GB2309488A - Vehicle security arrangement - Google Patents

Vehicle security arrangement Download PDF

Info

Publication number
GB2309488A
GB2309488A GB9601664A GB9601664A GB2309488A GB 2309488 A GB2309488 A GB 2309488A GB 9601664 A GB9601664 A GB 9601664A GB 9601664 A GB9601664 A GB 9601664A GB 2309488 A GB2309488 A GB 2309488A
Authority
GB
United Kingdom
Prior art keywords
key
vehicle
security arrangement
antenna
vehicle security
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.)
Withdrawn
Application number
GB9601664A
Other versions
GB9601664D0 (en
Inventor
Michel Burri
Hans Staufer
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to GB9601664A priority Critical patent/GB2309488A/en
Publication of GB9601664D0 publication Critical patent/GB9601664D0/en
Publication of GB2309488A publication Critical patent/GB2309488A/en
Withdrawn legal-status Critical Current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
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • 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
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
    • 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
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional 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
    • 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
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves

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

A transmitter key 10 sends an RF signal to an antenna 120 and a receiver 130 of a reader 100 to provide vehicle door unlocking. A magnetic coil 140 in the key barrel 110 receives a signal from a key coil 30 to enable the vehicle ignition when the key is inserted in the barrel. The antenna may be located in the steering wheel.

Description

VEHICLE SECURmt Y ARRANGEMENT Field of the Invention This invention relates to vehicle security arrangements, and particularly though not exclusively to automobile security arrangements.
Background of the Invention A vehicle security arrangement typically comprises door/entry locks as well as ignition immobilisers. Door/entry locks may be infra-red or radiowave contactless arrangements, having a remote transmitting key and a receiver either within or attached to the vehicle.
An antenna is typically employed to receive signals from the transmitting key, to provide them to the receiver circuit. The antenna is typically located in order that the door/entry lock may be activated and deactivated from a position outside, but in proximity to the vehicle.
A problem with this arrangement is that due to transmission losses, the receiver circuit must be placed close to the antenna, which is inconvenient for the car manufacturer and may expose the receiver circuit so as to compromise security.
Furthermore, different models of the same vehicle may have variations which still further inconvenience the vehicle manufacturer, since the size of the antenna used and the position of the antenna and the receiver circuit may vary from model to model of vehicle.
This invention seeks to provide a vehicle security arrangement which mitigates the above mentioned disadvantages.
Summarv of the Invention According to the present invention there is provided a vehicle security arrangement, comprising: immobiliser means arranged for immobilising a device within the vehicle, the immobiliser means including a controller and a remote key; locking means arranged to secure access to the vehicle, the locking means including a transmitter portion and a receiver portion; wherein the receiver portion is co-located with the controller.
The controller is preferably coupled to a key barrel, and wherein the receiver portion includes an antenna for receiving signals from the transmitter portion, the antenna being integral with the key barrel.
Preferably the antenna is a magnetic antenna.
The immobiliser means is preferably a contactless arrangement.
Preferably the receiver portion and the controller are integrated.
The key and the transmitter portion are preferably co-located. The device to be immobilised is a preferably vehicle engine ignition.
Brief Description of the Drawing An exemplary embodiment of the invention will now be described with reference to the single figure drawing which shows a preferred embodiment of a vehicle security arrangement.
Detailed Description of a Preferred Embodiment Referring to FIG.1, there is shown a vehicle security arrangement 10, comprising a key 10 and a reader 100. The reader is installed in a vehicle, and the key is typically in the possession of a user. The key 10 includes an integrated circuit 20, an inductor coil 30, a user button 40, a battery 50, a fixed male member 60 and a Radio Frequency (RF) transmitter 70.
The integrated circuit 20 of the key 10 is coupled to the inductor coil 30, the user button 40 and the battery 50, and is arranged to provide two functions.
A first function is activated by the user button 40. When the key is in proximity to the vehicle, activation of the user button triggers the integrated circuit 20, powered by the battery 50, to cause the RF transmitter 70 to send an RF signal to the reader 100.
The reader 100 includes a magnetic coil antenna 120 and a receiver circuit 130, arranged to receive RF signals sent by the key 10.
The second function of the integrated circuit 20 of the key 10 is to receive and transmit signals by magnetic coupling through the inductor coil 30.
For this purpose, the reader 100 includes a key barrel 110 arranged to receive the fixed male member 60 of the key, and an inductor coil 140 integrated into the key barrel 110.
The reader 100 also includes a modulator/demodulator circuit 150, coupled to the inductor coil 140, and a controller 160, coupled to the modulator/demodulator circuit 150 and to the receiver circuit 130. The modulator/demodulator circuit 150 is arranged for modulating a signal received from the controller 160 on to a carrier frequency, for transmission to the inductor coil 30 of the key 10 via the inductor coil 140. The modulator/demodulator circuit 150 is also arranged for demodulating signals received from the key 10 via the two inductor coils 30 and 140 respectively.
The reader 100 is coupled to a bus system 200 of the vehicle via a bus interface 170. The bus system provides connection to engine management integrated circuits, a vehicle alarm, door lock circuits etc. (not shown).
In operation, the first function of the integrated circuit is arranged to provide secure access to the vehicle by the user operating the user button 40.
The integrated circuit 20 generates a signal which is transmitted by the RF transmitter 70.
The signal contains an embedded security feature, such as a unique algorithm or a pseudo random number. The controller 160 in the reader 100 is arranged to respond only to the embedded security feature of the key 10, such that other signals sent by devices other than the key 10, will not be responded to. The controller 160, upon receipt and verification of the signal from the key 10, initiates a procedure to unlock vehicle doors, disarm alarm systems etc..
Once the user is inside the vehicle, the male member 60 of the key is inserted into the key barrel 110. When the key 10 is turned in the barrel 110, the controller 160 is prompted to send a signal to the modulator/demodulator circuit 150, for transmission to the key 10 via the inductor coils 140 and 30. The signal is modulated by the modulator/demodulator circuit 150, and transmitted to the key 10.
The integrated circuit 20 is arranged to receive the modulated signal received by inductance through the inductor coil 30. The carrier frequency is used to power the integrated circuit 20 in this function, and the modulation information is used to convey the signal. Again this signal contains an embedded security feature, this time initiated by the controller 160. The integrated circuit 20 responds to the signal, which is transmitted back to the modulator/demodulator circuit 150 via the inductor coils 30 and 140. This response signal is demodulated and provided back to the controller 160 which compares the response signal to a predetermined value or algorithm. If the response is correct, then the controller 160 initiates a procedure to enable the vehicle ignition, electrical system etc.
It will be appreciated by a person skilled in the art that alternative embodiments to the one described above are possible. For example, the magnetic coil antenna 120 could be located in another area, such as on the steering wheel of the vehicle. If different models of the same vehicle use the same steering wheel, this would provide a similar advantage to the location of the magnetic coil antenna 120 with the key barrel 110.

Claims (8)

Claims
1. A vehicle security arrangement, comprising: immobiliser means arranged for immobilising a device within the vehicle, the immobiliser means including a controller and a remote key; locking means arranged to secure access to the vehicle, the locking means including a transmitter portion and a receiver portion; wherein the receiver portion is co-located with the controller.
2. The vehicle security arrangement of claim 1, wherein the controller is coupled to a key barrel, and wherein the receiver portion includes an antenna for receiving signals from the transmitter portion, the antenna being integral with the key barrel.
3. The vehicle security arrangement of claim 1 or claim 2, wherein the antenna is a magnetic antenna.
4. The vehicle security arrangement of any preceding claim, wherein the immobiliser means is a contactless arrangement.
5. The vehicle security arrangement of any preceding claim, wherein the receiver portion and the controller are integrated.
6. The vehicle security arrangement of any preceding claim, wherein the key and the transmitter portion are co-located.
7. The vehicle security arrangement of any preceding claim, wherein the device to be immobilised is a vehicle engine ignition.
8. A vehicle security arrangement substantially as hereinbefore described and with reference to the drawing.
GB9601664A 1996-01-27 1996-01-27 Vehicle security arrangement Withdrawn GB2309488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9601664A GB2309488A (en) 1996-01-27 1996-01-27 Vehicle security arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9601664A GB2309488A (en) 1996-01-27 1996-01-27 Vehicle security arrangement

Publications (2)

Publication Number Publication Date
GB9601664D0 GB9601664D0 (en) 1996-03-27
GB2309488A true GB2309488A (en) 1997-07-30

Family

ID=10787668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9601664A Withdrawn GB2309488A (en) 1996-01-27 1996-01-27 Vehicle security arrangement

Country Status (1)

Country Link
GB (1) GB2309488A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6445083B2 (en) 1998-08-10 2002-09-03 Mannesmann Vdo Ag Method and device for controlling a power adjustment means of a vehicle engine
CN101770660A (en) * 2009-12-31 2010-07-07 上海量科电子科技有限公司 Identification key of radio-frequency antenna

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607312A (en) * 1982-08-24 1986-08-19 Barreto Mercado William Radio control security system for automobile doors, trunk and hood locks and engine power
EP0354102A1 (en) * 1988-07-29 1990-02-07 Regie Nationale Des Usines Renault Electronic anti-theft system for a motor vehicle
GB2227791A (en) * 1988-12-02 1990-08-08 Rover Group Vehicle security system
EP0395596A2 (en) * 1989-04-28 1990-10-31 Autonix S.R.L. An improved anti-theft system, particularly for motor vehicles
GB2265415A (en) * 1992-03-23 1993-09-29 * Rondish Company Limited Preventing unauthorised use of engines.
EP0658672A2 (en) * 1993-12-17 1995-06-21 Kabushiki Kaisha Tokai Rika Denki Seisakusho Automobile engine starter
WO1995022475A1 (en) * 1994-02-17 1995-08-24 Rover Group Limited Vehicle security system
GB2289719A (en) * 1994-05-26 1995-11-29 Rover Group Vehicle security system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607312A (en) * 1982-08-24 1986-08-19 Barreto Mercado William Radio control security system for automobile doors, trunk and hood locks and engine power
EP0354102A1 (en) * 1988-07-29 1990-02-07 Regie Nationale Des Usines Renault Electronic anti-theft system for a motor vehicle
GB2227791A (en) * 1988-12-02 1990-08-08 Rover Group Vehicle security system
EP0395596A2 (en) * 1989-04-28 1990-10-31 Autonix S.R.L. An improved anti-theft system, particularly for motor vehicles
GB2265415A (en) * 1992-03-23 1993-09-29 * Rondish Company Limited Preventing unauthorised use of engines.
EP0658672A2 (en) * 1993-12-17 1995-06-21 Kabushiki Kaisha Tokai Rika Denki Seisakusho Automobile engine starter
WO1995022475A1 (en) * 1994-02-17 1995-08-24 Rover Group Limited Vehicle security system
GB2289719A (en) * 1994-05-26 1995-11-29 Rover Group Vehicle security system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6445083B2 (en) 1998-08-10 2002-09-03 Mannesmann Vdo Ag Method and device for controlling a power adjustment means of a vehicle engine
CN101770660A (en) * 2009-12-31 2010-07-07 上海量科电子科技有限公司 Identification key of radio-frequency antenna
CN101770660B (en) * 2009-12-31 2015-12-02 上海量科电子科技有限公司 A kind of identification key of radio-frequency antenna

Also Published As

Publication number Publication date
GB9601664D0 (en) 1996-03-27

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)