Door lock including sensor
First Claim
Patent Images
1. A door assembly comprising:
- a door panel connected to a door frame and pivotable about a pivot axis;
a door latch coupled to the door panel and operable to selectively inhibit movement of the door from a closed position to an open position;
a sensor coupled to the door latch and operable to detect acceleration of the door and output acceleration data corresponding to the acceleration of the door panel in a first direction; and
a controller coupled to the door latch and the sensor, the controller operable to analyze a change in the acceleration data during movement from the open position to the closed position to determine the cause of the acceleration, wherein the sensor is operable to measure a first acceleration produced by a centripetal force and a second acceleration, and wherein the controller determines the cause of the second acceleration at least partially in response to a measurement of the first acceleration.
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Accused Products
Abstract
A door assembly includes a door panel connected to a door frame and pivotable about a pivot axis, a door latch coupled to the door panel and operable to selectively inhibit movement of the door from a closed position to an open position, and a sensor coupled to the door latch and operable to detect acceleration of the door and output acceleration data corresponding to the acceleration of the door panel in a first direction. A controller is coupled to the door latch and the sensor. The controller is operable to analyze the acceleration data to determine the cause of the acceleration.
18 Citations
20 Claims
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1. A door assembly comprising:
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a door panel connected to a door frame and pivotable about a pivot axis; a door latch coupled to the door panel and operable to selectively inhibit movement of the door from a closed position to an open position; a sensor coupled to the door latch and operable to detect acceleration of the door and output acceleration data corresponding to the acceleration of the door panel in a first direction; and a controller coupled to the door latch and the sensor, the controller operable to analyze a change in the acceleration data during movement from the open position to the closed position to determine the cause of the acceleration, wherein the sensor is operable to measure a first acceleration produced by a centripetal force and a second acceleration, and wherein the controller determines the cause of the second acceleration at least partially in response to a measurement of the first acceleration. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A door assembly comprising:
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a door panel connected to a door frame and pivotable about a pivot axis; a door latch coupled to the door panel and operable to selectively inhibit movement of the door panel from a closed position to an open position; a first sensor coupled to the door latch and operable to detect a first acceleration of the door panel produced by a centripetal force during movement from the open position to the closed position; a second sensor coupled to the door latch and operable to detect a second acceleration of the door during movement from the open position to the closed position; and a controller coupled to the door latch, the first sensor, and the second sensor, the controller operable to determine if the second acceleration is a result of a normal door closure based at least partially on a measurement taken by the first sensor immediately preceding the second acceleration. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of determining the cause of a first acceleration at a door comprising:
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supporting the door for pivotal movement about a hinge axis; coupling a door latch to the door, the door latch operable to selectively inhibit movement of the door from a closed position to an open position; sensing accelerations applied to the door during movement from the open position to the closed position; sensing angular movement of the door about the hinge axis during movement from the open position to the closed position; and determining the cause of the first acceleration during the closing of the door by analyzing a magnitude of the first acceleration in combination with a magnitude of the angular movement measured immediately prior to the first acceleration. - View Dependent Claims (14, 15, 16)
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17. A door assembly comprising:
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a door panel connected to a door frame and pivotable about a pivot axis; a door latch coupled to the door panel and operable to selectively inhibit movement of the door panel from a closed position to an open position; a sensor coupled to the door latch and operable to detect angular movement of the door panel about the pivot axis, and to detect an acceleration of the door panel during angular movement from the open position to the closed position; and a controller coupled to the door latch and the sensor, the controller operable to determine if the acceleration measured by the sensor is a result of a normal door closure based at least partially on a measurement taken by the sensor of the angular movement of the door panel immediately preceding the acceleration. - View Dependent Claims (18, 19, 20)
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Specification