JP2007051453A - Vehicular keyless device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular keyless device capable of improving convenience and security. <P>SOLUTION: This vehicular keyless device 1 has a transmission part 24 transmitting a search radio wave of a portable machine 3, a receiving part 23 receiving a response radio wave to the search radio wave, a microcomputer 21 outputting a locking signal and an unlocking signal by an authentication result by performing authentication by an ID code transmitted from the portable machine 3 and the portable machine 3 having a receiving part 34 receiving the search radio wave and a transmission part 32 transmitting information to a vehicle when receiving the search radio wave. The portable machine 3 is arranged in a plurality to an on-vehicle machine 2. The portable machine 3 has an identification information table 251 identifying the mutual portable machines. The on-vehicle machine 2 has a communication interface 22 communicating with a plurality of vehicle devices. The microcomputer 21 outputs a control signal for limiting operation and use of the vehicle devices in response to an identification result by identification information transmitted from the portable machine 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to a technical field of a vehicle keyless device that locks and unlocks a door without performing a key operation by authentication of a portable device.

Conventionally, it consists of a portable device (or card) that can be carried around with an in-vehicle unit. When you approach the vehicle with the portable device, authentication is performed by wireless communication, the door is unlocked, and the keyless entry is locked when you leave. In the system, power consumption is reduced (see, for example, Patent Document 1).
JP 2001-227218 A (page 2-12, all figures)

  However, in the past, when there are a plurality of portable devices, there is a problem in security when renting the portable device to another person.

  The present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide a vehicle keyless device that can improve convenience and security.

  In order to achieve the above object, in the present invention, authentication is performed by a vehicle-side transmission unit that transmits a search radio wave of a portable device, a vehicle-side reception unit that receives a response radio wave to the search radio wave, and an ID code transmitted from the portable device. An authentication unit that outputs a lock signal and an unlock signal according to an authentication result, a portable side reception unit that receives the search radio wave, and a portable side transmission unit that transmits information to the vehicle when the search radio wave is received. A vehicle keyless device having a plurality of portable devices with respect to the in-vehicle device, wherein the portable device includes identification information for identifying between the portable devices, and the in-vehicle device includes a plurality of vehicles. Limiting means for outputting a control signal for limiting the operation and use of the vehicle device according to the identification result by the identification information transmitted from the portable device and the identification information transmitted from the portable device Characterized in that it comprises a and.

  Therefore, in the present invention, convenience and security can be improved.

  Hereinafter, an embodiment for realizing a vehicle keyless device according to the present invention will be described based on a first embodiment corresponding to the first and second aspects of the present invention.

First, the configuration will be described.
FIG. 1 is a block diagram of an in-vehicle device of a vehicle keyless device. FIG. 2 is a block diagram of a portable device of the vehicle keyless device.
The vehicle keyless device 1 according to the first embodiment includes an in-vehicle device 2 and a portable device 3 as main components.
The in-vehicle device 2 mainly includes a microcomputer 21, a communication interface 22, a receiving unit 23, a transmitting unit 24, an EEPROM 25, a RAM 26, and an antenna 27.
The microcomputer 21 performs communication control with a portable device, ID authentication, portable device number identification processing, and the like, and outputs a control signal to an external vehicle device.
The communication interface 22 is an interface between the microcomputer 21 inside the in-vehicle device 2 and an external vehicle device.
The receiving unit 23 receives a radio signal from the portable device 3 using the antenna 27, converts it into an information signal for the microcomputer 21, and outputs it to the microcomputer 21.
The transmission unit 24 converts an information signal from the microcomputer 21 to the portable device 3 into a radio wave signal and transmits it using the antenna 27.
The EEPROM 25 stores programs, data with little rewriting, and the like.
The RAM 26 temporarily stores data and the like.
The antenna 27 is used for transmission / reception of radio signals with the portable device 3. In-vehicle use and external use may be provided separately. Further, a transmission antenna and a reception antenna may be provided separately. In that case, the receiving unit 23 and the transmitting unit 24 may be provided for in-vehicle use and for in-vehicle use, respectively.

The portable device 3 has a control unit 31, a transmission unit 32, a transmission antenna 33, a reception unit 34, and a reception antenna 35 as main components.
The control unit 31 includes, as data, an individual ID code for each vehicle and an individual identification number between the portable devices 3, and performs communication with the in-vehicle device.
The transmission unit 32 converts the information signal from the control unit 31 into a radio wave signal using the transmission antenna 33 and transmits it to the in-vehicle device 2.
The receiving unit 34 receives a radio wave signal from the in-vehicle device 2 using the receiving antenna 35, converts it into an information signal, and outputs it to the control unit 31.

Furthermore, as shown in FIG. 1, the in-vehicle device 2 is connected to a plurality of vehicle devices through a communication interface 22.
The communication interface 22 communicates with the electrical control unit 4, the engine control unit 5, and the display operation control unit 6. Thus, the left door actuator 41, the right door lock actuator 42, the trunk lock actuator 43, the glove box actuator 44, and the shift lock actuator 45 connected to the electrical control unit 4 are controlled. Further, the AV navigation unit 61, the display 62, and the operation switch 63 connected to the display operation control unit 6 are controlled.

Next, the identification information table 251 stored in advance in the EEPROM 25 will be described as a configuration.
FIG. 3 is an explanatory diagram showing an example of the identification information table.
In FIG. 3, authority assigned to each portable device 3 by 8-bit data, that is, operation and use restrictions are assigned to each bit. In other words, bit 0 allows engine start, bit 1 unlocks the trunk, bit 2 unlocks the glow box, bit 3 allows shift lock release, bit 4 allows navigation system setting changes, bit 5 is empty, and bit 6 is empty Bit 7 is assigned as door unlocking.
On the other hand, all of the portable device 3 is permitted in No. 0, and in No. 1, engine start, shift lock release, and door lock unlocking are permitted. For example, if the permission is 1 and the non-permission is 0, the 8-bit data of the mobile device 3 of the number 0 is 10011111, and the number 1 is 10001001.

Next, the operation will be described.
[About mobile devices]
Here, the portable device in the vehicle keyless device will be described.
Vehicles are often used by multiple people, such as families and companies. In addition, there are cases where the portable device breaks down or is lost. For this reason, there are often a plurality of portable devices including a spare.

In such a vehicle keyless device, for example, in the case of vehicle maintenance or inspection, the portable device 3 must be lent to another person. In such a case, the security of a vehicle will fall depending on the handling.
In addition, when used by multiple people, the privacy of the original user may not be protected.
In the first embodiment, such a problem is solved.

[Mobile device identification processing and use operation restriction processing]
FIG. 4 is a flowchart showing the flow of the portable device identification process and the use operation restriction process executed by the in-vehicle device of the vehicle keyless device according to the first embodiment. Each step will be described below.

  In step S11, it is determined whether the common ID code authentication is established in the vehicle. If the authentication is established, the process proceeds to step S12. If the authentication is not established, the process proceeds to step S13.

  In step S12, it is determined whether or not already authenticated. If it has been authenticated, the process proceeds to step S13, and if not authenticated, the process proceeds to step S14.

  In step S13, communication output of the vehicle-mounted device 2 is performed so as to release the door lock.

  In step S14, the authority flag (8-bit data described above) is cleared (Flg = 00000000).

  In step S15, it is determined whether or not there is a number 0 portable device 3 in the authenticated portable device 3. If number 0 exists, the process proceeds to step S16, and if there is no number 0, the process proceeds to step S17.

  In step S16, an authority flag is set (Flg = 10011111).

  In step S17, it is determined whether or not there is the number 1 portable device 3 among the authenticated portable devices 3, and if there is a number 1, the process proceeds to step S18, and if there is no number 1, the process proceeds to step S19.

  In step S18, an authority flag is set (Flg = 10001001).

  In step S19, it is determined whether or not there is a portable device 3 of number 2 among the authenticated portable devices 3, and if there is a number 2, the process proceeds to step S20, and if there is no number 2, the process proceeds to step S21.

  In step S20, an authority flag is set (Flg = 10000110).

  In step S21, it is determined whether or not there is the number 3 portable device 3 among the authenticated portable devices 3, and if there is a number 3, the process proceeds to step S22, and if there is no number 2, the process proceeds to step S23.

  In step S22, an authority flag is set (Flg = 10000000).

  In step S23, use or operation corresponding to the authority flag is restricted. That is, the control corresponding to the bit being “1” is permitted, and the control corresponding to the bit being “0” is prohibited.

  In step S24, the authority flag is cleared and the process ends.

[Function to improve convenience and security]
Communication between the vehicle-mounted device 2 and the portable device 3 in the vehicle keyless device 1 of the first embodiment will be described with reference to FIG.
FIG. 5 is a time chart of authentication communication of the vehicle keyless device according to the first embodiment.
First, the in-vehicle device 2 transmits, as a search radio wave, a wake-up signal that prompts activation and an individual ID code for each vehicle to the portable device 3.
Next, each portable device 3 existing within the reach of the search signal transmits an ACK, that is, a response signal and an ID code to the in-vehicle device 2.

The in-vehicle device 2 outputs a data transmission request to the portable device 3 by receiving the ACK and the ID code from the portable device 3.
Each portable device 3 that has received this signal transmits the response signal, the ID code, and the data of the portable device number to the in-vehicle device 2 according to the time schedule shown as window 1 to window 4 in FIG.

In the in-vehicle device 2, an authority flag corresponding to the number of the portable device 3 is set by the processing of steps S <b> 15 to S <b> 23.
In this state, when a person holding the portable device 3 approaches the vehicle, the door lock is unlocked by authentication, so that the user can get into the vehicle. In this state, for example, a person who has the portable device 3 of No. 2 cannot start the engine and release the shift lock unless the person of No. 0 or No. 1 is authenticated nearby. Further, the setting of the navigation system cannot be changed unless the person with number 0 is nearby. Thus, security is improved and convenience is improved when it is necessary to ask a person to only take out the luggage in the vehicle.

In addition, by having the mobile device 3 of No. 1 used for vehicle maintenance and inspection, etc., it is not permitted to unlock the trunk or the glow box, thereby improving security and convenience. improves. In this case, privacy is also maintained.
Furthermore, since the use and operation restrictions can be changed, the convenience and security can be further improved by performing the setting according to the situation.

  Also, even if the driver leaves the vehicle with the engine running for a restroom, and the passenger remains in the vehicle, the passenger can enter and leave the passenger by holding the portable device 3 of number 3. It is very preferable that the vehicle is free and the shift lock cannot be released because a shift operation by a person other than the driver is unexpectedly performed and a start without an intention to operate does not occur.

Further, even when the child holds the portable device 3, it is very advantageous not to allow the engine operation or the shift operation.
Further, by lowering the authority other than the driver, the security when the rented portable device 3 is lost is improved.

Explain the effect. The vehicle keyless device according to the first embodiment has the following effects. Each effect corresponds to a claim.
(1) Authentication is performed by a transmission unit 24 that transmits a search radio wave of the portable device 3, a reception unit 23 that receives a response radio wave to the search radio wave, and an ID code transmitted from the portable device 3, and a lock signal and In a vehicle keyless device 1 having a portable device 3 including a microcomputer 21 that outputs an unlock signal, a receiving unit 34 that receives a search radio wave, and a transmission unit 32 that transmits information to the vehicle when the search radio wave is received. A plurality of portable devices 3 are provided for the in-vehicle device 2, the portable device 3 includes an identification information table 251 for identifying between the portable devices, and the in-vehicle device 2 includes a communication interface 22 for communicating with a plurality of vehicle devices. The microcomputer 21 outputs a control signal for restricting the operation and use of the vehicle device according to the identification result based on the identification information transmitted from the portable device 3. It can be improved Kyuriti property.

  (2) Since the identification information table 251 is stored in the EEPROM 25 so that the contents of restriction according to the identification result of the portable device 3 can be changed, the convenience and security can be further improved.

As mentioned above, although the vehicle keyless apparatus of this invention has been demonstrated based on Example 1, it is not restricted to these Examples about concrete structure, The summary of the invention which concerns on each claim of a claim As long as they do not deviate, design changes and additions are permitted.
In the embodiment, the processing using the identification data table is performed, but the processing may be performed by other processing. For example, an expression using an arithmetic expression or the like may be used.
Although the authority flag is used in the embodiment, it may be based on other processing.
The in-vehicle device and the vehicle device may be directly connected by a signal line.
The RAM and EEPROM of the in-vehicle device may be provided inside the microcomputer.

  The vehicle keyless device of the present application is easy to use for a moving body, and is easy to use as long as it is in a relationship between a stationary machine and a mobile machine whose position is almost stable.

It is a block diagram of the vehicle-mounted apparatus of the vehicle keyless apparatus of Example 1. FIG. It is a block diagram of the portable machine of the vehicle keyless device of Example 1. It is explanatory drawing which shows the example of the identification information table of the vehicle keyless apparatus of Example 1. FIG. It is a flowchart which shows the flow of the portable device identification process and use operation restriction | limiting process which are performed with the vehicle equipment of the vehicle keyless apparatus of Example 1. FIG. It is a time chart of the authentication communication of the vehicle keyless apparatus of Example 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle keyless apparatus 2 In-vehicle machine 21 Microcomputer 22 Communication interface 23 Receiving part 24 Transmitting part 25 EEPROM
251 Identification information table 26 RAM
27 antenna 3 portable device 31 control unit 32 transmission unit 33 reception unit 33 transmission antenna 34 reception unit 35 reception antenna 4 electrical control unit 41 left door actuator 42 right door lock actuator 43 trunk lock actuator 44 glove box actuator 45 shift lock actuator 5 engine Control unit 6 Display operation control unit 61 Navigation unit 62 Display 63 Operation switch

Claims (2)

Vehicle-side transmission means for transmitting a portable device search radio wave;
Vehicle-side receiving means for receiving a response radio wave to the search radio wave;
Authentication means for performing authentication with an ID code transmitted from a portable device, and outputting a lock signal and an unlock signal according to an authentication result;
Mobile-side receiving means for receiving the search radio wave;
Mobile-side transmission means for transmitting information to the vehicle when receiving the search radio wave;
A portable device comprising:
In a vehicle keyless device having
A plurality of the portable devices are provided for the in-vehicle device,
The portable device includes identification information for identifying between portable devices,
The in-vehicle device is
Communication means for communicating with a plurality of vehicle devices;
Limiting means for outputting a control signal for limiting the operation and use of the vehicle device according to the identification result by the identification information transmitted from the portable device;
Comprising
A vehicle keyless device. The vehicle keyless device according to claim 1,
Provided a change means to change the content of the restriction according to the identification result of the portable device,
A vehicle keyless device.

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