JPH075063B2 - Anti-theft device for automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to any door, bonnet, trunk or back door of an automobile by an illegal means or method other than a key (hereinafter, the trunk or back door is referred to as a trunk. ) Relates to an anti-theft device for a vehicle that issues an alarm when the lock is released.

(Prior Art) In recent years, an anti-theft device has been developed that issues an alarm when a locked door, hood or trunk of a car is opened by an illegal means or method other than a key, and is actually installed in a car.

This type of vehicle anti-theft device, for example, switches to a standby state when a switch or the like provided in a hidden place of the vehicle is operated, and if an unauthorized means other than the key is used, the door of the vehicle, etc. It was configured to give an alert as soon as it was opened.

By the way, in an automobile equipped with such an anti-theft device for an automobile, in order to remove an object from the trunk after getting off, the lock of the trunk is released before getting off, and the switch is mistakenly operated immediately after getting off. However, there is a problem that the driver is surprised by the alarm, and the passenger cannot enter the standby state until the trunk is closed. (Object of the Invention) The purpose is to eliminate the above-mentioned problems in the anti-theft device for vehicles, the purpose of which is to put the trunk into the standby state and the standby release state by a predetermined operation. When it is closed, it shifts to the standby state,
When the trunk is opened with the key, the ON signal of the trunk key cylinder switch causes the standby release state,
Furthermore, by keeping the ON signal of the trunk key cylinder switch for a predetermined time, it is possible to prevent a sudden alarm from being issued due to a time lag between the opening and closing of the trunk and the key operation. An object of the present invention is to provide an anti-theft device for a vehicle, which is put in a standby state and has improved safety even if there is.

(Structure of the Invention) Therefore, according to the present invention, as shown in FIG. 1, when a predetermined operation such as keyless locking of a door on the driver's side of a vehicle is performed, a standby state in which an alarm is issued after a predetermined time elapses The apparatus 1 is provided. An abnormality signal is input to the standby device 1 from the abnormality detection device 2 when at least an abnormality related to theft occurs, such as when any door, bonnet, trunk or the like of the automobile is unlocked by means other than the key. To be done. When the standby device 1 is in the standby state and the abnormality detection device 2 outputs an abnormality signal, the alarm device 3 issues an alarm in response to a command from the standby device 1. Specifically, this alarm is issued by turning on and off the horn (horn) of the automobile, blinking all turn signal lamps, and the like.

That is, the alarm device 3 keeps a constant time until a predetermined time elapses after the door on the driver's seat side of the automobile is keyless locked and the standby device 1 enters the standby state, for example, the door of the automobile is set to the inner lock knob. No alarm is issued even if the lock is released by operation. Then, only after it is confirmed by the standby device that the predetermined time has passed, even when the inner lock knob is operated, it is assumed that any of the doors of the automobile is unlocked by means other than the key and an abnormality related to theft occurs. An abnormality signal is output from the abnormality detection device 2 and an alarm is issued from the alarm device 3.

Further, when the trunk key cylinder switch is turned on, the on signal is maintained for a predetermined time to maintain the standby release state, and when the trunk is closed, the standby state is restored. And while opening the trunk by key operation,
Even if the key cylinder switch is turned off by turning off the key before the trunk switch is turned on, it is possible to return to the standby state without issuing an alarm for the predetermined time.

(Effect of the Invention) According to the present invention, when the operation of shifting to the standby state with the trunk or back door opened in advance is not performed, the standby state does not immediately occur, and when the trunk or the back door is closed, the state shifts to the standby state, Also, when the trunk or back door is opened with the key, the standby state is temporarily released, and when the trunk or back door is closed, the state changes to the standby state again. There is no need for an operation to transfer.

Further, as described above, the signal from the trunk key cylinder switch is processed and the standby release state is maintained for a predetermined time, so that there is a time lag between the opening and closing of the trunk and the key operation, that is, luggage on the trunk. Even if I put it and operated the key, the trunk switch was still off with the trunk half-opened, and when I opened the trunk after that, the key cylinder switch was already off, and in such a case an alarm is issued. When the trunk is closed, there is an effect that the safety can be further improved by putting the trunk in the standby state even within the predetermined time.

(Example) Hereinafter, a specific example of the present invention will be described with reference to FIGS. 2 to 7.

In FIG. 2, a control unit 11 has a function as the standby device 1 of FIG. 1, and is composed of a one-chip microcomputer and its accompanying components.

The control unit 11 includes input terminals 11a, 11b, ...
o, Output terminals 11p, 11q, ..., 1 that output the signal to command the alarm
It has 1u, a power supply terminal 11v, and a ground terminal 11w.

The input terminal 11a of the control unit 11 is connected to the ignition terminal IG1 of the ignition switch 12. The ignition switch 12 is turned on until a key (not shown) is inserted and turned to a predetermined position or more until it is turned back to be pulled out, and when the key is pulled out, A keyless switch 13 that is turned off while it is inserted and rotated to a predetermined position is provided. The keyless switch 13 has a positive (negative) pole of a battery B grounded via fuses F ₁ and F _2. (Positive) pole and input terminal 11b of control unit 11
Is connected between and. Further, as shown in FIG. 3, between the input terminal 11c of the control unit 11 and the ground, between the input terminal 11d and the ground, and between the input terminal 11e and the ground, as shown in FIG. The door key cylinder switch 16L provided on the door 15L, the door key cylinder switch 16R provided on the driver side door 15R, and the key cylinder switch 18 provided on the trunk (back door in the case of a 5-door vehicle) 17 are connected. Has been done.

As shown in FIG. 3, a front lock link switch 19R provided on the driver side door 15R is connected between the input terminal 11f of the control unit 11 and the ground.

Between the input terminal 11g of the control unit 11 and the ground, as shown in FIG. 3, a front lock link switch 19L provided on the passenger side door 15L and a left door 20L on the rear seat are provided. The rear lock link switch 21L provided and the rear lock link switch 21R provided on the right door 20R of the rear seat are connected to each other.

Between the input terminal 11h of the control unit 11 and the ground, as shown in FIG. 3, the inner lock switch 22R provided on the driver side door 15R and the passenger side door 15L are provided. The inner lock switch 22L is connected.

Similarly, between the input terminal 11i of the control unit 11 and the ground, as shown in FIG. 3, an inner lock switch 23L provided on the left door 20L of the rear seat,
The inner lock switch 23R provided on the right door 20R of the rear seat is connected.

By the way, a mechanism for locking and unlocking the door 15R of the automobile 14 is provided inside the outer handle 24 and the door 15R provided outside the door 15R, as shown in FIG. 4 for the driver side door 15R. Inner handle 2
5, the door lock mechanism 27 is operated through the lock mechanism 26.
When the door key cylinder 28 or the inner lock knob 29 is operated to the lock side, the lock mechanism 26 operates to operate the outer handle 24.
And the action of the inner handle 25 is blocked, and the door is locked.

In FIG. 4, the key cylinder switch 16R is turned on only during the key operation period of the door key cylinder 28, and turned off in other states. Further, the inner lock switch 22R is turned on when the inner lock knob 29 is operated in the unlock position direction. In addition, lock link switch 19
R is turned on when the lock mechanism 26 is unlocked.
The mechanism for locking and unlocking the door 15L on the passenger side also has the same configuration as that in FIG.

The door key cylinder 28 is not provided on the rear seat doors 20L and 20R.

Referring again to FIG. 2, the door switch 31 on the passenger side is provided between the input terminal 11j of the control unit 11 and the ground.
L, the left side door switch 32L and the right side door switch 32R of the rear seat are connected. The cathode of a diode D ₁ is connected to the input terminal 11j of the control unit 11, and the anode of the diode D ₁ is connected to a fixed contact of a room lamp switch 67 described later.
A door switch 31R on the driver's side is connected between the input terminal 11k of the control unit 11 and the ground,
Further, the cathode of the diode D ₂ is connected to the input terminal 11k of the control unit 11, and the anode of the diode D ₂ is connected to the fixed contact of the room lamp switch 67.

The four door switches 31L, 31R, 32L and 32R are turned on when the doors 15L, 15R, 20L and 20R are opened, and turned off when the doors are closed.

A trunk switch 33, a bonnet switch 34, a lift sensor 35 and an option switch 36 are connected between the remaining input terminals 11l, 11m, 11n and 11o of the control unit 11 and the ground, respectively.

Here, the relationship between the on / off states of the switches described above and the states of the members to which these switches are attached is as shown in the following table.

On the other hand, the output terminal 11p of the control unit 11,
Between through fuse F ₃ with the connected power line lB to the positive pole of the battery B, set in the standby state the motor vehicle anti-theft device generates an alarm when the door 15R and the like is opened by means other than the key A security lamp 37 is connected to confirm the operating state of the system by sequentially lighting or blinking during the process.

A drive coil for the starter cut relay 38 is provided between the output terminal 11q of the control unit 11 and the power line 1B.
X ₁ is connected. This starter cut relay 38
The relay is for shutting off the power supply to the starter solenoid 39 so that the engine of the automobile 14 cannot be started when the alarm is issued. One end of the normally closed contact X _1- b of the starter cut relay 38 is an ignition switch.
Connected to 12 starter terminals ST. If the vehicle 14 has an automatic transmission (not shown) between the other end of the normally-closed contact X ₁ -b and the ground, an inhibitor switch 41 and a starter solenoid 39 are connected in series. Connected to. The inhibitor switch 41 is turned on when the shift lever of the automobile 14 is in the N (neutral) or P (parking) range, and the engine can be started only in the N or P range.

The horn switch 42 is connected between the output terminal 11r of the control unit 11 and the ground, while the drive coil X ₂ of the horn relay 43 and the fuse F ₄ are connected between the output terminal 11r and the power supply line 1B. Are connected in series. One end of the normally open contact X ₂ -a of the horn relay 43 is connected to a power supply line lB through fuse F _4, the horn 44 between the other end and ground normally open contacts X ₂ -a of the horn relay 43 and 45 And are connected in parallel.

Turn signal lamps 51, 52 and 53 are connected between the output terminal 11s of the control unit 11 and the ground, and a contact 55 of a hazard switch 54 is connected between the output terminal 11s and the power line 1B. And flasher 56 are connected in series.

Turn signal lamps 57, 58 and 59 are connected between the output terminal 11t of the control unit 11 and the ground.

Output terminal 11s and output terminal 1 of the control unit 11
Between the 1t is connected normally closed contact X ₃ -b for the relay 61, further, the output terminal 11s is combination switch 62 for direction indication
It is connected to the fixed contact 62L on the left turn side, and the output terminal 11t
Is connected to the right-turn side fixed contact 62R of the combination switch 62. A normally open contact X ₄ -a of the relay 63 is connected between the movable contact 62 c of the combination switch 62 and the flasher 56.

₄ drive coils for relay 63 and ₃ drive coils for relay 61
Has one end connected to the ignition terminal IG1 of the ignition switch 12 and the other end connected to the ground through another contact 64 of the hazard switch 54.

In FIG. 2, 65 and 66 are room lamps, 67 is a room lamp switch, 68 is an alternator, the power supply terminal 11v of the control unit 11 is connected to the power supply line 1B through the fuse F ₅ , and the earth terminal 11w. Is connected to the ground. Next, the operation of the vehicle antitheft device having the above structure will be described with reference to the flowcharts shown in FIGS. 5, 6 and 7.

The anti-theft device for an automobile shown in FIG. 2 has a state in which the door 15R on the driver's side of the automobile 14 is keyless-locked from a state before the door 15R is keyless-locked, and the door 15R is in a standby state after a predetermined time, and is in an alarm state or an alarm state. Until the release, the operation from mode 0 to mode 6 in the following (a) to (g) is performed.

(A) Mode zero is an operation when a key is inserted in the ignition switch 12, and after the label initialization of step 1001 from the start of step 1000 in FIG. 5, steps 1002, 1003, 1004 and 1005 are performed. Is performed by executing.

(B) Mode 1 is an operation when the key is removed from the ignition switch 12 but the door 15R on the driver's side is not yet opened. In the mode 1, the security lamp 37 blinks for 30 seconds, Indicates that the mode 1 status is set. Mode 1 is step 1002,1003,10 in FIG.
This is done by executing 06,1007,1008,1009,1010 and 1011.

(C) In mode 2, the key is removed from the ignition switch 12, the driver side door 15R is opened, and the other door 1
The operation when either 5L, 20R, 20L, bonnet 30 (see Fig. 3) or trunk 17 is opened,
In the mode 2 state, the security lamp 37 blinks for 30 seconds. Mode 2 is step 1002,1003,1006,1 in FIG.
Perform 012,1013 and steps 1014,1015,1016 or 10
After performing any of the 17 steps 901, 902 and 903
Is performed by executing.

(D) In mode 3, the key is removed from the ignition switch 12, the driver side door 15R is opened, and the other doors 15L, 20R, 2
0L, trunk 17 and bonnet 30 are all closed, and the operation when lock link switches 19R, 19L, 21R, 21L of all doors 15R, 15L, 20R, 20L are off,
In the mode 3 state, the security lamp 37 lights for 30 seconds. Mode 3 is step 1002,1003,1006,1 in FIG.
This is done by performing 012,1013,1014,1015,1016,1017,1018,1019 and 1020.

(E) Mode 4 is an operation before the door 15R on the driver's seat side is keyless locked and the alarm standby state is entered. In the mode 4 state, the security lamp 37 is lit for 30 seconds. Mode 4 is step 1002, 1003, step 1006 to 10 in FIG.
This is done by executing 11, and 1021-1032.

If any of the bonnet 30, doors 15R, 15L, 20R, 20L, or trunk 17 is open when the count up is determined in step 1025, and if the option switch 36 is turned on again, Subroutine 1002
Return to and continue the mode 4 state.

(F) Mode 5 is a standby operation, and the security lamp 37 blinks six times at intervals of 1.5 seconds. Mode 5 is performed by executing steps 2001 to 2014, 2026, 2016, 2017, 2032 of FIG.

(G) Mode 6 is an operation in the alarm state and when the alarm state is released. Mode 6 is performed by executing steps 3001 to 3013 in FIG.

Next, the operation of the vehicle antitheft device shown in FIG. 2 will be described step by step from mode 0 to mode 6.

(A) Mode Zero Is the engine of the automobile 14 (see Fig. 3) running?
When the key is inserted in the ignition switch 12, the control unit 11 (see FIG. 2) moves to the 5th position.
After executing steps 1000 and 1001 in the figure, a subroutine for checking the state of each related switch is executed in step 1002, and it is determined in step 1003 whether the keyless switch 13 is on. Key is ignition switch
If it is plugged in 12, in step 1004, the keyless switch 13 is turned off and the driver side door switch 31R is never turned on (TJCNT ←
0), in step 1005, set the mode to zero (MODE ←
0). Then, steps 1002, 1003, 1004 and 1005 are executed.

(B) Mode 1 When the key is removed from the ignition switch 12 in the mode 0 mode, the control unit 11 executes step 1006 and the door switch 31R of the driver side door 15R
Is on or off (Door 15R is open or closed)
If it is determined that the door 15R is closed, step 1007
Then, it is determined whether or not the mode is currently 4.

Since the mode is zero at this point, the control unit 11 executes step 1003, and further determines whether or not the current mode is. Since the mode is zero at this point, the control unit 11 proceeds to step 1009.
After setting the mode to 1 (MODE ← 1), the security lamp 37 blinks for 30 seconds (SET30). In step 1011, the control unit 11 turns off the keyless switch 13 and turns on the door switch 31R (T
JCNT = 1) Determine if there is any. At this time TJ
Since CNT = 0, the control unit 11 again executes the steps 1003, 1006, 1007, 1008 from the subroutine 1002, but since the mode is 1 at this time, the step 1011 is executed next. After that, the steps 1003, 1006, 1007, 1008 and 1011 from the subroutine 1002 are repeatedly executed.

(C) Mode 2 In the mode 1 state, the driver side door 15R opens,
When the door switch 31R is turned on, the control unit 1
1 executes steps 1006 to 1012, the keyless switch 13 is off and the door switch 3 on the driver side door 15R
After executing the set that 1R is turned on (TJCNT ← 1), in step 1013 the door switch 31R is off and the lock link switch 19R needs to be judged for 4 seconds (FKCNT ← 1).
Set it to 0). The control unit 11 then
The determinations in steps 101 to 1017 are performed, and the door switches 31L, 32R, 32L other than the driver's seat are turned on and off, the trunk switch 33 is turned on and off, the bonnet switch 34 is turned on and off, and the front lock link on the passenger side. Switch 19
L, rear lock link switches 21R, 21L ON / OFF is determined. When at least one of these switches is turned on, the control unit 11 determines in step 901 whether it is currently in mode 2. At this point, the mode is 1, so the control unit 11
Executes step 902 and sets mode 2 (MODE ←
2) After that, in step 903, the security lamp 37 is set to 30.
Blink for seconds. The control unit 11 executes the steps 1003, 1006, 101 from the subroutine 1002 at the following timing.
After executing steps 2 and 1013 to steps 1014 to 1017, execute step 901 to execute subroutine 100
Return to 2 and repeat this loop.

(D) Mode 3 In the above state, door switches other than the driver's seat 31L, 32R, 32L
Is off, the trunk switch 33 is off, the bonnet switch 34 is off, and both the front lock link switch 19L and the rear lock link switch 21R, 21L on the passenger side are off, that is, the doors 15L, 20R, 20L other than the driver's seat Then, when both the trunk 17 and the bonnet 30 are closed and all the lock link switches 19R, 19L, 21R, 21L are turned off, the control unit 11 sets the mode 3 in step 1019 (MODE ← 3), and the step 1020. Turn on the security lamp 37 for 30 seconds.

Next, the subroutine 1002, steps 1003 and 1006, and steps 1012 to 1018 are executed. At this time, the mode is 3, and the process returns from the step 1018 to the subroutine 1002.

Thereafter, the subroutine 1002, steps 1003 and 1006, and steps 1012 to 1018 are repeatedly executed.

(E) Mode 4 Next, in the state of the above mode 3, the door 15 on the driver side
When R is keyless locked, that is, when the keyless switch 13 is off and the door switch 31R is off, the control unit 11 sets the current mode to 4 at step 1007.
Or not. Since the mode is 3 at this point, the control unit 11 determines in step 1008 whether the mode is 1, temporarily sets the mode to 1 in step 1009, and executes step 1010 again. To do.

After that, in step 1011, the control unit 11 has the keyless switch 13 turned off and the door switch 31R turned on (TJCNT = 1), that is, the key is pulled out from the ignition switch 12, and the driver side It is determined whether the door 15R has been opened. At this point, the key has been pulled out of the ignition switch 12 and the door 15R on the driver's side has been opened, so the control unit 11 executes step 1021 and the front lock link switch 19R on the door 15R on the driver's side is executed. Is determined to be off.

At this time, since the door 15R on the driver's side is keyless locked, the front lock link switch 19R is off and the control unit 11 determines in step 1022 whether or not the mode is currently 4. Since the mode is set to 1 at this point, in step 1023, after starting the count for waiting grace that defines the time from when the door 15R on the driver side is keyless locked until it enters the waiting state, At step 1024, the mode is set to 4 and the subroutine 1002 is again executed although it is not specifically shown or described.
The security lamp 37 is lit for 30 seconds when the subroutine 1002 is executed again.

The control unit 11 determines in step 1025 whether or not the count started above is counted up. Since the count is not up at this point, the control unit 11 starts another count in step 1034, returns to the subroutine 1002 again, and executes steps 1003, 1006, 1007. At this point, the mode is 4, so after executing steps 1021 and 1022, steps 1025 and 1034 are executed, and then step 100
Return to 2. After that, until the count started in step 1023 is counted up, the control unit 11
Repeats the above operation.

When the above-mentioned count is counted up after the waiting grace period has elapsed, the control unit 11 performs steps 1026, 1027,
1028 and 1029 are executed sequentially, and the bonnet switch 34,
Option switch 36, door switch other than driver's seat 31L, 3
It is determined whether or not the 2R, 32L and the trunk switch 33 are off. When at least one of the bonnet switch 34, the option switch 36, the door switches 31L, 32R, 32L and the trunk switch 33 is turned on, the control unit 11 restarts the above another counting at step 1034. , And returns to the subroutine 1002 to repeat the above operation.

At this time, if the transformer switch 33 is turned on, the control unit 11 sets 30
After setting to increase the elapsed seconds, the above another counting is started in step 1034.

In this state, when the bonnet switch 34, the option switch 36, the door switches 31L, 32R, 32L and the trunk switch 33 are all turned off, the counting start is repeated and the other counting is started, and the control is started. Unit 11 determines in step 1030 whether this count has been incremented. This count is counted up in about 1.5 seconds from the start of counting to the counting up. Therefore, hood 30, door 15L, 20
When any of the R, 20L, the trunk 17, etc. is closed but not completely closed and reopened, the above count is restarted and not counted up. That is, the incomplete closing operation of the bonnet 30, the doors 15L, 20R, 20L, the trunk 17, etc. prevents the standby state from being entered.

When the other count is incremented, the control unit 11 executes step 1031
In 1035, it is determined whether or not the state of counting 30 seconds executed in steps 2025 and 2027 described later (TKCNT = 1).

At this point, since TKCNT = 1 is not satisfied, the control unit 11 executes step 1032, and the door switch 31R,
31L, 32R, 32L is off, lock link switch 19R, 19L, 2
Judgment is unnecessary for 4 seconds when 1R and 21L are off (FKCNT = 1)
Or not.

When TKCNT = 1, the control unit 11 executes step 1035 and determines the above-mentioned 30-second count.

(F) Mode 5 If FKCNT = 1 is not set, counting is started for 3 minutes in step 2001 as shown in FIG. This is to prevent the alarm state from being entered when a child or the like remains in the passenger compartment of the automobile 14 and the inner lock knob 29 is inadvertently operated. When 30 seconds have passed with TKCNT = 1 and FKCNT
When = 1, the counting is not started for these 3 minutes.

After that, the control unit 11 sets the mode to 5 in step 2002 (MODE ← 5), and in step 2003, turns off the door switches 31R, 31L, 32R, 32L and the lock link switch 1
9R, 19L, 20R, 20L OFF state is set to the one that needs to be judged for 4 seconds (FKCNT ← 0), and in step 2004, the initial value of the lift sensor 35 at the parking position of the automobile 14 is stored or the lift sensor is stored. Set the initial position of 35 (lift sensor set).

In the subroutine 2005, the control unit 11 reads the outputs of all the above-described switches such as the door switches 31L, 31R, 32L, 32R, and the bonnet switch 33 of the automobile 14 and the lift sensor 35, that is, the output of each sensor. In the following steps 2006 to 2020, it is determined whether or not an abnormal signal is output from these sensors.

That is, the control unit 11 executes the above step 20.
In steps 2006 to 2008 of 06 to 2020, if it is determined that any one of the lift sensor 35, the door switches 31R, 31L, 32R and 32L or the bonnet switch 34 is turned on, it enters the standby state for 3 minutes. The alarm state described below is entered regardless of whether or not it is within the range.

When the control unit 11 determines in step 2009 that the input terminal 11a is turned on, the keyless switch 13 is turned off, and if an attempt is made to start the engine without using a normal key, the control unit 11 goes into an alarm state and becomes keyless. switch
If 13 is on, that is, if the normal key is used to start the engine, the process returns to the label initialization (subroutine 1001) in FIG.

The control unit 11 also enters the alarm state when it is determined in step 2010 that the option switch 36 is on.

The above steps 2009 and 2010 are also executed regardless of whether it is within 3 minutes after entering the standby state.

After executing step 2010, the control unit 11 determines whether the inner lock switches 21R, 21L, 23R, 23L are on or off, that is, determines whether the inner lock knob 29 is operated to the unlock position side. If the inner lock knob 29 is moved to the unlocked position by a careless operation such as a child remaining in the vehicle, at step 2023, T ₃
After starting the second counting, in step 2024, it is determined whether or not the counting for 3 minutes already started in step 2001 has counted up (whether 3 minutes have elapsed since entering the standby state). To do.

If the standby state is within 3 minutes, that is, the careless operation of the inner lock knob 29 to the unlocked position by a child or the like left inside the keyless locked vehicle 14 within the standby state is within 3 minutes. If so, the control unit 11 sets FKCNT to 1 in step 2028 (F
KCNT ← 1), the mode is set to 4 again in step 2029, the lift sensor 35 is released from the set state in step 2030, and the process returns to the subroutine 1002 in FIG.

After that, the control unit 11 enters the standby state and becomes 3
From this subroutine 1002, step 1003,1 within minutes
006,1007,1021,1022,1025 thru 1032,2002 thru 2011,2
The loop of 023 and 2024 is repeatedly executed, but when the inner lock knob 29 is operated, the front lock link switch 19R, 19L or the rear lock link switch 21R, 2 is slightly delayed.
One of the 1L is turned on and the control unit 11 starts from the subroutine 1002 to steps 1003, 1006, 1007, 1021, 1036.
Is executed and the loop returning to the subroutine 1002 is repeated.

During execution of this loop, when the inner lock knob 29 is returned to the lock position and the front lock link switches 19R, 19L or the rear lock link switches 21R, 21L are turned off,
The control unit 11 executes steps 1003, 1006, 1007, 1021, 1022, 1025 to 1032, 2002 to 2014, 2026, 2016, 2017, 2032 from the subroutine 1002, and the subroutine 20
Return to 05. After that, the control unit 11 uses the subroutine 2005, step 2006 to 2014,2026,2016,2017,2032
Then, the loop returning to the subroutine 2005 is repeatedly executed to enter the standby state.

In step 2023 above, T ₃ seconds counting is started, but this is because the front lock link switch 19R, 19L or the rear lock link switch 21R, 21L is slightly delayed with respect to the operation of the inner lock switch 22R, 22L, 23R or 23L. Considering that it may operate, when the operation time of the inner lock knob 29 is extremely short, by turning on the front lock link switch 19R, 19L or the rear lock link switch 21R, 21L after the above operation,
This is to prevent the alarm state from being immediately recognized by erroneously recognizing that it was turned on by an operation other than the inner lock knob 29.
In other words, if the inner lock switch 22R, 22L, 23R or 23L is turned off within 3 minutes of being in the standby state, the control unit 11 will change from 2012 to 2024, 202 while counting T ₃ seconds.
8 through 2030, then return to subroutine 1002 to repeat the loop of steps 1003, 1006, 1007, 1021, 1022, 1025 or 1032, 2002 or 2012, 2024, 2028 or 2030, with front lock link in between. switch
Either 19R, 19L or rear lock link switch 21R, 21L is turned on. When either the front lock link switch 19R, 19L or the rear lock link switch 21R, 21L is turned on, the control unit 11 causes the subroutine 1002 to step 1003, 1006, 1007, 1
The loop of executing 021, 1036 and returning to the subroutine 1002 again is repeatedly executed. Unless the doors 15R, 15L, 20R, 20L of the vehicle 14 and the trunk 17 are illegally opened after 3 minutes in the standby state, the control unit 11 is in the subroutine 2005, steps 2006 to 2014, 20.
From 26,2016,2017,2032, the loop to return to the subroutine 2005 again is repeatedly executed, and the virtual standby state is entered.

During this standby, the lift sensor 35, door switches 31R, 31L, 3
When any of the 2R, 32L, the bonnet switch 34, or the option switch 36 is turned on, and when the ignition switch 12 is turned on and the keyless switch 13 is turned off, all of them are in an alarm state described later.

Also, when the trunk key cylinder switch 18 of the trunk 17 is turned off, the trunk switch 33 is turned on, and the T ₁ second count is increased, the alarm state described later is also set. this
The T ₁ second count depends on the variation when the trunk key cylinder switch 18 and the trunk switch 33 are assembled.
This is to prevent an alarm from being accidentally generated when opening 17. That is, if the trunk key cylinder switch 18 is off but the trunk switch 33 is turned on, the control unit 11
These trunk key cylinder switches 18 and trunk switches after ₁ second has passed without an immediate alarm
If the trunk key cylinder switch 18 is off and the trunk switch 33 is on even after T ₁ second has elapsed, the alarm state is determined as the unauthorized opening of the trunk 17 and the alarm state is set.

On the other hand, even if the trunk switch 33 is turned on, if the trunk key cylinder switch 18 is turned on within T ₁ second, the control unit 11 returns from step 2025, 2027 to 2030 to execution of the subroutine 1002 in FIG. Steps from 1002 to 1003,1006,1007,1021,1022,1025
Through 1029, 1033, 1034 and again subroutine 1002
The loop returning to is repeated, the standby state is released, and then the trunk 17 is closed, the standby state is resumed. It should be noted that the reason why 30 seconds counting is started in step 2037 is that, for example, when luggage is placed on the trunk 17,
Even if the trunk 17 is opened by a normal key operation, the trunk 17 is opened only halfway, and the trunk switch 33 remains off. In this case, the trunk 17 is manually opened. At this time, the trunk key cylinder switch 18 has already been turned off, which causes an alarm state, but this is for preventing this.

The torkey cylinder switches 16R and 16L are turned on only while keys are being operated.However, even if the door key cylinder switches 16R and 16L are turned on by normal key operations, do the following. Then, the standby state is released.

For example, when the door key cylinder switch 16R is turned on by a normal key operation, the control unit 11 starts the key cylinder timer count in step 2031.

By the way, there is the same situation between the door key cylinder switch 16R and the lock link switch 19R as in the trunk key cylinder switch 18 and the trunk switch 33.
Is turned on at a timing after the door key cylinder switch 16R is turned on and when the door key cylinder switch 16R is turned on.
It may be turned on at the timing before R is turned on.

The operation in these two cases will be described below.

[When the door key cylinder switch is turned on first] When the lock link switch 19R is turned on after the door key cylinder switch 16R is turned on, the control unit 11 executes steps 2016 to 2031,
After starting key cylinder timer counting, step 2017
, It is determined that the lock link switch 19R is off,
The process returns from step 2032 to the execution of subroutine 2005.

After that, when the lock link switch 19R is turned on, the control unit 11 executes the determination of the key cylinder timer up counting started at step 2018.

Normally, the lock link switch 19R is turned on when the door key cylinder switch 16R is turned on,
Since the lock link switch 19R is turned on at least until the timer expires after the door key cylinder switch 16R is turned off, the control unit 11 is
It is assumed that the door lock has been normally released, and at step 2021, the key cylinder timer and the lock link timer are raised and the routine returns to the subroutine 1001 in FIG. 5 and the standby state is released.

[When the lock link switch is turned on first] If the lock link switch 19R is turned on before the door key cylinder switch 16R is turned on, the control unit 11 executes steps 2016 to 2017 and the lock link switch 19R is turned on. After it is determined that the key cylinder timer is up, it is determined in step 2018. In this case, since the key cylinder timer count is not normally started, the control unit 11
It is determined that the key cylinder timer has expired, the steps 2019 and 2033 are executed, and the process returns to the subroutine 2005.
And until the lock link timer is up, subroutine 2005, steps 2006 to 2014, 2026, 2016 to 2019,
The loop that returns from 2033 to subroutine 2005 again is executed repeatedly. Lock link switch 19R with normal key operation
If is turned on, even if there is a delay in the on-time of the door key cylinder switch 16R due to variations in the assembly of the door key cylinder switch 16R and the lock link switch 19R, the door key cylinder switch 16R Turn on and control unit 1
1 executes step 2021 and executes the subroutine 100 of FIG.
It returns to 1 and the standby state is released. Further, when the door key cylinder switch 16R is not turned on before the lock link timer is up, it means that a normal key operation is not performed, and at this time, an alarm state is set.

Note that the release of the standby state by the door key cylinder switch 16L is also performed in the same manner as above.

(G) Mode 6 When any of the situations in which the above-mentioned alarm should be issued occurs from the mode 5 state, the control unit 11 starts counting the alarm duration of 3 minutes in step 3001 of FIG. The mode is set to 6 in step 3002.

Then, the control unit 11, a solenoid X ₁ of the starter cut relay 38 shown in FIG. 2 and outputs a signal of "low" level from its output terminal 11q at step 3003 energizes, the normally closed contact X ₁ -B is turned off so that the engine cannot be started. Also the control unit
In step 3004, 11 outputs a "low" level signal from the optional output terminal 11u. By connecting an alarm device (not shown) composed of, for example, a voice synthesizer between the optional output terminal 11u and the power supply line 1B, it is possible to give an alarm that the vehicle 14 is in a stolen state.

Next, the control unit 11 determines in step 3005 whether or not the count is up for 3 minutes, and if the count is not up for 3 minutes, the control unit 11 proceeds to step 30.
At 06, the output of the output terminal 11r is periodically set to the “low” level and the “high” level, the drive coil X ₂ of the horn relay 43 in FIG. Generates an alarm sound intermittently.

At the same time, the control unit 11 periodically sets the outputs of its output terminals 11s and 11t to "low" level and "high" level in step 3007 to turn the turn signal lamps 51, 52, 53, 57, 58 of FIG. Flashes 59 and 59.

The control unit 11 executes a routine for reading the outputs of the door key cylinder switches 16R, 16L, the keyless switch 13 and the input terminal 11a in the subroutine 3008, and then in step 3009, the door key cylinder switches 16R, 16L
Turn on / off L at step 3010 with keyless switch 1
Turn on / off 3 and input terminal 11a in step 3011.
ON and OFF are judged respectively.

That is, when the door key cylinder switches 16R and 16L are off and the keyless switch 13 is off, or when the door key cylinder switches 16R and 16L are off and the keyless switch 13 is on and the input terminal 11a is off, the above three minute count is made. The alarm action is performed until it goes up.

Door key cylinder switch even during the above alarm operation
When 16R and 16L are turned on, or when the keyless switch 13 and the input terminal 11a are turned on, the control unit 11 returns to the subroutine 1001 in FIG. 5 and the alarm state is released.

If the count is incremented for 3 minutes, the control unit 11 determines in step 3012 that the horn relay 43
The energization of the drive coil X ₂ is stopped, and then the blinking of the turn signal lamps 51, 52, 53, 57, 58 and 59 is stopped in step 3013 to stop the alarm operation.

Note that the starter cut relay 38 continues to be turned on and continues to output a "low" level signal from the optional output terminal 11a.

According to the embodiment described above, after the door 15R on the driver's side of the automobile 14 is keyless locked, it is systematically confirmed whether it is possible to shift to the standby state within a predetermined time, and it is confirmed. Since I am trying to enter the standby state only when
That is, when the doors 15L, 20R and 20L, the bonnet 30, the trunk 17, etc. other than the driver's seat side of the automobile 14 are opened at the time of keyless lock, they are not put into the standby state immediately but waited when they are closed thereafter. Since it is set in the state, the alarm state is not accidentally set.

Further, when the trunk key cylinder switch is turned on, the on signal is maintained for a predetermined time to maintain the standby release state, and when the trunk is closed, the standby state is restored. For this reason, while opening the trunk by key operation, even if the key is removed and the key cylinder switch is turned off before the trunk switch is turned on, the standby state does not occur during the above specified time and no alarm is issued within the trunk. You can return to the stand-by state by closing the trunk after putting things in and out.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the outline of an anti-theft device for a vehicle according to the present invention, FIG. 2 is a concrete circuit diagram of an embodiment of an anti-theft device for an automobile according to the present invention, and FIG. Fig. 4 is an explanatory view of the mounting position of the door key cylinder switch,
Explanatory views showing the relationship between the inner lock switch and the lock link switch and the mechanism for operating these switches, FIGS. 5, 6, and 7 explain the operation of the vehicle antitheft device of FIG. It is a flowchart for. 1 ... Standby device, 2 ... Abnormality detection device, 3 ... Alarm device.

Claims (1)

[Claims] 1. A standby device other than a key and a standby device which is brought into a standby state and a standby release state by a predetermined operation, and which is in a standby state when the trunk or back door is opened when the standby state operation is performed and then closed. When any door of the car is unlocked by the means of, or when the trunk or back door is opened, the abnormality detection device outputs an abnormality signal, and the standby device is in the standby state and the abnormality detection device outputs the abnormality signal. An alarm device that outputs an alarm when output is provided, and the standby device maintains an on signal for a predetermined time to maintain the standby release state when the trunk or back door key cylinder switch is turned on, and the trunk or back door is closed. If (the trunk switch or back door switch is turned off), it will be in the standby state even within the above specified time. Automobile anti-theft device, characterized in that the return.