JP2013226930A - Reversing accident prevention control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reversing accident prevention control device for reducing automobile accidents occurring in reversing the automobile, based on hastiness of a driver.SOLUTION: A reversing accident prevention control device 10 controls a vehicle such that a vehicle speed does not increase, based on a psychological state of a driver when reversing the vehicle, and includes a busyness degree determining and calculating unit 12 for calculating a busyness degree in operation control based on a vehicle signal 11 and determining whether the busyness degree is higher than a predetermined threshold; and an accident prevention control unit 15 for changing, when the busyness degree is determined to be higher than the predetermined threshold by the busyness degree determining and calculating unit 12 in reversing the vehicle, a proportional curve between an accelerator opening and an engine throttle valve opening so as to reduce the engine throttle valve opening with respect to the accelerator opening.

Description

  The present invention relates to a reverse accident prevention control apparatus for preventing an automobile accident that occurs during reverse.

  According to the traffic accident analysis, the most important human factor in car accidents when reversing is a safety unconfirmed that “safety confirmation was insufficient” or “safety confirmation was not performed”. It is said that more than 90% of human factors.

  As other human factors, although improper operation such as “weak braking, slow delay” or “gear misplacement” follows, the ratio is small compared to unconfirmed safety.

  Therefore, in order to prevent a car accident that occurs when reversing, it is essential to take measures to prevent unconfirmed safety.

  As a conventional measure, there is generally a means for notifying the driver that the vehicle is in the reverse mode, and there is a method of presenting an image in order to reduce the blind spot (for example, see Patent Document 1). The current situation is that no specific countermeasures have been taken against uncertainties of safety that may occur in an impatient state.

Japanese Patent Laid-Open No. 5-139210

  Many drivers try to drive more carefully when reversing, so it seems that the majority of the cases are not so fast, but in situations where there is no room in mind due to impatience, etc. There is a concern that a situation in which appropriate attention is not paid tends to be induced, and in some cases, an accident may be caused, such as contact with an obstacle that was not noticed.

  In the worst case, the infant or child who is present in the blind spot at the rear of the vehicle may not be able to get back because he / she has not noticed.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a reverse accident prevention control device for reducing the number of automobile accidents that occur when reversing after paying attention to the driver's impatience.

  The present invention devised to achieve this object is a reverse accident prevention control device for controlling a vehicle so that the vehicle speed does not increase in accordance with the driver's psychological state at the time of reverse, and is driven based on a vehicle signal. A busyness determination calculation unit that calculates the busyness of the operation and determines whether the busyness is greater than or equal to a preset threshold, and the busyness is greater than or equal to a preset threshold by the busyness determination calculation unit when reversing A reverse accident prevention control device comprising: an accident prevention control unit that changes a proportional curve between the accelerator opening and the engine throttle valve opening when it is determined to be present, and reduces the engine throttle valve opening relative to the accelerator opening. is there.

  Further, the present invention is a reverse accident prevention control device for controlling a vehicle so that the vehicle speed does not increase according to the psychological state of the driver during reverse, and calculates the driver's degree of impatience based on a biological signal. When the degree of impotence is determined to be greater than or equal to a preset threshold, and when the degree of impotence is determined to be greater than or equal to a preset threshold by the degree of imputation arithmetic unit when retreating, the accelerator A reverse accident prevention control device comprising: an accident prevention control unit that changes a proportional curve between an opening and an engine throttle valve opening to reduce an engine throttle valve opening relative to an accelerator opening.

  Further, the present invention is a reverse accident prevention control device for controlling a vehicle so that the vehicle speed does not increase according to the psychological state of the driver at the time of reverse, and calculates a busy degree of driving operation based on a vehicle signal. A busyness determination calculation unit that determines whether the busyness is greater than or equal to a preset threshold, and whether the driver's impatience is calculated based on the biological signal and whether the impatience is greater than or equal to a preset threshold The degree of busyness is determined to be greater than or equal to a preset threshold by the busyness determination calculation unit, and the degree of focus is set in advance by the degree of focus determination calculation unit. When it is determined that the value is equal to or greater than the threshold value, the proportional curve between the accelerator opening and the engine throttle valve opening is changed, and the engine throttle valve opening relative to the accelerator opening is changed. And accident prevention control unit to reduce a backward accident prevention control device comprising a.

  The busyness determination calculation unit may determine that the brake is suddenly braked due to the driver's impatience when the longitudinal acceleration during deceleration is greater than or equal to a preset threshold value, and increase the busyness.

  The busyness determination calculation unit determines that the shift is sudden before the vehicle speed becomes zero, or when the shift change speed is equal to or higher than a preset threshold value, a sudden shift change accompanying the driver's impatience state. And increase your busyness.

  When the accelerator is turned on within a preset time after the shift change, the busyness determination calculation unit may determine that the accelerator is a sudden accelerator accompanying the driver's impatience and increase the busyness.

  The busyness determination calculation unit, when the accelerator opening is equal to or greater than a preset threshold, and when the longitudinal acceleration at the time of acceleration is equal to or greater than a preset threshold, determines that the acceleration is a sudden acceleration accompanying the driver's impatience, Increase your busyness.

  When the vehicle speed is equal to or less than a preset threshold value and the steering angular velocity is equal to or greater than a preset threshold value, the busyness level determination calculation unit determines that the steering is suddenly steered due to the driver's impatience and increases the busyness level. And good.

  When the driver's heart rate is equal to or higher than a preset threshold value, the impatience determination calculation unit may determine that the driver is in a tension state and increase the impatience degree.

  When the resistance change of the skin of the driver's palm is greater than or equal to a preset threshold value, the impatience determination calculation unit may determine that the driver is in tension and increase the impatience.

  The impatience determination calculation unit may determine that the driver is in a tension state and increase the impatience degree when the difference in the facial skin temperature of the driver is equal to or greater than a preset threshold value.

  ADVANTAGE OF THE INVENTION According to this invention, after paying attention to a driver's impatience state, the reverse accident prevention control apparatus for reducing the automobile accident which generate | occur | produces at the time of reverse can be provided.

1 is a configuration diagram illustrating a reverse accident prevention control device according to the present invention. FIG. It is a flowchart which shows operation | movement of the busyness determination arithmetic unit of FIG. It is a flowchart which shows the detail of busyness determination of FIG. It is a flowchart which shows operation | movement of the degree-of-impression determination arithmetic unit of FIG. It is a flowchart which shows the detail of the impatience degree determination of FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

  When reversing, it is necessary to check the safety of the surroundings more than when moving forward.However, if the driver is impatient because of feelings such as rushing, the safety confirmation becomes complicated and the blind spot at the rear of the vehicle It causes oversight of existing obstacles.

  Therefore, when the driver is in a rushing state such as when driving backward, an alarm is presented to the driver (providing information), and at the same time, the vehicle speed is not increased according to the driver's psychological state when moving backward. We propose a reverse accident prevention control device that controls the vehicle.

  As shown in FIG. 1, the reverse accident prevention control apparatus 10 according to the present embodiment calculates a busy degree of driving operation based on a vehicle signal 11 and whether the busy degree is equal to or greater than a preset threshold value. A busyness determination calculation unit 12 that determines whether or not the driver is working, and a degree of imputation determination calculation unit 14 that calculates whether or not the driver's impatience is greater than or equal to a preset threshold value. And an accident prevention control unit 15 that changes the proportional curve between the accelerator opening and the engine throttle valve opening, and performs engine throttle control to reduce the engine throttle valve opening relative to the accelerator opening.

  The reverse accident prevention control device 10 is implemented as a program in an engine control unit (ECU), for example.

  The vehicle signal 11 is obtained from vehicle information managed by the engine control unit. Examples of the vehicle signal 11 include longitudinal acceleration, vehicle speed, shift information (information indicating the shift lever position and shift change speed), accelerator information (information indicating whether the accelerator is on), accelerator opening, and A signal related to the steering angular velocity can be mentioned.

  The busyness that is a criterion for determination in the busyness determination calculation unit 12 is a numerical value of the busyness of the driving operation. Predetermined values are set in advance for the sudden operation associated with the driver's impatience or according to the type of the sudden operation, and when the sudden operation is performed, the set value is the busyness level. Is done. Further, when a plurality of sudden operations are performed, a value obtained by adding the values set for the respective sudden operations is regarded as busy.

  The biological signal 13 is obtained from a heartbeat sensor, a pulse sensor, a resistance sensor, a temperature sensor, or the like. Examples of the heart rate sensor include one that measures a heart rate from a sensor unit arranged on a seat surface, and one that measures a heart rate from an electrode embedded in a handle. As the resistance sensor, there is a sensor that detects a resistance change of the skin of the palm by detecting a skin resistance reflex between the palms that changes due to mental sweating generated in the palm. Examples of the temperature sensor include a device that measures a difference in facial skin temperature (a temperature difference between a portion where the temperature changes according to the tension state and a portion where the temperature is substantially constant regardless of the tension state).

  The degree of impotence, which is a criterion for determination in the degree-of-impression calculation unit 14, is obtained by quantifying the driver's tension and the presence / absence of a mind. If the driver's heart rate or pulse rate increases compared to normal, if the resistance of the skin of the palm of the driver changes, or if the difference in the facial skin temperature of the driver changes, the increase Increase the degree of impatience according to the degree and amount of change.

  When the accident prevention control unit 15 determines that the busyness is greater than or equal to a preset threshold by the busyness determination calculation unit 12 during reverse, or when the reverse is greater than the threshold set by the impureness determination calculation unit 14 during the reverse When it is determined that the engine throttle control is performed, engine throttle control is performed.

  At this time, the accident prevention control unit 15 not only performs engine throttle control, but also performs brake assist control that increases the braking force by adding assistance to the brake to make the brake more effective than the normal state. An audio warning or screen information that prompts the driver to confirm further safety may be displayed, such as “Safety confirmation, caution!”.

  The accident prevention control unit 15 determines that the busyness level is greater than or equal to a preset threshold value by the busyness level determination calculation unit 12 when the vehicle is moving backward, and the impatience level is greater than or equal to a preset threshold value by the impatience level determination calculation unit 14. When it is determined that the engine throttle control is performed, engine throttle control may be performed. As a result, the busyness level and the impatience level can be determined in a composite manner, and the psychological state of the driver can be grasped more appropriately.

  Next, the operation of the reverse accident prevention control device 10 will be described.

  As shown in FIG. 2, the busy degree determination calculation unit 12 determines the busy degree in step S <b> 100. Specifically, based on the vehicle signal 11, it is determined whether or not the busyness of the driving operation is equal to or greater than a preset threshold value. If it is equal to or greater than the threshold value, the process proceeds to step S200, and if not, step S100 is repeated. .

  In subsequent step S200, the accident prevention control unit 15 determines whether or not the shift lever is in the reverse direction. If the shift lever is in the reverse direction, the process proceeds to step S300. Otherwise, the process returns to step S100.

  In step S300, the accident prevention control unit 15 performs accident prevention control such as engine throttle control, brake assist control, and alarm presentation (information provision).

  These series of controls are released when the shift lever is changed to a shift other than reverse.

  Here, the details of step S100 will be described. In step S100, the shift lever is changed from the brake operation to the gear stage, and the process of stepping on the accelerator is considered as a series of steps of the reverse operation, and the degree of busyness is comprehensively determined from the following requirements.

  As shown in FIG. 3, in step S100, the busyness is first reset to zero in step S101.

  Thereafter, the longitudinal acceleration is read in step S102, and when the longitudinal acceleration during deceleration is greater than or equal to a preset threshold value in step S103, it is determined that the brake is suddenly braked due to the driver's impatience, and the busyness is increased in step S104.

  Then, in step S105, the shift information is read. In step S106, when the shift change is performed before the vehicle speed becomes zero, or when the speed of the shift change is equal to or higher than a preset threshold, It is determined that there is a sudden shift change, and the busyness is increased in step S107.

  In step S108, the accelerator information is read. In step S109, when the accelerator is turned on (immediately) within a preset time after the shift change, it is determined that the driver is in a sudden accelerator state, and the degree of busyness in step S110. Increase.

  Further, in step S111, the accelerator opening and the longitudinal acceleration are read. In step S112, when the accelerator opening is equal to or greater than a preset threshold value and the longitudinal acceleration during acceleration is equal to or greater than the preset threshold value, It is determined that there is a sudden acceleration accompanying the impatience state, and the busyness is increased in step S113.

  In step S114, the steering angular velocity is read, and in step S115, when the vehicle speed is equal to or less than a preset threshold value and the steering angular velocity is equal to or greater than a preset threshold value, sudden steering (busy steering operation) associated with the driver's impatience state is performed. In step S116, the busy degree is increased.

  Finally, when it is determined in step S117 that the busy degree calculated in the previous steps S101 to S116 is equal to or more than a preset threshold value, the process proceeds to step S200, and if not, the process returns to step S101.

  In this way, the busyness is comprehensively determined. In this embodiment, the degree of busyness is added each time a sudden operation such as sudden braking is performed, and the obtained busyness is compared with a threshold value. However, any one of these sudden operations is performed. Or when any two or more of these sudden operations are performed, the process may proceed to step S300.

  On the other hand, as shown in FIG. 4, the impatience determination calculation unit 14 determines the impregnation degree in step S400. Specifically, it is determined based on the biological signal 13 whether the driver's degree of impatience is greater than or equal to a preset threshold value. If it is greater than or equal to the threshold value, the process proceeds to step S500, and if not, step S400 is repeated. .

  In the subsequent step S500, the accident prevention control unit 15 determines whether or not the shift lever is in the reverse direction. If the shift lever is in the reverse direction, the process proceeds to step S600, and if not, the process returns to step S400.

  In step S600, the accident prevention control unit 15 performs accident prevention control such as engine throttle control, brake assist control, and alarm presentation (information provision).

  Here, details of Step S400 are explained. Judgment degree is comprehensively determined from the following requirements.

  As shown in FIG. 5, in step S400, first, the degree of impatience is reset to zero in step S401.

  Thereafter, the heart rate of the driver is read in step S402, and when the driver's heart rate is greater than or equal to a preset threshold value in step S403, it is determined that the driver is in tension, and the degree of impatience is increased in step S404. .

  In step S405, the driver's palm skin resistance change is read. In step S406, if the driver's palm skin resistance change is equal to or greater than a preset threshold value, it is determined that the driver is in tension. In S407, the degree of impatience is increased.

  Further, in step S408, the difference in the facial skin temperature of the driver is read. In step S409, when the partial difference in the facial skin temperature of the driver is equal to or greater than a preset threshold, it is determined that the driver is in tension. In step S410, the degree of impatience is increased.

  Finally, when it is determined in step S411 that the degree of impingement calculated in the previous steps S401 to S410 is greater than or equal to a preset threshold value, the process proceeds to step S500, and if not, the process returns to step S401.

  In this way, the degree of impatience is comprehensively determined. In the present embodiment, the degree of impregnation is added each time it is determined that the person is in a tension state due to an increase in heart rate and the like, and the obtained degree of impotence is compared with a threshold value. The process may be shifted to step S600 when it corresponds to one, or when any two or more of them correspond.

  With the above operation, the driver's psychological state can be grasped, and when the driver tries to retreat in the impatient state, the vehicle's behavior is calmed and controlled safely by suppressing sudden acceleration by engine throttle control. The margin can be widened.

  Similarly, the vehicle can be quickly stopped when the brake is depressed by the brake assist control.

  Furthermore, when the driver is in an impatience state, the driver can be alerted by providing an alarm (providing information) to raise awareness of safety confirmation.

DESCRIPTION OF SYMBOLS 10 Backward accident prevention control apparatus 11 Vehicle signal 12 Busy degree determination arithmetic unit 13 Biological signal 14 Irrigation degree determination arithmetic unit 15 Accident prevention control unit

Claims (11)

A reverse accident prevention control device for controlling the vehicle so that the vehicle speed does not increase according to the psychological state of the driver when reversing,
A busyness determination calculation unit that calculates the busyness of the driving operation based on the vehicle signal and determines whether the busyness is equal to or greater than a preset threshold;
When the busyness determination calculation unit determines that the busyness is greater than or equal to a preset threshold value, the proportional curve between the accelerator opening and the engine throttle valve opening is changed, and the engine throttle valve opening relative to the accelerator opening is determined. Accident prevention control unit to reduce
A reverse accident prevention control device comprising: A reverse accident prevention control device for controlling the vehicle so that the vehicle speed does not increase according to the psychological state of the driver when reversing,
A degree of imputation calculating unit for calculating the degree of impatience of the driver based on the biological signal and determining whether the degree of impending is equal to or greater than a preset threshold;
When the impingement degree is determined to be greater than or equal to a preset threshold by the impregnation degree calculation unit during reverse, the proportional curve between the accelerator opening and the engine throttle valve opening is changed, and the engine throttle valve opening relative to the accelerator opening is changed. Accident prevention control unit to reduce
A reverse accident prevention control device comprising: A reverse accident prevention control device for controlling the vehicle so that the vehicle speed does not increase according to the psychological state of the driver when reversing,
A busyness determination calculation unit that calculates the busyness of the driving operation based on the vehicle signal and determines whether the busyness is equal to or greater than a preset threshold;
A degree of imputation calculating unit for calculating the degree of impatience of the driver based on the biological signal and determining whether the degree of impending is equal to or greater than a preset threshold;
When it is determined that the busyness is greater than or equal to a preset threshold by the busyness determination calculation unit and when the reverse is determined by the impatience determination calculation unit to be greater than or equal to a preset threshold, An accident prevention control unit that changes a proportional curve between the opening and the engine throttle valve opening, and reduces the engine throttle valve opening relative to the accelerator opening;
A reverse accident prevention control device comprising:   The backward movement according to claim 1 or 3, wherein the busyness determination calculation unit determines that the brake is suddenly braked due to a driver's impatience when the longitudinal acceleration during deceleration is equal to or greater than a preset threshold value, and increases the busyness. Accident prevention control device.   The busyness determination calculation unit determines that the shift is sudden before the vehicle speed becomes zero, or when the shift change speed is equal to or higher than a preset threshold value, a sudden shift change accompanying the driver's impatience state. The reverse accident prevention control device according to claim 1 or 3, wherein the busyness is increased.   4. The busyness determination calculation unit according to claim 1, wherein when the accelerator is turned on within a preset time after a shift change, the busyness determination unit determines that the accelerator is a sudden accelerator associated with the driver's impatience and increases the busyness. Backward accident prevention control device.   The busyness determination calculation unit, when the accelerator opening is equal to or greater than a preset threshold, and when the longitudinal acceleration at the time of acceleration is equal to or greater than a preset threshold, determines that the acceleration is a sudden acceleration accompanying the driver's impatience, 4. The reverse accident prevention control device according to claim 1 or 3, wherein the busyness is increased.   When the vehicle speed is equal to or less than a preset threshold value and the steering angular velocity is equal to or greater than a preset threshold value, the busyness level determination calculation unit determines that the steering is suddenly steered due to the driver's impatience and increases the busyness level. The reverse accident prevention control device according to claim 1 or 3.   4. The reverse accident according to claim 2, wherein when the driver's heart rate is equal to or higher than a preset threshold value, the impatience determination calculation unit determines that the driver is in a tension state and increases the impatience. Prevention control device.   4. The impatience determination calculation unit determines that the driver is in a tension state when the resistance change of the skin of the palm of the driver is greater than or equal to a preset threshold value, and increases the impatience degree. Accident prevention control device for reverse.   4. The degree of impatience determination calculation unit determines that the driver is in a tension state and increases the degree of impatience when the difference in the facial skin temperature of the driver is equal to or greater than a preset threshold value. 5. Accident prevention control device for reverse.

Images