JP6536436B2 - Vehicle information display device - Google Patents

Description

  The present invention relates to a vehicular information display device for displaying information highly necessary for a driver of a vehicle on a map.

  Conventionally, as a vehicle information display device of this type, for example, a device described in Patent Document 1 is known. In this apparatus, while acquiring the attribute (for example, a main road, a narrow street, etc.) of the road to which a facility adjoins, the propriety of the display of corresponding facility information was judged based on the attribute of the road, and it was judged as display unnecessary. Facility information is thinned out from the display target. This suppresses duplication of facility information on a map and improves its visibility.

JP, 2009-14486, A

  By the way, it is not possible to judge the usefulness of the display for the driver who plans to travel the target point only by the judgment based on the attribute of the road as in the device described in the above-mentioned document, and the display of such information It may also cause people to feel bothersome.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an annoyance to the driver by suppressing the display of information presumed to be less useful to the driver of the vehicle. It is providing the information display apparatus for vehicles which can be reduced.

An information display apparatus for a vehicle that solves the above-mentioned problems is an information display apparatus for a vehicle that displays driving support information on a display together with map data registered in a map database, and the evaluation value regarding the ease of running of the vehicle Reading and acquiring from the easiness database the easiness database recorded for each point on the map based on the map data and the evaluation value for each point on the route from the departure point of the vehicle to the destination point In the vicinity of a point where the evaluation value acquisition unit and the evaluation value acquired through the evaluation value acquisition unit tend to be difficult to run, whether or not there is an avoidance route to the destination point avoiding the points that are difficult to run and determining avoidance unit or, if the bypass route by the avoidance unit is determined not to exist, the land where the bypass route is determined that there is no And a display information selecting unit to hide information display on the display unit of the evaluation value related.

  According to the above configuration, among the points on the route from the departure point of the vehicle to the destination point, the evaluation value regarding the ease of running of the vehicle tends to be hard to run, and the necessity of displaying information regarding the ease of running at the point Is not considered effective for the driver when the avoidance of the point in question is not possible. This makes it possible to reduce the annoyance of the driver due to excessive or unnecessary information display. In the present invention, the information display of the evaluation value regarding the easiness of running of the vehicle is performed only when it is possible to avoid the corresponding point by changing the travel route.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows schematic structure of one Embodiment of the information display apparatus for vehicles. The figure which shows an example of the setting content of a weight table. FIG. 7 is a view showing an example of display contents displayed on the display unit while referring to the weight table shown in FIG. 2; The flowchart which shows the process procedure of the information display process which the apparatus of the embodiment performs at the time of the setting of the destination. The flowchart which shows the process sequence of the information display process which the apparatus of the embodiment performs at the time of driving | running | working of a vehicle. The flowchart which shows the processing procedure of the judgment processing of the degree dependence on difficulty in running and the exception point which the device of the embodiment executes. The flowchart which shows the process sequence of the weight table production | generation process which the apparatus of the embodiment performs. The flowchart which shows the process procedure of the display information selection process which the apparatus of the embodiment performs.

Hereinafter, an embodiment of a vehicular information display device will be described with reference to the drawings.
The vehicle information display apparatus according to the present embodiment displays, as the driving support information, the evaluation value regarding the ease of running of the vehicle at each point on the map in a superimposed manner along with the map data registered in the map database. For this evaluation value, for example, images of the surroundings of the vehicle taken during traveling of a plurality of vehicles including the own vehicle and other vehicles are collected in the management center, and the image recognition processing is performed on the collected images in the management center side. It is obtained by digitizing by performing. Then, the vehicle transfers the route information from the departure place to the destination to the management center, acquires information on the evaluation value regarding the point on the route from the management center, and displays the information. Here, the evaluation value to be displayed is selected to have a value less than a predetermined value and to be hard to run. This is because it is more useful for the driver of the vehicle to use the evaluation value, which tends to be difficult to run, as information when determining whether or not the travel route has been changed. It should be noted that the selection of the evaluation value to be displayed also takes into consideration the degree of difficulty to avoid traveling, which indicates the degree of tendency of the driver to avoid a point where it is difficult to run. In addition, when the display of evaluation values of adjacent points is overlapped, the display of evaluation values set to low priority among the displays is thinned out to eliminate the overlap of the display of evaluation values with each other and the visibility thereof To improve the

First, the configuration of the apparatus of the present embodiment will be described with reference to the drawings.
As shown in FIG. 1, the vehicle 100 is provided with a navigation system 110 that guides the route of the vehicle 100. The navigation system 110 includes a route search unit 113 for searching for an optimal route from the current position of the vehicle 100 specified through the GPS (Global Positioning System) 111 to the destination operated through the input unit 112. . The route search unit 113 searches for the optimum route on the map data registered in the map database 114 using the Dijkstra method or the like while referring to the evaluation value of the ease of running at each point. Then, the navigation system 110 performs guidance on the optimal route searched by the route searching unit 113 through display of the guidance screen on the display unit 116 by the image processing unit 115 or output of voice guidance from the voice output unit 117. To The navigation system 110 outputs, as position information, information indicating position coordinates of the current position of the vehicle specified through the GPS 111 to the in-vehicle communication device 120 via an in-vehicle network such as a CAN (controller area network). . Further, the navigation system 110 determines the road link ID of each section on the optimum route searched by the route search unit 113 while referring to the map database 114, and sets the corresponding road link ID as route information. It is output to the on-vehicle communication device 120 via an in-vehicle network such as an area network. Then, the in-vehicle communication device 120 transfers the position information and the route information input from the navigation system 110 to the management center 200 as described above.

  In addition, the vehicle 100 includes an image acquisition unit 130 that captures a situation around the vehicle 100. The image acquisition unit 130 is, for example, an on-vehicle camera, and at the time of photographing an image, the corresponding road link ID is determined while referring to the map database 114 from the respective traveling positions of the vehicle specified through the GPS 111. Then, the image acquisition unit 130 outputs the acquired image data to the in-vehicle communication device 120 via the in-vehicle network, together with the corresponding road link ID and the information on the shooting date and time. Then, the in-vehicle communication device 120 transfers the image data from the image acquisition unit 130 to the management center 200 together with the road link ID and the information on the shooting date and time.

  In addition, the vehicle 100 includes a driver authentication unit 140 that personally authenticates a driver who operates the vehicle 100. The driver authentication unit 140 authenticates the driver individual by using the identification information of the electronic key of the vehicle, the voiceprint of the driver, the feature amount of the driver's face, and the like as input information in combination. Then, the driver authentication unit 140 outputs the authentication data of the driver individual to the in-vehicle communication device 120 via the in-vehicle network while associating the authentication data of the driver individual with the information of the vehicle ID used to identify the vehicle 100. Then, the in-vehicle communication device 120 transfers the driver's individual authentication data from the driver authentication unit 140 to the management center 200 in a state of being associated with the vehicle ID.

  On the other hand, the management center 200 has a center communication device 210 that communicates with the in-vehicle communication device 120, and outputs the image data received through the center communication device 210 to the easiness of running calculation unit 220.

  The easiness of running calculation unit 220 performs image recognition processing on image data input from the center communication device 210, thereby prescribing conditions indicated by the image data, for example, for each of the road environment, traffic conditions, and weather conditions. Analyze each item that has been In addition, as an item of the road environment, various elements that affect the prospect of the road, such as the installation situation of the power pole, the situation of the road parking such as bicycle parking and stalls, street parking, road construction, the layout situation of the building It is prescribed. In addition, as the item of traffic condition, various elements that obstruct the running of the vehicle, such as the number and nature of pedestrians and bicycles (avoid / avoid vehicles, etc.), the ratio of large vehicles and route buses, etc. are defined. ing. Further, as the item of the weather condition, there are factors of poor visibility such as backlit, thunderstorm, snowstorm, and thick fog, influencing factors on driving operation such as strong wind and road surface freezing, and various conditions such as weather conditions such as rainy weather and snowfall. The elements are defined. Then, the easiness of running calculation unit 220 calculates an index for each of these items and calculates the sum of those indices as the easiness of running score, and also executes the easiness of running score in descending order of the degree of easy running. "R", "B", "C", "D", and "E" are ranked in five stages to calculate the driving ease level. The level of ease of running thus calculated corresponds to the evaluation value of the ease of running of the vehicle, and is easy to run together with the information on the road link ID associated with the image data to be evaluated and the shooting date and time. It is stored in the ease of operation database 230 from the calculation unit 220.

  The rungability level stored in the rungability database 230 is used for the rungability avoidance dependency determination unit 240 to determine the rungability dependency degree of the driver of the vehicle. The determination of the degree of avoidance dependency is performed when the vehicle 100 travels. In this determination, the difficulty in avoiding travel dependency determining unit 240 first refers to the road link ID included in the route information of the vehicle acquired via the center communication device 210, and facilitates running corresponding to each point on the optimal route. Level information is obtained from the ease of operation database 230. Then, the travel difficulty avoidance dependency degree determination unit 240 extracts, from among these points, a point at which the ease of running level is less than a predetermined level (level “B” in the present embodiment) and tends to be difficult to run. .

  In addition, when the vehicle 100 avoids and passes these extracted points, the driving difficulty avoidance dependency degree determination unit 240 determines that the driver tends to avoid the points where it is difficult to run and the driving difficulty is difficult. Correct the degree of avoidance dependency. Here, the travel difficulty avoidance dependency degree determination unit 240 periodically acquires the position information of the vehicle 100 via the center communication device 210, and refers to the map database 260 to find the current position of the vehicle on the map data. Is monitoring. Then, the traveling difficulty avoidance dependence degree determination unit 240 passes the vehicle 100 around the target point on condition that the current position of the vehicle deviates from the range of the predetermined distance centered on the target point. It is determined that you did not do it.

  On the other hand, when the vehicle passes these extracted points without avoiding the traveling, the driver determines whether the driving difficulty is determined by satisfying all the following conditions (a) to (c): It is determined that there is no tendency to avoid difficult points, and the degree of difficulty in avoiding travel is corrected downward.

(A) There is an avoidance route near the target point.
(B) The target point is not a point at which the driver regularly travels.
(C) The degree of dependence on avoidance of travel that was previously set by the driver tends to be low.

  Here, if the condition (a) is set is that there is no avoidance route in the vicinity of the target point, the driver should drive the point even if the point tends to be difficult to run. This is because it is thought that relevance is low as to whether or not the driver himself tends to avoid a point where it is difficult to run, which is only inevitable. In addition, determination of the presence or absence of an avoidance route is, for example, setting a target point as a travel impossible point and searching again for the optimum route from the departure point to the destination, a new optimum route obtained by the search It is performed based on whether the amount of increase in cost (distance, time, etc.) is less than a predetermined threshold.

  In addition, if condition (b) is set because the target point is a point where the driver regularly travels, the driver has the reason that the point is on the commuting route, etc. This is because it is considered that relevance is low as to whether or not the driver himself tends to avoid a point where it is difficult to run, although he is only traveling regularly. In addition, determination of whether it is a point which drive | works customarily, for example, records the travel history of a vehicle as a log, and it is based on whether the passing frequency of the target point is more than a predetermined threshold. Be done.

  In addition, condition (c) is set even if the vehicle passes through a point where it is difficult to run despite the tendency for the driver to have difficulty in running and the degree of dependence on avoidance being high. It is because it is difficult to think that the passing of the point is an exceptional case and reflects the driver's own driving characteristics.

  The degree of dependence on avoidance of driving determined as described above represents the degree of tendency of the driver to avoid a point where it is difficult to run, and is information unique to each driver. Therefore, the difficulty in avoiding run dependency determination unit 240 adds the result of determination of the degree of runaway avoidance dependency to the vehicle ID received from the vehicle 100 and also takes into account the authentication data of the driver individual associated with the vehicle ID. Are stored in the driving difficulty avoidance degree database 250 while being distinguished for each driver.

Further, when the vehicle 100 travels, in addition to the above-described determination of the degree of dependence on difficulty in traveling, determination of an exceptional point is also performed as a point to be excluded from display targets of evaluation values related to easiness of traveling. In the determination of the exceptional point, first, the exceptional point determination unit 270 determines that the point is the exceptional point on the condition that the point extracted as described above does not satisfy the condition of the above (a) or (b). . As described above, the exceptional point determination unit 270 determines the easiness of avoiding by changing the traveling route at a point where the easiness of running tends to be hard to run in that it is determining whether the above condition (a) is satisfied. Corresponds to the “avoidance determination unit” that

  Here, if condition (a) is set, if there is no avoidance route in the vicinity of the target point, the driver should drive the same point even if the point tends to be difficult to run. It is because it is thought that the usefulness of the information display regarding the ease of running at the same point is low.

  In addition, if condition (b) is set only when the target point is a point where the driver regularly travels, even if the point tends to be difficult to drive as the driver This is because it is necessary to drive at the same point, and it is considered that the usefulness of displaying information on ease of running at the same point is low.

  Note that whether or not there is an avoidance route in the vicinity of the target point is general-purpose information applied to many drivers. Therefore, when the exceptional point determination unit 270 determines the exceptional point based on the condition (a), the exceptional point determination unit 270 distinguishes the point on a vehicle basis based on the vehicle ID received from the vehicle 100 and stores it in the exceptional point database 280.

  On the other hand, it is information specific to each driver whether or not the target point is a point where the driver regularly travels. Therefore, when the exceptional point determination unit 270 determines the exceptional point based on the condition (b), the exceptional point is added to the vehicle ID received from the vehicle 100 and the authentication data of the driver individual associated with the vehicle ID is obtained. It is stored in the exception point database 280 while discriminating for each driver by taking into consideration.

  Then, the management center 200 is easy to run while using the information on the degree of dependence on avoidance of running difficulty stored in the degree of running avoidance dependency database 250 and the information on the exceptional point stored in the exceptional point database 280. The weight table TA which defines the priority of the information related to the distance is generated through the weight table generation unit 290.

Specifically, the weight table generation unit 290 refers to the road link ID included in the route information of the vehicle acquired via the center communication device 210, and the information on the easiness of running corresponding to each point on the optimum route. The ease of running is acquired from the database 230. In addition, weight table generation unit 290 extracts, from among these points, points that are less likely to be run and have a tendency to run less than a predetermined level (in the present embodiment, level “B”), and extract those points. Weighting is performed in ascending order of easiness levels (in order of decreasing degree of easiness of driving). Here, when the degree of dependence on difficulty in running read out from the degree-of-run avoidance dependency database 250 is higher than a predetermined threshold and tends to be high, the weight table generation unit 290 generates an exception among points on the optimum route. The exception points read out from the point database 280 are excluded from display targets. On the other hand, when the degree of difficulty in avoiding running read from the degree-of-run avoidance dependency database 250 is lower than the predetermined threshold and tends to be low, the weight table generation unit 290 easily runs among points on the optimum route. Exclude from display except for the point with the lowest level.

  Here, the reason for changing the condition of the point to be displayed according to the degree of difficulty in running is as follows. That is, when there is a tendency to be highly dependent on driving difficulty, information on the points where it is difficult for the driver to use is highly useful, and the conditions of the points to be displayed are relaxed to display information on many points. Is considered desirable. On the other hand, when the degree of dependence on avoidance of driving difficulty tends to be low, the usefulness of the information on the point where it is difficult for the driver to drive is low, and the condition of the point to be displayed is made strict to make the driver bothersome by information display. It is considered desirable not to give

  Then, the weight table generation unit 290 combines the rungability level of the point to be displayed with the road link ID associated with the image data as the evaluation source and the information related to the shooting date and time, and the runability database 230. Then, the information is associated to generate a weight table TA. Thus, the weight table TA generated by the weight table generation unit 290 is distributed from the management center 200 to the target vehicle 100 via the center communication device 210.

  Vehicle 100 transfers weight table TA distributed from management center 200 from in-vehicle communication device 120 to display information selection unit 150. If the weight table TA has not been distributed from the management center 200 before that time, the display information selection unit 150 holds the weight table TA distributed from the management center 200 as the latest weight table. When the display information selection unit 150 already has the weight table TA distributed from the management center 200 before that, the display information selection unit 150 updates the weight table TA to the weight table TA newly distributed from the management center 200. . And the display information selection part 150 selects the point used as the display object of the information regarding easiness of running, referring the newest weight table TA. The information of the selection result by the display information selection unit 150 is output to the image processing unit 115, and is used for generating display data on the display unit 116 by the image processing unit 115.

  FIG. 2 shows an example of setting contents of the weight table TA which the display information selecting unit 150 has. FIG. 3 shows an example of display content displayed on the display unit 116 while referring to the weight table shown in FIG.

  In the example shown in FIG. 3, among the points which tend to be hard to run on the optimum route set for the vehicle, P1 (X1, Y1), P2 (X2, Y2), P3 as points closer to the current location PA of the vehicle. Six points of (X3, Y3), P4 (X4, Y4), P5 (X5, Y5), and P6 (X6, Y6) are displayed. Here, in the example shown in the figure, among these points, P3 (X3, Y3) and P4 (X4, Y4), and (X5, Y5) and (X6, Y6) are close on the map data. ing. Therefore, if it is attempted to display all the display icons of the easiness of driving level regarding these points, the display icons may overlap depending on the display scale of the map data.

  As apparent from the weight table TA shown in FIG. 2 in this respect, comparing the point P3 with the point P4, the easiness of driving the level "E" at the point P3 is the easiness of driving the level "D" at the point P4. The degree of ease of running is lower than that. Therefore, the priority as the display target is higher at point P3 than at point P4. As a result, although there is a tendency that it is difficult to run at the point P4, the point P4 is excluded from the display targets of the ease of running level.

  Further, as is also apparent from the weight table shown in FIG. 2, when the point P5 and the point P6 are compared, the runnability levels at both points P5 and P6 are both “D”. However, the acquisition date "2016/1/21/9: 00" of the image data as the evaluation source of the easiness level at the point P6 acquires the image data as the evaluation source of the easiness level at the point P5. The elapsed time to the present time is shorter than the date and time "2016/1/21/7: 40" and the freshness of the information is higher. Therefore, the priority as the display target is higher at point P6 than at point P5. As a result, although there is a tendency that it is difficult to run at the point P5, the point P5 is excluded from the display targets of the ease of running level.

  Therefore, in the display contents shown in FIG. 3, even if the map data includes the adjacent points, the display icons of the easiness of running level concerning those points do not overlap each other, and the improvement of the visibility is shown in FIG. It is done.

  Next, as an operation example of the present embodiment, a specific processing procedure will be described for the information display process executed by the vehicle 100 in cooperation with the management center 200. Vehicle 100 performs the information display process shown in FIGS. 4 and 5 at a predetermined cycle.

  First, as shown in FIG. 4, when the destination is set in the vehicle 100 (step S100), route information regarding the optimal route from the departure location of the vehicle 100 to the destination is transferred from the vehicle 100 to the management center 200 (step S200). ). When the management center 200 acquires route information from the vehicle 100 (step S300), the management center 200 extracts the difficult-to-run points on the route with reference to the easiness of running database 230 (step S400). Subsequently, an exception while referring to the vehicle ID acquired from the vehicle 100 and the authentication data of the driver individual associated with the vehicle ID as an exception point which is not a display target of information related to the easiness to drive among the extracted points The corresponding point is extracted from the point database 280 (step S500). In addition, as information on the degree of difficulty in avoiding travel of the driver of the vehicle, the degree of dependence on difficulty of running while referring to the vehicle ID similarly acquired from the vehicle 100 and the authentication data of the driver individual associated with the vehicle ID. The corresponding information is acquired from the database 250 (step S600). Then, the weight table generation process is executed while referring to the information on the exceptional point extracted in the previous step S500 and the information on the degree of difficulty in avoiding the run acquired in the previous step S600 (step S700). Then, the weight table TA generated by the process of the previous step S700 is distributed from the management center 200 to the vehicle 100 (step S800). When the vehicle 100 acquires the weight table TA distributed from the management center 200 (step S900), the vehicle 100 executes display information selection processing while using the acquired weight table TA (step S1000), and the information shown in FIG. End the display process.

  Further, as shown in FIG. 5, when the vehicle 100 travels, position information of the vehicle specified through the GPS 111 is transferred from the vehicle 100 to the management center 200 (step S100A). When the management center 200 acquires the position information from the vehicle 100 (step S200A), the management center 200 executes the process of determining the degree of difficulty in avoiding travel and the exception point while grasping the current position of the vehicle based on the position information. S300A). Then, the weight table generation process is executed while referring to the information on the degree of difficulty in avoiding run and the information on the exceptional point obtained by the determination process in the previous step S300A (step S400A). Then, the weight table TA generated in the previous step S400A is distributed from the management center 200 to the vehicle 100 (step S500A). When the vehicle 100 acquires the weight table TA newly distributed from the management center 200, the vehicle 100 updates the acquired weight table TA as the latest weight table (step S600A). Then, after executing the display information selection process while using the updated weight table TA (step S700A), the information display process shown in FIG. 5 is ended.

Next, a specific processing procedure will be described for the determination processing of the degree of difficulty in avoiding travel and the exceptional point shown in FIG.
As shown in FIG. 6, in this determination processing, first, the management center 200 presents difficult-to-run points on the route (step S301A), and the vehicle 100 passes the nearest point among those points. It is determined (step S302A). Then, when it is determined that the vehicle 100 avoids the point and does not pass (step S302A = NO), the difficulty of traveling is corrected upward (step S303A), and the determination process illustrated in FIG. Do. On the other hand, when it is determined that the vehicle 100 has passed the point (step S302A = YES), it is determined whether there is an avoidance route in the vicinity of the passing point (step S304A). Then, when it is determined that there is no avoidance route in the vicinity of the point (step S304A = NO), the exception flag is set as the same point can not be avoided (step S305A), and the determination process shown in FIG. On the other hand, when it is determined in the previous step S304A that there is an avoidance route (step S304A = YES), it is determined whether or not the point is a point where the driver customarily travels (step S306A). Then, when it is determined that the target point is a point where the user customarily travels (step S306A = YES), the exception flag is set to the point without changing the degree of dependence on avoidance of driving (step S307A), the determination process shown in FIG. 6 ends. On the other hand, if it is determined in the previous step S306A that the target point is not the point where the vehicle customarily travels (step S306A = NO), whether the degree of difficulty in traveling that the driver set is high at that time is high It is determined whether or not it is (step S308A). Then, when it is determined that the difficulty in avoiding run is high (step S308A = YES), the determination processing shown in FIG. 6 is ended without changing the degree of dependency for avoidance of run as an exceptional case (step S309A). . On the other hand, when it is determined that the degree of difficulty in avoiding travel is low (step S308A = NO), the degree of dependence on avoidance of running is corrected downward (step S310A), and the determination process shown in FIG.

Next, a specific processing procedure of the weight table generation processing shown in FIGS. 4 and 5 will be described.
As shown in FIG. 7, in the weight table generation processing, the management center 200 first extracts the latest information stored in the easiness of running database 230 about the information on the difficult-to-run points on the route (step S701). ). Subsequently, weighting is performed on the points where the information on the easiness of running is extracted in the ascending order of the easiness of driving (in the order of the low degree of easiness of running) (step S702). Here, when it is determined that the degree of difficulty in avoiding running which is set by the driver is high (step S703 = YES), if the route includes an exception point (step S704 = YES), these exception points are selected. After excluding from the display target (step S 705), a weight table is generated (step S 707). As described above, the exception point is excluded from the display target including the point where the avoidance by the change of the traveling route is not possible for the point that tends to be difficult to run in step S305A of FIG. As a result, while the weight table is referred to, the display target is selected with the points for which the avoidance by the change of the travel route is not permitted as the non-display. On the other hand, when it is determined that the degree of dependence on avoidance of travel which is set by the driver is low (step S703 = NO), display is made at points other than the one with the lowest easiness level among the hard-to-run points on the route After excluding from the object (step S706), a weight table is generated (step S707).

Next, a specific processing procedure of the display information selection process shown in FIGS. 4 and 5 will be described.
As shown in FIG. 8, in the display information selection process, the vehicle 100 first extracts points as candidates for display while referring to the weight table TA (step S1001). Then, while acquiring the information of the size of the display icon regarding the easiness of driving | running | working level about each point (step S1002), the information of the display scale of the map data currently displayed on the display part 116 is acquired (step S1003). Then, using these acquired information, it is determined whether or not the display icons overlap on the map data (step S1004). When it is determined that there is no overlap between the display icons (step S1005 = NO), the point selected as the candidate for display in the previous step S1001 is selected as the display without changing the display target at all. Then, the display information selection process shown in FIG. 8 is ended. On the other hand, when it is determined that there is an overlap between the display icons (step S1005 = YES), whether the weighting table TA has different weighting degrees at points where the display icons overlap, that is, the easiness of running at those points Are determined (step S1006). Then, when the degree of weighting is different (step S1006 = YES), only the point with high degree of weighting among those points, that is, the point with relatively low easiness level is selected as the display target (step S1007) And the display information selection process shown in FIG. Also, when the degree of weighting is the same (step S1006 = NO), from those points where the freshness of the information on the easiness of driving level is high, that is, from the shooting time of the image data as the evaluation source of the easiness of driving After selecting only a point having a short elapsed time as a display target (step S1008), the display information selection process shown in FIG. 8 is ended.

As described above, according to the above-described embodiment, the following effects can be obtained.
The weight table generation unit 290 reads out and acquires the ease of running of each point on the route from the departure point of the vehicle 100 to the destination from the ease of running database 230. Then, the display information selection unit 150 refers to the weight table generated by the weight table generation unit 290, and among the points where the easiness level tends to be difficult to run, the easiness to run level is determined for the points determined to be unavoidable. It chooses to hide information display about. That is, among the points on the route from the departure point of the vehicle 100 to the destination point, the ease of running tends to be hard to run, and there is a high need for displaying information regarding the ease of running at the point. Also, the information display is not performed assuming that the usefulness is low for the driver when the avoidance of the point is considered impossible. This makes it possible to reduce the annoyance of the driver due to excessive or unnecessary information display. In this case, the information display of the easiness of driving level is performed only when it is possible to avoid the corresponding point by changing the travel route.

The above embodiment can also be implemented in the following form.
In the above embodiment, the easiness of running calculation unit 220 calculates the easiness of running score based on the image data acquired through the image acquisition unit 130. Instead of this, the ease of running calculation unit 220 may calculate the ease of running score based on vehicle data reflecting the presence or absence of another vehicle or a passerby. As such vehicle data, for example, “maximum minimum difference of steering angle”, “operation time of steering angle”, “maximum minimum difference of estimated vehicle body acceleration”, “maximum value of estimated vehicle body acceleration”, “accelerator opening degree” Maximum value, "maximum minimum difference in speed", etc. may be mentioned.

  In the above-described embodiment, it is determined whether or not each point tends to be difficult to run based on the runnability level in which the runnability score is ranked in a plurality of stages. Instead of this, it is determined whether each point tends to be difficult to run based on whether or not the runability score itself is equal to or more than the predetermined value without conversion processing to the runnability level. You may

  In the above embodiment, the presence or absence of display of the display icons is determined on the condition that the display icons of the easiness of driving overlap with each other. Instead of this, the priorities set in the weight table TA for the display icons on the map data displayed on the display unit 116 are compared regardless of whether the display icons related to the easiness of driving overlap or not. The presence or absence of display may be determined.

  In the above embodiment, the management center 200 manages data on the ease of running of each point on the route from the departure point of the vehicle to the destination as the ease database 230 for running. Instead of this, data on the ease of running at each point may be periodically distributed from the management center 200 to the vehicle 100, and the data on the ease of running may be managed as a database of easy running on the vehicle 100. In this case, even if the destination is set in the vehicle 100, it is not necessary to transfer information on the route from the vehicle's departure point to the destination from the vehicle 100 to the management center 200.

  In the above-described embodiment, the management center 200 determines the degree of difficulty in avoiding run and the management center 200 manages the result of the determination as the degree of avoidance database 250 for prevention of running. Instead of this, the vehicle 100 may perform determination of the degree of difficulty in avoiding travel and management of the determination result.

  In the above embodiment, the control center 200 determines the exception point, and the management center 200 manages the determination result as the exception point database 280. Instead of this, the vehicle 100 may perform the determination of the exceptional point and the management of the determination result.

  100 vehicle 100 navigation system 111 GPS 112 input unit 113 route search unit 114 map database 115 image processing unit 116 display unit 117 audio output unit 120 vehicle communication Aircraft 130: Image acquisition unit 140: Driver authentication unit 150: Display information selection unit 200: Management center 210: Center communication device 220: Ease of running calculation unit 230: Ease of running database 240: Running difficulty avoidance dependence determination unit 250 ... running difficulty avoidance dependence database 260 ... map database 270 270 exceptional point determination unit 280 exceptional point database 290 weight table generation unit TA weight table.

Claims (1)

A vehicle information display device for displaying driving support information on a display together with map data registered in a map database,
A runability database in which evaluation values regarding the runnability of the vehicle are recorded for each point on the map based on the map data;
An evaluation value acquisition unit that reads and acquires an evaluation value for each point on the route from the departure point of the vehicle to the destination point from the runability database;
Avoidance determination to determine whether or not there is an avoidance route to the destination point by avoiding a point having a tendency to not run easily in the vicinity of a point to which the evaluation value acquired through the evaluation value acquisition unit tends to run hard. Department,
A display information selection unit that hides information display on the display about an evaluation value related to a point determined that the avoidance route does not exist when the avoidance determination unit determines that the avoidance route does not exist ; An information display apparatus for a vehicle, comprising: