JPS60159268A - 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 locking control device that wirelessly unlocks and locks door locks and the like in place of a mechanical key for a vehicle.

(Background of the Invention) The applicant of this application has in vain applied for patent application 1f (57-132118@
(Unreleased) In this case, ``Radio key system j to 11z
I'm making plans. This radio key system is applied to the door lock of a vehicle, for example, when the driver holds a transmitter instead of the key, and the person in possession of the transmitter operates the switch installed on the door. The door is unlocked or locked only when the door is locked.

FIG. 1 is a block diagram schematically showing the configuration of the radio key system A (hereinafter referred to as the vehicle locking system t2I). This card type transmitter u1 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,
Furthermore, a loop antenna 10 is provided on the window, and a switch is provided near the door handle of the driver's side door.

The card type feeder (;3+1) is always powered on and is in a state where it can receive a request signal 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 to unlock the door, the request signal generating circuit 11 in the control device 2 shown in FIG. 1 is activated. , a request signal is transmitted from the loop antenna 10 for a certain period of time. The request 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 request signal generation circuit 7 detects that the request signal is transmitted from the control device 2 on the vehicle 18 side, and activates the code signal generation circuit 8.

When the code signal generation circuit 8 operates, it outputs a code signal unique to the vehicle 18 (a code unique to each vehicle is set) that has been stored in the code storage circuit 9 in advance. and,
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.

In other words, on the vehicle side, a unique code signal transmitted from the card-type transmitter 1 is received by the loop antenna 10, and the received unique code (E, ,
Q converts the receiving/demodulating circuit 13 to the code matching circuit 1.
4.

The code matching circuit 14 determines whether or not the vehicle-specific code transmission 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 1G is driven only in this case.

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-type transmitter 1 side and the code signal registered in the control circuit 2 on the vehicle side match, so that, for example, the above-mentioned card Even if a person who does not have the type transmitter 1 attempts 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 tries to unlock the door, the door will not be unlocked in the same way. As a result, the card-type transmitter 1 has security similar to that of a conventional mechanical key.

In addition, since the card-type transmitter 1 can be used while stored in a pocket or bag, there is no need to take out the key every time the lock is unlocked or locked, unlike conventional mechanical keys. This can be omitted.

The actuator 17 is configured to reverse the door lock state each time the actuator is driven, and if the door lock is locked before driving, it will unlock the door, and if the door lock is unlocked before driving. If so, perform the locking operation.

By the way, in such a vehicle locking control device,
Since the card-type transmitter 1 is located near the vehicle-side control device 2 and the door is always locked or unlocked when the switch 12 is operated, for example, When the driver leaves the nonode type transmitter 1 inside the vehicle and then operates the switch 12 to lock the door, the door lock is locked and the card type transmitter 1 is removed. Furthermore, if such a situation occurs, since the card type transmitter 1 is inside the vehicle, if a third party operates the switch 12, the door lock will be unlocked. It is possible that the lock may be stolen.

(Purpose of the invention) This invention was made in view of the above circumstances, and an object thereof is to prevent a situation where a card-type transmitter as described above is left behind in a vehicle, and to improve theft prevention. .

(Configuration of the Invention) Hereinafter, the configuration of the present invention will be explained using the overall configuration diagram of FIG. 3.

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

The unique signal matching means 102 determines whether or not the received unique signal matches a unique signal preset on the vehicle body.

The switch 103 outputs a signal to start controlling the locking/unlocking operation of a predetermined part of the vehicle body such as a door lock, and the lock actuator driving means 104 outputs a signal to start controlling the locking/unlocking operation of a predetermined part of the vehicle body such as a door lock. Only when it is determined that the signals match, the lock actuator 105 is driven to lock/unlock the lock.

The alighting detection means 106 is a means for detecting that the driver alights from the vehicle, and when it is detected that the driver alights from the vehicle, the possession reminder means 107 detects that the portable transmitter 100 is in possession. to encourage people to come out.

(Description of Embodiment) FIG. 4 is a circuit diagram showing the configuration of a card-type transmitter 30 in an embodiment of the vehicle locking control device according to the present invention.

As shown in FIG. 4, the card type transmitter 4130 has two loop antennas, a receiving loop antenna 31 and a transmitting antenna 32, connected to a J-3, and a capacitor 33 is connected in parallel to the receiving loop antenna 31. . The loop amplifier 1 and the capacitor 33 constitute a passive parallel resonant tuning circuit 20.

The received signal received by the tuning circuit 20 is transmitted to the analog switch 34. The signal is input to a microcomputer 38 via a detection circuit 35 and an amplifier circuit 36.

The negative power output circuit 37 outputs a positive pulse of 0 to 3 volts output from the microcomputer 38 to form a negative power and supplies it to the amplifier circuit 36 . This negative power supply biases the amplifier in the amplifier circuit 36 to the operating point OV.
It is necessary to make it happen.

Further, three unique code storage circuits are connected to the microcomputer 38.
Reference numeral 9 supplies 4-bit, 4-digit unique code data to the microcomputer 38. Note that this unique code storage circuit 39 is, for example, a memory element such as a ROM (
It is also possible to form R, but in order to reduce costs, for example, a printed circuit board with a short circuit pattern for each pit is used, and depending on whether or not the short circuit pattern is cut, 1111 +, It is also possible to form data “O”.

Further, the microcomputer 38 performs an operation of outputting the unique code data as a serial pulse train signal, and this unique code signal d is inputted to the oscillation circuit 95 and converted into a modulated pulse train signal containing a carrier wave component of a predetermined frequency. Therefore, the buffer 94. High frequency transistor 93
The signal is supplied to the transmitting loop amplifier 32 via.

Further, the card type transmitter 30 is equipped with a small lithium battery 91 manufactured by Nagano Life, which is used in recent electronic watches, as a power source for each circuit.

A buzzer circuit 21 is connected to the microcomputer 38, and when the transistor 23 is turned on by the buzzer drive signal e outputted from the microcomputer 38, the buzzer 22 is driven and a buzzer sound is generated. The structure is as follows.

On the other hand, a control device 40 whose dimensions are 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 CPU) 53. This CPU 53 includes a micro processor unit, an I10 interface circuit, a memory (
(ROM, RAM, etc.) and a timer.

The antennas 41a and 41b are loop antennas installed near the trunk lock of the trunk of the vehicle, and are spaced apart from each other by a predetermined distance.

Another pair of loop antennas 41C and 416 are arranged near the driver's side door.
Loop antenna 1c is disposed within the mirror frame of the driver's side door mirror, and the other loop antenna 41d is disposed within the driver's seat.

Corresponding to the loop antennas 418 to 4.16, push button switches (hereinafter referred to as starting switches) 62 and 63 are attached at predetermined positions δ on the outer surface of the driver's side door and trunk.

One antenna 41b of each of the two pairs of loop antennas
, 41d are connected to a 90o phase shifter 42.4-3, whereby the transmitting signal and the receiving signal (g signal) are phase-shifted by 900°.

The switching circuits 4.6a and 46b respond to the switching signal S1 output from the CPU 53 to switch between the antenna pair 4 on the trunk side.
1a, 41b or driver side antenna pair 41c
, 41d is an analog switch circuit that activates one of the antenna pairs.

The A/D converter 47 inputs the received signal q received by the antenna 41d attached to the driver's seat via the high frequency amplifier 44, converts the level of this input signal into digital data, and converts the level of this input signal into digital data. The digital data is supplied to the CPU 53 as received signal strength data Rf.Furthermore, this A/D conversion operation is performed by the CPU 53.
It is executed in response to the arrival of the trigger signal $2 supplied from.

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

It turns off between the doors.

Similarly, the door switch 58 is a switch for detecting the open state between the passenger door and the two rear doors (in the case of a sedan). .

Key switch 59 is a switch for detecting whether or not a key is inserted into the key cylinder of the ignition key switch in the driver's cab, and turns ON when the key is inserted into the key cylinder. It is something.

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 lock the door.

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 start detection circuit 54 includes each of the switches 57 to 6.
If any one of 3 is turned on (but 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 PU 53 arrives, the power supply is maintained regardless of the operation of each of the switches, and the power supply is stopped when the CPU 53 enters the standby state. ing.

The relay 65 is driven when the trunk unlock signal S8 is output from the CPU 53 and the transistor Tr+ is turned on, and drives a solenoid (not shown) for unlocking the 1 to rank clocks to unlock the 1 to rank clocks. It is something that can be done.

Relay 66J3 and relay 67 are transistors rrz in response to door lock signal S7 and door unlock signal S6 output from CPU 53, respectively.

It is driven by turning on Te3, and the relay 66 reverses a motor (not shown) that automatically opens and closes the door lock to lock the door, and the relay 67 rotates the motor in the normal direction to unlock the door. It is a lock.

The alarm signal S outputted from the CPU 53 is No. 15, which causes the alarm drive circuit 68 to drive (in response to sounding the horn).

Further, a unique code is inputted from the CPU 53 via a multi-block 69.

Of course, the multi-break connector 69 receives three connectors for input, and all terminals of these connectors are opened at the time of manufacture.

Then, when this locking control device is sold and handed over to a user, the unique:"-domain plug 0 that was kept together with the card-type transmitter la 30 is inserted into the connector of the multi-branch 69.

This unique = 1 - code plug 0 is set to 4 to correspond to the unique code stored in the circuit of the card type transmitter 30.
The structure is such that corresponding pins are short-circuited to form code data of digits (each digit is represented by 4 bits).

By inserting such a unique code plug 70 into the connectors of the six multiplexers, unique code data is supplied from the multiplexer to the CPU 53.

Next, the flowcharts shown in FIGS. 6 and 7 are flowcharts showing the contents of the processing executed by the CPU 53 in the vehicle body side control device 40, and the flowchart shown in FIG. 3 is a flowchart showing the contents of processing executed by the microcomputer 38 in the computer 30.

The operation will be described below, taking as an example the operation when the vehicle stops and the driver gets out of the vehicle and attempts to lock each door.

In order for the driver to exit the vehicle, the driver must open the driver's door and exit the vehicle, and in this case, remove the ignition key. It is configured to detect that the driver exits the vehicle on the condition that the ignition key is opened and the ignition key is handled.

That is, when the driver's door is opened, the door switch 57 is turned on, and the door-to-door interruption process shown in FIG. 7 is executed.

When this interrupt process is started, a process of determining whether the ignition key has been removed from the key cylinder is performed in step 301. This determination process is performed by determining whether or not the key switch 59 is in the OFF state.

If it is determined that one key has been pressed, the next step 302 is executed, and the buzzer beep 1~ is added to the request code. A request signal with (=I added thereto) is transmitted and a process of overturning is performed.

The above request coat is NFJ specific right plug 7
In the device of this embodiment, the upper 8 bits of the 16-bit unique code data stored in the unique code plug 70 are stored as a request code.

Then, in the process of step 302, the LS of the request code read through the multiplier 69 is
Processing is further performed to add #II+ as a buzzer sounding bit to B, and as a result, processing is performed to output a 9-bit code to which the buzzer sounding bit has been added as a request signal.

On the other hand, on the card type transmitter 3o side, as shown in FIG.
In the process of step 401, a process of waiting for reception of a request signal is performed, and when a riffist signal is transmitted from the vehicle body control device 40, the determination result becomes YES, and the process of the next step 4.02 is performed. Then, processing for reading the received request signal is performed.

Then, in the process of the next step 403, the code of the received request signal (hereinafter referred to as the vehicle body request code) and the request stored in the unique code g1 circuit 39 in the card type transmitter 30]- Strike code (
Hereinafter, a determination process is performed to determine whether or not the ()j-code side, square 1, and code) match.

Then, if the double concave -1- is a "match", the next step 404 is performed, and the buzzer beep 1- is sent to the LSI3 of the received vehicle body request code.
Then, a process is performed to determine whether 1'' has been added to 11.

Then, the buzzer beeps (“1” goes on)] J
If so, the next step 405 is performed and the buzzer drive signal e is output.

In response to this, Fuzzer 22 went blind,
A shout is made to remind the driver to carry the card-type transmitter 30 by burning it.

Furthermore, if the driver does not actually have a card-type transmitter, it is very convenient to be able to know the location of the card-type transmitter 30.

Then, by the processing in the next steps /106 and 4.07, the buzzing sound is generated for one second and then stopped.

The card-type transmitter possession reminder process as described above is performed, allowing the driver to exit the vehicle without leaving the card-type transmitter 30 behind in the vehicle interior.

Next, when locking the driver's door after the driver exits the vehicle, the activation switch 6 is pressed after closing the driver's door.
All you need to do is turn on 2.

In response to the ON operation of the switch 62, the interrupt processing by the start switch 62 shown in FIG. 6 is started in the vehicle body control device 40.

When this II-inclusive process is started, a process for determining whether or not the ignition key has been removed is performed in the same manner as the process in step 301.

If it is determined that the ibnirashoku key has been removed, the next process of step 202 is executed, and a request signal transmission process is performed.

In the process of step 202, the vehicle body request code is read through the multiplexer, and the buzzer sounding bit is transmitted without adding (-1).

Then, in the process of the next step 203, the key code sent from the card type transmitter is received'+! One machine begins processing.

At this time, the card type transmitter 30 receives the request, so that the card type transmitter 30 performs step 40 in FIG.
1 becomes YES, the next step 402, 40
After the process of step 3 is performed, if the Ricoh L strike codes are found to match, the next process of step 404 is performed.

In this case, next time
Since I+ is not added (=J), step 408
The process is executed, and the keys are sent from the unique code storage circuit
”-code (this corresponds to the unique signal of the device of the prior application shown in FIG. will be transmitted from the transmission loop antenna 32.

And the above card iA! Key code from transmitter 30 (
When the signal (hereinafter referred to as the card side key code) is transmitted, the vehicle body side control device 40 performs step 203.
If the determination result is YES, then the process of step 204 is performed and the key code on the vehicle body side is read through the six multiplexers.

Then, in the next step 205, the received card-side key code and the vehicle body-side key code are compared to determine whether they match.

Then, if both are 1′ match”, the next step 20
6 is performed to determine whether or not the driver's door is currently locked. This is done by determining whether the lock state detection switch 61 is in the "OFF" position.

Since the driver is currently trying to lock the door, the driver's door is unlocked, so the process of step 208 is executed next to lock the driver's door. .

The operation at this time is that the door lock signal @S7 is output from the microcomputer 53, the relay 66 is driven, and the door lock motor of the driver's door is thereby reversed to lock all the doors (not shown). The lock mechanism locks all doors (all doors are locked when the driver's door is locked).

As described above, in the present embodiment, when the driver gets out of the vehicle, the card type transmitter 30 is notified by the buzzing sound that the driver is in possession of the card type transmitter 1 and 30.
This prevents the user from leaving the vehicle in the vehicle and leaving the vehicle.

Furthermore, when the driver is about to get into the vehicle with all the doors locked, all he has to do is turn on the start switch 62 in the same way. ;The interrupt processing shown here is executed and step 2
At step d3 in step 06, since the driver's door is locked, the next step 207 is executed, and the driver's door is unlocked.

To lock/unlock the trunk, the driver must press the activation switch 63 located near the trunk lid.
By performing the N operation, activation and unlocking will be performed in the same manner as the operations related to the door lock described above, and since these operations and the Narrow chart are the same, illustration and description thereof will be omitted.

Next, FIG. 9 shows a vehicle body side control device J of another embodiment of the present invention.
JI 4. FIG. 2 is a circuit diagram showing the configuration of O. Components 85 in the same figure that are the same as those of the apparatus of the embodiment shown in FIG.

As shown in the figure, the device of this embodiment has a vehicle body side control device f.
f 4.0 is provided with an indicator 72 and its drive circuit 71 for reminding the user that he or she is in possession of the card-type transmitter 30.

The indicator 72 is, for example, as shown in FIG.
It is located at the top of the door trim of the driver's door, and is easily visible when the driver exits the vehicle.

The processing performed by the CPU 53 a5 is as follows:
The interrupt processing by the start switch 62 is performed in the same manner as in the previous embodiment, and the interrupt processing by the door 17tl is as shown in FIG. 11 instead of the processing shown in FIG. 7.

Tanawara, by subtracting l'i0 from 1 to a, the first
When the S inserting process in Figure 1 is started, the next step 401
In the process of step 4, a determination process is performed to determine whether or not the ignition key has been removed, and if it is determined that the ignition key has been removed, the next step 4 is performed.
The process of 02 is executed, and the indicator drive signal O8.

The process of lighting up the indicator 72 is performed by outputting and overturning the output.

As a result, the driver notices that the indicator 72 is on (J). This prevents you from misplacing your 30s.

J3, the driving time of the indicator also stops at 12f'1 second.

Furthermore, although not shown, instead of lighting the indicator 72, a buzzer or the like may be driven to make a sound to remind the user that he/she is in possession of the card type transmitter 30.

Furthermore, instead of driving the indicator 72, a voice synthesis circuit may be connected to remind the user that the card type transmission is in possession of 3o using a synthesized sound or voice, such as, for example, ``Key Card Haomojidesuka''.

Other methods for detecting when the driver gets out of the vehicle include pressing a switch that turns 0N-OFF depending on whether or not weight is applied to the driver's seat seat 1, or
Various means can be considered, such as installing an infrared sensor that detects infrared rays emitted from the human body.

(Effects of the Invention) As explained in detail above, in the vehicle locking control device of the present invention, it is possible to more reliably improve theft prevention when a portable transmitter is left behind in the vehicle. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of the vehicle locking control 211 device related to the top, FIG. 2 is a diagram showing the appearance of the device and how it is mounted on a vehicle, and FIG. 3 is a block diagram showing the overall configuration of the present invention. Figure 4 is a block diagram showing the electrical configuration of a card-type transmitter according to an embodiment of the present invention.
The figure shows the electrical 4t of the vehicle body side control device in the same embodiment device.
Figures 6 and 7 are flowcharts showing the contents of the processing carried out in the vehicle body control device of the device of the same embodiment, and Figure 8 is a circuit diagram of the device of the same embodiment. (indicates the details of the processing executed in the card-type transmitter) [j
-Char]-1 Fig. 9 (J) A circuit diagram showing the electrical 4M configuration of the vehicle body side control device of another embodiment of the present invention, and Fig. 10 shows the arrangement of the indicator (d position FIG. 11 is a perspective view showing an example, and a flowchart showing the contents of the interruption caused by the door door of the IJ l1iJ embodiment. Signal verification means 103... Switch 104... Lock actuator driving means 105.・・・・・・・・・・・・・・・・Lock actuator 106・・・・・・・・・・・・・・・・
...Getting off the train detection means 107...
...Possession summoning means 30...
......Card type transmitter 40...
・・・・・・・・・・・・Vehicle side control device 38.53
・・・・・・・・・・・・Microcomputer 62.
63・・・・・・・・・Start switch 57.58
・・・・・・・・・Door switch 59・・・・・・
・・・・・・・・・・・・・・・Key switch 21・
・・・・・・・・・・・・・・・・・・Buzzer circuit 72・・・・・・・・・・・・・・・・・・Indicator 65.66.67 ...Relay patent applicant Nissan Motor Co., Ltd. Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] (1) A portable transmitter that wirelessly transmits a predetermined unique signal; A receiving means that is mounted on the vehicle body side and does not receive the unique signal; a lock actuator that locks and unlocks a predetermined part of the car body such as a door lock; a switch that outputs a signal to start lock operation; drive control means that drives the lock actuator only when the switch is operated and the unique signal verification means determines that the unique signals match J5; A locking control device for a vehicle, comprising: an alighting detection means for detecting that a driver alights from the vehicle; and a possession prompting means for reminding the driver to possess the portable transmitter when the alighting is detected and the IC is detected. (2) The vehicle locking control device according to claim 1, wherein the possession alerting means is provided in the portable transmitter. The vehicle locking control device according to claim 1, wherein the vehicle locking control device is provided on the vehicle body side. (4) The exit detection means is configured to detect when the driver's door is opened and the vehicle key is in the ignition. 2. The vehicle locking control device according to claim 1, wherein the vehicle locking control device detects when the driver gets out of the vehicle by detecting that the key is removed from the key cylinder.