Fiber-optic liquid-level continuous gauge |
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| Affiliation: | 1. Departamento de Óptica, Campus Universitario de Fuentenueva s/n, Universidad de Granada, Edificio Mecenas, Granada 18071, Spain;2. Philips, Sistemas Médicos, Jaén 23007, Spain;3. Departamento de Electrónica, Avd. Madrid 35, Universidad de Jaén, Jaén 23071, Spain;1. School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, China;2. The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE), Beijing, 100191, China;1. School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, 100191, China;2. Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Beihang University, Beijing, 100191, China;3. Shanghai Electro-mechanical Engineering Institute, Shanghai, 201109, China;4. School of Electrical and Electronic Engineering, University of Manchester, Manchester, M13 9PL, UK;5. School of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China;6. Manchester Advanced Intelligent Equipment Research and Innovation Centre Ltd (MAIERIC Ltd), Manchester, UK;1. Research Institute for Geo-Hydrological Protection, National Research Council, I-35127 Padova, Italy;2. Department of Information Engineering, University of Padova, I-35131 Padova, Italy;3. IIUSE, Southeast University, Nanjing, China;1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;2. Nondestructive Detection and Monitoring Technology for High Speed Transportation Facilities, Key Laboratory of Ministry of Industry and Information Technology, China;3. West Pomeranian University of Technology, Poland;4. Nantong Sizhen Electronic Technology Co., LTD, China |
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| Abstract: | An intensity-based fiber-optic liquid-level gauge for continuous measurement is described. The sensing principle is based on the total internal reflection of light within the fiber optic, and for this, a measurement is made of the power attenuation which occurs in the fiber optic immersed in the liquid tank when the liquid level varies. The light from a LED is modulated before being directed into the fiber to minimize measurement errors. The device contains an alarm programmable to signal any liquid level in the tank (high or low), and data can be sent via Internet in real time to a distant point. |
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