基于电源载波的两总线智能化气体检测系统  

Two-wire Smart Gas Detecting System Based on Power Carrier

作　　者：何永勃[1] 王化祥[1] 

机构地区：[1]天津大学自动化学院

出　　处：《仪表技术与传感器》2005年第1期23-25,共3页Instrument Technique and Sensor

摘　　要：介绍了一种两总线智能化的气体检测系统的工作原理及设计方法。探测器采用抗中毒型催化燃烧式气体传感器,用红外遥控调节零点和增益。通讯采用直流电源载波方法,信号线与电源线公用,不仅降低了布线成本,而且提高了系统可靠性。Introduced the operating principle and the design method for a novel smart gas detecting system based on two-wire system. The detector employed anti-poisoning catalysis combustion sensor, and its zero and amplification were adjusted by an infrared remote controller. Using the DC power carrier technology, the signal was modulated into the power wire, which can not only reduce the wiring cost, but also improve the system reliability.

关 键 词：气体检测 程控放大器 电源载波 两总线 传感器中毒 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]