Sensor malfunction detection

  • US 10,818,105 B1
  • Filed: 01/18/2017
  • Issued: 10/27/2020
  • Est. Priority Date: 01/22/2016
  • Status: Active Grant
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First Claim
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1. A computer-implemented method for detecting sensor malfunctions in a smart home, comprising:

  • receiving, from a plurality of sensors of the smart home, sensor data including a plurality of signals from the plurality of sensors during operation of the smart home;

    analyzing, by one or more processors, the sensor data to detect an event impacting the smart home;

    selecting, by the one or more processors, a first sensor from one or more higher-level sensors based upon a hierarchy of sensors in order to test the one or more higher-level sensors for malfunctioning before lower-level sensors;

    obtaining, by one or more processors, a first set of signals of the plurality of signals from the first sensor of the plurality of sensors;

    determining, by one or more processors, a first sensor range indicative of a range of signal values associated with proper functioning of the first sensor, wherein the first sensor range is based upon specifications for the first sensor, historical data from the first sensor, or estimates of what the signal values should be for the first sensor;

    determining, by one or more processors, that the first sensor is malfunctioning when at least one signal in the first set of signals associated with the first sensors is outside the first sensor range; and

    performing, by one or more processors, an action in response to determining that the first sensor is malfunctioning.

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