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Proceedings Paper

Fiber-capacitive drop sensor for application in liquid identification
Author(s): Qing Song; Jiayong Huang; Chunsong Zhang; Jing Liu; Di Wu
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Paper Abstract

The modulated coupled infrared light is injected into the liquid drop by a source fiber positioned in the drop head and is collected by a detector fiber on the opposite side after various reflection, refraction and absorption of the optical signal inside the drop. Capacitive drop sensor uses the drop head as one of its plate and a cylindrical ring plate, which surrounds the drop head and the space occupied by the formed drop, as another. Based on the capacitance changes, the instant drop volume can be obtained during its growth. Fiber-capacitive drop sensor will be introduced concretely in this paper, including its working principle, mathematical model, and the structure design of drop head.

Paper Details

Date Published: 23 November 2009
PDF: 10 pages
Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 750812 (23 November 2009); doi: 10.1117/12.837879
Show Author Affiliations
Qing Song, Beijing Univ. of Posts and Telecommunications (China)
Jiayong Huang, Beijing Univ. of Posts and Telecommunications (China)
Chunsong Zhang, Beijing Univ. of Posts and Telecommunications (China)
Jing Liu, Beijing Univ. of Posts and Telecommunications (China)
Di Wu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 7508:
2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
YanBiao Liao; Anbo Wang; Tingyun Wang; Yukihiro Ishii, Editor(s)

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