气敏法动态浓度测量中的预测技术探讨  

Research of Intelligent Forecast Technique in Measuring ofDynamic Concentration with Gas-Sensing Method

作　　者：顾文照[1] 易登录[1] 梁敏[1] 王涛[2] 

机构地区：[1]中国药科大学,南京210009 [2]江苏无线电厂,南京210018

出　　处：《传感技术学报》1995年第2期33-38,共6页Chinese Journal of Sensors and Actuators

摘　　要：用实验测量了气敏传感器(MQ211型)在气体浓度阶跃作用下的响应和恢复特性,发现它们均可用超越函数模型近似.以此为基础,建立了气敏法动态测量中的智能预测技术,结果与实验基本一致,从而解决了气敏法测探中的滞后现象.研究中还发现并建立了快速测定气敏传感器响应时间和恢复时间的新方法.The response and restoring characteristics of gas sensors (model MQ211 ) werestudied in effect of step change of gas concentration,and it was found that they can be ap-proximated with transcendental function model. On this basis, intelligent forecast techniquein gas-sensing dynamical measurement is established,and the result corresponds to the ex-periment on the whole. Therefore, the hysteresis phenomenon in gas-sensing measurementand control disappeared. The new method of fast measuring response time and restoring timeof gas sensors was also found and established in the research.

关 键 词：气敏传感器 气敏法 测量 动态浓度 预测 

分 类 号：TH83[机械工程—仪器科学与技术]