WO1998040251A1 - Module de commande de demarrage d'un materiel - Google Patents

Module de commande de demarrage d'un materiel Download PDF

Info

Publication number
WO1998040251A1
WO1998040251A1 PCT/JP1998/000925 JP9800925W WO9840251A1 WO 1998040251 A1 WO1998040251 A1 WO 1998040251A1 JP 9800925 W JP9800925 W JP 9800925W WO 9840251 A1 WO9840251 A1 WO 9840251A1
Authority
WO
WIPO (PCT)
Prior art keywords
key
coil
antenna
key cylinder
ignition
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/JP1998/000925
Other languages
English (en)
Japanese (ja)
Inventor
Kouji Koga
Keiji Yamamoto
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of WO1998040251A1 publication Critical patent/WO1998040251A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • G07C2009/00777—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 induction

Definitions

  • the present invention relates to a device start control device, and more particularly to a device for stopping the start of a device when an operation for starting the device is performed by using an incorrect key, an illegal circuit change, or the like.
  • a vehicle anti-theft device that interlocks with an ignition key and prohibits the start of the engine when a correct ignition key is not used.
  • this vehicle anti-theft device as shown in FIG. 7, between a transbonder 2 including a communication coil provided inside an ignition key 1 and an antenna coil 4 provided on a key cylinder 3 side. To communicate and give and receive a PIN code. When the password set inside the ignition key 1 matches with the vehicle code, the engine can be driven.
  • the antenna coil 4 is wound around the front surface of the key cylinder 3 so that the key cylinder 3 acts as a core. Therefore, the ignition key 1 is located on the center line of the coil having the strongest magnetic field strength due to the antenna coil 4. Then, the magnetic field lines passing through the inside of the antenna coil 4 pass through the ignition key 1, and effective communication between the trans- bonder 2 and the antenna coil 4 is achieved.
  • Such a device is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 7-61325.
  • the magnetic permeability of the antenna coil cannot be made so high.
  • the coil wound on the resin case The radius of the antenna coil 4 increases because it is mounted on the cylinder. Therefore, the Q of the antenna coil 4 (two wL / R: ⁇ is the angular frequency of the radio wave, L is the inductance of the coil, and R is the electric resistance of the coil) is small. Therefore, in order to obtain a sufficient magnetic field strength, there is a problem that the number of windings of the coil is increased and the size is increased.
  • the ignition key 1 has a key plate la and a key body 1b, and the transbonder 2 is usually embedded in the side of the key body lb. That is, the key plate la is made of metal due to strength problems and is relatively thin. On the other hand, in order to incorporate the transbonder 2, it must have a certain thickness, and in order to allow magnetic flux to pass through the key coil inside the transbonder 2, the key body 1b is made of synthetic resin. There is a demand to form. If these requirements are satisfied, the key plate 1a occupies the center of the key body 1b, and the transbonder 2 must be arranged on the side of the key body 1b.
  • the magnetic field strength inside the transbonder 2 becomes weaker, and the antenna coil 4 becomes larger in order to perform sufficient communication with the antenna coil 4. was there. Furthermore, although the antenna coil 4 is formed as a separate member from the key cylinder 3, the shape of the key cylinder 3 is diversified, and there is a problem that the antenna coil 4 cannot be shared.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a device start control device capable of performing effective communication between a key side and a vehicle side.
  • the present invention relates to a device start control device for controlling whether or not to permit device start by communication between a key side and a key cylinder side, wherein a plurality of antenna coils are arranged around a key hole of a key cylinder. It is characterized by having done.
  • a plurality of antenna coils are arranged around a single hole. Therefore, one of the plurality of antenna coils is easily arranged close to the key, and the magnetic field lines generated by the antenna coil easily pass through the side of the key.
  • a coil embedded on the base (key body) side of the key is used as the key side antenna, but this coil is located on the side of the key body. There are many. Therefore, the antenna coil is easily located close to the key side coil, and effective communication can be performed between the key side and the key cylinder side.
  • the present invention is characterized in that the plurality of antenna coils are formed so as to protrude from around the key hole of the key cylinder. Protruding makes it easier to form multiple antenna coils.
  • the plurality of antenna coils are wound around a plurality of bar-shaped magnetic core portions extending in a direction substantially parallel to the key insertion direction from around the key insertion portion of the key cylinder. It is characterized by the following. As described above, since the coil is formed by being wound around the rod-shaped magnetic core, the magnetic permeability of the core can be increased, the size can be easily reduced, and the communication between the key and the key cylinder can be suitably performed. Can be performed.
  • the plurality of antenna coils are formed independently of each other, and are fixed to the key cylinder and connected in series by wiring provided on the key cylinder side. .
  • the versatility of the antenna coil can be increased. Also, fixing the antenna coil to the key cylinder in the form of a socket facilitates the fixing work. Furthermore, the inductance can be adjusted by adjusting the number of antenna coils.
  • FIG. 1 is a block diagram showing the overall configuration.
  • FIG. 2 is a diagram showing a schematic configuration of the embodiment.
  • FIG. 3 is a front view of the embodiment.
  • FIG. 4 is a diagram showing a configuration of the antenna coil.
  • FIG. 5 is a diagram showing a configuration of another embodiment.
  • FIG. 6 is a diagram showing a configuration of still another embodiment.
  • FIG. 7 is a diagram showing a conventional configuration.
  • FIG. 1 is a diagram showing an overall configuration of an example of a vehicle anti-theft device using the device start control device according to the present embodiment.
  • a transbonder 12 is built in the ignition key 110 which is also used for opening and closing the door opening of a car.
  • the transformer bonder 12 includes a key coil, a power supply circuit, a storage unit, a readout circuit, a transmission circuit, and the like.
  • the transbonder 12 Upon receiving a predetermined radio wave from the outside, the transbonder 12 receives the radio wave with a key coil and supplies it to a power supply circuit.
  • the power supply circuit obtains power from received radio waves and supplies power to internal circuits. Then, the security code stored in the storage unit is read out and transmitted from the key coil via the transmission circuit.
  • the ignition key 10 is composed of a metal key plate 10 a and a synthetic resin key body 10 b, and the base of the key plate 10 a is a keyboard 10. Occupies the central part of 0b. Therefore, the transbonder 12 is built in the side of the keyboard 10b. Although not shown, the key coil of the transbonder 12 is wound so that its axis extends in a direction parallel to the key plate 1a. Is generated.
  • the key cylinder 14 is rotatable by an ignition key 10 having a predetermined shape (or storing predetermined magnetic information or the like).
  • an accessory switch is provided depending on its rotational position.
  • Various switches such as an ignition switch, a switch and a switch are operated. That is, the accessory switch switches the power of the accessory device on and off, the ignition switch switches the power of the devices necessary for traveling such as the ignition plug on and off, and the switch switch turns the power of the starter switch on and off. Is controlled.
  • rotation is possible only when the tip of the inserted ignition key 1 ⁇ matches the key cylinder 14.
  • the ignition key 10 is inserted and removed from the key cylinder 14 at the lock position.c
  • a plurality of antennas are provided around the key hole on the front side of the key cylinder 14 where the ignition key 10 is inserted.
  • Coil 16 is provided.
  • a predetermined radio wave is transmitted from the antenna coil 16 to the transbonder 12, and a radio wave from the transbonder 12 is received by the antenna coil 16.
  • An immobilizer ECU 20 is connected to the antenna coil 16 via an amplifier 18 for amplifying a received signal.
  • the immobilizer ECU 20 stores therein a reference code corresponding to the password of the ignition key 110 therein. Then, the immobilizer ECU 20 determines whether or not the password code transmitted from the transbonder 12 via the antenna coil 16 matches the reference code stored therein.
  • the engine ECU 24 is connected to the immobilizer ECU 20 via a communication line.
  • the engine ECU 24 controls an ignition (spark plug) section 26 and a fuel injection (fuel supply) section 28.
  • the ignition section 26 and the fuel injection section 28 are connected to the engine, and control ignition and fuel supply of the engine by these. Therefore, the immobilizer ECU 20 controls whether to start the engine via the engine ECU 24.
  • the engine ECU 24 makes the power supply to the spark plug and the fuel supply to the engine possible according to the ignition on by the rotation of the key cylinder 14, Evening mode In accordance with the rotation of the engine in accordance with the rotation of the evening, predetermined ignition and fuel supply are performed, and ignition and fuel supply are continued after the engine starts and starts to rotate.
  • the security code and the reference code cannot be obtained in the immobilizer ECU 20 and the engine is prohibited from starting, the plug ignition by the ignition unit 26 and the fuel injection unit 28, Fuel supply is prohibited and engine start is prohibited.
  • antenna coils 16 are provided. That is, as shown in FIG. 2, three antenna coils 16 are provided at the upper part and three at the lower part in the peripheral part of the front surface of the key cylinder 14.
  • antenna coil 16 is the key of key cylinder 14 It is arranged corresponding to the rotation position of the hole 14a. That is, when the ignition key 10 is in the lock position, the key hole 14a is on the line connecting the first pair of antenna coils 16 and the ignition key 10 is in the accessory position (A cc). When the ignition key 10 is at the ignition position (IG), the key hole 14a is on the third pair when the key hole 14a is on the line connecting the antenna coils 16 of the second pair. It is on the line connecting the antenna coils 16. As a result, even if the ignition key 10 is inserted into the key cylinder 14 while the transbonder 12 is in one of the upper and lower positions, and the ignition key 10 is rotated, the transponder 1 It will be located close to any of coils 16.
  • the corresponding antenna coil 16 was not provided when the ignition key 10 was at the nighttime position. This is because the battery voltage becomes unstable when starting up overnight, and accurate communication is often not possible, and the communication is normally terminated before the start of the star. However, a pair of 16 pairs may be provided at the star evening position.
  • 16 is formed by winding a conductor 16b around a cylindrical magnetic core 16a.
  • the magnetic core 16a is formed of a magnetic material such as a ferrite, and one end is fixed to the key cylinder 14 by bonding, screwing, or the like.
  • the six antenna coils 16 are connected in series by sequentially connecting the conductors 16b. Accordingly, a similar magnetic field is generated from the six antenna coils 16, but one magnetic field acts on the adjacent transbonder 12 to impart energy. Then, one of the antenna coils 16 receives the password from the transponder 12.
  • At least one antenna coil 16 is located at a position close to the transbonder 12. Accordingly, suitable magnetic coupling between the transbonder 12 and the antenna coil 16 can be achieved, and reliable energy transmission and password communication can be performed.
  • the magnetic core 16a made of ferrite or the like is used, the magnetic permeability can be increased, the number of coil turns can be reduced, and the size can be reduced. Sa Furthermore, since the number of coil windings is small, the resistance can be reduced, and the antenna coil 16 Q
  • the volume per one coil becomes extremely small, and the degree of freedom in mounting to the key cylinder 14 is improved.
  • the antenna coil 16 was made parallel to the direction of insertion of the ignition key 10, but the angle was slightly changed to adjust the directivity, and the transbonder 12 was positioned at the position where the radio wave intensity was the strongest. Is preferred. This improves communication performance.
  • the magnetic core 16a may be fixed to the front surface of the key cylinder 14, the same magnetic core 16a can be used regardless of the shape of the key cylinder 14.
  • FIG. 5 shows another embodiment.
  • the antenna coil 16 has its lower part accommodated in the socket 30 and the conductor 16 b of the antenna coil 16. Are connected to a pair of legs 30a of the socket 30. Therefore, a socket 32 for connecting to the socket 30 is provided on the front surface of the key cylinder 14 and the antenna 30 is fixed and electrically connected by inserting the socket 30 into the socket 32. be able to. Therefore, six sockets 32 are formed around the front surface of the key cylinder 14 so as to connect the antenna coil 16 in series, and electrical sockets are formed therein. By accommodating the antenna coil 16 having the antenna coil, installation of the six antenna coils 16 can be completed.
  • the antenna coil 16 itself can be made exactly the same, the versatility of the antenna coil 16 can be improved, and a mass production effect can be obtained.
  • the inductance correction required when using a common socket shape between different vehicle types can be handled by adding or reducing the number of antenna coils 16.
  • the inductance can be corrected by adjusting the number of windings in one antenna coil 16 by using five in common.
  • FIG. 6 shows still another embodiment.
  • the pair of antenna coils 16 is made sufficiently long. In this way, the signature Since the antenna coil 16 is located immediately beside the key 10, more reliable communication can be performed. In this case, it is preferable that the pair of antenna coils 16 be rotated together with the ignition key 10. As a result, the antenna coil 16 can always be maintained at a position close to the transbonder 12 without obstructing the operation of the ignition key 10.
  • the present invention is not limited to this example, and it is also preferable that the antenna coil 16 is paired and rotated with the rotation of the ignition key 10.
  • the device start control device of the present invention is mounted on a vehicle, and is used to control permission / non-permission of a vehicle-mounted device, for example, start.

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

Selon l'invention, on assure une communication entre un répondeur d'identification (12) incorporé dans une clé de démarrage (10) et une pluralité de bobines d'antennes (16) placées sur un côté d'un barillet (14) de clé. On a monté ces bobines d'antenne (16) de façons que ces bobines (16) puissent saillir de la section périphérique de la face antérieure du barillet (14) de la clé. Ces bobines (16) sont formées d'un enroulement de conducteurs autour d'un noyau magnétique. Etant donné que lors de l'introduction de la clé dans le barillet (14), l'une quelconque de ces bobine (16) va se trouver située plus près du répondeur d'identification (12) incorporé dans la section latérale de la clé (10) de démarrage, la communication entre le répondeur d'identification (12) et la bobine (16) va pouvoir s'effectuer de manière idéale.
PCT/JP1998/000925 1997-03-11 1998-03-06 Module de commande de demarrage d'un materiel Ceased WO1998040251A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9/56484 1997-03-11
JP5648497 1997-03-11

Publications (1)

Publication Number Publication Date
WO1998040251A1 true WO1998040251A1 (fr) 1998-09-17

Family

ID=13028385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/000925 Ceased WO1998040251A1 (fr) 1997-03-11 1998-03-06 Module de commande de demarrage d'un materiel

Country Status (1)

Country Link
WO (1) WO1998040251A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393649A (ja) * 1986-10-07 1988-04-23 Tokai Rika Co Ltd 車両用キ−装置
JPH0644657U (ja) * 1992-11-27 1994-06-14 株式会社カンセイ キー装置
JPH06173510A (ja) * 1992-12-04 1994-06-21 Kansei Corp キー装置
JPH06263009A (ja) * 1993-03-12 1994-09-20 Kansei Corp キー装置
JPH09165951A (ja) * 1995-10-09 1997-06-24 Kansei Corp 車両用キー装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393649A (ja) * 1986-10-07 1988-04-23 Tokai Rika Co Ltd 車両用キ−装置
JPH0644657U (ja) * 1992-11-27 1994-06-14 株式会社カンセイ キー装置
JPH06173510A (ja) * 1992-12-04 1994-06-21 Kansei Corp キー装置
JPH06263009A (ja) * 1993-03-12 1994-09-20 Kansei Corp キー装置
JPH09165951A (ja) * 1995-10-09 1997-06-24 Kansei Corp 車両用キー装置

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