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MEMS - Electrical Power Sensing Inexpensive MEMS electric power sensors integrated with low power wireless radios will monitor end-user loads in homes and businesses, equipping electricity customers to respond to Demand Response events and ultimately facilitating remote management of loads. A novel design for a passive, proximity-based electric current sensor uses a permanent magnet mounted on the end of a piezoelectric cantilever. The magnet is subjected to a sinusoidal force due to the AC magnetic field surrounding the conductor, and the piezoelectric element transduces this force into a measurable voltage signal. |
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