US 10,169,942 B2 · Door lock sensor and alarm

Abstract

A door lock mechanism is disclosed that includes door lock and alarm features. The mechanism includes a controller and a sensor useful to detect motions that are representative of attempted access through a door to which the door lock mechanism is attached. The controller can set an alarm condition if a measured motion, such as a measured acceleration, meet and/or exceeds a threshold. If an appropriate access control credential is provided through a user device then the alarm condition may not be set by the controller. The door lock mechanism can be coupled to a remote station via a communications link if needed, such as a radio frequency link. The remote station can additionally be in communication with the door lock mechanism via a network. The remote station can be used to send and receive messages regarding door lock mechanism status, configuration, etc.

Claims20

Dependent claims

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.

4 more elements

Dependencies are inferred from the claim text.

Door lock sensor and alarm

Life of this patent

Door lock sensor and alarm

Life of this patent

Abstract

Claims20