Door assist system controller and method

• US 8,373,550 B2
• Filed: 08/20/2008
• Issued: 02/12/2013
• Est. Priority Date: 08/20/2008
• Status: Active Grant

• Current Assignee: Control Solutions Incorporated (ADAMA Ltd.)
• Original Assignee: Control Solutions Incorporated (ADAMA Ltd.)
• Inventors: McKee, Michael, Scholtes, Nick, Hayden, John
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US12/194,966
• Publication Number:
  US 20120180391A1
• Time in Patent Office: 1,637 Days
• Field of Search: 340/435, 340/455, 340/457, 340/9.1, 340/10.5, 340/12.5, 340/12.513, 340/426.28, 340/5.61, 340/5.72, 340/426.24, 340/438, 320/104, 320/105, 320/133, 318/266, 318/286, 318/446, 318/443, 318/444, 318/445, 296/146.4, 296/146.9, 296/155, 702/37, 49/26, 493/60
• US Class Current: 340/426.28
• CPC Class Codes: B60R 25/01 operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
• CPC Class Codes: E05F 15/73 responsive to movement or presence of persons or objects
• CPC Class Codes: E05Y 2900/504 for armored vehicles
• CPC Class Codes: E05Y 2900/531 Doors
• CPC Class Codes: H02P 29/028 the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
• CPC Class Codes: H02P 29/032 Preventing damage to the motor, e.g. setting individual current limits for different drive conditions

Abstract

A controller for a door system and an associated method of operation for actuating a door. The controller may be electrically coupled with a motor, an outer door switch and an inner door switch. The controller, activates a motor assist and may maintain a desirable current supply to the motor assist. Determining a relative position of the door and determining whether movement of the door is obstructed is performed. The controller actuates the door to an appropriate position and determines whether door operation exceeds a maximum time threshold. The controller may be configured to deactivate the motor assist once the door reaches an appropriate position or the door operation exceeds the maximum time threshold.

Claims

1. A method of operation of a controller for actuating a door having a motor assist and an inner door switch and an outer door switch that respectively initiate opening of the door when actuated, the method comprising the steps of:

operating the controller, the controller uses one or more user-programmable presets that respectively correspond to door operation;

activating the motor assist based at least in part on the one or more user-programmable presets to move the door between a closed door position and an open door position;

maintaining a desirable current supply to the motor assist when moving the door between the closed door position and the open door position;

determining a relative position of the door when moving the door between the closed door position and the open door position;

engaging a lockout switch; and

overriding the outer door switch in favor of the inner door switch such that the door cannot be opened via the outer door switch when the lockout switch is engaged.

2. The method of claim 1 further comprising:

programming the controller using at least one of the inner door switch and the outer door switch.

3. The method of claim 1 further comprising:

programming the controller using at least one of the inner door switch, the outer door switch, a safety sensor, a door position sensor, a motor current draw, a battery voltage level or an alternator output.

4. The method of claim 1 further comprising:

activating the motor assist responsive to manual activation of an inside door handle.

5. The method of claim 4 further comprising:

reversing actuation of the door for a preset amount following activation of a safety switch wherein the safety switch uses pressure sensing to sense the presence of an obstruction between the door and a door frame.

6. The method of claim 1 further comprising:

activating at least one door switch for a preset period of time; and

activating the motor assist until the door is in a fully open or fully closed position.

7. The method of claim 6 further comprising:

sensing a current position of the door; and

moving the door to a position opposite the current position.

8. The method of claim 1 further comprising:

programming at least one preset for a door stopping position; and

retaining the at least one preset within the controller.

9. The method of claim 1 further comprising:

programming at least one preset for a mode of operation; and

retaining the at least one preset within the controller.

10. The method of claim 1 further comprising:

programming at least one preset for a speed of the motor assist; and

retaining the at least one preset within the controller.

11. The method of claim 1 further comprising:

programming at least one preset for a current draw of the motor assist; and

retaining the at least one preset within the controller.

12. The method of claim 1 further comprising:

determining a nominal current required to operate the door on a level surface under ordinary load; and

adjusting the desirable current supply if the nominal current is exceeded.

13. The method of claim 1 further comprising:

determining whether movement of the door is obstructed; and

reversing actuation of the door in response to a determination that movement of the door is obstructed.

14. The method of claim 1 further comprising:

determining whether door operation exceeds a maximum time threshold; and

deactivating the motor assist once the door operation exceeds the maximum time threshold.

15. The method of claim 1 further comprising:

activating the door to a user-programmable door stopping position; and

deactivating the motor assist once the door reaches the door stopping position.

16. A vehicle door having a motor assist comprising:

a dedicated power supply connected with respect to the motor assist;

a controller connected between the motor assist and the dedicated power supply, the controller maintains a desirable current supply to a motor from the dedicated power supply and determines a relative position of the door, the controller further stops the motor if movement of the door is obstructed or exceeds operation for a preset time threshold; and

a memory associated with the controller, the memory stores one or more presets of respective door stopping positions wherein the one or more presets are stored using at least one of an operable handle or a switch associated with the vehicle door.

17. The vehicle door of claim 16 further comprising:

an override switch that deactivates external controls of the vehicle door.

18. The vehicle door of claim 16 wherein the controller is connected between the dedicated power supply and a vehicle battery.

19. The vehicle door of claim 16 wherein the controller reverses the operation of the door upon obstruction of the door.

20. The vehicle door of claim 16 wherein the controller modulates the desirable current supply provided to the motor if the vehicle door is open or closed on an incline.

21. The vehicle door of claim 16 wherein the controller modulates the desirable current supply provided to the motor if the vehicle door is open or closed while overloaded.

22. A system for motorizing at least one door of a vehicle relative to a door frame of the vehicle, the system comprising:

a drive system coupled at least in part to the door and the door frame of the vehicle, the drive system moves the door between a closed door position and an open door position;

a controller coupled at least in part with the drive system to control door operation of the door;

a safety mechanism coupled at least in part with the controller, the safety mechanism uses pressure sensing to sense the presence of an obstruction between the door and door frame and to signal the controller upon sensing the obstruction; and

wherein the safety mechanism comprises at least one safety sensor adapted to send a door stop signal to the controller upon sensing an obstruction between the sensor and the door frame, the safety sensor comprises a multi-segmented single pole switch having a plurality of sensor segments coupled by electrical connections, and the sensor segments are positioned to sense obstructions to door closings.

23. The system of claim 22 in which the at least one safety sensor is disposed around an outer perimeter of an internal side of the door.

24. The system of claim 22 wherein the door stop signal is sent to the controller in response to any one of the sensor segments being contacted when the door is closing.

25. The system of claim 22 wherein the controller is adapted to open the door of the vehicle a preselected amount upon sensing of the obstruction to prevent entrapment of the obstruction.

26. The system of claim 22 wherein the controller is adapted to determine the presence of an obstruction located between the door and door frame.

27. The system of claim 26 wherein the controller is adapted to stop a motor of the drive system if the controller determines the presence of the obstruction.

28. The system of claim 22 further comprising a door position sensor adapted to detect movement and position of the door and to relay this information to the controller.

29. The system of claim 28 wherein the door position sensor is mounted proximate a door hinge with one portion attached to the door and another portion attached the door frame.

30. The system of claim 28 further comprising a door open sensor coupled at least in part with the controller to signal the controller to activate the drive system and open the door upon determining that a latch actuator has been actuated.

31. The system of claim 30 further comprising an external close switch mounted to an external side of one of the door or the vehicle, wherein the external close switch is in communication with the controller and, when activated, signals the controller to move the door toward the closed door position;

and

an internal close switch mounted to an internal side of one of the door or the vehicle, wherein the internal close switch is in communication with the controller and, when activated, signals the controller to move the door toward the closed door position.

32. The system of claim 22 further comprising a door stop switch, the door stop switch when actuated initiates the deactivation of door movement such that the door stops moving either towards the door open position or the door closed position.

33. The system of claim 32 in which no further door movement takes place upon release of the door stop switch.

34. The system of claim 32 in which actuation of the door stop switch prompts the controller to open the door that moved towards the closed door position a preselected amount after movement of the door has been stopped.

35. A method of controlling operation of a door of a vehicle relative to a door frame of the vehicle, comprising:

coupling a drive system at least in part to the door and door frame of the vehicle, the drive system adapted to move the door between a closed door position and an open door position;

coupling a controller at least in part with the drive system;

sensing a position of the door;

receiving a door open command or a door close command at the controller;

initiating opening or closing of the door at preselected speeds based on the command received;

determining the length of time that the open command or close command is continuously received; and

directing the drive system to move the door at a relatively slow speed for a predetermined initial time period and to move the door at a relatively faster speed after the predetermined initial time period has ended.

36. The method of claim 35 wherein the relatively faster speed is a full speed for movement of the door until the door reaches a stop position.

37. The method of claim 35 further comprising moving the door to a fully open or closed position if the length that the open command or close command is continuously received exceeds a predetermined time period.

38. The method of claim 35 further comprising mounting a door open sensor to an internal latch actuator or an external latch actuator of the door, wherein the door open sensor is in communication with the controller.

39. The method of claim 35 further comprising sensing the presence of an obstruction between the door and the door frame and sending a door stop signal to the controller upon sensing the obstruction.

40. The method of claim 39 further comprising signaling the drive system to open the door of the vehicle a preselected amount upon the controller receiving the door stop signal.

41. The method of claim 35 further comprising providing the controller with control algorithms for door control operation based on received system inputs and user-programmable settings.