JP2009002847A - Onboard system and drive support method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an onboard system for supporting driving so as to achieve traveling with a low environmental load according to a traveling road and to provide a drive support method. <P>SOLUTION: A target value of fuel consumption of each link is determined according to a degree or inclination of bending of the link. The target value of the link in which there is a current position is compared with the fuel consumption of that time point to compute a traveling result rank indicative of a degree of target achievement. When the present position is represented by x2 (a3), a present position mark 402 is indicated by an indication color in an intermediate density according to "possible" of the traveling result obtained on the present position x2. Each part of the traveling road in the advancing side rather than the present position x2 is indicated by an indication color in a density corresponding to the rank of the target value of the link in which each part is included. Each part of the road on which the vehicle already traveled is indicated by an indication color in a density according to the traveling result rank computed with respect to the traveling on the part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technology for assisting a user to perform low environmental load traveling, which is traveling with a small load on the environment.

As a technology to assist the user in low-environment load driving, which is driving with a low environmental load, each section of the road that has already traveled on the map is color-coded according to the average fuel consumption when driving the section. A technique for displaying the image is known (for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-180185

According to the technology described in Patent Document 1, the user grasps the average fuel consumption of a road section that has been traveled so far in relation to the road section that has traveled, and determines whether or not the user has been driving from the grasped content. Judgment can be reflected in future driving.
However, the average fuel economy that should be targeted to reduce the environmental load will naturally vary depending on the road conditions such as flat straight roads, mountain slopes, expressways, and city roads, so it has been driven in the past. Even if only the average fuel consumption of each road section is presented to the user, the user's low environmental load traveling cannot be sufficiently supported.

  Therefore, an object of the present invention is to support the user so that the user can perform low environmental load traveling based on a target value that matches the situation and type of the road on which the vehicle is traveling.

  In order to achieve the above object, the present invention provides a navigation means for displaying a guidance image including a road map and a current position mark representing the current position on the road map on an in-vehicle system mounted on an automobile, and each road section And a target setting means for setting a target value of fuel consumption when traveling on the road section, and in the navigation means, each part of the road graphic on the road map corresponding to each road section is According to the target value set in the road section corresponding to the portion, the display is performed in a display form that is determined differently for different ranges of the target value. In addition, such an in-vehicle system is configured so that each road section is estimated to be used in the navigation means only for each road section estimated to be traveled in the future, or for each road section on the traveling direction side of the vehicle on the currently traveling road. Each part of the road graphic on the road map corresponding to the section is displayed in a display form that is determined differently for different ranges of the target value according to the target value set for the road section corresponding to the section. You may comprise.

  In order to achieve the above object, the present invention represents a road map, a current position mark indicating the current position on the road map, and a route to the destination on the road map. Navigation means for displaying a guidance image including a route graphic; and target setting means for setting a target value of fuel consumption when traveling on the road section for each road section; in the navigation means, Each part of the route graphic corresponding to each road segment on the destination side from the current position is different depending on the target value set according to the target value set in the road segment corresponding to the part. Is displayed in a display form determined by

  According to these in-vehicle systems, the target setting unit can set the target value of the fuel consumption when traveling on the road section for each road section. A target value suitable for the type can be set. In addition, by setting the target value in this way, the user can set the target value that matches the road condition and type of the road section that is being driven or the road section that is to be traveled, By directly grasping from the display form of the portion corresponding to the road section of the route graphic, it is possible to perform driving so as to achieve the target value.

Therefore, the user can be supported so that the user can perform low environmental load traveling with respect to the fuel consumption based on the target value that matches the situation and type of the road on which the vehicle is traveling.
Each of the above-mentioned in-vehicle systems is provided with an achievement level calculation means for calculating the degree of achievement of the fuel efficiency of the vehicle at the time point with respect to the target value set for the road section running at the time point. In the navigation means, it is also preferable to display the current position mark in a display form that is determined differently for different ranges of achievement according to the achievement calculated by the achievement calculation means.

By doing in this way, the user can directly grasp how appropriate the current driving is with respect to the target value of the running road section in terms of fuel efficiency from the display form of the current position mark. Will be able to.
Each of the above-described in-vehicle systems is provided with achievement level calculation means for calculating the degree of achievement of the fuel efficiency of the vehicle at the time point with respect to the target value set for the road section running at the time point. In the navigation means, for road portions that have traveled in the past, each portion of the road graphic on the road map corresponding to the road portion that has traveled in the past was traveling on the road portion corresponding to the portion. It is also preferable to display in a display form that is determined differently for different ranges of achievement according to the achievement calculated by the achievement calculation means.

By doing in this way, the user can see how reasonable the current driving is for the target value of each road section that has been driven in the past from the display form of the road part that has traveled in the past on the road map. It will be possible to directly grasp the track record of what was.
Further, in each of the above-described in-vehicle systems, the target value of fuel consumption set by the target setting unit for each road section is the road shape of the road section, the gradient of the road section, and the road of the route to which the road section belongs. It is preferable to be determined in accordance with at least one of the type and the average fuel consumption obtained for the traveling of the road section that has traveled in the past.

  Further, in each of the above-described in-vehicle systems, as the target value, instead of the target value of fuel consumption, a target value of an arbitrary state quantity of the vehicle related to environmental load due to traveling, such as emission and noise, is set. Also good.

  As described above, according to the present invention, it is possible to support the user so that the user can perform low environmental load traveling based on the target value that matches the condition and type of the road on which the vehicle is traveling.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows a configuration of an in-vehicle system according to the present embodiment.
The in-vehicle system is a system mounted on an automobile, and includes a navigation device 1, an operation unit 2, a display device 3, a vehicle state sensor 4, and a GPS receiver 5 as illustrated. . Here, the vehicle state sensor 4 is various sensors that detect a vehicle state, such as an azimuth sensor such as an angular acceleration sensor or a geomagnetic sensor, or a vehicle speed sensor such as a vehicle speed pulse sensor.

  The navigation device 1 communicates with a user using the map data storage unit 11, which is a storage device such as a DVD drive or HDD that stores map data representing a map, the current state calculation unit 12, the operation unit 2, or the display device 3. Various information is acquired from the ECU 6 that controls and monitors each part of the vehicle included in the vehicle, the GUI control unit 13 that controls input and output, the route search unit 14, the memory 15, the control unit 16, the guidance image generation unit 17. ECU interface 18 for this purpose.

  However, the above navigation apparatus 1 may be a CPU circuit having a general configuration including peripheral devices such as a microprocessor, a memory, and other graphic processors and geometric processors in terms of hardware. In this case, each part of the navigation device described above may be realized as a process embodied by a microprocessor executing a program prepared in advance. In this case, such a program may be provided to the navigation apparatus 1 via a recording medium or an appropriate communication path.

Next, FIG. 2 a shows the contents of the map data stored in the map data storage unit 11.
As shown in the figure, the map data includes management data describing the version of the map data, route data, and basic map data representing the map.
The route data has a route record provided for each road. Each route record includes a route number that is an identifier of a road, a route type such as a highway, a national road, and a prefectural road, The route name of the road is described.
The basic map data includes a road unit representing a road network and a drawing unit representing drawing objects (such as place names and topographical figures) other than roads included in the map.
Here, in the road network data, a road network is defined as a set of nodes that represent intersections and links that connect the nodes, and the shape of each link is expressed as a connected body of segments that are straight lines. Each segment is defined by a node at both ends of the link and a shape point that is a connection point of the segments in the link arranged on the link. That is, the road between the intersection A and the intersection B of the road network as shown in FIG. 2b includes a node N1 corresponding to the intersection A, a node N2 corresponding to the intersection B, a node N1 and a node as shown in FIG. The shape of the link L (N1N2), which is modeled as a link L (N1N2) connecting N2 and having both ends of the node N1 and the node N2, is defined by segments SG1-SG6 sequentially connected by shape points SP01-SP05. The

The road unit has node data provided for each node and link data provided for each link.
Each node data includes a node number serving as an identifier of the corresponding node, an assigned route number indicating the route number of the route to which the corresponding node belongs, a node attribute indicating various attributes of the corresponding node, and a position of the corresponding node. The node connection information includes node coordinates and node connection information. The node connection information includes a connection link number indicating the link number of the link connected to the corresponding node, and other nodes connected to the corresponding node via a single link. The connection node number representing the node number is registered.

  Each link data includes a link number that is an identifier of the corresponding link, an assigned route number that indicates the route number of the route to which the corresponding link belongs, a link attribute that represents various attributes of the corresponding link, and a low environmental load target value , Representing the node number of the two nodes that are the end points of the corresponding link, representing the link number of the other link connected to the node indicated by the first endpoint node and the second endpoint node, the first endpoint node or the second endpoint node Link connection information and shape point list are registered. Also, in the shape point list of the link data, the shape point coordinates indicating the coordinates of the shape point on the corresponding link are passed according to the order of passing through the corresponding link from the first end point node toward the second end point node. sign up.

  And the target value of low environmental load driving | running | working at the time of drive | working a corresponding link is stored in the low environmental load driving target value of link data. This low environmental load travel target value represents the degree to which the environmental load due to travel of the automobile is small. The larger the low environmental load travel target value, the smaller the environmental load indicated by the low environmental load travel target value.

  As such a low environmental load travel target value, a value that determines a target value of fuel consumption, emission, or noise can be used. When a value that defines a fuel efficiency target value is used as a low environmental load travel target value, The greater the load travel target value, the greater the fuel efficiency target value (travel distance per unit fuel consumption) indicated by the low environmental load travel target value.

Here, in the following, description will be made on the assumption that a value for determining a target value of fuel consumption is used as a low environmental load travel target value as an example.
Now, the low environmental load target value of each link is higher fuel consumption (unit fuel consumption) depending on the straightness and gradient of the link and the type of road (highway, general road, city road) to which the link belongs. A link corresponding to a road section that is easier to travel with a longer driving distance is determined so that the lower environmental load target value is larger. That is, for example, a low environmental load target value is set to an evaluation value that is set so as to increase as the straightness of the link increases and increases as the climb slope of the link decreases, according to the type of road to which the link belongs. Multiply by a coefficient. The coefficient corresponding to the type of road is determined so that the highway is larger than the general road and the general road is larger than the city road.

  However, the low environmental load travel target value may be determined based on the fuel efficiency when actually traveling on the road section corresponding to the link. That is, the low environmental load target value indicates the fuel efficiency that is 15% higher than the average value of the fuel efficiency when the road section corresponding to the link travels normally without trying low environmental load travel, etc. It may be determined as follows.

Next, a travel performance table stored in the memory 15 in the present embodiment is shown in FIG.
As shown in the figure, the travel record table can include a plurality of entries (each row in the figure), and each entry stores a link number and a travel record rank distribution. Further, in the travel performance rank distribution, evaluation information for each section is registered for each evaluation of the quality of the low environmental load travel of the user performed while traveling the link indicated by the link number. In the evaluation information for each section, the evaluation target section (P # -P #) is registered as the evaluation section, and the evaluation results of evaluation “excellent” / “possible” / “bad” are registered as the driving performance rank. Is done.

Now, in such a configuration, the current state calculation unit 12 of the navigation device 1 repeatedly performs the following processing.
That is, the current state calculation unit 12 determines the current position previously determined by the road unit of the map data read from the map data storage unit 11 with respect to the current position estimated from the outputs of the vehicle state sensor 4 and the GPS receiver 5. Map matching processing with a map around the area, and the most likely coordinates as the current position and the most likely direction as the current traveling direction are determined as the current position and the current traveling direction, respectively, and set in the memory 15 To do.

  The control unit 16 receives a destination setting from the user via the operation unit 2 and the GUI control unit 13, and sets the destination setting in the memory 15. Then, the route search unit 14 is caused to search for a guidance route to the destination. The route search unit 14 reads the road unit data of the map data in the necessary geographical range from the map data storage unit 11, and calculates the minimum cost route from the current position set in the memory 15 to the destination with the minimum distance, A search is performed based on each of a plurality of cost models such as a time minimum, the searched route is set as a guide route, and route data of the guide route is set in the memory 15.

In addition, when the current position set in the memory 15 is near the destination, the control unit 16 determines that the destination has arrived, and also performs processing for clearing the destination and the guidance route set in the memory 15. .
In addition, the control unit 16 periodically calculates a map display range and repeatedly performs a process of requesting the guide image generation unit 17 to display a guide image in the calculated map display range. In calculating the map display range, the map display range becomes a range around the current position set in the memory 15, and the size of the map represented by the display map scale in which the map display range is set is displayed on the display device 3. This is done by calculating the map display range so that the size matches the size of the screen.

  The guide image generation unit 17 requested to display the guide image from the control unit 16 in this way, the drawing objects (such as place names and topographic figures) within the map display range indicated by the map data drawing unit, and the map A map image is generated by drawing a link within the map display range indicated by the link data of the road unit of the data at the set display map scale. Here, the drawing of the link is performed by a link drawing process described later.

  Further, the guide image generation unit 17 draws a current position mark indicating the current position set in the memory 15 on the drawn map image in the set display color, and performs GUI control as the guide image. The image is displayed on the display device 3 via the unit 13. In addition, when the guidance route is set, the guidance image generation unit 17 displays the guidance route within the map display range on the map image by guidance route drawing processing described later in the guidance image displayed on the display device 3. Draw the root figure shown. When the destination is included in the map display range, the destination mark indicating the destination is also drawn in the guide image displayed on the display device 3.

FIG. 4a shows an example of the guidance image displayed on the display screen of the display device 3 in this way. When the guidance route is not set, the guidance image represents a map representing the map around the current position. A current position mark 402 indicating the current position is displayed on the image 401.
On the other hand, when the guidance route is set, the route image 403 representing the guidance route in the map display range is displayed on the map image 401 together with the current position mark 402 as shown in FIG. 4B. Further, when the destination is included in the map display range, the destination mark 404 indicating the destination is also displayed on the map image 401.

  Now, as shown in FIGS. 4A and 4B, the display color of the current position mark 402 in the guide image is drawn with a different display color from time to time. Next, as shown in FIG. 4a, when no guidance route is set, among the links representing roads in the map image 401 in the guidance image, the link 411 that has traveled so far and the traveling direction of the traveling road The side link 412 is drawn in a different display color for each section. Also, as shown in FIG. 4b, the route graphic 403 representing the guidance route is drawn with a different display color for each section.

  Here, the display color of the current position mark 402 is controlled by the low environmental load running degree display process performed by the control unit 16, and the link display color is the link performed by the guide image control unit for drawing the link as described above. The display color of the route graphic 403 is controlled by the drawing process, and the guidance image control unit controls the display color of the route graphic 403 to draw the route graphic 403 as described above.

Hereinafter, the low environmental load travel display process, the link drawing process, and the guidance route drawing process that control these display colors will be described.
First, the low environmental load travel display processing performed by the control unit 16 will be described.
FIG. 5 shows the procedure of the low environmental load running degree display process.
As shown in the figure, in this process, first, the link where the current position set in the memory 15 is located is used as the traveling link, and the low environmental load target value of the traveling link is obtained from the link data of the traveling link. (Step 502).
Then, the average fuel efficiency during the past predetermined period is calculated as the low environmental load environment travel (step 504). The average fuel consumption during the past predetermined period is obtained from the ECU 6 via the ECU interface via the ECU interface during the past predetermined period, the accelerator opening degree and the fuel injection amount during the past predetermined period acquired from the ECU 6 via the ECU interface 18. The acquired vehicle speed during the past predetermined period and the acceleration / deceleration situation obtained from this, the vehicle speed during the past predetermined period detected by the vehicle state sensor 4, the acceleration / deceleration situation obtained from this, and the vehicle speed during the past predetermined period. It is obtained according to the travel distance during the past predetermined period obtained from the above. However, when the fuel consumption information can be acquired directly from the ECU 6, the average fuel consumption during the past predetermined period may be obtained based on the fuel consumption.

  Next, when the low environmental load driving degree calculated in step 504 is larger than the low environmental load driving target value of the running link acquired in step 502 (step 506), the driving performance rank is “excellent”. (Step 518), when the low environmental load environmental travel calculated in step 504 is larger than the value obtained by multiplying the low environmental load travel target value of the running link acquired in step 502 by 0.8 (step 508), When the driving performance rank is set to “OK” (step 520) and the low environmental load driving degree calculated in step 504 is smaller than the value obtained by multiplying the low environmental load driving target value of the running link acquired in step 502 by 0.8. (Steps 506 and 508), the driving performance rank is set to “bad” (step 510).

  Then, the display color corresponding to the driving performance rank is set in the guide image generation unit 17 as the display color of the current position mark 402 (step 512). Here, in this embodiment, the display color set so that the density increases in the order of “excellent”, “possible”, and “bad” is used as the display color according to the driving performance rank. As described above, the guide image generation unit 17 draws the current position mark 402 in the guide image with the set display color.

  Then, it is checked whether or not there is an entry in which the link number of the running link is registered in the running record table in the memory 15 (step 514). The evaluation section and the travel performance rank determined in steps 518, 520, and 512 are additionally registered as evaluation information for each section (step 516). Here, the evaluation section is a section having the end point of the evaluation section of the evaluation information for each section registered last time as the start point and the current position as the end point.

  On the other hand, if there is no entry, after creating an entry in which the link number of the running link is registered in the travel record table (step 522), the evaluation section and the travel record rank are added to the travel record rank distribution of the entry. It registers as evaluation information for every section (step 516). Here, the evaluation section of the evaluation information for each section is a section having the end point in the direction opposite to the traveling direction of the traveling link as the start point and the current position as the end point.

Then, the process returns to step 502.
Heretofore, the low environmental load travel display processing performed by the control unit 16 has been described.
According to such a low environmental load travel level display process, the current position mark 402 displayed in the guide image is a display color that represents the degree of achievement of the current travel state with respect to the low environmental load travel target value of the traveling link. It will be represented by
Next, the link drawing process performed by the guide image generation unit 17 will be described.
FIG. 6 shows the procedure of the link drawing process.
As shown in the figure, in this process, when it is time to update the guide image (step 602), whether or not the guide route is being set is checked based on whether or not the route data of the guide route is set in the memory 15. (Step 604) If the guide route is being set, all the links to be drawn, that is, all the links in the map display range are drawn in a predetermined standard display color (Step 630), and the process returns to Step 602.

On the other hand, if the guide route is not being set (step 604), each of the links to be drawn (steps 606, 614, 616) is drawn as follows, and the process returns to step 602.
That is, it is checked whether or not the link is a link on the traveling direction side of the own vehicle among the links constituting the currently traveling road (route) (step 608). However, here, the traveling link is treated as not being a link on the traveling direction side of the own vehicle.
And if the link is a link on the traveling direction side of the own vehicle among the links constituting the road on which the link is currently traveling (step 608), the low environmental travel target of the link is obtained from the link data of the link. A value is acquired, and a target value rank of the acquired low environmental travel target value is calculated (step 610). Here, the target value rank is, for example, “high” for the target value rank of the low environmental travel target value of 25 or more, “medium” for the target value rank of the low environmental travel target value of 20 or more to less than 25, and less than 20 The target value rank of the low environmental driving target value is set as “low”.

Then, the link is drawn with a display color corresponding to the calculated target value rank (step 612). Here, in the present embodiment, a display color set so that the density increases in the order of “low”, “medium”, and “high” is used as the display color corresponding to the target value rank.
As a result, in the guidance image, each link on the traveling direction side of the currently traveling road is represented by a display color indicating the level of the low environmental travel target value of the link.
On the other hand, if the link is not a link on the traveling direction side of the own vehicle among the links constituting the road on which the vehicle is currently traveling (step 608), the link number of the link is registered in the travel performance table of the memory 15. (Step 618), and if registered, the travel performance rank distribution is acquired from the entry in which the link number of the link in the travel performance table is registered (step 620).

  Then, a link portion corresponding to each evaluation section registered in the evaluation information for each section of the travel performance rank distribution is drawn with a display color corresponding to the travel performance rank of the evaluation section (step 622). Here, in this embodiment, the display color set so that the density increases in the order of “excellent”, “possible”, and “bad” is used as the display color according to the driving performance rank.

  Then, it is checked whether or not the link is a traveling link (step 624). If the link is not a traveling link, a section that is not registered as an evaluation section in any section evaluation information on the link (the last link on the link). The portion of the link corresponding to the section traveled after calculating the low environmental load travel degree is drawn in the same display color as the portion of the link corresponding to the adjacent evaluation section on the link (step 628).

  On the other hand, if the link is a running link (step 624), the above-described target value rank of the link is obtained, and a section that is not registered as an evaluation section in any section evaluation information on the link (on the link) Finally, the section traveled after calculating the low environmental load travel degree and the section on the traveling direction side from the current position are drawn in a display color corresponding to the obtained target value rank (step 626).

As a result, in the guidance image, each section of each link of the road that has traveled to date is a display color that represents the achievement of the achievement level for the low environmental load travel target value of the link to which the section belongs when traveling in that section. It will be represented by
On the other hand, the link number of the link constituting the road on which the link is currently traveling is not registered in the traveling direction side of the own vehicle (step 608), and the link number of the link is also registered in the travel record table of the memory 15. If not (step 618), the link is drawn in the standard display color (step 630).

The link drawing process performed by the guide image generation unit 17 has been described above.
Next, the guidance route drawing process performed by the guide image generation unit 17 will be described.
Here, this guidance route drawing process is a process that is executed only during the period during which the guidance route is set. As shown in the drawing, if the timing of the guidance image update is reached in this process (step 702), For each link forming the guide route (steps 704, 712, and 714), the portion of the route graphic 403 corresponding to the link is drawn as follows, and the process returns to step 702.

  That is, it is checked whether or not the link number of the link is registered in the travel performance table of the memory 15 (step 706). If not registered, the low environmental travel target value of the link is obtained from the link data of the link. Then, a target value rank of the acquired low environment travel target value is calculated (step 708). Then, the portion corresponding to the link of the route graphic 403 of the guidance route is drawn with a display color corresponding to the calculated target value rank (step 710).

As a result, in the guidance image, each part on the traveling direction side from the current position of the guidance route is represented by a display color indicating the level of the low environmental travel target value of that part.
On the other hand, if the link number of the link is registered in the travel record table of the memory 15 (step 706), the travel record rank distribution is acquired from the entry in which the link number of the link is registered in the travel record table (step 706). 716).
Then, with respect to the evaluation information for each section of the travel performance rank distribution, a portion corresponding to each evaluation section of the route graphic 403 is drawn with a display color corresponding to the travel performance rank of the evaluation section (step 718).
Then, it is checked whether or not the link is a traveling link (step 720). If the link is not a traveling link, a section that is not registered as an evaluation section in any section evaluation information on the link (the last link on the link). The part of the route graphic 403 corresponding to the section traveled after calculating the low environmental load travel degree is drawn in the same display color as the part of the route graphic 403 corresponding to the adjacent evaluation section on the link (step 724). ).

  On the other hand, if the link is a running link (step 720), the above-described target value rank of the link is obtained, and a section that is not registered as an evaluation section in any section evaluation information on the link (on the link) Finally, the portion of the route graphic 403 corresponding to the section traveled after calculating the low environmental load traveling degree and the section on the traveling direction side from the current position is drawn with a display color corresponding to the calculated target value rank (step) 722).

As a result, in the guidance image, each section that has traveled to the present on the guidance route is displayed in a display color that represents the achievement level of the low environmental load travel target value of the link to which the section belongs when traveling in that section. Will be represented.
The guidance route drawing process performed by the guide image generation unit 17 has been described above.
Here, processing examples of the low environmental load travel display processing, link drawing processing, and guidance route drawing processing as described above will be shown.
Now, as shown in FIG. 8a, there are links A, B, C, D on the same road sequentially connected by nodes N1, N2, N3, and as shown in FIG. 8b, each link A, B, C , D, 22, 30, 15, and 20 are set as the low environmental travel target values.
Further, when traveling from link A to link D, the low environmental load running degree is 20, 32, 28 at x0 on link A, x1, x2 on link B, x3, x4 on link C, respectively. , 11 and 13 are calculated. However, in this example, in order to facilitate understanding of the explanation, the case where the distance between the positions where the low environmental load travel is calculated is relatively large, but in actuality, the low environmental load travel is calculated. More frequently, the distance between the calculated positions of the low environmental load running degree is sufficiently reduced.

  In this case, as shown in the figure, the target value ranks of the links A, B, C, and D are “high” as the target value rank of the low environmental travel target value of 25 or more, and the low environment of 20 or more and less than 25. The target value rank of the driving target value is “medium”, the target value rank of the low environmental driving target value less than 20 is “low”, and “medium”, “high”, “low”, and “medium” are obtained respectively. Become. In addition, according to the relationship between the low environmental load driving degree obtained at each point and the low load environmental driving target value of the link to which the point belongs, the driving performance rank is “possible” at x0 but “excellent” at x1. However, “possible” is obtained at x2, “bad” is obtained at x3, and “possible” is obtained at x4. In addition, the evaluation section corresponding to each travel performance rank is obtained by x1, the section from the point on the link A where the low environmental load travel degree is calculated immediately before the travel performance rank “possible” obtained by x0 to x0. For the driving performance rank “excellent”, the section from N1 to x1, for the driving performance rank “allowed” determined by x2, for the section from x1 to x2, for the driving performance rank “bad” calculated by x3 The section from N2 to x3 is the section from x3 to x4 with respect to the travel performance rank “possible” obtained at x4.

  In this case, when the guide route is not set, when the current position is located at x0, as shown in FIG. 9a1, the current position mark 402 is displayed with a medium concentration according to the driving performance rank “possible” obtained at x0. Displayed in color. Further, the section on the traveling direction side from the current position X0 of the link A, the link B, the link C, and the link D, which are portions on the traveling direction side from the current position X0 of the traveling road, are in the target value rank “of each link” Depending on “,” “high,” “low,” and “medium”, the display colors are medium density, high density, low density, and medium density.

  At the time when the current position has advanced to x1, as shown in FIG. 9a2, the current position mark 402 is displayed in a low-density display color according to the driving performance rank “excellent” obtained by x1. Further, the section on the traveling direction side from the current position x1 of the link B, that is, the link C and the link D, which is a portion on the traveling direction side from the current position X1 of the traveling road, has a target value rank “high”, “ Depending on “low” and “medium”, high density, low density and medium density are displayed. Further, x0-N1, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section on link A (an evaluation section with x0 as the end point). N1-x1, which is a road section that has traveled in a short time, is displayed in a low-density display color according to the travel performance rank “excellent” of the evaluation section N1-x1.

  Further, at the time when the current position has advanced to x2, as shown in FIG. 9a3, the current position mark 402 is displayed in a medium density display color according to the travel performance rank “possible” obtained at x2. Further, the section on the traveling direction side from the current position x2 of the link B, that is, the link C and the link D, which are portions on the traveling direction side from the current position X2 of the traveling road, have the target value ranks “high” and “ Depending on “low” and “medium”, high density, low density and medium density are displayed. Further, x0-N1, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section on link A (an evaluation section with x0 as the end point). N1-x1, which is a road section that has traveled in the past, is displayed in a low-density display color according to the travel performance rank “excellent” of the evaluation section N1-x1, and x1-x2 that is a road section that has traveled in the past is the evaluation section x1 -Displayed in medium density display color according to the x2 driving performance rank "OK".

  Further, at the time when the current position has advanced to x3, as shown in FIG. 9a4, the current position mark 402 is displayed in a high-density display color in accordance with the travel performance rank “defective” obtained at x3. Further, a section on the traveling direction side from the current position x3 of the link c, which is a portion on the traveling direction side from the current position X3 of the traveling road, the link D has a target value rank “low” and “medium” of each link. Correspondingly, the display colors are low and medium. Further, x0-N1, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section on link A (an evaluation section with x0 as the end point). N1-x1, which is a road section that has traveled in the past, is displayed in a low-density display color according to the travel performance rank “excellent” of the evaluation section N1-x1, and x1-N2 that has traveled in the past is on the link B N2-x3, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section x1-x2, and the travel performance rank “bad” of the evaluation section N2-x3 According to the high density display color.

  When the current position has advanced to x4, as shown in FIG. 9a5, the current position mark 402 is displayed in a medium density display color according to the travel performance rank “possible” obtained at x4. Further, the section on the traveling direction side from the current position x4 of the link c, which is a portion on the traveling direction side from the current position X4 of the traveling road, the link D has a target value rank “low” and “medium” of each link. Correspondingly, the display colors are low and medium. Further, x0-N1, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section on link A (an evaluation section with x0 as the end point). N1-x1, which is a road section that has traveled in the past, is displayed in a low-density display color according to the travel performance rank “excellent” of the evaluation section N1-x1, and x1-N2 that has traveled in the past is on the link B N2-x3, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section x1-x2, and the travel performance rank “bad” of the evaluation section N2-x3 According to the above, the high-concentration display color is displayed, and the road section x3-x4 that has traveled in the past is displayed in the medium-concentration display color according to the travel performance rank “possible” of the evaluation section x3-x4.

  Hereinafter, similarly, the current position mark 402 is displayed in a display color corresponding to the current driving performance rank, and the portion on the traveling direction side from the current position of the traveling road corresponds to the target value rank of the link to which each portion belongs. Displayed in the display color, each part of the road that has traveled in the past is displayed in a display color according to the travel performance rank obtained when traveling the part.

  In addition, when a guidance route is set, instead of the portion on the traveling direction side of the traveling road, the traveling direction side portion of the route graphic 403 representing the guidance route becomes the target value rank of the link to which each portion belongs. In accordance with the driving performance rank obtained when the part of the route figure 403 representing the guidance route instead of each part of the road that has traveled in the past is traveling in that part. It will be displayed in the display color. Therefore, the guide route that follows link A, link B, link C, and link D shown in FIG. 8a is set, and when the target value rank and the driving performance rank of each link are obtained as shown in FIG. When the position has advanced to x3, as shown in FIG. 9b, the current position mark 402 is displayed in a high-density display color according to the driving performance rank “bad” obtained by x3. In addition, the portion corresponding to the section on the traveling direction side from the current position x3 of the link c and the portion corresponding to the link D, which are the portions on the traveling direction side from the current position X3 of the route graphic 403, are the target values of the respective links. Depending on the rank “low” and “medium”, the display colors are low and medium. Further, the portion of the route graphic 403 corresponding to the road section x0-N1 on the guidance route that has traveled in the past follows the travel performance rank “possible” of the last evaluation section (an evaluation section with x0 as the end point) on the link A. The portion of the route figure 403 corresponding to N1-x1, which is a road section that has traveled in the past, is displayed in a low-density display color according to the driving performance rank “excellent” of the evaluation section N1-x1. The portion of the route figure 403 corresponding to x1-N2, which is a road section that has traveled in the past, is displayed in a medium density display color according to the travel performance rank “possible” of the last evaluation section x1-x2 on the link B. The portion of the route graphic 403 corresponding to N2-x3, which is a road section that has traveled in the past, is displayed in a high-density display color according to the travel performance rank “bad” in the evaluation section N2-x3.

The embodiment of the present invention has been described above.
By the way, in the above embodiment, the driving performance rank is changed according to the current position mark 402, the link, and the route graphic 403 by changing the display color density of the current position mark 402, the link, and the route graphic 403. The target value rank is expressed, but this makes the display position hue, saturation, brightness, pattern, and other arbitrary modification elements of the current position mark 402, the link, and the root graphic 403 different. Thus, the driving performance rank or the target value rank may be represented by the current position mark 402, the link, or the route graphic 403.

  In the above embodiment, the low environmental load travel target value is set in advance for the link. However, the low environmental load travel target value may be set in units of road sections or road points other than the link. . In addition, instead of setting the low environmental load target value in advance, the low environmental load target value of each road section or point may be calculated according to the road shape indicated by the map data.

  In the above embodiment, when the guidance route is set, the display of the link stops displaying the driving performance rank and the target value rank, but this also applies when the guidance route is set. You may make it continue expressing a driving performance rank and a target value rank by the display of a link.

  In the above embodiment, only the link on the traveling direction side of the road being traveled displays the target rank of the link by displaying the link. For a link, a road that is running, and a link that is connected to a road that is running on the traveling direction side, that is, a link that is estimated to run in the future, the target value rank of the link may be expressed by displaying the link.

It is a block diagram which shows the structure of the vehicle-mounted system which concerns on embodiment of this invention. It is a figure which shows the map data which the navigation apparatus concerning embodiment of this invention hold | maintains. It is a figure which shows the driving performance table which the navigation apparatus which concerns on embodiment of this invention hold | maintains. It is a figure which shows the example of a display screen of the navigation apparatus which concerns on embodiment of this invention. It is a flowchart which shows the low environmental load run degree display process which concerns on embodiment of this invention. It is a flowchart which shows the link drawing process which concerns on embodiment of this invention. It is a flowchart which shows the guidance route drawing process which concerns on embodiment of this invention. It is a figure which shows the operation example of the vehicle-mounted system which concerns on embodiment of this invention. It is a figure which shows the operation example of the vehicle-mounted system which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus, 2 ... Operation part, 3 ... Display apparatus, 4 ... Vehicle state sensor, 5 ... GPS receiver, 6 ... ECU, 11 ... Map data storage part, 12 ... Current state calculation part, 13 ... GUI control part , 14 ... route search unit, 15 ... memory, 16 ... control unit, 17 ... guide image generation unit, 18 ... ECU interface, 401 ... map image, 402 ... current position mark, 403 ... route figure, 404 ... destination mark.

Claims (10)

An in-vehicle system installed in an automobile,
Navigation means for displaying a guide image including a road map and a current position mark representing the current position on the road map;
For each road section, it has target setting means for setting a target value of fuel consumption when traveling on the road section,
The navigation means, each portion of the road graphic on the road map corresponding to each road section is different for different ranges of target values according to the target value set in the road section corresponding to the portion. An in-vehicle system characterized by displaying in a display form determined as described above. The in-vehicle system according to claim 1,
On the road map, the navigation means corresponds to each road section only for each road section estimated to run in the future, or only for each road section on the traveling direction side of the automobile of the currently running road. An in-vehicle system, wherein each part of the road graphic is displayed in a display form that is determined differently for different ranges of the target value according to the target value set in the road section corresponding to the part. An in-vehicle system installed in an automobile,
Navigation means for displaying a guide image including a road map, a current position mark representing a current position on the road map, and a route graphic representing a route to the destination on the road map;
For each road section, it has target setting means for setting a target value of fuel consumption when traveling on the road section,
The navigation means determines each part of the route graphic corresponding to each road section on the destination side from the current position of the route according to a target value set in the road section corresponding to the part. An in-vehicle system characterized by displaying in different display forms for different ranges. The in-vehicle system according to claim 1, 2, or 3,
At each time point, the vehicle has a degree of achievement calculation means for calculating the degree of achievement of the fuel efficiency of the vehicle at the time point with respect to the target value set in the road section running at the time point,
The in-vehicle system, wherein the navigation means displays the current position mark in a display form that is determined differently for different ranges of achievement depending on the achievement calculated by the achievement calculation means. The in-vehicle system according to claim 1, 2, or 3,
At each time point, the vehicle has a degree of achievement calculation means for calculating the degree of achievement of the fuel efficiency of the vehicle at the time point with respect to the target value set in the road section running at the time point,
For the road portion that has traveled in the past, when the navigation means has traveled each portion of the road graphic on the road map corresponding to the road portion that has traveled in the past on the road portion corresponding to the portion In addition, the vehicle-mounted system is displayed in a display form that is determined differently for different ranges of achievement according to the achievement calculated by the achievement calculation means. The in-vehicle system according to claim 1, 2, or 3,
At each time point, the vehicle has a degree of achievement calculation means for calculating the degree of achievement of the fuel efficiency of the vehicle at the time point with respect to the target value set in the road section running at the time point,
The navigation means displays the current position mark in a display form determined differently for different ranges of achievement according to the achievement calculated by the achievement calculation means, and for road portions that have traveled in the past Is the achievement level calculated by the achievement level calculation means when each portion of the road graphic on the road map corresponding to the road portion that has traveled in the past was traveling on the road portion corresponding to the portion. The vehicle-mounted system characterized by displaying in the display form determined differently with respect to the range with different achievement levels. The in-vehicle system according to claim 1, 2, 3, 4, 5 or 6,
The target value of fuel consumption set by the target setting means for each road section includes the road shape of the road section, the gradient of the road section, the type of road of the route to which the road section belongs, and the road that has traveled in the past An in-vehicle system, characterized in that it is determined according to at least one of average fuel consumption obtained for traveling in a section. A driving support method for supporting driving with a small environmental load of a user in an in-vehicle system mounted on an automobile,
For each road section, a target setting step for setting a target value of the state quantity of the vehicle related to the environmental load due to the traveling when traveling on the road section;
A guide image display step for displaying a guide image including a road map and a current position mark representing a current position on the road map;
In the guide image display step, each part of the road graphic on the road map corresponding to each road section is selected according to the target value set in the road section corresponding to the part, for different ranges of target values. Driving support method, characterized by displaying in different display formats. An in-vehicle system driving support method according to claim 8,
In the guide image display step, the road corresponding to each road section only for each road section estimated to be traveled in the future, or only for each road section on the traveling direction side of the automobile of the currently traveling road Driving in which each part of the road graphic on the map is displayed in a display form that is determined differently for different ranges of the target value according to the target value set in the road section corresponding to the part Support method. A driving support method for supporting driving with a small environmental load of a user in an in-vehicle system mounted on an automobile,
For each road section, a target setting step for setting a target value of the state quantity of the vehicle related to the environmental load due to the traveling when traveling on the road section;
A guide image display step for displaying a guide image including a road map, a current position mark representing a current position on the road map, and a route graphic representing a route to the destination on the road map;
In the guide image display step, each part of the route graphic corresponding to each road section on the destination side from the current position of the route is determined according to a target value set in the road section corresponding to the part. A driving support method, characterized by displaying in different display forms for different ranges of target values.