JP2017178160A - Vehicular parking and stopping control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular parking and stopping control system in which migration to parking maintenance control is prevented by determining that a driver is not present although the driver is present, during stopping maintenance control operation.SOLUTION: A vehicular parking and stopping control system 10 includes: stopping maintenance means 30; parking maintenance means 32 which continues to apply braking to a vehicle until parking operation is released even when advancing operation is actuated, when a prescribed parking operation has been executed; driver presence determination means 13 which determines whether a driver of a vehicle is present; and a controller 28 which controls the parking maintenance means 32 to operate, when determined that a driver is absent by the driver presence determination means 13, during operation of the stopping maintenance means 30. In the vehicular parking and stopping control system, the driver presence determination means 13 includes a plurality of different determination criteria, and executes determination of absence for all the determination criteria when determined that a driver is absent, and the controller 28 controls a vehicle to be in a parking operation state when determined that a driver is absent by the driver presence determination means 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a parking / stopping control system, and more particularly to a parking / stopping control system that controls parking maintenance of a vehicle that is in a stop-maintenance control that operates when the vehicle temporarily stops.

  When a vehicle such as an automobile is temporarily stopped by a driver's brake operation, stop maintenance control (AVH: Auto Vehicle Hold) that automatically performs temporary stop maintenance by brake fluid pressure is activated (for example, Patent Document 1). reference). This stop maintenance control is canceled by the driver's advance operation, for example, an accelerator operation for moving the vehicle forward or backward, or a gear operation (for example, putting the gear into the D range). As a result, the driver can smoothly advance the vehicle while avoiding danger due to unexpected movement of the vehicle.

  On the other hand, in the parking maintenance control, since the vehicle is parked for a long time, the vehicle is put in a state where the vehicle rear wheel is braked by, for example, EPB (electric parking brake) (see, for example, Patent Document 2). It is intended to maintain a stop. In this state, the parking maintenance control is not canceled even if the driver performs a forward operation, and a separate operation is required to cancel the parking maintenance control.

  If the driver leaves the vehicle during the vehicle stop maintenance control described above, the vehicle is in a dangerous state, so the ECU (electronic control unit: control unit) controls the parking maintenance control to operate. .

  FIG. 4 is a flowchart showing the control logic until the parking maintenance control is activated after the stop maintenance control is activated. As described above, when the vehicle stops temporarily, the stop maintenance control is activated (step S31). While this stop maintenance control is operating, it is first determined whether or not there is a driver's progress operation (step S32). This determination is made based on the presence / absence of the driver's progress operation, for example, whether the driver has operated the accelerator, or whether the driver has operated a gear, for example, whether the gear is in the D range. When the driver operates the accelerator or when the gear is operated, the stop maintenance control that has been operated so far is canceled (step S33), and the control flow is ended.

  When there is no driver's advance operation, the presence determination of the driver is performed based on one reference (step S34). One criterion is, for example, whether or not the driver is wearing a seat belt. If the seat belt is not worn, it is determined that “the driver is not present”. If it is determined that "the driver is present", the process returns to step S32, and it is continuously determined whether or not the driver has performed an advance operation.

  If it is determined in step S34 that "the driver is not present", the control unit activates the parking maintenance control and performs the parking operation of the vehicle for the safety of the vehicle (step S35), finish. This parking maintenance control is performed by, for example, EPB (electric parking brake), and the vehicle continues to brake the vehicle unless an operation for releasing the parking maintenance control is performed.

  As described above, if it is determined that “the driver is not present” during the stop maintenance control, it is considered dangerous to continue the stop maintenance control as it is, and the electric parking brake is a safety function. It is the logic that control is transferred to parking maintenance by.

Japanese Patent No. 5263413 JP 2005-247194 A

  As shown in the control flow described above, in the state where the stop maintenance control is activated, if it is determined by the driver presence determination that “the driver is not present”, the parking maintenance control by the EPB or the like is immediately performed. Is called.

  However, if the driver releases the seat belt to change the driving posture in order to repark the vehicle at the correct position during the stop maintenance control, the driver may shift to the parking maintenance control unintentionally. It becomes. Therefore, even if the driver performs an operation for advancing the vehicle, the vehicle does not start immediately, and the driver may be confused by an unintended parking maintenance control and suddenly perform a different operation. Then, the driver needs to recognize this state and further perform an operation for canceling the parking maintenance control.

  The present invention has been made in view of the above-mentioned problems, and its purpose is to shift to parking maintenance control when it is determined that the driver is present even if the driver is present during the stop maintenance control operation. An object of the present invention is to provide a parking and stopping control system that prevents this from happening.

In order to achieve the above object, the parking and stopping control system according to claim 1 is a state in which the vehicle is stopped even when the predetermined stop operation is released in a situation where the vehicle is temporarily stopped by continuing the predetermined stop operation. And the stop operation means for releasing the maintenance of the stop state when the advance operation for advancing the vehicle is performed, and the parking operation even if the advance operation is performed when a predetermined parking operation is performed Parking maintenance means that continues to brake the vehicle until the vehicle is released, driver presence determination means that determines the presence of the driver of the vehicle, and driver presence while the stop maintenance means is in operation In a parking and stopping control system having a control unit that controls the parking maintenance unit to operate when the determination unit determines that the driver is absent,
The driver presence determination means has a plurality of different determination criteria, and determines that the driver is absent when it is determined that the driver is absent based on all the determination criteria, and the control unit determines the presence of the driver. When the absence determination is made by means, the vehicle is put in a state where the parking operation is performed.

  With this configuration, the driver presence determination is performed according to a plurality of different determination criteria during the stop maintenance control, and when it is determined that “the driver is not present” according to all the determination criteria, It is determined that “the driver is not present” and the parking operation is automatically controlled. Therefore, since the presence / absence of the driver is more reliably determined, it is effectively prevented that the vehicle is shifted to the parking state even though the driver is present. As a result, it is possible to reliably prevent the driver from unexpectedly shifting to the parking maintenance control.

The parking and stopping control system according to claim 2 is:
The parking / stop control system according to claim 1, wherein the driver presence determination unit performs the determination based on two determination criteria, and the first determination criterion is whether the driver is wearing a seat belt. The second determination criterion is whether or not the driver has operated the brake, and the absence determination is performed when the seat belt is not attached and the brake operation is not performed. To do.

With this configuration, the second determination is based on whether or not the driver has performed a brake operation. This is because when the driver is present in the situation where the second determination is made, it is predicted with high probability that the driver is stepping on the brake pedal and applying the brake.

  Therefore, even if the driver is seated in the first determination and the seatbelt is released and it is determined that “the driver is not present”, the second determination can ensure driving. It is possible to determine the presence of a person. As a result, the accuracy of the driver presence determination is improved even with only two determination criteria, and it is possible to reliably prevent the driver from suddenly shifting to the parking maintenance control. .

  According to the parking and stopping control system of the present invention, it is performed based on a plurality of different criteria until the parking maintenance control is activated during the stop maintenance control, and it is reliably prevented that the driver unexpectedly shifts to the parking maintenance control. The

It is a schematic block diagram of the parking and stopping control system of this invention. It is a flowchart of parking and stopping control in the parking and stopping control system of the present invention. The driver presence determination criteria in the parking and stopping control system of the present invention and the state of the driver or vehicle after the determination are shown. It is a flowchart of parking and stopping control in the conventional parking and stopping control system.

  Hereinafter, embodiments of a parking and stopping control system of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a parking and stopping control system of the present invention. The parking and stopping control system 10 has various determination means controlled by an ECU (electronic control unit: control unit) 28. The vehicle stop determination means 11 has a vehicle speed detection sensor 12 that detects the speed of the vehicle. The vehicle speed detection sensor 12 determines that the vehicle has stopped when the vehicle speed is zero.

  The driver presence determination means 13 includes a seat belt wearing detection sensor 14 that detects whether or not the driver is wearing a seat belt, and a door opening and closing detection that detects whether or not the door on the driver side of the vehicle has been opened and closed. The sensor 16 includes a driver seating detection sensor 18 that detects whether or not the driver is seated on the seat, and a brake operation detection sensor 20 that detects whether or not the driver has operated the brake. Since each of these sensors is not of a special configuration, it can be easily constructed without complicating the system.

  In the present embodiment, each of the above sensors is used, and the first determination criterion is based on whether the driver is wearing a seat belt, whether the driver has operated the brake, and whether the driver has operated the brake. It is said.

  The driver advancing operation determination means 21 includes an accelerator operation detection sensor 22 that detects whether or not the driver has stepped on the accelerator, and a gear position detection sensor 24 that detects the position of the gear. When the position of the gear is in the D range or the R range and the driver steps on the accelerator, the driver progress operation determination unit 21 determines that the driver has performed a progress operation.

  The stop maintaining means 30 temporarily stops the vehicle by stepping on the brake, and when the vehicle stop determining means 11 determines that the vehicle has stopped, even if the driver lifts his foot from the brake pedal. Then, control for stopping the vehicle is performed. In this stop maintenance control, the vehicle is temporarily stopped by increasing the brake fluid pressure from the master cylinder, and the driver performs a forward operation, that is, the gear position is in the D range or R range. And when the driver steps on the accelerator, it is configured to be released.

  In order to keep the vehicle parked for a long time, the parking maintaining means 32 puts the vehicle in a state in which the vehicle rear wheels are braked by, for example, EPB (electric parking brake). In this state, the parking maintenance control is not canceled regardless of the brake operation and the accelerator operation, and an operation for canceling the parking maintenance control 32 is separately required to cancel the parking maintenance control. In the present embodiment, the parking maintenance control 32 is released by turning on the parking brake release switch 27. In addition to being operated by a control signal from the ECU 28, the parking maintaining means 32 can also control the parking of the vehicle by turning on the parking brake switch 26.

  FIG. 2 is a flowchart showing a control logic until the parking maintenance control is activated while the parking maintenance control is in operation, according to the parking and stopping control system of the present invention. When the driver performs a brake operation and the vehicle temporarily stops, stop maintenance control is activated (step S1). While this stop maintenance control is operating, it is determined whether or not there is a driver's advance operation (step S2). This determination is made based on the presence or absence of the driver's advance operation, for example, whether the gear position is in the D range or R range and the driver steps on the accelerator. When the position of the gear is in the D range or the R range and the driver steps on the accelerator, the stop maintenance control that has been operated so far is canceled (step S3), and the control flow ends.

  When there is no driver's progress operation, a driver's presence determination is performed (step S14). This presence determination is performed based on the first determination criterion. That is, the seat belt wearing detection sensor 14 determines whether or not the driver is wearing the seat bell. When the driver removes the seat belt, it is determined that “the driver is not present”.

  In addition to the seat belt wearing state, when the door opening / closing detection sensor 16 opens or closes the driver side door, or when the driver seating sensor 18 detects that the driver is not seated, It may be determined that “the driver is not present”. If it is determined that “the driver is present”, the process returns to step S2, and it is subsequently determined whether or not the driver has performed a forward operation.

  Returning to step S4, if it is determined that “the driver is not present”, the driver presence determination based on the second determination criterion is performed (step S5). This determination is made by a brake operation detection sensor 20 that detects whether or not the driver has operated the brake. When the driver operates the brake, it is determined that “the driver is present”, the process returns to step S12, and it is determined whether or not the driver continues to perform the operation.

  In the driver presence determination in step S5, when it is determined that the brake operation is not performed and “the driver is not present”, the parking maintenance control is activated to enter the parking operation state (step S6), and the control flow is changed. finish.

  In the driver presence determination means in step S5, the determination is made based on whether or not the driver has operated the brake. In step S4, the driver is determined to be “no driver is present”. This is because it is assumed with high probability that the driver is stepping on the brake pedal to apply the brake. Therefore, in the driver presence determination in step S5, it can be more reliably determined whether or not the driver is present.

  Therefore, even if it is determined by the control flow described above that the driver releases the seat belt in order to change the driving posture toward parking in the determination of driver presence in step 4 and “the driver is not present”. By performing the driver presence determination based on the second determination criterion, it is reliably prevented that the driver unexpectedly shifts to the parking maintenance control. Therefore, the driver is not required to perform an operation to cancel the parking maintenance control in order to start the vehicle during the stop maintenance control.

  FIG. 3 shows, for example, examples of the respective determination results and the state of the driver or the state of the vehicle when there are four determination criteria. In addition to the above-described first determination criterion (presence / absence of seat belt wearing signal) and second determination criterion (presence / absence of brake operation signal), third determination criterion (presence / absence of door opening / closing signal), fourth determination A driver's presence determination is made using a reference (presence / absence of a seating signal). In this case, the vehicle is not parked unless it is determined that “the driver is not present” in all the determination criteria.

  According to the parking and stopping control system of the present embodiment, the presence determination of the driver is performed based on a plurality of different criteria. By determining that the person is not present, the parking maintenance control is prevented from being unexpectedly activated by the driver.

  In addition, this invention is not limited to the range shown in said embodiment, A various change is possible within the range of the summary of invention. For example, the ECU 28 is configured to receive signals from the vehicle stop determination unit 11, the driver presence determination unit 13, and the driver advance operation determination unit 21, and operate the stop maintenance unit 30 and the parking maintenance unit 32. However, other means such as an engine speed detecting means, an engine torque detecting sensor, etc. may be connected.

  In the embodiment, the first determination criterion is whether or not the seat belt is worn, and the second determination criterion is whether or not the driver brakes, but other determination criteria, for example, the driver side Various criteria can be used, such as whether the door has been opened or closed.

DESCRIPTION OF SYMBOLS 10 Parking stop control system 11 Vehicle stop determination means 13 Driver presence determination means 21 Driver advance operation determination means 26 Parking brake switch 27 Parking brake release switch 28 ECU (electronic control unit)
30 Stop maintenance means 32 Parking maintenance means

Claims (2)

In a situation where the vehicle is temporarily stopped by continuing a predetermined stop operation, the vehicle is kept stopped even when the predetermined stop operation is released, and the stop is performed when an advance operation is performed to advance the vehicle. Stop maintenance means for releasing the maintenance of the state;
When a predetermined parking operation is performed, parking maintaining means that continues to brake the vehicle until the parking operation is canceled even if the advance operation is performed,
Driver presence determination means for determining presence of a driver of the vehicle;
A parking / stop control system comprising: a control unit that controls the parking maintenance means to operate when the driver presence determination means determines that the driver is absent while the stop maintenance means is in operation. ,
The driver presence determination means has a plurality of different determination criteria, and determines the absence when the driver is absent based on all the determination criteria.
The controller is
A parking and stopping control system, wherein the parking operation is performed on the vehicle when the absence determination is made by the driver presence determination means. The driver presence determination means performs the determination based on two determination criteria,
The first criterion is whether or not the driver is wearing a seat belt, and the second criterion is whether or not the driver has operated the brake,
The parking / stop control system according to claim 1, wherein the absence determination is performed when the seat belt is not attached and the brake operation is not performed.

Images