System for monitoring operation status of electric machine and mobile phone therefor and server-based system using the same
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United States of America Patent
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Jun 2, 2020
Grant Date -
Jun 22, 2017
app pub date -
Mar 8, 2017
filing date -
Sep 9, 2014
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Abstract
A system configured for monitoring the operation status of an electric machine; a mobile phone therefor and server-based system using the same. The system includes a portable unit, adapted for free movement around the electric machine; an airborne acoustics sensor, adapted for measuring acoustic data produced by the electric machine at a first position in a path of the free movement; a magnetic field sensor, adapted for measuring magnetic field data produced by the electric machine at a second position in the path of the free movement; and a processing unit, adapted for calculating the operation status of the electric machine based on the acoustic data from the airborne acoustics sensor and the magnetic field data from the magnetic field sensor; wherein: the airborne acoustics sensor and the magnetic field sensor are integrated with the portable unit.
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