JPS60119879A - Locking controller 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) This invention is a vehicle lock control system that wirelessly unlocks and locks door locks, etc., in place of a mechanical key for a vehicle! Regarding the location.

(Background of the Invention) The applicant of the present application previously proposed a "radio wave type key system" in Japanese Patent Application No. 132118/1982 (unpublished). This radio key system is applied, for example, to the door lock of a vehicle. Instead of the driver having a key, he or she has a transmitter α, and the person in possession of this 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 a driver in place of a mechanical key of a vehicle.

On the other hand, a control device 2 is mounted on the vehicle side, a loop antenna 10 is provided on the window, and a push button switch 12 is provided near the door handle on the driver's seat side door.

The card-type transmitter 1 is always in an electro-hydraulic ON state and is in a state in which it can receive the Riffist No. 1Fg transmitted from the control device 2 on the vehicle body side. When the driver carrying this card-type transmitter 1 manually operates the switch 12 in order to unlock the door, the request signal generation circuit 11 in the control device 2 shown in FIG. A time request signal is transmitted from the loop antenna 10. The Riffist signal transmitted from the loop antenna 10 is received by the loop antenna 3 of the card-type transmitter 1 by electromagnetic induction. Then, on the card type transmitter 1 side, the lift 1 strike signal detection circuit 7 sends a signal to the lift varnish 1 on the vehicle side 1lil[l[! 2
The code signal generation circuit 8 is activated.

]- When the code signal generation circuit 8 is activated, it outputs a vehicle-specific code signal (a different hood is set for each vehicle) that has been stored in the code storage circuit 9 in advance. And'l
! In the modulation circuit 5, the carrier signal supplied from the carrier oscillation circuit 6 is modulated by the code signal, and the output circuit 4. Transmit via loop antenna 3.

Then, on the vehicle side, the unique code signal transmitted from the card-type transmitter 1 is received by the loop antenna 10, and the received unique code signal is
The signal is supplied to the code verification circuit 14 via the demodulation 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 and the received code signal match. The actuator drive circuit 16 is driven only when the two match.

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 lock is unlocked and locked only when the code signal on the card-type transmitter 1 side and the code signal registered in the control circuit 2 on the vehicle side match. Even if a person who does not have the transmitter 11 tries to unlock the door, the door will not be unlocked. Further, even if a person carrying a card type transmitter 1 with a different code signal attempts to unlock the door, the door lock will not be unlocked in the same way. As a result, card type transmission 1
1 has the same security performance as a conventional mechanical key.

In addition, since the card-type transmitter 1 can be used while stored in a pocket or bag, it eliminates the need to take out the key every time the lock is unlocked or locked, unlike conventional mechanical keys. Become.

The actuator 17 is configured to reverse the door lock state each time it is driven, so that if the door lock is locked before driving, it will unlock the door, and if it is unlocked before driving, it will unlock the door. Perform 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 numbered on the outside of the vehicle and can be operated by a third person other than the driver. When operated, the control device 2 on the vehicle body side sends a request signal each time,
It is conceivable that the power of the vehicle's battery will be wasted. Therefore, it has been found that by improving this point, it is possible to provide a device with even better performance.

(Object of the Invention) An object of the present invention is to provide a vehicle locking control device that can prevent a disassembled electric saw from being wasted due to unnecessary switch operations caused by mischief or the like. It is in.

(Structure of the invention) Hereinafter, the configuration of the present invention will be explained using FIG. 3.

The receiving means 101 is provided on the vehicle body side and receives a predetermined unique signal wirelessly transmitted from the portable transmitter 100.

In the unique signal matching means 102 a3, it is determined whether or not the received unique signal matches a unique signal preset on the vehicle body side.

The switch 103 outputs a signal to start controlling the locking/unlocking operation of a predetermined part of a door lock etc. when the switch is operated. And only when it is determined that the unique signals match, the lock actuator 10
5 to lock and unlock the lock.

Further, the callan 1 to the means 106 are the unique signal matching means 10.
Out of the judgment results in step 2, the number of times it is judged as ``mismatch, 1'' is y
Count by 1.

When the number of "inconsistency" judgments counted by the counting means 106 exceeds a predetermined number within a certain period of time, the locking/unlocking operation by the switch operation is prohibited for a certain period of time by the time prohibition means 107. (Explanation of Embodiment) Fig. 4 is a 10' diagram showing the configuration of a card-type transmitter in an embodiment of the vehicle locking control device according to the present invention, and Fig. 5 is a diagram showing the configuration of a card-type transmitter that is also provided on the vehicle body side. FIG. 2 is a circuit diagram showing the configuration of a control device.

The card-type transmitter 30 shown in FIG. 4 is housed in a thin card-type case about the size of a business card, similar to the conventional example shown in FIG. It is something you carry with you like a key.

The electrical configuration of the card type transmitter 30 includes a loop antenna 31, a receiving/demodulating circuit 32 for detecting a request signal, a microphone [cocomputer 33], and a memory for storing a unique code. 34, a carrier oscillation circuit 36 and a modulation circuit 35 for transmitting a fixed 8]-code signal.

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 micro combi coater (hereinafter referred to as CP LJ) 53, and this CPU 53 has a microcombicoater (hereinafter referred to as CP LJ) 53, a microphone I/BROLETS unit, an I10 interno-eight circuit, and memories (ROM, RAM, etc.). ], and a timer.

antenna 418. =1.1b is a loop antenna arranged near the trunk lock of the trunk of the vehicle body, and both antennas are arranged at a predetermined interval.

The other set of loop antennas 41c and 41d is arranged near the driver's seat side door.

In addition, push-button switches (hereinafter referred to as start switches) 62 and 63 are installed at predetermined positions on the outside of the driver's side door and trunk in correspondence with the loop antennas 41a to 41d (1).
It is being

The switching circuits 46a and 4.6b respond to the switching signal S output from the output port 03 of the CPU 53 to switch between the trunk side antenna pair 4.1a and 4.1b or the driver side antenna pair 41c and 41ct. This is an analog switch circuit that activates one of the antenna pairs.

The door switch 57 is for detecting whether the driver's side door is open or closed, and is turned on between the doors.

It is turned off between doors.

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

The key switch 59 is a switch for detecting 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'1J when a door lock knob provided on the inner surface of the driver's seat side door is pushed in and a manual locking operation is performed.

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

The power supply start detection circuit 5/I includes each of the switches 57 to 57.
If any one of 63 is turned on (however,
SWIN f57. (ON for 31.

It is driven for a predetermined period of time (when switching OFF), and power is supplied from the power source 55 to each circuit. Also, C
Power holding signal supplied from output port 05 of PU53 @
When S3 arrives, the power supply is maintained regardless of the switch operation of each of the switches, and the power supply is stopped when the CPLJ 53 enters the standby state.

The relay 65 is connected to the transistor T' when the trunk unlock signal S8 is output from the output port 08 of the CPLJ53.
1 is turned ON, and drives the trunk I cock unlocking solenoid (path shown) to unlock the L-rank lock.

Relay 66 and relay 67 each receive a door lock signal @S7 output from output port 07.06 of CPU 53.
And open the door! Transistor T by ivy signal S6
It is driven by the ON of I' 2 and Tr 3, and locks the door by reversing the relay 664 and the motor (path shown) that automatically opens and closes the door lock.
The relay 67 rotates the motor in the normal direction to unlock the door.

Alarm signal @S output from output port 09 of CPU53
9 is a signal that drives the alarm drive circuit 68 and causes the horn to sound.

Furthermore, the configuration is such that a unique code is inputted from the input port l+2 of the CPU 53 via six multiplexers.

This unique hood plug 70 stores code data of four digits (each digit is represented by 4 bits) so as to correspond to the unique code stored in the circuit of the card type transmitter 30.

Next, FIGS. 6 and 7 are flowcharts showing the contents of the processing executed in the CPLJ53.
The operation of the apparatus of this embodiment will be explained using the figure.

In Figures 6 and 7, the part surrounded by broken lines is the CPU
5 is a flowchart showing the contents of processing executed in 53.

Assuming that all the door locks of the vehicle are locked, the operation will be explained as an example when a driver carrying the card-type transmitter 30 attempts to unlock the driver's side door lock in order to get into the vehicle. do.

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

As the start switch 62 is turned on, 0RI
jl function 81, one of the start switches is set to O.
Detects that the
is executed. This startup operation (10> is power star 1~
This is a process of driving the detection circuit 54, canceling the standby state of the CPU 53, and starting the CPIJ.

Inside the CPU 53 started by the startup operation (10) Detection a3 and storage processing are executed.

Detection and storage processing (11) of this desired function detects which of the start switches 62 and 63 has been turned on based on the input states of input ports I+o and I++, and A process is performed to temporarily store the side panono board (in this case, ■1°) in the functional storage memory 86.

Next, processing (12) is executed to select a loop antenna for transmitting the request signal.

This is a process of activating the transmitting loop antenna installed near the ON-operated activation switch based on the contents of the function memory 86. In this case, the transmitting loop antenna installed near the driver's side door is activated. Trusted loop antenna 410 is activated. However, switching signals S4. By outputting Sl, the switching circuits 46a, 46b, and 4B are set to switch, and the request signal outputted via the modulator 49 is transferred to the loop antenna 41.
An action is taken to set up the circuit to supply C.

And, place 11N! (13) is subsequently executed, the drive signal S5 is supplied from the output port O9 to the modulator/1, and the operation of modulating the carrier wave from the oscillator 50 and making it a -C request signal is performed. This request signal will be transmitted as a wireless signal from the activated loop antenna 41C.

At this time, the generation time of the request signal is determined by the timer 87 in the CPU 53 for a certain period of time (for example, 100m5e
c) It is configured to be transmitted.

Note that the transmitting antenna selection section 82 and the reception antenna selection section 83 in the figure represent circuits constituted by switching circuits 46a, 46b, 48, and the like.

When the request signal is transmitted in this manner, the card type transmitter 1130 performs an operation of wirelessly transmitting a code signal in response to receiving the request signal, as described above.

After performing the operation of transmitting the request signal, the vehicle-side control device 40 executes the process (14), and is in a state of waiting to receive the unique code signal transmitted from the card-type transmitter 30.

The process (14) is a process of activating the loop antenna for the receiver 5 (in this case, the loop antenna 41d) corresponding to the activation switch that has been turned ON, based on the contents of the functional memory 86, and The circuit is set such that the received signal is input to the detection/demodulator 52 by outputting the switching signal @S4+Sl from -hoz, O, and i.

And then, Tokoro II! When (15) is executed, a drive signal is supplied from the output port O1 to the detection/demodulator 52, and the code signal received by the receiving loop antenna 41d is detected and demodulated, and the code signal in the carrier wave is After the components are extracted and A/D converted, the input port I,
is inputted to the CPU 53 from.

At this time, the CPU 53 executes process W(16) to read the input unique=1-code (hereinafter referred to as the received unique code), store it as J5.

Once the receiving unique code has been read and stored, the seventh
Process (17) in the figure is executed. This process is performed using the unique code data set on the 11 body side that is sent as serial data from the unique code storage unit 84 (consisting of the multiplexer 69 and the unique code plug 70).
This is a process in which the vehicle body side unique code (hereinafter referred to as "vehicle body side unique code") is read, and the received unique code data is compared to determine if the two match.

Note that the vehicle body side unique code data supplied from the unique code storage section 84 is stored in a register in the CP LJ and processed as parallel data.

Then, process (18) is executed, and as a result of the above verification, it is determined whether or not both = 1- codes are "matching". If they are "matching", then processing ( 19) is executed.

This process (19) is a process for supplying a drive signal to the actuator drive section 85 composed of the transistors Tr+-Tr3 and the relays 65 to 67. In this case,
It is determined based on the contents of the function memory 86 that the activation switch 62 on the driver's side door has been turned ON, and whether the lock state detection switch 62 is OFF (that is, the door lock is in the locked state). is determined from the state of input port I3. When the door lock is in the locked state, the drive signal S is output from the output port 06 to turn on the transistors l'-r3.

The door lock is unlocked by turning on the relay 67 and rotating the door lock motor in the forward direction.

After the door lock is unlocked in this manner, the CPU 53 enters a standby state until the next switch operation is performed.

On the other hand, place 3! ! ! If the determination result of (1B> is No, then process (20) is executed. This process is as follows:
While the timer 88 starts when the start switch is turned on, the number of times the determination result of the paper determination process (18) becomes NO is counted to 4 while the fixed time is set to 4 o'clock! This is the X principle.

If the number of calls t exceeds the predetermined number within this fixed time, the determination result in the next step 1!1 (21) becomes YES.

As a result, process (22) is then executed to stop the operation of the CPU for a certain period of time. Note that at this time, it is also possible to make the horn sound by generating the alarm output Ss and driving the alarm drive circuit 68.

With this kind of processing, for example, if a child or the like plays a trick and repeatedly turns on the start switch 62 or 63 when all the doors are locked, a riffist signal is sent each time and the battery power is turned off. "Consume"
Situations like this can be prevented.

Further, in the above explanation, the unlocking operation of the door lock has been described, but the operation is similar to the above-mentioned operation in the case of the unlocking operation of the rank lock or the locking operation of the door lock.

Next, flowcharts shown in FIGS. 8 to 12 show processes executed in other embodiments of the present invention)
-It is a chart.

In the device of the present embodiment, when the activation switch 62 is operated many times due to mischief or the like, the number of times that the match determination result of the unique code for each switch operation becomes "mismatch" is determined for a predetermined period of time. However, if the start switch 62 is repeatedly operated more than a predetermined number of times within a certain period of time, this is determined to be a '6s tamper' and the system goes down. It is configured to do this.

Suppose that all the doors of the vehicle are locked, and the driver carrying the card-type transmitter 30 attempts to unlock the driver's side door to enter the vehicle. Explain.

As the start switch 62 is turned on, power is supplied to each circuit, the CPLJ 53 is activated, and the interrupt process shown in FIG. 8 is executed.

When this interrupt processing starts, first step (301)
Through the process, it is determined whether the flag Flag is set to 1 or not.

This flag F flag is for storing whether or not interrupt processing by the activation switch is prohibited (hereinafter, this flag will be referred to as a time limit prohibition flag).

It is now assumed that the time limit prohibition flag Flag is not turned off and that interrupts by the start switch are not prohibited.

Therefore, the next step (302) is below Jsu]! 11
has been executed and now the start switch 62 is turned ON and 13
Since the person is the driver who carries the card QS transmitter 130, the content of the counter m for counting the number of times the start switch 62 is turned on within a certain period of time Ti is 1; Steps (302) to (305)
), the next step (30) in FIG.
8) The following processing is executed.

Step (308) The following process is to confirm that the ignition key has been removed from the key cylinder, then transmit a request signal, and in response to this request signal, the card is returned from the card type transmitter 30. After receiving the unique code signal from the side, the received unique code signal is compared with the unique code signal preset on the vehicle body side, and if they match, the door lock actuator is driven. If the door is locked, unlock it.
If the door is in an unlocked state, it is a process of locking the door.

FIG. 12 shows a process executed in the card type transmitter 30, which is a process for transmitting the unique message stored in the memory when a request signal is received.

Next, for example, due to a child's mischief, the start switch 6
The case where 2 is turned ON many times will be explained.

First, in response to the first ON operation of the starting switch 62, the interrupt process shown in FIG. 8 is executed. In this case, since the time limit prohibition flag F lap is in a reset state, the processing from step (301) onwards is executed.

In the process of step (3'02'), it is determined whether or not the content of the counter I for counting the number of ON operations of the start switch 62 within the above-mentioned certain period of time is 0.
Since the counter m=Q now, the process of step (303) is performed and a predetermined software timer TI is started.

When the process of step (303) is executed, the timer T1 process shown in FIG. 9 is executed in parallel with the interrupt process of FIG. 8.

This timer T1 processing includes steps (331) to (333).
) for a certain period of time (for example, 1 minute)
After the time has elapsed, the counter m is reset to 1 and the timer T1 is reset.

On the other hand, in the interrupt processing shown in FIG.
After the process of step 03), the process of step (304) is executed to increment the counter m.

Then, in the next step (305), the counter l
is less than or equal to a predetermined reference value M (for example, 5''), and since the number of times the start switch 62 has been turned ON by mischief is once, m-1 The result of this determination is No, and the following is the first
The process shown in Figure 1 is executed.

In this case, the person committing the mischief does not have the card type transmission 6130, so the unique code signal is not received, and therefore the 17I! i Unlocking is also not performed. Note that the process in step (310) returns if the predetermined time determination result is No. and,
If the activation switch 62 is repeatedly turned on by mischief before the timer T1 processing ends, the contents of the counter m become equal to or greater than the reference value M (that is, equal to or greater than 5), and the determination result in step (305) becomes YES. Then, the time limit prohibition flag F is set by the process of the next step (306).
1 is set in lag.

Then, in the next step (307), the timer T2 is started at 1-. By this star processing of timer T2, timer l-2 processing shown in FIG. 10 is started.

This timer T2 processing is performed in steps (371) to (37).
4,), the predetermined time T2 (for example, several minutes) is set to 1, and when the predetermined time T2 has elapsed, the counter ■ and the time limit prohibition flag Flag are reset, and the timer T2 is reset. be.

In this way, in the device of this embodiment, even if the start switch 62 is repeatedly turned on within the predetermined time T1 due to a child's mischief, the start switch 62 is turned on when the number of times exceeds the predetermined number M. The locking/unlocking operation caused by the ON operation of the start switch can be prohibited, and the overflow request signal will not be transmitted when the start switch is turned ON, thereby preventing the wastage of the power of the vehicle battery. After the locking/unlocking operation is prohibited, the normal state is restored after the predetermined time T2 has elapsed, so that there is no problem with the usage fees such as driving fi.

(Effects of the Invention) As explained above in detail, in the vehicle locking control device of the present invention, even if the starting switch is turned on many times in succession due to, for example, a child's mischief, each time Therefore, it is possible to prevent unnecessary transmission of the riffist signal, which requires a relatively large amount of power, and to avoid wasting the power of the on-vehicle battery.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the schematic configuration of the vehicle tIfi lock control device according to the prior application, Fig. 2 shows the external appearance of the device and how it is mounted on the vehicle, and Fig. 3 shows the configuration of the present invention. FIG. 4 is a block diagram showing the electrical configuration of a J-hub card type transmitter connected to a device according to an embodiment of the present invention, and FIG. FIGS. 6 and 7 are circuit diagrams showing the configuration, flowcharts 11-1 and 11-12 show the processing executed by the vehicle body side control device installed in the same embodiment, and FIGS. 1 is a flowchart 1 showing a process executed in the embodiment apparatus of FIG. 100... Portable transmitter 101... Receiving means 102... Unique signal matching means 103... Switch 104... Lock actuator driving means 105...
・Lock actuator 106...Counting means 107...Time prohibition means 30...Card type transmitter 40...Vehicle body side control device 62.63...Start switch 33.53...Micro combination Coater 34...Memory 31.41a-41d...Loop antennas 65-67
...Relay Flag...Timed prohibition flag Patent applicant Nissan Motor Co., Ltd.

Claims (1)

[Claims] (1) Portable transmitter that wirelessly transmits a predetermined unique signal
a receiving means installed on the vehicle body and receiving the unique signal; a switch installed on a predetermined part of the vehicle body outputting a signal to start the locking/unlocking operation; and when the switch is operated. response-L/T; unique signal verification means for determining whether or not the unique signal received by the receiving means matches a unique signal preset on the vehicle body side; locking a predetermined portion of the vehicle body; A lock actuator that performs an unlocking operation; A lock actuator driving means that drives the lock actuator only when the switch is operated and it is determined that the unique signals match; Each time the switch is operated; a counting means for counting M1 the number of times that it is determined to be a "mismatch" among the results of the determination made by the unique signal matching means; when the number of times that the said "mismatch" is determined exceeds a predetermined number within a certain period of time; and a time limit prohibiting means for prohibiting the IM unlocking operation by the switch operation for a certain period of time.