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System and method for occupancy sensing using adjustable detection and load control profile

  • US 10,534,336 B2
  • Filed: 12/27/2017
  • Issued: 01/14/2020
  • Est. Priority Date: 11/03/2014
  • Status: Active Grant
First Claim
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1. An occupancy sensor, comprising:

  • an occupancy sensing element;

    a photodetector; and

    a processor coupled to the occupancy sensing element and the photodetector, the processor programmed to;

    (i) receive light signals from the photodetector;

    (ii) receive occupancy signals from the occupancy sensing element;

    (iii) place the occupancy sensor into at least one of a plurality of operating modes; and

    (iv) control an associated load based on the selected operating mode and the received occupancy signals;

    wherein the plurality of operating modes includes at least a first operating mode, a second operating mode, and a third operating mode,wherein in the first operating mode, the associated load is not energized regardless of whether the processor receives occupancy signals from the occupancy sensing element;

    wherein the second operating mode is associated with a first predetermined time period that is different than the first operating mode, the processor energizes the associated load for a first amount of time during the first predetermined time period when an occupancy signal from the occupancy sensing element is received; and

    wherein the third operating mode is associated with a second predetermined time period that is different than the first and second operating modes, the processor energizes the associated load for a second amount of time during the second predetermined time period when a received occupancy signal from the occupancy sensing element is received.

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