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Door lock sensor and alarm

  • US 10,169,942 B2
  • Filed: 12/05/2017
  • Issued: 01/01/2019
  • Est. Priority Date: 05/23/2012
  • Status: Active Grant
First Claim
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1. A system for generating an alarm associated with acceleration of a door, the system comprising:

  • a door lock mechanism installed with a door panel that includes a lock and permits entry through the door based on a status of the lock;

    at least one accelerometer coupled to the door lock mechanism and configured to detect motion of the door; and

    a controller configured to;

    determine whether an initial acceleration detected by the at least one accelerometer during a first period of time of the door being in motion is less than an acceleration threshold of the door, wherein the acceleration threshold is an acceleration that when exceeded by the door is indicative of a forced entry; and

    maintain the alarm associated with the door lock mechanism in a deactivated state when the initial acceleration of the door detected by the at least one accelerometer is less than the acceleration threshold.

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