【作者】 许军峰；

【导师】 史燕；

【作者基本信息】 西南交通大学 ， 计算机应用技术， 2003， 硕士

【摘要】 随着信息时代来临，智能建筑进入高速发展时期，智能小区防盗报警系统作为小区智能化系统中的子系统之一，同样承载着智能建筑所面临的挑战与机遇。针对居住的环境不同，用户对于防盗报警系统的要求也不是一成不变的。智能小区防盗报警系统既要易于使用、安装和维护，又要有利于扩展和升级，还要考虑与其他系统的集成和信息共享，关注计算机、通信技术的发展对系统带来的影响。 传统的智能小区防盗报警系统是基于电话线的联网报警系统，响应时间慢、使用和维护成本高、安全和稳定性依赖于电话网的安全和稳定性，系统的独立性较差。总线制报警系统通过小区内的局域总线作为物理网络，彻底摆脱电话线制的局限，有开放性、独立性、扩展性、高效性和经济性等特点。 本文设计并实现了一个能与Internet互连的，基于RS485总线制联网的智能小区防盗报警系统，介绍了系统的组成、系统结构，分析了现场总线的技术特点。通过分析比较几种方案，系统采用RS485现场总线的连接方案，分配了上位机、下位机的功能，确定了上位机与下位机的通信协议，并讨论了系统与Internet的连接模式。详述了上位机软件的功能、模块及数据的组织，描述了主程序流程和与下位机通信的流程。介绍了软件的编程实现技术，简单说明了提高系统可靠性的措施。更多还原

【Abstract】 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. With customers’ demands changing quickly, the alarm system design should pay attention to the influences brought about by the development of computer and communication technology. An excellent such system should be easily applicable, maintainable and updatable. Further more, it should have the ability to be integrated and share information with other systems.Traditional Intelligent Residence Guard Against Theft And Alarm System is an alarm system on the basis of telephone lines, which has a long response time, high application and maintenance cost and low independence with the security and stability level depending on that of telephone networks. The fieldbus alarm system, which is free from the restriction of telephone line with the local fieldbus working as the physical network, is open, independent, updatable, powerful and economical.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 fieldbus are analyzed. By comparing several solutions, RS485 locale connection solution is adopted to assign the functions of Upper Layer 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.更多还原