Method and system for detecting door state and door sensor failures
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0396179
(2012-02-14)
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등록번호 |
US-8648689
(2014-02-11)
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발명자
/ 주소 |
- Hathaway, Richard Reynolds
- Deurloo, Brian J
- Danks, Christopher Lee
- Zyskowski, Mark Edward
- Tumavitch, Jeffrey James
- Spaulding, Todd Curtis
- Poon, Charles C
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출원인 / 주소 |
- Ford Global Technologies, LLC
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대리인 / 주소 |
Diederiks & Whitelaw, PLC
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인용정보 |
피인용 횟수 :
4 인용 특허 :
5 |
초록
▼
A system includes a controller that executes a method for determining failure of the door latch sensor using both the door latch sensor and a door lock sensor. If the door latch sensor is faulty, the controller adjusts an automatic feature of the vehicle based on a door lock signal instead of a door
A system includes a controller that executes a method for determining failure of the door latch sensor using both the door latch sensor and a door lock sensor. If the door latch sensor is faulty, the controller adjusts an automatic feature of the vehicle based on a door lock signal instead of a door state signal. The controller is also configured to mark the door latch signal as faulty if the door latch system is not functioning properly by using a fault counter that tracks the door lock sensor.
대표청구항
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1. In a vehicle including a door, a door latch sensor, a door lock sensor, a shift-by-wire transmission and a controller, a method for performing a controller feature comprising: determining failure in the door latch sensor including receiving a door state signal from the door latch sensor, receivin
1. In a vehicle including a door, a door latch sensor, a door lock sensor, a shift-by-wire transmission and a controller, a method for performing a controller feature comprising: determining failure in the door latch sensor including receiving a door state signal from the door latch sensor, receiving a door lock signal from the door lock sensor, and determining, based on inconsistencies in the door state signal and the door lock signal, if the door latch sensor is faultydetermining a door state based on the door state signal when the door latch sensor is not faulty and based on the door lock signal and not the door state signal when the door latch sensor is faulty; andperforming the controller feature based on the door state. 2. The method of claim 1, further comprising: initializing a first memory for remembering the door state to be indeterminate. 3. The method of claim 2, further comprising: changing the first memory to remember the door state to be closed when the door state signal indicates a transition from open to closed or the door lock signal indicates a transition from unlocked to locked. 4. The method of claim 2, further comprising: changing the first memory to remember the door state to be open when the door state signal indicates a transition from closed to open or the door lock signal indicates a transition from locked to unlocked. 5. The method of claim 1, further comprising: sending a lock command signal to a door lock;determining if the door lock signal indicates that the door lock has switched to a locked position;sending an unlock command signal to the door lock;determining if the door lock signal indicates that the door lock has switched to an unlocked position;increasing a fault counter when the lock or unlock command signal does not change the door lock to the locked or unlocked position respectively; anddecreasing the fault counter when the lock or unlock command signal does change the door lock to the locked or unlocked position respectively. 6. The method of claim 5, further comprising: setting a fault flag when the fault counter exceeds a threshold value. 7. The method of claim 1, wherein the controller feature automatically shifts the transmission to Park if the vehicle is traveling below a low set speed threshold upon detecting a triggering event. 8. The method of claim 7, wherein the triggering event is selected from at least one of: the door state is open or indeterminate and a signal from a seat-belt sensor transitions from indicating that a seatbelt is buckled to indicating that the seat-belt is unbuckled; a signal from the seatbelt sensor indicates that the seatbelt is unbuckled and the door state transitions from closed to open; the seatbelt sensor has failed and the door state transitions from closed to open; and an ignition switch has been turned off. 9. A system performing a controller feature comprising: a vehicle including, a shift-by-wire transmission, a controller and a door having a door latch and a door lock;a door latch sensor for sending a door state signal indicating if the door is open or closed;a door lock sensor for sending a door lock signal indicating if the door is locked or unlocked; anda controller configured to: determine failure in the door latch sensor by receiving the door state signal from the door latch sensor, receiving a door lock signal from the door lock sensor, and determining, based on inconsistencies in the door state signal and the door lock signal, if the door latch sensor is faulty; determine a door state based on the door state signal when the door latch sensor is not faulty and based on the door lock signal and not the door state signal when the door latch sensor is faulty; and perform the controller feature based on the door state. 10. The system of claim 9, wherein the controller includes a first memory and is configured to initialize the first memory to remember the door state to be indeterminate. 11. The system of claim 10, wherein the controller is further configured to change the first memory to remember the door state to be closed when the door state signal indicates a transition from open to closed or the door lock signal indicates a transition from unlocked to locked. 12. The system of claim 10, wherein the controller is further configured to change the first memory to remember the door state to be open when the door state signal indicates a transition from closed to open or the door lock signal indicates a transition from locked to unlocked. 13. The system of claim 9, wherein the controller is configured to send a lock command signal to the door lock;determine if the door lock signal indicates that the door lock has switched to a locked position;send an unlock command signal to the door lock;determine if the door lock signal indicates that the door lock has switched to an unlocked position;increase a fault counter when the lock or unlock command signal does not change the door lock to the locked or unlocked position respectively; anddecrease the fault counter when the lock or unlock command signal does change the door lock to the locked or unlocked position respectively. 14. The system of claim 13, wherein the controller is configured to set a fault flag when the fault counter exceeds a threshold value. 15. The system of claim 13, wherein the controller is configured to determine if the door state signal is faulty by counting how many times the door state signal indicates the door being opened or closed and determining if the number of times exceeds a threshold. 16. The system of claim 9, wherein the controller feature is configured to automatically shift a transmission to Park if the vehicle is traveling below a low set speed threshold upon detecting a triggering event. 17. The system of claim 16, wherein the triggering event is selected from at least one of: the door state is open or indeterminate and a signal from a seatbelt sensor transitions from indicating that a seatbelt is buckled to indicating that the seat-belt is unbuckled; a signal from the seatbelt sensor indicates that the seatbelt is unbuckled and the door state transitions from closed to open; the seatbelt sensor has failed and the door state transitions from closed to open; or an ignition switch has been turned off.
이 특허에 인용된 특허 (5)
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Shih-Chung Chiang TW, Device for preventing theft of motor vehicle by jacking up motor vehicle at the time of theft under way.
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Matsumoto Masaharu (Yokohama JPX), Electric door lock system.
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Yamamoto,Yasushi, Parking device for vehicle.
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Kobayashi Fumio (Yokohama JPX), Power door lock device.
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Ichikawa,Takashi; Suyama,Terumasa, Vehicle drive system controller.
이 특허를 인용한 특허 (4)
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Eichin, Matthias; Ohl, Thomas; Luther, Bastian, Method for monitoring a door contact switch of a driver's door of a motor vehicle.
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Adams, Jr., Virgil Philip; Harada, Ryo; Tezuka, Takashi; Jackson, David B.; Kuki, Hiroyuki; Parker, Jr., Dennis P., Neutral-hold mode system and method.
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Linden, H. Paul Tsvi; Bejune, Daniel Carl; Van Wiemeersch, John Robert; Kleve, Robert Bruce; Ricks, John Thomas; Papanikolaou, Kosta; Mass, Noah Barlow; Boran, Lisa Therese; Brombach, Ronald Patrick; Weinfurther, Jim Michael, Powered latch system for vehicle doors and control system therefor.
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Linden, H. Paul Tsvi; Eddy, III, John; Radjewski, Christopher Matthew; Hicks, Spencer; Ricks, John Thomas, Priority driven power side door open/close operations.
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