US 2020/0264244 A1 · DOOR POSITION SENSING

Abstract

An exemplary method relates to determining an open/closed position of a door. The method generally involves generating, by a multi-axis magnetometer mounted to the door, a plurality of signals relating a magnetic field having a net magnetic flux point, and generating, by a controller and based on the plurality of signals, a current incidence angle defined between the multi-axis magnetometer and the net magnetic flux point. The method further includes comparing the current incidence angle to a known incidence angle, wherein the known incidence angle is defined between the multi-axis magnetometer and the net magnetic flux point when the door is in a known position. The method further includes determining the open/closed position of the door based on the comparison of the current incidence angle to the known incidence angle.

Claims20

Dependent claims

A method of determining an open/closed position of a door, the method comprising:

generating, by a multi-axis magnetometer mounted to the door, a plurality of signals relating to a magnetic field having a net magnetic flux point;
generating, by a controller and based on the plurality of signals, a current incidence angle defined between the multi-axis magnetometer and the net magnetic flux point;
comparing the current incidence angle to a known incidence angle, wherein the known incidence angle is defined between the multi-axis magnetometer and the net magnetic flux point when the door is in a known position;
and
determining the open/closed position of the door based on the comparing of the current incidence angle to the known incidence angle.

2 more elements

A method of operating an access control device mounted to a door of a closure assembly comprising the door, a doorframe, and a magnetic field generator mounted to the doorframe, and wherein the magnetic field generator generates a magnetic field having a net magnetic flux point, wherein the method comprises:

generating, by a multi-axis magnetometer of the access control device, a plurality of signals, wherein each signal is indicative of a relative position of the multi-axis magnetometer and the net magnetic flux point along a corresponding and respective axis;
generating, by a controller of the access control device and based on the plurality of signals, a first current incidence angle defined between the multi-axis magnetometer and the net magnetic flux point;
and
determining, by the controller and based on the first current incidence angle, a condition of the closure assembly.

1 more element

An access control device configured for mounting to a door of a closure assembly, the access control device comprising:

a multi-axis magnetometer configured to generate a first signal indicative of a position of a net magnetic flux point along a first axis and a second signal indicative of a position of the net magnetic flux point along a second axis, wherein the first axis and the second axis are arranged coplanar to one another along a reference plane;
a controller in communication with the multi-axis magnetometer;
and
memory in communication with the controller, the memory comprising instructions that, when executed by the controller, cause the controller to:
generate a current incidence angle based on the first signal and the second signal;
compare the current incidence angle to a known incidence angle, the known incidence angle corresponding to a known condition of the closure assembly;
and
determine a current condition of the closure assembly based on the comparison of the current incidence angle and the known incidence angle.

5 more elements

Dependencies are inferred from the claim text.

Door position sensing

Life of this patent

Door position sensing

Life of this patent

Abstract

Claims20