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Proceedings Paper

Subsection-filtering method applied in optoelectronic signal processing of the liquid drop analyzer
Author(s): Jia-yong Huang; Qing Song; Di Wu; Jing Liu; Chun-song Zhang
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Paper Abstract

Liquid drop fingerprint can be obtained through fiber-capacitive drop analysis technology as the fiber signal changes with the drop volume which can be represented by the capacitive signal during the drop growth. However, if the fiber or capacitive signals are filtered by the normal low-pass filter method, the fingerprint would be distorted because of the capacitive signal's saw-tooth style and fiber signal's periodically abrupt property. In the paper the subsection-filtering method is explored and analyzed, in which firstly separates the signals according to drop growth period and then filters every subsection respectively. Experiments improves that it is an effective way to solve the signal distortion problem, which usually happens when filters the fiber or capacitive signal during the signal mutation period.

Paper Details

Date Published: 22 July 2010
PDF: 7 pages
Proc. SPIE 7749, 2010 International Conference on Display and Photonics, 77490K (22 July 2010); doi: 10.1117/12.870458
Show Author Affiliations
Jia-yong Huang, Beijing Univ. of Posts and Telecommunications (China)
Qing Song, Beijing Univ. of Posts and Telecommunications (China)
Di Wu, Beijing Univ. of Posts and Telecommunications (China)
Jing Liu, Beijing Univ. of Posts and Telecommunications (China)
Chun-song Zhang, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 7749:
2010 International Conference on Display and Photonics

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