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Motion sensing system with adaptive timing for controlling lighting fixtures

DC
  • US 5,699,243 A
  • Filed: 03/29/1995
  • Issued: 12/16/1997
  • Est. Priority Date: 02/02/1995
  • Status: Expired due to Term
First Claim
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1. A method for controlling a relay connected between a power source and a load to operate the load for an occupant of an area in which the load operates, comprising the steps of:

  • sensing the presence of at least one occupant in said area;

    storing data relating to a plurality of instances of sensing at least one occupant in said area;

    switching said relay to a closed position to energize said load via said power source when the presence of an occupant is detected in said area;

    determining the duration of a period of time during which said relay is closed before said relay is automatically opened using said stored data;

    storing a parameter in a memory device corresponding to said period of time; and

    opening said relay after expiration of said period of time.

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