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Thermostat with occupancy detection via proxy measurements of a proxy sensor

  • US 10,731,885 B2
  • Filed: 04/13/2018
  • Issued: 08/04/2020
  • Est. Priority Date: 04/14/2017
  • Status: Active Grant
First Claim
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1. A controller for controlling an environmental condition of a building space comprising:

  • a proxy sensor configured to measure a proxy value indicating whether an occupant is within the building space;

    an occupancy sensor configured to measure an occupancy value indicating whether the occupant is within the building space, wherein the occupancy sensor is different than the proxy sensor; and

    a processing circuit configured to;

    determine whether the occupant is within the building space based on the occupancy value of the occupancy sensor;

    generate a proxy baseline based on a first proxy value measured via the proxy sensor, the proxy baseline,collects a plurality of proxy values measured via the proxy sensor, wherein the plurality of proxy values include the first proxy value; and

    averages the plurality of proxy values, wherein averaging the plurality of proxy values comprises performing a rolling average on the plurality of proxy values;

    compare a second proxy value measured via the proxy sensor and the proxy baseline; and

    control one or more pieces of building equipment to control the environmental condition of the building space based on a comparison of the second proxy value and the proxy baseline.

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