JPH08218699A - Unlocking control device for vehicle locking mechanism and its portable unit - Google Patents

Abstract

PURPOSE: To make a card unusable through a simple operation in the case of loss and theft by providing an antenna, a fixed type password code memory section and a controller, and also by providing a controller with a reception control section and an unlocking control section, a password code renewing section and a transmission control section and also by providing a an unlocking control section; with a renew type password code initializing function. CONSTITUTION: An unlocking control section 16 compares a renew type password code housed in a renew type recitation code memory section 17 with a renew type password code from a reception control section 14, and in the case of inconsistency, controls the unlocking. A portable card whose renew type password code is inconsistent is made unusable. In addition, a password code renewing section 15 renews the renew type password code into another value at every time of unlocking and locking controls, and a transmission control section 13 transmits and controls the above value to the portable card. Thus a different code can always be set up as a password code. When the unlocking control section 16 receives a reset signal, the password code is initialized. The renew type password code of an unlocking control device 10 and that of a portable unit are therefore different in value. Thus a lost card becomes unusable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unlocking control device and a portable unit, and more particularly to an unlocking control device and a portable unit for a vehicle lock mechanism for controlling locking and unlocking of a vehicle door lock or the like. Regarding

Further, it is applied to unlock control of a lock mechanism used for entering and leaving a condominium or a laboratory.

[0003]

2. Description of the Related Art The conventional keyless entry system is
Just by carrying a card that has a PIN code, pressing the door switch or trunk switch allows the controller in the vehicle to communicate with the card, and locks the door or trunk only when there is a card with the correct PIN code. , Unlocking. Such a method is described, for example, in Car Technology, 1989, MAY, 44 p. 4 to p. 9
Is disclosed in.

[0004]

However, in such a conventional example, when a portable card is stolen or dropped and picked up, there is a disadvantage that the card is locked and unlocked. .

Therefore, if the portable card is lost or stolen, a new card and a PIN code pack are required, and the PIN code pack of the in-vehicle keyless entry controller must be replaced. .

Further, there is an inconvenience that the portable card must be carried with the key.

[0007]

OBJECTS OF THE INVENTION The present invention improves the problems of the prior art, and in particular, when the portable unit is lost or stolen,
It is an object of the present invention to provide an unlocking control device for a vehicle lock mechanism and a portable unit that can disable a lost portable unit by a simple operation.

[0008]

In view of the above, the present invention provides, as a specific means, an antenna for transmitting and receiving a radio signal such as a secret code having a fixed value, and a fixed secret code in which the secret code having the value is stored in advance. The storage unit is compared with the fixed security code received by the antenna and the fixed security code stored in the fixed security code storage unit, and if they do not match, a control means for canceling unlock control such as door lock and the like. Is equipped with. Moreover, the control means includes a reception control unit that controls reception of a predetermined update-type PIN code, an update-type PIN code storage unit that stores the received update-type PIN code for each sender, and an update-type PIN from the reception control unit. An unlock control unit that controls the unlocking of the door lock and the like only when the PIN code and the update PIN code stored in the update PIN code storage unit are compared, and the door lock is unlocked. The personal identification code updating unit that updates the renewal type personal identification code every time the control is performed, and the transmission control unit that controls transmission of the updated renewal type personal identification code by wireless communication. The unlocking control device is configured to have an update-type PIN code initialization function that initializes the update-type PIN code corresponding to the reset signal when the reset signal is received.

As a means for making the main part the same as this specific means, the renewal type PIN code is composed of numerical values, and the PIN code updating section has a counter function for incrementing the renewal type PIN code by one. An unlocking control device having a configuration is adopted.

Further, as specific means, industrial application fields, and means to be solved are the same, an antenna for transmitting and receiving a radio signal such as a personal identification code and a fixed pre-stored personal identification code having a fixed value. A type personal identification code storage section,
The fixed-type personal identification code and the like are controlled and transmitted at a predetermined timing. Moreover, the fixed-type personal identification code storage unit is provided with an update-type personal identification code storage unit that stores a predetermined renewal-type personal identification code, and the control means controls reception of the predetermined renewal-type personal identification code transmitted by a radio signal. A mobile phone having a configuration including a reception control unit for storing the renewal type PIN code storage unit and a transmission control unit for controlling transmission of the fixed type PIN code and the renewal type PIN code stored in the renewal type PIN code storage unit. Is taking a unit for.

The present invention aims to achieve the above-mentioned object by these means.

Here, the vehicle lock mechanism means a lock arranged in each part of the vehicle such as a door lock and a trunk lock.

[0013]

In the unlocking control of the vehicle door lock and the like, first, the antenna captures the fixed type secret code transmitted from the portable unit, and then the control means fixes the fixed type secret code received by the antenna with the fixed type secret code. The fixed type secret code stored in the type secret code code storage unit is compared, and if they do not match, the door lock or the like is controlled not to be unlocked. further,
Since the predetermined renewal type identification code is transmitted from the portable unit, the reception control unit controls the reception and outputs the renewal type identification code to the unlocking control unit.

The unlocking control unit compares the renewal type secret code stored in the renewal type secret code storage unit with the renewal type secret code from the reception control unit. When the renewal type secret codes match, unlock control such as door lock is performed, and when they do not match, control is performed not to unlock door lock.

When the control for unlocking the door lock or the like is performed by the unlocking control unit, that is, when the renewal-type personal identification code from the portable card is correct, the personal identification code updating unit updates the renewal. The type personal identification code is updated to another value and stored in the updated type personal identification code storage unit. In addition, the transmission controller controls the transmission of the updated new renewal type identification code, and the radio code is transmitted from the antenna.

This new renewal type secret code is used for the next unlocking control. Further, when the renewal-type personal identification code is constituted by a numerical value, the personal identification card updating means increments the renewal-type personal identification code by one by the counter function for each unlocking control.

On the other hand, when unlocking the portable card, the control means first sends both the secret code stored in the fixed type secret code storage section and the renewal type secret code storage section in the portable card. Control. The fixed type secret code and the renewal type secret code are transmitted from the antenna to the antenna of the unlocking control device as radio signals.

In the unlocking control device, unlocking control such as door lock is performed by comparing these secret codes, and when each secret code coincides with each secret code of the unlocking control device, the door lock is unlocked. Locked. When the door lock or the like is unlocked, a new renewal PIN code is transmitted from the unlocking control device. Therefore, in the portable unit, the reception control unit receives the updated renewal PIN code and updates it. Stored in the secret code storage. This new renewal PIN code will be used in the next unlock control.

When the portable card is lost or stolen, the portable card is controlled so that it cannot be used. For this, first, the unlocking control device receives a reset command from a reset switch or the like in the vehicle. Then
The unlocking control unit initializes the renewal type secret code when receiving the reset signal. Then, even if an attempt is made to unlock the door lock or the like by the lost portable unit, the renewal type secret code is different and the unlocking is not performed.

[0020]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an unlocking control device according to this embodiment. The unlock control device 10 includes an antenna 11 for transmitting and receiving a wireless signal such as a secret code having a fixed value, a fixed type secret code storage unit 18 in which a secret code having the value is stored in advance, and a fixed type received by the antenna 11. When the personal identification code and the fixed personal identification code stored in the fixed personal identification code storage unit 18 are compared and if they do not match, the unlocking control of the door lock 31 and the like is stopped to maintain the lock state. Is equipped with.

In addition, the control means 12 controls the reception control section 14 for receiving and controlling a predetermined renewal type identification code, the renewal type identification code storage section 17 for storing the received renewal type identification code for each sender, and the reception. An unlocking control unit 16 that controls the unlocking of the door lock or the like only when the update-type PIN code from the control unit 14 and the update-type PIN code stored in the update-type PIN code storage unit 17 are compared and match. It has and.

Further, the control means 12 communicates with the personal identification code updating unit 15 which renews the renewal type personal identification code every time the door lock or the like is locked or unlocked, and wirelessly communicates the renewed personal identification code. Control unit 1 for controlling transmission of data
3 is provided.

Further, when the unlocking control section 16 receives a reset signal from the reset switch 33 or the like in the vehicle, it has a renewal type PIN code initialization function for initializing the renewal type PIN code corresponding to the reset signal. I have it.

The antenna 11 performs wireless communication with the portable unit 20. The antenna 11 may be installed in a door mirror or a bumper, or may be used in combination with an antenna used for receiving a radio broadcast.

The renewal type personal identification code storage unit 17 may be rewritable and can retain the recorded contents continuously. Therefore, in this embodiment, the R connected to its own power source
AM is used. Further, in the keyless entry system that uses a plurality of portable units for one unlocking control device 10, since each renewable personal identification code is prepared for each portable unit 20, the renewable personal identification code storage unit 17 is The number of renewal type secret codes corresponding to the number of portable units 20 is stored.

The fixed-type personal identification code storage section 18 may be any one as long as it holds a personal identification code given in advance at the time of manufacture, and normally it does not need to be rewritable. Therefore, in this case, a specific area of the ROM is fixed in the fixed code storage unit 1.
8 is set. If a fixed type secret code is prepared for each portable unit 20, the fixed type secret code storage unit 18 stores each fixed type secret code, and one fixed type secret code for one unlock control device 10. If a code is used, the fixed secret code storage unit 18 stores only one fixed secret code.

The control means 12 can control the sending and receiving of the personal identification code, compare the personal identification code, and update the personal identification code, and further unlock the door lock 31 and the trunk lock 32 according to the conditional branch at the time of comparison. The ECU may be mainly formed or a circuit may be used as long as the lock can be controlled.

The personal identification code updating unit 15 updates the renewal type personal identification code. When the renewal type personal identification code is composed of numerical values, the personal identification code updating unit 15 can be a simple counter. In this case, the secret code updating unit 15
Will count up the number of times the unlocking control section 16 has successfully compared the renewal type code. Hereinafter, in this embodiment, the count value, which is the number of times unlocking control is performed after the comparison of the renewal code is successful, is treated as the renewal code in this embodiment.

FIG. 2 is a block diagram showing the configuration of the portable unit according to this embodiment. The portable unit 20 includes an antenna 21 that transmits and receives a wireless signal such as a personal identification code, a fixed personal identification code storage unit 28 that stores a personal identification code having a fixed value in advance, and the fixed personal identification code and the like at a predetermined timing. And a control means 22 for controlling transmission.

Moreover, in the fixed type secret code storage unit 28,
An update-type PIN code storage unit 27 for storing a predetermined update-type PIN code is provided together, and the control means 22 controls the reception of the predetermined update-type PIN code transmitted by a radio signal and the update-type PIN code storage unit 27. A reception control unit 23 for storing,
A transmission control unit 24 is provided for controlling the transmission of the fixed personal identification code stored in the fixed personal identification code storage unit 28 and the renewal personal identification code stored in the renewal personal identification code storage unit 27.

The relationship between the portable unit 20 and each personal identification code will be described. First, as for the fixed-type personal identification code, different values may be set for each portable unit 20 as described above, or the same value may be set for all portable units used in one unlocking control device. . When using the same fixed security code for all portable units, there is a process to make the renewal security code immediately before initialization at the time of resetting the renewal security code a missing number after initialization. Will be needed.

Although various configurations can be adopted for the renewal type identification code, the renewal type identification code of the unlocking control device 10 and the renewal type identification code of the portable unit have different values by the reset operation. I wish I had it. Further, when controlling unlocking of not only the door lock 31 but also the trunk lock 32, it is desirable to use a renewal-type personal identification code for the door lock and a renewal-type personal identification code for the trunk lock 32.

If the portable unit 20 performs the unlocking control as well as the unlocking control, the secret code updating unit 15 causes the renewal type secret code to be executed even when the locking control is performed. Update. Furthermore, when a plurality of portable units are used for one unlocking control device, it is desirable to assign different renewal type secret codes to each portable unit in relation to the reset process.

Regarding the relationship between the renewal type personal identification code and the reset process, the renewal type personal identification code corresponding to the lost portable unit can be initialized, and it can be unlocked by another portable unit. Any configuration will do. In this embodiment, two or more portable units are prepared,
When one is lost, the door lock is unlocked by the other portable unit, and the renewal personal identification code of the lost other portable unit is initialized. Therefore,
The renewal-type personal identification code storage unit stores the renewal-type personal identification code for each mobile unit, with one set for the door lock and one set for the trunk lock.

On the other hand, one renewal-type personal identification code can be sufficiently implemented for the two portable units 20. In this case, one portable unit 20 is used for normal use and the other portable unit 20 is used as a spare. If one of the portable units is lost, it is unlocked by a key or a person in charge of maintenance and reset processing is performed.

FIG. 3 is a block diagram showing a hardware configuration according to this embodiment. In the figure, the area inside the chain double-dashed line is the configuration inside the vehicle. Here, the card unit 20 is used as the portable unit 20. Further, when unlocking control is performed by the card unit 20, first, a pressing operation of the door switch 34 or the trunk switch 35 is required. When the switches 34 and 35 are pushed down, a request signal is requested from the card unit 20, and the card unit 20 requested to send the request signal transmits the fixed type secret code and the renewal type secret code.
A controller is used as the control means 12 of the unlocking control device. The controller 12 has a memory 12A therein and stores each secret code.

FIG. 4 is a diagram showing the configuration of each personal identification code, and FIG. 5 is an explanatory diagram showing changes in the renewal personal identification code under the control of the controller. In this embodiment, the renewal PIN code for the door lock is the door counter, and the renewal PIN code for the trunk lock is the trunk counter. Also,
The fixed personal identification code is simply referred to as a personal identification code. In FIG. 4, one set of each personal identification code is described, but in reality,
Each personal identification code or the like corresponding to the number of card units 20 is used.

Next, an operation example with the configuration shown in FIG. 3 will be described.

FIG. 6 is a flow chart showing the unlocking operation of this embodiment. When the door switch 34 or the trunk switch 35 is pushed down by a driver or the like (step S
1), the controller 12 transmits a request signal to the card unit 20 (step S2).

When the card unit 20 receives this request signal (step S3), the request signal is collated (step S4). If the request signal is normal, the secret code stored in the memory 20A and the door lock 31 or the trunk lock 32 are stored. The counter value is transmitted (step S5). If it is abnormal, nothing is done and the process ends. The card unit may be identified by the form of the request signal.

When the controller 12 receives the secret code and the counter value of the door lock 31 or the trunk lock 32 (step S6), the memory 12A is previously stored.
It is checked against the PIN code stored in (step S
7) If it is normal, the counter value is checked (step S8). If the secret code is abnormal, the process ends without doing anything.

Further, if the counter values of the door lock 31 or the trunk lock 32 match, it is judged whether the door is locked or locked (step S9). If the counters do not match, the process ends without doing anything.

If it is unlocked, the door lock 31 or the trunk lock 32 is turned off (step S10). Also,
If it is locked, the door lock 31 or the trunk lock 32 is turned on (step S11).

Further, after turning on / off the door lock 31 or the trunk lock 32, 1 is added to each counter value (step S12), and a new counter value is transmitted to the card unit 20 (step S13). The card unit 20 has a door lock 31 or a trunk lock 32.
When the counter value of is received (step S14), the content of the memory 20A is updated.

If the state shown in FIG. 5A is before locking / unlocking, when the door is locked / unlocked, the contents of the memory 20A of the card unit 20 are updated as shown in FIG. 5B.

FIG. 7 is a flow chart showing an example of a reset process when the card is lost or stolen. Here, a case where two card units 20 are used and one is lost will be described as an example. When one card is lost, the unlocking control shown in FIG. 6 is performed by the other card. Then, the reset switch 33 in the vehicle is pushed down.

Processing from pressing down the reset switch 33 (step S21) to receiving the secret code and the door lock / trunk lock counter value (step S21)
22 to S26) are the same as the example shown in FIG.

The controller 12 is a card unit 20.
To PIN code, door lock 31 or trunk lock 3
When the counter value of 2 is received (step S26), first, the personal identification code is collated (step S27). If abnormal, the process ends.

If the secret code is correct, the counter value of the door lock 31 or the trunk lock 32 is subsequently checked. If the counter value is abnormal, the process ends.

If they match, all the counter values in the memory 12A are reset (step S28). By this initialization, the counter value stored in the lost one card unit 20 becomes different from the counter value stored in the controller 12, so that the one card unit 20 cannot be unlocked. . In addition, in the present embodiment, the card unit 20 that has been successfully verified.
The secret code of the card unit 20 of the other one is rewritten. In other words, the secret code for the lost card unit is rewritten. Further, the controller 12 controls transmission of the reset counter value to the card unit.

FIG. 8 is a diagram showing a state in which the use of a lost or stolen card is eliminated by the reset process. Normally,
As shown in (a), when the card is locked / unlocked with the correct card, the counters are compared with each other and the count-up and update are performed to activate the lock mechanism.

If the card is lost or stolen, FIG.
As shown in (b), the reset switch 33 of the controller is pushed down with the spare card. Then, the counter value of the controller 12 is reset and the counter of the spare card is also reset. After that, even if the door switch 34 / trunk switch 35 is pushed down with a lost or stolen card, the lock mechanism does not operate.

When a new card unit is used after being lost or stolen, first, the matching process of the card unit 20 having the correct counter value is performed, and only when the matching is successful, the initialization process of the new card unit is accepted. The initialization process of the card unit is performed by setting the personal identification code of the controller in the new card unit.

If the memory unit 20A is embedded in the key portion as shown in FIG. 9 instead of the card unit, it becomes unnecessary to carry the card all the time, and the card can be prevented from being lost.

As described above, according to the present embodiment, even if the portable card is lost or stolen, the lost or stolen card can be disabled only by the reset processing of the counter by the controller. Further, if the counter is reset, it is not necessary to replace the secret code pack of the controller. Moreover, if there is a spare card, it can be used.

Further, the hardware resource can be realized only by enabling the writing process in the conventional keyless entry device.

[0058]

Since the present invention is constructed and functions as described above, the unlocking control unit stores the renewal-type personal identification code stored in the renewal-type personal identification code storage unit and the renewal-type personal identification code from the reception control unit. In comparison, since the unlocking control of the door lock is performed only when the renewal type secret codes match, it is possible to prohibit the use of the portable card in which the renewal type secret codes do not coincide. Moreover, the secret code updating unit updates the renewal type secret code to another value for each unlocking control or locking control, and the transmission control unit controls the transmission to the mobile card, so that a different code is always used as the secret code. be able to. Furthermore, since the unlocking control unit initializes the renewal PIN code when receiving the reset signal from the inside of the vehicle, the renewal PIN code of the unlocking control device and the renewal PIN code of the portable unit are different. It becomes a value. Therefore, it is possible to prohibit the use of the reset portable unit. As described above, it is possible to provide an unprecedented excellent portable unit and unlock control device that can disable a lost card by a simple operation when the portable card is lost or stolen.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an unlocking control device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a portable unit according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of hardware resources according to the present embodiment.

FIG. 4 is an explanatory diagram showing a correspondence relationship of a personal identification code and the like in the configuration shown in FIG.

5 is an explanatory diagram showing a change of a counter value by the controller shown in FIG.

FIG. 6 is a flowchart showing an example of a normal unlocking process with the configuration shown in FIG.

7 is a flowchart showing an example of a reset process with the configuration shown in FIG.

8 is a diagram for explaining the operation of the configuration shown in FIG.
8A is an explanatory diagram corresponding to FIG. 6, and FIG. 8B is an explanatory diagram corresponding to FIG. 7.

FIG. 9 is an explanatory diagram showing another example of the portable unit.

[Explanation of symbols]

 10 unlock control device 11 antenna 12 control means 13 transmission control unit 14 reception control unit 15 secret code update unit 16 unlock control unit 17 renewal type secret code storage unit 18 fixed type secret code storage unit 20 portable unit ( (Card unit) 21 antenna in the portable unit 22 control means in the portable unit 23 reception control section in the portable unit 24 transmission control section in the portable unit 27 renewable personal identification code storage section in the portable unit 28 portable Fixed PIN code storage in the unit

Claims (3)

[Claims] 1. An antenna for transmitting and receiving a radio signal such as a secret code having a fixed value, a fixed secret code storage unit for storing the secret code of the concerned value in advance, a fixed secret code received by the antenna, and In an unlocking control device for a vehicle lock mechanism, which is provided with a control means for stopping unlock control of a door lock or the like if the fixed security code stored in the fixed security code storage unit is compared and does not match. A receiving control unit for controlling reception of a predetermined renewal-type secret code; an update-type secret-code storage unit for storing the received renewal-type personal identification code for each transmission source; An unlocking control unit for controlling the unlocking of the door lock and the like only when the update-type PIN code is compared with the update-type PIN code stored in the update-type PIN code storage unit, and the password The unlocking control includes a PIN updating unit that updates the updated PIN every time unlocking control such as locking, and a transmission control unit that controls transmission of the updated updated PIN by wireless communication. The vehicle lock mechanism, wherein the control unit has an update-type PIN code initialization function for initializing the update-type PIN code corresponding to the reset signal when the reset signal is received from the inside of the vehicle. Unlock control device. 2. The renewal-type personal identification code is configured by a numerical value, and the personal identification code updating unit has a counter function for incrementing the renewal-type personal identification code by one. Unlocking control device for vehicle lock mechanism. 3. An antenna for transmitting and receiving a wireless signal such as a personal identification code, a fixed personal identification code storage section in which a personal identification code having a fixed value is stored in advance, and transmission control of the fixed personal identification code or the like at a predetermined timing. In a portable unit including a control unit, the fixed-type PIN code storage unit is provided with an update-type PIN code storage unit that stores a predetermined update-type PIN code, and the control unit is transmitted by the wireless signal. A reception control unit that controls reception of a predetermined renewal-type PIN code and stores it in the renewal-type PIN code storage unit, the fixed-type PIN code and the renewal-type PIN code storage stored in the fixed-type PIN code storage unit. A portable unit of a vehicle lock mechanism, comprising: a transmission control unit that controls transmission of an update type personal identification code stored in the unit.