Browse > Article

Minute Signal Noise Cancellation System For The Air-pollution Measurement System  

Kim, Young-Jin (Dept. of Electronic Eng., Dong-Eui University)
Lim, Yong-Seok (C Tech.)
Ryu, Geun-Taek (Dept. of Biomedical Eng., Keukdong College)
Bae, Hyeon-Deok (Dept. of Electrical Eng., Chungbuk Nat'l University)
Choi, Hun (Dept. of Electronic Eng., Dong-Eui University)
Publication Information
전자공학회논문지 IE / v.46, no.4, 2009 , pp. 16-24 More about this Journal
Abstract
In this paper, we propose a new noise cancellation system for the NDIR based optical analyzer, that can measure various environmental air-pollution materials (CO, $SO_2$, NOx, etc.) in real-time. The sensed signals are contaminated by the different noise sources that measurement noise with high frequencies and the drift noise with the low frequencies. They can be eliminated by a pre-processing that considering their time-domian properties and by a post-processing that using sub-power ratios in subband structure. In the proposed method, the ore and pose-processing for noise cancelling are useful for hardware implementation of the NDIR based optical analyzer with a precision measuring.
Keywords
Noise cancellation; NDIR analyzer; Subband filtering; Binary tree structured filter banks;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 K. Kaneyasu, K. Otsuka, Y. Setoguchi, S. Sonoda, T. Nakahara, and I. Aso, 'Acarbon dioxide gas sensor based on solid electrolyte for air quality control', Sensors and Actuators B, 66, pp. 56-58, 2000   DOI   ScienceOn
2 김우석, 손덕영, 박영무, 유재석, 이종화, '비분산 적외선 분광법을 이용한 CO2 농도 고속 분석기의 Sampling Module 특성에 관한 실험적 연구', 대한기계학회논문집, B, 제27권, 제3호, pp. 398-405, 2003
3 박태순, 허귀석, 오상협, 우진춘, 이진복, 김광섭, 김용두, 문동민, 김병민, 배현길, 이정순, 김현호, 노중섭, 박중보, 한상봉, 이재용, 최훈, '환경.식품 유해성분 측정보증', 한국표준과학연구원 연구보고서, KRISS/IR-2007-062, 1999
4 최훈, 김현호, 황병한, 임용석, 류근택, 배현덕, 'NDIR 검출기를 이용하는 대기오염 측정시스템을 위한 미세신호 검출 알고리즘,' 전자공학회논문지, 제45권 IE편, 제3호, 27-35쪽, 2008년 9월   과학기술학회마을
5 Richard J. Higgins, Digital Signal Processing in VLSI, Analog Devices, Prentice Hall, Prentice Hal, 1990
6 Alan V. Oppenheim, Ronald W. Schafer, Discrete-time Signal Processing, Prentice-Hall Englewood Cliffs, New Jersey, USA, 1999
7 A. Chambolle, R. A. DeVore, N. Lee, and B. J. Lucier, 'Nonlinear Wavelet Image Processing: Variation Problems, Compression, and Noise Removal Through Wavelet Shrinkage,' IEEE Trans. on Image Proc., vol. 7, no. 3, pp.319-335, 1998   DOI   ScienceOn
8 D. L. Donoho, 'De-noising by Soft Thresholding,'IEEE Trans. on Info. Theory, vol. 41, no. 3, pp613-627, 1995   DOI   ScienceOn
9 S. Mallat, A Wavelet Tour of Signal Processing, Academic Press, 1998
10 S. Mallat, 'A theory for multiresolutional signal decomposition : the wavelet representation,' IEEE Trans. Pattn. Anal. Mach. Intell., vol 11, no. 7, pp. 674-693, July, 1989   DOI   ScienceOn
11 M. Arndt and M. Sauer, 'Spectroscopic carbon dioxide sensor for automotive applications', In Proc. of the IEEE Sensors 2004,Vienna, vol. 1, pp. 252-255, NJ. Oct., 2004
12 S. Mallat and W. L. Hwang,, 'Singularity Detection and Processing with Wavelets,' IEEE Trans. on Info. Theory, vol. 38, no. 2, pp617-643, 1992   DOI   ScienceOn
13 P. P. Vaidyanathan, Multirate System and Filter Banks, Englewood Cliffs, NJ, Prentice-Hall, 1993
14 D. W. Hill and T. Powell, Non-Dispersive Infrared Gas Analysis in Science, Medicine and Industry, Plenum Press, NJ,, 1968
15 S. Haykin, Adaptive Filter theory, 4th Ed. Prentice-Hall, 2002