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Minute Signal Detection Algorithm for Air-pollution Measurement System with The NDIR Detector  

Choi, Hun (Dept. of Electronic Eng., Dong-Eui University)
Kim, Hyon-Ho (Korea Research Institute of Standards and Science)
Whang, Byoung-Han (KNTech Co., Ltd.)
Lim, Yong-Seok (CTech)
Ryu, Geun-Taek (Department of Biomedical Engineering, Keukdong College)
Bae, Hyeon-Deok (Dept. of Electrical Eng., Chungbuk Nat'l. University)
Publication Information
전자공학회논문지 IE / v.45, no.3, 2008 , pp. 27-35 More about this Journal
Abstract
In this paper, we propose a minute signal detection algorithm for a development of optical analyzer, using the non-dispersive infrared method with multi gas filter correlation wheel, that can measure various environmental air-pollution materials (CO, SO2, NOx, etc.) in real-time. The MCT(mercury cadmium telluride) sensor can detect minute signals those show and absorption characteristic of each environmental pollution materials. In the proposed method, a corresponding data of each environmental pollution materials can be separated by an external trigger and threshold values in the measured continuous signals.
Keywords
NDIR Detector; Milti GFC Wheel; Signal Detection Alrotithm; Air-pollution;
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