the real-time communication between Visual C+ + application program and LNS DDE Server, and easily obtaining the information from devices in a ground floor LonWorks network. The chapter introduces how to implement DDE using C++ classes in detail and provides the corresponding procedure code. Chapter 5 carries on the functional planning to the software platform of the information management system of intelligent community mainly, and divides it into three parts: network monitoring subsystem, information management subsystem and user information inquiry subsystem, to realize the control and management of the devices in the ground floor LonWorks network, informationmanagement of user authority, user information, alarm, pay the fees and the function of inquiring information by users. To the software functional planning of information management of intelligent community, the chapter provides the relevant design of the relation database.With the high-speed development of Internet technology, open and information sharing in an information management become one demand that increases progressively. After connected to Internet, the control networks of intelligent community can make new, valuable services function and even be better than LAN. At the end of this paper, it has a look forward to the Web application of information management system of intelligent community.