JPH0340675Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Field of Industrial Application) The present invention relates to an anti-theft device for an automobile that issues an alarm when any door, bonnet, or trunk of an automobile is unlocked by unauthorized means other than a key. (Prior Art) In recent years, anti-theft devices have been developed that issue an alarm when a locked car door, bonnet or trunk is opened by an unauthorized means other than a key, and these devices are not actually installed in cars. There is. This kind of anti-theft device for cars goes into a standby state after operating a switch installed in a hidden place in the car, for example, and if
The system was configured to issue an alarm immediately if the door of the vehicle was opened by an unauthorized means other than the key. By the way, in a car equipped with such an anti-theft device, if someone other than the driver accidentally touches the switch, the switch will immediately go into standby mode. If the inner lock knob is turned to the unlock side, the alarm device will be activated. Also, if you release the lock on the trunk before getting off the car to take something out of the trunk after getting off the car, and then accidentally operate the switch immediately after getting off the car, an alarm will be issued and the driver will be frightened. There are also some problems. (Purpose of the invention) The present invention was made in order to solve the above-mentioned problems in conventional anti-theft devices for automobiles.
If the door is opened with the key removed from the ignition switch and then closed without using the key while maintaining the locked state, the door will enter the standby state after a certain amount of time. To provide an anti-theft device for an automobile, which systemically checks whether the device is valid or not, shifts to a standby state only when it is confirmed, and lights up a mode lamp depending on the operating state to eliminate erroneous operation. It is intended to. (Structure of the device) Therefore, as shown in Fig. 1, the device enters a standby state for generating an alarm after a predetermined period of time when a predetermined operation such as keyless locking of the door on the front seat side of a car is performed. A standby device 1 is provided. This standby device 1 is used when any door, bonnet, trunk, etc. of the above-mentioned automobile is unlocked by means other than the key, or when the automobile body is tilted due to theft of the automobile tires. When an abnormality related to at least theft occurs, an abnormality signal is input from the abnormality detection device 2. When the standby device 1 is in a 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 warning is performed by turning on and off the car's horn, blinking all turn signal lamps, and the like. That is, the alarm device 3 systematically checks whether it is okay to shift to the standby state within a predetermined time after a predetermined operation such as keyless locking of the front seat side door of the automobile is performed. , the system will only move to a waiting list if it is confirmed. After this standby device has transitioned to the standby state, if an abnormality related to at least theft occurs, such as when any door of the car is unlocked by means other than the key, the abnormality detection device 2 detects an abnormality. A signal is output, and the alarm device 3 issues an alarm. The standby device 1 lights up mode lamps M ₁ , M ₂ , ..., M _o indicating the current operation step according to each operation step from when the standby device 1 is set to the standby state until the alarm device 3 issues an alarm. let Therefore, the operation stage of the automobile anti-theft device can be known from the lit mode lamps M ₁ , M ₂ , . . . , _Mo. (Effect of the invention) According to the invention, when a predetermined operation is performed,
Since the system checks whether or not it is okay to shift to the standby state with a certain amount of time before shifting to the standby state, it is less likely to be set to the standby state by mistake. Further, since each operation stage of the automobile anti-theft device is displayed on the mode lamp, the driver can obtain information on the next operation to be performed from the mode lamp, thereby preventing erroneous operation. (Embodiments) Hereinafter, specific embodiments of the present invention will be described with reference to FIGS. 2 to 7. In FIG. 2, a control unit 11 has the function of the standby device 1 in FIG. 1, and is composed of a one-chip microcomputer and associated parts. This control unit 11 includes input terminals 11a, _11b , .
11p ₅ , output terminals 11q, . An input terminal 11a of the control unit 11 is connected to an ignition terminal IG1 of an ignition switch 12. The ignition switch 12 is turned on from when a key (not shown) is inserted and turned beyond a predetermined position until it is turned back and the key is pulled out; A keyless switch 13 is provided which is turned off while the key is inserted and rotated to a predetermined position.
It is connected between the positive (plus) pole of a battery B whose negative pole is grounded and the input terminal 11b of the control unit 11 via fuses F ₁ and F ₂ . Furthermore, as shown in FIG. A door key cylinder switch 16L provided on the door 15L of the vehicle, a door key cylinder switch 16R provided on the driver's side door 15R, and a key cylinder switch 18 provided on the trunk (back door in the case of a 5-door car) 17 are connected to each other. ing. Input terminal 11 of the control unit 11 above
As shown in FIG. 3, there are a door 15R on the driver's side and a door 15L on the passenger side
Front lock link switches 19R and 19L provided respectively are connected. Input terminal 11 of the control unit 11 above
As shown in Fig. 3, there are a rear lock link switch 21L installed on the left door 20L of the rear seat and a rear lock link switch 21L installed on the right door 20R of the rear seat. 21R are connected to each other. Input terminal 11 of the control unit 11 above
As shown in Fig. 3, an inner lock switch 22R provided on the driver's side door 15R and an inner lock switch 22L provided on the passenger side door 15L are connected between h and ground. has been done. Similarly, between the input terminal 11i of the control unit 11 and the ground, as shown in FIG. It is connected to an inner lock switch 23R provided at 20R. By the way, the mechanism for locking and unlocking the door 15R of the automobile 14 is provided on the outer handle 24 provided on the outside of the door 15R and on the inside of the door 15R, as shown in FIG. 4 for the door 15R on the driver's seat side. The action of the inner handle 25 is transmitted to the door lock mechanism 27 via the lock mechanism 26, and when the door key cylinder 28 or the inner lock knob 29 is operated to the lock side, the lock mechanism 26 is activated. The actions of the outer handle 24 and inner handle 25 are cut off, and the door is locked. In Fig. 4 above, key cylinder switch 1
6R is turned on only during the key operation period of the door key cylinder 28, and turned off in other states. In addition, the inner lock switch 22R is the inner lock knob 2.
It turns on when the switch 9 is operated toward the unlock position. Furthermore, lock link switch 19R
turns on when the lock mechanism 26 is unlocked. The mechanism for locking and unlocking the door 15L on the passenger seat side also has the same structure as that shown in FIG. 4. Note that the door key cylinder 28 is not provided in the rear seat doors 20L and 20R. Referring again to Figure 2, control unit 1
A left door switch 32L and a right door switch 32R of the rear seat are connected between the input terminal 11j of No. 1 and the ground. Further, the input terminal 11j of the control unit 11 is connected to the cathode of a diode _D1 . A door switch 31R on the driver's seat side is connected between the input terminal 11k of the control unit 11 and the ground.
The input terminal 11k of the control unit 11 is further connected to the cathode of a diode _D2 . The above four door switches 31L, 31R, 32
L and 32R are doors 15L, 15R, 20 respectively
It turns on when L and 20R open, and turns off when it closes. Remaining input terminal 11 of control unit 11
A trunk switch 33, a bonnet switch 34, an inclination sensor 35, and an option switch 36 are connected between 1, 11m, 11n, and 11o 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.

[Table] On the other hand, the output terminals 11p ₁ , 11p ₂ , 11p ₃ , 11p ₄ and 11p ₅ of the control unit 11
and power line lB connected to the positive terminal of battery B through fuse _F3 .
Mode lamps M ₁ , M ₂ , M ₃ , M ₄ and M light up or flash in sequence to confirm the operating status of the system during the process of setting the standby state to generate an alarm when 5R, etc. are opened. ₅ are connected respectively. Output terminal 11 of the control unit 11
A drive coil X ₁ of the starter cut relay 38 is connected between q and the power line lB.
The starter cutoff relay 38 is a relay that cuts off the power supply to the starter solenoid 39 when the above-mentioned alarm occurs, so that the engine of the automobile 14 cannot be started. One end of the normally closed contact X ₁ -b of the starter cut relay 38 is connected to the starter terminal ST of the ignition switch 12. In addition, if the automobile 14 is equipped with an automatic transmission (not shown), an inhibitor switch 41 and a starter solenoid 39 are connected in series between the other end of this normally closed contact X ₁ -b and the ground. connected to. The above 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 only be started in this N or P range. Output terminal 11 of the control unit 11
A horn switch 42 is connected between r and ground, while the output terminal 11r and the power line
Between lB and drive coil X ₂ of horn relay 43
and fuse _F4 are connected in series. One end of the normally open contact X ₂ -a of the horn relay 43 is connected to the power line lB through a fuse F ₄ , and the horns 44 and 45 are connected between the other end of the normally open contact X ₂ -a of the horn relay 43 and the ground. are connected in parallel. Output terminal 11 of the control unit 11
A turn signal lamp 5 is connected between s and ground.
1, 52, and 53 are connected, and a contact 55 of a hazard switch 54 and a flasher 56 are connected in series between the output terminal 11s and the power line IB. Output terminal 11 of the control unit 11
A turn signal lamp 5 is connected between t and ground.
7, 58 and 59 are connected. Output terminal 11 of the control unit 11
A normally closed contact _X3 -b of the relay 61 is connected between the output terminal 11t and the output terminal 11t.
s is connected to the left turn side fixed contact 62L of the direction indicating combination switch 62, and is also connected to the output terminal 11.
t is connected to the right-turn side fixed contact 62R of the combination switch 62. Combi switch 6 above
A normally open contact X ₄ -a of the relay 63 is connected between the second movable contact 62c and the flasher 56. Relay 63 drive coil X ₄ and relay 61
The driving coils X ₃ each have one end connected to the ignition terminal IG of the ignition switch 12.
1, and each other end is connected to ground through another contact 64 of the hazard switch 54. In addition, in FIG. 2, 65 and 66 are room lamps, 67 is a room lamp switch, and 6
8 is an alternator, control unit 11
The power terminal 11v of is connected to the power line lB through the fuse _F5 , and the ground terminal 11w is connected to the ground. Next, the operation of the automobile theft prevention system whose structure has been explained above will be explained based on the flowcharts shown in FIGS. 5, 6, and 7. The anti-theft system for an automobile shown in FIG. 2 starts from a state before the driver's side door 15R or the passenger's side door 15L of the automobile 14 is keylessly locked, and after a predetermined period of time, the door 15R or 15L is keylessly locked. It enters a standby state, and the following operations (a) to (g) from mode zero to mode 6 are performed until the alarm state or the alarm state is cancelled. (a) Mode zero is the operation when the key is inserted into the ignition switch 12,
After the label initialization in step 1001 from the start of step 1000 in FIG.
This is done by executing steps 002, 1003, 1004 and 1005. (b) In mode 1, the key is removed from the ignition switch 12, but the key is still on the driver's side door 15.
This is an operation when the R or passenger side door 15L is not opened, and in the mode 1 state, the mode lamp _M1 lights up for 30 seconds to indicate the mode 1 state. Mode 1 is the 5th
Steps 1002, 1003, 1006,
This is done by executing steps 1007, 1008, 1009, 1010 and 1011. (c) In mode 2, the key is removed from the ignition switch 12, the driver's side door 15R or the passenger's side door 15L is opened, and the other doors 20R, 20L, bonnet 30 (see Figure 3) or This is an operation when any of the trunks 17 is opened, and in mode 2, the mode lamp _M2 lights up for 30 seconds. In mode 2, steps 1002 and 1003 in FIG.
Execute steps 1006, 1012, 1013, and then step 1014, 1015, 1016 or 1.
017, step 90
This is done by executing steps 1, 902 and 903. (d) In mode 3, the key is removed from the ignition switch 12, either the driver's side door 15R or the passenger's side door 15L is open, and the other doors 20R, 20L, trunk 17 and bonnet 30 are opened. is also closed, and the lock link switches 19R, 19L, 21R, 2 of all doors 15R, 15L, 20R, 20L are closed.
This is an operation when 1L is off, and in mode 3, mode lamp _M3 lights up for 30 seconds.
Mode 3 is at steps 1002 and 100 in FIG.
3,1006,1012,1013,101
4,1015,1016,1017,101
8, 1019 and 1020. (e) Mode 4 is the operation before entering the alarm standby state when either the driver's side door 15R or the passenger's side door _15L is keyless locked. Light. Mode 4 is step 100 in Figure 5.
2,1003, steps 1006 to 101
1 and steps 1021 to 1032. It should be noted that when the count up is determined in step 1025, the bonnet 30, door 15R,
15L, 20R, 20L or trunk 1
7 is open, or if the option switch 36 is turned on, the process returns to subroutine 1002 and continues in mode 4. (f) Mode 5 is a standby operation, and the mode lamp
_M5 lights up for 30 seconds. Mode 5 is the step 2001 to 2014, 2026, 2 in FIG.
This is done by executing 016, 2017, and 2032. (g) Mode 6 is the operation when the alarm condition is activated and the alarm condition is canceled. Mode 6 is step 30 in Figure 7.
This is done by executing steps 01 to 3013. Next, the operation of the automobile theft prevention system shown in FIG. 2 will be explained in order from mode 0 to mode 6. (a) Mode zero When the engine of the automobile 14 (see Figure 3) is running or the key is inserted into the ignition switch 12, the control unit 11 (see Figure 2) operates as shown in Figure 5. 100 steps
After executing 0 and 1001, a subroutine for checking the status of each related switch is executed in step 1002, and it is determined in step 1003 whether the keyless switch 13 is on. If the key is inserted into the ignition switch 12, in step 1004, the keyless switch 13 is set to be off and the driver's side door switch 31R and the passenger's side door switch 31L have never been turned on. (TJCNT←
0), and in step 1005, the mode is set to zero (MODE←0). Then step 1002,1
Repeat steps 003, 1004 and 1005. (b) Mode 1 When the key is removed from the ignition switch 12 in the state of mode 0, the control unit 11 executes step 1006, and the door switch 31R of the driver's side door 15R and the door switch 31R of the passenger's side door 15L are turned on. Determines whether door switch 31L is on or off (whether doors 15R and 15L are open or closed), and
If it is closed, in step 1007 it is determined whether the mode is currently 4. At this point, the mode is zero, so the control unit 11 executes step 1008 and further determines whether the current mode is one. Since the mode is zero at this point, the control unit 11 executes step 1009, sets the mode to 1 (MODE←1), and then lights the mode lamp _M1 for 30 seconds (SET30). In step 1011, the control unit 11 determines whether the keyless switch 13 is off and the door switch 31R or 31L is on (TJCNT=1). Since TJCNT=0 at this time, the control unit 11 returns to subroutine 1002.
From steps 1003, 1006, 1007, 1
Step 008 is executed, but since the mode is set to 1 at this time, step 1011 is executed next.
After that, step 10 starts from subroutine 1002.
03, 1006, 1007, 1008 and 10
Repeat step 11. (c) Mode 2 In mode 1, the door 15 on the driver's side
When the R or passenger side door 15L is opened and the door switch 31R or 31L is turned on, the control unit 11 executes steps 1006 to 1012, and turns on the keyless switch 13.
is off and the driver's side door 15R door switch 3
After executing the set that door switch 31L of 1R or passenger side door 15L is turned on (TJCNT←1), in step 1013, the door switch 31R or 31L is turned off and the lock link switch 19R or 19L is turned on for 4 seconds. Set as judgment required (FKCNT←0). The control unit 11 then performs step 101.
4 to 1017 are executed, and the door switches 32R and 32L for seats other than the front seats 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 rear lock link switches 21R and 21L are turned on and off. Determine off. If at least one of these switches is on, the control unit 11 determines in step 901 whether mode 2 is currently in effect. At this point, the mode is 1, so
The control unit 11 executes step 902 and sets the mode to 2 (MODE←2), and then
At step 903, the mode lamp _M2 is turned on for 30 seconds. The control unit returns from subroutine 1002 to step 10 at the next timing.
Execute 03, 1006, 1012, 1013,
After executing steps 1004 to 1007, step 901 is executed and the process returns to subroutine 1002, after which this loop is repeatedly executed. (d) Mode 3 In the above condition, the door switch 3 for seats other than the front seats is
2R, 32L are off, trunk switch 33 is off, bonnet switch 34 is off, all lock link switches 19R, 19L, 21R,
In other words, all doors 20R, 20L, trunk 17, and bonnet 30 other than the front seats are closed, and all lock link switches 19R, 19L, 21R,
When 21L is turned off, control unit 11
In step 1019, the mode is set to 3 (MODE←3), and in step 1020, the mode lamp _M3 is turned on for 30 seconds. Next, subroutine 1002, step 100
3,1006 and steps 1012 to 101
8 is executed, but at this point the mode is 3,
From step 1018, the process returns to subroutine 1002. Thereafter, subroutine 1002, step 100
3,1006 and steps 1012 to 101
8 is executed repeatedly. (e) Mode 4 Next, in the state of mode 3, either the driver's side door 15R or the passenger's side door 15L is closed, and the other is keyless locked (if one is open) (Even if the other one is keyless locked, it remains in mode 3.) In other words, when the keyless switch 13 is turned off and the door switch 31R and door switch 31L are turned off,
The control unit 11 performs step 1007.
, it is determined whether the current mode is 4 or not.
Since the mode is 3 at this point, the control unit 11 determines whether the mode is 1 in step 1008, temporarily sets the mode to 1 in step 1009, and then returns to step 101.
Run 0 again. Thereafter, in step 1011, the control unit 11 determines that the keyless switch 13 is off and the door switch 31R or 31L is on (TJCNT=1), that is, the key is pulled out from the ignition switch 12.
Driver side door 15R or passenger side door 1
Determine whether 5L has ever been opened. At this point, the key has been pulled out of the ignition switch 12 and the driver's side door 15R or the passenger's side door 15L has been opened, so the control unit 11 executes step 1021 and It is determined whether the front lock link switch 19R of the door 15R and the front lock link switch 19L of the passenger side door 15L are off. At this time, either the driver's side door 15R or the passenger's side door 15L is locked and the other is keyless locked, so the front lock link switches 19R and 19L are locked.
is off and control unit 11 is in step 1
At step 022, it is determined whether or not the mode is currently 4. Since the mode is set to 1 at this point, at step 1023, the door 15R on the driver's side or the door 15L on the passenger's side is checked. After starting a standby grace count that defines the time from keyless lock to entering the standby state, the mode is set to 4 in step 1024, and the process returns to subroutine 1002, although specific illustrations and explanations are not provided. When the subroutine 1002 is executed, the mode lamp _M4 is turned on for 30 seconds. The control unit 11 performs step 102.
In step 5, it is determined whether the count started above has counted up. Since the count has not increased at this point, the control unit 11 starts another count in step 1034, and then returns to subroutine 1002.
Return to steps 1003, 1006, 1007
Execute. At this point, the mode is 4, so after executing steps 1021 and 1022, the process returns to step 1002. Thereafter, the control unit 11 repeats the above operations until the count started at step 1023 counts up. When the standby grace period has elapsed and the count has counted up, the control unit 11 performs steps 1026, 1027, 1028 and 10.
29 in sequence, the bonnet switch 34, the option switch 36, the door switches 32R and 32L other than the front seats, and the trunk switch 33.
is off. If at least one of the bonnet switch 34, option switch 36, door switches 32R, 32L, and trunk switch 33 is on, the control unit 11 starts another count again in step 1034, and Returning to subroutine 1002, the above operations are repeated. If the trunk switch 33 is on at this time, the control unit 11 sets the count up after 30 seconds have elapsed in step 1033, and then starts another count in step 1034. In this state, the bonnet switch 34,
Option switch 36, door switch 32R,
32L and the trunk switch 33 are all turned off, the above-mentioned another count, which has been repeatedly started, is started, and the control unit 11 determines in step 1030 whether or not this count has counted up. This count increases in about 1.5 seconds from the start of counting to the end of counting. Therefore, if any one of the bonnet 30, doors 20L, 20R, trunk 17, etc. is closed but not completely closed and then opened again, the above-mentioned count is restarted and does not count up. That is, the bonnet 30, the doors 20L, 2
Incomplete closing operations of 0R, trunk 17, etc. prevent entering the standby state. When the above-mentioned one more count counts up, the control unit 11 goes to step 103.
1 is executed, and in step 1035 it is determined whether or not the 30 second count (TKCNT=1) executed in steps 2025 and 2027, which will be described later, is in progress. At this point, TKCNT=1, so
The control unit 11 executes step 1032 and switches the door switches 31L, 31R, 32L,
32R is off, lock link switch 19L,
19R, 21L, and 21R are in the off state for 4 seconds to determine whether it is unnecessary (FKCNT=1). Note that if TKCNT=1, the control unit 11 executes step 1035 and performs the above process.
Determine the 30 second count. (f) Mode 5 If FKCNT=1, as shown in FIG. 6, a 3-minute count is started in step 2001. This is to prevent the alarm from entering the alarm state if a child or the like remains inside the vehicle 14 and the inner lock knob 29 is carelessly operated. When 30 seconds have passed with TKCNT=1 and
When FKCNT=1, this 3-minute count is not started. After that, the control unit 11 sets the mode to 5 in step 2002 (MODE←5).
Turn on the mode lamp _M5 for 30 seconds and step 2
Door switches 31R, 31L, 32 at 003
R, 32L off, lock link switch 19R
19L, 20R, and 20L are set to require 4 seconds of off-state determination (FKCNT←0), and further, in step 2004, the initial value of the tilt sensor 35 at the parking position of the automobile 14 is stored or the initial position of the tilt sensor 35 is set. Set (tilt sensor set)
I do. The control unit 11 performs subroutine 2
At 005, the door switch 31L of the car 14,
31R, 32L, 32R, bonnet switch 3
The outputs of all the switches and inclination sensors 35 described above such as 4 etc. are read, that is, the outputs of each sensor are read, and the following steps 2006 to 20 are carried out.
In step 20, it is determined whether or not abnormal signals are being output from these sensors. That is, the control unit 11 performs steps 2006 to 2020 described above.
From 06 to 2008, the tilt sensor 35,
If it is determined that any one of the door switches 31R, 31L, 32R, 32L or the bonnet switch 34 is on, the system enters the alarm state described later, regardless of whether it has been within three minutes since entering the standby state. . Furthermore, if the control unit 11 determines in step 2009 that the input terminal 11a is on, if the keyless switch 13 is off and an attempt is made to start the engine without using a normal key, the control unit 11 enters an alarm state and the keyless switch 13 is turned off. If the switch 13 is on, that is, if a normal key is used to start the engine, the process returns to label initialization (subroutine 1001) in FIG. 5 again. The control unit 11 performs step 201.
0, the alarm state is also entered if it is determined that the option switch 36 is on. The above steps 2009 and 2010 are also executed regardless of whether it has been within three minutes since entering the standby state. The control unit 11 performs the step 2 above.
After executing 010, the inner lock switch 21R,
21L, 23R, and 23L are on or off, that is, it is determined whether the inner lock knob 29 is operated to the unlock position. If the inner lock knob 29 is moved to the unlock position due to careless operation by a child left in the vehicle, etc., in step 2023, after starting a count of T ₃ seconds,
At step 2024, step 2001 has already been completed.
It is determined whether or not the 3-minute count which has started counting at 3-minutes has counted up (whether 3 minutes have elapsed since entering the standby state). If it is within three minutes of entering the standby state, that is, if the inner lock knob 29 is inadvertently operated to the unlock position by a child or the like who remains inside the keyless locked automobile 14, within three minutes of entering the standby state. In this case, the control unit 11 sets FKCNT to 1 in step 2028 (FKCNT←1), sets the mode to 4 again in step 2029, and sets the inclination sensor 3 in step 2030.
5, subroutine 1 in FIG.
Return to 002. Thereafter, the control unit 11 enters the standby state and executes this subroutine 1002 within 3 minutes.
From step 1003, 1006, 1007,
1021, 1022, 1025 to 1032,
The loop from 2002 to 2011, 2023, and 2024 is executed repeatedly, but the inner lock knob 2
9 is operated, either the front lock link switches 19R, 19L or the rear lock link switches 21R, 21L are turned on after a slight delay, and the control unit 11 enters subroutine 1.
Steps 1003, 1006, 100 from 002
The loop of executing steps 7, 1021, and 1036 and returning to 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 returns from subroutine 1002 to steps 1003, 1006, 1007, 1021,
1022, 1025 to 1032, 2002 to 2014, 2026, 2016, 2017,
2032 and returns to subroutine 2005. Thereafter, the control unit 11 performs subroutine 2005 and steps 2006 to 201.
4, 2026, 2016, 2017, and 2032, the loop returns to subroutine 2005 repeatedly and enters a standby state. In the above step 2023, a count of _T3 seconds is started, but if the operation time of the inner lock knob 29 is extremely short, after the inner lock switch 22R, 22L, 23R or 23L is turned off, the front lock link switch 19R is turned off. ，
19L or rear lock link switch 21
This is to prevent either R or 21L from turning on late and immediately entering an alarm state.
In other words, even if the inner lock switch 22R, 22L, 23R or 23L is turned off when the standby state is within 3 minutes, the control unit 11 will change from 2012 to 2024, 2 while counting for ₃ seconds.
Execute 028 to 2030 and subroutine 1
Return to step 002 and step 1003, 1006, 1
007, 1021, 1022, 1025 or 1
032, 2002 to 2012, 2024, 2
The loop from 028 to 2023 is repeatedly executed, and during that time either the front lock link switches 19R, 19L or the rear lock link switches 21R, 21L are turned on. Front lock link switch 19
R, 19L or rear lock link switch 2
When either 1R or 21L is turned on, the control unit 11 moves from subroutine 1002 to steps 1003, 1006, 1007, 1021,
A loop of executing step 1036 and returning to subroutine 1002 is repeatedly executed. After 3 minutes of waiting, the car 14
Unless the doors 15R, 15L, 20R, 20L or the trunk 17 of the vehicle have been illegally opened, the control unit 11 executes subroutine 2005, steps 2006 to 2014, 2.
From 026, 2016, 2017, and 2032, the loop returning to subroutine 2005 is repeatedly executed, and a substantial standby state is entered. During this waiting period, if any of the tilt sensor 35, door switches 31L, 31R, 32L, 32R, bonnet switch 34, or option switch 36 is turned on, or if the ignition switch 12 is turned on and the keyless switch 13 is turned off. In both cases, an alarm state will occur, which will be described later. Also, when the trunk key cylinder switch 18 of the trunk 17 is off and the trunk switch 33 is on, and the T ₁ second count has increased,
An alarm state will occur, which will be described later. This T ₁ second count is
This is to prevent an alarm from being erroneously issued when the trunk 17 is opened due to variations in the assembly of the trunk key cylinder switch 18 and trunk switch 33. That is, if the trunk switch 33 is turned on even though the trunk key cylinder switch 18 is off, the control unit 11 does not immediately set the alarm state, but turns on these trunk key cylinder switches after T ₁ seconds have elapsed. 18 and the trunk switch 33, and if the trunk key cylinder switch 18 is off and the trunk switch 33 is on even after T ₁ second has elapsed, it is assumed that the trunk 17 has been opened illegally and an alarm state is established. do. On the other hand, even if the trunk switch 33 is turned on,
T Trunk key cylinder switch 18 within ₁ second
When turned on, the control unit 11 switches from steps 2025, 2027 to 2030 to the fifth step.
Returning to the execution of subroutine 1002 in the figure, from then on,
From subroutine 1002 to step 1003,1
006, 1007, 1021, 1022, 102
The loop of executing steps 5 to 1029, 1033, and 1034 and returning to subroutine 1002 is repeated, the standby state is released, and then the trunk 17
When you close it, it goes into standby mode again. Furthermore, step 20
The reason why the 30 second count starts at 27 is that if there is luggage etc. on top of the trunk 17, even if you try to open the trunk 17 by normal key operation, the trunk 17 will only open halfway and the trunk will be closed. The switch 33 remains off. In this case, the trunk 17 will be opened manually, but at this time the trunk key cylinder switch 18 has already been activated.
This is to prevent an alarm from occurring because it is turned off. The door key cylinder switches 16L and 16R are both switches that are turned on only while the key is being operated, but even when the door key cylinder switches 16L and 16R are turned on by normal key operation, they can be turned on as follows. , 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 a key cylinder timer count in step 2031. By the way, the same situation as the trunk key cylinder switch 18 and the trunk switch 33 exists between the door key cylinder switch 16R and the lock link switch 19R, and due to variations in the assembly of the two, the lock link switch 19R is There are cases where the switch is turned on at a timing after the switch 16R is turned on, and cases where it is turned on at a timing before the door key cylinder switch 16R is turned on. The operations in these two cases will be explained below. [When the door key cylinder switch is turned on first] If the lock link switch 19R is turned on after the door key cylinder switch 16R is turned on, the control unit 11 performs step 20.
After executing step 2031 from step 16 and starting the key cylinder timer count, step 2017 is executed.
At step 2032, it is determined that the lock link switch 19R is off, and the process proceeds from step 2032 to subroutine 20.
Return to execution of 05. After that, when the lock link switch 19R is turned on, the control unit 11 moves to step 2.
At step 018, a determination is made as to whether the key cylinder timer has started counting as described above. Normally, the lock link switch 19R is turned on when the door key cylinder switch 16R is turned on, but at least the lock link switch 19R is turned on after the door key cylinder switch 16R is turned off and before the timer comes up, so the control unit 11 assumes that the door lock has been normally released, and returns to the subroutine 1001 in FIG. 5 with the key cylinder timer up and the lock link timer up in step 2021, 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 goes to step 201.
After executing step 2017 from step 6 and determining that the lock link switch 19R is on, it is determined in step 2018 whether or not the key cylinder timer is up. In this case, since the key cylinder timer count has not normally started, the control unit 11 determines that the key cylinder timer has timed up, and proceeds to steps 2019 and 2.
After executing step 033, the process returns to subroutine 2005. Then, a loop from subroutine 2005, steps 2006 to 2014, 2026 to 2019, and 2033 and returning to subroutine 2005 is repeatedly executed until the lock link timer is up. When lock link switch 19R is turned on by normal key operation, door key cylinder switch 16R and lock link switch 19 are turned on.
Even if there is a delay in turning on the door key cylinder switch 16R due to variations in the assembly with R, the door key cylinder switch 16R is turned on before the lock link timer is timed up, and the control unit 11 executes step 2021 and
The process returns to subroutine 1001 in the figure and the standby state is released. Further, if the door key cylinder switch 16R is not turned on before the lock link timer is up, it means that the key operation is not performed normally, and in this case, an alarm state occurs. Note that the standby state is canceled by the door key cylinder switch 16L in the same manner as described above. (g) Mode 6 When any of the situations in which an alarm should be issued as described above occurs from the state of Mode 5, the control unit 11 starts counting for 3 minutes, which is the alarm duration, in step 3001 of FIG. ,
In step 3002, the mode is set to 6. Next, the control unit 11 outputs a "low" signal from its output terminal 11q in step 3003.
A level signal is output to energize the solenoid _X1 of the starter cut relay 38 shown in FIG. 2, and its normally closed contact _X1 -b is turned off to prevent the engine from starting. Further, in step 3004, the control unit 11 outputs a "low" level signal from the optional output terminal 11u. If an alarm device (not shown) consisting of, for example, a voice synthesizer or the like is connected between the optional output terminal 11u and the power line 1B, it is possible to issue an alarm that the automobile 14 is stolen. Next, in step 3005, the control unit 11 determines whether or not the 3-minute count has increased. If the 3-minute count has not increased, the control unit 11 determines in step 3006 that the output terminal 11r is turned on.
The output of the drive coil of the horn relay 43 shown in FIG.
_X2 is energized and deenergized at the above-mentioned period, and the horn 44,
45 intermittently generates an alarm sound. The control unit 11 simultaneously connects its output terminals 11s and 11t in step 3007.
The output of the turn signal lamps 51 and 5 in FIG.
2, 53, 57, 58 and 59 blink. The control unit 11 performs subroutine 3
Door key cylinder switch 16L, 1 at 008
6R, keyless switch 13 and input terminal 11
The routine for reading the output of step a is executed, and in step 3009, the door key cylinder switch 1 is
Turn on and off 6R and 16L, step 3010
At step 3011, it is determined whether the keyless switch 13 is on or off, and at step 3011, whether the input terminal 11a is on or off. That is, the door key cylinder switch 16R,
16L is off and the keyless switch 13 is off, or the door key cylinder switch 16R,
16L is off, the keyless switch 13 is on, and the input terminal 11a is off, the alarm operation is performed until the 3-minute count increases. Even during the above alarm operation, if the door key cylinder switches 16R and 16L are turned on, or if the keyless switch 13 and input terminal 11a are turned on, the control unit 11
The process returns to subroutine 1001 in FIG. 5, and the alarm state is canceled. If the 3-minute count has increased, the control unit 11 stops energizing the drive coil X ₂ of the horn relay 43 in step 3012, and then turns on the turn signal lamps 51, 52, 53 in step 3013. , 57, 58, and 59, and the alarm operation is stopped. Incidentally, the starter cut relay 38 continues to be turned on and a "low" level signal continues to be output from the optional output terminal 11a. According to the embodiment described above, the door 15R on the front seat side of the automobile 14 or the door 1 on the passenger seat side
After the 5L is keyless locked, it is systemically checked to see if it is OK to go into standby mode within a predetermined period of time, and only when this is confirmed, the standby mode is entered. 14 doors 20L and 20 other than the front seat side
If the R, bonnet 30, trunk 17, etc. are opened, the system does not immediately go into standby mode, but when they are closed afterwards, the system goes into standby mode, resulting in a false alarm. Never. In addition, mode lamps M ₁ , M ₂ , M ₃ , M ₄ and
The M ₅ displays each operating step of the system, allowing you to obtain information on what to do next.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an outline of the anti-theft device for an automobile according to the present invention, Fig. 2 is a specific circuit diagram of an embodiment of the anti-theft device for an automobile according to the present invention, and Fig. 3 is a diagram showing various sensors. 4 is an explanatory diagram showing the relationship between the door key cylinder switch, inner lock switch, lock link switch and the mechanism for operating these switches,
5, 6, and 7 are flowcharts for explaining the operation of the automobile theft prevention device of FIG. 2. FIG. 1...standby device, 2...abnormality detection device, 3...
Alarm device, M ₁ , M ₂ , ... M _o ... mode lamp.

Claims (1)

[Scope of utility model registration request] After the door is opened with the key removed from the ignition switch, if you close the door without using the key while maintaining the locked state, the door will go into standby mode where an alarm can be generated. Alternatively, there is a standby device that releases the standby state when the trunk is unlocked or the ignition switch is turned on, and a door, bonnet or trunk is unlocked or the ignition switch is turned on by means other than a key. an abnormality detection device that outputs an abnormal signal when the key is removed from the ignition switch, an alarm device that issues an alarm when the abnormality detection device outputs an abnormal signal while the standby device is in standby mode, and an alarm device that lights up for a predetermined period of time when the key is removed from the ignition switch. A mode lamp M1 that lights up for a predetermined time when the door is opened with the key removed, a mode lamp M2 that lights up for a predetermined time when the door is unlocked with the key removed and the door opened. M3, a mode lamp M4 that is lit for a predetermined period of time when the door is closed while the lock is maintained, and a mode lamp M5 that is lit for a predetermined period of time when the door is closed and the standby device is in a standby state. An anti-theft device for automobiles characterized by: