JPS60261873A - Radio type unlocking 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) The present invention relates to a wireless unlocking control device for a vehicle that locks and unlocks door locks and the like without using a mechanical key.

(Background of the Invention) The present applicant previously proposed a ``radio wave key system j'' in Japanese Unexamined Patent Publication No. 59-240754.

This radio wave type key system is used, for example, to lock and unlock the doors of a vehicle or unlock the trunk (that is, open the trunk).

In this system, instead of a mechanical key, the driver always carries a portable transmitter/receiver (hereinafter referred to as a portable device), and when the driver turns on an activation switch installed near the door handle of the vehicle door or near the trunk clock. , a request signal is wirelessly transmitted from a vehicle-side control device (hereinafter referred to as an on-vehicle device).

On the other hand, the portable device wirelessly transmits a vehicle-specific code signal to the on-vehicle device in response to receiving the request signal. The in-vehicle device receives this unique code signal, compares it with the pre-registered unique code, and only if both codes match, it determines that the user is a medium-sized user and locks/unlocks the doors or locks the trunk. This is to unlock the door.

In addition, this system uses an induced electromagnetic field with high distance attenuation as the communication medium, taking into consideration radio wave interference to surrounding wireless devices. Furthermore, the antenna on the mobile device side and the antenna on the vehicle body transmit induced electromagnetic fields.

It is a loop antenna that is effective for reception.

According to this system, the owner of the portable device can lock and unlock the device by simply turning on the activation switch within the communication area, so there is no need to take out the mechanical key every time. Furthermore, even if the mechanical key is left behind in the vehicle, it can be locked and unlocked, which is extremely convenient.

By the way, when carrying luggage into a vehicle frequently, for example, when doing business or shopping, especially when carrying luggage with both hands, it is possible to eliminate the need to operate the start switch. Convenience will further improve.

Furthermore, since the start switch is located outside the vehicle, it may freeze and become inoperable in the winter, especially in cold regions. It is very effective to avoid doing this.

(Purpose of the Invention) This invention provides a method for unlocking a door lock or trunk lock without operating a start switch when a predetermined operator installed on a portable device or a vehicle is operated. The purpose is to enable the above-mentioned convenience.

(Structure of the Invention) FIG. 1 (Δ) is a claim correspondence diagram showing the structure of the first invention.

In the same figure, a portable device 100 is equipped with a predetermined operator 101, and in response to an operation of this operator 101, a unique=
Repeatedly transmits the 1-code signal wirelessly.

The in-vehicle reception Ia 102 is always set to a reception standby state,
And mobile41. , O, O can receive the unique code (gtan) from the portable device 100 only when they approach an opening/closing object such as a vehicle door or trunk.

The code matching means 103 matches the received unique code on the side of the portable device 100 with a preset unique code on the vehicle body side.

The first stage unlocking control 104 unlocks the lock n structure of the opening/closing body in response to the code matching means 103 verifying that both codes match.

FIG. 1(B) is a claim correspondence diagram showing the configuration of the second invention.

In the figure, an on-vehicle transmitter 201 repeatedly transmits a transmission request signal wirelessly from then on in response to the operation of a predetermined operator 203 provided on the vehicle side.

Portable device 200 wirelessly transmits a unique code signal in response to receiving a transmission request signal wirelessly transmitted from vehicle-mounted transmitter 201 .

The 111-mounted receiver 202 is always set to a reception standby state after the operator 203 is operated, and the portable device 2
A unique code signal from 00 can be received.

The code matching means 20/1 matches the received unique code on the side of the portable device 200 with a preset unique code on the vehicle body side.

The unlocking control means 205 controls the unlocking mechanism a of the opening/closing body in response to the =1-code matching means 204 verifying that both codes match.

(Explanation of Embodiment) Fig. 2 is a circuit diagram showing the configuration of a portable device according to an embodiment of the first invention, and Fig. 3 is a circuit diagram showing the configuration of the vehicle body side control device. be.

As shown in FIG. 17, the portable device 30 is formed into a thin plate shape approximately the size of a credit card, and is carried by the driver in the same way as a conventional mechanical key. Further, a timer switch 18 (consisting of a momentary type push button switch in this example) is provided at a predetermined position on the outer surface of the portable device 30.

The portable device 30 includes a receiving loop antenna 1 and a transmitting loop antenna 2. A capacitor 3 is connected in parallel to the receiving loop antenna 1. , a passive parallel resonant tuning circuit 25 is constructed.

The IC signal received by the tuning circuit 25 is transmitted to the analog switch 4. The signal is input to the microcomputer 8 via the detection circuit 5 and the amplifier circuit 6.

The negative power output circuit 7 is negative because it outputs a positive pulse of 0 to 3 V output from the micro combi coater 8.

A power source is formed and supplied to the amplifier circuit 6. This negative power supply is
This is necessary to bring the bias of the amplifier 6a in the amplifier circuit 6 to the operating point OV.

Further, a unique code storage circuit 9 is connected to the microcomputer 8, and this unique code storage circuit 9
Each digit is 4 bits, and 4-digit unique code data is supplied to the micro combi coater 8.

Further, the microcomputer 8 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 15 and converted into a modulated pulse train signal containing a carrier wave component of a predetermined frequency. So, buffer 14. The signal is supplied to the transmitting loop antenna 2 via the high frequency transistor 13.

The timer switch 18 is a push button switch provided at a predetermined position on the outer surface of the portable device 30 (see FIG. 17). The 1″ level timer ¥3e is supplied to the microcomputer 8. In this invention,
While the micro combi coater 8 is being supplied with the timer signal e at the 'l-1' level, the portable device 30 is configured to intermittently transmit a unique=1-code signal, as will be described later.

On the other hand, the on-vehicle device 40 is mainly configured with a microcomputer (hereinafter referred to as CPU) 53, as shown in FIG. This CPU 53 is a microprocessor, I1
0 interface circuit, memory and timer.

The loop antennas 418, 41b are arranged at predetermined intervals in the vicinity of the trunk lock (in FIG. 16, inside the resin bumper).

Another pair of loop antennas 4. IC, 41d is the 16th
As shown in the figure, one loop antenna 410 is disposed near the driver's seat door, and the other loop antenna 41d is disposed within the driver's seat side door mirror.

41. to the loop antenna 41a. As shown in FIG. 16, starting switches 63 and 64 are mounted at predetermined positions on the outer surface of the driver's side door and the trunk in accordance with d.

A 90-degree phase shifter 43.4'l is connected to each of the loop antennas 41'b and 41d, whereby the transmitted and received signals are phase-shifted by 90 degrees.

In response to the switching signal S1 from the CPU 53, the switching circuits 4'6a and 4.6b switch the trunk side antenna pair (hereinafter referred to as trunk lock control antenna) 41a,'
llb or driver side antenna pair (hereinafter referred to as door lock control antenna) 41G.

This is a switch circuit that activates one of the antenna pairs 41d.

The door switch 57 is a switch that detects the open/open state of the driver's side door, and is turned on when the door is open and turned off when the door is closed.

The trunk switch 61 is a switch that detects the open/closed state of the trunk, and is a trunk open rON.

It turns off when the trunk is closed.

The key switch 59 is a switch that is turned on when the key is inserted into the ignition key cylinder and turned off when the key is removed.

The lock state detection switch 62 is a switch that detects the door lock state, and is turned off when the door is locked.

It roars when the door is unlocked. In addition, 58 is a door switch for detecting opening/closing of the passenger seat side door d5 and the rear seat side door, and 60
is a lock knob switch that turns on when the lock knob on the driver's side door is pushed in.

The power start detection circuit 54 is activated when even one of the switches 57 to 64 is turned on (however, if the switch 57.6
2 is driven for a predetermined period of time (when switching between ON and OFF), and the power supply 55 supplies power to each circuit. Also, C.P.
When the power supply holding signal S3 arrives from the LI 53, it is related to the operation of the switches 57 to 64 (power supply is maintained).

The relay 65 is activated when the transistor Tr+ is turned on by the trunk lock unlocking signal S8 from the CPtJ53, and drives the trunk lock unlocking solenoid.

Relay 66 and relay 67 receive door lock signal S7 and door lock unlock signal S6 from CPU 53, respectively.
When the transistors Tr2 and Tr3 are turned on, they are activated and drive the locking/unlocking motor.

Further, a unique code plug 70 is connected to the CPU 53 via a multiplexer 69.

As a result, one piece of vehicle-specific code data corresponding to the unique code of the portable device 30 described above is supplied to the CPLI 53.

FIG. 4 shows a portable device 30 according to an embodiment of the first invention.
5 to 8 are flowcharts showing the processing contents executed by the CPU 53 in the vehicle-mounted machine 40. FIGS.

The flowchart in Figure 4 starts (by battery connection)
Then, flag F is reset to "O" in the initial processing of step (400). This flag F is O
Transmission of the unique code signal is possible in the reset state of '', and transmission of the unique code signal is stopped in the set state of PA1°'.

Next, it is determined whether a signal has been received (step 401).
, if no signal is received, the process proceeds to step (405), where it is determined whether or not the timer switch 18 is set to '1-bi'.

When the timer switch 18 is "L", that is, before the timer predetermined time has elapsed, then the flag F is set to 1+0II.
It is determined whether or not (step 406) flag F is '0''.
If so, a process of transmitting the unique code signal once is executed (step 407).

This unique code signal transmission process reads unique code data stored in advance in the unique code storage circuit 9, outputs a pulse train signal corresponding to the read unique code data to the oscillation circuit 15, As described above, this is a process of transmitting via the transmitting loop amplifier 2.

When the unique code signal is transmitted, a timer in the microcomputer 8 is started, and after the timer time T has elapsed, the process returns to step -('401>) and the above-described process is repeated.

Therefore, when the output of the timer switch 18 is in one state of "T", the unique code signal is repeatedly transmitted every hour T.

Meanwhile, in the main routine on the in-vehicle device 40 side shown in FIG. 5, the ignition key is removed (step 5).
00), and thereafter enters a reception standby state, and in this state, all circuits are in operation except for the transmission system circuit including the modulator 499, oscillator 50, and the like.

In addition, in this state, the antenna switching signal 8 is sent from the CPU 53.
S+ is always supplied to the switching circuits 46a and 46b, and the receiving antenna is connected to the door lock control antenna 4.1a,
411) side and trunk [1 control antenna 410.
41d side and is ready to receive the unique code signal.

First, in step (501), the receiving antenna is set to the door lock control antenna 410.41d side, and it is determined whether or not a unique code signal can be received (step 502).
.

If a specific]-code signal is received, the flag F2 is set to ○'' (Step 503), and if the reception is not received, the trunk lock control antenna 41a is set.

41b side, and it is determined whether or not the unique codes 4F, . . . , Q are received. Here, if it is determined that there is a reception, the flag F2 is set to "1".

When the unique code signal is received, the unique code on the vehicle body side is read from the multi-prefernator 69, and the received unique code: '-
8 are verified (steps 507 and 508).

If the two codes do not match, the lock/unlock control is not performed because the portable device 30 does not match the vehicle.

On the other hand, if it is determined that both ]-does are a "match", then it is determined whether the content of the flag F2 is "0" or ii1u.

If flag F2 is 0'' and the door is locked (
The determination result in step 510 is YES), step (51
Proceeding to step 1), door 1 cock is unlocked and the door lock is unlocked.

This is a process in which a door lock/unlock signal S6 is output from the CPU 53, which turns on the transistor J', activates the relay 67, and rotates the locking/unlocking motor in the normal direction to unlock the door.

On the other hand, flag F2 is 1° and the trunk switch is off.
When F (1-rank door closed state), trunk lock unlocking processing is performed (steps 512 and 513).

This is the trunk lock release signal S8 from the CPU 5'3.
is output, which turns on the transistor T1'1.
Then, the relay 65 is activated and the unlocking solenoid is driven to unlock the trunk. J5,
In this case, as is well known, the trunk lid will be automatically opened by a spring.

In this way, in this invention, by turning on the timer switch 18 of the portable device 30, the unique code signal is transmitted repeatedly intermittently, so that the portable device 30 can be used without operating the activation switch 63- or 64. When the owner of the machine 30 approaches the vehicle door or trunk lock, the lock is automatically unlocked.

As described above, when the door lock or trunk lock is unlocked, a stop request signal is output that prompts the user to stop transmitting the unique code signal (step 514).

On the mobile device 30 side, upon receiving the stop request signal,
The determination result in step (402) is NO, and the flag F
is set to "1" (step 404), and thereafter automatic transmission of the unique code signal is stopped until the timer switch 18 is turned on again.

Further, when any of the switches 57 to 64 is operated while the main routine is being executed, the interrupt process shown in FIG.

In this interrupt processing, addresses n, n+1, etc. of the boats that have switched are sequentially stored in order (steps 600 and 601>, then the panoco boat data at address n is read and actions are taken according to the contents). A subroutine is executed (step 701).This interrupt processing is executed sequentially until there is no data at address n.

Now, to explain the case where the start switch 63 is turned ON and an interrupt is generated, as the start switch 63 is turned ON, steps 600-÷601→700→701 are executed, and the subroutine shown in FIG. 8 is executed. be done.

When the subroutine shown in FIG. 8 is started, it is first determined whether or not the ignition key has been removed (step 800). If the key is inserted, it is assumed that the driver is in the vehicle, and the following locking/unlocking process is performed. is not carried out.

If the key is handled, a transmission request signal output process (step 801) is executed, and a transmission request signal is transmitted.

When the unique code signal returned from the portable device 30 in response to this transmission request signal is received (step 80
2>, the unique code on the vehicle body and the received unique code are compared (Sluttub 803.80/1.), and if both codes match, the door will be locked if it is unlocked (step 806), and the door will be locked in the locked state 111i. If so, it is unlocked (step 807). In other words, normal locking/unlocking using the activation switch can also be used.

Thereafter, steps (700) to (704) are executed sequentially, and when there is no more data at address n, the process returns to the step of the main routine before the interrupt, and each step of the main routine is subsequently executed.

Next, FIG. 9 is a circuit diagram showing the configuration of characteristic parts of an on-vehicle device according to an embodiment of the second invention, and FIG. 10 is a circuit diagram showing the configuration of the same portable device. The configuration of the on-vehicle device is as follows:
Only the characteristic parts are shown, and since the other configurations are the same as those in FIG. 3, the same reference numerals will be omitted and the explanation thereof will be omitted. In addition, the configuration of the portable device is also similar to the timer cutout 4182 in Fig. 2.
Since the components are the same except for the time constant circuit 19 and the inverter 20, the same reference numerals will be used and the explanation thereof will be omitted.

In the second invention, a timer switch 65 is provided on the vehicle-mounted device 40 side, and the timer switch 65 is a momentary type push button switch attached to, for example, an instrument panel of the vehicle.

In addition, the CPU 53 of the on-vehicle device 40 is connected to the switch 57 and 65.
When any one of them is turned on, it is driven for a predetermined time, and power is supplied from the power reply 55 to each circuit.

Next, the operation of this embodiment apparatus will be explained according to the flowcharts shown in FIGS. 12 to 15.

First, the driver pulls out the key.

Next, when the timer switch 65 is turned on, a transmission request: L strike signal is transmitted every predetermined time TB according to the routine shown in FIG. 12 (described later).

Next, it is assumed that the driver gets out of the car with the portable device 3o in his possession and locks the door. Then, when the door is locked (the door lock state detection switch 62 is turned OFF), the interrupt process shown in FIG. 14 is performed.

This interrupt processing is performed by the routine shown in FIG. 12 after the door is locked. When the request signal is sent, a unique code signal is sent back to the portable device 307 in response. This is a process to prevent the door from being unlocked again. After the door is locked, locking/unlocking of the door is prohibited by the process of step (14°O) (hereinafter referred to as door request prohibition). ).While this door request is prohibited, only the trunk lock control antennas 41a and 41b are activated, and therefore the door lock control antennas 41c and 41b are activated.
From 4.1d onwards, no transmission request signal is transmitted.

Next, start timer 1°3 in the CPU 53 (
Step 1401): After sufficient time has elapsed for the driver to leave the vehicle and go out of the communication area, wireless locking/unlocking of the door is permitted again (hereinafter referred to as door request permission). ) (FIG. 15, step 150.0>).

When the timer switch 65 is turned on and the process shown in the flowchart shown in FIG. 12 is started, it is first determined whether or not the ignition key is being inserted into the key cylinder, and if it is being inserted, the following process is performed. is not executed (step 1200>).

When the key was removed, CI) evening inside U53.

Immediately after T1 reaches star 1, the following process is executed until a predetermined period of time A (for example, 2 hours) of Tine T+ has elapsed.

First, the trunk lock unlocking control is executed, and in step (1202>) it is determined whether the trunk switch is OFF or not. If the trunk switch is OFF (trunk lock locked state), the antenna switching signal S1 is The loop antenna is output to the trunk lock control antenna 41.
8.41b is executed (step 12
03>.

Next, in the process of step (1204>), the antenna for outputting the transmission riffist signal is specified as the trunk lock control antenna l4Ila, 41b, and the address A1 after the end of the communication subroutine is stored in register 8, and the communication shown in FIG. Jump to subroutine.

In the communication subroutine, in the process of step (1300), step <1-20'4. ) is executed, and the transmission request signal is transmitted wirelessly on a predetermined carrier wave.

On the other hand, the transmission request number ji is received by the portable device 30, which is always in the sympathetic samurai state (step 1100).
Then, the unique code is read from the unique code storage circuit 9 (
Step 1102), the corresponding pulse train signal a is sent to the oscillation circuit 15. It is transmitted as a unique code signal via the transmitting b-loop antenna 2.

On the vehicle-mounted device 40 side, the above-mentioned unique code signal is received (
Step 1301) and the solid '4: iT, 1- on both sides of 11
the 12th code is read (step 1302>, then the 12th
In the process of step (1205') in the figure, it is determined whether or not the received unique code matches.

When it is determined that the two codes match, the trunk lock unlocking signal $8 is output and the trunk lock is unlocked (the trunk door is opened) (step 120).
6).

On the other hand, if it is determined in step (1301>) that the unique 71-code is not received, or the same code is received.

Even if the signal is received, the verification result is ``mismatch''.
In the case of °, the process of step (1207) is executed next.

In step (1207), it is determined whether or not the door request is permitted. If the door request is permitted, then it is determined whether or not the door is locked (step 120.8). If the door is locked, a loop is made. Switch the antenna to the door lock control antenna 410, 41d (step 1209)
,,Next, proceed to (Step 1'210>.□ In Step (1210>, the antenna for transmitting the transmission request signal is connected to the door lock control antenna 4ic, 41
d side, the contents of register A are set to A2'', and processing is performed to jump to the communication subroutine.

In the communication subroutine, as described above, a process is performed to output a transmission request signal to the door lock control antennas 410 and 416 (step 1300), and then it is determined whether or not the unique code signal can be received (step 13).
01).

Unique = 1 - If the code 8 is received, the unique code on the vehicle side is read (Step 1302 > If the comparison results of both codes match, the door lock unlock signal s5 is output and the door lock is unlocked. (Steps 1211.1212').

Further, if the unique code is not received, or if the unique code is "unmatched" even if the unique code is received, the door is not unlocked and the process proceeds to step ('1213>).

In step (1213), it is determined whether the timer T1 has reached a predetermined timer time TA (for example, between two stations) or whether there is a sound, and if the timer time TA has not yet elapsed, a transmission request signal is sent. A timer T2 that determines the transmission interval is started (step 1214>, and after a preset time of 7 hours TB, the process returns to step (1202>), and the processes following step (1202) are executed.

In this way, when the timer switch 65 is turned on, the transmission request signal is intermittently transmitted from the in-vehicle device at time intervals of 1"B, so that the holder of the portable device 30 approaches the vehicle door or trunk. With the push button, the lock can be unlocked without operating the start switch 63 or 64.

(Effects of the Invention) As described above in detail, the first aspect of the present application. In the second invention, when a predetermined operator is operated, the door lock and trunk lock can be unlocked without operating the start switch, further improving the usability of the device. It becomes possible.

[Brief explanation of the drawing]

Figure 1 (A) is a claim correspondence diagram showing the configuration of the first invention, Figure 1 (B) is a claim correspondence diagram showing the configuration of the second invention, and Figure 2 is an embodiment of the first invention. 3 is a circuit diagram showing the configuration of the portable device in J5, FIG. 3 is a circuit diagram not showing the structure of the in-vehicle device, and FIG. 4 is a flowchart not showing the processing contents executed by the microcomputer on the portable device side of the first invention. , 5th episode~
FIG. 8 is a 70-diameter diagram showing the processing contents executed by the CPU on the vehicle's aircraft side, FIG. 9 is a circuit diagram showing the configuration of the characteristic parts of the vehicle-mounted device in an embodiment of the second invention, and FIG. A circuit diagram showing the configuration of the portable machine, Fig. 11 is a flowchart showing the processing contents executed by the microcomputer on the portable machine side of the second invention, and Figs. 12 and 15 are executed by the CPU on the side of the same vehicle. FIG. 16 is a perspective view showing the arrangement of the activation switch and the loop antenna of an embodiment of the device according to the first invention and the second invention, and FIG. 17 is the first invention. FIG. 2 is a perspective view showing the external appearance of a portable device included in the device according to the embodiment. 100.200... Portable device 101.203... Operator 102...... Vehicle receiver 10
3.204...=1-code matching means 104.205...
- Unlocking control means 201...... Vehicle transmitter 20
2・・・・・・・・・・・・In-vehicle receiver 30.4
．． 0......Microcomputer 18.6
5... Timer switch patent applicant E1 San Jidosha Co., Ltd. Figure 7 Figure 8 Figure 13 Figure 14 Figure 15

Claims (3)

[Claims] (1) A portable device that is equipped with a predetermined operator and repeatedly transmits a unique code signal wirelessly in response to the operation of the operator; The portable device is always set to a reception standby state, and the mobile device is connected to a vehicle. an in-vehicle receiver capable of receiving a unique code signal from the portable device only when approaching an opening/closing object such as a door or trunk; code verification means for verifying the code; and unlocking control means for unlocking the locking mechanism of the opening/closing body in response to the code verification means verifying that both codes match. Wireless unlocking control device for vehicles. (2) An on-vehicle transmitter that repeatedly transmits a transmission request signal wirelessly in response to the operation of a predetermined operator pressed on the vehicle side; a portable device that wirelessly transmits a unique code signal in response to the signal being received; after the operator is operated, the portable device is always set to a reception standby state; and the portable device is connected to a vehicle door, trunk, etc. an in-vehicle body transmitter capable of receiving a unique = 1-code signal from the portable device only when approaching the opening/closing body of the vehicle; code verification means for verifying a code unique to the side; and an unlocking control means for unlocking the locking mechanism of the opening/closing body in response to the code verification means verifying that both codes match. A wireless vehicle unlocking control device featuring: (3) Claim 2 is characterized in that means is provided for prohibiting communication between the in-vehicle transmitter/receiver and the portable device for a certain period of time after the operator is operated. The wireless unlocking control device for a vehicle described above.