Research about a High-Sensitivity Automatic Liquid Manometer

Xiang Jun Li; Wei Wang; Zhan Jun Ma

doi:10.4028/www.scientific.net/AMM.241-244.186

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 241-244Research about a High-Sensitivity Automatic Liquid...

Research about a High-Sensitivity Automatic Liquid Manometer

Abstract:

An automatic liquid manometer which operates on the basis of a position-detecting system is described. A slanting laser beam is directed to the meniscus of liquid in a glass tube manometer without a float and is reflected by the meniscus. The reflected spotlight is focused on a position-sensitive detector (PSD) through a lens. The application of external pressure to the manometer causes the position of the meniscus to change, and the pressure can be gotten indirectly by this position. The relationship of the output of PSD to the displacement of meniscus was investigated, and the fuzzy control rules were determined to make the meniscus back to its original position fast and stable. The system has been tested with good results.

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Periodical:

Applied Mechanics and Materials (Volumes 241-244)

Pages:

186-189

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.241-244.186

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Online since:

December 2012

Authors:

Xiang Jun Li, Wei Wang, Zhan Jun Ma

Keywords:

Automatic Liquid Manometer, Fuzzy Control, Meniscus, Position-Sensitive Detector

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