Detection of water leaks in supply pipes using continuous wave sensor operating at 2.45 GHz |
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| Authors: | Matthaios Bimpas Angelos Amditis Nikolaos Uzunoglu |
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| Institution: | 1. University of Salento, Department of Engineering for Innovation, Complesso Ecotekne, via Monteroni, 73100 Lecce, Italy;2. Polytechnic of Bari, Department of Electric and Information Engineering, via E. Orabona 4, 70125 Bari, Italy;1. Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;2. Beijing Municipal Institute of Labour Protection, Beijing 10005, China;3. Environment & Ground Engineering, UK & Ireland, AECOM, London SW19 4DR, UK;4. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | An innovative sensor technique has been developed to detect water leaks in supply pipes, especially in cases where the existing prevailing methods do not offer reliable solution, such as in PVC pipelines or for minor leaks. The presented system uses a Continuous Wave (CW) Doppler sensing unit operating at 2.45 GHz, consisting of a low power transmitter, a homodyne receiver and a digital signal processing unit. The operation principle is the detection of the Doppler frequency shift of the reflected electromagnetic wave by slightly moving water that leaks out of a pipe. A first prototype has already been developed and tested in test sites as well as in real water leaking conditions. The system has additionally been compared to the commercially available water leaking methods, verifying its reliability and accuracy in the detection of water leaks. |
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