单总线烟温复合式火灾监控系统

An Implementation Of Complex Fire Detection For Smoke And Heat Using 1-Wire Bus

介绍一种基于单总线的烟温复合式火灾监测系统,探测器部分由反射式光电感烟单元和数字式感温单元组成,所有探测器通过单总线专用芯片连到一根总线上,再通过单总线与USB的协议适配器与PC主控制器相连。DS2438作为探测器核心器件同步完成烟雾浓度参数的模数转换和现场温度的数字化测量,并按照单总线协议实现与主机的通信,软件上采用多传感信息融合技术和人工智能的处理方法,对参集到的信息进行综合判断,能够准确有效地判断火灾的发生。

The system of complex fire detection for smoke and temperature based 1-Wire bus is introduced in this paper. The detector includes photoelectric smoke sensor and digital temperature measuring part. All detectors are connected to one and the same twisted wire named 1-Wire bus, and communicate with the master PC computer through USB ＆ 1-wire adapter. As a main circuit chip of the detector, DS2438 converts the analog concentration signals of smoke to digital data and completes digital temperature measurement synchronistically. It communicates with master PC according to the 1-wire protocol. The artificial intelligence and the technology of multisensor information fusion have been adopted in software-programmed process to estimate the information all round so as to judge the fire exactly based multisensor.