JPH03148353A - Keyless controller for vehicle - Google Patents

Abstract

PURPOSE:To simplify structure of a steering lock device by providing a receiving means and a judging means outside of as well as providing a checking means inside of the steering lock device in a keyless controller for vehicle using a portable sending means (card) which can send a specific cipher information. CONSTITUTION:A receiving means 3 to receive a cipher information sent from a card 1 as a portable sending means which can send a specific cipher information and a control unit 7 provided with a judging means 5 to judge the existence of the sending means 1 are provided in a system capable of releasing locking of steering without using a key. Then a checking means 15 to check the received cipher information and a specific cipher information is provided in a steering locking device 19 having a locking means 9, releasing means 11 to release locking and a regulating means 13 to regulate locking releasing, and when both the cipher informations coincide with each other, regulation of the regulating means 13 is released by a regulation releasing means 17.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a keyless control device for a vehicle that can unlock a steering wheel, etc. without using a key.

(Prior art) In recent years, if a driver has a portable card that transmits specific encrypted information, the door can be locked or unlocked simply by pressing a request switch provided on the outside handle of the door. Various systems have been developed that allow locking and unlocking of the steering wheel without using a key. (Unexamined Japanese Patent Publication No. 63-17
(No. 65, Japanese Patent Application Laid-Open No. 63-4182) In such a conventional device, a control unit is installed outside the steering lock device, and the encryption information transmitted from the card and the encryption information set in advance are stored in this control unit. It has a verification circuit for verifying. As a result of the verification by this verification circuit, if the preset cryptographic information matches the cryptographic information sent from the card, a control signal is sent from the control unit, and this control signal allows the steering to be unlocked. It is composed of

Other conventional devices have been proposed in which the above-mentioned verification circuit, control unit, and other various judgment circuits regarding unlocking of the steering wheel are incorporated into the steering lock device.

(Problem to be Solved by the Invention) However, in the conventional device configured by incorporating various circuit parts such as a verification circuit into the steering lock device,
The circuit configuration of the entire steering lock device becomes complicated,
Correspondingly, the number of signal lines also increased, leaving room for further improvement from the viewpoint of the manufacturing process.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a keyless control device for a vehicle without complicating a steering lock device.

[Structure of the Invention] (Means for Solving the Problems) The means provided by the present invention for achieving the above object include a portable transmitting means 1 for transmitting specific encrypted information as shown in FIG. , a receiving means 3 for receiving the encrypted information transmitted from the transmitting means 1, and a determining means 5 for transmitting the received encrypted information when the presence of the transmitting means 1 is determined based on the reception result of the receiving means 3. a control unit comprising: a locking means 9 for locking the steering; a releasing means 11 for unlocking the locking means 9; a regulating means 13 for regulating unlocking of the releasing means 11; a collation means 15 for collating the encrypted information sent from the computer with preset encrypted information; and a restriction release means for releasing the regulation of the regulating means 13 when the collating means 15 determines that the two pieces of encrypted information match. 17 and a steering lock device E19.

(Function) In the present invention, a control unit is provided outside the steering lock device 19. This control unit includes a receiving means 3 for receiving the encrypted information transmitted from the portable transmitting means 1, and when the existence of the transmitting means 1 is determined based on the reception result of the receiving means 3, the received encrypted information is transmitted. It has judgment means 5 for sending out an information number. Therefore, when the encrypted information is sent from the control unit 7 to the steering lock device 19, the verification means 15 in the steering lock device 19 compares the preset encrypted information with the encrypted information sent from the control unit. When both pieces of encrypted information match, the restriction release means 17 is operated to release the restriction of the restriction means 13.

This sets the state in which the steering can be unlocked.

As described above, the verification means 15 is connected to the steering lock device 1.
19, and the steering lock device 1
By providing the control unit outside of the steering lock device 9, it is possible to provide a device in which the circuit configuration of the steering lock device 19 is less complicated.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings.

First, the overall configuration will be explained with reference to Part 2.

The card 21 is a portable transmission means for transmitting specific encrypted information. The door control antenna 23 is provided near the outside handle of the door on the front seat side of the vehicle, and receives encrypted information transmitted from the card 21 when the card 21 is present near the antenna 23. The trunk control antenna 25 is built into the bumper 1 on the rear side, and receives encrypted information transmitted from the card 21 when the card 21 is near the antenna 2-5. Further, the antenna 27 of the ignition control 1I7IN is provided outside the steering lock device and near the driver's seat, which will be explained later. receive.

Next, the control unit 29 and its peripheral devices will be explained in detail.

The antenna switching circuit 31 is connected to each of the antennas 23, 25, and 27, and selectively switches and connects a specific antenna from among the plurality of antennas. The transmission/reception switching circuit 33 is connected to the antenna switching circuit 31, and is also connected to the receiving circuit 35 and the transmitting circuit 37, respectively. This transmission/reception switching circuit 33 connects the antenna switching circuit 31 and the receiving circuit 35 at the reception timing, and connects the antenna switching circuit 31 and the reception circuit 35 at the transmission timing.
and the transmitting circuit 37 are connected. The control unit 39 has arithmetic processing means such as a microcomputer, and executes processes related to @ control related to opening and closing of doors and trunks, and lock control of the steering wheel.

For example, the control unit 39 has a determining means for determining whether or not the card 21 is present in the vicinity of the antenna 27 based on information received via the antenna 27. When it is determined that the card 21 exists, the received cryptographic information is sent to the input/output circuit 4.
7 to the steering lock device 49. Further, the control section 39 is connected to an interface circuit 43 via a reset circuit 41. Further, the control section 39 is connected to various detection sections via an interface circuit 45. Specifically, the interface circuit 45 includes a switch SWA for detecting the locked state of the door, a vehicle speed sensor SNA, a switch SWB for detecting whether the shift lever is in the parking position, and a switch SWB for detecting whether the shift lever is in the parking position. a switch SWC for detecting the open/closed state;
It is connected to each of the ignition switches SWD. Also, the ignition switch SWD is connected to battery B.
Connected to TT. The interface circuit 43 is also connected to a door request switch SWE provided near the outside handle of the door and a trunk request switch SWF provided to the trunk lid.

Next, the internal configuration of the steering lock device 49 will be explained.

The control unit 51 has arithmetic processing means such as a microcomputer, and performs various control processes related to unlocking the steering wheel based on various information such as coded information manually inputted from the control unit 29 via the input/output circuit 53. Execute. Further, the $IIj section 51 is connected to the key request switch SWG via a reset circuit 55.

Further, this key request switch SWG is connected to a reset circuit 41 via an interface circuit 43, and when the key request switch SWG is turned on, the control unit 51 is reset via a reset circuit 55, and at the same time, the reset circuit is The control section 39 is reset via the control section 41. The control unit 51 is also connected to a memory 57 for storing request codes.

The verification section 59 is connected to the control section 51 and also to a memory 61 for storing the encryption code. The collation unit 59 collates the cryptographic code stored in the memory 61 and the cryptographic information obtained from the control unit 51 , and outputs matching information to the control unit 51 if both pieces of information match as a result of the collation. Further, the drive circuit 63 is connected to the control section 51 and also to the latch solenoid 65. 8118
The unit 51 operates the love chilenoid 65 via the drive circuit 63 based on the matching information from the collation unit 59 . Further, the switch SWH is configured to close only when a knob switch (not shown) is in the accessory (ACC) position or when a key is inserted into a key insertion slot provided in the steering lock device.

The steering lock device 49 also includes a locking means (not shown) for locking the steering, a releasing means for unlocking the locking means, and a regulating means for restricting the unlocking of the releasing means. ing. Further, the aforementioned drive circuit 63 and the rough chillenoid 65 form a restriction release means for releasing the restriction of the restriction means. Therefore, when the collation unit 59 finds that both pieces of encrypted information, that is, the encrypted code stored in the memory 61 and the encrypted information obtained from the control unit 29 match, the drive circuit 63
And the love chilenoid 65 is configured to operate to release the restriction of the restriction means.

Next, various information sent from the steering lock device 49 to the control unit 29 will be explained with reference to FIG.

Figure 3 (A) provides information regarding steering lock.
A request sending command consisting of data bits aO-...-...a3 and data bits a4...
. . . A request code consisting of a and ph is transmitted. In addition, in the registration mode to be described later, the operating state of the switch SWH is determined, and for example, when the switch SWH is in the on state, the data bit aO as shown in FIG. 3(B)... ...A switch-on command consisting of a3 is transmitted. Conversely, when the switch SW■ is in the off state, a switch-off command consisting of data bits a0--3 is transmitted as shown in Figure 3(C). ing.

Further, as control information regarding door or trunk opening a1, data bits aO as shown in FIG. 3(D)...
A request transmission command consisting of -...a3 and a request code consisting of data bits a4-...-a7 are transmitted.

Further, as a result of the verification by the verification unit 59, if the two pieces of encrypted information match, a matching command consisting of data bits aO...a3 as shown in FIG. 3(E) is transmitted. At the same time, if the encryption information on both sides does not match, the data bit aO-... as shown in FIG. 3(F) is generated.
. . . The mismatched commands consisting of a3 are each transmitted.

Next, various types of information transmitted from the control unit 29 to the stearing engine 149 will be explained with reference to FIG.

When the key request switch SWG is operated, the data bit aO as shown in FIG. 4(A)...
-Unlock command consisting of a3 and data vibuta
A request code and an encryption code consisting of 4-------a23 are transmitted.

In addition, in the registration mode, as shown in FIG.
A fixed number consisting of 23 is transmitted.

In addition, when transmitting registration information in the registration mode, data bits aO-...
...registration command consisting of a3 and data bit a
4-...The request code and the encryption code consisting of a23 are transmitted.

As control information regarding opening and opening of a door or trunk, information regarding reading of a request signal as shown in FIG. 4(D), that is, a request signal request command consisting of data bits aO, . . ., a3, is transmitted. .

In addition, as information for requesting verification, a verification request command consisting of data bits aO......a3 as shown in Fig. 4(E), and data bits a4...-...
-... A request code and an encryption code consisting of ta23 are transmitted.

Next, the operation of the embodiment shown in FIG. 2 will be explained with reference to FIG.

In step S1, it is determined whether the key request switch SWG has been turned on. If the key request switch SWG has been turned on, the process advances to step S3 and communication with the card 21 is performed. Then step S
5, it is determined whether or not the card 21 exists within a predetermined area. If the card 21 does not exist within the predetermined area, the process advances to step S7 and a buzzer 1 is sounded to indicate that the card 21 is not present. Alert. Then step S7
The process then proceeds to step 851 via X. Also step S
If the card 21 exists within the predetermined area in 5,
For example, if the driver seated in the driver's seat near the steering lock device 49 is carrying the card 21, the process advances to step S9 and data such as a request code and an encryption code are transmitted.

Step S51 determines whether the ignition switch SWD has been turned on, and if the ignition switch SWD has been turned on, step S51
Proceed to 53. In step 553, it is determined whether the ignition switch SWD has been turned to ACC. If the ignition switch SWD has been turned to ACC, the process advances to step S55 and it is determined whether the key request switch SWG has been turned to O. do. If the key request switch SWG is turned on in step S55, the process proceeds to step S51 via X. Further, in step S55, the key request switch SW
If G is not turned on, the process advances to step S57, and it is determined whether the door request switch SWE or the trunk request switch SWF is turned on. In step S57, the door request switch SW
If both E and trunk request switch SWF are not turned on, the process advances to step S59. Step S
In step 59, it is determined whether the door has changed from the open state to the closed state. If the door has not changed from the open state to the closed state, step S is executed via X.
Proceed to 51. Further, if the odor door changes from the open state to the closed state in step S59, step S61
Then, communication is performed with the card 21. Subsequently, in step 363, it is determined whether or not the card 21 exists, and if the card 21 exists within the predetermined area, the process advances to step S51 via X.

If the card 21 does not exist within the predetermined area in step 863, the process advances to step S65 and the card 21 does not exist within the predetermined area.
Alerts that it does not exist.

In step S57, the door request switch SWE
Alternatively, if the trunk request switch SWF is turned on, the process advances to step S67. Step S6
In step 7, it is determined whether the door is open or not.
If the door is open, the process advances to step S69 and communication with the card 21 is performed. Subsequently, in step S71, it is determined whether or not the card 21 exists within a predetermined area. If the card 21 exists within the predetermined area, the process proceeds to step 573 and a warning is issued to the effect that the door is ajar. Next, the process proceeds from step 873 via X to step S51. If the card 21 does not exist within the predetermined area in step 371, the process proceeds to step S51 via X.

If the door is not in the open state in step S67, the process advances to step S75 and it is determined whether the door is in the locked state. If the door is not locked in step S75, the process proceeds to step S51 via X. If the door is in the locked state in step S75, the process advances to step S77 and it is determined whether or not the mode is in which the reception sensitivity is reduced. If it is determined in step 87' that the receiving sensitivity is not in the lowering mode, the process advances to step S79 and communication with the card 21 is performed. Further, if it is determined in step S77 that the receiving sensitivity is in the lowering mode, step 87
After the reception sensitivity is restored in step S79, the process advances to step S79.

Subsequently, in step S81, it is determined whether or not the card 21 exists within a predetermined area. If the card 21 does not exist within the predetermined area, the process proceeds to step S51 via X. If the card 21 is present within the predetermined area in step S81, the process advances to step 383 and the door is unlocked. Subsequently, the process proceeds from step 583 via X to step S51.

In step S51, the ignition switch SWD
If has not been turned on, the process advances to step S85. In step S85, it is determined whether the ignition switch SWD has been turned to ACC. If the ignition switch swD has not been turned to ACC, the process proceeds to step S1 via A.

Next, in step S1, the key request switch SW
If G is not turned on, the process advances to step Sll.

In step Sll, it is determined whether the door request switch SWE is turned on, and if the door request switch SWE is turned on, step 31
Proceed to step 3 and communicate with the card 21. Next, in step 515, it is determined whether the card 21 exists within the predetermined area. If the card 21 does not exist within the predetermined area, the process proceeds to step S51 via X. Further, in step S15, if the card 21 is present in a predetermined area, for example, near the outside handle of the door, the process proceeds to step S17 and it is determined whether the door is closed. If the door is open in step 517, the process proceeds to step S19, and a warning is issued to the effect that the door is not completely closed, that is, the door is ajar.

Subsequently, the process advances from step S19 to step S51 via X. If the door is closed in step S17, the process advances to step S21. In step S21, it is determined whether the door is in the locked state, and if the door is in the locked state, the process advances to step 523. In step S23, it is determined whether the receiving sensitivity is reduced due to the reduced sensitivity mode, that is, the card 21 has been left behind in the vehicle, and if it is the reduced sensitivity mode, the process proceeds to step S25. In step S25, processing related to reception sensitivity recovery check is executed.

The process then proceeds from step 525 to step S51 via X. If it is determined in step S23 that the mode is not in the sensitivity reduction mode, the process advances to step S27 and the door is unlocked. Subsequently, the process advances from step S27 to step S51 via X.

If the door is not locked in step S21, the process advances to step S29 and the door is locked. Subsequently, in step S31, misplacement of the card 21 is detected by communicating with the card 21.

Subsequently, in step S33, it is determined whether the card 21 has been left behind in the vehicle. If the card 21 has been left behind in the vehicle, the process advances to step S35 and the reception sensitivity is lowered. As a result, even if a third party turns on the key request switch SWG, the door will not be unlocked, thereby reliably preventing theft. The process then proceeds from step S35 to step 551 via X. If the card 21 is not left behind in the vehicle in step 833, the process proceeds to step S51 via X.

Next, in step Sll, the door request switch S
If WE is not turned on, the process advances to step S37. In step S37, it is determined whether the trunk request switch SWF has been turned on, and if the trunk request switch SWF has not been turned on, the process advances to step S39. In step S39, it is determined whether the trunk is unlocked. If the trunk is not unlocked, the process advances to step S41. In step S41, it is determined whether the trunk has changed from an open state to a closed state. If the trunk has not changed from an open state to a closed state, the process proceeds to step 551 via X. If the trunk changes from the open state to the closed state in step S41, the process advances to step S31. If the trunk is unlocked in step S39, that is, if the trunk is opened, the process advances to step S43 and the reception sensitivity is restored. Subsequently, the process proceeds from step S43 to step S51 via X.

If the trunk request switch SWF is turned on in step S37, the process advances to step S45 and communication with the card 21 is performed.

Subsequently, in step S47, it is determined whether or not the card 21 exists within the predetermined area. If the card 21 does not exist within the predetermined area, the process proceeds to step S51 via X.
Proceed to. If the card 21 is present within the predetermined area in step S47, for example, if the driver carrying the card 21 is present near the trunk lid, the process proceeds to step S49 and the trunk is opened. Subsequently, the process advances from step S49 to step S51 via X.

Further, in step S85, the ignition switch S
If WD has been rotated to ACC, the process advances to step S87. In step S87, it is determined whether the door is closed, and if the door is not closed, the process advances to step S91. If the door is closed in step S87, the process advances to step S89 and a warning is given that the steering wheel has been forgotten to be locked. Next step S
The process proceeds from step S91 to determine whether the key request switch SWG has been turned on. If the key request switch SWG is not turned on in step S91, the process advances to step S57. If the key request switch SWG is turned on in step S91, the process proceeds to step 393, where it is determined whether the door request switch SWE or the trunk request switch SWF is turned on. If any switch is turned on in step S93, the process proceeds to step S51 via X.

Further, if both switches are not turned on in step S93, the process advances to step S95 and the card 21 is turned on.
Communicate with. Subsequently, in step S97, it is determined whether or not the card 21 exists within the predetermined area. If the card 21 does not exist within the predetermined area, the process proceeds to step S99 and an alarm is issued to the effect that the card 21 does not exist. Then from step S99 to step 551 via X.
Proceed to. If the card 21 is present within the predetermined area in step S97, the process advances to step SIO1.

In step S101, the vehicle speed of the vehicle is detected based on information from the vehicle speed sensor SNA.

Subsequently, in step S103, it is determined whether or not the vehicle is in a running state. If the vehicle is in a running state, the process proceeds to step 551 via X. If the vehicle is not in a running state in step S103, the process advances to step 8105 and it is determined whether the shift lever is in the parking range.

If the shift lever is not in the parking range in step S105, the process proceeds to step S51 via X. If the shift lever is in the parking range in step S105, the process advances to step 5107. In step SIO7, a request code, an encryption code, and data regarding unlocking are transmitted. Subsequently, the process proceeds from step S107 to step 551 via X.

Next, the operation of the steering lock device 49 will be explained with reference to FIG.

The steering lock device 49 sequentially moves a key cylinder (not shown) from the lock position to the accessory (A) position.
CC) position, ON position, START
) position, and an operation knob 49b for releasing the lock state of the steering wheel. The knob switch 49a includes a key request switch SWG and an ignition switch SWD. When the knob switch 49a is pressed, the key request switch SWG is activated, and when the knob switch 49a is rotated, the ignition switch SWD is activated. Operate.

In step S201, communication with the card 21 described above is performed by pressing the operation knob while pressing the knob switch 49a. That is, the key request switch SWG is turned on by pushing the knob switch 49a. At this time, as shown in step S203, if the knob switch 49g or the operating knob 49b is operated due to a child's mischief or the like, the knob switch 49a cannot be rotated because the operating procedure is not well understood.

Further, as shown in step S205, if the driver does not carry the card 21, the operation knob 49b cannot be pushed in because the encrypted information is not verified as described above, and rotation of the knob switch 49a is thereby prohibited. be done.

Also, when the knob switch 49a is pushed in, the card 21
If the driver is carrying the controller, the operating knob 4'9b can be pushed in as shown in step S207, and by pushing in the operating knob 49b, the knob switch 49a is rotated to the accessory (ACC) position. be able to. Next, as shown in step S209, start from the accessory (ACC) position (START)
Since it can be freely rotated into position, the engine can be started. When the engine starts, the knob switch 49a automatically returns to the ON position as shown in step S211.

Next, in step S213, when the door is closed from the open state, it is detected whether the card 21 is present within a predetermined range. If the driver does not carry the card 21 at this time, a warning is given to the effect that the card 21 does not exist, as shown in step S215.

Next, when the vehicle operation is finished and the engine is stopped, as shown in step S217, STAR
The knob switch 49a can be freely rotated from the T) position to the accessory (ACC) position, and the engine can be stopped by rotating the knob switch 49a to the accessory (ACC) position. Subsequently, as shown in step S219, when the door is opened while the knob switch 49m is in the accessory (ACC) position, a warning is issued to the effect that the steering wheel has been forgotten to be locked.

When locking the steering wheel, step S211
As shown in , the knob switch 49a is connected to the accessory (AC
C) Press down the operation knob 49b while pressing this knob switch 49a in the state of being in the position. At this time step S
As shown in 223, if the driver does not carry the card 21, it is impossible to push the operation knob 49,
A warning is issued that the card 21 does not exist. Also step S
As shown at 225, if the vehicle is an automatic (A/T) vehicle and the shift lever is located outside the parking range, the operation knob 49b will not be unlocked. Similarly, as shown in step S227, if the vehicle is not an automatic (A/T) vehicle and the vehicle is in a running state, the operation knob 49b is not unlocked. Further, as shown in step S229, when the driver carries the card 21 and the vehicle is stopped, the knob switch 49a can be rotated to the LOCK position by pushing in the operating knob 49b. This locks the steering wheel and prevents theft.

Next, the operation in the registration mode when registering new cryptographic information will be explained with reference to FIG.

In step S301, the fixed number and registration mode signal are transmitted to the steering lock device f49. Subsequently, in step S303, the detection state of the key detection switch SWH is transmitted to the control unit 29. Next step S
In step S305, it is determined whether the key detection switch SWH is in the on state, and if it is in the on state, the process advances to step S307. In step S307, card 2
1, the request code and the encryption code are read. Next, in step S309, the request code, encryption code, and registration mode signal are transmitted to the steering lock device 49. Next, in step S311, it is determined whether the key detection switch SWH is in the on state, and if it is in the on state, step S313
The process advances to register new cryptographic information in the memory 61.

As described above, if the card 21 is lost, new cryptographic information can be registered using a new card.

[Effects of the Invention] As described above, according to the present invention, the verification means is provided inside the steering lock device, and the receiving means and the determining means are provided outside the steering lock device. The structure is less likely to be complicated.

[Brief explanation of the drawing]

FIG. 1 is a diagram corresponding to claims, FIG. 2 is an overall configuration diagram showing an embodiment of the present invention, FIG. 3 is an explanatory diagram showing various information transmitted from the steering lock device to the control unit, and FIG. Fig. 4 is an explanatory diagram showing various information transmitted from the control unit to the steering lock device, Fig. 5 is a flowchart showing the operation of the embodiment shown in Fig. 2, and Fig. 6 is an explanatory diagram showing various information transmitted from the control unit to the steering lock device. FIG. 7, which is an explanatory diagram showing the operation, is a flowchart showing the operation in the registration mode. 1...Transmitting means 3...Receiving means 5...-Judgment means 7...Control unit 9...Lock means 11--Release means 13-Restriction means 15;-Verification means 17...・Restriction release means 19-steering lock device

Claims (1)

[Scope of Claims] Portable transmitting means for transmitting specific encrypted information; receiving means for receiving encrypted information transmitted from said transmitting means; and presence of said transmitting means based on the reception result of said receiving means. a control unit comprising: a determining means for transmitting the received encrypted information when it is determined; a locking means for locking the steering wheel; a releasing means for unlocking the locking means; and a control unit for regulating unlocking of the releasing means. a regulating means for matching the encrypted information sent from the control unit with preset encrypted information; and a matching means for canceling the regulation of the regulating means when the matching means determines that the encrypted information of both pieces matches. What is claimed is: 1. A keyless control device for a vehicle, comprising: a steering lock device having a restriction release means;