JP2015118053A - Driving support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have a user be capable of receiving guidance taking into consideration the traffic amount in an opposite lane of object vehicle in a navigation function used in the object vehicle.SOLUTION: A driving support device includes: a position determination unit 67 for determining whether or not an object facility is in a position across an opposite lane from own vehicle by a present position specified by a position specifying unit 64, the object facility acquired by an object facility acquirement unit, and map data acquired by a map data acquirement unit; a traffic amount determination unit 68 for determining whether or not the traffic amount in the lane opposite from own vehicle in the periphery of the object facility is more than a prescribed amount from the traffic amount in the opposite lane from own vehicle acquired by a traffic amount acquirement unit 63; and a change instruction unit 69 for instructing a search unit 586 to search for a facility in the same group as the object facility when the object facility is determined to be in the position across the opposite lane by the position determination unit 67 as well as having the traffic amount in the opposite lane from own vehicle in the periphery of the object facility be more than the prescribed amount by the traffic amount determination unit 68.

Description

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

  Conventionally, a technique for monitoring traffic information of an oncoming lane is known. For example, in Patent Document 1, the vehicle-mounted device detects the position of the end of the traffic jam from the state of the oncoming lane captured by the camera and the own vehicle position, and transmits the detected position to the traffic information device. A technique for updating traffic information based on information transmitted from the Internet is disclosed. In the technology disclosed in Patent Document 1, traffic information transmitted from the traffic information device is displayed on the vehicle-mounted device.

JP 2004-227399 A

  However, the technique disclosed in Patent Document 1 has a problem in that a malfunction occurs in a navigation function used in a target vehicle (hereinafter referred to as a target vehicle). Details are as follows. In the technology disclosed in Patent Document 1, since only the traffic information of the oncoming lane of the target vehicle is displayed, in the navigation function used in the target vehicle, when a facility as a destination or waypoint is set, There are cases where a facility that cannot be visited unless it crosses an opposite lane with a large amount of traffic is set. In such a case, there is a problem that the oncoming lane cannot be crossed, and the user cannot stop at the set facility or it is difficult to stop.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to enable a user to receive guidance in consideration of the traffic volume in the opposite lane of the target vehicle in the navigation function used in the target vehicle. The object is to provide a driving support device.

  The driving support apparatus of the present invention is a driving support apparatus (4) including a traffic volume acquisition unit (63) that acquires the traffic volume of an opposite lane of a target vehicle that is a target vehicle, and the current position of the target vehicle is determined. A location specifying unit (64) for specifying, a target facility acquiring unit (65) for acquiring a target facility that is one of the destinations and waypoints set in the navigation function used in the target vehicle, and a plurality of roads A map data acquisition unit (66) for acquiring map data including road data indicated by links and nodes and facility data indicating the location of the facility, the current location specified by the location specifying unit, and the target facility acquisition unit A position determination unit (67) for determining whether the target facility is in a position across the opposite lane for the target vehicle from the acquired target facility and the map data acquired by the map data acquisition unit; A traffic volume determination unit (68) for determining whether the traffic volume in the opposite lane of the target vehicle around the target facility is greater than or equal to a predetermined amount from the traffic volume in the opposite lane of the target vehicle acquired by the acquisition unit, and a position determination unit To urge the target facility to change when it is determined that the target facility is in a position across the opposite lane and the traffic volume determination unit determines that the traffic volume in the opposite lane of the target vehicle around the target facility is equal to or greater than the predetermined amount And a change instructing unit (69) for performing the above process.

  According to this, the position determination unit determines that the target facility is located across the opposite lane for the target vehicle, and the traffic determination unit determines that the traffic volume in the opposite lane of the target vehicle around the target facility is equal to or greater than the predetermined amount. If it is determined, the target facility set in the navigation function is prompted to change. Therefore, by prompting the change, it is possible to newly set a facility in the navigation function that can stop without straddling the oncoming lane with a large amount of traffic. As a result, in the navigation function used in the target vehicle, the user can receive guidance in consideration of the traffic volume in the opposite lane of the target vehicle.

1 is a diagram illustrating an example of a schematic configuration of a driving support system 100. FIG. 3 is a block diagram illustrating an example of a schematic configuration of a driving support unit 4. FIG. 2 is a block diagram illustrating an example of a schematic configuration of a control device 58 in Embodiment 1. FIG. It is a block diagram which shows an example of a schematic structure of the oncoming lane monitoring apparatus. FIG. 10 is a sequence diagram illustrating an example of a flow of processing related to resetting of a target facility in the driving support unit 4. It is a figure which shows the example of a display of the mark which shows the position of the nearest left side facility. It is a figure which shows the example of a display of the mark which shows the position of the nearest right side facility. It is a figure which shows the example of a display of the mark which shows the position of both the nearest left side facility and the nearest right side facility. It is a block diagram which shows an example of a schematic structure of the control apparatus 58a in Embodiment 2. FIG. It is a figure which shows the example of a display of the mark which shows the area where the traffic volume of the opposite lane of the own vehicle is less than predetermined amount.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiment shown below is an embodiment corresponding to an area where the left-hand traffic is legalized, and in the area where the right-hand traffic is legalized, the left and right are reversed from the following embodiments.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
<Driving support system 100>
FIG. 1 is a diagram illustrating an example of a schematic configuration of a driving support system 100 to which the present invention is applied. A driving support system 100 shown in FIG. 1 includes a front monitoring camera 2, a communication device 3, and a driving support unit 4 used in each of a plurality of vehicles, and a traffic information center 1 provided outside the vehicle. .

<Traffic Information Center 1>
The traffic information center 1 is a base station placed on the ground, and is also a traffic information processing apparatus configured from a server. The traffic information center 1 may be composed of a single server or may be composed of a plurality of servers. The traffic information center 1 communicates with the communication device 3 via, for example, a network (that is, a communication network). The traffic information center 1 stores traffic information and periodically distributes the traffic information.

  Moreover, the traffic information center 1 acquires the information for updating traffic information from an information source, and stores the newest traffic information, in order to update the stored traffic information. In addition, what is necessary is just to set it as the structure connected between the traffic information center 1 and the information source so that information communication is possible via a communication system. The traffic information includes the traffic volume for each link having a different link direction. That is, it is assumed that the traffic information includes the traffic volume in the forward and reverse directions for one road section.

  As an information source, an information terminal installed in another traffic information center or vehicle can be used. The information terminal provides probe information indicating the traveling state of the vehicle such as the current position, speed, acceleration / deceleration, and traveling locus of the vehicle on which the information terminal is mounted. For example, the traffic information center 1 may be configured to acquire probe information provided from the oncoming lane monitoring device 6 described later via the communication device 3 as information for updating the traffic information. In the first embodiment, a case where the traffic information center 1 acquires probe information from the oncoming lane monitoring device 6 will be described as an example. The probe information reported from the oncoming lane monitoring device 6 will be described in detail later.

<Front surveillance camera 2>
The front monitoring camera 2 is installed in the host vehicle and images a region that extends in a predetermined angle range in front of the host vehicle. The front monitoring camera 2 is set so that the imaging range is up to the adjacent lane adjacent to the traveling lane of the host vehicle.

<Communicator 3>
The communication device 3 communicates with the traffic information center 1 via a network. For example, the communication device 3 is connected to the network via wireless communication. As the communication device 3, for example, a DCM (data communication module) used for telematics communication, a module used for road-to-vehicle communication, or the like may be used. The communication device 3 receives traffic information that is regularly distributed from the traffic information center 1.

<Driving support unit 4>
Then, the schematic structure of the driving assistance unit 4 is demonstrated using FIG. FIG. 2 is a diagram illustrating an example of a schematic configuration of the driving support unit 4. As shown in FIG. 2, the driving support unit 4 includes a navigation device 5 and an oncoming lane monitoring device 6. This driving support unit 4 corresponds to the driving support device of the claims.

<Navigation device 5>
Here, a schematic configuration of the navigation device 5 will be described. The navigation device 5 is used in a vehicle and has a navigation function for setting a destination, searching for a recommended route to the destination, and guiding a recommended route. The navigation device 5 may be a vehicle-mounted device, a portable terminal that can be brought into a vehicle, or a part of the processing performed by a server. Hereinafter, a vehicle in which the navigation device 5 is used is called a host vehicle.

  As shown in FIG. 2, the navigation device 5 is connected to the oncoming lane monitoring device 6, and includes a position detector 51, a map database (DB) 52, a display device 53, an audio output device 54, an operation switch group 55, a remote switch A control terminal (hereinafter referred to as remote control) 56, a remote control sensor 57, and a control device 58 are provided.

  The position detector 51 is based on information obtained from a GPS receiver for GPS (Global Positioning System) that detects the current position of the vehicle (hereinafter referred to as vehicle position) based on radio waves from the satellite. Are sequentially detected. The vehicle position is represented by, for example, latitude / longitude coordinates. The position detector 51 may be configured to use a sensor other than the GPS receiver for detecting the vehicle position. Moreover, in this embodiment, it is good also as a structure which uses the receiver of satellite positioning systems other than GPS instead of a GPS receiver.

  The map DB 52 stores map data including road data composed of node data and link data, POI (Points Of Interest) data of various facilities, and the like. A link is a link between nodes when each road on the electronic map is divided by a plurality of nodes such as intersections, branches, and joining points.

  The link data includes a unique number (link ID) for identifying the link, a link length indicating the link length, a link direction, link shape information, node coordinates (latitude / longitude) between the start and end of the link, and road attributes. It consists of each data. The road attributes include road name, road type, road width, number of lanes, presence / absence of right / left turn dedicated lane, number of dedicated lanes, speed regulation value, and the like.

  On the other hand, the node data includes a node ID, a node coordinate, a node name, a node type, a link ID of a link connected to the node, an intersection type, and an intersection. Is composed of data such as the presence / absence of a traffic light, the center coordinates of the intersection, and the presence / absence of temporary stop restrictions.

  The POI data is data indicating the name, address, position, and attribute of the facility. The POI data corresponds to the facility data in the claims. The POI position data is, for example, coordinates represented by latitude / longitude. The POI attribute data is data representing the type of facility. As an example of the type of facility, there are restaurants, clothing stores, general stores, florists, beauty-related stores, and the like. In addition, as the types of restaurants further subdivided, there are store types such as family restaurants, luxury restaurants, cafes, izakayas, fast food restaurants, etc., and different types of dishes for each type of food handled. Facilities other than stores include gas stations, coin parking, stations, movie theaters, museums, and medical facilities.

  The map data stored in the map DB 52 may be acquired by the control device 58 by downloading it from a center (not shown) or may be stored in advance. The map DB 52 may be configured to use a storage medium such as a memory card or HDD, for example.

  The display device 53 is capable of full color display, for example, and can be configured using a liquid crystal display or the like. The voice output device 54 includes a speaker or the like, and outputs a guidance voice or the like based on an instruction from the control device 58.

  For example, a touch switch or a mechanical switch integrated with the display device 53 is used as the operation switch group 55, and an operation instruction for various functions is given to the control device 58 by the switch operation. In the first embodiment, the operation switch group 55 will be described below with an example in which the operation switch group 55 is a touch switch integrated with the display device 53.

  The remote control 56 is provided with a plurality of operation switches (not shown). By inputting various command signals to the control device 58 via the remote control sensor 57 by the switch operation, the same function as the operation switch group 55 is provided. Can be executed.

  The control device 58 is mainly composed of a microcomputer comprising a CPU, ROM, RAM, backup RAM, and the like. Then, the control device 58 performs a navigation function by the CPU executing a program stored in advance in the ROM based on various information input from the position detector 51, the map DB 52, the operation switch group 55, and the remote control sensor 57. Various processes related to are executed.

  As shown in FIG. 3, the control device 58 includes a target facility setting unit 581, a route search unit 582, a route guidance unit 583, a notification processing unit 584, an instruction reception processing unit 585, a search unit 586, a first extraction unit 587, 2 extraction part 588, the 1st presentation process part 589, and the 2nd presentation process part 590 are provided.

  The target facility setting unit 581 sets a destination facility (hereinafter referred to as a target facility). The target facility set by the target facility setting unit 581 can be rephrased as the destination set in the navigation function. As an example, the facility input as the destination via the operation switch group 55 or the remote controller 56 may be set as the destination. In addition, a recommended facility is searched according to the purpose of the drive input from the user via the operation switch group 55 or the remote controller 56, and the facility selected by the user from the searched facilities is set as the destination. It is good also as a structure.

  When the target facility is set by the target facility setting unit 581, the route search unit 582 takes distance priority and time from the departure point such as the vehicle position detected by the position detector 51 to the set destination. A route search process for searching for a recommended route that satisfies a preset condition such as priority using a known search method is performed.

  The route guidance unit 583 causes the display device 53 to sequentially display the electronic map indicating the recommended route and vehicle position searched by the route search unit 582, and also causes the voice output device 54 to sequentially output guidance voices that guide the target facility. Then, route guidance processing for guiding the travel of the recommended route is performed.

  The notification processing unit 584 notifies the information on the navigation device 5 to the oncoming lane monitoring device 6. As an example, when the route guidance process described above is started, the oncoming lane monitoring device 6 is notified of the position of the target facility set by the target facility setting unit 581 and the vehicle position detected by the position detector 51.

  The instruction reception processing unit 585, the search unit 586, the first extraction unit 587, the second extraction unit 588, the first presentation processing unit 589, and the second presentation processing unit 590 will be described in detail later.

<Oncoming lane monitoring device 6>
Next, a schematic configuration of the oncoming lane monitoring device 6 will be described. As shown in FIG. 2, the oncoming lane monitoring device 6 is mounted on a vehicle and connected to a front monitoring camera 2, a communication device 3, and a navigation device 5 that are used in a vehicle in which the device is used.

  The oncoming lane monitoring device 6 determines whether or not the destination set by the navigation device 5 is in a position straddling the oncoming lane of the own vehicle, and whether or not the traffic volume of the oncoming lane around the destination is greater than or equal to a predetermined amount. Depending on the situation, a process to prompt the change of the destination is performed. Further, the oncoming lane monitoring device 6 extracts the traffic volume of the oncoming lane of the own vehicle from the image captured by the front monitoring camera 2 of the own vehicle, and uses the extracted traffic volume of the oncoming lane as probe information from the communication device 3. Transmit to the traffic information center 1.

  As shown in FIG. 4, the oncoming lane monitoring device 6 includes a probe information generation processing unit 61, a probe information transmission processing unit 62, a traffic volume acquisition unit 63, a position specification unit 64, a target facility acquisition unit 65, and a map data acquisition unit 66. , A position determination unit 67, a traffic volume determination unit 68, and a change instruction unit 69.

  The probe information generation processing unit 61 sequentially extracts information such as the traffic volume and imaging time of the opposite lane of the host vehicle from the image captured by the front monitoring camera 2. And the data which transmit as probe information are produced | generated from information, such as the traffic volume and imaging time of the opposite lane of the extracted own vehicle. What is necessary is just to set it as the structure which uses well-known pattern recognition as a method of extracting the traffic volume of the opposite lane of the own vehicle from a captured image.

  The probe information transmission processing unit 62 sequentially transmits the probe information generated by the probe information generation processing unit 61 to the traffic information center 1 via the communication device 3. As an example, the traffic information center 1 determines the traffic volume for each link having a different link direction by accumulating probe information sequentially transmitted from a plurality of vehicles.

  The traffic volume acquisition unit 63 acquires the traffic volume for each link having a different link direction from the traffic information periodically received from the traffic information center 1 by the communication device 3. The position specifying unit 64 specifies the vehicle position of the host vehicle. As an example, the vehicle position of the host vehicle is specified from the vehicle position notified by the notification processing unit 584 of the navigation device 5. The target facility acquisition unit 65 acquires the target facility from the vehicle position notified by the notification processing unit 584 of the navigation device 5.

  The map data acquisition unit 66 acquires map data including road data and POI data. As an example, the configuration may be obtained from the map DB 52 of the navigation device 5. In addition, the oncoming lane monitoring device 6 may include a map DB other than the map DB 52 and may be acquired from the map DB or may be acquired from a center (not shown). The position determination unit 67, the traffic volume determination unit 68, and the change instruction unit 69 will be described in detail later.

<Processing Related to Reset of Target Facility in Driving Support Unit 4 in Embodiment 1>
In the driving support unit 4, when a process for prompting the navigation device 5 to change the destination is performed from the oncoming lane monitoring device 6, the destination is reset by the navigation device 5 according to the user's selection. Here, an example of a flow of processing related to the resetting of the target facility in the driving support unit 4 will be described using the sequence diagram of FIG.

  First, at t1, the route guidance unit 583 of the navigation device 5 starts route guidance processing. At t <b> 2, the notification processing unit 584 of the navigation device 5 notifies the oncoming lane monitoring device 6 of the position of the target facility set by the target facility setting unit 581 and the vehicle position detected by the position detector 51.

  At t3, in the oncoming lane monitoring device 6 that has received notification of the position of the target facility and the vehicle position, the position determination unit 67 determines whether or not the target facility is at a position straddling the oncoming lane. And when it determines with it being in the position which straddles (it is YES at t3), it moves to t4. On the other hand, if it is determined that the position is not in the straddling position (NO at t3), the route guidance process started at t1 is continued as it is.

  Whether or not the target facility is in a position across the opposite lane is determined based on the vehicle position specified by the position specifying unit 64, the position of the target facility acquired by the target facility acquiring unit 65, and the map data acquired by the map data acquiring unit 66. The configuration may be determined from the following. For example, in the map data, when the position of the target facility is not on the lane side where the host vehicle is located but on the opposite lane side, the configuration may be determined that the target facility is in a position across the opposite lane. . On the other hand, when the position of the target facility is on the lane side where the host vehicle is located, the target facility may be determined to be in a position that does not straddle the oncoming lane.

  Further, when the lane in which the host vehicle is located cannot be specified only by the vehicle position, it may be configured to determine whether or not the target facility is located across the opposite lane using the traveling direction of the host vehicle. As an example, when the target facility is located on the right side of the road with respect to the traveling direction of the host vehicle, it may be configured to determine that the target facility is in a position straddling the oncoming lane. In this case, when the target facility is located on the left side, the configuration may be such that it is determined that it is in a position that does not straddle. For the traveling direction of the host vehicle, as an example, a plurality of vehicle positions arranged in time series are acquired, and the direction in which the approximate line obtained by the least square method extends from the plurality of vehicle positions is defined as the traveling direction of the host vehicle. The configuration may be specified as follows. In addition, it is good also as a structure which specifies the direction which goes to a target facility from the vehicle position of the own vehicle along a link with the advancing direction of the own vehicle.

  At t4, the traffic volume determination unit 68 of the oncoming lane monitoring device 6 determines whether the traffic volume of the oncoming lane of the host vehicle around the target facility is equal to or greater than a predetermined amount. And when it determines with the traffic volume being more than predetermined amount (it is YES at t4), it moves to t5. On the other hand, when it is determined that the traffic volume is less than the predetermined amount (NO at t4), the route guidance process started at t1 is continued as it is.

  Whether the traffic volume of the opposite lane of the host vehicle in the vicinity of the target facility is equal to or greater than a predetermined amount depends on the vehicle position specified by the position specifying unit 64, the position of the target facility acquired by the target facility acquiring unit 65, and the traffic volume acquisition. What is necessary is just to set it as the structure determined from the traffic volume acquired by the part 63, and the map data acquired by the map data acquisition part 66. FIG.

  As an example, the periphery of the target facility may be a link adjacent to the target facility. As for the oncoming lane of the own vehicle, if the lane in which the own vehicle is located can be identified from the vehicle position, the link in the link direction opposite to the traveling lane of the own vehicle may be set as the oncoming lane. In addition, when the traveling direction of the host vehicle described above is used, the link in the link direction opposite to the traveling direction of the host vehicle may be set as the oncoming lane. The predetermined amount is a traffic amount that is difficult to cross the lane, and is a value that can be arbitrarily set.

  At t5, the change instruction unit 69 of the oncoming lane monitoring device 6 performs a change instruction process. In the change instruction process, a process for prompting a change of the target facility is performed. As an example, the search unit 586 of the control device 58 of the navigation device 5 gives an instruction (hereinafter referred to as a search instruction) to search for a facility of the same system as the target facility. Of course, facilities of the same system as the target facility do not include the target facility. After the change instruction process is performed, the process proceeds to t6.

  At t6, the search unit 586 that has received the search instruction performs a search process. In the search process, a facility of the same system as the target facility is searched for, excluding the target facility. As an example, a configuration may be adopted in which a facility whose type of facility is the same as the target facility is searched based on POI data. After performing the search process, the process proceeds to t7.

  At t7, the first extraction unit 587 and the second extraction unit 588 of the control device 58 perform extraction processing. As the extraction process, the first extraction unit 587 extracts, from the facilities searched in the search process, the nearest facility at a position where the host vehicle can stop without straddling the oncoming lane.

  As an example, the facility at a position where it can stop without straddling the oncoming lane is the location of the facility searched by the search process, the vehicle position detected by the position detector 51, and the map data of the map DB 52. What is necessary is just to set it as the structure similarly to the process of t3. Then, it is only necessary that the facility having the shortest linear distance between the facility position and the vehicle position is extracted from the facilities determined to be in a position where the vehicle can stop without straddling the oncoming lane.

  As the extraction process, the second extraction unit 588 straddles the opposite lane for the own vehicle among the facilities searched in the search process, but the traffic volume of the opposite lane of the own vehicle around the facility is less than a predetermined amount. The nearest facility is extracted from a car.

  As an example, the facility in the position across the opposite lane is similar to the processing at t3 from the location of the facility searched by the search processing, the vehicle position detected by the position detector 51, and the map data of the map DB 52. What is necessary is just to set it as the structure to determine. Subsequently, for a facility that is determined to be in a position straddling the oncoming lane, a facility whose traffic volume on the oncoming lane of the host vehicle around the facility is less than a predetermined amount is extracted. The extracted facility may be configured to further extract the facility having the shortest linear distance between the facility position and the vehicle position. The facility periphery may be a link adjacent to the facility.

  About the traffic volume of the opposite lane of the own vehicle, the second extraction unit 588 may acquire the traffic volume acquired by the traffic volume acquisition unit 63 of the oncoming lane monitoring device 6 from the oncoming lane monitoring device 6. The predetermined amount mentioned here may be the same as the predetermined amount described in the description of the process at t4, for example. After performing the extraction process, the process proceeds to t8.

  At t8, the first presentation processing unit 589 and the second presentation processing unit 590 of the control device 58 perform presentation processing. As the presentation process, the first presentation processing unit 589 causes the facility extracted by the first extraction unit 587 to be presented to the user. As an example, the display device 53 may be configured to display an electronic map on which a mark indicating the position of the facility extracted by the first extraction unit 587 is superimposed. That is, the display device 53 displays an electronic map on which a mark indicating the position of the nearest facility (hereinafter referred to as the nearest left facility) at which the host vehicle can stop without crossing the oncoming lane is superimposed. What is necessary is just composition.

  In addition, when a mark indicating the position of the nearest left facility is displayed superimposed on the electronic map, the distance from the vehicle position such as “1 km” to the position of the nearest left facility is also shown in FIG. It is preferable to display. According to this, since the user can know the distance to the nearest left facility, the user determines whether or not to use the nearest left facility as a new destination in consideration of the distance to the nearest left facility. It will be possible to judge. Therefore, it becomes easy for the user to determine whether or not the nearest left facility is a new destination.

  For example, the distance from the vehicle position to the position of the nearest left facility may be a distance according to the link length. 6A is a mark indicating the vehicle position of the host vehicle, B is a mark indicating the position of the target facility, and C is a mark indicating the position of the nearest left facility. Moreover, the broken line in FIG. 6 represents the travel locus, and the solid line represents the recommended route.

  As shown in FIG. 6, when the mark indicating the position of the nearest left facility is displayed, the mark indicating the position of the target facility is also preferably displayed superimposed on the electronic map. According to this, the user compares the target facility set in the navigation device 5 before performing the search process at t6 with the facility extracted by the first extraction unit 587 after performing the search process at t6. It becomes possible to determine whether or not the facility on the left side is a new destination. When both the mark indicating the location of the target facility and the mark indicating the location of the nearest left facility are superimposed on the electronic map, the user can intuitively determine how far they are from the vehicle position of the vehicle. Will be able to judge. Therefore, it becomes easier for the user to determine whether or not the nearest left facility is a new destination.

  As the presentation process, the second presentation processing unit 590 causes the facility extracted by the second extraction unit 588 to be presented to the user. As an example, the display device 53 may be configured to display an electronic map on which a mark indicating the location of the facility extracted by the second extraction unit 588 is superimposed. That is, a mark indicating the position of the nearest facility (hereinafter, nearest right facility) from the own vehicle where the traffic volume of the opposite lane of the own vehicle in the vicinity is less than a predetermined amount although the own vehicle straddles the opposite lane is superimposed. The electronic map may be displayed on the display device 53.

  In addition, when a mark indicating the position of the nearest right facility is displayed superimposed on the electronic map, the distance from the vehicle position such as “700 m” to the position of the nearest right facility is also shown in FIG. It is preferable to display. According to this, since the user can know the distance to the nearest right facility, the user determines whether or not the nearest right facility is a new destination in consideration of the distance to the nearest right facility. It will be possible to judge. Therefore, it becomes easy for the user to determine whether or not the nearest right facility is a new destination.

  For example, the distance from the vehicle position to the position of the nearest right facility may be a distance according to the link length. 7A is a mark indicating the vehicle position of the host vehicle, B is a mark indicating the position of the target facility, and D is a mark indicating the position of the nearest right facility. Moreover, the broken line in FIG. 7 represents a travel locus, and the solid line represents a recommended route.

  As shown in FIG. 7, when the mark indicating the position of the nearest right facility is displayed, the mark indicating the position of the target facility is also preferably displayed superimposed on the electronic map. According to this, the user compares the target facility set in the navigation device 5 before performing the search process at t6 with the facility extracted by the second extraction unit 588 after performing the search process at t6. It becomes possible to determine whether or not the near right facility is a new destination. When both the mark indicating the position of the target facility and the mark indicating the position of the nearest right-hand facility are superimposed on the electronic map, the user can intuitively determine how far they are from the vehicle position of the vehicle. Will be able to judge. Therefore, it becomes easier for the user to determine whether or not the nearest right facility is a new destination.

  In addition, as the presentation process, both the facility extracted by the first extraction unit 587 and the facility extracted by the second extraction unit 588 by the first presentation processing unit 589 and the second presentation processing unit 590 are directed to the user. It is good also as a structure to show.

  As an example, the display device 53 may be configured to display an electronic map in which a mark indicating the location of the facility extracted by the first extraction unit 587 and a mark indicating the location of the facility extracted by the second extraction unit 588 are superimposed. That's fine. In other words, as shown in FIG. 8, the display device 53 is configured to display an electronic map in which the mark indicating the position of the nearest left facility and the mark indicating the position of the nearest right facility are superimposed. That's fine. 8A is a mark indicating the vehicle position of the host vehicle, B is a mark indicating the position of the target facility, C is a mark indicating the position of the nearest left facility, and D is the nearest right facility. It is a mark indicating the position of. Moreover, the broken line in FIG. 8 represents a travel locus, and the solid line represents a recommended route.

  According to this, the user can intuitively determine how far the mark indicating the position of the nearest left facility and the mark indicating the position of the nearest right facility are away from the vehicle position of the own vehicle. Become. Therefore, it becomes easy for the user to determine which of the nearest left facility and the nearest right facility is a new destination.

  In addition, as shown in FIG. 8, when displaying the marks indicating the positions of the nearest left facility and the nearest right facility, the marks indicating the positions of the target facilities may be displayed superimposed on the electronic map. preferable.

  In addition, when the mark indicating the position of the target facility is displayed on the display device 53 together with the mark indicating the position of the nearest left side facility and the mark indicating the position of the nearest right side facility, the distance from the vehicle position to the position of the target facility May be displayed. Further, the presentation process may be configured such that presentation is performed by outputting the name of the nearest left facility or the nearest right facility and the distance to those facilities from the speech output device 54.

  In this embodiment, as an example, by touching a mark indicating the position of the nearest left facility displayed on the display device 53 or a mark indicating the position of the nearest right facility, the facility as the destination can be reset. To do. Specifically, the facility displayed at the position where the touch operation is performed is selected by the operation switch group 55 as a touch switch integrated with the display device 53, and the selected facility is set as a destination facility. Will be reset. If the target facility set by the navigation device 5 before performing the search process at t6 is selected, the destination facility is not reset and the route guidance process to this target facility is continued. What is necessary is just to be the structure to do.

  In this embodiment, for the sake of convenience, the first extraction unit 587 and the second extraction unit 588, and the first presentation processing unit 589 and the second presentation processing unit 590 are distinguished from each other. It is good also as a structure comprised by a member. After the presentation process is performed, the process proceeds to t9.

  Returning to FIG. 5, at t9, when the nearest left facility or nearest right facility is selected and the destination facility is reset (YES at t9), the process proceeds to t10. On the other hand, if the destination facility has not been reset (NO at t9), the route guidance process started at t1 is continued as it is.

  At t10, the route search unit 582 of the control device 58 performs route search processing for the reset destination, searches for a recommended route to the reset destination, and proceeds to t11. At t11, the route guidance unit 583 of the control device 58 starts route guidance processing for guiding the travel of the recommended route searched at t10.

  After starting the route guidance process at t11, for example, the process from t2 may be repeated for the reset destination. Then, the sequence may be terminated when the destination is reached.

<Summary of Embodiment 1>
According to the configuration of the first embodiment, when the target facility that has been set as the destination is in a position across the opposite lane, and the traffic volume of the opposite lane of the host vehicle around the target facility is equal to or greater than a predetermined amount, Another facility of the same system as the destination can be searched, and the searched facility can be reset as a new destination. Therefore, it is possible to newly set a facility that can stop without straddling the opposite lane with a large amount of traffic. As a result, in the navigation function of the navigation device 5 used in the own vehicle, the user can receive guidance in consideration of the traffic volume in the opposite lane of the own vehicle.

  In the present embodiment, the oncoming lane monitoring device 6 includes a first extraction unit 587 and a second extraction unit 588, and a first presentation processing unit 589 and a second presentation processing unit 590. Not limited to. For example, a configuration without the first extraction unit 587 and the first presentation processing unit 589 may be provided, or a configuration without the second extraction unit 588 and the second presentation processing unit 590 may be provided.

  In the present embodiment, the configuration in which the first extraction unit 587 extracts the nearest left side facility and the second extraction unit 588 extracts the nearest right side facility is shown, but the present invention is not necessarily limited thereto. For example, in the 1st extraction part 587, not only the nearest facility in the position where the own vehicle can stop without straddling the oncoming lane from the facilities searched by the search process is extracted. It is good also as a structure which extracts the some facility in the position which can stop without straddling an oncoming lane. The second extraction unit 588 also extracts a plurality of facilities from which the own vehicle straddles the opposite lane but whose traffic volume in the opposite lane is less than a predetermined amount from the facilities searched by the search process. Also good.

  When a plurality of facilities are extracted by the first extraction unit 587, the first presentation processing unit 589 is configured to display an electronic map on which marks indicating the positions of the plurality of facilities are superimposed on the display device 53. That's fine. Even when a plurality of facilities are extracted by the second extraction unit 588, the second presentation processing unit 590 is configured to display the electronic map on which the marks indicating the positions of the plurality of facilities are superimposed on the display device 53. That's fine.

  In addition, in the present embodiment, a configuration in which a search instruction is issued from the oncoming lane monitoring device 6 to the navigation device 5 and the search processing and extraction processing are performed by the navigation device 5 is shown, but the configuration is not necessarily limited thereto. For example, the configuration up to the search processing may be performed by the oncoming lane monitoring device 6, and the configuration up to the extraction processing may be performed by the oncoming lane monitoring device 6.

(Embodiment 2)
The present invention is not limited to the above-described first embodiment, and the following second embodiment is also included in the technical scope of the present invention. Hereinafter, the second embodiment will be described. For convenience of explanation, members having the same functions as those shown in the drawings used in the description of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

<Differences from Embodiment 1>
In the driving support system 100 according to the second embodiment, when the facility searched by the search unit 586 is displayed on the map instead of the processing at t7 and t8 in the first embodiment, the traffic volume of the opposite lane of the own vehicle is a predetermined amount. The driving assistance system 100 is the same as that of the driving assistance system 100 according to the first embodiment except that the display indicating the less than section is performed. Specifically, the second embodiment is different from the first embodiment in that the navigation device 5 includes a control device 58 a that is partially different from the control device 58 instead of the control device 58.

  As illustrated in FIG. 9, the control device 58a includes a target facility setting unit 581, a route search unit 582, a route guide unit 583, a notification processing unit 584, an instruction reception processing unit 585, a search unit 586, and a third presentation processing unit 591. It has.

<Processing Related to Reset of Target Facility in Driving Support Unit 4 in Embodiment 2>
Here, processing related to resetting of the target facility in the driving support unit 4 of Embodiment 2 will be described. In the driving support unit 4 of the second embodiment, similarly to the driving support unit 4 of the first embodiment, the processes from t1 to t6 described above are performed.

  In the driving support unit 4 of the second embodiment, instead of performing the processes of t7 and t8 following the process of t6, the following process is performed by the third presentation processing unit 591 following the process of t6. The third presentation processing unit 591 causes the display device 53 to display an electronic map on which a mark indicating the location of the facility searched by the search processing of the search unit 586 is superimposed. When there are a plurality of facilities searched by the search process within the display range of the electronic map, marks indicating the positions of the plurality of facilities are displayed.

  The third presentation processing unit 591 does not distinguish between a facility where the host vehicle can stop without crossing the oncoming lane and a facility where the host vehicle cannot stop unless the host vehicle crosses the oncoming lane. It is good also as a structure displayed on this, and it is good also as a structure displayed separately.

  In addition, the third presentation processing unit 591 displays a mark indicating the position of the facility searched in the search process, that is, the facility of the same system as the target facility that has been set as the destination, on the opposite lane of the own vehicle. A mark indicating a section where the traffic volume is less than a predetermined amount is also displayed superimposed on the electronic map.

  About the traffic volume of the opposite lane of the own vehicle, the third presentation processing unit 591 may acquire the traffic volume acquired by the traffic volume acquisition unit 63 of the oncoming lane monitoring device 6 from the oncoming lane monitoring device 6. Moreover, what is necessary is just to make the predetermined amount said here the same as the predetermined amount described in description about the process of t4 of Embodiment 1, for example. The section in which the traffic volume of the opposite lane of the host vehicle is less than the predetermined amount may be specified from the above-described traffic volume and the map data in the map DB 52.

  Here, a display example of a mark indicating a section where the traffic volume of the opposite lane of the own vehicle is less than a predetermined amount will be described with reference to FIG. As shown in FIG. 10, as a mark indicating a section in which the traffic volume of the opposite lane of the own vehicle is less than a predetermined amount, an arrow pointing in a direction in which the own vehicle straddles the opposite lane is indicated on the electronic map on the opposite lane of the own vehicle. What is necessary is just to set it as the structure superimposed on the area where traffic volume is less than predetermined amount (refer G in a figure). 10A is a mark indicating the vehicle position of the host vehicle, B is a mark indicating the position of the target facility that has been set as the destination, and F is a mark indicating the position of the facility searched in the search process, G is a mark indicating a section where the traffic volume in the opposite lane of the vehicle is less than a predetermined amount. Moreover, the broken line in FIG. 10 represents a travel locus, and the solid line represents a recommended route.

  Here, a configuration is shown in which a plurality of arrows are displayed in a target section as a mark indicating a section in which the traffic volume of the opposite lane of the host vehicle is less than a predetermined amount, but the present invention is not necessarily limited thereto. For example, one mark such as an arrow straddling the target section may be displayed for each target section. In addition, the configuration may be such that the color of the target section is displayed separately from the other sections.

<Summary of Embodiment 2>
Also in the configuration of the second embodiment, as in the configuration of the first embodiment, the target facility that has been set as the destination is in a position across the opposite lane, and the traffic volume of the opposite lane of the host vehicle around the target facility is When it is more than the fixed amount, another facility of the same system as the destination can be searched, and the searched facility can be reset as a new destination. Therefore, in the navigation function of the navigation device 5 used in the own vehicle, the user can receive guidance in consideration of the traffic volume in the opposite lane of the own vehicle.

  In addition, according to the configuration of the second embodiment, an electronic map includes a facility of the same system as the target facility that has been set as a destination, and a mark that indicates a section in which the traffic volume of the opposite lane of the vehicle is less than a predetermined amount Since the information is superimposed and displayed, the user can easily identify a facility that can stop without straddling an opposite lane with a large amount of traffic by relying on this mark.

  In the second embodiment, the control device 58a includes the first extraction unit 587 of the first embodiment, so that the facility extracted by the first extraction unit 587 from the facilities searched by the search process, that is, the own vehicle is opposed. It is good also as a structure which makes the display apparatus 53 distinguish the facility in the position which can stop without straddling a lane from the other facility searched by the search process.

<Finally>
In the first embodiment and the second embodiment described above, the configuration in which the oncoming lane monitoring device 6 is mounted on the vehicle is shown, but the configuration is not necessarily limited thereto. For example, when the oncoming lane monitoring device 6 is a server outside the vehicle and exchanges information with the navigation device 5 via a communication device (not shown), the oncoming lane monitoring described in the first and second embodiments is performed. It is good also as a structure which carries out the function similar to the apparatus 6. FIG. In this case, a vehicle using the navigation device 5 corresponds to the subject vehicle in the claims.

  In the first embodiment and the second embodiment described above, the configuration in which the navigation device 5 and the oncoming lane monitoring device 6 are separated from each other is shown, but the configuration is not necessarily limited thereto. For example, the navigation device 5 has the function of the oncoming lane monitoring device 6 or the oncoming lane monitoring device 6 has the function of the navigation device 5 so that the navigation device 5 and the oncoming lane monitoring device 6 are integrated. It is good also as composition which has.

  In addition, in the first embodiment and the second embodiment described above, the configuration in which the destination facility is the target facility is shown, but the present invention is not necessarily limited thereto. For example, it may be configured such that a transit facility is also a target facility.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention.

4 driving support unit (driving support device), 63 traffic volume acquisition unit, 64 position specifying unit, 65 target facility acquisition unit, 66 map data acquisition unit, 67 position determination unit, 68 traffic volume determination unit, 69 change instruction unit, 586 Search unit, 587 first extraction unit, 588 second extraction unit, 589 first presentation processing unit, 590 second presentation processing unit, 591 third presentation processing unit

Claims (8)

A driving support device (4) including a traffic volume acquisition unit (63) for acquiring the traffic volume of an opposite lane of a target vehicle that is a target vehicle,
A position specifying unit (64) for specifying a current position of the target vehicle;
A target facility acquisition unit (65) that acquires a target facility that is one of a destination and a waypoint set in the navigation function used in the target vehicle;
A map data acquisition unit (66) for acquiring map data including road data indicating a road by a plurality of links and nodes and facility data indicating the position of the facility;
Based on the current position specified by the position specifying unit, the target facility acquired by the target facility acquiring unit, and the map data acquired by the map data acquiring unit, the target facility is located at a position across the opposite lane for the target vehicle. A position determination unit (67) for determining whether or not there is,
A traffic volume determination unit (68) that determines whether the traffic volume of the opposite lane of the target vehicle around the target facility is equal to or greater than a predetermined amount from the traffic volume of the opposite lane of the target vehicle acquired by the traffic volume acquisition unit. When,
When the position determination unit determines that the target facility is in a position across the opposite lane, and the traffic determination unit determines that the traffic volume of the opposite lane of the target vehicle around the target facility is equal to or greater than a predetermined amount And a change instructing unit (69) for performing a process for prompting the change of the target facility. In claim 1,
A search unit (586) for searching for facilities of the same system as the target facility;
The change instruction unit performs an instruction to cause the search unit to perform the search as a process for prompting the change of the target facility,
The driving support device, wherein the search unit performs the search when receiving the instruction from the change instruction unit. In claim 2,
A first extraction unit (587) for extracting a facility at a position where the target vehicle can stop without straddling the oncoming lane from the facilities searched by the search unit;
A driving support apparatus comprising: a first presentation processing unit (589) that presents the facility extracted by the first extraction unit to a user. In claim 3,
When the first presentation processing unit presents the facility extracted by the first extraction unit to the user, the first presentation processing unit also provides the user with information indicating how far the facility is located from the target vehicle. A driving support device characterized by being presented. In claim 3 or 4,
The first presentation processing unit
By displaying the facility extracted by the first extraction unit on a map, the facility extracted by the first extraction unit is presented to the user,
When the facility extracted by the first extraction unit is displayed on a map, the target facility set in the navigation function before the search is performed by the search unit is also displayed on the map. A driving support device. In any one of Claims 2-5,
Of the facilities searched by the search unit based on the traffic volume of the opposite lane of the target vehicle acquired by the traffic acquisition unit, the target vehicle is located in the vicinity of the facility although it straddles the opposite lane. A second extraction unit (588) for extracting a facility whose traffic volume in the opposite lane of the vehicle is less than a predetermined amount;
A driving support apparatus comprising: a second presentation processing unit (590) that presents the facility extracted by the second extraction unit to a user. In claim 6,
The second presentation processing unit
By displaying the facility extracted by the second extraction unit on a map, the facility extracted by the second extraction unit is presented to the user,
When the facility extracted by the second extraction unit is displayed on a map, the target facility set in the navigation function before the search is performed by the search unit is also displayed on the map. A driving support device. In any one of Claims 2-5,
A third presentation processing unit (591) for displaying the facility searched by the search unit on a map;
When displaying the facility searched by the search unit on a map, the third presentation processing unit is configured to face the target vehicle based on the traffic volume of the opposite lane of the target vehicle acquired by the traffic volume acquisition unit. A driving support device that also displays a section indicating that a traffic amount of a lane is less than a predetermined amount.

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