JP2013003600A - Driving support device and driving support method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving support device and a driving support method which can reduce too much or too little driving support.SOLUTION: The driving support device 1 includes: driving state determination means for determining whether a driving state for a first period including the present time is normal by comparing it with a driving state in the past stored for a period longer than the first period; driving tendency determination means for determining whether a driving tendency for a second period longer than the first period is good; menu selection means for selecting a driving support menu on the basis of the result of the determination by the driving state determination means and the result of the determination by the driving tendency determination means; item selection means for selecting a driving support item from the driving support menu selected by the menu selection means on the basis of an input by a driver; and driving support execution means for executing a driving support corresponding to the driving support item selected by the item selection means.

Description

  The present invention relates to a driving support device and a driving support method that support driving of a vehicle.

  Conventionally, as such a driving assistance device, a driver with low driving ability performs driving assistance at a high assistance level such as forced intervention operation, and a warning is given to a driver with high driving ability. A device that performs driving support at a low support level such as a vehicle is disclosed (for example, see Patent Document 1).

JP 2009-282702 A

  In the above-described driving support device, a driver with a high driving ability is not executed at a high driving level, so that it is difficult for a driver with a high driving ability to feel annoyance. However, even a driver with low driving ability may feel annoying driving support at a high support level. In addition, if the driver with low driving ability continues to perform driving assistance at a high assistance level, the driver depends on the driving assistance device, which may hinder improvement of driving ability.

  The objective of this invention is providing the driving assistance apparatus and driving assistance method which can reduce the excess and deficiency of driving assistance.

  A driving support device according to the present invention is a driving support device that selects any one of a plurality of types of driving support menus and performs driving support based on the selected driving support menu, and is a driving in a first period including the present time. The driving situation judgment means for judging whether the situation is normal as compared with the past driving situation accumulated for a longer period than the first period, and the driving tendency of the second period longer than the first period tends to be good. Based on the input by the driver, the menu selection means for selecting the driving assistance menu based on the judgment result of the driving tendency judgment means, the judgment result of the driving situation judgment means, and the judgment result of the driving tendency judgment means An item selection means for selecting a driving assistance item from the driving assistance menu selected by the menu selection means, and a driving assistance corresponding to the driving assistance item selected by the item selection means. Characterized in that and a driving support execution means for executing.

  The driving support method according to the present invention is a driving support method that selects any one of a plurality of types of driving support menus and executes driving support based on the selected driving support menu, and includes a first period including the present time. The driving situation judgment step for judging whether the driving situation is normal compared with the past driving situation accumulated for a longer period than the first period, and the driving tendency of the second period longer than the first period tend to be good A driver selection menu for selecting a driving assistance menu based on a determination result of a driving tendency determination step, a determination result of a driving situation determination step, a determination result of a driving tendency determination step, and input by a driver Based on the item selection step for selecting a driving assistance item from the driving assistance menu selected in the menu selection step and the item selection step. And driving assistance execution step of executing the driving support corresponding to the rolling support items, characterized by comprising a.

  In such a driving support device and driving support method, both whether the driving situation in the first period is normal compared to the past driving situation and whether the driving tendency in the second period tends to be good. Based on this, a driving assistance menu is selected. Furthermore, a driving assistance item is selected from the selected driving assistance menu based on an input by the driver, and driving assistance corresponding to the selected driving assistance item is executed. Thereby, for example, the driving support menu can be selected from a short-term viewpoint of whether or not the driving performed at the present time is normal. Also, for example, whether the driver tends to accept driving assistance (for example, is the interest in safe driving manners increased) or whether the driver is conscious of trying to improve the driving tendency. The driving assistance menu can be selected from a simple viewpoint. Furthermore, it is possible to select a driving support item according to the driver's preference. Therefore, excessive or deficient driving assistance can be reduced.

  Preferably, the menu selection means determines that the driving condition of the first period is not normal compared to the past driving condition by the driving condition determination means, and the driving tendency of the second period tends to be good by the driving tendency determination means. If it is determined that there is a driving assistance menu having a higher assistance level than the driving assistance menu selected in other cases.

  In this case, when it is determined that the driving condition in the first period is not normal compared to the past driving condition and the driving tendency in the second period is determined to be good (first case), other cases ( A driving support menu having a higher support level than the driving support menu selected in the second case) is selected. In the first case, since the driving situation in the first period is not normal compared to the past driving situation, there is a high possibility that driving assistance at a high assistance level is necessary to make the driving situation normal. Further, in the first case, the driving tendency in the second period tends to be good, and thus driving assistance tends to be easily accepted by the driver (for example, the driver's interest in safe driving manners is likely to increase). The driving assistance is unlikely to make the driver feel bothersome. Furthermore, in the first case, since the driving tendency in the second period tends to be good, the driver is likely to have a consciousness of improving the driving tendency, and depends on driving support at a high support level. The driver's driving tendency is unlikely to decline. For this reason, in the first case, by selecting a driving support menu having a higher support level than the driving support menu selected in the second case, it is possible to further reduce the driving support excess or deficiency.

  Preferably, the menu selection means has a higher number of driving support items than the driving support menu selected in other cases as a driving support menu having a higher support level than the driving support menu selected in other cases. Select the driving assistance menu. In this case, in the first case, there are more choices of driving support items than in the second case, and it is possible to select driving support items according to the driver's preference.

  Preferably, the apparatus further includes menu display means for displaying the driving assistance menu selected by the menu selection means. In this case, it is possible to indicate to the driver whether or not the driving tendency tends to be good through the support level of the driving support menu.

  According to the driving support apparatus and the driving support method according to the present invention, it is possible to reduce excess or deficiency of driving support.

1 is a block diagram showing an embodiment of a driving support apparatus according to the present invention. It is a flowchart which shows the driving assistance procedure by the driving assistance device of FIG. It is a figure which shows the example of driving | operation data. It is a figure which shows the example of a display of a driving assistance menu. It is a figure which shows the selection criteria of a driving assistance menu.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a driving assistance apparatus according to the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 1, the driving support device 1 includes a behavior detection device 2, an external environment detection device 3, an input state detection device 4, a notification device 5, a steering control device 6, and an acceleration / deceleration control device 7. The driving data storage device 8, the driving assistance menu display device 20, the driving assistance item selection device 21, and the ECU 9 are provided.

  The behavior detection device 2 is a device that detects information related to the behavior of the host vehicle, and includes, for example, a G sensor 10 and a vehicle speed sensor 11. The G sensor 10 is a sensor that detects acceleration in the front-rear direction and the left-right direction of the host vehicle. The vehicle speed sensor 11 is a sensor that detects the speed of the host vehicle.

  The external environment detection device 3 is a device that detects information related to the external environment of the host vehicle, and includes, for example, a radar 12, an outside camera 13, a navigation device 14, and the like. The radar 12 is, for example, a laser radar, a millimeter wave radar, or the like, and detects an obstacle around the own vehicle and a distance from the obstacle. The vehicle exterior camera 13 is a camera that captures the front-rear direction and the left-right direction of the host vehicle. The navigation device 14 is a device that generates surrounding map information of the host vehicle, for example, by GPS.

  The input state detection device 4 is a device that detects information related to an operation input state by the driver, and includes, for example, a brake pedal sensor 15, an accelerator pedal sensor 16, a winker sensor 17, a steering sensor 18, and the like. The brake pedal sensor 15 is a sensor that detects the depression amount of the brake pedal. The accelerator pedal sensor 16 is a sensor that detects the amount of depression of the accelerator pedal. The winker sensor 17 is a sensor that detects on / off of the winker. The steering sensor 18 is a sensor that detects the rotation angle of the steering wheel.

  The notification device 5 is a driving support execution means, and is a device that issues a warning to the driver by, for example, video, audio, vibration, or the like.

  The steering control device 6 is a driving support execution means, for example, a device that controls the steering angle of the host vehicle via a steering actuator.

  The acceleration / deceleration control device 7 is a driving support execution means, for example, a device that controls the start, stop, and acceleration / deceleration of the host vehicle via a throttle actuator or a brake actuator.

  The operation data storage device 8 is a device that stores operation data described later.

  The driving support menu display device 20 is a device that displays a selected driving support menu (described later) on, for example, a liquid crystal monitor.

  The driving assistance item selection device 21 is a device that selects a driving assistance item from a selected driving assistance menu based on an input by the driver. The driving support item selection device 21 is provided with an input unit 22 that detects an input by the driver. The input unit 22 is, for example, a plurality of buttons. The input unit 22 may be a touch panel. In this case, the touch panel may also serve as the driving support menu display device 20.

  The ECU 9 performs driving support control according to the procedure shown in FIG. First, ECU9 acquires the information regarding the external environment of the own vehicle using the external environment detection apparatus 3 (step S1). Specifically, for example, the radar 12 and the outside camera 13 are used, and the presence / absence of a preceding vehicle and the distance to the preceding vehicle are acquired. In addition, the camera 13 outside the vehicle is used to obtain the distance from the left and right white lines. In addition, the outside camera 13 and the navigation device 14 are used, and the distance from the intersection ahead is acquired.

  Then, ECU9 acquires the information regarding the behavior of the own vehicle using the behavior detection apparatus 2 (step S2). Specifically, for example, the G sensor 10 is used to detect acceleration in the front-rear direction and the left-right direction of the host vehicle. Further, the vehicle speed sensor 11 is used to detect the speed of the host vehicle.

  Subsequently, the ECU 9 uses the input state detection device 4 to acquire information related to the operation input state by the driver (step S3). Specifically, for example, the brake pedal sensor 15 is used to detect the depression amount of the brake pedal. An accelerator pedal sensor 16 is used to detect the amount of depression of the accelerator pedal. In addition, a winker sensor 17 is used to detect on / off of the winker. A steering sensor 18 is used to detect the rotation angle of the steering wheel.

  Subsequently, the ECU 9 calculates driving data using information related to the external environment of the host vehicle, information related to the behavior of the host vehicle, and information related to an operation input state by the driver (step S4), and stores the driving data in the driving data storage device 8. (Step S5).

  FIG. 3 is a diagram illustrating calculated operation data. In the example shown in FIG. 3, when there is a preceding vehicle, an approaching state to the preceding vehicle is calculated as driving data related to the behavior of the host vehicle. The approach situation to the preceding vehicle is, for example, a distance to the preceding vehicle and a relative speed. Further, an accelerator off timing and a brake start timing are calculated as operation data related to the operation input state. The accelerator off timing is, for example, the distance to the preceding vehicle when the amount of accelerator depression becomes zero. The brake start timing is, for example, the distance to the preceding vehicle when starting to depress the brake.

  When there is no preceding vehicle, an acceleration / deceleration pattern is calculated as driving data related to the behavior of the host vehicle. As operation data related to the operation input state, an accelerator opening / closing pattern and an accelerator opening are calculated.

  When there is no preceding vehicle and passes through an intersection, speed and acceleration / deceleration patterns are calculated as driving data related to the behavior of the host vehicle. As driving data related to the operation input state, an accelerator opening, an accelerator opening / closing pattern, and a brake depression pattern are calculated.

  When there is no preceding vehicle and the vehicle stops at the intersection, a deceleration pattern and a stop position are calculated as operation data related to the behavior of the host vehicle. As driving data related to the operation input state, an accelerator off timing and a brake start timing are calculated. The accelerator off timing is, for example, the distance to the intersection when the accelerator is off. The brake start timing is, for example, the distance to the intersection at the start of the brake.

  Further, as the driving data related to the behavior in the lateral direction of the host vehicle, a variation pattern of the distance to the white line, variation in the lateral G, and the like are calculated. The correction steering start timing and the blinker timing are calculated as driving data related to the lateral operation input state. The correction steering start timing is, for example, the distance to the white lines on the left and right sides of the host vehicle when the correction steering is started. The winker timing is, for example, a travel distance from when the winker is turned on until steering is started.

  Subsequently, the ECU 9 calculates the driving situation in the first period including the present (step S6). For example, in the present embodiment, a period from when the engine is started to the present is set as the first period. The driving situation is calculated based on at least one type of the driving data. For example, an average value, a maximum value, a minimum value, a fluctuation range, a fluctuation period, or the like of the driving data in the first period is calculated as the driving situation in the first period.

  Subsequently, as shown in FIG. 2, the ECU 9 calculates the driving tendency of the second period longer than the first period (step S7). For example, in the present embodiment, the period from one month ago to the present is set as the second period. The driving tendency is calculated based on the same type of driving data as the driving data used for calculating the driving situation. For example, as the driving tendency of the second period, the slope of the driving data in the second period is calculated. The slope of the driving data in the second period is calculated by removing short-term fluctuations from the change over time in the driving tendency in the second period. The means for removing short-term fluctuations is, for example, linear approximation, polynomial approximation, or filtering.

  Subsequently, as shown in FIG. 2, the ECU 9 determines whether or not the driving condition in the first period is normal (step S8). Whether or not the driving situation in the first period is normal is determined by comparing with the past driving situation over a longer period than in the first period. For example, the determination is made by comparing the driving situation between one week ago and the present time with the driving situation during the period from the start of the engine to the present day (first period). That is, the ECU 9 operates as a driving state determination unit. The past driving situation includes, for example, an average value, a maximum value, a minimum value, a fluctuation range, or a fluctuation period of past driving data accumulated in the driving data storage device 8 for a longer period than the first period. Calculated.

  For example, when there is a preceding vehicle, when the distance to the preceding vehicle is small compared to the past, when the relative speed with the preceding vehicle is large, or when the distance to the preceding vehicle when the accelerator depression amount is zero When the distance to the preceding vehicle when starting to step on the brake is small, it is determined that the driving condition in the first period is not normal.

  Further, when there is no preceding vehicle, when the variation of the acceleration / deceleration pattern is larger than in the past, when the variation of the accelerator opening / closing pattern is large, and when the accelerator opening is large, the driving situation of the first period is It is judged that it is not normal.

  Also, when there is no preceding vehicle and passes through an intersection, when the speed is higher than the past, when the acceleration / deceleration pattern varies greatly, when the accelerator opening is large, when the accelerator opening / closing pattern varies greatly, and when braking When the variation of the stepping pattern is large, it is determined that the driving situation in the first period is not normal.

  Also, when there is no preceding vehicle and the vehicle stops at the intersection, the deceleration pattern is steeper compared to the past, the stop position is close to the intersection, the distance to the intersection when the accelerator is off, and when the brake starts When the distance to the intersection is large, it is determined that the driving situation in the first period is not normal.

  Also, compared to the past, when the variation in the distance to the left and right white lines is large, when the variation in the lateral G is large, when the distance to the white lines on the left and right of the vehicle at the start of the correction steering is small, and after turning the blinker on When the travel distance until the steering is started is small, it is determined that the driving condition in the first period is not normal.

  Subsequently, as shown in FIG. 2, when the ECU 9 determines that the driving situation in the first period is normal, the driving assistance menu at the normal assistance level or the driving assistance at the low assistance level is selected from a plurality of types of driving assistance menus. A menu is selected (step S9).

  Here, each driving assistance menu is, for example, a menu of driving assistance items such as notification of information prompting the driving operation and forced intervention in the driving operation. The notification of the information prompting the driving operation is, for example, notification by the notification device 5 of information that prompts the accelerator to be off, information that prompts the start of braking, information that informs the approach of the preceding vehicle, information that informs the departure from the traveling road, and the like. It is to be. The forced intervention in the driving operation is, for example, performing forced steering by the steering control device 6 and forced deceleration / stopping by the acceleration / deceleration control device 7.

  The driving support level is the degree of involvement of the driver in driving operation. From the viewpoint of the amount of information prompting the driving operation, the support level is higher when the amount of information is large. From the viewpoint of notifying information for prompting driving operation, the support level is higher when the notification timing is earlier. In terms of the amount of forced intervention in driving operations, the greater the intervention amount, the higher the support level. The large amount of intervention includes, for example, a large steering angle by forced intervention and a large acceleration / deceleration by forced intervention. In terms of the timing of forced intervention in driving operations, the earlier the intervention timing, the higher the support level. The information notification timing and the forced intervention timing are determined based on, for example, TTC (Time To Collision). TTC is the time until the closest approach to an obstacle such as a preceding vehicle. In addition, in the notification of information for prompting the driving operation and the forced intervention in the driving operation, the level of support is higher in the forced intervention in the driving operation.

  Each driving support item is specified by the type of driving support and the support level. Accordingly, each driving support menu may include a plurality of driving support items having different driving support types, and may include a plurality of driving support items having the same driving support type and different support levels.

  The support level of the driving support menu is the degree of involvement of the driver in the driving operation as the entire driving support item of the driving support menu. When the support level for each driving support item increases, the support level of the driving support menu including the driving support item also increases. Further, in terms of the number of driving support items included in the driving support menu, the support level is higher when the number of items is larger.

  Subsequently, the ECU 9 displays the selected driving assistance menu on the driving assistance menu display device 20 (step S10). FIG. 4 is a diagram illustrating a display example of the driving support menu. In FIG. 4, eight lines L1 to L8 extending radially from the point P0, points P1 to P8 arranged on the lines L1 to L8, and positions closer to the point P0 than the points P1 to P8. The driving support menu is displayed by points P11 to P18 arranged on L1 to L8 and a polygon M having apexes of points P1 to P8. The driving support items of the driving support menu are indicated by points P1 to P8 and P11 to P18. The support level of each driving support item is indicated by the distance between the point P0 and the points P1 to P8 and P11 to P18. Further, the support level of the driving support menu is shown by a polygon M having points P1 to P8 as vertices.

  FIG. 4A shows a display example of a driving assistance menu having the highest assistance level among a plurality of types of driving assistance menus. In FIG. 4A, an octagonal polygon M is drawn with the points P1 to P8 arranged at the ends of the lines L1 to L8 as vertices.

  FIG. 4B shows a display example of a driving assistance menu having a lower assistance level than the driving assistance menu displayed in the example of FIG. The driving support menu displayed in the example of FIG. 4B does not include driving support items corresponding to the points P1, P3, P4, P6, P7, P13, and P17 of FIG. Corresponding to this, in FIG. 4B, the polygon M which was an octagon in FIG. 4A is a hexagon. In FIG. 4B, the size of the polygon M is smaller than the size of the polygon M in FIG. As described above, according to the display example of FIG. 4, the driver can grasp the support level of the selected driving support menu based on the size and shape of the polygon M.

  Subsequently, as shown in FIG. 2, the ECU 9 selects a driving support item from the selected driving support menu by the driving support item selection device 21 (step S11), and executes the selected driving support item (step S12). . The driver can select a driving support item with reference to the driving support menu displayed on the driving support menu display device 20 and input the item to the input unit 22 of the driving support item selection device 21.

  On the other hand, as shown in FIG. 2, when the ECU 9 determines that the driving condition in the first period is not normal in step S <b> 8, the ECU 9 determines whether the driving tendency in the second period longer than the first period is good. (Step S13). That is, the ECU 9 operates as driving tendency determination means. For example, in this embodiment, if the slope of the operation data in the second period shows an improvement trend, the drive tendency in the second period tends to be good, and the slope of the operation data in the second period shows an improvement trend. Otherwise, it is determined that the driving tendency in the second period is not good.

  If the ECU 9 determines that the driving tendency in the second period is good, the ECU 9 selects and executes a driving assistance menu with a high assistance level (step S14), and proceeds to step S10.

  For example, the amount of information notified to the driver in step S14 is larger than the amount of information notified to the driver in step S9. Alternatively, the amount of forced intervention performed in step S14 is larger than the amount of forced intervention performed in step S9. Alternatively, the timing at which information notification and forced intervention are performed in step S14 is earlier than the timing at which information notification and forced intervention are performed in step S9. That is, the TTC when information notification and forced intervention are performed in step S14 is larger than the TTC when information notification and forced intervention is performed in step S9. Alternatively, the number of driving support items in the driving support menu selected in step S14 is larger than the number of driving support items in the driving support menu selected in step S9.

  On the other hand, if the ECU 9 determines that the driving tendency in the second period does not tend to be good in step S13, the ECU 9 selects a driving assistance menu having a normal assistance level or a driving assistance menu having a low assistance level (step S15). move on.

  Thus, according to the driving support device 1 of the present embodiment, whether the driving situation in the first period is normal compared to the past driving situation, and whether the driving tendency in the second period is good. The driving support menu is selected based on both of the above. Furthermore, a driving assistance item is selected from the selected driving assistance menu based on an input by the driver, and driving assistance corresponding to the selected driving assistance item is executed. Thereby, for example, the driving support menu can be selected from a short-term viewpoint of whether or not the driving performed at the present time is normal. Also, for example, whether the driver tends to accept driving assistance (for example, is the interest in safe driving manners increased) or whether the driver is conscious of trying to improve the driving tendency. The driving assistance menu can be selected from a simple viewpoint. Furthermore, it is possible to select a driving support item according to the driver's preference. Therefore, excessive or deficient driving assistance can be reduced.

  FIG. 5 is a diagram showing selection criteria for the driving support menu by the driving support device 1. In FIG. 5, the vertical axis represents the driving situation level, and the horizontal axis represents the driving tendency level. Line L9 is a past driving situation. If the driving state in the first period is higher than the line L9, it is normal, and if it is lower than the line L9, it is not normal. Line L10 is a boundary relating to whether the driving tendency is good or bad (for example, when the slope of the driving data in the second period does not indicate an improvement tendency or a reduction tendency). The driving tendency of the second period is likely to be a level higher than that of the line L10, and does not tend to be good if it is a level lower than that of the line L10. According to the driving assistance device 1, in the area A1 where the driving situation is higher than the line L9, the driving assistance menu at the normal assistance level or the driving assistance menu at the lower assistance level is selected. In the area A2 where the driving situation is lower than the line L9 and the driving tendency is lower than the line L10, the driving support menu at the normal support level or the driving support menu at the lower support level is selected. In the area A3 where the driving situation is lower than the line L9 and the driving tendency is higher than the line L10, the driving support menu having a higher support level than the driving support menu selected in the areas A1 and A2 is displayed. Selected.

  In the area A3, since the driving situation in the first period is not normal compared to the past driving situation, there is a high possibility that a high assistance level of driving assistance is necessary to make the driving situation normal. In area A3, since the driving tendency in the second period tends to be good, driving support tends to be easily accepted by the driver (for example, the driver's interest in safe driving manners is likely to increase). The driving assistance is unlikely to make the driver feel bothersome. Furthermore, in area A3, since the driving tendency in the second period tends to be good, it is highly likely that the driver is conscious of improving the driving tendency, and driving by relying on driving support at a high support level. It is unlikely that the driver's driving tendency will decrease. For this reason, in area A3, by selecting a driving assistance menu having a higher assistance level than the driving assistance menus selected in area A1 and area A2, it is possible to reduce the excess or deficiency of driving assistance.

  Note that when the amount of information to be notified for prompting the driving operation is changed as the support level, the driving support device 1 further exhibits the following action. In area A3, since the driving tendency in the second period tends to be good, there is a high possibility that the driving ability of the driver is also increased. That is, the driver is likely to respond to a lot of information prompting the driving operation without being confused. On the other hand, in area A2, since the driving tendency in the second period does not tend to be good, there is a high possibility that the driving ability of the driver is not increased. That is, the driver may be confused when the amount of information prompting the driving operation increases. For this reason, excess and deficiency of driving assistance can be reduced by making the amount of information notified in area A3 larger than the amount of information notified in area A2.

  Moreover, when the timing of the forced intervention to a driving operation can be changed as a support level, the driving support device 1 further exhibits the following action. In area A2, since the driving tendency in the second period does not tend to be good, there is a high possibility that the driver's interest in safe driving has not increased. If the driver's interest in safe driving is not increasing, if forced intervention is performed at an early timing, the driver may not feel a risk such as a collision, and the driver's interest in safe driving may not increase. For example, if forced intervention is performed while the TTC is large, the risk of collision is avoided while the distance to the obstacle is large, so the driver cannot realize the risk of collision and the driver's interest in safe driving May not rise. For this reason, it is possible to reduce the excess or deficiency of the driving assistance by making the timing of performing the forced intervention in the area A3 earlier than the timing of performing the forced intervention in the area A2.

  When the number of driving support items included in the driving support menu can be changed as the support level, the area A3 has more options for driving support items than the areas A1 and A2, and more according to the driver's preference. Driving support items can be selected.

  In addition, since the driving support device 1 of the present embodiment further includes the driving support menu display device 20 that displays the driving support menu selected by the ECU 9, the driver has a driving tendency via the support level of the driving support menu. Can show if it is good. Thereby, it is expected that the driver's consciousness to improve the driving tendency is enhanced.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not necessarily restricted to embodiment mentioned above, A various change is possible in the range which does not deviate from the summary.

  In the driving support device 1, the same type of driving data is used for calculating the driving tendency and the driving situation, but different types of driving data may be used for calculating the driving tendency and calculating the driving situation. . For example, driving data related to driver's risk sensitivity (driver's response speed to risk) is used to calculate driving conditions, and driving data related to safe driving manners (deceleration start timing and blinker timing at intersections) is used to calculate driving tendency. It may be used.

  Further, the driving support device 1 determines whether or not the driving tendency of the second period tends to be good based on whether or not the inclination of the driving data of the second period shows an improving tendency. Not limited. For example, whether or not the driving tendency in the second period tends to be good may be determined in comparison with the past driving tendency over a longer period than the second period. In this case, for example, as the driving tendency of the second period, an average value, maximum value, minimum value, fluctuation range, fluctuation period, or the like of the driving data in the second period is calculated. Further, as the past driving tendency, an average value, maximum value, minimum value, fluctuation range, fluctuation period, or the like of the driving data accumulated in the driving data storage device 8 for a longer period than the second period is calculated.

  In addition, the driving support item selection device 21 includes a storage unit that stores an input history for each driver and a driver identification unit that identifies the driver, and the driver's input history identified by the driver identification unit. Based on this, a driving support item may be selected. The driver identification unit is, for example, a device that reads the driver ID registered in the IC of the electronic key. The driver identification unit may acquire a driver identification result in another device. The other device is, for example, a device that automatically adjusts the seat position by identifying the driver.

  DESCRIPTION OF SYMBOLS 5 ... Notification apparatus (driving support execution means), 6 ... Steering control apparatus (driving support execution means), 7 ... Acceleration / deceleration control apparatus (driving support execution means), 9 ... ECU (driving condition judgment means, driving tendency judgment means) 20 ... Driving assistance menu display device, 21 ... Driving assistance item selection device.

Claims (5)

A driving support device that selects one of a plurality of types of driving support menus and executes driving support based on the selected driving support menu,
Driving status determination means for determining whether the driving status of the first period including the present is normal compared to the past driving status accumulated over a longer period of time than the first period;
Driving tendency judgment means for judging whether or not the driving tendency of the second period longer than the first period is good;
Menu selection means for selecting the driving support menu based on the determination result of the driving situation determination means and the determination result of the driving tendency determination means;
Item selection means for selecting a driving assistance item from the driving assistance menu selected by the menu selection means based on an input by the driver;
A driving assistance apparatus comprising: driving assistance execution means for executing driving assistance corresponding to the driving assistance item selected by the item selection means.   The menu selection means determines that the driving condition of the first period is not normal compared to the past driving condition by the driving condition determination means, and the driving tendency of the second period is determined by the driving tendency determination means. 2. The driving support device according to claim 1, wherein when it is determined that the driving tendency is good, the driving support menu having a higher support level is selected as compared with the driving support menu selected in other cases.   The menu selection means has a higher support level than the driving support menu selected in the other case, and the number of the driving support items as the driving support menu selected in the other case is higher than the driving support menu selected in the other case. 3. The driving support apparatus according to claim 2, wherein the driving support menu having a large number is selected.   The driving support apparatus according to any one of claims 1 to 3, further comprising menu display means for displaying the driving support menu selected by the menu selection means. A driving support method for selecting one of a plurality of types of driving support menus and executing driving support based on the selected driving support menu,
An operation status determination step for determining whether the operation status of the first period including the present is normal compared to the past operation status accumulated over a longer period than the first period;
A driving tendency judgment step for judging whether or not the driving tendency of the second period longer than the first period is good;
A menu selection step for selecting the driving support menu based on the determination result of the driving situation determination step and the determination result of the driving tendency determination step;
An item selection step for selecting a driving assistance item from the driving assistance menu selected in the menu selection step based on an input by the driver;
A driving support execution step of executing driving support corresponding to the driving support item selected in the item selection step;

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