JP4841520B2 - Vehicle door lock control device - Google Patents

Description

The present invention relates to a door lock control equipment for a vehicle.

Conventionally, the predetermined condition door lock control apparatus for a vehicle for switching the locked state or unlocked state automatically doors of the vehicle when is satisfied (hereinafter, simply referred to as a door lock control apparatus) is known.

  The door lock control device detects when the vehicle is in a running state of a specified speed or more, the vehicle speed sensor detects the running state, forcibly switches the unlocked door to the locked state, and causes an erroneous operation while the vehicle is running. The door is prevented from opening. In addition, for example, when the shift position enters a position other than P from P, it is known that the door is forcibly switched to the locked state. This prevents accidents in which a passenger (especially a child) accidentally opens the door and falls down in a running vehicle, and prevents a suspicious person from entering.

  In addition, when the impact sensor installed in the vehicle detects an impact due to a collision accident or the like, the door lock control device forcibly urgently unlocks the locked door by estimating that the vehicle has encountered an accident. The door can be opened quickly. In addition, for example, when the shift position enters P from a position other than P, or when the ignition switch is switched from the on state to the off state, the door is forcibly switched to the unlocked state. Yes. This prevents the passenger from being rescued when an accident occurs, and reduces the troublesomeness of the passenger switching to the unlocked state when the vehicle stops.

  As the door lock control device, Patent Document 1 discloses that when the vehicle is detected to travel, the door opening operation means for operating the lock / unlock state of the door is disabled, and when the vehicle speed sensor detects the stop of the vehicle, the door is opened. It is disclosed that the operation of the operation means is made effective to improve the safety during traveling of the vehicle and the operability of the open door while stopped.

Further, in Patent Document 2, the vehicle speed sensor is disabled when the impact sensor detects an impact so that the door cannot be switched to the locked state after emergency unlocking. Is disclosed that prevents the door from being switched to a locked state when the vehicle is in a running state.
Japanese Patent No. 2630896 Japanese Patent No. 2657874

  However, if the door is not switched to the locked state even if the condition for switching to the locked state is established after emergency unlocking as in Patent Document 2, the door is erroneously estimated that the vehicle has encountered an accident. Is emergency unlocked, the door remains unlocked while the vehicle is running. As a result, there is a risk of danger to the vehicle occupant by accidentally opening the door.

The present invention has been made in view of that or斯, it is an object, even if an accident is predicted or estimated by mistake vehicle, to increase the safety of vehicle occupants is there.

  In order to achieve the above object, according to the present invention, the correctness / incorrectness of the prediction or estimation result of the vehicle accident is confirmed, and the door is switched to the locked state when the prediction or estimation is incorrect.

Specifically, engaging Ru de alloc control device of the present invention, connected to the lock switching unit for switching a vehicle door into the locked state or the unlocked state, the accident determination section to predict or estimate the accident of the vehicle, in parallel to each other by a plurality of unlock switch circuit for receiving respective signals from the accident determination section, when an accident is predicted or estimated by the accident determination section, at least one of the unlock switch circuit normally An unlock instruction unit that outputs an unlock signal for causing the lock switching unit to switch the locked door to an unlocked state when the function is functioning, and the unlock instruction unit includes the unlock signal. after outputting a confirmation unit for confirming the results of the correctness of the prediction or estimate by the accident determination section, are connected in series with each other A plurality of locking switch circuit which receives a signal from the serial check unit respectively, when it was accidentally result of the prediction or estimate is confirmed by the confirming unit, normally all of the lock switch circuit when functioning in respect the lock switching unit, and a lock instructing unit that outputs a lock signal to switch the door unlocked state to the locked state, before starting operation of the vehicle, for each unlocked A switch confirmation unit for confirming that the switch circuit and each lock switch circuit are not broken, and the switch confirmation unit confirms that at least one of the unlock switch circuit or the lock switch circuit is broken. And a function stop unit for stopping the function of the door lock control .

The door lock control device according to the present invention has a sudden deceleration detection unit that detects sudden deceleration of the vehicle, and the accident determination unit is configured to detect when the sudden deceleration of the vehicle is detected by the sudden deceleration detection unit. It is preferable to predict that the vehicle will encounter an accident.

The door lock control device according to the present invention preferably includes an unlock alarm unit that issues an alarm when an accident is predicted or estimated by the accident determination unit.

The switch confirmation unit may confirm that each unlocking switch circuit and each locking switch circuit are not out of order when the ignition switch of the vehicle is turned on.

  It is preferable that the accident determination unit estimates that the vehicle has encountered an accident when detecting the operation of an airbag provided in the vehicle.

  The confirmation unit may confirm the correctness / incorrectness of the result of the prediction or estimation by the accident determination unit based on the running state of the vehicle after the accident is predicted or estimated by the accident determination unit.

-Action-
Next, the operation of the present invention will be described .

De alloc control device includes a lock switching unit for switching a vehicle door into the locked state or the unlocked state, the accident determination section to predict or estimate the accident of the vehicle, when an accident is predicted or estimated by the accident determination section, An unlock instruction unit that outputs an unlock signal to the lock switching unit. The unlock signal is a signal that causes the lock switching unit to switch the locked door to the unlocked state.

In this door lock control device, when a vehicle accident is predicted or estimated, the door of the vehicle is switched from the locked state to the unlocked state, so that the door remains in the locked state and the vehicle occupant's accident vehicle As a result, the safety of the vehicle occupant is improved.

In particular, when it is estimated that the vehicle has encountered an accident when the accident determination unit detects the operation of an airbag provided in the vehicle, for example, the vehicle is a vehicle such as a collision accident or a fall accident between vehicles. to when an impact is air bag is activated in an accident to be added, since the door of the vehicle is switched from the locked state to the unlocked state, the safety of the vehicle occupant is improved. In addition, the cost is reduced and extra wiring is omitted as compared with a case where a vehicle accident is estimated based on a signal from a dedicated impact sensor.

Then, de alloc controller, after unlocking instruction unit outputs the unlock signal, a confirmation unit for confirming the results of the correctness of the prediction or estimate by accident determining unit, incorrect results predicted or estimated by confirming unit A lock instructing unit that outputs a lock signal that causes the lock switching unit to switch the unlocked door to the locked state. As a result, when the prediction or estimation result of the accident determination unit is incorrect, the door that has been unlocked is locked again. As a result, the safety of the vehicle occupant is further enhanced.

The confirmation unit can confirm the correctness / incorrectness of the prediction or estimation result by the accident determination unit based on the running state of the vehicle after the accident is predicted or estimated by the accident determination unit. In particular, when the confirmation unit detects the running state of the vehicle based on at least one of the change in the running speed of the vehicle and the running time, when the vehicle is turned upside down due to an accident and the tire runs idle, or on a sloped road. It is possible to accurately confirm the correctness of the prediction or estimation results even when the vehicle has been coasting after the accident or when the vehicle has been inertial due to the rear-end collision of the following vehicle after stopping due to the accident. Become.

Further, unlocking instruction section may have a plurality of unlock switch circuit for receiving respective signals from the accident determination section are connected in parallel with each other, normally without at least one of the unlock switch circuit fails If it functions, an unlock signal is output to the lock switching section even if another unlock switch circuit fails. As a result, the unlock instruction section reliably outputs an unlock signal to the lock switching section, as compared with the case where there is one unlock switch circuit, so that the safety of the vehicle occupant is further improved.

On the other hand, the lock instruction section may have a plurality of locking switch circuit for receiving respective signals from the checking unit are connected in series to each other and function properly without all of the plurality of locking switch circuit fails Only in this case, a lock signal is output to the lock switching unit. In other words, if at least one lock switch circuit fails and does not function, the lock signal is not output to the lock switching unit even if other lock switch circuits function normally. By the lock instruction unit, because it does not output the locking signal by mistake due to a failure of the lock switch circuit, the safety of the vehicle occupant is further enhanced.

Furthermore, the door lock control device includes a switch confirmation unit for confirming that each unlocking switch circuit and each locking switch circuit are not broken before the vehicle starts operation, and at least one unlocking unit by the switch confirmation unit. and possess the function stop unit stopping the function of the door lock control when it is confirmed that the switching circuit or the lock switch circuit is faulty, the locked state by mistake the door of the vehicle due to a failure of the switch circuit Alternatively, since it is prevented that the vehicle is switched to the unlocked state before the vehicle travels, the safety of the vehicle occupant is further enhanced.

For example, when the switch confirmation unit confirms that a plurality of switch circuits have not failed when the ignition switch of the vehicle is switched on, the above- described operation of the present invention is specifically achieved. It will be.

  In addition, when the vehicle has an abrupt deceleration detection unit that detects sudden deceleration of the vehicle, and the accident determination unit predicts that the vehicle will encounter an accident when the sudden deceleration of the vehicle is detected by the sudden deceleration detection unit. During sudden deceleration, the unlock instruction unit outputs an unlock signal to the lock switching unit, and the vehicle door is switched from the locked state to the unlocked state. Therefore, for example, when the driver brakes suddenly, the door is switched from the locked state to the unlocked state before the vehicle encounters an accident. As a result, when the vehicle encounters an accident, for example, even if the battery is damaged or the wiring is disconnected, the door is unlocked. As a result, the safety of the vehicle occupant is further improved.

  In addition, when the vehicle has an unlock warning unit that issues a warning when an accident is predicted or estimated by the accident determination unit, the vehicle occupant is immediately notified that the door has been switched to the unlocked state. This further enhances the safety of the vehicle occupant.

  According to the present invention, after the unlock instruction unit outputs the unlock signal, the confirmation unit that confirms the correctness of the prediction or estimation result by the accident determination unit, and the prediction or estimation result is incorrect by the confirmation unit When the vehicle is confirmed, the lock switching unit is provided with a lock instruction unit that outputs a lock signal for switching the unlocked door to the locked state. If so, you can relock the door that has been unlocked. As a result, the safety of the vehicle occupant can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment.

"Implementation-shaped state of the invention"
1 to 5 show an implementation form status of the present invention. Figure 1 is a block diagram showing a configuration of a de alloc control device S of the present embodiment forms condition. FIG. 2 is a block diagram showing the configuration of the CPU 22 and the output circuit 24 shown in FIG. FIG. 3 is a diagram illustrating the configuration of the unlock instruction unit 30 and the lock instruction unit 31. FIG. 4 is a flowchart of the procedure of the vehicle door lock control method. 5 and 6 are diagrams for explaining the procedure of failure confirmation .

De alloc control device S, as shown in FIG. 1, the door lock controller 10 is a lock switching unit for switching the vehicle door into the locked state or the unlocked state with respect to the door lock controller 10, the unlock signal or lock signal And a door lock control unit 20 for controlling the lock / unlock state of the door. Here, the unlock signal is a signal that causes the door lock controller 10 to switch the locked door to the unlocked state. On the other hand, the lock signal is a signal that causes the door lock controller 10 to switch the unlocked door to the locked state.

  The door lock controller 10 includes a lock relay circuit 11 and an unlock relay circuit 12. A lock signal wiring 13 extends from the lock relay circuit 11 and is connected to a lock drive motor 15 for switching the lock state of all the doors of the vehicle. An unlock signal wiring 14 extends from the unlock relay circuit 12 and is connected to the lock drive motors 15 of all the doors of the vehicle. Thus, the door lock controller 10 drives the lock drive motor 15 when receiving the unlock signal to switch the door from the locked state to the unlocked state, and locks the door from the unlocked state when receiving the lock signal. It is configured to switch to a state.

  The door lock control unit 20 includes an input circuit 21 to which a signal (external signal) from an external device is input, and a CPU that receives an external signal through the input circuit 21 and executes predetermined processing based on the external signal. (Central processing unit) 22, a power supply circuit 23 for supplying power to the input circuit 21 and the CPU 22, and an output circuit for receiving an output signal from the CPU 22 and outputting a lock signal or an unlock signal to the door lock controller 10 24.

  The input circuit 21 includes an ignition switch (IG), a vehicle speed sensor that is provided in the vehicle and detects the speed of the vehicle, a shift position detection unit that detects the position of the shift position, and an airbag and a meter connected to each other. It is connected to an air bag operation signal wiring that outputs an operation signal to a meter, a central lock switch, a central unlock switch, a state switch that is switched according to a door lock state (lock state or unlock state), and the like.

  That is, the input circuit 21 includes an ignition switch status signal, a vehicle speed signal indicating the vehicle speed, a shift position signal, an airbag operation signal, a central lock signal, a central unlock signal, a door lock status signal, and the like. Each is entered. Although the input circuit 21 is schematically shown as one block in FIG. 1, an input circuit is actually provided for each external signal input.

  The power supply circuit 23 is connected to the battery power supply (+ B) and the ground (GND) and is connected to the input circuit 21 and the CPU 22 to supply power to the input circuit 21 and the CPU 22.

  As shown in FIG. 2, the CPU 22 includes a sudden deceleration detection unit 36 that detects sudden deceleration of the vehicle, an accident determination unit 26 that predicts or estimates a vehicle accident, and a result of prediction or estimation by the accident determination unit 26 ( (Hereinafter also referred to as a determination result). The output circuit 24 includes an unlock instruction unit 30 that outputs an unlock signal to the door lock controller 10 and a lock instruction unit 31 that outputs a lock signal to the door lock controller 10.

  The accident determination unit 26 is configured to predict or estimate an accident based on an external signal input to the CPU 22 via the input circuit 21. Specifically, the accident determination unit 26 detects that the vehicle has an accident when the operation of the airbag is detected based on the output signal (airbag operation signal) of the airbag operation signal wiring provided in the vehicle. I guess that.

  In addition, the accident determination unit 26 predicts that the vehicle will encounter an accident when the sudden deceleration detection unit 36 detects a sudden deceleration of the vehicle. The sudden deceleration detection unit 36 detects sudden deceleration of the vehicle based on the vehicle speed signal from the vehicle speed sensor. For example, when the vehicle acceleration is detected to be −0.5 G, it is detected that the vehicle has suddenly decelerated.

  The unlock instruction unit 30 is configured to output an unlock signal to the door lock controller 10 when an accident is predicted or estimated by the accident determination unit 26. In other words, the unlock instruction unit 30 outputs an unlock signal to the door lock controller 10 when the operation of the airbag is detected or when the vehicle suddenly decelerates, and the door is emergency unlocked. It is like that.

  Further, the unlock instruction unit 30 is detected when the CPU 22 detects that the shift position has entered P from a position other than P based on the position signal of the shift position, or based on the state signal of the ignition switch. An unlock signal is output to the door lock controller 10 when it is detected that an unlock condition has been established, such as when it is detected that the ignition switch has been switched from the on state to the off state. .

As shown in FIG. 3, the unlock instruction unit 30 includes a first unlock switch circuit (UNLOCK1) 30a that is a plurality of unlock switch circuits that are connected in parallel to each other and receive signals from the accident determination unit 26, respectively. And a second unlock switch circuit (UNLOCK2) 30b. That is, the signals input from the accident determination unit 26 to the unlock instruction unit 30 are respectively received by the first unlock switch circuit 30a and the second unlock switch circuit 30b . At this time, at least one of the switch circuits 30a and 30b is normal. If functioning, the unlock instruction unit 30 is configured to output an unlock signal to the door lock controller 10.

  The confirmation unit 27 confirms the correctness of the determination result after the unlock instruction unit 30 outputs the unlock signal. The confirmation unit 27 confirms whether the determination result by the accident determination unit 26 is correct based on the traveling state of the vehicle after the accident is predicted or estimated by the accident determination unit 26. Specifically, the confirmation unit 27 detects the traveling state of the vehicle based on at least one of the change in the traveling speed of the vehicle and the traveling time, and confirms the correctness of the determination result based on the traveling state.

In the case where the correctness of the determination result is confirmed based on the traveling state detected based on both the change in the traveling speed and the traveling time of the vehicle, for example, after the accident is predicted or estimated by the accident determination unit 26, the predetermined speed (E.g., 30 km / h) or more, when the running state of the vehicle is detected for a predetermined time (e.g., 1 hour) or more, or within a predetermined time (e.g., 5 minutes), the vehicle is accelerated and decelerated a specified number of times (e.g., 3 when repeated more than one time), or the vehicle is adapted to confirm that was incorrect or the like when the re-running after stopping for a predetermined time (for example 10 minutes) or more, the determination result of the accident determination section 26. Here, stopping the vehicle does not mean stopping the ignition switch by turning it off, but means stopping the vehicle when the ignition switch is on.

In addition, when checking the correctness of the determination result based on the traveling state detected based only on the change in the traveling speed of the vehicle, for example, after the accident is predicted or estimated by the accident determination unit 26, the acceleration of the vehicle etc. when the deceleration is repeated each prescribed number of times (e.g., 3 times) or more, so as to confirm that the judgment result of the accident determination section 26 is incorrect.

In addition, when the correctness of the determination result is confirmed based on the traveling state detected based only on the traveling time of the vehicle, for example, after the accident is predicted or estimated by the accident determination unit 26, the predetermined time ( For example, when the traveling state of the vehicle is detected over one hour or more, it is confirmed that the determination result of the accident determination unit 26 is incorrect.

  The lock instruction unit 31 is configured to output a lock signal to the door lock controller 10 when the confirmation unit 27 confirms that the determination result is incorrect. The lock instructing unit 31 detects that the CPU 22 detects that the shift position has entered a position other than P from P based on the position signal of the shift position, or the vehicle speed is set to a specified speed based on the vehicle speed signal. A lock signal is output to the door lock controller 10 when it is detected that a lock condition has been established, such as when it is detected that the speed is higher (for example, 30 km / h).

The lock indication unit 31, as shown in FIG. 3, the first lock switching circuit (LOCK1) 31a and a second locking a plurality of locking switch circuit for receiving respective signals from the checking section 27 are connected in series with each other A switch circuit (LOCK2) 31b is included. That is, the signals input from the confirmation unit 27 to the lock instruction unit 31 are received by the first lock switch circuit 31a and the second lock switch circuit 31b , respectively, and at this time, at least one of the switch circuits 31a and 31b is out of order. The lock instructing unit 31 is configured not to erroneously output a lock signal to the door lock controller 10.

Furthermore, as shown in FIGS. 1 and 2, de alloc control device S includes an unlock alarm unit 37, CPU 22 has a switching confirmation section 38 and the function stop part 39.

  The unlock warning unit 37 issues a warning when an accident is predicted or estimated by the accident determination unit 26. In other words, when the sudden deceleration of the vehicle is detected by the sudden deceleration detection unit 36, or when the operation of the airbag is detected, the unlock warning unit 37 issues a warning.

The switch confirmation unit 38 confirms that each switch circuit 30a, 30b, 31a, 31b in the unlock instruction unit 30 and the lock instruction unit 31 is not broken before the vehicle starts driving. This switch confirmation part 38 confirms the presence or absence of a failure of each switch circuit 30a, 30b, 31a, 31b, when the ignition switch of a vehicle is switched to an ON state.

The function stop unit 39 stops the function of the door lock control when it is confirmed by the switch check unit 38 that at least one switch circuit 30a, 30b, 31a, 31b has failed. Here, functions to stop the door lock control means for stopping the de alloc control device S of the overall function. Then, when a failure of the output circuit 24 is confirmed, the de alloc controller S, so that the door of the vehicle is not switched to the locked state or unlocked state automatically.

-Control method-
Next, a description will be given of a control method of the vehicle door lock of the present type condition.

In the control method of the vehicle door lock according to the present exemplary form state, when an accident of the vehicle is predicted or estimated, it switched to the unlocked state of the door of the vehicle from the locked state. Specifically, when the operation of the airbag provided in the vehicle is detected, it is estimated that the vehicle has encountered an accident. It also predicts that the vehicle will encounter an accident when sudden deceleration is detected. Here, what is assumed as an accident is, for example, a collision accident between vehicles, a vehicle and a building, a vehicle fall accident, or the like. In the vehicle door lock control method, when the accident prediction or estimation is incorrect, the door that has been switched to the unlocked state is switched to the locked state again.

  As shown in FIG. 4, this vehicle door lock control method starts from normal control, and in subsequent step S1, it is first determined whether or not the vehicle is in operation, and in the case of YES (in vehicle operation). Advances to step S2, and if NO (the vehicle is not in operation), the process advances to step S20. Specifically, the CPU 22 detects whether the ignition switch is on or off, and determines that the vehicle is in operation when the ignition switch is in the on state, and determines that the vehicle is not in operation when in the off state. .

  In step S2, it is confirmed whether or not the vehicle door is locked. If YES (locked), the process proceeds to step S3. If NO (unlocked), the process proceeds to step S10. move on. Specifically, it is confirmed whether or not the door is in a locked state by a door lock state signal from a state switch input to the CPU 22 via the input circuit 21.

  In step S3, it is determined whether or not an emergency unlock condition is satisfied (whether or not a vehicle accident is predicted or estimated). If YES (emergency unlock condition is satisfied), the process proceeds to step S4. In the case of (emergency unlock condition not established), the process proceeds to step S5. Specifically, when it is estimated that the operation of the air bag is detected based on the air bag operation signal and the vehicle is in an accident, or when the vehicle is suddenly decelerated (for example, the vehicle acceleration based on the vehicle speed signal). Is detected to be −0.5G, etc.) and the vehicle is predicted to encounter an accident, it is determined that the emergency unlock condition is satisfied.

  In step S4, an alarm is issued and the process proceeds to step S6. In step S6, an unlock signal is output to the door lock controller 10 to bring the vehicle door into an unlocked state, and then the control proceeds to normal control.

  That is, when the operation of the airbag is detected, it is estimated that the vehicle has encountered an accident, and the door is switched from the locked state to the unlocked state. Also, when a sudden deceleration of the vehicle is detected, it is predicted that the vehicle will encounter an accident, and the door is switched from the locked state to the unlocked state. Then, when an accident is predicted or estimated in the vehicle, an alarm is issued and the door is switched from the locked state to the unlocked state.

  In step S5, it is determined whether or not the emergency unlock condition has been established in step S3 and the door has been switched to the unlocked state once (emergency unlock has been performed). In the case of (locking), the process proceeds to step S7, and in the case of NO (previously emergency unlocking has not been performed), the process proceeds to step S8.

  In step S7, it is determined whether or not the vehicle is in a stopped state. If YES (stopped), the process proceeds to step S9, and if NO (running), the control is shifted to normal control. In step S9, an unlock signal is output to the door lock controller 10 to bring the vehicle door into an unlocked state, and then control is transferred to normal control. As described above, after the emergency unlock is performed, the unlock signal is output again when the vehicle is stopped, so that the entire vehicle or a part of the vehicle such as the door is temporarily suspended due to the impact of an accident, for example. The lock drive motor 15 does not operate due to the influence of the deformation (the door is not unlocked), or the vehicle occupant hits the lock operation means for operating the lock, and the emergency unlocking is caused by anything. Even if the door is locked again, the locked door can be switched to the unlocked state again.

  In step S8, it is determined whether or not the unlock condition is satisfied. If YES (unlock condition is satisfied), the process proceeds to step S9, the door is switched to the unlocked state, and then the normal control is performed. If the unlock condition is not satisfied, the control shifts to normal control.

  In step S10, it is determined whether or not the occupant intentionally switches the door to the unlocked state by a central unlock switch or the like while the vehicle is traveling, and if YES (the vehicle occupant has intentionally switched to the unlocked state). The door lock control prevents the door from being automatically switched to the locked state until it is determined that the vehicle is not in operation after the transition to normal control, and NO (the vehicle occupant deliberately enters the unlocked state). If not, the process proceeds to step S11.

  In step S11, it is confirmed whether or not an emergency unlock has been performed, that is, whether or not an accident has been predicted or estimated in the vehicle in step S3. If YES (an accident has been predicted or estimated), the process proceeds to step S12. If NO (no accident was predicted or estimated), the process proceeds to step S13.

  In step S12, it is confirmed whether or not the vehicle has actually suffered an accident, and the correctness of the prediction or estimation result (determination result) in step S3 is confirmed. If YES (determination result is incorrect) Proceeding to step S14, if NO (the determination result is correct), the routine proceeds to normal control. Specifically, the vehicle running state is detected based on at least one of the change in the running speed of the vehicle and the running time after the vehicle accident is predicted or estimated, and the determination result based on the running state of the vehicle is detected. Confirm correctness.

When checking the correctness of the determination result based on the driving state detected based on both the change in the driving speed of the vehicle and the driving time, for example, after the accident is predicted or estimated, a predetermined speed (for example, 30 km / h) As described above, when the running state of the vehicle is detected for a predetermined time (for example, 1 hour) or more, or within a predetermined time (for example, 5 minutes), the acceleration and deceleration of the vehicle are each repeated a predetermined number of times (for example, 3 times). when in or the like in a predetermined time (e.g. 10 minutes) or more when re vehicle after stopping has traveled, it is determined that the determination result is incorrect. Here, the stop of the vehicle means that the vehicle stops when the ignition switch is on.

In addition, when confirming the correctness of the determination result based on the traveling state detected based only on the change in the traveling speed of the vehicle, for example, after the accident is predicted or estimated, the vehicle is accelerated and decelerated a specified number of times. When it is repeated (for example, 3 times) or more, it is determined that the determination result is incorrect.

In addition, when the correctness of the determination result is confirmed based on the traveling state detected based only on the traveling time of the vehicle, for example, after an accident is predicted or estimated, for example, a predetermined time (for example, one hour) or more For example, when the traveling state of the vehicle is detected, it is determined that the determination result is incorrect. Other determines that the determination in step S3 is correct at the time of.

  In step S13, it is determined whether or not the lock condition is satisfied. If YES (lock condition is satisfied), the process proceeds to step S14. If NO (lock condition is not satisfied), the process proceeds to normal control. In step S14, a lock signal is output to the door lock controller 10 to lock the door, and then the normal control is performed.

  In step S20, failure confirmation for confirming whether or not the output circuit 24 has failed is started. In this failure confirmation, as shown in FIG. 5 and FIG. 6, in step S21 after the failure confirmation is started, first, it is determined whether or not the operation is started, and in the case of YES (operation is started). Advances to step S22, and in the case of NO (operation is not started), returns to step S20. Specifically, it is determined that the operation is started when it is detected that the ignition switch is switched from the off state to the on state, and it is determined that the operation is not started when the ignition switch is in the off state.

  In step S22, both UNLOCK1 (first unlock switch circuit 30a) and UNLOCK2 (second unlock switch circuit 30b) are turned off, and the process proceeds to step S23. In step S23, it is checked whether or not there is a response to UNLOCKdet (output of the unlock instruction unit 30). If YES (no response), the process proceeds to step S24, and if NO (response is received), the process proceeds to step S35. Proceed to

  In step S24, only UNLOCK1 is turned on, and the process proceeds to step 25. In step S25, it is confirmed whether or not there is a response to UNLOCKdet. If YES (response is received), the process proceeds to step 26. If NO (response is not received), the process proceeds to step S35.

  In step S26, only UNLOCK2 is turned on, and the process proceeds to step S27. In step S27, it is confirmed whether or not there is a response to UNLOCKdet. If YES (response is received), the process proceeds to step S28. If NO (response is not received), the process proceeds to step S35.

  In step S28, only LOCK1 (first lock switch circuit 31a) is turned on, and the process proceeds to step S29. In step S29, it is confirmed whether or not there is a response to LOCKdet (output of the lock instruction unit 31). If YES (no response), the process proceeds to step S30. If NO (response is received), the process proceeds to step S35. move on.

  In step S30, only LOCK2 (second lock switch circuit 31b) is turned on, and the process proceeds to step S31. In step S31, it is checked whether or not there is a response to LOCKdet. If YES (no response), the process proceeds to step S32. If NO (response is present), the process proceeds to step S35.

  In step S32, both LOCK1 and LOCK2 are turned on, and the process proceeds to step S33. In step S33, it is confirmed whether or not there is a response to LOCKdet. If YES (response is received), the process proceeds to step S34. If NO (response is not present), the process proceeds to step S35. In step S34, both UNLOCK1 and UNLOCK2 are turned on for a certain period of time, the vehicle door is unlocked, and then the normal control is performed.

In step S35, after issuing an alarm, the door lock control function is completely stopped, and the vehicle door lock control is terminated. Thus, before the vehicle operation, it confirms the switch circuit 30a in the unlock instruction unit 30 and the lock instructing unit 31, 30b, 31a, the failure 31b, each of these switching circuits 30a, 30b, 31a, all 31b normal If it is functioning, the control shifts to the normal control, and if any failure is confirmed, the control of the vehicle door lock is finished.

- implementation-shaped state of the effect -
Therefore, according to this embodiment shaped condition, the door lock control device S, since switches the door of the vehicle to unlock state when an accident an accident determination section 26 has been predicted or estimated, indeed if an accident occurs Thus, the safety of the vehicle occupant can be improved without hindering quick rescue and escape of the vehicle occupant from the accident vehicle while the door remains locked.

The accident determination section 26, an impact when detecting the operation of the air bag provided in a vehicle, for estimating that the vehicle has an accident, for example, the vehicle is a vehicle such as a collision accident or fall accident between vehicles When the airbag is activated in the event of an accident, the vehicle door can be switched from the locked state to the unlocked state . In addition to its things, it is possible to omit extra wiring can be reduced cost as compared with the case of estimating the accident of the vehicle based on a signal from a dedicated shock sensor.

Further, the accident determination unit 26 predicts that the vehicle will encounter an accident when the sudden deceleration detection unit 36 detects the sudden deceleration of the vehicle. 10 can output an unlock signal to switch the vehicle door from the locked state to the unlocked state. Therefore, for example, when the driver suddenly applies a brake, the door can be switched from the locked state to the unlocked state before the vehicle encounters an accident. Thereby, when the vehicle encounters an accident, for example, even if the battery is damaged or the wiring is disconnected, the door can be unlocked. As a result, the safety of the vehicle occupant can be further improved.

Then, de alloc control device S, after the unlocking instruction unit 30 outputs the unlock signal, the confirmation unit 27 to confirm the determination result of correctness by accident determining section 26, was incorrect determination result by the check unit 27 When the fact is confirmed, the door lock controller 10 is provided with a lock instruction unit 31 that outputs a lock signal. Therefore, when the determination result of the accident determination unit 26 is incorrect, the door lock controller 10 is unlocked. The locked door can be locked again. As a result, the safety of the vehicle occupant can be further enhanced.

The confirmation unit 27 determines whether the determination result by the accident determination unit 26 is correct based on at least one of a change in travel speed and a travel time of the vehicle after the accident is predicted or estimated by the accident determination unit 26. Even if the vehicle is upside down due to an accident and the tires are idle, the vehicle has been coasting after an accident on a sloped road, or the vehicle has been traveling inertially due to a rear-end collision of a subsequent vehicle after stopping due to an accident, etc. Therefore, it is possible to accurately confirm the correctness of the prediction or estimation result.

Furthermore , since the unlock instruction unit 30 includes two unlocking switch circuits 30a and 30b that are connected in parallel to each other and receive the output signals from the accident determination unit 26, at least one of the switch circuits 30a and 30b has failed. If it functions normally without doing so, an unlock signal can be output to the door lock controller 10 even if the other switch circuits 30a, 30b fail. As a result, the unlock instruction section 30 can reliably output an unlock signal to the door lock controller 10 as compared with the case where there is one unlock switch circuit, which can further enhance the safety of the vehicle occupant. it can.

On the other hand, the lock instruction section 31, two lock switch circuit 31a for receiving respective signals from the checking section 27 is connected in series to each other, and have a 31b, two locking switch circuit 31a, both of 31b A lock signal is output to the door lock controller 10 only when it functions normally without failure. In other words, if one switch circuit 31a, 31b fails and does not function, the lock signal is not output to the door lock controller 10 even if the other switch circuit 31a, 31b functions normally. As a result, the lock instructing unit 31 does not erroneously output a lock signal due to a failure of the lock switch circuits 31a and 31b, so that the safety of the vehicle occupant can be further improved.

In addition, the door lock control device S includes a switch confirmation unit 38 for confirming that each switch circuit 30a, 30b, 31a, 31b has not failed before the vehicle starts operation, and at least one switch by the switch confirmation unit 38. Since it has a function stop unit 39 that stops the function of the door lock control when it is confirmed that the circuits 30a, 30b, 31a, 31b are out of order, the vehicle is caused by the failure of the switch circuits 30a, 30b, 31a, 31b. As a result, the safety of the vehicle occupant can be further improved.

Further, the door lock control device S has an unlock alarm unit 37 that issues an alarm when an accident is predicted or estimated by the accident determination unit 26, so that the vehicle occupant can be notified promptly that the door has been switched to the unlocked state. As a result, the safety of the vehicle occupant can be further improved.

Further, according to the control method of the vehicle door lock of this embodiment shaped condition, when the incorrect prediction or estimate of the accident, so switches the door has been switched to the unlock state again locked state, the determination result is incorrect In this case, as a result of being able to lock the door that has been unlocked, the safety of the vehicle occupant can be improved.

  In addition, when detecting the operation of the airbag installed in the vehicle, the vehicle door is switched from the locked state to the unlocked state when the airbag is operated in order to estimate that the vehicle has encountered an accident. As a result, the safety of the vehicle occupant can be improved. In addition, the cost can be reduced and extra wiring can be omitted as compared with a case where a vehicle accident is estimated based on a signal from a dedicated impact sensor.

  Furthermore, in order to check the correctness of the determination result based on at least one of the change in the travel speed of the vehicle and the travel time after the vehicle accident is predicted or estimated, when the vehicle is turned upside down due to the accident, Even if the vehicle travels inertial after an accident on a sloped road, or the vehicle travels inertially due to a rear-end collision of a subsequent vehicle after stopping due to an accident, the accuracy of the prediction or estimation result is accurately I can confirm.

  In addition, when a sudden deceleration of the vehicle is detected, the vehicle is predicted to have an accident and the door is switched from the locked state to the unlocked state. For example, the door is locked when the driver applies a sudden brake. As a result of being able to switch from the state to the unlocked state, the safety of the vehicle occupant can be further improved.

  In addition, since a warning is issued when it is predicted or estimated that the vehicle has suffered an accident, the vehicle occupant can be promptly notified that the door has been switched to the unlocked state. Further improvement can be achieved.

<< Other Embodiments >>
In the above-described type state, the input circuit 21 is set to be connected to an air bag firing signal lines for connecting the air bag and the meter, the present invention is not limited thereto, in place of the air bag firing signal line Alternatively, it may be connected to a dedicated impact sensor provided in the vehicle. In other words, the accident determination unit 26 may estimate that the vehicle has suffered an accident based on the output signal from the dedicated impact sensor.

  In addition, the input circuit 21 may be connected to both the airbag operation signal wiring and the dedicated impact sensor, and the vehicle accident may be estimated based on both of the output signals. In addition, the input circuit 21 may be connected to other wiring that outputs a signal capable of detecting the operation of the airbag instead of the airbag signal wiring, and the accident determination unit 26 uses the output signal as an output signal. It is only necessary that the operation of the air bag can be detected based on the above.

In the above-described type status, unlock instruction unit 30 two unlocking switch circuit 30a, has been to have 30b, the present invention is not limited thereto, unlocking instruction unit 30 are connected in parallel with each other 3 One or more of the unlock switch circuit may have. As a result, even if some of the plurality of unlock switch circuits fail, the unlock signal can be more reliably output from the output circuit 24 to the door lock controller 10.

The lock instruction section 31, two lock switch circuit 31a, has been to have 31b, may have three or more locking switch circuit connected in series with each other. By that, it is possible to further prevent the lock signal is erroneously outputted to the door lock controller 10 from the output circuit 24 due to a failure of the lock switch circuit.

In the above-described type condition, a stop of the vehicle when the confirmation unit 27 confirms the correctness of the determination result, the ignition switch the vehicle in the on state has a means stopping, the present invention is not limited thereto, Stopping the vehicle may also mean that the vehicle stops with the ignition switch turned off.

As described above, the present invention is useful with the door lock control equipment for a vehicle, in particular, even when an accident of the vehicle is predicted or estimated incorrectly, if to increase the safety of the vehicle occupant Suitable for

It is a diagram showing a configuration of a vehicle door lock control device of the embodiment shaped state. It is a block diagram showing a configuration of a CPU and an output portion of the exemplary shaped state. It is a figure which shows the structure of an unlock instruction | indication part and a lock instruction | indication part. It is a figure which shows the flowchart of the procedure of the control method of a vehicle door lock. It is a figure which shows the flowchart of the procedure of the failure confirmation of the some switch circuit in an output circuit. It is a figure which shows the timing chart with which it uses for the procedure of a failure check of the some switch circuit in an output circuit.

10 Door lock controller (lock switching part)
26 Accident determination unit 27 Confirmation unit 30 Unlock instruction unit 31 Lock instruction unit 36 Rapid deceleration detection unit 37 Unlock alarm unit 30a First unlock switch circuit (switch circuit)
30b Second unlock switch circuit (switch circuit)
31a First lock switch circuit (switch circuit)
31b Second lock switch circuit (switch circuit)
38 Switch confirmation part 39 Function stop part

Claims (6)

A lock switching unit that switches a vehicle door to a locked state or an unlocked state;
An accident determination unit for predicting or estimating an accident of the vehicle;
A plurality of unlocking switch circuit for receiving respective signals from connected said accident determination section in parallel with one another, in the case of an accident by the accident determination section is predicted or estimated, at least one of the unlock switch An unlock instruction unit that outputs an unlock signal that causes the lock switching unit to switch the locked door to an unlocked state when the circuit is functioning normally ;
After the unlock instruction unit outputs the unlock signal, a confirmation unit for confirming the correctness of the prediction or estimation result by the accident determination unit,
It is connected in series with a plurality of locking switch circuit for receiving respective signals from the confirmation unit, in a case where it was incorrectly result of the prediction or estimate is confirmed by the confirming unit, all of the above A lock instruction unit that outputs a lock signal for switching the unlocked door to a locked state when the lock switch circuit is functioning normally ;
Before starting the operation of the vehicle, a switch confirmation unit for confirming that each unlocking switch circuit and each locking switch circuit are not broken,
A function stop unit that stops the function of the door lock control when it is confirmed by the switch check unit that at least one of the unlocking switch circuit or the locking switch circuit has failed. A vehicle door lock control device. The vehicle door lock control device according to claim 1,
A sudden deceleration detecting unit for detecting sudden deceleration of the vehicle;
The vehicle door lock control device according to claim 1, wherein the accident determination unit predicts that the vehicle will encounter an accident when the sudden deceleration detection unit detects the sudden deceleration of the vehicle. In the vehicle door lock control device according to claim 1 or 2,
A vehicle door lock control device comprising an unlock warning unit that issues a warning when an accident is predicted or estimated by the accident determination unit. In the vehicle door lock control device according to any one of claims 1 to 3 ,
The switch confirming unit confirms that each unlocking switch circuit and each locking switch circuit are not out of order when the ignition switch of the vehicle is turned on. Door lock control device. The vehicle door lock control device according to any one of claims 1 to 4 ,
The vehicle door lock control device characterized in that the accident determination unit estimates that the vehicle has encountered an accident when detecting the operation of an airbag provided in the vehicle. The vehicle door lock control device according to any one of claims 1 to 5 ,
The vehicle door characterized in that the confirmation unit confirms whether the result of the prediction or estimation by the accident determination unit is correct based on the running state of the vehicle after the accident is predicted or estimated by the accident determination unit. Lock control device.

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