JP2009075856A - Information presentation device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information presentation device for a vehicle, for presenting a vehicle group liable to be overlooked from one's own vehicle based on information on the own vehicle and information on a peripheral vehicle. <P>SOLUTION: The information presenting device 10 for the vehicle is provided with: an own vehicle information acquisition part 11 for acquiring the information on the own vehicle; a peripheral vehicle information acquisition part 12 for acquiring the information on the peripheral vehicle of the own vehicle; a vehicle group formation part 13 for forming a vehicle group configured of at least one peripheral vehicle based on the information on the peripheral vehicle acquired by the peripheral vehicle information acquisition part 12; an attention object vehicle group extraction part 15 for extracting an attention object vehicle group to which attention should be paid based on the information on the own vehicle acquired by the own vehicle information acquisition part 11 and the vehicle group formed by the vehicle group formation part 13; a support vehicle group specification part 17 for specifying a vehicle group whose conspicuousness level is the lowest from among the attention object vehicle groups extracted by the attention object vehicle group extraction part 15 as the support vehicle group to which the information should be presented; and an information presenting part 18 for presenting the information on the support vehicle group specified by the support vehicle group specification part 17 to the driver of the own vehicle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle information presentation device that presents a group of vehicles that are easily overlooked from the host vehicle based on information about the host vehicle and surrounding vehicles.

  From the viewpoint of preventing accidents, in order to inform the driver of the situation of the surrounding vehicles of the own vehicle, information (information 1) about how much the vehicle is in which direction and the vehicle to which more attention should be given. It is considered effective to present two types of information (information 2) as to which is. Further, regarding the information 2, the vehicle to which attention should be paid differs depending on whether the surrounding vehicle is visually recognized (difficult to see, easy to see).

  Specifically, in situations where it is difficult to see the presence of surrounding vehicles, it is effective to direct attention to vehicles with a high risk of accidents, and in situations that are easy to see, it is effective to direct attention to vehicles that are not noticeable (easy to overlook). . This is because, under easy-to-see conditions, there is a case in which an accident occurs because a vehicle with a high degree of conspicuousness (which is easily noticeable) is naturally attracted, and a vehicle with a low degree of conspicuousness is overlooked. It is because it is thought that there are many.

  Conventionally, as a device for presenting information for preventing accidents, a first approach is to group neighboring vehicles approaching an intersection according to the time to reach the vicinity of the host vehicle and the approach direction, and group by arrival time. There is known a vehicle information processing apparatus (for example, see Patent Document 1) that presents information using a voice for a group and using a display for a second group grouped in an approach direction. Yes. This information processing apparatus for a vehicle presents information in an easy-to-understand manner by alerting directly by voice and indirectly by display how much the vehicle group is coming from which direction.

In addition, information on surrounding vehicles that are expected to have an impact on the driving of the host vehicle is extracted as vehicle group information, and a display suitable for the vehicle group is also displayed for the vehicle group that is expected to have more influence. There is also known a dangerous vehicle information provision device (see, for example, Patent Document 2) that provides information by using the above. This dangerous vehicle information providing device determines whether the vehicle group is more influential based on the type of vehicle group and the moving speed.
JP 2002-326549 A JP 2003-44994 A

  However, the vehicle information processing apparatus of Patent Document 1 presents the above information 1 in an easy-to-understand manner, that is, how much the vehicle group comes from which direction, that is, the information 2 is not presented. There is a point.

  Moreover, although the dangerous vehicle information provision apparatus of patent document 2 selects the vehicle group which should show information from the surrounding vehicle groups, and shows the information 1 and the information 2, the vehicle group which should show information A vehicle group with a high risk of collision is selected. Therefore, there is a problem that a vehicle group focusing on ease of oversight is not presented.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle information presentation device that presents a group of vehicles that are easily overlooked from the own vehicle based on information on the own vehicle and surrounding vehicles. And

  In order to achieve the above object, the vehicle information presentation device according to claim 1 is a host vehicle information acquisition unit that acquires information of the host vehicle, and a peripheral vehicle information acquisition unit that acquires information of surrounding vehicles of the host vehicle. And vehicle group forming means for forming a vehicle group consisting of at least one peripheral vehicle based on information on the surrounding vehicles acquired by the surrounding vehicle information acquiring means, and the vehicle information acquiring means acquired by the own vehicle information acquiring means Based on the information on the host vehicle and the vehicle group formed by the vehicle group formation unit, the attention object vehicle group extraction unit that extracts the attention object vehicle group to which attention should be paid is extracted by the attention object vehicle group extraction unit. The vehicle group specifying means for specifying the vehicle group having the lowest conspicuousness among the target vehicle groups as the support vehicle group for which information should be presented, and the information on the support vehicle group specified by the support vehicle group specifying means The own vehicle Includes a information presentation means to be presented to the driver, the.

  According to the invention described in claim 1, since the presence of the vehicle group having the lowest degree of conspicuousness from the vehicle group around the own vehicle, that is, the vehicle group that is most easily overlooked is presented, an accident with an oversight partner is prevented in advance. Is possible.

  The vehicle information presentation device according to claim 2 is extracted by the vehicle information presentation device according to claim 1 by the information on the host vehicle acquired by the host vehicle information acquisition unit and the attention target vehicle group extraction unit. A visual status determination unit that determines a visual status of the caution target vehicle group from the host vehicle based on the caution target vehicle group, and the support vehicle group specifying unit is configured to detect the visual status by the visual status determination unit. When it is determined to be good, the vehicle group having the lowest conspicuousness among the attention target vehicle group is identified as the support vehicle group, and when the visual recognition state determination unit determines that the visual recognition state is poor, the attention target vehicle The vehicle group with the highest risk of accident is identified as the support vehicle group.

  According to the invention described in claim 2, in order to identify the lowest conspicuous vehicle group or the most dangerous vehicle group as the support vehicle group in accordance with the visibility of the host vehicle, it depends on the situation. Appropriate information can be presented.

  The vehicle information presentation device according to claim 3 is the vehicle information presentation device according to claim 1 or 2, wherein the caution target vehicle group extraction means determines the position of the own vehicle by the own vehicle information acquisition means. When the right turn information is acquired by the own vehicle information acquisition means within the predetermined distance before the intersection, the oncoming lane side vehicle group is extracted as the caution target vehicle group, and the right turn information is not acquired The vehicle group on the crossing road side is extracted as the vehicle group to be noted.

  According to the third aspect of the present invention, appropriate information can be presented depending on whether or not the host vehicle turns right.

  The vehicle information presentation device according to claim 4 is the vehicle information presentation device according to any one of claims 1 to 3, wherein the information presentation means includes the support vehicle group and the attention target vehicle group. Each is presented in a different display format.

  According to the fourth aspect of the present invention, the support vehicle group can be emphasized and presented separately from the other attention target vehicle groups.

  As described above, according to the present invention, since a group of vehicles that are easily overlooked from the own vehicle is presented based on the information on the own vehicle and the surrounding vehicles, it is possible to prevent an accident with an oversight partner. It is done.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a functional block diagram of a vehicle information presentation device 10 according to an embodiment of the present invention. As shown in FIG. 1, the vehicle information presentation device 10 includes a host vehicle information acquisition unit 11, a surrounding vehicle information acquisition unit 12, a vehicle group formation unit 13, a map database 14, and a caution target vehicle group extraction unit 15. A visual recognition state determination unit 16, a support vehicle group identification unit 17, and an information presentation unit 18.

  The own vehicle information acquisition unit 11 acquires information such as a position of the own vehicle, a traveling direction, a vehicle speed, direction indicator information, and a front image. As for the position and the traveling direction, the map database 14 is referred to from the latitude / longitude information obtained from the GPS vehicle-mounted device, and the traveling road and the traveling direction on the road are specified. The vehicle speed and direction indicator information are acquired by an in-vehicle sensor, and the front image is acquired by an in-vehicle camera. The own vehicle information is measured and updated at regular intervals (T1 [seconds]).

  The surrounding vehicle information acquisition unit 12 acquires information such as the position, traveling direction, vehicle speed, and the like of vehicles existing around the host vehicle. The vehicle speed and latitude / longitude information of the vehicle is measured by an in-vehicle sensor or a GPS in-vehicle device installed in the surrounding vehicle and transmitted by inter-vehicle communication. The surrounding vehicle information acquisition part 12 receives these information by vehicle-to-vehicle communication. These pieces of surrounding vehicle information are measured and updated at regular intervals (T2 [seconds]).

  The vehicle group formation unit 13 groups the surrounding vehicles that travel together to some extent using the surrounding vehicle information obtained by the surrounding vehicle information acquisition unit 12. In addition, a vehicle group ID is assigned to the vehicle group formed by grouping, and information on the vehicle speed and position of the first vehicle in the vehicle group, the distance from the first vehicle to the last vehicle and the number of vehicles (hereinafter “vehicle group information”). Is stored for each vehicle group ID.

  The map database 14 is a map provided in the car navigation device, and holds electronic map information including a road structure.

  The caution target vehicle group extraction unit 15 detects the vehicle information obtained by the vehicle information acquisition unit 11 and the vehicle group formation unit 13 when the position of the vehicle is within a predetermined distance (X1 [m]) before the intersection. The vehicle group that should pay attention to the traveling of the host vehicle is extracted using the vehicle group information obtained by the above. The attention target vehicle group extraction unit 15 stores the vehicle group information of the extracted attention target vehicle group. Note that the caution target vehicle group is limited to a vehicle group within a predetermined time (T4 [seconds]) until reaching the intersection.

  The visual recognition status determination unit 16 uses the host vehicle information obtained by the host vehicle information acquisition unit 11 and the caution target vehicle group information extracted by the caution target vehicle group extraction unit 15 to view the caution target vehicle. Judge whether the line of sight is good or bad. In the determination of whether the line of sight is good or bad, the forward video acquired by the host vehicle information acquisition unit 11 is image-processed. When the caution target vehicle group can be confirmed, it is determined that the line of sight is good, and when the vehicle cannot be confirmed, the line of sight is poor.

  The support vehicle group identification unit 17 is determined by the host vehicle information obtained by the host vehicle information acquisition unit 11, the attention target vehicle group information extracted by the attention target vehicle group extraction unit 15, and the visual recognition state determination unit 16. A support vehicle group is specified using the visual recognition status determination result. If the visibility judgment result is good outlook, the least conspicuous (easy to be overlooked) vehicle group is identified as the support vehicle group, and if the visibility is poor, The vehicle group with the highest risk of accident is identified as the support vehicle group.

  The information presentation unit 18 presents information to the driver of the host vehicle using the attention target vehicle group extracted by the attention target vehicle group extraction unit 15 and the support vehicle group specified by the support vehicle group specification unit 17. .

  Next, the flow of the operation of the vehicle information presentation device 10 according to the present embodiment will be described with reference to the flowchart shown in FIG. In the present embodiment, assuming a right turn scene at a signalized intersection, the operation in such a scene will be described in detail.

  First, in step 100, the host vehicle information acquisition unit 11 acquires information such as the position of the host vehicle, the traveling direction, the vehicle speed, direction indicator information, and a front image.

  In step 102, the surrounding vehicle information acquisition unit 12 acquires information such as the position, traveling direction, and vehicle speed of the surrounding vehicle.

  In step 104, the vehicle group formation unit 13 forms a vehicle group based on the surrounding vehicle information. When forming a vehicle group, when the distance from the nearest vehicle is within a predetermined time (T3 [seconds]) with respect to neighboring vehicles traveling in the same direction on the same road, To do. Here, the inter-vehicle time is a value obtained by dividing the distance between the vehicles by the vehicle speed of the rear vehicle. The minimum unit of the vehicle group is one. Therefore, a vehicle in which there is no vehicle having a distance within a predetermined inter-vehicle time around is treated as one vehicle group.

  FIG. 3 shows an example of formation of a vehicle group. In FIG. 3A, the surrounding vehicles 21 to 24 are traveling in the same direction with respect to the host vehicle 20 turning right at the intersection. The inter-vehicle time between the surrounding vehicles is calculated. If the inter-vehicle time between the peripheral vehicle 21 and the peripheral vehicle 22 and the inter-vehicle time between the peripheral vehicle 22 and the peripheral vehicle 23 are within T3 seconds, the same vehicle group is obtained. If the inter-vehicle time of 24 exceeds T3 seconds, it is determined as another vehicle group. In this way, as shown in FIG. 3B, a vehicle group 31 composed of three peripheral vehicles 21 to 23 and a vehicle group 32 composed of one peripheral vehicle 24 are formed.

  In step 106, the caution target vehicle group extraction unit 15 determines whether or not the position of the host vehicle 20 is before the intersection. FIG. 4 is a diagram illustrating the positional relationship between the intersection and the host vehicle 20. Whether or not the host vehicle 20 is in front of the intersection is determined by whether or not the tip of the host vehicle 20 is within a predetermined distance (X1 [m]) before the intersection. If it is within the predetermined distance, it is determined that it is before the intersection, and the routine proceeds to step 108. If it is not within the predetermined distance, it is determined that it is not before the intersection, information is not presented, and the process returns to step 100 to repeat the above processing.

  In step 108, the time required for the attention target vehicle group extraction unit 15 to reach the intersection from the vehicle groups formed by the vehicle group formation unit 13 is within T4 seconds, and attention is paid to the traveling of the host vehicle 20. The target vehicle group to pay attention to is extracted.

  In step 110, the attention target vehicle group extraction unit 15 determines whether or not the attention target vehicle group exists, that is, whether or not the attention target vehicle group is extracted in step 108. When the attention target vehicle group is extracted, the process proceeds to step 112, and when it is not extracted, the information is not presented, and the process returns to step 100 to repeat the above process.

  In step 112, the caution target vehicle group extraction unit 15 determines whether or not there are a plurality of caution target vehicle groups extracted in step 108. If there are a plurality of caution target vehicle groups, the process proceeds to step 114.

  In step 114, the attention target vehicle group extraction unit 15 determines whether the right direction indicator of the host vehicle 20 is lit based on the direction indicator information acquired by the host vehicle information acquisition unit 11, that is, a right turn signal. It is determined whether or not there is. When there is a right turn signal, the process proceeds to step 116, and when there is no right turn signal, the process proceeds to step 118.

  In step 116, the caution target vehicle group extraction unit 15 determines that the host vehicle 20 has an intention to turn right at the intersection. In this case, the attention target vehicle group extraction unit 15 sets the specific area 41 on the opposite lane shown in FIG. 4 as an area for extracting the attention target vehicle group, and sets the vehicle group in this area as the attention target vehicle group.

  In step 118, the caution target vehicle group extraction unit 15 determines that the host vehicle 20 has an intention to go straight through the intersection. In this case, the attention target vehicle group extraction unit 15 sets a vehicle group on the cross road side that travels in a direction approaching the intersection as the attention target vehicle group.

  In step 120, the visual recognition status determination unit 16 determines whether the line of sight in the direction in which the attention target vehicle group is present as viewed from the host vehicle 20 is good or bad. If the line of sight is good, the process proceeds to step 122. Proceed to 124.

  In step 122, the support vehicle group identification unit 17 identifies the vehicle group having the lowest conspicuousness (easy to be overlooked) as the support vehicle group. This is because when the driver tries to recognize a vehicle in the opposite lane in a good-looking situation, the oncoming vehicle traveling in a group of several vehicles is more aware than the oncoming vehicle traveling alone. Cheap. When there are a plurality of vehicle groups that have to be recognized in this manner and the degree of conspicuousness (ease of recognition) is different, it is easy to be distracted by a vehicle group with high conspicuousness (easy to be noticed). As a result, there is a case where a vehicle group with a low degree of conspicuousness (easy to be overlooked) leads to an accident without being noticed.

  The conspicuousness of the vehicle group is defined by the size [m] of the vehicle group and the vehicle density [vehicles / m]. The size [m] of the vehicle group is the distance from the first vehicle to the last vehicle in the vehicle group. Further, the vehicle density [units / m] of the vehicle group is defined as the number of vehicle groups [units] ÷ the size of the vehicle group [m]. FIG. 5 shows that the size of the vehicle group is set to two levels of “large” and “small” when the vehicle group size is less than or equal to a predetermined value Y [m], and the vehicle density of the vehicle group is less than or equal to a predetermined value Z [vehicle / m]. It is a table with two levels of “high” and “low”.

  The conspicuousness of the vehicle group is determined based on FIG. As shown in FIG. 6, when the vehicle density of the vehicle group is higher, the degree of conspicuousness is higher and the vehicle density level is the same based on the size of the vehicle group and the level of vehicle density set in FIG. It is determined that the degree of conspicuousness increases as the size of the vehicle group increases. Further, when the vehicle group is composed of one vehicle, the degree of conspicuousness is the lowest.

  The support vehicle group identification unit 17 thus determines the degree of conspicuousness of each attention target vehicle group, and identifies the vehicle group having the lowest degree of conspicuity as the support vehicle group. However, when there are a plurality of vehicle groups having the lowest degree of conspicuousness, the vehicle group having the highest degree of danger described later is set as the support vehicle group.

  FIG. 7 shows a group of vehicles that are easily overlooked under good visibility. In FIG. 2A, there are two caution target vehicle groups 51 and 52 as viewed from the host vehicle 20. In this case, the attention target vehicle group 51 composed of three vehicles closer to the host vehicle 20 has the highest degree of conspicuousness, and the attention target vehicle group 52 composed of one rear vehicle has the lowest degree of conspicuousness. Therefore, the rear caution target vehicle group 52 is determined as the support vehicle group.

  In FIG. 5B, there are two vehicle groups 53 and 54 to be watched as viewed from the host vehicle 20. In this case, the attention target vehicle group 54 including three vehicles farther from the host vehicle 20 has the highest degree of conspicuousness, and the attention target vehicle group 53 including one vehicle in front of the attention vehicle group 54 has the lowest conspicuousness degree. Therefore, the front caution target vehicle group 53 is determined as the support vehicle group.

  On the other hand, in step 124, the support vehicle group identification unit 17 identifies a vehicle group having the highest risk of accident among the attention target vehicle groups as the support vehicle group.

  Here, the risk of accidents is defined by the arrival time [seconds] from the attention target vehicle group to the position of the host vehicle 20. This arrival time [second] is the distance [m] between the host vehicle 20 and the first vehicle in the attention target vehicle group divided by the vehicle speed [m / second] of the first vehicle in the vehicle group. The caution target vehicle group with the shortest arrival time is set as the vehicle group with the highest degree of danger and is set as the support vehicle group.

  Finally, in step 126, the information presenting unit 18 presents information to the driver together with the attention target vehicle group and the support vehicle group if there is a support vehicle group. Information presentation is performed by, for example, displaying the information on a display device such as a sub-display installed around the instrument panel.

  FIG. 8 shows an example in which information is presented on the display device. Along with the host vehicle 20 turning right at the intersection, a caution target vehicle group 61 and a support vehicle group 62 are displayed. In this way, when both the support vehicle group 62 and the other attention target vehicle group 61 are displayed, the support vehicle group 62 is displayed more prominently as a different mode such as color emphasis. Thus, the driver can be surely notified of the presence of the support vehicle group 62.

  As described above, the vehicle information presentation apparatus 10 according to the present embodiment identifies a vehicle group with low conspicuousness (easy to be overlooked) and informs the driver of the presence of the vehicle group, thereby causing an accident with an oversight partner. Can be prevented.

  In addition, this invention is not limited to embodiment mentioned above, It can apply also to what changed the design within the range described in the claim.

1 is a functional block diagram of a vehicle information presentation device 10 according to an embodiment of the present invention. It is a flowchart which shows the flow of control which concerns on embodiment of this invention. It is a figure which shows an example of formation of a vehicle group. It is a figure which shows the positional relationship of an intersection and the own vehicle. It is the table | surface which set the size and vehicle density of a vehicle group in two levels. It is a table | surface which shows the relationship between the size of a vehicle group, vehicle density, and conspicuousness. It is a figure which shows the vehicle group which is easy to be overlooked under the condition with a good view. It is a figure which shows the example which presented information on the display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle information presentation apparatus 11 Own vehicle information acquisition part 12 Surrounding vehicle information acquisition part 13 Vehicle group formation part 14 Map database 15 Attention object vehicle group extraction part 16 Visual recognition condition determination part 17 Support vehicle group specification part 17 Support vehicle group specification part 18 Information presentation section

Claims (4)

Own vehicle information acquisition means for acquiring information of the own vehicle;
Surrounding vehicle information acquisition means for acquiring information on surrounding vehicles of the host vehicle;
Vehicle group formation means for forming a vehicle group composed of at least one peripheral vehicle based on information on the peripheral vehicle acquired by the peripheral vehicle information acquisition means;
Attention target vehicle group extraction means for extracting the attention target vehicle group to which attention should be paid based on the information on the own vehicle acquired by the own vehicle information acquisition means and the vehicle group formed by the vehicle group formation means; ,
Assistance vehicle group identification means for identifying a vehicle group having the lowest conspicuousness among the attention object vehicle groups extracted by the attention object vehicle group extraction means, as a support vehicle group for which information should be presented;
Information presenting means for presenting information on the support vehicle group specified by the support vehicle group specifying means to the driver of the host vehicle;
An information presentation device for a vehicle comprising: Based on the information on the own vehicle acquired by the own vehicle information acquisition means and the attention target vehicle group extracted by the attention target vehicle group extraction means, the visibility state of the attention target vehicle group is determined from the own vehicle. Further provided with a visual status determination means,
The assisting vehicle group identification means identifies the vehicle group having the lowest conspicuousness among the attention target vehicle groups as the assisting vehicle group when the visual recognition state determination unit determines that the visual recognition state is good, and the visual recognition state The vehicle information presentation device according to claim 1, wherein when the determination unit determines that the visual recognition state is poor, the vehicle group having the highest risk of accident among the caution target vehicle group is specified as the support vehicle group.   The caution target vehicle group extraction unit is configured to detect the right turn information when the host vehicle information acquisition unit acquires a right turn information when the host vehicle position is within a predetermined distance before the intersection. The vehicle information presentation according to claim 1 or 2, wherein a vehicle group on the lane side is extracted as a caution target vehicle group, and a vehicle group on the cross road side is extracted as a caution target vehicle group when right turn information is not acquired. apparatus.   4. The vehicle information presentation device according to claim 1, wherein the information presentation unit presents the support vehicle group and the attention target vehicle group in different display forms. 5.