Door closer with teach mode

• US 8,773,237 B2
• Filed: 04/16/2010
• Issued: 07/08/2014
• Est. Priority Date: 04/16/2010
• Status: Active Grant

• Current Assignee: ASSA ABLOY Accessories and Door Controls Group, Inc.
• Original Assignee: Yale Security Incorporated (Assa Abloy AB)
• Inventors: Burris, Charles E., Tadlock, Robert L. Jr., White, John, Gurley, Jason Scott, Faes, Steven Michael, McGinty, Joseph, Patterson, Wade
• Primary Examiner(s): Lee, Benjamin C
• Assistant Examiner(s): CARLSON, ADAM C
• Application Number:
  US12/761,653
• Publication Number:
  US 20110254657A1
• Time in Patent Office: 1,544 Days
• Field of Search: 16 49- 50, 16 71- 86 C, 324/130, 324/207.25, 702/151
• US Class Current: 340/3.32
• CPC Class Codes: E05F 3/227 mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
• CPC Class Codes: E05Y 2201/21 Brakes
• CPC Class Codes: E05Y 2201/25 Force or torque adjustment therefore E05Y2400/21 takes precedence
• CPC Class Codes: E05Y 2201/256 with pistons or vanes
• CPC Class Codes: E05Y 2201/264 linear
• CPC Class Codes: E05Y 2201/43 Motors
• CPC Class Codes: E05Y 2400/34 Pulse count limit setting
• CPC Class Codes: E05Y 2400/456 for programming
• CPC Class Codes: E05Y 2400/612 Batteries
• CPC Class Codes: E05Y 2400/616 Generators
• CPC Class Codes: E05Y 2800/00 Details, accessories and auxiliary operations not otherwise provided for
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: G05B 19/0426 Programming the control sequence
• CPC Class Codes: G05B 2219/23064 Entry of function or parameter during manipulation of tool, operation
• CPC Class Codes: G05B 2219/2628 Door, window

Abstract

A door closer with a teach mode is disclosed. The door closer that can be self powered and includes a control unit to intelligently control a valve within the door closer to vary the operating characteristics of the door closer as needed. The control unit includes a teach mode that can be invoked at installation time, or any other time, so that appropriate information can be stored in memory regarding an installation configuration, relative jamb position, swing (right or left handed) and other parameters. These values can be accessed by control circuitry in the controller for use in controlling the door closer during operation.

Claims

1. A method of operating a controller for a door closer in a teach mode, the method comprising:

determining that the teach mode has been entered;

reading a user interface to determine an installation configuration for the door closer;

monitoring a position of a door as the door moves in order to determine a swing for the door;

monitoring the position and movement of the door in order to determine when the door is at a jamb position;

storing arm gear values separated by a specified time interval in the controller as the door moves;

determining by the controller whether the door is mounted for left handed or right handed opening based on the stored arm gear values;

storing values regarding at least the installation configuration, the swing, whether the door is mounted for left handed or right handed opening, and the jamb position in the controller to be accessed by control circuitry in the controller;

comparing the stored values to stored calibration curves, wherein the stored calibration curves independently profile opening motion and closing motion of the door; and

skewing at least one of the stored values for use in controlling the door closer in response to the comparing of the stored values to the stored calibration curves.

2. The method of claim 1 wherein the determining that the teach mode has been entered further comprises sensing a change in a magnetic field using a hall effect sensor.

3. The method of claim 1 wherein the stored calibration curves further comprise a value at or near a virtual jamb position.

4. The method of claim 3 wherein the determining that the teach mode has been entered further comprises sensing a change in a magnetic field using a hall effect sensor.

5. Apparatus for teaching control circuitry for a door closer values for a door to be used in controlling the door closer, the apparatus comprising:

means for determining that a teach mode has been entered;

means for reading a user interface to determine an installation configuration for the door closer;

means for monitoring a position of the door as the door moves in order to determine a swing for the door;

means for monitoring the position and movement of the door in order to determine when the door is at a jamb position;

means for storing arm gear values separated by a specified time interval in the controller as the door moves;

means for determining by the controller whether the door is mounted for left handed or right handed opening based on the stored arm gear values;

means for storing values regarding at least the installation configuration, the swing, whether the door is mounted for left handed or right handed opening, and the jamb position in the control circuitry to be accessed by a controller;

means for comparing the stored values to stored calibration curves, wherein the stored calibration curves independently profile opening motion and closing motion of the door; and

means for skewing at least one of the stored values for use in controlling the door closer.

6. The apparatus of claim 5 wherein the means for sensing that a teach mode has been entered further comprises a hall effect sensor.

7. The apparatus of claim 6 wherein the stored calibration curves further comprise a value at or near a virtual jamb position.

8. A controller for a door closer comprising:

a position sensor to determine a position of a door;

a user interface to provide information regarding an installation configuration of the door closer;

a memory to store values regarding at least the installation configuration, a swing, whether the door is mounted for left handed or right handed opening, and a jamb position for the door; and

control circuitry having a teach mode, the control circuitry functionally connected to the position sensor, the memory, and the user interface, the control circuitry operable in the teach mode to read the user interface to determine the installation configuration, to monitor position and movement of the door in order to determine the swing for the door and when the door is at the jamb position, to store arm gear values separated by a specified time interval as the door moves and determine whether the door is mounted for left handed or right handed opening based on the stored arm gear values, to compare the stored values in the memory to stored calibration curves that independently profile opening and closing motion of the door and to skew at least one of the stored values for use in controlling the door closer.

9. The controller of claim 8 wherein the stored calibration curves further comprise a value at or near a virtual jamb position.

10. The controller of claim 8 further comprising a hall effect device connected to the control circuitry to initiate the teach mode.

11. The controller of claim 8 further comprising a generator responsive to motion of the door to generate electricity to operate the controller.

12. The controller of claim 9 further comprising a generator responsive to motion of the door to generate electricity to operate the controller.

13. The controller of claim 10 further comprising a generator responsive to motion of the door to generate electricity to operate the controller.

14. A door closer having a teach mode, the door closer comprising:

a spring;

a movable element configured to move in response to movement of a door, the movable element loading the spring;

a valve configured to control movement of hydraulic fluid around the movable element;

a position sensor to determine a position of the door;

a user interface to provide information regarding an installation configuration of the door closer;

a memory to store values regarding at least the installation configuration, a swing, whether the door is mounted for left handed or right handed opening, and a jamb position for the door; and

control circuitry having a teach mode, the control circuitry functionally connected to the position sensor, the memory, and the user interface, the control circuitry operable in the teach mode to read the user interface to determine the installation configuration, to monitor position and movement of the door in order to determine the swing for the door and when the door is at the jamb position, to store arm gear values separated by a specified time interval as the door moves and determine whether the door is mounted for left handed or right handed opening based on the stored arm gear values, to compare the stored values in the memory to stored calibration curves that independently profile opening and closing motion of the door and to skew at least one of the stored values for use in controlling the valve.

15. The door closer of claim 14 further comprising a device responsive to motion of the door to generate electricity to operate the controller.

16. The door closer of claim 15 wherein the device is a generator.

17. The door closer of claim 15 wherein the stored calibration curves further comprise a value at or near a virtual jamb position.

18. The door closer of claim 17 further comprising a hall effect device connected to the control circuitry to initiate the teach mode.