World Environmental and Water Resources Congress 2018
Low-Cost Multi-Channel Pressure Measurement Solution with Computer Vision Technology
Publication: World Environmental and Water Resources Congress 2018: Hydraulics and Waterways, Water Distribution Systems Analysis, and Smart Water
ABSTRACT
Piezometer tube is an old but still popular device to measure pressure in open-channels, pipes, and groundwater. The device is fairly cheap besides the labor cost of reading the liquid level in it. In order to reduce the labor cost, a new solution with computer vision technology is put forward. In our experiment, a camera is used to monitor several tubes at the same time and the liquid levels are read by an image processing algorithm afterwards. The image processing algorithm is based on pattern recognition. It is robust enough that no special lighting system is needed. The error of the water level is corrected with the relative locations of the pressure tubes and the camera. The whole system is tested with 60 piezometer tubes. The results show that the liquid levels read by the camera are as accurate as those read by naked eyes. Moreover, the performance of the system in weak light is tested and discussed. As a result, the pressure measurement solution is low-cost, portable, accurate, and easy to expend.
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REFERENCES
Bernoulli, D. (1738). Hydrodynamica, sive de viribus et motibus fluidorum commentarii.
Bouguet, J.-Y. (2015). “Camera Calibration Toolbox for Matlab.” Computational Vision at the California Institute of Technology, <http://www.vision.caltech.edu/bouguetj/calib_doc/> (Jan. 3, 2018).
Eppel, S., and Kachman, T. (2014). “Computer vision-based recognition of liquid surfaces and phase boundaries in transparent vessels, with emphasis on chemistry applications.” 1–36.
Pitot, H. (1732). “Description d’une machine pour mesurer la vitesse des eaux courantes et le sillage des vaisseaux.” Histoire de l’Académie royale des sciences avec les mémoires de mathématique et de physique tirés des registres de cette Académie, 363–376.
Venturi, G. B. (1797). Récherches Experimentales sur le Principe de la Communication Laterale du Mouvement dans les Fluides appliqué a l’Explication de Differens Phenomènes Hydrauliques.
YU, Q., WANG, J., HE, M., YIN, L., and HUANG, Y. (2012). “Design of flood discharge and energy dissipation for Yangfanggou hydropower station.” Water Resources & Hydropower of Northeast China (in Chinese), (1), 12–15, 71.
Information & Authors
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Published In
World Environmental and Water Resources Congress 2018: Hydraulics and Waterways, Water Distribution Systems Analysis, and Smart Water
Pages: 351 - 356
Editor: Sri Kamojjala, Las Vegas Valley Water District
ISBN (Online): 978-0-7844-8142-4
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: May 31, 2018
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