两总线智能化气体检测系统  

Smart Gas Detecting System Based on Two-Wire System

作　　者：何永勃[1] 王化祥[1] 郝魁红[1] 

机构地区：[1]天津大学自动化学院

出　　处：《传感技术学报》2004年第1期58-61,共4页Chinese Journal of Sensors and Actuators

摘　　要：根据提供的两总线智能化的气体检测系统的工作原理及设计方法 ,所制成的探测器采用催化燃烧式传感器的特点 :是以棒调节零点和增益 ;通讯采用直流电源载波方法 ;信号线与电源线公用。由此 ,不仅降低了布线成本 ,而且提高了系统可靠性。This paper introduces the operating principle and the design method for a novel smart gas detecting system based on two-wire system. The detector employs catalysis combustion sensor, and its zero and amplification are adjusted by a magnetic-iron. Using the DC power carrier technology, the signal is modulated into the power wire, which can reduce the wiring cost and improve the system reliability.

关 键 词：气体检测 电源载波 两总线 催化燃烧式传感器 程控放大器 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] TP212[自动化与计算机技术—控制科学与工程]