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Self-Power Digital Pipe Flow Metering
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DOI：10.1109/IS3C.2014.25.png)
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摘要
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The objective of this study is to develop a digital and battery-free smart pipe-flow-meter. Three major technologies made this possible: a cog-resistance-free generator with high efficiency; an effective methodology to extract its energy and a low power consumption metering system, for a new generation of flowmeters. In the system, a tiny portion of the kinetic energy from the fluid/air flow was extracted, stored in a capacitor and used. The resistance to the flow was negligible because of the very low power consumption as well as the coreless generator technology. Feasibility was demonstrated through the experiments: for air flowing in an 11mm pipe, 18 seconds of energy harvesting at 10 revolution-per-second (RPS) turbine speed, generated enough power for the flowmeter to operate for 720 seconds at 20 RPS, without battery or any external power.
Keyword:
Flow-meter
Leakage control
Self-powered flowmeter
Autonomous flowmeter
Smart metering system
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