WO2010141033A1 - Stratégie de verrouillage de tronc de porte-clés - Google Patents

Stratégie de verrouillage de tronc de porte-clés Download PDF

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Publication number
WO2010141033A1
WO2010141033A1 PCT/US2009/048110 US2009048110W WO2010141033A1 WO 2010141033 A1 WO2010141033 A1 WO 2010141033A1 US 2009048110 W US2009048110 W US 2009048110W WO 2010141033 A1 WO2010141033 A1 WO 2010141033A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
area
vehicle
antenna
destroy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2009/048110
Other languages
English (en)
Inventor
Neil R. Garbacik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aumovio Systems Inc
Original Assignee
Continental Automotive Systems US Inc
Continental Automotive Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Systems US Inc, Continental Automotive Systems Inc filed Critical Continental Automotive Systems US Inc
Publication of WO2010141033A1 publication Critical patent/WO2010141033A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle

Definitions

  • This invention generally relates to system and method of detecting a key fob. More particularly, this invention relates to a system and method of preventing false detections of a key fob within a vehicle.
  • a key fob is utilized to control access to interior compartments of a motor vehicle and communicates with a receiver/transmitter within the vehicle through a wireless link.
  • the wireless link provides for the verification and operation of vehicle functions such as for example, locking and unlocking doors, and operating the vehicle.
  • a receiver/transmitter within the vehicle can be programmed to prompt and detect a signal from a key fob.
  • a responsive signal to a localized prompt can be utilized to detect the presence of key fob within a locked vehicle. The vehicle can then be automatically unlocked to allow access.
  • such key fob detection may also detect a key fob that is just outside the vehicle, instead of only within the vehicle. Such an occurrence can result in the vehicle undesirably unlocking. Accordingly, it is desirable to develop a system and method that prevents the false indication that a key fob is within a vehicle, when the key fob is outside of the vehicle.
  • a disclosed passive start and entry system includes a plurality of antenna utilized to detect a location of a key fob by defining a localized area within which a prompt signal can be received by the key fob.
  • the antennas within the vehicle can be used to determine a location of the key fob by sending a prompt signal over a localized area from one of the antennas.
  • a response from the key fob responsive to the prompt signal indicates that the key fob is within that localized area.
  • the localized area over which a valid prompt signal can be received by the key fob is constrained by sending destroy signals over other vehicle antennas.
  • one antenna emits a prompt signal through a localized area intended to detect the presence of the key fob within the vehicle trunk.
  • a destroy signal that interferes with reception of the prompt signal is transmitted over another antenna over an area that overlaps the localized area. Reception of the prompt signal in these overlapping areas is prevented by the concurrent emission of the destroy signal.
  • the emission of the destroy signal at the same time as emission of the prompt signal over portions of the localized area effectively limits and constrains the area within which the prompt signal can be received to within the vehicle trunk.
  • Figure 1 is a schematic view of a vehicle including an example passive start and entry system (PASE).
  • PASE passive start and entry system
  • Figure 2 is a schematic view of an example destroy signal transmitted to constrain a localized area.
  • Figure 3 is a schematic view of another example destroy signal transmitted to constrain the localized area.
  • Figure 4 is a flow diagram illustrating steps of the example method of preventing errant detection of key fob location.
  • a motor vehicle 10 includes passive start and entry system 15 that includes a transceiver 12 for communicating with a key fob 14.
  • the transceiver 12 sends a prompt signal 40 through one or all of several antennas disposed within the vehicle 10.
  • the example vehicle 10 includes an antenna 16 disposed within a trunk, an antenna 18 within the interior vehicle cabin, an antenna 22 at a front of the vehicle and an antenna 20 disposed at a bumper of the vehicle.
  • the placement of the antennas 16, 18, 20, and 22 within the vehicle 10 provide for receipt of response signals from the key fob 14 at various locations inside and outside of the vehicle.
  • the placement and number of antennas are by way of example, and other numbers and placements of antenna are within the contemplation of this invention.
  • the vehicle transceiver 12 sends a prompt signal through the antennas 16, 18, 20, and 22 of the vehicle 10 that is received by the key fob 14.
  • a response from the key fob 14 is then interrogated to determine if the key fob 14 is properly related to the vehicle 10. If the key fob 14 is properly related to the vehicle including an interrogation of an identification code and other security codes, then the key fob 14 will be able to function to operate the various portions of the vehicle such as unlocking the doors and trunks.
  • the antennas 16, 18, 20, and 22 within the vehicle can be used to determine a location of the key fob 14. Detection is determined by sending a prompt signal over a localized area from one of the antennas 16, 18, 20 and 22. A response from the key fob 14 responsive to the prompt signal indicates that the key fob is within that localized area. This is specifically desirable to detect the presence of a key fob 14 if it is errantly placed within a trunk 34 of the vehicle.
  • a prompt signal emitted from one of the antennas 16, 18, 20, and 22 will generate a localized area larger than desired.
  • a prompt signal from a prompt antenna such as the antenna 16 within the vehicle trunk 34, may extend outside of the vehicle, and/or into the interior cabin 32 of the vehicle 10. Therefore, if the key fob 14 is just outside of the trunk 34 on the outside of the vehicle, or within the interior cabin, it may receive a leaked prompt signal and send a response signal to the vehicle transceiver 12. Such a response would incorrectly indicate that the key fob 14 is within the vehicle trunk 34 and cause unlocking and opening of the vehicle trunk 34.
  • the example system constrains the localized area over which a valid prompt signal can be received by sending destroy signals over other vehicle antennas.
  • the antenna 16 emits a prompt signal 40 through a localized area 24 intended to detect the presence of the key fob 14 within the vehicle trunk 34.
  • the illustrated area 24 comprises the range in which the prompt signal emitted from the antennal 16 can be detected by the key fob 14.
  • the area 24 extends just outside the trunk 34 and over the bumper 36. Further, the area 24 extends partially into the interior cabin 32 of the vehicle 10. Therefore, if the key fob 14 is just outside of the trunk 34 or just inside the interior cabin 32, it may receive the prompt signal 40, causing a response signal to be emitted that would be indicative of the key fob 14 being within the vehicle trunk 34.
  • the disclosed system emits a destroy signal 44 over the antennas 18 and 20.
  • the destroy signal 44 is a signal that disrupts or interferes with reception of the prompt signal 40 such that the key fob 14 does not send a response signal.
  • the antennas 18 and 20 emit the destroy signal 44 over areas 26 and 28 that overlap portions 30 of the area 24. Reception of the prompt signal 40 in these overlapping areas 30 is prevented by the concurrent emission of the destroy signal 44.
  • the emission of the destroy signal 44 at the same time as emission of the prompt signal 40 over portions of the localized area 24 effectively limits and constrains the area 24 within which the prompt signal 40 can be received to within the vehicle trunk 34.
  • the example PASE system 15 constrains the boundaries of the localized area 24 that is utilized to determine if a key fob 14 is within the trunk 34 or not.
  • the system 15 utilizes the antennas 18 and 20 to constrain the localized area 24 that receives the prompt signal 40.
  • the example method includes emitting a prompt signal 40 from the antenna 16 within the trunk 34 and a destroy signal 44 with the antenna 18 within the vehicle cabin 32.
  • the prompt signal 40 is emitted over the area 24 that extends partially into the interior cabin 32.
  • the destroy signal 44 is emitted over the area 28 by the antenna 18.
  • no prompt signal 40 can be received by the key fob 14.
  • the key fob 14 is shown in the vehicle trunk 34. Accordingly, because the key fob 14 is not within the overlapping areas 30, it will receive the prompt signal 40 and emit a response signal 42. The response signal 42 will be received and provide an indication that the key fob 14 is within the vehicle trunk 34.
  • the method continues by conducting another search with another set of signals.
  • the antenna 16 within the trunk 34 emits the prompt signal 40 and the antenna 20 on the bumper 36 emits a destroy signal 44.
  • the antenna 16 transmits the prompt signal 40 over the area 24 and the antenna 20 transmits a destroy signal 44 over the area 26 with a portion 30 of each area overlapping.
  • the concurrent transmission of the prompt signal 40 and the destroy signal 44 will prevent a response transmission from the key fob 14, if it is disposed as illustrated outside of the trunk 34 and within the overlapping region 30. Accordingly, in this instance, no response is emitted by the key fob 14 as the destroy signal 44 prevents valid and clear reception of the prompt signal 40. This effectively constrains the boundary of localized area 24.
  • the example destroy signal is emitted over only one of the antennas 18, 20 at the same time the prompt signal is emitted from the antenna 16. Therefore, to prevent errant location of the key fob 14, the antennas 18 and 20 are alternately activated to emit the destroy signal 44. That is during a first search 52, the antenna 16 emits a prompt signal and the antenna 18 emits a destroy signal to constrain one side of the localized area 24. Then during a second subsequent search 54, the antenna 16 emits the prompt signal 40 and the antenna 20 emits the destroy signal 44 to constrain a second side of the localized area 24. In the illustrated example, each search is performed three times alternating between transmission of the destroy signal 44 over antennas 18 and 20 each time.
  • the system 15 begins the first search 50 for the key fob 14 upon closing of the trunk indicated at 48.
  • the search beings with the first search 52 including the antenna 16 emitting a valid prompt signal 40, indicated at 56, and the antenna 18 concurrently emitting a destroy signal 44, indicated at 58.
  • Whether or not a response is received, as indicated at 60, is recorded and the second search 52 conducted.
  • the antenna 16 again emits a valid prompt signal 40 as indicated at 56, and the antenna 20 on the bumper 36 emits a destroy signal 44, as indicated at 58.
  • the example destroy signal 44 emitted by the antenna 20 is smaller than the destroy signal 44 emitted by the antenna 18 as a smaller area required to be covered.
  • Whether or not a response is received, as indicated at 62, in combination with the results of the first search 52 is utilized to determine if the key fob 14 is or is not within the vehicle trunk.
  • the searches result in the alternating transmission of a destroy signal 44 from the antenna 18 and the antenna 20 both in concurrence with a simultaneous transmission of the prompt signals from the antenna 16.
  • the decision as to whether or not the key fob 14 is within the vehicle trunk 34 depends on the results of the two searches 52, 54. If a response is received in the first search 52, but not in the second search 54, then the key fob 14 is determined not to be within the vehicle trunk 34. Consequently, a response from the key fob 14 in each of the first and second searches 52, 54 is required to indicate that the key fob 14 is within the trunk 34.
  • the searches 52 and 54 can be repeated several times to provide a desired degree of accuracy. Further, other sequences could be utilized to constrain other portions of any localized area.
  • the antenna 18 and 20 can be actuated at the same time in concurrence with the prompt signal 40 that is sent by the antenna 16. This provides for the concurrent constraint of the localized area both within the interior cabin of the vehicle as is provided by the antenna 18 and the exterior bumper area of the vehicle 10. Additionally, although the example method and system is described as it refers to detecting a key fob 14 within a trunk 34, the method and system could be utilized to locate the key fob 14 in other areas of the vehicle. [0032] Accordingly, the method and system provided by this invention will prevent the errant detection of key fobs that are not within the vehicle trunk area and does so without additional hardware or other extension modifications to the system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention porte sur un système de démarrage et d'entrée passif, qui comprend une pluralité d'antennes utilisées pour détecter un emplacement d'un porte-clés par définition d'une zone localisée à l'intérieur de laquelle un signal d'ordre peut être reçu par le porte-clés. La zone localisée sur laquelle un signal d'ordre valide peut être reçu par le porte-clés est restreinte par l'envoi de signaux de destruction sur d'autres antennes de véhicule.
PCT/US2009/048110 2009-06-01 2009-06-22 Stratégie de verrouillage de tronc de porte-clés Ceased WO2010141033A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18288409P 2009-06-01 2009-06-01
US61/182,884 2009-06-01

Publications (1)

Publication Number Publication Date
WO2010141033A1 true WO2010141033A1 (fr) 2010-12-09

Family

ID=41606636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/048110 Ceased WO2010141033A1 (fr) 2009-06-01 2009-06-22 Stratégie de verrouillage de tronc de porte-clés

Country Status (1)

Country Link
WO (1) WO2010141033A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587738A (zh) * 2011-01-13 2012-07-18 欧姆龙汽车电子株式会社 电波收发体的检测装置、检测系统及检测方法
JP2015175222A (ja) * 2014-03-18 2015-10-05 ダイハツ工業株式会社 キーフリー携帯機の閉じ込み防止装置
US11091011B2 (en) * 2018-03-29 2021-08-17 Nissan North America, Inc. Vehicle diagnostic system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837964A1 (fr) * 2002-03-26 2003-10-03 Valeo Electronique Procede pour deceler la presence d'un capteur dans une zone predeterminee, application de ce procede a la gestion d'un systeme mains libres de decondamnation de vehicule automobile et systeme mains libres de decondamnation
US20050162259A1 (en) * 2003-12-25 2005-07-28 Omron Corporation Vehicular remote control system and tire pressure monitoring system
US20080106367A1 (en) * 2006-11-03 2008-05-08 Siemens Vdo Automotive Corporation Cross conduction protection on antennas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837964A1 (fr) * 2002-03-26 2003-10-03 Valeo Electronique Procede pour deceler la presence d'un capteur dans une zone predeterminee, application de ce procede a la gestion d'un systeme mains libres de decondamnation de vehicule automobile et systeme mains libres de decondamnation
US20050162259A1 (en) * 2003-12-25 2005-07-28 Omron Corporation Vehicular remote control system and tire pressure monitoring system
US20080106367A1 (en) * 2006-11-03 2008-05-08 Siemens Vdo Automotive Corporation Cross conduction protection on antennas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587738A (zh) * 2011-01-13 2012-07-18 欧姆龙汽车电子株式会社 电波收发体的检测装置、检测系统及检测方法
US9432953B2 (en) 2011-01-13 2016-08-30 Omron Automotive Electronics Co., Ltd. Detection device, detection system and detection method of radio wave transmitting/receiving body
JP2015175222A (ja) * 2014-03-18 2015-10-05 ダイハツ工業株式会社 キーフリー携帯機の閉じ込み防止装置
US11091011B2 (en) * 2018-03-29 2021-08-17 Nissan North America, Inc. Vehicle diagnostic system

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