Door opener control with adaptive limits and method therefor
First Claim
1. An electronic control for a garage door opener having adjustable open and closed position limits and adjustable opening and closing obstruction force sensitivity limits, the control having a learn mode for setting the limits and an operate mode for door opening and closing;
- the control comprising;
manually controlled learn switch means for entering a learn mode;
manually controlled operate switch means for entering an operate mode to control door movement;
means responsive to the learn switch means for establishing limits of the position and sensitivity;
means responsive to the operate switch means for operating the control within the established limits; and
the means for operating the control including limit enhancing means for establishing new limits while in the operate mode.
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Accused Products
Abstract
A garage door operator has a microcomputer based control which is programmed to measure door position from full open position by counting motor revolutions and to determine motor speed and deceleration for each revolution. The program learns the open and closed position limits as well as force sensitivity limits for up and down operation with minimal user input. During normal door operation the closed limit and the sensitivity limits are adaptively adjusted to accommodate changes in conditions. The lowest up and down motor speeds in each operation are stored for comparison with motor speeds in the next like operation for obstruction detection. Motor deceleration is also monitored for obstruction detection. For a more sensitive obstruction detection during closing, the motor speed is mapped for each revolution for the last several inches of closing. The map is stored after each successful closing operation and the corresponding speeds in the next closing are compared point-by point with the mapped speeds to detect slow down due to touching an obstruction.
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Citations
22 Claims
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1. An electronic control for a garage door opener having adjustable open and closed position limits and adjustable opening and closing obstruction force sensitivity limits, the control having a learn mode for setting the limits and an operate mode for door opening and closing;
- the control comprising;
manually controlled learn switch means for entering a learn mode; manually controlled operate switch means for entering an operate mode to control door movement; means responsive to the learn switch means for establishing limits of the position and sensitivity; means responsive to the operate switch means for operating the control within the established limits; and the means for operating the control including limit enhancing means for establishing new limits while in the operate mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the control comprising;
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11. In a garage door operator having a microcomputer based control, a motor for opening and closing a door, a motor revolution sensor for determining motor speed and door position, adjustable open and closed position limits and adjustable opening and closing obstruction force sensitivity limits stored in a memory, the control having a learn mode for setting the limits and an operate mode for normal door opening and closing;
- the method comprising the steps of;
in learn mode, operating the door and setting an open limit and an initial closed position limit; in learn mode during the step of operating the door, setting sensitivity limits for determining response to a door obstruction; initiating the operate mode; and
thenadaptively adjusting at least one of the limits while running the door operator in the operate mode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- the method comprising the steps of;
Specification