JPS60159259A - Locking control apparatus for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle lock control device that wirelessly unlocks and locks door locks and the like as a substitute for a mechanical key of a vehicle.

(Background of the Invention) The applicant of the present application previously proposed a ``radio key system'' in Japanese Patent Application No. 132118/1983 (unpublished). This radio key system is applied, for example, to vehicle door locks, where the driver holds a transmitter instead of a key, and the person in possession of the transmitter operates a switch installed on the door. The door is unlocked or locked only when the vehicle is in use.

FIG. 1 is a block diagram showing a schematic configuration of the radio wave type key system (hereinafter referred to as a vehicle locking control device). In the figure, a transmitter 1 is housed in a card-type case, and this card-type transmitter 1 is carried by the driver in place of the mechanical key of the vehicle 18.

On the other hand, a control device 2 is mounted on the vehicle 18 side, and a loop antenna 10 is installed on the window.
There is a switch near the door handle on the driver's side door.

The above-mentioned card-type transmission (1) is a request (1) that is transmitted from the control device 2 on the vehicle body while the power is always on.
, i is ready to receive.

And does the driver carrying this card-type transmitter 1 unlock the door? If you manually operate the switch 12 in order to do this, the control will be activated (not shown in Figure 1)! The No. 5 optical generation circuit 11 in the II device 2 is activated and transmits the request signal 6 through the loop antenna 1o for a certain period of time. The reflex (~ signal) transmitted from this loop antenna 10 is received by the loop antenna 3 of the card type transmitter 1 and 1 by electromagnetic induction. , the request signal is sent to the control device 2 on the vehicle 18 side by the riffist belief detection circuit 7.
The code signal generation circuit 8 is activated.

When the code signal generation circuit 8 is activated, it outputs a code signal unique to the vehicle 18 (a different code is set for each vehicle) that has been stored in the code storage circuit 9 in advance. and,
In the modulation circuit 5, the Kyrelia signal supplied from the carrier oscillation circuit 6 is modulated by the code signal, and the output J circuit 4. Transmit via loop antenna 3.

Then, on the vehicle side, the unique=1-code signal transmitted from the card type transmitter 1 is transmitted to the loop antenna 10.
The received unique code signal is supplied to a code matching circuit 14 via a receiving/demodulating circuit 13.

The code matching circuit 14 determines whether or not the vehicle-specific code signal registered in advance in the code storage circuit 15 matches the received code signal, and determines whether both code signals match. The actuator drive circuit 16 is driven only in certain cases.

Then, when the actuator drive circuit 16 is driven,
The actuator 17, which unlocks and locks the door lock, is driven to unlock the door.

In this way, the door locks are unlocked and locked only when the code signal on the card transfer 4g1 side and the code signal registered in the control circuit 2 on the vehicle side match, so that, for example, Even if a person who does not own the card-type transmitter 1 tries to unlock the door, the door will not be unlocked. Even if a person on the right carrying a card-type transmitter with a different code signal tries to unlock the door, the door will not unlock in the same way.

As a result, the card-type transmitter 1 has the same security performance as a conventional mechanical key. Because it can be used while stored in the
This eliminates the need to take out the key every time the FIv lock is locked, as is the case with mechanical keys.

The actuator 17 is designed to reverse the door lock state each time it is driven, and if the door lock is locked before driving, it will unlock the door and drive fJ+.
(If it is unlocked at +ζ■, perform the locking operation.

By the way, the inventors of the present application discovered the following improvements while further researching the above-mentioned vehicle locking control device.

That is, for example, the switch 12 is installed on the outside of the vehicle and can be operated by a person other than the driver, so it may be repeatedly pressed due to, for example, a child's mischief. When 12 is operated, a request signal is sent each time to the control device on the vehicle body side, and it is conceivable that 11 battery power is wasted.

Therefore, it has been found that by improving this point, it is possible to provide a device with better performance.

(Object of the Invention) An object of the present invention is to provide a vehicle locking control device that can prevent the power of the vehicle battery from being wasted due to unnecessary switch operations caused by mischief or the like.
There are many things.

(Structure of the invention) The configuration of the present invention will be explained below with reference to FIG.

The receiving means 101 is installed on the vehicle body side and receives a predetermined unique signal that is wirelessly transmitted (+'I) from the portable transmitter 100.

In the unique signal matching means 102, it is determined whether or not the received unique signal b (matches the fixed signal 1 set in advance on the vehicle body side).

The switch 103 outputs a signal to start controlling the locking/IA' locking operation of a predetermined part of the vehicle body such as a door opening and a doorway when manually operated.
4 is 1. Only when the switch is operated and it is determined that the unique signals match, the lock actuates 1.
The lock 105 is driven to lock and unlock the lock.

Furthermore, the time limit pasting means 106 is for prohibiting locking/unlocking operations by operating the switch 103 for a certain period of time after the switch 103 is operated.

(Description of Embodiment) FIG. 4 shows an embodiment of the vehicle locking control device according to the present invention. Figure 5 is a block diagram showing the configuration of the card type transmitter. FIG. 2 is a circuit diagram showing the configuration of a 2Il device.

The card-type transmission device 30 shown in FIG. It is carried like a conventional mechanical key.

The electrical configuration of the card type transmitter 1130 includes a loop antenna 31, a receiving/demodulating circuit 32 for detecting a request signal, a microcomputer 33, and a circuit for storing a unique code. It is roughly composed of a memory 34, a carrier oscillation circuit 36 for transmitting a unique code signal, and a modulation circuit 35.

On the other hand, a control device 40 as shown in FIG. 5 is mounted on the vehicle body side. This control device 40 is mainly configured with a microcomputer (hereinafter referred to as CI U) 53, which includes a microcomputer (hereinafter referred to as CI) 53, a microcomputer (CI)-1I10 interface circuit, and a memory (+'( 113 (OM, ISAM, etc.), and a timer.

The antennas 41a and 41b are loop antennas installed near the 1st to rank clocks of the 1st to rank of the vehicle body, and both are arranged at a predetermined interval.

The other pair of loop antennas 41C and 41d are arranged near the driver's side door.
1G is driving 1f, r, inside the mirror frame of the side door mirror, the other loop antenna 4.1 d is driving 11λ sea 1
It is located inside.

Corresponding to the above loop antenna 4'la~4''ldt, push button type switch (hereinafter referred to as start switch) 62゜63 is installed at a predetermined position on the outside of the driver's side door door 41~rank.
is attached ().

One antenna 41b of each of the two pairs of loop antennas
, 41d has a 900B phase converter 42. /13 is connected d
3. This makes the transmitted and received signals 90'
It has a phase-shifted configuration.

The switching circuits 46a and 46b respond to the switching signal S1 output from the CPU 53 to switch between the antenna pair 4' on the trunk side.
la', 411) or driver's side antenna pair 410
, 416 is an analog switch circuit that activates one of the antenna pairs.

The Δ/D converter 47 inputs the received signal received by the antenna 41d installed in the driver's seat via the high frequency amplifier 44, and converts the level of this manually input signal into digital data. , this digital data is supplied to the CPU 53 as received signal strength data 1 ([.
It is executed in response to the arrival of the trigger signal S2 supplied from the PU 53.

The door switch 57 is for detecting the closed door/closed state of the operation section side door, and is turned on between the doors.

OF+- between the doors.

Similarly, the door switch 58 is a switch for detecting the open/closed states of the passenger door and the two rear doors (in the case of a sedan), and is ON between the doors and OFF between the doors. becomes.

The key switch 59 is a switch that can detect whether or not a key is inserted into the key cylinder of an ignition key switch in the driver's cab, and is turned on when the key is inserted into the key cylinder.

The lock knob switch 60 is a switch that is turned on when the door lock knob provided on the inner surface of the door on the driver's seat side is pushed in to perform a lock operation.

The lock state detection switch 61 is a switch that detects the state of the door lock mechanism, and is OFF when the door lock mechanism is in the locked state, and ON when the door lock mechanism is in the unlocked state.
This is the switch.

The electric wire star I-detection 8 circuit 54 is connected to each switch 57.
If any one of the switches 57 and 63 is turned on (however, the switches 57 and 61 are turned on).

It is driven for a predetermined period of time (when switching OFF), and power is supplied from the power supply 55 to each circuit. Also, C
When the power supply holding signal S3 supplied from the PU53 arrives, the power supply is maintained regardless of the operation of each of the switches, and the power supply is stopped when the CI) U53 enters the standby state. ing.

The relay 65 is driven when the trunk unlock signal S8 is output from the CPU 53 and transistors 1 to Tr1 are turned ON, and the relay 65 drives the trunk lock unlocking solenoid (path shown) to unlock the I-rank lock. It is what makes the lock work.

Relay 66 and relay 67 respectively receive door lock signal S7 and door unlock signal @ output from CPU 53.
Transistor Trz in S6.

The relay 66 rotates the motor that automatically opens and closes the door lock (path shown) to lock the door, and the relay 67 rotates the motor in the forward direction to lock the door. It is meant to be unlocked.

The detailed information signal S9 outputted from the CPU 53 is a signal that drives the alarm drive circuit 68 and causes the horn to sound.

Further, a unique code is input from the CPU 53 via a multiplexer 69.

That is, the multi-branch 69 is provided with an input connector, and each terminal of this connector is all 170 open at the time of manufacture.

When this locking control device is sold and handed over to a user, the unique code plug 70 that was stored together with the card type transmitter 30 is transferred to the multiplex controller 69.
] connector.

This unique code plug 70 is adapted to form 4-digit code data (each digit is represented by 4 pits) to correspond to the unique code stored in the circuit of the card-type transmitter 30. The structure is such that the bins connected to each other are short-circuited.

Such a unique code plug 70 is a multi-break cable 69.
By being inserted into the connector of the multiplexer, the unique code data is supplied to the CPtJ53.

Next, the flowcharts shown in Figures 6 and 7 are as follows:
This is a flowchart showing the contents of the process executed by the CPU 53 in the vehicle body side control device 40, and the flowchart shown in FIG. It indicates the content.

The operation of the apparatus of this embodiment will be explained below based on these flowcharts.

Assuming that all the door locks of the vehicle are locked, the operation when a driver carrying the card type transmitter 30 tries to unlock the driver's side door lock in order to get into the vehicle. Explain.

The only operation required by the driver is to manually operate the activation switch 62 provided near the door handle of the driver's seat side door.

As the starting switch 62 is turned on, power is supplied to each circuit, and CPIJ! 53
is activated, and the interrupt processing accompanying the ON operation of the activation switch shown in FIG. 7 is executed.

When this interrupt processing is started, in step 301, it is determined whether or not the flag 1la() is set to 1.
g is for storing whether or not interrupt processing is prohibited in the startup switch (hereinafter, this flag is referred to as the time limit prohibition flag).U Now, the time limit prohibition flag llag is set to 11'
3, if it is determined that interrupts by the start switch are not prohibited, then the process of step 302 is executed,
The process of setting 1 to this time limit prohibition flag Flag is 4.
1 will be given.

Then, in the next step 303, the predetermined timer is set to star 1. This timer is CPU53
This is a soft timer built in. When this timer starts 1-, the independent timer processing shown in Figure 6 starts at the 7th timer.
This will be executed in parallel with the interrupt processing shown in the figure.

- The timer processing described in step 201 is performed as follows:
1 o'clock time of the above timer is preset timer time (
For example, a determination process is performed to determine whether or not a period of time (set to several seconds) has elapsed.

After the timer time has elapsed, the timer is reset by the process of step 202, and step 20
Through the process 3, the time limit prohibition flag F flag is reset.

Returning again to the interrupt processing in FIG. 7, after the timer is started, the next step 304 is executed to determine whether or not the key has been taken out from the key cylinder of the ignition key. Processing is done. This is determined based on whether the key switch 59 is OFF or not.

If it is determined that the key has been played, the next step 305 is executed to transmit the rhythmist signal.

This process is carried out by the CPU 53 and the switching circuit 46a.

46b1 and the switching circuit 48 respectively.
This is a process of outputting a serial pulse train signal S5 of a predetermined code to the modulator 49 at the same time as outputting the signal S4.

As a result, the carrier wave generated from the first oscillator 50 is sent to the modulator /I9 and modulated into the pulse train signal S5 to generate a riffist signal.

Loop antenna 41c via high frequency amplifier 4511
, 41d, the request signal is wirelessly transmitted 5.

In this way, when the riffist signal is transmitted from the vehicle body, the card-type transmitter 17M 30 carried by the driver
On the other hand, this first lift signal is received, and the determination result in step 4.01 of FIG. 8 is YES.
becomes.

As a result, the following steps 402 and 403 are executed, and the code signal of the vehicle which has been previously recorded in the memory 34 (hereinafter referred to as the "node side key code")
is read into the microcomputer 33, and a pulse train signal corresponding to this key code is output to the modulation circuit 35.

Therefore, a radio signal carrying the above-mentioned key code is transmitted from the loop anti')-31.

During this time, the vehicle control device J3 is in step a3 of step 306 in FIG. 7, and is waiting for reception of the card side key code signal v1! is being carried out.

When the card-side key code signal training is received, the received card-side key code is temporarily stored in a predetermined register. Then, in the next step 307, the unique code (hereinafter referred to as the vehicle body key code) set on the vehicle body side is read through the multiplexer 60.

Then, in the next step 308, the received card side key code and the read vehicle body side key code are compared to determine if they match.

If the result of the above-mentioned match determination process is "mismatch", the card-type transmission question carried by the person who operated the activation switch 62 is not compatible with this vehicle, that is, the person who operated the switch It is determined that the owner is not the owner of this vehicle, and the following door unlocking operation is not performed.

On the other hand, if the card-side key code and the vehicle body-side key code "match", the next step 309 is executed to determine whether the driver's side door is currently locked. This is done by determining whether the lock state detection switch is OFF or not.

If the driver's side door is locked, the next step 310 is executed, the CPU 53 outputs the door unlock key 3 S6, and the relay 67 is activated.
In response to this, the driver's side door lock motor rotates forward and the driver's side door lock is unlocked.

In this way, the door lock is unlocked only when the person in possession of the card-type transmitter 30 with the key code matching the key code on the vehicle body turns on the activation switch 62, and the above-mentioned Even if a person who does not have the card type transmitter 30 tries to unlock the lock, the unlocking operation will not be performed. Further, even if a person in possession of a card type transmitter with a different key code attempts to similarly unlock the door, the door will not be unlocked.

Furthermore, when the driver gets out of the vehicle and attempts to lock the driver's side door, all he has to do is turn on the start switch 62 in the same way as the door lock unlocking operation. In this case, the determination result of the step 309 is No, the process of the next step 311 is executed, the door lock signal S7 is output from the CPU 53,
The driver's side door lock motor rotates in reverse and the driver's side door lock is locked.

At this time, as the driver's side door lock is locked by a separate automatic door locking device (not shown), all the door locks of the other doors are locked.

Next, we will explain a case where the activation switch 62 is turned on many times due to, for example, a child's mischief.

First, in response to the first ON operation of the start switch 62, the interrupt process shown in FIG. 7 is executed. In this case, since the time limit prohibition flag F flag is in a reset state, the following processing is executed starting from step 301.

Then, the timer is started and the timer processing shown in FIG. 6 is executed.

In this case, the child who is doing the mischief does not carry a card-type transmitter 30, so even if the request signal is transmitted, the key code signal is not received, so the key code matching determination process is performed. The locking/unlocking operation of the doors is not performed.

Therefore, the interrupt processing shown in FIG. 7 will be executed each time the start switch 62 is turned ON from the second time onward. In this case, the interrupt processing shown in FIG. Since the time limit prohibition flag Flag is set (in step 302), the determination result in step 301 is Y.
The result is ES, and the processing from step 302 onwards is not performed.

This state is maintained until the timer time elapses by the timer processing shown in FIG.

In this way, even if the start switch 62 is turned on many times in succession due to a child's mischief, etc., the RIFNI TOY G@ is not transmitted each time, and the power of the vehicle battery is wasted. can be prevented.

Regarding the 1-rank lock, when the driver turns on the activation switch 63 provided near the trunk door, the same operation as described above regarding the IC door lock is performed. As these operations and flowcharts are similar, illustration and description thereof will be omitted.

(Effects of the Invention) As explained in detail above, in the locking control device for 41 vehicles of the present invention, for example, when a child mischief occurs,
Even if the start switch is turned on many times in succession, it can prevent the need for a relatively large amount of power each time and the needless transmission of the quest signal, thereby reducing the waste of power from the vehicle's battery. It is possible to avoid this.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the schematic configuration of the vehicle locking system according to the earlier application; Fig. 2 is a diagram showing the external appearance of the tit Vi device and how it is mounted on the vehicle; Fig. 3 is the invention of the present invention. FIG. 4 is a block diagram showing the configuration of an embodiment of the present invention.
Figure 5 is a block diagram showing the electrical configuration of the card-type transmitter, Figure 5 is a circuit diagram showing the electrical configuration of the vehicle body side control device in the same device, and Figures 6 and 7 are the same embodiment device. FIG. 8 is a flowchart showing the contents of the process executed in the vehicle body side control device, and FIG. 100... 1jt band transmission 1 101... Receiving means 102... Unique signal matching means 103... Switch 104... Lock actuator]--Ta drive means 105.
...Lock actuator 106...Time prohibition means 30...Card type transmitter 40...Control device 62.63...Start switch 33.53...Microcomputer 34...Memory 31... ... Loop antennas 418-416 ... Loop antennas 65-67 ... Relay Flag ... Time limit prohibition flag special r [Applicant: Nissan Motor Co., Ltd.

Claims (1)

[Claims] (1) A portable transmitter that wirelessly transmits a predetermined unique signal; A receiving means that is provided on the vehicle body and receives the unique signal; The received unique signal is a unique signal that is preset on the vehicle body. a lock actuator that locks and unlocks a predetermined part of the vehicle body such as a door lock; and a lock actuator that locks and unlocks a predetermined part of the vehicle body such as a door lock; a lock actuator drive means that drives the lock actuator only when the switch is operated and it is determined that the unique signals match; and a lock actuator driving means that drives the lock actuator for a certain period of time after the switch is operated. 1. A locking control device for a vehicle, comprising: a time limit inhibiting means for prohibiting a locking/unlocking operation by a switch device.