Compact, Low-Cost Electric Field Mill
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United States of America Patent
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Oct 22, 2020
app pub date -
Apr 19, 2020
filing date -
Apr 18, 2019
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Abstract
An electric field mill (EFM) incorporates a novel rotor and shaft grounding mechanism providing a low-impedance path to ground via a bearing packed with electrically conductive grease. A removable bearing washer allows for servicing. The EFM includes a data processing scheme built around a peak detection algorithm and moving much of the signal processing to digital processing. A GPS disciplined sampling clock and cellular connectivity allow for use and maintenance of arrays of widely scattered EFMs.
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