Proceedings of the 5th International Conference on Innovation in Education, Science, and Culture, ICIESC 2023, 24 October 2023, Medan, Indonesia

Research Article

Real-time Liquid Level Measurement using A Plastic Optical Fiber (POF)

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  • @INPROCEEDINGS{10.4108/eai.24-10-2023.2342136,
        author={Bakti Dwi  Waluyo and Joni Safrin Rambey and Ressy Dwitias Sari},
        title={Real-time Liquid Level Measurement using A Plastic  Optical Fiber (POF)},
        proceedings={Proceedings of the 5th International Conference on Innovation in Education, Science, and Culture, ICIESC 2023, 24 October 2023, Medan, Indonesia},
        publisher={EAI},
        proceedings_a={ICIESC},
        year={2024},
        month={1},
        keywords={real-time liquid level measurement plastic optical fiber sensor u-bent fiber  optic probe},
        doi={10.4108/eai.24-10-2023.2342136}
    }
    
  • Bakti Dwi Waluyo
    Joni Safrin Rambey
    Ressy Dwitias Sari
    Year: 2024
    Real-time Liquid Level Measurement using A Plastic Optical Fiber (POF)
    ICIESC
    EAI
    DOI: 10.4108/eai.24-10-2023.2342136
Bakti Dwi Waluyo1,*, Joni Safrin Rambey1, Ressy Dwitias Sari1
  • 1: Department of Electrical Engineering Education, Universitas Negeri Medan, Medan, Indonesia
*Contact email: bakti_dw@unimed.ac.id

Abstract

This research presents a low-cost sensor for measuring liquid levels using plastic optical fibers (POF). The sensor reduces the scattering-based optical losses in the fiber, which increase linearly with the liquid height. A U-bent fiber probe and photodetector are used to detect the change in optical intensity. The U-bent probe serves as a test probe for measuring the liquid level. The voltage response difference of the photodetector provides liquid level measurement. This study demonstrates the sensor's responsiveness to liquid level fluctuations above 55 cm at varying temperatures. Sensitivity levels of 1.4 and 3.3 mV/mm were achieved for water level fluctuations below and above 45 cm, respectively. Furthermore, the sensor demonstrated consistently stable responsiveness over multiple cycles.