JP5671852B2 - Unlocking device - Google Patents

Description

  The present invention relates to an unlocking device that releases various lock states and unlocks them in an emergency in an automobile.

  As an unlocking device that effectively performs an emergency unlocking procedure in an emergency such as a collision accident, for example, a vehicle locking device disclosed in Patent Document 1 can be cited.

  In the vehicular locking device, when the emergency detection unit detects an emergency such as a collision, the control unit releases the locked state of the various locking devices to the unlocked state.

  FIG. 4 is a block diagram schematically showing a configuration of a conventional unlocking device represented by the unlocking device disclosed in Patent Document 1. In FIG.

  As shown in the figure, an in-vehicle ECU 20 having an unlock control function for the lock device 30 includes a CPU 21, a drive circuit 22 and a WD 23 inside.

The CPU 21 determines the presence / absence of an emergency such as a collision accident based on the emergency determination information E1 and E2, and outputs a CPU control signal S21 to the drive circuit 2 when the emergency is determined (indicated) . The emergency determination information E1 includes an airbag SW and a vehicle speed (history), and the emergency determination information E2 includes a power supply relay, a shift position, and ID verification effectiveness (OK).

  The drive circuit 2 outputs the drive signal S22 instructing the unlock state to the lock device 30 based on the CPU control signal S21 instructing the unlock, thereby releasing the predetermined lock state of the lock device 30 and unlocking it. To. Various locks such as a steering lock, a shift lock, an immobilizer (riser), a door lock, and a parking brake can be considered as the lock by the lock device 30.

  The WD (watchdog) 23 periodically monitors the pulse signal P21 from the CPU 21, and recognizes a state in which the pulse by the pulse signal P21 is interrupted for a predetermined period, thereby detecting an operation abnormality of the CPU 21 and detecting an operation abnormality. Sometimes an active reset signal RT is output. Note that the WD 23 outputs a reset signal RT in an inactive state except when an operation abnormality is detected.

  Further, the lock device 30 outputs to the CPU 21 a lock device monitor signal S30 which is a monitor signal for instructing the current lock / unlock state. Therefore, the CPU 21 can confirm whether or not the drive signal S22 of the drive circuit 22 is correctly output according to the instruction of the CPU control signal S21 by the lock device monitor signal S30.

  In such a configuration, when a collision accident or the like occurs in a vehicle equipped with the on-vehicle ECU 20 and the emergency determination information E1 or the like instructing to turn on the airbag SW is detected by the CPU 21, the CPU 21 generates an emergency. By determining and outputting the CPU control signal S21 instructing unlocking, various lock states of the lock device 30 can be released via the drive circuit 22 to automatically enter the unlock state.

Japanese Patent No. 3578017

  However, the conventional unlocking device has a problem that no countermeasure is taken when the unlocking control unit (corresponding to the CPU 21 in FIG. 4) itself fails.

  The present invention has been made to solve the above-described problems, and is capable of releasing the locked state and bringing the unlocked state into an unlocked state in the event of an emergency even if a failure occurs in the normally used unlocking control unit. The purpose is to obtain.

The unlocking device according to claim 1 of the present invention is an unlocking device that releases a locked state in a predetermined locking device in an automobile and puts it into an unlocked state, and includes emergency determination information indicating various states in the automobile. When the occurrence of a predetermined emergency situation is determined, the normal unlock control drive unit that releases the locked state by the predetermined locking device to enter the unlocked state, and enters the operating state when the predetermined state is established. When the occurrence of the predetermined emergency is determined based on at least a part of the information, the forced unlocking is performed separately from the normal unlock control drive unit, which releases the locked state by the predetermined locking device and sets the unlocked state. A lock control drive unit, and monitoring the control unit detection signal output from the normal unlock control drive unit Serial usually further comprises an abnormality detection unit for detecting an abnormal operation of the unlock control driver, the predetermined state includes a state where the operation abnormality is detected in the normal unlock control driver by the abnormality detecting unit.

The unlocking device according to claim 2 is the unlocking device according to claim 1, further comprising a forced unlocking operation unit capable of outputting an operation-on request signal by a predetermined operation in the automobile, wherein the predetermined state is , Including a state in which the operation on request signal is output from the forced unlocking operation unit.

Unlocking apparatus according to the third aspect, an unlocking device according to claim 1 or claim 2, provided in the same unit with at least said normal the forced unlocking control driver and the unlock control driver It is done.

The unlocking device according to claim 4 is the unlocking device according to claim 1 or 2 , wherein the normal unlock control drive unit and the forced unlock control drive unit are in different units independent from each other. Are provided respectively.

  In the present invention of claim 1, even if an operation abnormality occurs in the normal unlock control drive unit, the predetermined state is established and the forced unlock control drive unit is set in the operation state, thereby making it possible to When an emergency situation occurs, the locked state by the predetermined locking device can be released to enter the unlocked state.

In addition, in the present invention of claim 1 , since the abnormality detection unit detects an abnormal operation of the normal unlock control drive unit, if the operation abnormality occurs in the normal unlock control drive unit, the forced unlocking is surely performed. The control drive unit can be put into an operating state, and when an emergency occurs, a locked state by a predetermined locking device can be reliably released to an unlocked state.

In the present invention according to claim 2 , when an operation abnormality occurs in the normal unlock control drive unit, the driver or the like operates the forced unlock operation unit to output an operation on request signal, thereby The forced unlock control drive unit can be put into an operating state without relying on a means for detecting an abnormality of the control drive unit, and a locked state by a predetermined locking device can be released to an unlocked state when an emergency state occurs.

In the present invention of claim 3 , since the normal unlock control drive unit and the forced unlock control drive unit are provided in the same unit, the degree of integration in the apparatus can be improved.

In the present invention according to claim 4 , since the normal unlock control drive unit and the forced unlock control drive unit are provided in different units independent from each other, even if one unit as a whole becomes unusable, the other unit If the unlocking control drive unit (normal or forcible) existing in the system operates normally, the predetermined locking device can be unlocked, and the unlocking control function can be performed almost certainly even in the event of an emergency. be able to.

It is a block diagram which shows typically the structure of the unlocking apparatus which is Embodiment 1 of this invention. It is a block diagram which shows typically the structure of the unlocking apparatus which is Embodiment 2 of this invention. It is a block diagram which shows typically the structure of the unlocking apparatus which is Embodiment 3 of this invention. It is a block diagram which shows typically the structure of the conventional unlocking apparatus.

<Embodiment 1>
1 is a block diagram schematically showing a configuration of an unlocking apparatus according to Embodiment 1 of the present invention.

  As shown in the figure, an in-vehicle ECU 11 having an unlock control function for the lock device 30 includes a CPU 1, a drive circuit 2, a WD 3, a forced unlock control unit 4, and a drive circuit 5.

The CPU 1 determines the presence / absence of an emergency such as a collision accident (predetermined emergency) based on the emergency determination information E1 and E2, and instructs the unlocking (showing) the CPU control signal S1 when the emergency is determined. Output to the drive circuit 2. The emergency determination information E1 includes an airbag SW and a vehicle speed (history), and the emergency determination information E2 includes a power supply relay, a shift position, and ID verification effectiveness (OK).

  Hereinafter, individual information of the emergency determination information E1 and E2 will be described. For example, even if the airbag SW is in an on state (the airbag is activated), if the vehicle speed history indicates a stop state, a deliberate airbag differential due to theft or the like is estimated instead of a collision accident. Similarly, if the vehicle is traveling, it is estimated that the power relay instructs to turn on the ignition, and the shift position is estimated to be a drive. Moreover, since the regular driver is driving normally, it is estimated that ID collation effectiveness is good (OK).

  Thus, by comprehensively determining the information on the emergency determination information E1 and E2, the CPU 1 can accurately determine the presence or absence of an emergency such as a collision accident.

  The drive circuit 2 outputs the drive signal S2 instructing the unlock state to the lock device 30 (predetermined lock device) based on the CPU control signal S1 instructing the unlock, thereby setting the predetermined lock state of the lock device 30. Release to unlock state. As a predetermined lock state by the lock device 30, lock states such as a steering lock (shift), a shift lock, an immobilizer (riser), a door lock, and a parking brake can be considered.

  As described above, when the CPU 1 and the drive circuit 2 determine the occurrence of an emergency based on the emergency determination information E1 and E2, the normal unlock control drive unit that releases the locked state by the lock device 30 and sets the unlocked state. Function.

  The WD (watchdog) 3 periodically monitors the pulse signal P1 from the CPU 1 and recognizes the state in which the pulse by the pulse signal P1 is interrupted for a predetermined period, thereby detecting the operation abnormality of the CPU 1 and detecting the operation abnormality. Sometimes an active reset signal RT is output. Note that WD3 outputs a reset signal RT in an inactive state except when an operation abnormality is detected.

  Further, the lock device 30 outputs to the CPU 1 a lock device monitor signal S30 which is a monitor signal for instructing the current lock / unlock state. Therefore, the CPU 1 can confirm whether or not the drive signal S2 of the drive circuit 2 is correctly output according to the instruction of the CPU control signal S1 by the lock device monitor signal S30.

  Further, the forced unlock control unit 4 receives the reset signal RT and enters an operating state when an active reset signal RT is input, and enters an inactive state when an inactive reset signal RT is input.

  The forced unlock control unit 4 determines the presence or absence of an emergency such as a collision accident based on the emergency determination information E1 in the operating state, and outputs a forced unlock control signal S4 that instructs unlocking when the emergency is determined. 5 is output. The compulsory unlock control unit 4 simplifies the internal configuration by simplifying the determination criteria from the CPU 1 based only on the emergency determination information E1.

  The drive circuit 5 outputs the drive signal S5 instructing the unlock state to the lock device 30 based on the forced unlock control signal S4 instructing the unlock, thereby releasing the predetermined lock state of the lock device 30 and unlocking. Set to locked state.

  In this way, when the forced unlock control unit 4 and the drive circuit 5 determine the occurrence of an emergency based on the emergency determination information E1, the forced unlock control that releases the locked state by the lock device 30 and sets the unlocked state. Functions as a drive unit.

  In such a configuration, when the CPU 1 is operating normally, the vehicle-mounted ECU 11 can exhibit the following unlock control function.

  When a collision accident or the like occurs in a vehicle equipped with the vehicle-mounted ECU 11 and the emergency determination information E1 and the emergency determination information E2 including information for instructing to turn on the airbag SW are detected by the CPU 1, the CPU 1 detects the collision accident or the like. The occurrence of an emergency (predetermined emergency) is determined, and the CPU control signal S1 instructing the unlocking is output, so that the various lock states of the lock device 30 are automatically set to the unlocked state via the drive circuit 2. Can be released automatically.

  On the other hand, when the CPU 1 is operating abnormally, the in-vehicle ECU 11 can exhibit the following unlock control function.

  The abnormal operation of the CPU 1 is detected by the WD 3 that monitors the pulse signal P1, and the reset signal RT is activated, so that the forced unlock control unit 4 is activated. In this case, unlock control by the CPU 1 is impossible, but unlock control by the forced unlock control unit 4 is possible instead.

  Therefore, for example, when it is recognized by the emergency determination information E1 that the airbag SW is ON and the vehicle speed has dropped rapidly, the forced unlock control unit 4 determines the occurrence of an emergency such as a collision accident, By outputting the forced unlock control signal S4 instructing unlocking, various lock states of the lock device 30 can be automatically released to the unlock state via the drive circuit 5.

  In the unlocking device of the first embodiment, even when an operation abnormality occurs in the CPU 1 constituting the normal unlock control drive unit, a state (predetermined state) in which the operation abnormality of the CPU 1 is detected by the WD 3 that is the abnormality detection unit. When it is established and the forced unlock control unit 4 is in the operating state, the locked state by the locking device 30 can be released and brought into the unlocked state when an emergency state occurs based on the emergency determination information E1.

  Furthermore, in the unlocking device of the first embodiment, since an abnormal operation of the CPU 1 is detected by the WD 3, when the abnormal operation occurs in the CPU 1, the forced unlock control unit 4 is surely set in the operating state and an emergency state occurs. Sometimes the locked state by the locking device 30 can be reliably released to the unlocked state.

  Further, in the first embodiment, since the CPU 1 and the forced unlock control unit 4 are provided in the same in-vehicle ECU 11, it is possible to improve the degree of integration in the unlock device.

<Embodiment 2>
FIG. 2 is a block diagram schematically showing the configuration of the unlocking apparatus according to Embodiment 2 of the present invention.

  As shown in the figure, an in-vehicle ECU 12 having an unlock control function for the lock device 30 includes a CPU 1, a drive circuit 2, a WD 3, a forced unlock control unit 4, and a drive circuit 5. A forced unlocking operation unit 8 is provided outside.

  The forced unlocking operation unit 8 is disposed at a predetermined position in the vehicle that can be operated by the driver or the like. When the driver or the like performs a predetermined operation, an operation on request signal RQ is sent to the forced unlocking control unit 4. Can be output.

  Since the operations of the CPU 1, the drive circuit 2, the WD 3, and the lock device 30 are the same as those of the in-vehicle ECU 11 of the first embodiment, the description thereof is omitted. However, it differs from the in-vehicle ECU 11 in that the reset signal RT of the WD 3 is not output to the forced unlock control unit 4.

  The forced unlock control unit 4 enters an operation state when the input of the operation on request signal RQ is detected, and enters the non-operation state when the input of the operation on request signal RQ is not detected.

  The forced unlock control unit 4 determines the presence or absence of an emergency such as a collision accident based on the emergency determination information E1 in the operating state, and outputs a forced unlock control signal S4 that instructs unlocking when the emergency is determined. 5 is output.

  The drive circuit 5 outputs the drive signal S5 instructing the unlock state to the lock device 30 based on the forced unlock control signal S4 instructing the unlock, thereby releasing the predetermined lock state of the lock device 30 and unlocking. Set to locked state.

  In such a configuration, when the CPU 1 is operating normally, the in-vehicle ECU 12 can exhibit the unlock control function of the CPU 1 as in the in-vehicle ECU 11 of the first embodiment.

  On the other hand, when the CPU 1 is operating abnormally, the in-vehicle ECU 12 can exhibit the following unlock control function.

  When the driver or the like in the vehicle recognizes the abnormal operation of the CPU 1, the driver or the like operates the forced unlock operation unit 8 to generate the operation on request signal RQ. Then, the forced unlock control part 4 will be in an operation state. In this case, there is a high possibility that the unlock control by the CPU 1 is impossible, but the unlock control by the forced unlock control unit 4 can be reliably performed.

  Therefore, if the forced unlock control unit 4 determines the occurrence of an emergency based on the emergency determination information E1, the forced unlock control unit 4 outputs the forced unlock control signal S4 instructing the unlock to lock the drive circuit 5 via the drive circuit 5. Various lock states of the device 30 can be automatically released to an unlock state.

  In the unlocking device of the second embodiment, even if an operation abnormality occurs in the CPU 1, by establishing a state (predetermined state) in which the forced unlock operation unit 8 is operated to output the operation on request signal RQ, By setting the forced unlock control unit 4 to the operating state, it is possible to release the locked state by the locking device 30 and to enter the unlocked state when an emergency state occurs based on the emergency determination information E1.

  Furthermore, since the unlocking device according to the second embodiment can operate the forced unlock operation unit 8 by operating the forced unlock operation unit 8 based on the judgment of the driver or the like actually in the vehicle, the WD3 If the CPU 1 is expected to fail without relying on this determination, the forced unlock control unit 4 can release the locked state by the locking device 30 and set the unlocked state when an emergency state occurs.

  In the unlocking device of the second embodiment, the forced unlock operation unit 8 is operated in advance to set the forced unlock control unit 4 to the operating state, and the CPU 1 and the forced unlock control unit 4 2 It is also possible to use two unlock control units in parallel.

  In the second embodiment, since the CPU 1 and the forced unlock control unit 4 are provided in the same in-vehicle ECU 12, the degree of integration in the unlock device can be improved as in the first embodiment.

<Embodiment 3>
FIG. 3 is a block diagram schematically showing a configuration of an unlocking apparatus according to Embodiment 3 of the present invention.

  As shown in the figure, the in-vehicle ECU 13 having one unlock control drive unit for the lock device 30 is composed of a CPU 1, a drive circuit 2 and a WD 3, and has the other unlock control drive unit for the lock device 30. The in-vehicle ECU 14 has a forced unlock control unit 6 and a drive circuit 7 inside, and has a forcible unlock operation unit 8 outside the in-vehicle ECU 13 and the in-vehicle ECU 14.

  The forced unlocking operation unit 8 is disposed at a predetermined position in the vehicle that can be operated by the driver and the like, and operates with respect to the forced unlocking control unit 6 in the in-vehicle ECU 14 when the driver performs a predetermined operation. An ON request signal RQ can be output.

  Since the operations of the CPU 1, the drive circuit 2, the WD 3, and the lock device 30 in the in-vehicle ECU 13 are the same as those in the first and second embodiments, the description thereof is omitted. However, the reset signal RT of WD3 is different from the in-vehicle ECU 11 in that the reset signal RT is not output to the forced unlock control unit 6 in the in-vehicle ECU 14.

  The forced unlock control unit 6 enters an operation state when the input of the operation on request signal RQ is detected, and enters the non-operation state when the input of the operation on request signal RQ is not detected.

  The forced unlock control unit 6 determines the presence or absence of an emergency such as a collision accident based on the emergency determination information E1 in the operating state, and outputs a forced unlock control signal S6 that instructs unlocking when the emergency is determined. 7 is output.

  The drive circuit 7 outputs the drive signal S7 instructing the unlock state to the lock device 30 based on the forced unlock control signal S6 instructing the unlock, thereby releasing the predetermined lock state of the lock device 30 and unlocking. Set to locked state.

  As described above, the forced unlock control unit 6 and the drive circuit 7 serve as a forced unlock control drive unit that sets the lock state by the lock device 30 to the unlocked state when the occurrence of the emergency state is determined based on the emergency determination information E1. Function.

  In such a configuration, when the CPU 1 is operating normally, the in-vehicle ECU 13 can exhibit the unlock control function of the CPU 1 as in the in-vehicle ECU 11 of the first embodiment.

  On the other hand, when the CPU 1 is operating abnormally, the in-vehicle ECU 14 can exhibit the following unlock control function.

  When the driver or the like in the vehicle recognizes the abnormal operation of the CPU 1, the driver or the like operates the forced unlock operation unit 8 to generate the operation on request signal RQ. Then, the forced unlock control part 6 will be in an operation state. In this case, there is a high possibility that the unlock control by the CPU 1 in the in-vehicle ECU 13 is impossible, but the unlock control by the forced unlock control unit 6 in the in-vehicle ECU 14 can be reliably performed.

  Therefore, when the forced unlock control unit 6 determines the occurrence of an emergency based on the emergency determination information E1, the forced unlock control unit 6 outputs the forced unlock control signal S6 instructing the unlock, thereby locking the drive circuit 7 via the drive circuit 7. Various lock states of the device 30 can be automatically released to an unlock state.

  In the unlocking device according to the third embodiment, even if an abnormal operation occurs in the CPU 1, as in the second embodiment, the forced unlock control unit 6 is put into an operating state, so that an emergency is determined based on the emergency determination information E1. When the state occurs, the locked state by the lock device 30 can be released to the unlocked state.

  Furthermore, the unlocking device according to the third embodiment operates the forced unlocking operation unit 8 in the operating state by operating the forced unlocking operation unit 8 according to the judgment of the driver or the like actually in the vehicle, as in the second embodiment. Therefore, the forced unlock control unit 6 can release the locked state by the lock device 30 and put it into the unlocked state when the failure of the CPU 1 is assumed without relying on the determination of the WD 3.

  In addition, in the unlock device of the third embodiment, the CPU 1 and the forced unlock control unit 6 are provided in different in-vehicle ECUs 13 and in-vehicle ECUs 14 that are independent of each other. Therefore, even if one of the on-vehicle ECUs 13 and 14 becomes unusable, if the CPU 1 or the forced unlock control unit 6 existing in the other unit operates normally, the lock device 30 is unlocked. The unlock control drive unit can be operated with a relatively high probability even when an emergency occurs.

<Others>
In the in-vehicle ECU 12 of the second embodiment or the in-vehicle ECU 14 of the fourth embodiment, the forced unlock control unit 4 or the forced unlock control unit 6 is activated by the reset signal RT from the WD 3 as in the first embodiment. It is also possible to enter an operating state when inputting.

  The lock device 30 may be a device capable of locking / unlocking at least one of various locks set on the vehicle such as the steering lock (steel), shift lock, immobilizer (riser), door lock, parking brake and the like. It ’s fine.

  The forced unlock control unit 4 or the forced unlock control unit 6 inputs only the emergency determination information E1. However, the emergency determination information E2 is also input in the same manner as the CPU 1, and the occurrence of an emergency occurs based on detailed information. The presence or absence may be determined.

1 CPU
2,5,7 Drive circuit 3WD
4,6 Forced unlock control unit 8 Forced unlock operation unit 11-14 In-vehicle ECU
30 Locking device

Claims (4)

An unlocking device that releases a locked state in a predetermined locking device in an automobile to make it unlocked,
Based on the emergency determination information indicating various states in the automobile, when determining the occurrence of a predetermined emergency, the normal unlock control drive unit that releases the lock state by the predetermined lock device and makes the unlock state,
When the predetermined state is established, the operation state is established, and when the occurrence of the predetermined emergency state is determined based on at least a part of the emergency state determination information, the lock state by the predetermined lock device is released to the unlock state . A forced unlock control drive unit different from the normal unlock control drive unit ,
An abnormality detection unit for detecting an operation abnormality of the normal unlock control drive unit by monitoring a control unit detection signal output from the normal unlock control drive unit;
The predetermined state includes a state in which an operation abnormality of the normal unlock control drive unit is detected by the abnormality detection unit.
Unlocking device. The unlocking device according to claim 1,
A forced unlocking operation unit capable of outputting an operation-on request signal by a predetermined operation in the automobile;
The predetermined state includes a state where the operation on request signal is output from the forced unlock operation unit.
Unlocking device. The unlocking device according to claim 1 or 2,
At least the normal unlock control drive unit and the forced unlock control drive unit are provided in the same unit,
Unlocking device. The unlocking device according to claim 1 or 2,
The normal unlock control drive unit and the forced unlock control drive unit are respectively provided in different units independent from each other.
Unlocking device.

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