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Door and window contact systems and methods that include time of flight sensors

  • US 9,576,449 B2
  • Filed: 06/03/2015
  • Issued: 02/21/2017
  • Est. Priority Date: 06/03/2015
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a time of flight sensor for mounting in or on a first portion of a window unit or a door unit; and

    a microcontroller unit in communication with the time of flight sensor,wherein the time of flight sensor measures a time for a signal to travel from the time of flight sensor to a reflective surface included in or on a second portion of the window unit or the door unit and back to the time of flight sensor,wherein the time of flight sensor transmits the time to the microcontroller unit, andwherein the microcontroller unit uses the time to make a security determination.

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