JP2010205147A - Driving support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving support device which performs driving support which takes into consideration the driver's traveling characteristics of another vehicle. <P>SOLUTION: The driving support device 1 includes an inter-vehicle communication device 3, an information providing support unit 5, an attention attraction support unit 6 and an ECU 7. In the driving support device 1, the inter-vehicle communication device 3 receives information regarding the driver's traveling characteristics of the other vehicle. Then on the basis of the traveling information of the driver of the other vehicle, the ECU 7 changes the driving support form which is to be carried out between the information providing support unit 5 and the attention attraction support unit 6. Consequently, driving support can be executed, which takes into consideration the driver's traveling characteristics of the other vehicle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a driving support device that performs driving support when a host vehicle such as an automobile joins a priority road.

  As a conventional driving assistance device, for example, a device described in Patent Document 1 is known. In such a driving support device, when the own vehicle joins the priority road (main line) on which the other vehicle travels at the intersection, the position of the other vehicle and the position of the own vehicle after the joining are estimated. Based on the estimation result, a merging timing that does not hinder the traveling of other vehicles is instructed.

JP 2007-141053 A

  However, in the driving support apparatus as described above, for example, depending on the driver travel characteristics (average vehicle speed, amount of acceleration / deceleration change, average inter-vehicle distance, etc.) of other vehicles, after the own vehicle joins the priority road, The driver of the vehicle may feel uncomfortable.

  Then, this invention makes it a subject to provide the driving assistance apparatus which can perform the driving assistance which considered the driver driving | running | working characteristic of the other vehicle.

  In order to achieve the above object, a driving support apparatus according to the present invention provides driving support for a host vehicle based on information related to other vehicles traveling on the priority road when the host vehicle joins the priority road. Driving assistance based on driving characteristic acquisition means for acquiring information relating to driver driving characteristics of other vehicles, driving assistance execution means for executing driving assistance, and information relating to driver driving characteristics acquired by the driving characteristic acquisition means. Driving assistance mode changing means for changing the mode of driving assistance executed by the executing means.

  In this driving support device, information related to the driver travel characteristics of the other vehicle is acquired, and the mode of driving support is changed based on the information related to the driver travel characteristics. Therefore, it is possible to execute driving support in consideration of the driver travel characteristics of the vehicle. As a result, since the driver travel characteristics are different between the host vehicle and the other vehicle, the driver of the host vehicle and the other vehicle can be prevented from feeling uncomfortable.

  Here, the driver travel characteristic may be at least one of an average vehicle speed, an acceleration / deceleration change amount, and an inter-vehicle distance from the preceding vehicle.

  Moreover, it is preferable that a driving assistance mode change means changes the driving assistance mode according to the roughness of the driver travel characteristics of the other vehicle. In this case, when the driving characteristics of the other vehicle are rough, for example, driving assistance is performed so that the other vehicle passes first, and as a result, after the own vehicle joins the priority road, the other vehicle can be beaten or overtaken. Can be suppressed.

  In addition, it is preferable that the driving support mode changing unit changes the mode of driving support between the information providing support and the alerting support. In this case, the mode of driving support can be changed so that the alerting support is intentionally executed (so that the driving support level is raised) when the information providing support is executed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to perform the driving assistance which considered the driver driving | running | working characteristic of the other vehicle.

It is a block diagram of the driving assistance device concerning one embodiment of the present invention. It is a flowchart which shows the procedure of the process in the driving assistance device of FIG. It is a flowchart which shows the procedure of the comparison determination process of the driver driving | running | working characteristic in the driving assistance device of FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  FIG. 1 is a block diagram of a driving support apparatus according to an embodiment of the invention. As shown in FIG. 1, the driving support device 1 of the present embodiment is mounted on a host vehicle V and performs driving support when the host vehicle V turns left or right at an intersection and joins a priority road.

  The driving support device 1 includes a road-to-vehicle communication device 2, an inter-vehicle communication device 3, an information storage device 4, an information providing support unit 5, and an alerting support unit 6.

  The road-to-vehicle communication device 2 performs communication with a roadside device installed on the roadside. For example, an optical beacon or the like is used. The inter-vehicle communication device 3 transmits / receives information to / from other vehicles, and receives other vehicle information (described later) that is information related to the other vehicles. The information storage device 4 stores and stores the driver travel characteristics of the host vehicle V (hereinafter referred to as “host vehicle driver travel characteristics”). The “driver driving characteristics” of the present embodiment is a driving characteristic of the vehicle caused by the driver, and includes at least one of an average vehicle speed, an amount of change in acceleration / deceleration per unit time, and an average distance between vehicles with the preceding vehicle. It consists of

  The information provision support unit 5 is for executing information provision support for providing information related to the presence of another vehicle to the driver, for example, and recognizes the presence of the other vehicle. In addition, since the information provision support unit 5 here does not determine the safety of the merge, even when the driver receives the information provision support, the effect of guiding the merger to stop is low. .

  The alerting support unit 6 performs a collision determination between the host vehicle V and another vehicle, and performs alerting support that is performed when there is a high possibility of a collision if the host vehicle V continues driving as it is. It is. Note that this alerting support has a higher driving support level than the information providing support by the information providing support unit 5 described above.

  In addition, the driving support device 1 includes an ECU 7 that includes, for example, a CPU, a ROM, a RAM, and the like. The ECU 7 changes the driving assistance mode based on information related to the driver travel characteristics of the other vehicle (hereinafter referred to as “other vehicle driver travel characteristics”) (details will be described later). The ECU 7 includes a road-to-vehicle communication information processing unit 7a, another vehicle information processing unit 7b, a travel characteristic information processing unit 7c, a travel characteristic comparison processing unit 7d, and a driving support processing unit 7e.

  The road-to-vehicle communication information processing unit 7 a is connected to the road-to-vehicle communication device 2 and processes information acquired by the road-to-vehicle communication device 2. The other vehicle information processing unit 7 b is connected to the vehicle-to-vehicle communication device 3 and processes other vehicle information acquired by the vehicle-to-vehicle communication device 3. The travel characteristic information processing unit 7 c is connected to the information storage device 4 and performs processing of the host vehicle driver travel characteristics stored in the information storage device 4. The travel characteristic comparison processing unit 7d is connected to the other vehicle information processing unit 7b and the travel characteristic information processing unit 7c, and performs a comparison process of the host vehicle and other vehicle driver travel characteristics based on outputs from these. The driving support processing unit 7e is connected to the road-to-vehicle communication information processing unit 7a and the travel characteristic comparison processing unit 7d, and performs driving support processing based on outputs from these.

  Next, the process of the driving assistance device 1 described above will be described with reference to the flowcharts shown in FIGS.

  The processing of the driving assistance device 1 in this embodiment is driving assistance based on road-to-vehicle communication, that is, driving assistance that does not impede travel of other vehicles (priority vehicles) approaching the priority road (for example, left turn or right turn) The difference between the driving characteristics of the own vehicle driver and the driving characteristics of the other vehicle is interveningly incorporated into the support logic (providing the start timing). Specifically, the ECU 7 performs the following processing.

  That is, first, it is determined whether or not the host vehicle V is approaching an intersection joining the priority road based on information acquired by the navigation system or the road-to-vehicle communication device 2 mounted on the host vehicle V (S1). ). When the host vehicle V is approaching an intersection that joins the priority road, the other vehicle presence information related to “the presence of other vehicles on the priority road” detected by the vehicle detection camera or sensor installed on the priority road side is Obtained by the inter-vehicle communication device 2 (S2). On the other hand, when the own vehicle V is not approaching the intersection, the process is terminated as it is.

  Subsequently, after S2, when it is determined that another vehicle is present in the service provisionable area based on the other vehicle presence information, an information provision support flag that is a control factor of whether the information provision support unit 5 is operable is set. Turn on (S3 → S4). On the other hand, if such presence is not grasped, the process is terminated as it is.

  Subsequently, after S4, a driver travel characteristic comparison / determination process is executed (S5). When it is determined that the other vehicle driver travel characteristic is rougher than the own vehicle driver travel characteristic, the information providing support flag is turned OFF, and the attention support flag that is a control factor for whether or not the alert support unit 6 is operable is set. Set to ON (S6). As a result, the place where the information providing support is executed is changed so that the warning support is intentionally executed (so that the driving support level is raised). As a result, as the warning support by the warning support unit 6, For example, another vehicle is first guided through the intersection.

  On the other hand, when it is not determined that the other vehicle driver travel characteristic is rougher than the own vehicle driver travel characteristic, the information providing support flag is turned ON, and the attention support flag, which is a control factor of whether or not the alert support unit 6 is operable, is set. It is turned off (S7). Thereby, as usual, information providing support by the information providing support unit 5 that does not hinder the traveling of other vehicles is performed.

  Here, in the driver travel characteristic comparison determination process (S5), first, vehicle-to-vehicle communication device 3 acquires vehicle information of other vehicles and information related to other vehicle driver travel characteristics as other vehicle information (S11). Subsequently, the host vehicle driver travel characteristics stored in the information storage device 4 are compared with the other vehicle driver travel characteristics obtained in S11.

  Specifically, the average vehicle speed is compared between the host vehicle V and the other vehicle (S12). When the average vehicle speed of the own vehicle is smaller than the average vehicle speed of the other vehicle, the change amount per unit time of acceleration / deceleration (hereinafter referred to as “acceleration / deceleration change amount”) is compared between the own vehicle V and the other vehicle. (S13). When the acceleration / deceleration change amount of the own vehicle is smaller than the acceleration / deceleration change amount of the other vehicle, the inter-vehicle average distance with respect to the preceding vehicle is compared between the own vehicle V and the other vehicle (S14). If the inter-vehicle average distance of the own vehicle V is smaller than the inter-vehicle average distance of the other vehicle, it is determined that the roughness of the other vehicle driver travel characteristics is rougher than the roughness of the own vehicle driver travel characteristics (S15), and the process proceeds to S6. Is done.

  On the other hand, when the average vehicle speed of the own vehicle V is equal to or higher than the average vehicle speed of the other vehicle (NO in S12), the acceleration / deceleration change amount of the own vehicle V is equal to or more than the acceleration / deceleration change amount of the other vehicle (NO in S13). ), And when the average inter-vehicle distance of the host vehicle V is equal to or greater than the average inter-vehicle distance of the other vehicle (NO in S14), it is determined that the roughness of the other vehicle driver travel characteristics is not rougher than the roughness of the own vehicle driver travel characteristics. (S16). And other vehicle information is discarded (S17) and it transfers to the process of said S6.

  The comparison determination process in S5 is substantially performed at the same time as the processes in S1 to S4.

As described above, in the present embodiment, information related to the other vehicle driver travel characteristics is acquired, and the driving support mode is changed based on the information related to the driver travel characteristics. Therefore, driving assistance considering the other vehicle driver driving characteristics can be executed, and safe driving can be further performed.

  As a result, since the own vehicle driver travel characteristic and the other vehicle driver travel characteristic are different from each other, the driver of the own vehicle V and the other vehicle can be prevented from feeling uncomfortable, and the following problems can be suppressed. That is, when the own vehicle V joins the front side of the other vehicle, the other vehicle is forced to travel in accordance with the traveling of the own vehicle V, and consequently the traveling of the other vehicle is hindered. Can be suppressed.

  Further, in the present embodiment, as described above, the driving assistance mode is changed according to the roughness of the other vehicle driver traveling characteristics, and when the other vehicle driver traveling characteristics are rough, for example, the driving assistance is performed so that the other vehicle passes first. Has been done. Therefore, it is possible to prevent the host vehicle V from being hit or overtaken by another vehicle after joining the priority road, and the driver of the host vehicle V can also be prevented from causing driver distraction.

  In the present embodiment, it can be said that not only the relative distance and relative speed between the host vehicle V and the other vehicle but also the driving characteristics of the driver can be taken into account, and the road shape of the land around the intersection can be considered. It can be said that it does not depend. Incidentally, although it is possible to directly notify the driver of the own vehicle V that another vehicle is approaching the aggressive driver, the driver can easily accept the approach of the other vehicle if the alerting support is provided.

  As mentioned above, although preferred embodiment of this invention was described, the drive assistance apparatus which concerns on this invention is not restricted to the said drive assistance apparatus 1 which concerns on embodiment, The range which does not change the summary described in each claim It may be modified by or applied to others.

  For example, in the above-described embodiment, the driver travel characteristics may include the number of times the scooping action or overtaking action is performed. In the above, the inter-vehicle communication device 3 and the ECU 7 constitute driving characteristic acquisition means, the ECU 7 constitutes driving assistance mode changing means, and the information provision assistance unit 5 and the alert assistance unit 6 constitute driving assistance execution means. To do.

DESCRIPTION OF SYMBOLS 1 ... Driving assistance apparatus, 3 ... Inter-vehicle communication apparatus (driving characteristic acquisition means), 5 ... Information provision assistance unit (driving assistance execution means), 6 ... Attention assistance unit (driving assistance execution means), 7 ... ECU (running) Characteristic acquisition means, driving support mode change means) V ... own vehicle

Claims (4)

When the host vehicle joins the priority road, the driving support device performs driving support for the host vehicle based on information on the other vehicle traveling on the priority road,
Driving characteristic acquisition means for acquiring information relating to driver driving characteristics of the other vehicle;
Driving support execution means for executing the driving support;
Driving assistance mode change means for changing the mode of driving assistance performed by the driving assistance execution means based on information on the driver running characteristics acquired by the driving characteristic acquisition means; apparatus.   The driving support device according to claim 1, wherein the driver travel characteristic is at least one of an average vehicle speed, an amount of change in acceleration / deceleration, and an inter-vehicle distance from a preceding vehicle.   The driving support device according to claim 1, wherein the driving support mode changing unit changes the mode of the driving support according to roughness of the driver travel characteristic of the other vehicle. The driving support apparatus according to any one of claims 1 to 3, wherein the driving support mode changing unit changes the mode of the driving support between information providing support and alerting support.

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