JP2005350990A - Anti-theft device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft device for a vehicle by which required operation to be performed by a user is reduced and merchantability of the vehicle is improved. <P>SOLUTION: The anti-theft device for the vehicle starts monitoring a theft action on the vehicle when all doors of the vehicle are closed and door locks are locked under a state of no-caution and when it is judged that a smart portable device 4 enabling smart entry does not exist in the vehicle interior. When it is judged that the smart portable device 4 exists in the vehicle interior, the monitoring on the theft action on the vehicle is prohibited. While monitoring the theft action on the vehicle, when the door lock is unlocked from the outside of the vehicle by a legitimate method, the state of no-caution is restored. When occurrence of the theft action on the vehicle is detected while monitoring, an alarm output starts and continues until the door lock is unlocked from the outside of the vehicle by the legitimate method or until a predetermined time passes. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle antitheft device that is mounted on a vehicle and prevents the vehicle from being stolen.

  Conventionally, when all doors provided in a vehicle are in a closed state and the door lock device provided in each door is in a locked state, a warning state is set. At this time, the ignition switch of the vehicle is turned on, or the door lock device There is a vehicle anti-theft device for preventing theft of a vehicle by generating an alarm signal when an alarm function is activated when any door provided in the vehicle is opened without being unlocked (For example, refer to Patent Document 1).

  In addition, the vehicle antitheft device is provided, and for example, a portable operating device carried by a vehicle user and a vehicle side door control mechanism arranged on the vehicle side are used, and the door lock device is kept in a safe state. There are keyless entry devices that can be locked or unlocked. Specifically, when the vehicle door is locked and the anti-theft part of the vehicle-side control mechanism installed in the vehicle is in the set state, the vehicle user carries the portable controller and approaches the vehicle. When the control unit of the side control mechanism stops the operation of the anti-theft unit for a certain period of time and the vehicle user touches the vehicle during that time, the door is changed from the locked state to the unlocked state. Therefore, when the door of the vehicle is locked and the portable controller is not close to the vehicle, the anti-theft unit monitors the vehicle for theft, while the vehicle user only brings the portable controller close to the vehicle. Thus, the vehicle door can be unlocked (see, for example, Patent Document 2).

When detecting an abnormality in the vehicle, the vehicle's ignition switch is turned on in a warning state, or one of the doors provided in the vehicle is opened without unlocking the door lock device. In addition to the event, as disclosed in Patent Document 2, for example, a contact (capacitance) sensor, a glass sensor, a vibration sensor, and the like are provided to detect an action of a person trying to steal a vehicle from sound or vibration. .
JP-A-60-5050 Japanese Patent Laid-Open No. 11-13320

  By the way, in the conventional vehicle antitheft device, for example, when a user of a vehicle tries to leave the vehicle by locking the door lock device while leaving a person in the vehicle interior (in the vehicle), for example, in the vehicle interior. Use the switch and customization function of the control contents of the device so that the alarm function does not operate even if the remaining person accidentally turns on the ignition switch of the vehicle or generates sound or vibration in the passenger compartment Thus, there is a problem that the user himself has to perform an operation to invalidate the alarm function, the convenience of the user is impaired, and the merchantability of the vehicle deteriorates.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle antitheft device that can reduce the operations required of a user and improve the merchantability of the vehicle.

  In order to solve the above-described problem, in the antitheft device for a vehicle according to the invention of claim 1, all doors provided in the vehicle are in a closed state, and a door lock device provided in each of the doors is in a locked state. An anti-theft means (for example, an anti-theft alarm device 6 in an embodiment to be described later) for detecting the theft and sending a request signal to a predetermined area, and an electronic key received as a response to the request signal When the authentication code included in the response signal from the smart mobile device 4 (for example, the smart portable device 4 in the embodiment described later) matches the vehicle-side authentication code provided in the vehicle in advance, the control means (for example, described later) A door lock control device 1) according to an embodiment, wherein the control means confirms that the electronic key remains in the vehicle compartment when all of the doors are closed. Transmits a request signal for, if said authentication code included in the response signal of the request signal and the vehicle-side authentication code compatible, and inhibits the operation control of the anti-theft unit.

  The anti-theft device for a vehicle having the above-described structure is configured such that the anti-theft means sets the vehicle in a warning state when all doors of the vehicle are in a closed state and the door lock device provided in each of the doors is in a locked state. Because the theft of the door is monitored, when all the doors are closed, the request signal sent from the control means to the interior of the vehicle confirms the presence of the electronic key. If it is possible, the control means that can control the operation of the in-vehicle device when the electronic key is present in the predetermined area prohibits the operation control of the antitheft means, thereby leaving the electronic key in the vehicle interior. Even if you do not use a customized function to control switches or devices provided separately, the function of the anti-theft means is controlled to prevent the alarm signal from being generated by the anti-theft means. Door can be.

  A vehicle antitheft device according to a second aspect of the present invention is the vehicle antitheft device according to the first aspect, wherein the in-vehicle device includes the door lock device (for example, a door lock of an embodiment described later). It is characterized by that.

  The vehicle anti-theft device having the above-described structure is a door lock device that has the electronic key and the door lock device only by possessing the electronic key by controlling the operation of the door lock device as a vehicle-mounted device. Can be used as a so-called smart entry device that can be locked or unlocked.

According to the antitheft device for a vehicle according to claim 1, the antitheft means can be obtained by leaving the electronic key in the passenger compartment without using a switch or a customized function for controlling the contents of the device. It is possible to suppress the generation of an alarm signal by the anti-theft means by controlling the function.
Therefore, for example, even when a user of a vehicle tries to leave the vehicle by locking the door lock device while leaving a person in the vehicle interior, if the electronic key is left in the vehicle interior, a separately provided switch or The alarm function can be disabled without using the customization function of the control contents of the device, reducing the user's own operation to disable the alarm function and improving the convenience of the user. As a result, it is possible to achieve an effect of realizing a vehicle antitheft device capable of ensuring and improving the merchantability of the vehicle.

According to the antitheft device for a vehicle according to claim 2, a so-called smart entry device that can lock or unlock the door lock device only by holding the electronic key and the door lock device. Can be used as
Therefore, by configuring the vehicle antitheft device and the smart entry device of the present invention with common parts, it is possible to obtain an effect that the merchantability of the vehicle can be improved while suppressing an increase in the cost of the vehicle.

  Embodiments of the present invention will be described below with reference to the drawings.

(overall structure)
FIG. 1 is a block diagram showing a configuration of a vehicle antitheft device according to an embodiment of the present invention. The vehicle antitheft device according to the present embodiment is mounted on a vehicle, for example, and when all the doors of the vehicle are in a closed state and a door lock provided on each of the doors is in a locked state, It is a device that monitors theft behavior against.

  In FIG. 1, reference numeral 1 denotes a door lock control device, and the door lock control device 1 includes an ECU (Electronic Control Unit) and mainly performs opening / closing control of a door lock provided in a vehicle door. is there. The door lock control device 1 includes a control signal “door_SW” from a switch for detecting opening / closing of a vehicle door, a control signal “door knob_SW” from a switch for detecting opening / closing of the door lock by a door lock knob inside the door, A control signal “door KEY cylinder_SW” from the switch for detecting opening / closing of the door lock by the KEY cylinder outside the door, and a control signal “KEY_SW” from the switch for detecting ON / OFF of the ignition by the ignition key cylinder of the vehicle are input. ing.

  In addition, when the control signal “door_SW” is in the ON state, it indicates that any one of the doors of the vehicle is in the open state (open). Further, when the control signal “doorknob_SW” is in the ON state, it indicates that the door lock is locked by the door lock knob inside the door. In addition, when the control signal “door KEY cylinder_SW” is in the ON state, it indicates that the door lock is locked by the KEY cylinder outside the door. Further, when the control signal “KEY_SW” is in the ON state, it indicates that the ignition is turned on by the ignition key cylinder of the vehicle.

  On the other hand, the door lock control device 1 of this embodiment is connected to control signals from the smart ECU 2 and the keyless ECU 3, respectively, so that so-called smart entry or keyless entry is possible. Specifically, the smart ECU 2 is an ECU for controlling the smart entry function, and the smart ECU 2 is connected to a transmission / reception circuit 2b including an antenna 2a for transmitting / receiving signals to / from the smart portable device 4. . Then, when the ignition of the vehicle is OFF, the smart ECU 2 unlocks the door lock when the smart portable device 4 approaches within a predetermined range from the antenna 2a, and the smart portable device 4 moves within the predetermined range from the antenna 2a. When the door no longer exists, the door lock control device 1 is instructed to lock the door lock. The door lock control device 1 instructs the door lock opening / closing control by a “door lock” signal connected to each door lock provided on the door of the vehicle.

  The keyless ECU 3 is an ECU for controlling a keyless entry function, and an antenna 3 a for receiving a signal from the keyless portable device 5 is connected to the keyless ECU 3. The keyless ECU 3 unlocks the door lock when receiving a signal for unlocking the door lock from the keyless portable device 5 when the vehicle ignition is OFF, and locks the door lock from the keyless portable device 5. When the signal for doing so is received, the door lock control device 1 is instructed to lock the door lock. Similarly to the smart entry, the door lock control device 1 instructs the door lock opening / closing control by a “door lock” signal connected to each door lock provided on the door of the vehicle.

  The door lock control device 1 is supplied with the other power source “+ B” and a control signal “IG1” indicating the operation state of the ignition of the vehicle. The smart ECU 2 is also supplied with a power source “+ B” and a signal “IG1” indicating the ignition operation state of the vehicle. Similarly, the keyless ECU 3 is also supplied with a power source “+ B” and a signal “IG1” indicating the ignition operation state of the vehicle.

  In addition, the anti-theft alarm device 6 is used when a theft act on the vehicle occurs based on a theft detection device such as an ultrasonic sensor or a vibration sensor installed in the vehicle and a control signal from the door lock control device 1. It is a device that activates an alarm function and outputs an alarm signal. Specifically, when all the doors of the vehicle are in a closed state and the door locks provided on each of the doors are in a locked state, for example, in this state, the ignition of the vehicle is turned on, When the door lock control device 1 notifies that one of the doors provided in the vehicle has been opened without unlocking the lock, or when the sound is more than necessary by a theft detection device such as an ultrasonic sensor or a vibration sensor. When an alarm or vibration is detected, the alarm function is activated to output an alarm signal to the speaker 6a or the light emitting device 6b connected to the antitheft alarm device 6 to emit a loud sound, strong light, or conspicuous light. This prevents the vehicle from being stolen. The anti-theft alarm device 6 is supplied with power from the door lock control device 1.

(Control state transition)
Next, state transition in the control of the vehicle antitheft device of this embodiment will be described with reference to the drawings. FIG. 2 is a diagram illustrating state transitions in the operation of the vehicle antitheft device according to the present embodiment.
In FIG. 2, there are four control states in the operation of the vehicle antitheft device: A: “Disarming state”, B: “Preparation state”, C: “SET state”, and D: “Alarm state”. There is a state. Here, A: “Disarming state” is an unwarranted state in which the theft of the vehicle is not monitored, such as immediately after the initialization of the vehicle antitheft device is completed.

  B: “Preparation state” is a state during a grace period from when it is determined that it is necessary to start monitoring the theft to the vehicle until the actual monitoring of the theft against the vehicle is started. Furthermore, C: “SET state” is a state in which the door lock control device 1 and the anti-theft alarm device 6 monitor the occurrence of theft against the vehicle. D: “Alarm state” is a state in which an alarm is output by the anti-theft alarm device 6 when the door lock control device 1 and the anti-theft alarm device 6 detect the occurrence of theft to the vehicle.

Further, the vehicle antitheft device makes the control state transition as shown in FIG. 2 using an input described below as a trigger.
First, the initialization of the vehicle antitheft device is completed, and when A: “Disarming state”, all doors are closed and the door locks are locked, and the smart portable device 4 is placed in the vehicle interior (inside the vehicle). ), The control state is changed from A: “Disarming state” to B: “Preparation state” (state transition SE1). On the other hand, if any of the doors of the vehicle is opened during B: “Preparation state” or the door lock is unlocked by the door lock knob inside the door, the control state is changed from B: “Preparation state”. A: Transition to the “Disarming state” (state transition SE2).

Further, when a predetermined time has elapsed in B: “preparation state”, the control state is changed from B: “preparation state” to C: “SET state” (state transition SE3).
In C: “SET state”, if the door lock is unlocked from the outside of the vehicle by a legitimate method, it is determined that the user of the vehicle has returned, and the control state is changed from C: “SET state” to A: Transition to the “Disarming state” (state transition SE4).
On the other hand, in C: “SET state”, if the theft of the vehicle is detected, the control state is changed from C: “SET state” to D: “alarm state” (state transition SE5).

Then, the alarm output (alarm) is continued until the door lock is unlocked from the outside of the vehicle by a legitimate method or until a predetermined time elapses (state transition SE6).
Further, in D: “alarm state”, when a predetermined time has elapsed since the start of alarm output (alarm), the control state is changed from D: “alarm state” to C: “SET state” to the vehicle. Monitoring of the theft is continued (state transition SE7).
On the other hand, when the door lock is unlocked from the outside of the vehicle by a legitimate method in D: “alarm state”, it is determined that the user of the vehicle has returned, and the control state is changed from D: “alarm state” to A: The transition to the “Disarming state” is made to return the monitoring of the theft to the vehicle to the initial state (state transition SE8).

(Operation of the vehicle antitheft device)
Next, the operation of the vehicle antitheft device of this embodiment will be described in detail with reference to the drawings. 3, 4 and 5 are flowcharts showing the operation of the vehicle antitheft device of this embodiment.
3, first, the entire apparatus is initialized (initialized), and A: “Disarming state” shown in FIG. 2 is set (step S1).
Then, the door lock control device 1 determines whether the ignition of the vehicle is turned on, for example, by smart entry, and whether the ignition of the vehicle is on from the state of the control signal “IG1” (step S2).
In step S2, if the ignition of the vehicle is not in the ON state (NO in step S2), the door lock control device 1 next performs the ignition from the state of the control signal “KEY_SW” by the ignition key cylinder for the vehicle. It is determined whether or not it is turned on (step S3).

  If the ignition of the vehicle is ON in step S2 (YES in step S2), or the ignition is turned ON by the ignition key cylinder of the vehicle in step S3 (YES in step S3). In this case, the door lock control device 1 returns to step S2 and monitors the state of the control signal “IG1” as A: “Disarming state” shown in FIG.

On the other hand, when the ignition is not turned on by the ignition key cylinder of the vehicle in step S3 (NO in step S3), the door lock control device 1 determines whether any of the doors of the vehicle from the state of the control signal “door_SW”. It is determined whether or not has changed from the open state to the closed state (step S4).
If any of the doors of the vehicle has not changed from the open state to the closed state in step S4 (NO in step S4), the door lock control device 1 determines that the vehicle is in the state of the control signal “door_SW”. It is determined whether or not all the doors are closed (step S5).
In step S5, if all the doors of the vehicle are not closed (any door is open) (NO in step S5), the door lock control device 1 returns to step S2 and returns to FIG. A: The state of the control signal “IG1” is monitored as “Disarming state”.

Moreover, when any door of the vehicle changes from the open state to the closed state in step S4 (YES in step S4), the door lock control device 1 determines whether or not the smart portable device 4 exists in the vehicle interior. In order to confirm, communication (in-vehicle communication) with respect to the smart portable device 4 is executed in the vehicle interior (step S6).
Next, it is determined from the state of the control signal “door knob_SW” whether or not the door lock is locked by the door lock knob inside the door (step S7).
In step S7, when the door lock is not locked by the door lock knob inside the door (NO in step S7), the door lock control device 1 proceeds to step S5, and whether or not all the doors of the vehicle are closed. Is determined (step S5).

In step S5, when all the doors of the vehicle are in the closed state (YES in step S5), the door lock control device 1 starts the door from the state of the control signal “door KEY cylinder_SW” by the KEY cylinder outside the door. It is determined whether or not the lock is locked (step S8).
In step S8, when the door lock is not locked by the KEY cylinder outside the door (NO in step S8), the door lock control device 1 receives a keyless lock signal for instructing locking of the door lock from the keyless ECU 3. It is determined whether it has been done (step S9).

In step S9, if the keyless lock signal is not input from the keyless ECU 3 (NO in step S9), the door lock control device 1 has received a smart lock signal from the smart ECU 2 to instruct locking of the door lock. It is determined whether or not (step S10).
In step S10, when the smart lock signal is not input from the smart ECU 2 (NO in step S10), the door lock control device 1 returns to step S2, and the control signal is A: “Disarming state” shown in FIG. The state of “IG1” is monitored.

  On the other hand, when the door lock is locked by the door lock knob inside the door in step S7 (YES in step S7), or when the door lock is locked by the KEY cylinder outside the door in step S8 (YES in step S8). Alternatively, in step S9, either a keyless lock signal is input from the keyless ECU 3 (YES in step S9), or a smart lock signal is input from the smart ECU 2 in step S10 (YES in step S10). In this case, the process proceeds to step S11 in FIG. 4, and the door lock control device 1 determines whether or not the smart portable device 4 exists in the vehicle interior (step S11).

If the smart portable device 4 is present in the vehicle interior in step S11 (YES in step S11), the door lock control device 1 returns to step S2 and displays the control signal “A” as shown in FIG. The state of “IG1” is monitored.
In step S11, when the smart portable device 4 does not exist in the vehicle interior (NO in step S11), the door lock control device 1 and the anti-theft alarm device 6 detect the vehicle as a result of all persons leaving the vehicle interior. It is determined that it is necessary to start monitoring the theft, and the process proceeds to B: “Preparation state” shown in FIG. 2 in order to monitor the theft for the vehicle (step S12).
And the timer which measures the grace time until the monitoring of the theft act with respect to a vehicle is started is started (step S13).

When the timer is started, the door lock control device 1 determines from the state of the control signal “door_SW” whether any of the doors of the vehicle has been opened (step S14).
If any of the doors of the vehicle is not opened in step S14 (NO in step S14), the door lock control device 1 starts the door from the state of the control signal “door knob_SW” by the door lock knob inside the door. It is determined whether or not the lock is unlocked (step S15).

  In step S15, if the door lock is not unlocked by the door lock knob inside the door (NO in step S15), whether the timer for measuring the grace time until the monitoring of the theft against the vehicle has expired If the time has not yet expired (NO in step S16), the door lock control device 1 returns to step S14, and from the state of the control signal “door_SW”, the door of the vehicle The state is monitored (step S14).

  On the other hand, when any door of the vehicle is opened in step S14 (YES in step S14), or in step S15, the door lock is unlocked by the door lock knob inside the door (YES in step S15). In any case, the door lock control device 1 returns to step S2, and monitors the state of the control signal “IG1” as A: “Disarming state” shown in FIG.

In step S16, when the timer for measuring the grace time until the monitoring of the theft against the vehicle is started (YES in step S16), the door lock control device 1 and the anti-theft alarm device 6 In order to monitor the theft, B: transitions from “preparation state” to C: “SET state” shown in FIG. 2 (step S17).
Next, the door lock control device 1 determines whether or not a keyless unlock signal instructing unlocking of the door lock is input from the keyless ECU 3 (step S18).

In step S18, when the keyless unlock signal is not input from the keyless ECU 3 (NO in step S18), the door lock control device 1 receives a smart unlock signal from the smart ECU 2 to instruct unlocking of the door lock. It is determined whether or not an input has been made (step S19).
In step S19, when the smart unlock signal is not input from the smart ECU 2 (NO in step S19), the door lock control device 1 starts the KEY cylinder outside the door from the state of the control signal “door KEY cylinder_SW”. To determine whether the door lock has been unlocked (step S20).

  Further, when a keyless unlock signal is input from the keyless ECU 3 at step S18 (YES in step S18), or when a smart unlock signal is input from the smart ECU 2 at step S19 (YES at step S19), or If the door lock is unlocked by the KEY cylinder outside the door in step S20 (YES in step S20), the door lock control device 1 returns to step S2 and displays A: “Disarming” shown in FIG. As the “state”, the state of the control signal “IG1” is monitored.

On the other hand, when the door lock is not unlocked by the KEY cylinder outside the door in step S20 (NO in step S20), the door lock control device 1 and the antitheft alarm device 6 determine whether an abnormality has occurred in the vehicle. To monitor.
Specifically, the process proceeds to step S21 in FIG. 5, and the door lock control device 1 determines from the state of the control signal “door_SW” whether or not any of the doors of the vehicle has been opened (step S21). ).
If any of the doors of the vehicle is not opened in step S21 (NO in step S21), the door lock control device 1 starts the door from the state of the control signal “door knob_SW” by the door lock knob inside the door. It is determined whether or not the lock is unlocked (step S22).

In step S22, if the door lock is not unlocked by the door lock knob inside the door (NO in step S22), the door lock control device 1 determines that the vehicle ignition is on from the state of the control signal “IG1”. It is determined whether or not (step S23).
In step S23, if the ignition of the vehicle is not turned on (NO in step S23), the anti-theft alarm device 6 uses an anti-theft device such as an ultrasonic sensor or a vibration sensor, It is determined whether or not vibration has been detected (step S24).

  In step S24, when the anti-theft alarm device 6 does not detect unnecessary sounds or vibrations by the anti-theft device (NO in step S24), the process returns to step S17, and the door lock control device 1 and the anti-theft alarm device. 6 continues to monitor the vehicle in C: “SET state” shown in FIG. 2 for monitoring the theft of the vehicle (step S17).

  On the other hand, when any door of the vehicle is opened in step S21 (YES in step S21), or in step S22, the door lock is unlocked by the door lock knob inside the door (YES in step S22). ), Or in any case where the ignition of the vehicle is turned on in step S23, the door lock control device 1 notifies the anti-theft alarm device 6 of these to instruct the operation of the alarm function, The door lock control device 1 and the anti-theft alarm device 6 shift from C: “SET state” to D: “alarm state”, and the anti-theft alarm device 6 starts alarm output (alarm) (step S25).

The anti-theft alarm device 6 also shifts from C: “SET state” to D: “alarm state” when an excessive sound or vibration is detected by the anti-theft device (YES in step S24). Output (alarm) is started (step S25).
Then, a timer for measuring the duration of alarm output (alarm) is started (step S26).
When the timer is started, the door lock control device 1 determines whether or not a keyless unlock signal instructing unlocking of the door lock is input from the keyless ECU 3 (step S27).

In step S27, when the keyless unlock signal is not input from the keyless ECU 3 (NO in step S27), the door lock control device 1 receives a smart unlock signal from the smart ECU 2 to instruct unlocking of the door lock. It is determined whether or not an input has been made (step S28).
In step S28, when the smart unlock signal is not input from the smart ECU 2 (NO in step S28), the door lock control device 1 starts the KEY cylinder outside the door from the state of the control signal “door KEY cylinder_SW”. Whether or not the door lock is unlocked is determined (step S29).

  On the other hand, if a keyless unlock signal is input from the keyless ECU 3 in step S27 (YES in step S27), or if a smart unlock signal is input from the smart ECU 2 in step S28 (YES in step S28), or If the door lock is unlocked by the KEY cylinder outside the door in step S29 (YES in step S29), the anti-theft alarm device 6 stops the alarm output (alarm) (step S30). The door lock control device 1 returns to step S2 and monitors the state of the control signal “IG1” as A: “Disarming state” shown in FIG.

In step S29, if the door lock is not unlocked by the KEY cylinder outside the door (NO in step S29), it is determined whether or not the timer for measuring the duration of the alarm output (alarm) has expired. (Step S31) If the time has not yet expired (NO in Step S31), the door lock control device 1 returns to Step S27 with D: “alarm state” shown in FIG. It is monitored whether or not a signal is input (step S27).
When the timer for measuring the duration of the alarm output (alarm) has expired (YES in step S31), the antitheft alarm device 6 stops the alarm output (alarm) (step S32) and returns to step S17. The door lock control device 1 and the anti-theft alarm device 6 continue to monitor the vehicle in C: “SET state” shown in FIG. 2 for monitoring the theft of the vehicle (step S17).

  In the above-described embodiment, the vehicle antitheft device does not necessarily require the antitheft device, and may monitor the theft against the vehicle based only on the signal from the door lock control device 1.

  As described above, in the vehicle antitheft device of this embodiment, when initialization (initialization) is completed and the vehicle is in an alarming state, all the doors provided in the vehicle are closed and the door lock is locked. In addition, when it is determined that the smart portable device 4 that enables smart entry does not exist in the vehicle interior, monitoring of the theft against the vehicle is started. On the other hand, when it is determined that the smart portable device 4 is present in the vehicle interior, monitoring of theft behavior against the vehicle is prohibited. Further, when the door lock is unlocked from the outside of the vehicle by a legitimate method while monitoring the theft of the vehicle, it is determined that the user of the vehicle has returned and the state returns to an unwarranted state. On the other hand, if it is detected that the vehicle has been stolen while monitoring the theft, the alarm output (alarm) is started and the door lock is unlocked from the outside of the vehicle by a legitimate method or until a predetermined Continue alarm output (alarm) until the time has elapsed.

As a result, it is possible to prevent theft by controlling the function of the antitheft device for vehicles without leaving the smart portable device 4 in the passenger compartment and without using a switch or a customized function for controlling the device. Generation of an alarm signal by the alarm device 6 can be suppressed.
Therefore, for example, even when the user of the vehicle tries to leave the vehicle by locking the door lock while leaving a person in the passenger compartment, if the smart portable device 4 is left in the passenger compartment, a separate switch is provided. The alarm function can be disabled without using the customization function of the control contents of the device and the device, and the user's required operation for disabling the alarm function can be reduced and the convenience of the user can be reduced. In addition, it is possible to achieve an effect of realizing a vehicle antitheft device that can secure the vehicle and improve the merchantability of the vehicle.

  Further, by realizing a vehicle antitheft device using a device necessary for the smart entry function, the vehicle antitheft device and the smart entry device can be configured with common parts, which increases the cost of the vehicle. The effect that the merchantability of the vehicle can be improved is obtained.

It is a block diagram which shows the structure of the antitheft device for vehicles of one Example of this invention. It is a figure which shows the state transition in operation | movement of the antitheft device for vehicles of the Example. It is a flowchart which shows operation | movement of the antitheft device for vehicles of the Example. It is a flowchart which shows operation | movement of the antitheft device for vehicles of the Example. It is a flowchart which shows operation | movement of the antitheft device for vehicles of the Example.

Explanation of symbols

1 Door lock control device (control means)
4 Smart portable devices (electronic keys)
6 anti-theft alarm device (anti-theft means)

Claims (2)

Anti-theft means for detecting a theft and providing an alarm when all doors provided in the vehicle are in a closed state and the door lock device provided in each of the doors is in a locked state;
When the authentication code included in the response signal from the electronic key that is transmitted as a response to the request signal is transmitted to the predetermined area and is received as a response to the request signal, matches the vehicle-side authentication code provided in the vehicle in advance. Control means for controlling operation,
When all of the doors are closed, the control means transmits a request signal for confirming the remaining of the electronic key in the vehicle interior of the vehicle, and the authentication included in the response signal of the request signal An antitheft device for a vehicle, wherein when the code and the vehicle side authentication code are matched, operation control of the antitheft means is prohibited. The vehicle antitheft device according to claim 1, wherein the on-vehicle device includes the door lock device.

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