Title :
Improvement of the dynamic characteristics on catalytic sensor
Author :
Tong, Minming ; Niu, Mu ; Tong, Ziyuan ; Liu, Xiaowen ; Dai, Xinlian
Author_Institution :
Coll. of Inf. & Electr. Eng., China Univ. of Min. & Technol., Xuzhou, China
Abstract :
The thermostatic methane detection with catalytic sensor is a kind of new detection technique, which improves dynamic characteristic by keeping the catalytic sensor in a constant temperature with a closed loop control system. The dynamic correction link was designed on the basis of analyzing the dynamic characteristics of thermostatic detection and adjusting the system parameters. The test showed that the dynamic characteristics of the methane detection and the dynamic response were improved (the response time from 18s to 5s). The high-speed response is very helpful to monitor the sudden change of methane in mine.
Keywords :
chemical sensors; closed loop systems; catalytic sensor; closed loop control system; dynamic correction link; thermostatic methane detection; Circuits; Control systems; Delay effects; Monitoring; Resistance heating; Sensor phenomena and characterization; Sensor systems; Temperature sensors; Thermal sensors; Transfer functions; dynamic analysis; methane detection; response time;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274414
