JP2017087771A - Vehicular travel control apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable, for example, discontinuation of tracking-control that causes a vehicle itself to travel tracking a preceding vehicle traveling ahead of the vehicle itself, when a collision occurs.SOLUTION: When there is an input of a signal for expanding an airbag from an airbag device 12 as a result of shock detection means 11 detecting a shock during a travel of a vehicle by travel control means 1, an ending process for continuing the operation of the travel control means 1 for a certain period of time or an ending process for decelerating the vehicle is executed, and then the operation of the travel control means 1 is stopped.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicular travel control device for driving a vehicle according to a set situation.

  As a vehicular travel control device that travels a vehicle according to a set situation, for example, the vehicle travels following a preceding vehicle while maintaining a predetermined inter-vehicle distance, or an object present in the traveling direction is detected. An active cruise control device that automatically decelerates (stops) a vehicle is known (for example, Patent Document 1). Further, as a vehicle travel control device, for example, a cruise control device that travels a vehicle while maintaining the vehicle travel speed at a speed set by a driver is known.

  While the vehicle is running, there is an unavoidable risk of encountering a collision such as a rear collision or a side collision. In the event of a collision, the active cruise control device or a cruise control device for a vehicle in the cruise control device may be used. It is done. When a collision occurs while traveling by the travel control device, there is a concern that the vehicle may continue traveling in an unintended state. Further, the impact of the collision may cause an abnormality in the operation of the active cruise control device or the cruise control device, that is, the follow-up control that causes the vehicle to travel following the preceding vehicle traveling in front of the vehicle.

  A conventionally proposed technology for a vehicle travel device, for example, the technology disclosed in Patent Document 1, is a technology for performing driving that does not give the driver a sense of incongruity according to the driving conditions. In other words, the technology for improving the ride comfort of the driver has been the mainstream in the conventionally proposed technology for the vehicle travel control device. For this reason, the present condition is that the technique of the countermeasure in the state which is drive | working with the active cruise control apparatus or the cruise control apparatus at the time of a vehicle colliding or when a vehicle collides is not established.

JP2015-143491A

  The present invention has been made in view of the above situation, and provides a vehicle travel control device that does not continue tracking control in which, for example, a preceding vehicle traveling in front of the host vehicle follows the host vehicle and travels in the event of a collision. With the goal.

  In order to achieve the above object, a vehicular travel control apparatus according to a first aspect of the present invention includes a travel control means that causes a preceding vehicle traveling in front of the host vehicle to travel by following the host vehicle, and the host vehicle. An impact detection means for detecting an applied impact, and a stop for stopping the operation of the travel control means when an impact of a predetermined value or more is detected by the impact detection means during traveling of the host vehicle by the travel control means Means.

  In the present invention according to claim 1, an impact greater than or equal to a predetermined value is detected by the impact detection means while the vehicle is traveling by the travel control means for causing the preceding vehicle traveling ahead of the own vehicle to travel following the own vehicle. When it is done, the operation of the above-described travel control means is stopped by the stop means. For this reason, when an impact is detected at the time of a collision, the operation of the active cruise control device or the cruise control device, i.e., the follow-up control in which the vehicle follows the preceding vehicle traveling in front of the host vehicle is not continued. It becomes possible. As a result, after a large impact is applied to the host vehicle, for example, the problem of trying to follow another vehicle against the driver's will is avoided.

  Incidentally, in Japanese Patent No. 4952321, in a traveling control device that detects an object in the traveling direction and automatically decelerates the vehicle, the impact when the vehicle collides with an object is detected, and deceleration control is performed according to the magnitude of the impact. A technique for releasing is disclosed. This technique is similar to the present invention according to claim 1 in that the control is released by detecting an impact, but the release control is a deceleration control that stops the vehicle when it collides with an object.

  In other words, the technology disclosed in Japanese Patent No. 4925321 discloses that when the vehicle collides with an object (paper, cloth, etc.) that can be collided, the deceleration control is canceled and the vehicle continues to travel. This is a technique for preventing the vehicle from decelerating against the intention. For this reason, the technology of the present invention according to claim 1 is a technology for performing reverse control in terms of continuation of traveling, and the technical idea is different.

  A vehicle travel control apparatus according to a second aspect of the present invention is the vehicle travel control apparatus according to the first aspect, wherein the airbag is deployed when an impact is detected by the impact detection means. Provided with a device, wherein the stopping means stops the operation of the traveling control means when an operation signal of the airbag device is inputted.

  In the present invention according to claim 2, when the operation signal of the airbag apparatus is input, the operation of the travel control means is stopped by the stop means. Thereby, in a state where the driver (occupant) visually recognizes the deployment of the airbag, the operation of the travel control unit of the vehicle is stopped, and the driver (occupant) can easily suppress a sense of discomfort with respect to the stop of the operation of the travel control unit. Become.

  According to a third aspect of the present invention, there is provided the vehicular travel control apparatus according to the first or second aspect of the present invention, wherein the stop means stops the operation of the travel control means. The decelerating traveling of the own vehicle is continued for a predetermined time.

  In the present invention according to claim 3, the operation of the travel control means can be stopped after executing a predetermined end process for continuing the deceleration travel of the host vehicle for a predetermined time. For example, when the vehicle is traveling at a reduced speed, the control can be continued as it is.

  As the predetermined end process, when the vehicle is controlled to travel at a reduced speed, for example, a process for continuing the reduced speed travel for a predetermined time or a process for performing a braking operation can be applied. In addition, when the vehicle is controlled to maintain a predetermined vehicle speed, or when the vehicle is controlled to accelerate, for example, a process of executing a travel for decelerating the vehicle speed for a predetermined time. Alternatively, a process for performing a braking operation can be applied.

  According to a fourth aspect of the present invention, there is provided a vehicular travel control apparatus according to the first aspect of the present invention, wherein the vehicular travel control apparatus includes a driver state detecting means for detecting a state of the driver of the vehicle, and the stop The means is characterized in that the operation of the travel control means is stopped when the driver state detection means detects that the driver is unable to drive.

  In the present invention according to claim 4, when it is detected that the driver is unable to drive, the operation of the travel control means is stopped by the stop means. Thereby, when the driver becomes unable to drive, the operation of the traveling control means stops. A sensor that measures the heart rate of the driver or a sensor that detects blinks is applied as the driving stop means, and the driver state detection means detects that driving is impossible based on the heart rate or blink state. be able to.

  In the vehicle travel control device of the present invention, at the time of a collision, for example, it is possible not to continue the follow-up control in which the vehicle travels by following the preceding vehicle traveling in front of the vehicle.

1 is a block configuration diagram of a vehicle travel control apparatus according to an embodiment of the present invention. It is an operation | movement flowchart of the traveling control apparatus for vehicles which concerns on one Example of this invention. It is an operation | movement flowchart of the traveling control apparatus for vehicles which concerns on the other Example of this invention.

  FIG. 1 shows a block configuration of a vehicular travel control apparatus according to an embodiment of the present invention, and FIG. 2 shows an operation flowchart of the vehicular travel control apparatus according to an embodiment of the present invention.

  The vehicle travel control device of this embodiment travels the vehicle following the preceding vehicle while maintaining a predetermined inter-vehicle distance, or automatically decelerates (stops) the vehicle by detecting an object present in the traveling direction. ) Or an active cruise control device. As the vehicle travel control device, a cruise control device that travels the vehicle while maintaining the travel speed of the vehicle at the speed set by the driver can be applied.

  As shown in FIG. 1, a travel control means 1 is provided as an active cruise control device. The travel control means 1 controls the operation of the brake and the output of the engine so as to follow the preceding vehicle while maintaining a predetermined inter-vehicle distance, that is, the vehicle travels according to the set situation. It is a means. The travel control means 1 controls the operation of the brake and the output of the engine according to a command from the control means 2 which is a control means.

  The control means 2 includes a vehicle speed sensor 3 for detecting the speed of the host vehicle, a camera 4 for photographing the preceding vehicle, an inter-vehicle distance detecting means 5 for detecting the inter-vehicle distance from the preceding vehicle, and a setting switch 6 for setting the inter-vehicle distance and the like. Is entered. In the control means 2, the brake and engine outputs are set based on information from the vehicle speed sensor 3, the camera 4, the inter-vehicle distance detection means 5, and the setting switch 6. Then, the operation of the brake and the output of the engine are controlled by a command from the control means 2.

  On the other hand, the control means 2 receives information of the impact detection means 11 that detects an impact applied to the vehicle. The impact detection means 11 is a sensor that detects acceleration in the forward direction of the vehicle and acceleration in the lateral direction of the vehicle. Based on information from the impact detection means 11, a vehicle collision (rear impact, side impact) is detected. The The control means 2 travels when the impact detection means 11 detects an impact of a predetermined level or more, that is, when a vehicle collision (rear impact, side impact) is detected while the travel control means 1 is traveling. The operation of the control means 1 can be stopped (stop means).

  When an impact of a predetermined value or more is detected by the impact detection means 11 while the vehicle is traveling by the travel control means 1, the operation of the travel control means 1 can be stopped by the stop means. Sometimes, when an impact is detected, the operation of the active cruise control device (cruise control device), for example, it is not possible to continue the follow-up control for causing the vehicle to follow the vehicle traveling ahead of the vehicle. .

  The vehicle is provided with an air bag device 12, and the control means 2 is configured such that when an impact greater than a predetermined value is detected by the impact detection means 11, that is, when a vehicle collision (rear impact, side impact) is detected, An ignition signal is output to the inflator of the airbag device 12 to deploy the airbag. The airbag deployment signal is input to the control means 2, and when the airbag deployment signal is input during traveling of the vehicle by the travel control means 1, the stop means stops the operation of the travel control means 1. It has become.

  For this reason, in a state where the driver (occupant) visually recognizes the deployment of the airbag, the operation of the travel control unit 1 of the vehicle is stopped, and the driver (occupant) is prevented from feeling uncomfortable with the stop of the operation of the travel control unit 1. It becomes easy.

  The stop means of the control means 2 executes a predetermined end process when stopping the operation of the travel control means 1. For example, when the vehicle is controlled to travel at a reduced speed, a process for continuing the deceleration travel for a predetermined time or a process for performing a braking operation is executed.

  In addition, when the vehicle is controlled to maintain a predetermined vehicle speed, or when the vehicle is controlled to accelerate, for example, a process of executing a travel for decelerating the vehicle speed for a predetermined time. Or the process which implements braking operation is performed.

  Furthermore, when the operation of the traveling control unit 1 has not been started, a process for prohibiting the operation of the traveling control unit 1 is executed. Further, as the end process, when the operation of the travel control unit 1 is a decelerating travel, a process of continuing the operation of the travel control unit 1 for a certain time can be executed.

The processing flow in the control means 2 will be specifically described with reference to FIG.
As shown in the figure, when the process starts, it is determined in step S1 whether or not the traveling control by the traveling control means 1 is in progress. If it is determined in step S1 that the traveling control is being performed, the impact detection means 11 is determined in step S2. Thus, it is determined whether or not an impact exceeding a predetermined value is detected. That is, it is determined whether or not a vehicle collision (rear collision, side collision) has been detected. If it is determined in step S1 that traveling control is not being performed, or if it is determined in step S2 that no impact has been detected, the process returns and the process ends.

  If it is determined in step S2 that an impact of a predetermined value or more has been detected, an ignition signal is sent to the inflator of the airbag device in step S3, and the airbag is deployed. When the airbag is deployed, an airbag deployment signal is input in step S4. After the airbag deployment signal is input in step S4, it is determined in step S5 whether or not the traveling control by the traveling control means 1 is a deceleration control that decelerates the vehicle.

  If it is determined in step S5 that the vehicle is decelerating, the current process (decelerated traveling process) is continued for a predetermined time in step S6, and the control by the traveling control means 1 is stopped in step S7, and the process returns. That is, when the operation of the traveling control unit 1 is a decelerating traveling, a process (end process) for continuing the operation of the traveling control unit 1 for a predetermined time is executed.

  If it is determined in step S5 that the vehicle is not decelerating, that is, if it is determined that the current vehicle speed is maintained or the vehicle is accelerating, deceleration processing is executed for a predetermined time in step S8 ( An end process is executed), the process proceeds to step S7, the control by the traveling control means 1 is stopped, and the process returns.

  After determining whether or not the vehicle is decelerating in step S5, it is possible to proceed to step S7 and stop the control by the traveling control means 1 without executing the end processing of step S6 and step S8. If it is determined in step S2 that an impact has been detected, it is also possible to proceed directly to step S7 and stop the control by the traveling control means 1.

  When the vehicle control apparatus 1 detects an impact exceeding a predetermined value and detects a collision while the vehicle is traveling by the travel control unit 1, the vehicle control device performs the travel control when an airbag deployment signal is input. The operation of the means 1 is stopped. Then, when stopping the operation of the travel control unit 1, an end process for continuing the operation of the travel control unit 1 for a certain period of time or an end process for decelerating the vehicle is executed.

  For this reason, when an impact is detected at the time of a vehicle collision, the operation of the active cruise control device (cruise control device), for example, the follow-up control for causing the vehicle to follow the preceding vehicle running in front of the vehicle is continued. This makes it possible to prevent unintended behavior of the vehicle at the time of a collision. And the stop of operation | movement of the traveling control means 1 can be recognized in the state which the driver | operator (occupant) visually recognized expansion | deployment of an airbag, and suppression of a driver | operator (occupant) uncomfortable feeling becomes easy.

Based on FIG. 3, the flow of the process of the other Example in the control means 2 is demonstrated concretely.
As shown in the figure, when the process starts, it is determined in step S11 whether or not traveling control by the traveling control unit 1 is in progress. If it is determined in step S11 that traveling control is being performed, the impact detection unit 11 is determined in step S12. Thus, it is determined whether or not an impact exceeding a predetermined value is detected. That is, it is determined whether or not a vehicle collision (rear collision, side collision) has been detected. If it is determined in step S11 that traveling control is not being performed, or if it is determined in step S12 that an impact greater than a predetermined value has not been detected, the process returns and the process ends.

  If it is determined in step S12 that an impact of a predetermined value or more has been detected, an ignition signal is sent to the inflator of the airbag device in step S13, and the airbag is deployed. When the airbag is deployed, an airbag deployment signal is input in step S14.

  After the airbag deployment signal is input in step S14, it is determined in step S15 whether or not the driver is unable to drive by the driver state detection means. As the driver state detection means, a sensor that measures the heart rate of the driver, a sensor that detects blinks, or the like can be applied. And it can detect that it cannot drive based on the heart rate and the state of blink as a driving stop means.

  If it is determined in step S15 that the driver is unable to drive, the process proceeds to step S16 to stop the control by the traveling control means 1 and return. In addition, it is also possible to perform a predetermined end process (step S5, step S6, step S8 in FIG. 2) after the determination of the inoperability in step S15.

  In the above-described embodiment, when it is detected that the driver cannot drive during a collision, the operation of the travel control unit 1 can be stopped by the stop unit, and unintended behavior of the vehicle at the time of the collision can be prevented. .

  In the vehicle travel control apparatus of the present invention described above, the operation of the travel control means 1 is stopped by the stop means at the time of a collision, so that the operation of the active cruise control apparatus or the cruise control apparatus, for example, the preceding traveling ahead of the host vehicle is performed. It becomes possible not to continue the follow-up control in which the vehicle travels while following the vehicle. For this reason, the continuation of the operation of the active cruise control device or the cruise control device can prevent the vehicle from becoming unintended behavior at the time of collision.

  INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of a vehicle travel control device for traveling a vehicle according to a set situation.

DESCRIPTION OF SYMBOLS 1 Travel control means 2 Control means 3 Vehicle speed sensor 4 Camera 5 Inter-vehicle distance detection means 6 Setting switch 11 Impact detection means 12 Airbag apparatus

Claims (4)

Travel control means for causing the vehicle to travel following a preceding vehicle traveling in front of the vehicle;
An impact detecting means for detecting an impact applied to the vehicle;
And a stop unit that stops the operation of the travel control unit when an impact of a predetermined value or more is detected by the impact detection unit while the host vehicle is traveling by the travel control unit. Travel control device. The vehicle travel control apparatus according to claim 1,
An airbag device that deploys an airbag when an impact is detected by the impact detection means;
The stopping means is
The vehicle travel control device, wherein when the operation signal of the airbag device is input, the operation of the travel control means is stopped. In the vehicle travel control device according to claim 1 or 2,
The stopping means is
When the operation of the traveling control means is stopped, the vehicle traveling control device continues the deceleration traveling of the host vehicle for a predetermined time. The vehicle travel control apparatus according to claim 1,
Comprising a driver state detecting means for detecting a state of the driver of the vehicle;
The stopping means is
The vehicle travel control device, wherein when the driver state detection means detects that the driver is unable to drive, the operation of the travel control means is stopped.

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