2014年CAN总线在智能漏电火灾报警系统中的运用.docVIP

摘要 火灾会带来大量的危害，如财产的损失、人员的伤亡。如何有效预防火灾也就成为设计火灾报警系统方案重点考虑的问题。近年来，火灾人员伤亡呈现上升态势，特别是群死群伤恶性火灾时有发生。智能型火灾报警控制系统是一个集信号检测、传输、和控制于一体的控制系统，代表了当今火灾报警系统的发展方向。随着科学技术的迅猛发展以及经济的迅速增长，市场上迫切需要一种容量大、性能优越、可靠性高、便于安装、使用和维修的智能型火灾报警控制系统。 CAN总线是德国BOSCH公司从80年代初为解决现代汽车中众多的控制与测试仪器之间的数据交换而开发的一种串行数据通信协议，它是一种多主总线，通信介质可以是双绞线、同轴电缆或光导纤维。通信速率可达1MBPS。 与其它现场总线比较而言,CAN总线是具有通信速率高、容易实现、且性价比高等诸多特点的一种已形成国际标准的现场总线。这些也是目前 CAN总线应用于众多领域,具有强劲的市场竞争力的重要原因。 关键字：火灾报警系统 CAN总线 Abstract Fire can bring a lot of damage, such as property loss, personnel casualties. How to effectively prevent fire also become design fire alarm system solutions of the problems the key consideration. In recent years, showed a rising trend fire casualties, especially of dead, injured, malignant fires occur frequently. Intelligent fire alarm control system is a collection of signal detection, transmission, and control in one of the control system, which represents the current fire alarm system development direction. Along with the rapid development of scientific technology and rapid economic growth, on the market in desperate need of a large capacity, superior performance, high reliability, easy installation, use and maintenance of the intelligent fire alarm control system. The CAN bus is Germany BOSCH company from in the early 1980s to solve many of the modern car control and test instrument of data exchange and the development of a serial data communication protocol, it is a kind of many main bus, communication medium CAN be twisted pair, coaxial cable or optical fibers. Communication rate can reach 1MBPS. Compared with other fieldbus with communication, the CAN bus is high rate and easy to implement, and high performance-to-price and a few characteristics has formed international standard fieldbus. These are also currently applied to many fields CAN bus with a strong market competitiveness, the important reasons. Key words：fire alarm system；CAN bus 目 录 1 引言 1 2 火灾漏电报警系统的总体介绍 2 2.1 系统的构成 2 2.2 系统的工作原理 2 2.3 系统主要功能 3 3 CAN总线的概述 5 3.1 CAN