JPH0744516Y2 - Vehicle theft alarm device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention uses an ultrasonic sensor to detect the presence of a moving object (thief, etc.) in the vehicle interior after being locked by an unauthorized means to prevent the vehicle from being stolen. The present invention relates to a vehicle burglar alarm device that issues an alarm when detected.

[Conventional technology]

Conventionally, an apparatus of this type is disclosed in Japanese Utility Model Application No. 59-170119. In this device, the presence of moving objects inside the vehicle by the ultrasonic sensor during the alarm state of the theft alarm system,
For example, when the movement of a person such as a thief is detected, an alarm is issued and the starter motor is prohibited from driving to prevent the vehicle from being stolen.

[Problems to be solved by the device]

However, in the conventional vehicle theft alarm device as described above, when the user leaves the vehicle for a short time due to shopping or the like, a child or pet (dog, cat, etc.) is left in the vehicle compartment and the theft alarm system is set. In other words, when a child or pet moves, this may be detected by the ultrasonic sensor and may give an alarm by mistake.

The present invention is intended to solve the above-mentioned problems, and by selecting a door lock means of a keyless lock or a key lock, it is possible to select whether or not to give an alarm by an ultrasonic sensor. It is an object of the present invention to provide a vehicle burglar alarm device that prevents an alarm from being generated.

[Means for Solving the Problems]

For this reason, the vehicle theft alarm device of the present invention includes a keyless lock detecting means for detecting a keyless lock state (a state in which a door is locked by operating a door lock knob with a door without using a key), and a key lock state ( Key lock detection means for detecting (door locked state by key operation) and regular key operation after detecting the keyless lock state by the keyless lock detection means or detecting the key lock state by the key lock detection means An unauthorized unlocking operation detecting means capable of detecting an unauthorized unlocking operation that does not rely on the above, and an alarming means for issuing an alarm when the unauthorized unlocking operation is detected by the unauthorized unlocking operation detecting means.
When an ultrasonic sensor capable of detecting an object moving in the vehicle compartment is provided, and the alarm means detects the keyless lock state by the keyless lock detection means or the keylock state is detected by the keylock detection means. It is characterized in that an alarm is issued to the detection operation of the ultrasonic sensor only in any one of the predetermined cases.

[Action]

In the above-described vehicle theft alarm device of the present invention, in either case where the keyless lock detecting means detects the keyless lock state or when the keylock detecting means detects the keylock state, after the detection. When the unauthorized unlocking operation detecting means detects the unauthorized unlocking operation, the alarm means issues an alarm. Therefore, even if the door is locked by either the keyless lock or the key lock, this device is in a warning state where an alarm can be issued. Then, only when the keyless lock detection means detects the keyless lock state or when the keylock detection means detects the keylocked state, either of the predetermined cases, the alarm means detects the ultrasonic sensor. Since an alarm is issued for, a keyless lock or a key lock door lock means can be selected to select whether or not to issue an alarm by the ultrasonic sensor.

〔Example〕

Hereinafter, a vehicle burglar alarm device as an embodiment of the present invention will be described with reference to the drawings.
FIG. 3 is a circuit diagram showing the overall configuration of the apparatus, and FIG. 3 is a perspective view of a vehicle for explaining each switch position.

First, the overall structure of the apparatus of this embodiment will be described with reference to FIGS. In FIG. 2, 11 is a controller for controlling this apparatus, and this controller 11 executes control according to the flowcharts shown in FIGS. 12 and 13 described later.

As shown in FIG. 2, the controller 11 is connected to the battery power source B for power supply, and when the ignition key switch (not shown) is set to the “ACC” position, ACC is set.
When the ignition key switch is set to the "IG" position, the IG signal is turned on and input.

In FIGS. 2 and 3, DLSW1 to DLSW4 are all door lock switches, and door lock switches DLSW1, DLSW2
Are turned off (open state) when the locked state of the driver's door and passenger side door (hereinafter referred to as the front door) are detected, and turned on (closed state) when the unlocked state is detected. And the door lock switch DL
SW3 and DLSW4 are turned off when detecting the locked state of each of the two rear seat doors, and are turned on when detecting the unlocked state.

Further, all of DSW1 to DSW4 are door switches, and these door switches DSW1 to DSW4 are turned from the ON state to the OFF state when detecting the closed states of the two front seat doors and the two rear seat doors, respectively. TRSW and FDSW detect the closed state of the trunk and the hood, respectively.
TRKSW A trunk key switch that detects unlocking by the trunk key, and turns the key from the OFF state to the ON state when turned in the unlock direction.

In addition, DKSW1 and DKSW2 are door key switches that switch from the off state to the on state when the keys of the two front doors rotate from the neutral position (key removal position) to either the lock direction or the unlock direction. The detailed configuration and operation will be described later with reference to FIGS.

In FIG. 3, DLN is a door lock knob with a door used for locking the door from the vehicle interior or for keyless locking.

On the other hand, in FIG. 2, reference numeral 10 denotes an ultrasonic sensor capable of detecting an object moving in the vehicle interior. The ultrasonic sensor 10 includes a transmitter 10a for transmitting ultrasonic waves and an ultrasonic wave reflected by an operating object. The transmitter 10a and the receiver 10b are arranged in the vehicle compartment as shown in FIG. Further, 12 is a horn, and the horn 12 is supplied with electric power from a battery power source B via a relay switch 13a in a horn relay 13. One end of the relay coil 13l in the horn relay 13 is connected to the battery power source B and the indicator lamp 20,
The other end of the relay coil 13l is connected to the controller 11 via the line a and is also connected to a horn switch HSW provided to a handle (not shown).

Reference numeral 14 is a headlight, and the headlight 14 is supplied with electric power from a battery power source B via a relay switch 15s in a headlight relay 15. Further, one end of the relay coil 15l in the headlight relay 15 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 15l is connected to the controller 11 via the line b and the handlebar. It is also connected to the nearby headlamp switch HDSW.

Reference numeral 16 denotes a tail light, and the tail light 16 is supplied with power from the battery power source B via a relay switch 17s in the tail lamp relay 17. Further, one end of the relay coil 17l in the tail lamp relay 17 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 17l is connected to the controller 11 via the line c and near the handle. It is also connected to the tail light switch TLSW.

Further, reference numeral 18 is a starter inhibit relay for preventing the starter motor 19 from being forcibly started when an illegal unlocking operation that does not depend on a proper key operation is detected.The relay switch 18s of this relay 18 has a normally closed contact. 18t is connected to the ignition switch start position ST (IGSW), and the fixed contact of the relay switch 18s is the starter motor 1
Connected to 9. Further, one end of the relay coil 18l of the relay 18 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 18l is connected to the controller 11 via the line d.

The other end of the indicator lamp 20 is connected to the controller 11 via the line e.

Now, with respect to the apparatus of the present embodiment configured as described above, the characteristic portion of the present invention will be specifically described with reference to FIG.

In FIG. 1, reference numeral 1 is a keyless lock detecting means for detecting a keyless lock state in which a door is locked by operating a door lock knob DLN with a door without using a key. It is composed of door switches DSW1 and DSW2 for front doors, door lock switches DLSW1 and DLSW2, and keyless lock determination means 1a in a controller 11 that determines a keyless lock state based on ON / OFF signals from these switches. ing.

Reference numeral 2 denotes a key lock detecting means for detecting a key lock state in which the door is locked by a key operation. The key lock detecting means 2 is the door switch DSW1, DW for the front door described above.
SW2, door lock switches DLSW1 and DLSW2 and door key switches DKSW1 and DSW2, and ON / OFF from each of these switches
The key lock determining means 2a in the controller 11 determines the key lock state based on the OFF signal.

Here, the key lock determining means 2a performs a determining operation according to a flowchart shown in FIG. 13 described later,
The door key switch DKSW1 (or DKSW2) is turned on after the door lock switch DLSW1 (or DLSW2) is turned on, or the door key switch DKSW1 (or DKSW2) is turned on. When the state is held, the door is determined to be in the key lock state on condition that the door lock switch DLSW1 (or DLSW2) is changed from the on state to the off state.

Reference numeral 3 denotes an unauthorized unlocking operation detecting means capable of detecting an unauthorized unlocking operation that does not depend on a proper key operation, and is composed of the door switches DSW1 to DSW4, the trunk switch TRSW, the hood switch FDSW, etc. When the switch is turned on by the unlocking operation instead of the regular key operation, the detection signal of the illegal unlocking operation is output.

A control unit 4 receives the detection signals from the keyless lock detection means 1, the key lock detection means 2, the illegal unlocking operation detection means 3 and the ultrasonic sensor 10, and controls the alarm means 5. After receiving the keyless lock state detection signal from the keyless lock detection unit 1 or the key lock state detection signal from the key lock detection unit 2, the unauthorized unlocking action detection signal from the unauthorized unlocking action detection unit 3 or When the operation object detection signal from the ultrasonic sensor 10 is received, the alarm means 5 is controlled to issue an alarm. Here, the alarm means 5 comprises the horn 12, the headlight 14, and the tail lamp 16 described above, and the relays 13, 1
By exciting relay coils 13l, 15l, 17l of 5,17, horn 12 is activated and headlight 14 and tail lamp 16 are activated.
Blinks to give an alarm. In addition, in this embodiment, when an illegal unlocking operation is detected, the relay coil 18l of the relay 18 is excited to turn on the relay switch 1
By turning off 8a, the starter motor 19 is interlocked.

Further, 8 is a prohibiting means for prohibiting the alarm means 5 from issuing an alarm in response to the detection operation of the ultrasonic sensor 10 when the keyless lock detecting means 1 detects the keyless lock state, and the controller 4 and the ultrasonic sensor. It is set between 100 and. Therefore, in the present embodiment, the function of the prohibiting means 8 causes the alarm means 5 to give an alarm to the detection operation of the ultrasonic sensor 10 only when the key lock detecting means 2 detects the key lock state. Has been done.

Next, the configuration of the door key switch DKSW1 (DKSW2) in the apparatus of this embodiment will be described in detail with reference to FIGS. Here, FIG. 5 is an external view of the door outer handle assembly showing the arrangement of the door key switch, FIG. 6 is a view showing the configuration of the door key switch from the back side of the door outer handle assembly, and FIG. 7 is FIG. VII arrow view, No. 8
The figure shows the on / off operation range of the door key switch, and FIGS. 9 (a), (b), 10 (a), (b) and 11 (a), (b) are all shown. It is a figure for explaining operation of the door key switch.

As shown in FIGS. 5 to 7, the door outer handle assembly 21 for the front door is provided with a key cylinder 22 for locking the front door by key operation. A lever 24 is attached to the key rotor 23 of this key cylinder 22,
Further, a magnet 25 is attached to this lever 24.
Then, as shown in FIGS. 5 to 7 or FIGS. 9A and 9B, when the lever 24 is in the neutral position of the key (key removal position), the transfer type lead is arranged so as to face the magnet 25. A switch 27 is arranged, and these magnets 25 and reed switch 27 are used for the door key switch.
DKSW1 and DKSW2 are configured.

When the magnet 25 is in the neutral position as shown in FIG. 9 (a), the reed switch 27 is
The magnetic force of the magnet 25 pulls it toward the NO (Normal Open) terminal side, and the outputs of the door key switches DKSW1 and DKSW2 are turned off. On the other hand, when the magnet 25 is rotated in the locking direction or the unlocking direction as shown in FIG.
As shown in FIG. 11 (b) or FIG. 11 (b), the magnetic force of the magnet 25 is no longer received and the NC (Normal Close) terminal side is reached and the outputs of the door key switches DKSW1 and DKSW2 are turned on.

For example, the door key switch DKSW1, which accompanies the key rotation operation
The on / off output range of DKSW2 is as shown in Fig.8.
The range of 20 ° ± 5 ° to the left and right around the neutral position is the off-state range in the key neutral state, and the left and right ranges outside this off-state range are the on-state ranges in the locked and unlocked states.

That is, in the door key switches DKSW1 and DKSW2, only whether the door key is rotated from the neutral position or returned to the neutral position is detected from the on / off state.

The reed switch 27 is housed in the switch case 26, fixed at a predetermined position by a fixing screw 28, and prevented from rotating by a rotation stopper 29. Also,
In the figure, 22a indicates a key insertion port.

Since the vehicle burglar alarm system as one embodiment of the present invention is constructed as described above, it operates as follows. 12th
The figure is a flow chart for explaining the control procedure by the controller, and the control processing is executed by the controller 11 according to this flow chart.

In other words, first, after initializing (step S1), the door switch DS is checked to see if the front door is open.
The determination is made based on the ON / OFF signal from W1 or DSW2 (step S2). When it is determined that the front door is open, it is determined whether the front door is locked or not based on the ON / OFF signal from the door lock switch DLSW1 or DLSW2 (step S3).

The determination operation of steps S2 and S3 described above is performed by the keyless lock determination means 1a of the controller 11. When the keyless lock determination means 1a receives an ON signal (door open state) from the door switches DSW1 and DLSW2 and an OFF signal (lock state) from the door lock switches DLSW1 and DLSW2, the door with a door is not used. By operating the lock knob DLN, it is determined that the keyless lock with the front seat door locked is performed. Then, after the key lock flag is set to 0 (step S4), the control unit 4 controls the timer (not shown).
Simultaneously with the start of the time counting operation, the indicator lamp 20 is turned on through the line e, and it is notified that the theft alarm system by this device has entered the standby state (step S7). If it is not determined in step S3 that the front seat door is locked, step S2
Return to.

On the other hand, if it is determined in step S2 that the front door is closed, the front door is locked with the key based on the on / off signals from the door key switches DKSW1 and DKSW2 and the door lock switches DLSW1 and DLSW2. It is determined whether or not the key has been pressed (whether or not the key is locked) (step S5).

The determination operation of these steps S2 and S5 is performed by the controller 11
The key lock determination means 2a of FIG. 13 particularly performs a detailed determination procedure in step S5 according to the door key lock / key unlock determination routine shown in FIG.

Before explaining the determination procedure, referring to FIGS. 14 (a) and 14 (b), the door key switch DKSW1 (DKSW2) and the door lock switch DLSW1 at the time of key lock and key unlock are shown.
The behavior of the ON / OFF signal from (DLSW2) will be briefly described.

When the door is locked by operating the key, the key is usually inserted into the key insertion opening 22a and then rotated from the neutral position in the locking direction as shown in FIG. 10 (a). Along with this, the door key switch DKSW1 (DKSW2) changes from the off state to the on state (see FIG. 14 (a)). In this way, after the door key switch DKSW1 (DKSW2) changes from the off state to the on state, the door lock switch DLSW1 (DLSW2) is changed from the on (unlocked) state to the off (locked) state by the lock operation by the key. [See FIG. 14 (b)]. After that, the key is returned to the neutral position and pulled out, so that the door key switch DKSW1 (DKSW2) is changed from the on state to the off state.

Conversely, when unlocking the door by key operation,
Insert the key into the key slot 22a and then
1 Rotate in the unlock direction as shown in FIG.
Along with this, the door key switch DKSW1 (DKSW2) changes from the off state to the on state (see FIG. 14 (a)). After the door key switch DKSW1 (DKSW2) changes from the off state to the on state in this way, the door lock switch DLSW1 (DLSW2) changes from the off (lock) state to the on (unlock) state in response to the unlock operation by the key. (See FIG. 14 (b)).

Now, based on the signal behavior shown in FIGS. 14 (a) and 14 (b), the door key lock / key unlock determination is performed as follows. That is, after the closed state of the front seat door is detected by the off signal from the door switches DSW1 and DSW2 (step S3 in FIG. 12), the routine proceeds to the door key lock / key unlock determination routine shown in FIG. , It is determined whether the door key switch DKSW1 (or DKSW2) has changed from the off state to the on state (step A1). When this change occurs, it means that the key has been rotated, so the door key switch flag is set to "1" (step A2), and the door key switch DKSW1 (or DKS
W2) holds the ON state (step A3). If it holds the ON state, whether the door lock switch DLSW1 (or DLSW2) has changed from the OFF state to the ON state (step A3) A4). Door lock switch DLSW
It is determined whether 1 (or DLSW2) has changed from the on state to the off state (step A5).

If it is determined in step A4 that the state has changed from the off state to the on state, it means that the unlock operation has been performed by the key, so the key unlock processing (No determination processing in step S4 in FIG. 12) is performed. On the other hand (step A7), if it is determined in step A5 that the ON state has changed to the OFF state, it means that the lock operation has been performed by the key, so the key lock process (step S4 in FIG. 12) is performed. Yes judgment processing) is performed (step A)
6).

When it is determined in step A3 that the door key switch DKSW1 (or DKSW2) is not held in the ON state, the door key switch flag is set to "0" and the process returns. When it is determined in steps A4 and A5 that the door lock switch DLSW1 (or DLSW2) is not turned on / off, the process returns from step A5.

On the other hand, in step A1, the door key switch DKSW1
If it is determined that (or DKSW2) has not changed from the OFF state to the ON state, it is determined whether the door key switch flag is set to "1" (step
A8). If it is determined to be "1", the process proceeds to step A3 described above. This is a door key switch DKSW1
This door key switch DKSW1 (or DKSW2) does not change (or DKSW2) from OFF state to ON state.
May remain in the ON state, and in step A3 it is determined whether the door key switch DKSW1 (or DKSW2) is in the ON state, and the same steps A4 to A7 and A9 as described above are performed. Apply processing. Step A8
In, if it is determined that the door key switch flag is "0", the process returns.

Therefore, by performing the key lock determination according to the flowchart of FIG. 13, the door key switch DKSW1 (or D
If the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state after the KSW2) changes from the OFF state to the ON state, or the door key switch DKSW
If the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state while 1 (or DKSW2) is kept in the ON state, it is determined that the door is in the key lock state.

Here, through steps A3 and A8, the door key switch DKSW1
(Or DKSW2) is determined to be in the ON state and the above items are used as the key lock determination conditions when the following items are used as the key lock determination conditions: Is caused.

For example, as shown in FIGS. 15 (a) and 15 (b), when the door is locked, immediately after the key is inserted into the key insertion opening 22a and pivoted in the unlock direction to perform the unlock operation, the key is Suppose that the key is pulled out by reversing all at once and rotating in the locking direction. When rotating from the unlock side to the lock side in this way, the door key switch DKSW1 (or D
KSW2) is on for a very short time (T <10mse
After c), the door will be turned off again, and then the door will be turned on again. The door will be unlocked and then locked again by this operation.

At this time, since the time T during which the door key switch DKSW1 (or DKSW2) is in the OFF state is extremely short, the controller 11 that intermittently sees the ON / OFF signal (every 65 msec) has the short time as described above. If the off-state is not detected, the off-state for a short time as described above cannot be detected. Therefore, in such a case, the door key switch DKSW1
If it cannot detect that (or DKSW2) has changed from the OFF state to the ON state, and if only the above items are the key lock determination conditions, the key operation as shown in FIGS. 15 (a) and 15 (b) is performed. In this case, even if the key is pulled out and the door is locked, it cannot be determined that the key is locked.

Therefore, as described above, by using items and as key lock determination conditions, it is determined in step A3 and A8 that the door key switch DKSW1 (or DKSW2) is kept in the ON state, and the door key switch DKSW1 (or DKSW2) is determined.
The key lock / key unlock determination process in steps A4 and A5 is performed until is turned off. As a result, based on the ON / OFF change of the door lock switch DLSW1 (or DLSW2) immediately before the door key switch DKSW1 (or DKSW2) is turned off, the key lock / key unlock can be accurately determined by steps A4 and A5. It is.

As described above, according to the flowchart in FIG.
As a result of performing the determination in step S5 of FIG. 12, if it is determined that the front door is not in the key lock state, the process returns to step S2, while if it is determined that the front door is in the key lock state,
Set the key lock flag to 1 (step S
6) Similarly, the process proceeds to step S7, and the theft alarm system by this device goes into the standby state.

As shown in FIG. 12, the standby state is held for 20 seconds by the operation of the timer (step S10), and in the standby state, if a condition for canceling the theft alarm system occurs, the system is canceled. (Step
S8, S9). Here, the system release condition is, for example, when the ACC signal or the IG signal is turned on, when the front seat door is unlocked, or when the door remains locked and the state changes from open to closed to open. .

By the way, in the standby state for 20 seconds, if the release condition does not occur, the process proceeds to step S11 and subsequent steps. That is, it is determined whether or not all the doors are locked by the ON / OFF signals from the door lock switches DLSW1 to DLSW4 (step S11). Then, when it is determined that all the doors are locked, the indicator lamp 20 is turned off by the control of the controller 11, and it is notified that the theft alarm system has entered the warning state (step S1.
2).

After entering the alert state in this way, the unauthorized unlocking operation detecting means 3 detects that the door or the trunk has been unlocked without the proper key operation, or the key is locked. If the ultrasonic sensor 10 detects whether or not there is an action object in the vehicle compartment, the control unit 4 controls the alarm means 5 to an alarm state. Before that, the determination processing in steps S13 to S16 is performed. Is performed. That is, it is determined whether or not an alarm has already been issued (step S12). If no alarm has been issued yet, the ACC signal or IG
It is determined whether the signal is in the on state (step S14). A
If the CC signal or the IG signal is in the on state, the system alert state is released (step S15), and while returning to step S2, if it is determined in step S14 that the ACC signal or the IG signal is not in the on state, all the doors are closed. Is closed based on the on / off signals from the door switches DSW1 to DSW4 (step S16). In this step S16, the signal level of the signal line 1 shown in FIG. 2 may be detected to make the determination.

Then, if it is determined in step S16 that all the doors are closed, an alarm is issued if a factor for issuing a theft alarm occurs due to the determination in step S17 and subsequent steps.

Thereafter, in step S17, it is determined whether or not the trunk is opened by the key based on the ON / OFF signals from the trunk switch TRSW and the trunk key switch TRKSW. For example, there is a case where the driver opens the trunk with a key in order to take out the luggage from the trunk after getting off the vehicle. In such a case, the warning state is simply maintained without issuing an alarm. Then, when the trunk is opened by the key, thereafter, it is determined whether or not the trunk is closed based on the on / off signal from the trunk switch TRSW (step S18), and when the trunk is closed, If the trunk cannot be closed while returning to step S13, it is determined whether the front door is unlocked by the key based on the ON / OFF signal from the door key switch DKSW1 (DKSW2) and the door lock switch DLSW1 (DLSW2). (Step S19). If the front door is unlocked with the key, the system is released (step S20) and the process returns to step S2, while if the front door is not unlocked with the key, the trunk is closed until step S18, The processing of S19 is cyclically performed,
When the trunk is closed, the process returns to step S13.

By the way, when it is determined in step S17 that the trunk has not been opened with the key, it is determined whether the front door is opened with the key from the door key switch DKSW1 (DKSW2) and the door lock switch DLSW1 (DLSW2). The determination is made based on the off signal (step S21). If the front door is opened with the key, the system is released (step
S22), and returns to step S2.

On the other hand, when the front door is not opened with the key, whether any of the door, the hood, or the trunk is unlocked and closed → not opened by the proper key operation,
The determination is made based on the signal from the illegal unlocking operation detecting means 3 (step S23). This judgment is made by the door switches DSW1 to DSW4 and the hood switch F which constitute the unauthorized unlocking operation detecting means 3.
This is done by detecting the on / off signals from the DSW and trunk switch TRSW.

If it is determined "No" in this step S23, the process returns to step S11, while if it is determined "Yes", an alarm is started (step S24). In other words, the controller 11 (control unit 4) turns on the headlight 14 and the tail lamp 16, sounds the horn 12, and interlocks the starter motor 19. That is, under the control of the controller 11, the lines b and c are alternately switched to high / low levels at predetermined time intervals to energize / de-energize the relay coils 15l and 17l, thereby closing / closing the relay switches 15s and 17s. Open and flash headlights 14 and tail lamps 16. Further, by exciting the relay coil 13l at a low level on the line a, the relay switch 13s is closed and the horn 12 is activated. Further, the line d is set to the low level to excite the relay coil 18l, thereby opening the relay switch 18a and preventing the starter motor 19 from operating even when the ignition key switch is set to the "ST" position.

When it is determined in step S16 that all the doors are not closed, it is determined whether the key lock flag is set to 1 (step S24). If the key lock flag is 0, it means that the keyless lock state is set. Therefore, the prohibiting means 8 is prohibited from issuing an alarm to the alarming means 5 in response to the detection operation of the ultrasonic sensor 10, and thus the step S13 is performed. On the other hand, if the key lock flag is 1, the prohibiting means 8 does not perform the prohibiting operation in the key locked state. Therefore, when the ultrasonic sensor 10 is operating in the key lock state and all the doors are not closed, and the ultrasonic sensor 10 detects the presence of the operation object in the vehicle interior (step S25) After step S26, the same alarm generation state as described above is set. If the ultrasonic sensor 10 does not detect any moving object, the process returns to step S13.

After the alarm starts, the door key switch DKSW1 (DKSW2) indicates whether the front door or the trunk has been opened with a key. Door lock switch DLSW1 (DLSW2) and trunk key switch
The determination is made based on the ON / OFF signal from TRKSW (step S27). In this step S27, if it is determined that the front door or the trunk is unlocked by the proper key operation, the alarm is released (step S28), and then the theft alarm system is also released (step S29). On the other hand, if the front door or trunk cannot be opened with the key after the alarm is started, the alarm continues for 3 minutes (step
30) After 3 minutes have passed, the alarm is temporarily stopped (step S3
1) and returns to the process of step S13 again. In addition, before 3 minutes have elapsed, if it is determined in step S23 that something other than closed-> open is closed-> open (step S32), the process returns to step S26 for another 3 minutes. The alarm is activated. If it is determined to be "No" in step S32, the process returns to step S27.

After the alarm is stopped by the process of step S31, the process returns to the process of step S13, but at this time, it is determined that the alarm has already been issued by step S13, and the processes of step S33 and subsequent steps are executed. That is, step S
Similar to 27, door key switch DKSW1 (DKSW2), door lock switch DLSW1 (DLSW2) and trunk key switch are used to determine whether the front door or the trunk has been opened with a key.
The determination is made based on the ON / OFF signal from TRKSW (step S33). In this step S33, when it is determined that the front door or the trunk is unlocked by the proper key operation, the alarm is released (step S38), and then the theft alarm system is released (step S34). On the other hand, when the front door or the trunk cannot be opened with the key, it is determined whether any one of the door, the hood, and the trunk is closed and opened (step S35). Then, in this step S35, if "Yes" is determined, the process returns to step S26 to restart the alarm, and if "No" is determined, the step S35 is performed.
The processing shifts to 36 and S37. These steps S36, S
37 is the same as steps S24 and S25 described above,
It is determined whether the key lock flag is set to 1 (step S36). If the key lock flag is 0,
Since it is in the keyless lock state, the prohibition means 8
Thus, the alarm means 5 is prohibited from issuing an alarm in response to the detection operation of the ultrasonic sensor 10, and the process returns to step S13. On the other hand, if the key lock flag is 1, the prohibition means 8 is in the key lock state and the prohibition operation is not performed,
When the ultrasonic sensor 10 is operating and the ultrasonic sensor 10 detects the presence of the operation object in the vehicle interior (step S37), the process proceeds to step S26 and the alarm is generated. If the ultrasonic sensor 10 does not detect any moving object, the process returns to step S13.

As described above, according to the apparatus of the present embodiment, when the front door is keyless locked, this is detected by the keyless lock detection means 1 and the prohibition means 8 performs the prohibition operation to detect the detection operation of the ultrasonic sensor 10. While the alarm means 5 is prohibited from issuing an alarm, the key lock detection means 2 detects this when the front seat door is key-locked, and the alarm means 5 responds to the detection operation of the ultrasonic sensor 10 in the alert state. Will be able to generate an alarm. Therefore, by selecting the door lock means of the keyless lock or the key lock, it is possible to select whether or not to give an alarm by the ultrasonic sensor 10, and for example, when leaving a child or a pet in the vehicle cabin to be in the alert state. , Ultrasonic sensor 10 with keyless lock
Prohibiting false alarms prevents false alarms.

Further, according to the present embodiment, when the keyless lock detecting means 1 and the keylock detecting means 2 detect the keyless lock state and the keylock state, respectively, a warning state is set after the detection, and the unauthorized unlocking operation detecting means 3 causes When an illegal unlocking operation is detected, the control unit 4 controls the alarm means 5 to issue an alarm, so that an alarm can be issued regardless of whether the door is locked by the keyless lock or the key lock. Therefore, it is possible to prevent the vehicle from being stolen due to unauthorized unlocking without fail.

Further, according to the device of this embodiment, the door key switch
When the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state after the DKSW1 (or DKSW2) changes from the OFF state to the ON state, and when the door key switch DKSW1 (or DKSW2) keeps the ON state Sometimes the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state, and it is determined that the door is in the key lock state, so the door key switch DKSW1 (or DKSW2) turns to the OFF state. Key lock / key unlock can be determined based on the ON / OFF change of the door lock switch DLSW1 (or DLSW2) immediately before (that is, immediately before the key is pulled out).
Therefore, as shown in FIGS. 15 (a) and 15 (b), the key lock / unlock can be accurately determined even if the key is reversed in an extremely short time.

Further, according to the device of the present embodiment, the door key switch DKSW
By using the outputs from 1, DKSW2 and door lock switches DLSW1, DLSW2, it is possible to determine the key lock / unlock of the door. Therefore, there is a switch that detects the lock on the door key and a switch that detects the unlock. It is not necessary to provide one and the device can be constructed at low cost.

In the above embodiment, the alarm by the ultrasonic sensor 10 is issued in the case of the key lock, and the alarm by the ultrasonic sensor 10 is prohibited in the case of the keyless lock. The alarm by the ultrasonic sensor 10 may be given, and the alarm by the ultrasonic sensor 10 may be prohibited in the case of a key lock. That is, the prohibiting means 8 prohibits the alarm means 5 from issuing an alarm to the detection operation of the ultrasonic sensor 10 when the key lock detecting means 2 detects the key lock state, and the keyless lock detecting means 1 causes the keyless lock. The alarm means 5 may be configured to give an alarm in response to the detection operation of the ultrasonic sensor 10 only when the locked state is detected.

[Effects of the Invention] As described in detail above, according to the vehicle theft alarm device of the present invention, the keyless lock detecting means for detecting the keyless lock state, the keylock detecting means for detecting the keylock state, and the keyless lock. Unauthorized unlocking operation detection means that can detect unauthorized unlocking operation that does not depend on proper key operation after detecting the state or key lock status, and detect unauthorized unlocking operation by this unauthorized unlocking operation detection means In the case where the keyless lock state is detected by the keyless lock detecting means or the keyless lock state is detected by the keyless lock detecting means, the alarming means for issuing an alarm in case of Only when one of the predetermined cases when the key lock state is detected by the lock detection means, the ultrasonic sensor With an extremely simple configuration that issues an alarm for detection operation, an alarm can be issued regardless of whether the door is locked with a keyless lock or a key lock, and the vehicle is stolen due to unauthorized unlocking. In addition to being able to prevent it reliably and beforehand, by selecting a keyless lock or a key lock door locking means, it is possible to select whether or not to issue an alarm by an ultrasonic sensor, and leave children and pets in the vehicle interior. When the alarm state is set as the warning state, the door lock is performed so that the alarm by the ultrasonic sensor is not selected, so that the false alarm can be surely prevented from being generated.

[Brief description of drawings]

1 to 15 show a vehicle burglar alarm system according to an embodiment of the present invention. FIG. 1 is a block diagram thereof, FIG. 2 is a circuit diagram showing an overall configuration of the system, and FIG. FIG. 4 is a perspective view of the vehicle for explaining the respective switch positions, FIG. 4 is a view showing the arrangement state of the ultrasonic sensor in the vehicle interior,
FIG. 5 is an external view of the door outer handle assembly showing the arrangement of the door key switch, FIG. 6 is a view showing the configuration of the door key switch from the back side of the door outer handle assembly, and FIG. 7 is an arrow VII of FIG. FIG. 8 is a view showing an on / off operation range of the door key switch, and FIGS. 9 (a), (b), 10 (a), (b) and 11 are shown.
(A) and (b) are diagrams for explaining the operation of the door key switch, FIG. 12 is a flowchart for explaining the control procedure by the controller, and FIG. 13 is the door key lock / key unlock. 14A, 14B, and 15A and 15B are timing charts of a door key switch and a door lock switch for explaining the operation thereof. Is. DESCRIPTION OF SYMBOLS 1 ... Keyless lock detection means, 1a ... Keyless lock determination means, 2 ... Key lock detection means, 2a ... Key lock determination means, 3 ... Unauthorized unlocking operation detection means, 4 ... Control part, 5 ... ... alarm means, 8 ... prohibition means, 10 ... ultrasonic sensor, 10a ... transmitter, 10b ... receiver, 11 ... controller, 12 ... horn, 13 ... horn relay, 13l ... relay coil , 13s …… Relay switch, 14 …… Headlight, 15 …… Headlight relay, 15l …… Relay coil, 15s …… Relay switch, 16 …… Tail lamp, 17
…… Tail lamp relay, 17l …… Relay coil, 17s…
… Relay switch, 18 …… Starter inhibit relay, 18l …… Relay coil, 18s …… Relay switch, 18
t …… normally closed contact, 19 …… starter motor, 20 …… indicator lamp, 21 …… door outer handle assembly,
22 …… Key cylinder, 22a …… Key insertion slot, 23 …… Key rotor, 24 …… Lever, 25 …… Magnet, 26 …… Switch case, 27 …… Reed switch, 28 …… Fixing screw, 29…
… Rotation stop, DKSW1, DKSW2… Door key switch, DLN…
… Door lock knob, DLSW1 to DLSW4 …… Door lock switch, DSW1 to DSW4 …… Door switch, FDSW …… Hood switch, TRKSW …… Trunk key switch, TRSW …… Trunk switch.

Claims (1)

[Scope of utility model registration request] 1. A keyless lock detecting means for detecting a keyless lock state in which a door is locked by operating a door lock knob with a door without using a key, and a keylock state in which the door is locked by a key operation. Key lock detection means and an incorrect answer that can detect an unauthorized unlocking operation that does not depend on a proper key operation after the keyless lock detection means detects the keyless lock state or the key lock detection means detects the keylocked state A vehicle theft alarm device including a lock operation detecting means and an alarm means for issuing an alarm when the unauthorized unlocking operation detecting means detects an unauthorized unlocking operation, and can detect an object operating in a vehicle interior. In addition to providing an ultrasonic sensor, the alarm means is operated by the keyless lock detection means. It is configured to give an alarm to the detection operation of the ultrasonic sensor only in one of the predetermined cases when the state is detected or the key lock state is detected by the key lock detecting means. A vehicle burglar alarm device characterized by: