JPH06330664A - Lock control device for vehicle - Google Patents

Abstract

PURPOSE:To unlock a vehicle from its outside by means of a portable transmitter only when no driver exists in the vehicle. CONSTITUTION:An outside-vehicle switch 53b and a key sensor 53a are connected to a microcomputer 75 in an on-vehicle control unit 70, and the lock flag 77a of a memory 77 is set or reset when a door 15 is locked or unlocked based on their signals. Additionally, since the lock flag 77a is usually reset when a driver is in the vehicle, even if a third person outside the vehicle pushes the outside-vehicle switch 53b, an on-vehicle transceiver 80 is not communicated with a portable transceiver 90 so as to prohibit unlocking of the door 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lock control device for releasing a lock provided on a vehicle by a radio signal.

[0002]

2. Description of the Related Art Conventionally, as a control device for locking or unlocking a vehicle door by remote control using a radio signal, one disclosed in Japanese Patent Publication No. 3-50072 is known. According to this, when a driver carrying a portable transmitter presses an exterior switch provided on a door lever from outside the vehicle, communication is performed between the lock control device mounted on the vehicle and the portable transmitter. , The actuator is driven and the door is unlocked when both signs match. Furthermore, if the driver with the portable transmitter is inside the car, the door will be unlocked when a third person outside the car pushes the switch on the door lever outside the car. It was also shown that he had a security circuit attached so that he would not be unlocked when inserting the ignition key.

[0003]

However, when the driver is in the vehicle, the ignition key is not always inserted, and if the driver forgets to insert the ignition key, the above situation occurs.

Therefore, an object of the present invention is to provide a vehicle lock control device which can be unlocked from the outside of a vehicle by a portable transmitter only when the driver is not in the vehicle.

[0005]

In order to achieve the above object, a vehicle lock control device according to a first aspect of the present invention comprises an operating means provided outside the vehicle and a radio signal depending on the operation of the operating means. Lock for a vehicle provided with a transmitting means for transmitting a lock signal, a receiving means provided in the vehicle for receiving the radio signal, and a first unlocking means for releasing a lock in the vehicle in accordance with the reception of the receiving means. In the control device, locking means for locking the lock by an operation from the outside of the vehicle, locking detection means for detecting a locked state of the lock applied by the locking means, and locking status detected by the locking detection means. According to the above, according to the communication permission means for permitting communication between the transmission means and the reception means, the second unlocking means for unlocking the lock by an operation from outside the vehicle, and the second unlocking means. Solution An unlocking detecting means for detecting the unlocked state of the lock, and a communication inhibiting means for inhibiting communication between the transmitting means and the receiving means according to the unlocking state detected by the unlocking detecting means. Prepare The second unlocking means may be the first unlocking means for unlocking the lock in the vehicle in response to the reception of the wireless signal, or may be the one for unlocking the key operation or the like.

A vehicle lock control device according to a second aspect of the present invention is provided with an operating means provided outside the vehicle, a transmitting means for transmitting a radio signal according to the operation of the operating means, and provided in the vehicle. In a vehicle lock control device comprising a receiving means for receiving a radio signal and an unlocking means for releasing a lock in the vehicle in accordance with the reception of the receiving means, a lock for applying the lock by an operation from outside the vehicle. Means, a lock detecting means for detecting a locked state of the lock applied by the lock means, and a communication for permitting communication between the transmitting means and the receiving means according to the lock state detected by the lock detecting means. Permission means, unlocking detection means for detecting the unlocked state of the lock released by the unlocking means, and the transmitting means according to the unlocked state detected by the unlocking detection means, And a communication inhibiting means for inhibiting communication with the serial receiving means.

[0007]

In the vehicle control device of the first aspect of the invention, the transmitting means transmits a radio signal in response to the operation of the operating means provided outside the vehicle, and the receiving means provided in the vehicle receives the radio signal. Then, when the lock in the vehicle is unlocked by the first unlocking means in response to the reception, when the locked state of the lock operated by the locking means from the outside of the vehicle is detected by the lock detecting means, the communication permitting means transmits the transmitting means. Communication between the transmitting means and the receiving means is permitted, and when the unlocking detecting means detects the unlocked state of the lock operated from the outside by the second unlocking means, the communication inhibiting means prohibits the communication between the transmitting means and the receiving means. .

In the vehicle lock control device according to the second aspect of the invention, the transmitting means transmits a wireless signal in response to the operation of the operating means provided outside the vehicle, and the receiving means provided in the vehicle transmits the wireless signal. When the lock in the vehicle is released by the unlocking means in response to the reception, the lock is applied by an operation from outside the vehicle by the lock means, and the lock detection means applies the lock by the lock means. The locked state of the lock is detected, and according to the locked state detected by the locked state detecting means, the communication permitting means permits the communication between the transmitting means and the receiving means, and the unlocking detecting means releases the unlocking means. The unlocking state of the lock is detected, and the communication prohibiting means communicates the transmitting means and the receiving means according to the unlocking state detected by the unlocking detecting means. Prohibition to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle lock control device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a side surface of a vehicle 5 equipped with a lock control device according to an embodiment of the present invention. The lock control device 10 mainly includes a control unit 70 incorporated inside the vehicle 5. The control unit 70 includes a door lever 5
In addition to the key sensor 53a for detecting the presence / absence of the key 60 inserted in the cylinder lock of No. 3, the push type exterior switch 53b provided at a position adjacent to the key sensor 53a and the loop antenna 82 stretched around the window, an actuator. 43 and the lock sensor 58 are connected. The actuator 43 drives a locking lever (not shown) of the door lock device to lock and unlock the door 15. The locking lever is also driven by the key 60 or the door lock knob 51. Lock sensor 58
Detects whether the locking lever is in the locked position or the unlocked position. A card-type portable transceiver 90 is connected to the key 60 in a chain.

FIG. 2 is a block diagram showing the configuration of the lock control device 10. The control unit 70 of the lock control device 10 includes a microcomputer 75 and a memory 77, and their power sources are always backed up by a battery (not shown). The microcomputer 75 has a well-known CPU, ROM, input / output port and the like mounted on one board. The microcomputer 75 includes a key sensor 53a, a switch 53b outside the vehicle,
In addition to the actuator 43 and the lock sensor 58, an in-vehicle transceiver 80 is connected. The key sensor 53a is composed of a light emitting diode (LED) and a photodiode provided inside the cylinder lock so as to face each other, and when the key 60 is inserted between them, infrared rays projected from the LED cannot be received by the photodiode. The presence or absence of the key 60 is detected by. Further, the area of the lock flag 77a is assigned to the memory 77, and the lock flag 77a has a value of "" when the outside switch 53b is pressed by the microcomputer 75 or when the operation of the key 60 is detected by the key sensor 53a. It is set to "1" or reset to the value "0".
The vehicle-mounted transceiver 80 has a loop antenna 82, a reception circuit 83, a transmission circuit 84, and a carrier generation circuit 85, and communicates with the portable transceiver 90. The portable transceiver 90 has a loop antenna 92, a transmitting circuit 94, a receiving circuit 96, a code generating circuit 97, a code memory 98 and a carrier generating circuit 99.

FIG. 3 is a flowchart showing a lock control routine executed by the microcomputer 75 of the lock control device 10. The microcomputer 75 repeatedly executes a lock control routine. When this routine is started (step S110), first, the signal of the key sensor 53a is read to determine whether or not the key 60 is inserted in the cylinder lock (step S120). When the key 60 is not inserted, it is subsequently determined whether or not the vehicle exterior switch 53b has been pressed (step S130). If the switch 53b outside the vehicle is not pushed, the routine is temporarily terminated without doing anything thereafter, but if it is pushed, the signal of the lock sensor 58 is read and the door 15
It is determined whether or not is locked (step S14)
0). When the door 15 is locked, the state of the lock flag 77a in the memory 77 is subsequently read (step S150). When the lock flag 77a is reset to "0", it is determined that the driver remains in the vehicle and the door 15 is locked using the door lock knob 51, and the door 15 is not released. To finish. When the lock flag 77a is set to "1", the microcomputer 75 activates the in-vehicle transceiver 80 to start communication preparation (step S160), and transmits based on the carrier generated by the carrier generation circuit 85. The request signal R modulated by the circuit 84 is transmitted from the loop antenna 82 (step S170).

The following communication is carried out when the portable transceiver 90 which can receive the radio wave of the natural frequency transmitted from the vehicle-mounted transceiver 80 is nearby. FIG. 4 is a flow chart showing the communication of the portable transceiver 90. The portable transceiver 90 is constantly backed up by a button battery, and keeps waiting for reception of the request signal R repeatedly. When the receiving circuit 96 demodulates the request signal R received from the loop antenna 92 arranged around the card body (step S310), the code generating circuit 97 outputs the identification code ID from the code memory 98 in which the identification code ID is stored. Is output to the transmission circuit 94. The transmission circuit 94 modulates this identification code based on the carrier generated by the carrier generation circuit 99, and transmits the identification code ID modulated from the loop antenna 92 as an answer signal A (step S320).

On the other hand, on the transceiver 80 side, when the answer signal including the identification code ID cannot be received from the portable transceiver 90 within a predetermined time after the request signal R is transmitted, or the identification code ID is received. Even if the ROM built in the microcomputer 75 in advance
If it does not match the identification code registered in step S1, then this routine is terminated without doing anything (step S).
175, S180). When the received identification code matches the registered identification code, the portable transceiver 90
It is determined that the driver having the vehicle is about to get on and the actuator 43 is driven to unlock the door 15 (step S190). When the door 15 is unlocked by the switch 53b outside the vehicle, the microcomputer 75 resets the lock flag 77a of the memory 77 to "0" and ends this routine (step S200). In addition, switch 5 outside the vehicle
When the door 15 is unlocked by the lock sensor 58 in step S140 when 3b is pressed, it is determined that the driver is getting off and the door 15 is about to be locked, the same as in step S160 described above. Communication (step S210), that is, request transmission (step S210)
212), the code is received (step S214), and the identification code coincidence is determined (step S216), and then the actuator 43 is driven to lock the door 15 (step S220). After that, the lock flag 77a is set to a value of 1 and this routine is once ended (step S23).
0). When the code is not received, or when the identification codes do not match, this routine is temporarily terminated without doing anything thereafter. Thus, the door 15 can be locked regardless of the state of the lock flag 77a.

Next, the key 60 inserted in the cylinder lock.
The case where the door 15 is locked and unlocked by the operation of will be described. The insertion of the key 60 is detected by the key sensor 53a (step S120). Furthermore, the lock sensor 5
The lock position or the unlock position is detected by 8 (step S250), and it is determined whether the lock state has been switched by operating the key 60. That is, is the key 60 operated to lock (step S260)
Alternatively, it is determined whether the unlocking operation has been performed (step S270). When the lock operation is performed, it is determined that the driver has exited and the lock flag 77a is set to "1" (step S280), and when the unlock operation is performed, it is determined that the driver is aboard and the lock flag 77a is set to "0". To "" (step S290). Further, when the key 60 is inserted into the cylinder lock in step S270 but the switching operation is not performed, this routine is temporarily terminated without doing anything.

As described above, according to the lock control routine of this embodiment, the lock flag 77a is set or set only when the door 15 is locked and unlocked from the outside of the vehicle 5 by pressing the switch 53b outside the vehicle or operating the key 60. Reset and use the door lock knob 51 inside the vehicle to close the door 15
When locking and unlocking, the lock flag 77a is not changed. Therefore, even if the driver is in the vehicle and locks the door 15 using the door lock knob 51, the lock flag 7
Since 7a remains reset to "0",
When a third party outside the vehicle approaches the vehicle 5, the vehicle exterior switch 53
Even if the user presses b, the communication between the in-vehicle transceiver 80 and the portable transceiver 90 owned by the driver in step 160 is prohibited, and the door 15 is not unlocked. As a result, it is possible to remarkably enhance the crime prevention property which has been pointed out in the past.

The above embodiment can be variously modified without departing from the scope of the present invention. For example, as a means for locking the door 15 by a mechanical operation from the outside of the vehicle 5, the case where the key 60 inserted in the cylinder lock is used for the locking operation is shown, but the locking operation is not limited to the key 60, and the door is A keyless lock system may be used in which the door is locked by pulling down the door handle while pushing the door lock knob in the open state to close the door.

As an operating means, a switch 53 outside the vehicle is used.
The transmission switch provided in the portable transceiver is not limited to b, and the in-vehicle transceiver may receive the identification code transmitted by pressing the transmission switch. At this time, when there are a plurality of portable transceivers having the same identification code, a person who possesses one of the portable transceivers is locked in the vehicle when the person who has one of the portable transceivers tries to unlock from the outside of the vehicle. It is possible to obtain the same effect as that of the above-described embodiment in that the door cannot be unlocked by pressing.

Further, the lock control device may be applied to a hatchback type rear door in addition to the left and right doors. Also,
The radio signal is not limited to a radio wave, and an infrared signal may be used. Furthermore, if directivity is provided in the infrared sensing range, only the corresponding door can be locked. Also,
A limit switch, a rotary switch or a reed switch that detects the rotation of the key can be used as the key sensor that detects the insertion of the key.

[0020]

As described above, the vehicle lock control device of the present invention permits communication when the locked state of the lock operated from the outside of the vehicle is detected, and the unlocked state of the lock operated from the outside. Since the communication is prohibited when the detection is made, the communication is prohibited when the person who possesses the transmitting means is in the vehicle, and the crime prevention property is remarkably excellent.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle 5 equipped with a lock control device 10 according to an embodiment.

FIG. 2 is a block diagram showing a configuration of a lock control device 10.

FIG. 3 is a flowchart showing a lock control routine.

FIG. 4 is a flow chart showing communication with a portable transceiver 90.

[Explanation of symbols]

 5 ... Vehicle 10 ... Lock control device 15 ... Door 43 ... Actuator 53b ... Exterior switch 53a ... Key sensor 58 ... Lock sensor 70 ... Control unit 80 ... In-vehicle transceiver 90 ... Portable transceiver

Claims (2)

[Claims] 1. An operating means provided outside the vehicle, a transmitting means for transmitting a radio signal in response to the operation of the operating means, a receiving means provided in the vehicle for receiving the radio signal, A vehicle lock control device comprising: a first unlocking means for releasing a lock in a vehicle in response to reception by a receiving means; a locking means for locking the vehicle by an operation from outside the vehicle; and a locking means for locking the vehicle. Lock detecting means for detecting a locked state of the lock applied, communication permitting means for permitting communication between the transmitting means and the receiving means according to the lock state detected by the lock detecting means, and Second unlocking means for unlocking the lock by an external operation, unlocking detecting means for detecting an unlocked state of the lock unlocked by the second unlocking means, and unlocking detecting means. Therefore, the vehicle lock control device is provided with a communication prohibition unit that prohibits communication between the transmission unit and the reception unit according to the detected unlocked state. 2. An operating means provided outside the vehicle, a transmitting means for transmitting a wireless signal in response to the operation of the operating means, a receiving means provided in the vehicle for receiving the wireless signal, A lock control device for a vehicle, comprising: unlocking means for unlocking the inside of the vehicle in response to reception by the receiving means, wherein the locking means for locking the vehicle by an operation from outside the vehicle, and the locking means for locking the vehicle. Lock detection means for detecting the locked state of the lock, communication permission means for permitting communication between the transmission means and the reception means according to the lock state detected by the lock detection means, and unlocked by the unlock means. Unlocking detecting means for detecting the unlocked state of the locked lock, and prohibiting communication between the transmitting means and the receiving means according to the unlocking state detected by the unlocking detecting means. The vehicle lock control apparatus characterized by comprising a that communication inhibiting means.