Design Of The Intelligent Residence Security Guard Against Theft And Alarm System Connected With Internet

With the information era coming near, the intellectual buildings begin to develop at very fast speed. As a sub-system of the intellectual system, the Intelligent Residence Security Guard against theft and alarm System is faced with the same challenges and opportunities as the intellectual buildings do. An excellent such system should be easily applicable, maintainable and updateable. Further more, it should have the ability to be integrated and share information with other systems. This paper designs and implements an Intelligent Residence Guard against theft and alarm System, a master-slavery RS485 network connected with Internet. The structure and the constitution of the system and the structure of computer networks are introduced, and the technical characteristics of the locale field bus are analyzed. By comparing several solutions, RS485 locale connection solution is adopted to assign the functions of Upper Laver Computer and microcomputer-based lower control and to determine the protocols used by Upper Layer Computer and microcomputer-based lower control, and the connection mode with Internet are discussed. The software function, modules and data organization of the Upper Layer Computer are explained,the process of main program and that of the communication with Upper Layer Computer are narrated. The software programming and the measures to enhance the system stability are introduced.