Display and Guidance System

Abstract

To provide a display guide system capable of performing the guidance in an area where a ratio of non-traveling is high.SOLUTION: A display guide system includes: an acquisition part for acquiring all road links which are all road links to be investigated in each predetermined area, and already traveled links which are road links already traveled by a road survey vehicle in each area; and a display guide part for causing a display part to display comparison information for comparing the all road links with the already traveled links based on the acquired all road links and the acquired already traveled links for each area.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a display guidance system. [Background technology]

[0002] Patent document 1 describes an information processing device that detects physical quantities such as vibrations and sounds generated when a tire comes into contact with the road surface while a vehicle is moving, and acquires abnormalities in the road surface based on information on the detected physical quantities. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-144601 Summary of the Invention [Problem to be solved by the invention]

[0004] Road surface abnormalities are acquired based on information obtained by vehicle movement, such as in the information processing device described in Patent Document 1. On the other hand, road surface abnormalities in areas where the vehicle has not yet moved are acquired when the vehicle moves into the area where the vehicle has not yet moved, but there is no means of knowing the areas where the vehicle has not yet moved.

[0005] The present invention has been made in view of the above-mentioned problems, and has an object to provide a display guidance system that can guide users through areas where a high proportion of vehicles have not yet been driven. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the display guidance system includes an acquisition unit that acquires all road links, which are all road links to be surveyed in each specified area, and traveled links, which are road links that have been traveled by a road survey vehicle in each area, and a display guidance unit that displays comparison information for each area, based on the acquired all road links and the acquired traveled links, to compare the all road links and the traveled links.

[0007] That is, the display guidance system displays comparison information for comparing all road links, which are all road links to be investigated, with traveled links, which are road links on which the vehicle has traveled, on the display unit of the user terminal. This allows the user to understand areas with a relatively high proportion of untraveled roads by checking the comparison information displayed on the display unit. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing a configuration of a display guidance system. [Figure 2] FIG. 10 is a diagram illustrating an example of comparison information. [Figure 3] 10 is a flowchart illustrating an example of processing in the display guidance system. [Figure 4] 10 is a flowchart illustrating an example of processing in a user terminal. [Figure 5] FIG. 10 is a diagram for explaining a first modified example of comparison information. [Figure 6] FIG. 10 is a diagram for explaining a second modified example of the comparison information. [Figure 7] FIG. 10 is a diagram illustrating a third modified example of the comparison information. DETAILED DESCRIPTION OF THE INVENTION

[0009] Here, the embodiments of the present invention will be described in the following order. (1) Display and guidance system configuration: (2) Flowchart: (3) Other embodiments:

[0010] (1) Display and guidance system configuration: FIG. 1 is a block diagram showing the configuration of a display guidance system 10 according to the present invention. In this embodiment, the display guidance system 10 is configured with a server computer. The display guidance system 10 is capable of communicating with both a vehicle 100, which provides a driving history including the location and date and time of driving, and a user terminal 200 used by a user. Although FIG. 1 shows one vehicle 100 and one user terminal 200, the display guidance system 10 may be capable of communicating with a plurality of vehicles 100 and a plurality of user terminals 200.

[0011] The configurations of the vehicle 100, the user terminal 200, and the display guidance system 10 will be described.

[0012] Vehicle 100 is a so-called probe car, and includes a communication unit 110 and a positioning unit 120. Vehicle 100 also includes a recording medium 130 that stores map information and a driving history. Communication unit 110 is a wireless communication circuit for performing wireless communication with at least display guidance system 10. Positioning unit 120 includes positioning sensors such as a GNSS receiver, a vehicle speed sensor, and a gyro sensor.

[0013] The GNSS receiver is a device that receives signals from the Global Navigation Satellite System. The GNSS receiver receives radio waves from navigation satellites and outputs signals for calculating the current position of the vehicle 100 via an interface (not shown). The vehicle speed sensor outputs a signal corresponding to the rotational speed of the wheels of the vehicle. The gyro sensor detects angular acceleration of the vehicle turning in a horizontal plane and outputs a signal corresponding to the orientation of the vehicle. The vehicle 100 acquires the current position of the vehicle 100 on the road on which it is traveling, using a control unit (not shown), based on map information and a self-contained navigation trajectory, which is a trajectory of position estimated based on signals output from the vehicle speed sensor and the gyro sensor.

[0014] The map information includes node data indicating the positions of nodes set on the roads on which the vehicle 100 travels, shape interpolation point data indicating the positions of shape interpolation points for identifying the shapes of roads between nodes, link data indicating the connections between nodes, and facility data indicating the positions of facilities on and around the roads.

[0015] The driving history includes time-series position information of the vehicle 100, which is the trajectory of the vehicle 100 at regular intervals or regular periods of time. Specifically, the vehicle 100 identifies the vehicle's current position and the section (road link ID) on which the vehicle is traveling at regular intervals or regular periods of time based on output signals from the GNSS receiver, vehicle speed sensor, and gyro sensor and known map matching. The vehicle 100 also acquires the time of passing the start node and the end node of the section from a timing unit (not shown). The vehicle 100 then generates a driving history by associating the vehicle's identification information (vehicle ID) with the identified current position, road link, and current date and time. The vehicle 100 temporarily stores the generated driving history in the recording medium 130 and transmits the driving history to the display guidance system 10 at a predetermined timing. The transmitted driving history is stored in the recording medium 30 of the display guidance system 10.

[0016] The user terminal 200 is a terminal used, for example, by a person who patrols for road surface abnormalities or by an administrator in a local government who manages roads under the jurisdiction of the local government. In this embodiment, the user terminal 200 may be a PC, a smartphone, a tablet terminal, or the like. The user terminal 200 includes a communication unit 210, a control unit 220, and a user I / F unit 230. The control unit 220 includes a CPU, a ROM, a RAM, and a recording medium, and the CPU can execute various programs including a navigation program recorded in the ROM or recording medium.

[0017] The communication unit 210 includes a communication circuit for wireless communication with other devices. The user terminal 200 is capable of communicating with at least the display and guidance system 10 via the communication unit 210. The user I / F unit 230 is an interface unit through which a user of the user terminal 200 inputs instructions and provides the user with various information. The user I / F unit 230 includes a display unit 240 that displays maps and comparison information (described later), and input units (not shown) such as switches, a keyboard, and a speaker.

[0018] The control unit 220 acquires the comparison information from the display guidance system 10 every time a certain period of time elapses, and causes the display unit 240 to display the comparison information.

[0019] The display guidance system 10 includes a control unit 20 including a CPU, RAM, ROM, etc., a recording medium 30, and a communication unit 40, and the control unit 20 can execute programs stored in the recording medium 30 or the ROM. In this embodiment, the control unit 20 can execute a display guidance program 21 as this program. The communication unit 40 includes a circuit for communicating with other devices, and the control unit 20 can communicate with the vehicle 100 and the user terminal 200 by processing the display guidance program 21.

[0020] The recording medium 30 includes map information 30a and a driving history 30b. The map information 30a includes node data, shape interpolation point data, link data, facility data, etc. The driving history 30b is a driving history received from the vehicle 100, and includes time-series position information of the vehicle 100.

[0021] The control unit 20 of the display guidance system 10 can execute various programs stored in the recording medium 30 or ROM. The control unit 20 of this embodiment can execute a display guidance program 21 as an example of this program. The display guidance program 21 includes an acquisition unit 21a and a display guidance unit 21b to display comparison information (e.g., a travel coverage rate, which is the ratio of traveled road links to all road links to be investigated) for comparing all road links to be investigated on the display unit 240 of the user terminal 200. Note that, hereinafter, processes described as being performed by the acquisition unit 21a and the display guidance unit 21b are processes realized by the control unit 20.

[0022] Using the function of the acquisition unit 21a, the control unit 20 acquires all road links (hereinafter referred to as all road links) to be surveyed in each zone of the target area, which is an area designated by the administrator as a target, and calculates the total length of roads for each zone. Specifically, the acquisition unit 21a pre-classifies the map indicated by the map information 30a into a plurality of rectangular zones (also called meshes or parcels), and acquires all road links to be surveyed that exist in one of the plurality of rectangular zones. The acquisition unit 21a then calculates the total length of roads, which is the length of all the acquired road links. Similarly, the acquisition unit 21a acquires all road links to be surveyed that exist in each of the other rectangular zones among the plurality of rectangular zones, and calculates the total length of the roads. The size of each rectangular zone may be assumed to be, for example, 500m square.

[0023] Furthermore, the acquisition unit 21a acquires, for each area, road links that have been traveled by the vehicle 100, which is a road inspection vehicle (hereinafter referred to as traveled links). Specifically, the acquisition unit 21a refers to the travel history 30b, and identifies the traveled links from the time-series position information of the vehicle 100 included in the travel history 30b.

[0024] Using the function of the display guidance unit 21b, the control unit 20 displays, for each area, comparison information for comparing all road links with the traveled links on the display unit 240 of the user terminal 200, based on all the acquired road links and the acquired traveled links. The display guidance unit 21b determines, for each road link in the area, whether the vehicle 100 has traveled on the road to be investigated within a predetermined period (for example, within one month). Specifically, the display guidance unit 21b identifies the road link to be investigated in the area from the traveled links of the vehicle 100 acquired by the acquisition unit 21a, and determines whether the vehicle 100 has traveled on the identified road link within the predetermined period. Then, when the display guidance unit 21b determines that the vehicle 100 has traveled on the identified road link within the predetermined period, it accumulates the distance of the traveled road link.

[0025] After performing a series of processes for all road links within an area, the display guide unit 21b calculates the driving coverage rate of the vehicle 100 within that area. That is, the display guide unit 21b calculates the driving coverage rate of the vehicle 100 within the area based on the calculated total length of roads within the area and the calculated sum of the lengths of roads traveled. That is, the driving coverage rate within the area is calculated by finding the ratio of the sum of the lengths of roads traveled to the total length of roads within the area.

[0026] Then, the display guide unit 21b performs the same process for all other sections in the target area. That is, for all other sections, the display guide unit 21b calculates the total length of roads in the section and the total length of roads traveled in the section, and calculates the travel coverage rate of the vehicle 100 in the section.

[0027] After calculating the travel coverage rate for all sections in the target area, the display guide unit 21b stores the calculated travel coverage rate results in the recording medium 30.

[0028] Furthermore, the display and guidance unit 21b displays the travel coverage rate calculated for each area on the display unit 240 of the user terminal 200 as comparison information for comparing all road links with traveled links. For example, the display and guidance unit 21b displays a map including the comparison information on the display unit 240 of the user terminal 200. In this embodiment, the display and guidance unit 21b transmits a map of the target area including the travel coverage rate as comparison information to the user terminal 200 via the communication unit 40.

[0029] FIG. 2 is a diagram showing an example of the display unit 240. In the example shown in FIG. 2, a driving coverage rate and a map including the driving coverage rate are displayed. The map shows a target area, which is divided into a plurality of rectangular zones (12 zones A1 to A12 in the example shown in FIG. 2). The driving coverage rate is then shown for each divided zone. For example, in zone A1, the driving coverage rate is "35%," which indicates that the driving coverage rate is relatively low compared to the other zones. In other words, it indicates that the untraveled rate in zone A1 is high. This allows, for example, a user who owns the user terminal 200 to know zones with a high percentage of untraveled rates and to understand that they should actively drive through zone A1 when investigating whether there are any abnormalities in the road surface in the target area.

[0030] Furthermore, the display guidance unit 21b displays the comparison information in a colored manner on the display unit 240 so that the owner of the user terminal 200 can visually grasp which areas have a high proportion of traveled sections when looking at the display unit 240. For example, the display guidance unit 21b may display the map by coloring each area in a color corresponding to the magnitude of the travel coverage rate (for example, red for the area with the highest travel coverage rate, yellow and blue depending on the travel coverage rate, etc.). Alternatively, the display guidance unit 21b may display the map by coloring each area in a color corresponding to the magnitude of the untraveled rate (for example, red for the area with the highest untraveled rate, yellow and blue depending on the travel coverage rate, etc.) so that the owner of the user terminal 200 can visually grasp which areas have a high proportion of untraveled sections when looking at the display unit 240.

[0031] (2) Flowchart: Next, the display guidance process executed by the control unit 20 will be described with reference to the flowchart in Fig. 3. This process is executed when, for example, an administrator (not shown) requests the display guidance system 10 to display comparison information on the display unit 240 of the user terminal 200. Specific processing contents will be described below.

[0032] When the display guidance process is started, the control unit 20 starts the following loop process (steps S1 to S4) for each of the multiple existing areas. That is, the control unit 20 extracts any one of the areas included in the target area and performs the loop process. The control unit 20 sequentially performs the loop process until the loop process is completed for all areas. Specifically, the control unit 20 calculates the total road length within the area using the function of the acquisition unit 21a (step S1). That is, the control unit 20, using the function of the acquisition unit 21a, refers to the map information 30a to acquire all road links within the area and calculates the lengths of all road links.

[0033] Next, the control unit 20 starts the following loop processing (steps S2 to S3) for each road link in the area. Specifically, the control unit 20 extracts one road link (e.g., road link L1) from the road links present in the area using the function of the display and guidance unit 21b, and determines whether the vehicle 100 has traveled on the target road (the extracted road link L1) within a predetermined period (e.g., within one month) (step S2). Specifically, the control unit 20 refers to the driving history 30b using the function of the acquisition unit 21a, and acquires traveled links of the vehicle 100 from the time-series position information of the vehicle 100 included in the driving history 30b. Then, the display and guidance unit 21b identifies the road link L1 from the traveled links of the vehicle 100 acquired by the acquisition unit 21a, and determines whether the vehicle 100 has traveled on the identified road link L1 within a predetermined period.

[0034] If the result of this step S2 is negative, i.e., if it is determined that the vehicle 100 has not traveled on the extracted road link L1 within a predetermined period of time, the control unit 20 ends the loop processing for the road link being processed and starts the loop processing for the next target road (e.g., road link L2).

[0035] On the other hand, if the answer to step S2 is affirmative, that is, if it is determined that the vehicle 100 has traveled the extracted road link L1 within the predetermined period, the control unit 20 adds the length of the target road (road link L1) to the length of the road that has been traveled to calculate the total length of the road that has been traveled (step S3). Note that the initial value of the "traveled road length" is "0", and it is a variable for calculating the total length of the road that has been traveled by adding the length of the target road, road link L1, to this initial value "0".

[0036] When the control unit 20 has completed the processing of steps S2 to S3 for all road links within the area, it ends the loop processing for each road link within the area. Then, the control unit 20 calculates the driving coverage rate within the area based on the processing of steps S1 and S3 using the function of the display guidance unit 21b (step S4). That is, the control unit 20 calculates the driving coverage rate within the area by using the function of the display guidance unit 21b to divide the total length of roads within the area by the sum of the lengths of roads traveled on all road links within the area. That is, the control unit 20 calculates the driving coverage rate within the area by using the display guidance unit 21b to find the ratio of the length of roads traveled to the total length of roads within the area.

[0037] When the control unit 20 has completed the processing of steps S1 to S4 for all sections of the target area, it ends the loop processing for each section. Then, the control unit 20 stores the calculated results in the recording medium 30 using the function of the display guide unit 21b (step S5). That is, the control unit 20 stores the calculated driving coverage rate for each section in the target area in the recording medium 30.

[0038] Then, the control unit 20 uses the function of the display guidance unit 21b to display the comparison information on the display unit 240 (step S6). That is, the control unit 20 uses the function of the display guidance unit 21b to display the travel coverage rate calculated for each area on the display unit 240 of the user terminal 200 as comparison information for comparing all road links with traveled links. The control unit 20 uses the function of the display guidance unit 21b to transmit a map of the target area including the comparison information to the user terminal 200 via the communication unit 40 in response to a request from the user terminal 200, for example.

[0039] Next, a description will be given of a driving coverage rate display process for displaying the driving coverage rate on the display unit 240 of the user terminal 200. Fig. 4 is a flowchart showing an example of the process in the user terminal 200. This process is performed, for example, when a user performs an operation on the user terminal 200 to display the driving coverage rate.

[0040] When the driving coverage rate display process is started, the control unit 220 in the user terminal 200 acquires the driving coverage rate for each area from the recording medium 30 of the display guidance system 10 (step S10). That is, the control unit 220 acquires information related to the driving coverage rate stored in the recording medium 30 from the display guidance system 10 via the communication unit 210.

[0041] Then, the control unit 220 displays the travel coverage rate for each area on the map (step S20). That is, the control unit 220 reflects the travel coverage rate acquired in step S10 on the map displayed on the display unit 240.

[0042] In this driving coverage rate display process, instead of the processes of steps S10 and S20, the control unit 220 may acquire a map including the driving coverage rate from the display guidance system 10 and display the map on the display unit 240. In other words, the control unit 220 may acquire a map reflecting the driving coverage rate from the display guidance system 10.

[0043] Next, the effects of this embodiment will be described. As described above, in this embodiment, the control unit 20 calculates a travel coverage rate, which is the ratio of road links that the vehicle 100 has traveled to the road links that are the subject of investigation in the target area, and causes the display unit 240 of the user terminal 200 to display the calculated travel coverage rate as comparison information. This allows the user to check the travel coverage rate displayed on the display unit 240, and as a result, the user can understand areas where a high percentage of roads have not been traveled. Furthermore, by being able to understand areas where a high percentage of roads have not been traveled in this way, the user can understand which areas they should actively travel through when investigating road abnormalities, for example, using cameras and various sensors mounted on the vehicle 100.

[0044] Furthermore, by being able to ascertain areas where the user has not traveled much, the user can prioritize travel in areas where the user has not traveled much, and therefore abnormal points on the road can be identified earlier than in a case where the user cannot ascertain areas where the user has not traveled much, and as a result, repairs and maintenance of abnormal points on the road can be carried out earlier. Furthermore, by being able to ascertain areas where the user has not traveled much, the user can be prevented from patrolling the same place multiple times, and the target area can be patrolled efficiently.

[0045] (3) Other embodiments: The above embodiment is an example for carrying out the present invention, and various other embodiments can be adopted. At least a part of the acquisition unit 21a and the display guide unit 21b constituting the display guide system may be separated into multiple devices. For example, some of the functions of the display guide unit 21b may be realized by the user terminal 200 or another server. Of course, some of the configurations of the above embodiment may be omitted, and the order of processing may be changed or omitted.

[0046] Furthermore, in the above-described embodiment, as an example of displaying comparison information on the display unit 240, a travel coverage rate indicating the ratio of traveled links to all road links is displayed. However, instead of displaying the travel coverage rate, an untraveled rate may be displayed. In other words, if the control unit 20 can calculate the travel coverage rate, it can also calculate the untraveled rate (for example, if the travel coverage rate is "35%", the untraveled rate is "65%). Therefore, the control unit 20 may display the untraveled rate as comparison information. In that case, in each of the processes in Figures 3 and 4, instead of the process of calculating the travel coverage rate and the process of displaying the travel coverage rate, a process of calculating the untraveled rate and a process of displaying the untraveled rate are executed.

[0047] In the above-described embodiment, as an example of displaying comparison information on the display unit 240, the control unit 20 displays the travel coverage rate corresponding to each area using the function of the display guide unit 21b, but it is sufficient that the display unit 240 displays comparison information that compares all road links with traveled links, and therefore the configuration of the comparison information displayed on the display unit 240 may be changed as appropriate. Figures 5 to 7 are diagrams showing modified examples, respectively.

[0048] FIG. 5 is a first modified example, showing only the comparison information and omitting the map display. In the example shown in FIG. 5, the comparison information includes the total distance of all road links and the traveled distance of traveled links. That is, the control unit 20 displays this information on the display unit 240 based on the total distance (total length) of all road links and the traveled distance of traveled links acquired by the function of the acquisition unit 21a. In the example shown in FIG. 5, in addition to the travel coverage rate, information on the total distance of all road links, the traveled distance of traveled links, and the untraveled distance of road links within the area is displayed. For example, in area A1, the travel coverage rate is displayed so that it can be visually ascertained that the total length (total distance) of all road links is displayed as "100 km," the traveled distance is displayed as "35 km," and the untraveled distance is displayed as "65 km." Note that the other areas display the same information as area A1, and therefore their description will be omitted.

[0049] The example in FIG. 5 allows for obtaining information that cannot be obtained from the display of the driving coverage rate. For example, when comparing area A1 and area A4, it can be seen that the driving coverage rate of area A4 is lower than that of area A1, but the untraveled distance of area A1 is greater (longer) than that of area A4. In other words, when comparing only the driving coverage rates, it can be determined that it is better to prioritize driving area A4, which has a higher untraveled ratio. However, when comparing the actual untraveled distances, it can be determined that area A1 has a larger untraveled distance, and therefore it is better to prioritize driving area A1 over area A4. Furthermore, although a map is omitted in FIG. 5, referring to the map in FIG. 2, it can be predicted that area A1 will have more roads than area A4, resulting in higher traffic volume and congestion. Therefore, even if the driving coverage rate of area A1 is higher than that of area A4, it can be determined that it is better to prioritize driving area A1.

[0050] In the example shown in Figure 5, the total distance of all road links, the traveled distance of traveled links, the untraveled distance, and the travel coverage rate are displayed, but it is sufficient if information regarding at least the total distance of all road links and the traveled distance of traveled links is displayed.

[0051] FIG. 6 shows a second modified example, showing only the comparison information and omitting the map. In the example shown in FIG. 6, the comparison information displays an evaluation value for traveled links determined based on the road types included in the area. Specifically, the control unit 20 weights expressways, national highways, prefectural roads, minor streets, and other road types, for example, by assigning a longer distance to expressways than to other roads (national highways, prefectural roads, minor streets, and the like). The road types to be weighted may be set in advance by an administrator or the like, and weighting is performed, for example, on road types with higher priority. In the example shown in FIG. 6, the travel coverage rate is displayed when weighting is performed by multiplying the total length and the distance of expressways included in the traveled distance by a coefficient (e.g., "5"). Specifically, in area A1, the total length is "100 km," the traveled distance is "35 km," and the untraveled distance is "65 km," of which "20 km" of expressways is included in the total length and "15 km" of expressways is included in the traveled distance. Under these conditions, when weighting is performed to calculate the driving coverage rate, the following formula is obtained. Driving coverage rate = (20 + 15 × 5) / (80 + 20 × 5) When this formula is solved, the driving coverage rate is approximately 53%. Note that the parentheses indicate the driving coverage rate before weighting. Also, evaluation values ​​for other areas are omitted. In this way, weighting can be performed based on road type, and the evaluation value of the traveled link can be changed. As a result, for example, the driving coverage rate for area A1 is "35%" before weighting, but after weighting it becomes "53%", and the user can understand that he or she has effectively traveled on high-priority roads in area A1 about half the time.

[0052] In the example shown in Fig. 6, in addition to the weighted driving coverage rate, the driving coverage rate before weighting and other distances such as the total length are displayed, but it is sufficient if at least the weighted driving coverage rate is displayed. Also, in the example shown in Fig. 6, the driving coverage rate is displayed after weighting, but the untraveled rate may also be displayed after weighting.

[0053] FIG. 7 shows a third modified example, showing only the comparison information and omitting the map display. In the example shown in FIG. 7, the comparison information displays an evaluation value for evaluating untraveled road links. In the above-described embodiment, the travel coverage rate is displayed for each section. However, even if the travel coverage rate is the same, for example, if the untraveled distance (i.e., 50 km) in a section with a total length of 100 km is the same as the untraveled distance (i.e., 25 km) in a section with a total length of 50 km, the user may not be able to determine at a glance which section to prioritize. Furthermore, as described in the example of FIG. 5, even if the total length and the traveled distance are displayed, it may be difficult to determine which sections are essentially untraveled. Therefore, in the example shown in FIG. 7, untraveled road links are evaluated based on the untraveled distance and the untraveled rate (in other words, based on parameters indicating untraveled sections) so that the user can immediately determine which sections are essentially untraveled. Specifically, an evaluation value (evaluation score) is calculated by multiplying the untraveled distance by the untraveled rate, and the higher the evaluation value, the more untraveled the area is compared to other areas. In other words, the lower the evaluation value, the more traveled the area is compared to other areas.

[0054] Taking the sections A1 and A4 in FIG. 7 as an example, if the total length of section A1 is 100 km and the distance traveled is 35 km, the untraveled distance is 65 km and the untraveled rate is 65%. The control unit 20 calculates the evaluation value by multiplying the untraveled distance of 65 km by the untraveled rate of 65% (65 × 0.65), resulting in a score of approximately 42 points. Note that in the example of FIG. 7, decimal points are rounded down. In contrast, if the total length of section A4 is 50 km and the distance traveled is 10 km, the untraveled distance is 40 km and the untraveled rate is 80%. The control unit 20 calculates the evaluation value by multiplying the untraveled distance of 40 km by the untraveled rate of 80% (40 × 0.8), resulting in a score of 32 points. In other words, the evaluation value of section A1 is higher than that of section A4, and therefore the user can see at a glance that section A1 is a section that has not been traveled substantially as much as section A4. Note that evaluation values ​​for other sections can also be calculated using similar processing. In the example shown in Figure 7, the total length and travel distance are displayed in addition to the evaluation value, but it is sufficient if at least the evaluation value is displayed.

[0055] Furthermore, the techniques of the present invention can also be applied as programs or methods. The above-described systems, programs, and methods may be realized as standalone devices or may be realized using components shared with various parts of a vehicle, and thus include various aspects. They can also be modified as appropriate, such as being partly software and partly hardware. Furthermore, the invention can also be realized as a recording medium for a program that controls the system. Of course, the recording medium for the program may be a magnetic recording medium or a semiconductor memory, and any recording medium developed in the future can be considered in the same way. [Explanation of symbols]

[0056] 10...display guidance system, 20...control unit, 21...display guidance program, 21a...acquisition unit, 21b...display guidance unit, 30...recording medium, 30a...map information, 30b...driving history, 40...communication unit, 100...vehicle, 110...communication unit, 120...positioning unit, 130...recording medium, 200...user terminal, 210...communication unit, 220...control unit, 230...user I / F unit, 240...display unit.

Claims

1. an acquisition unit that acquires all road links, which are all road links to be surveyed in each of a plurality of zones that are predetermined enclosed areas, and traveled links, which are road links that have been traveled by the road survey vehicle in each of the zones; a display guide unit that displays, on a display unit, comparison information for comparing all of the road links with the traveled links based on the acquired all of the road links and the acquired traveled links for each of the sections, Display and guidance system.

2. The comparison information is information indicating a travel coverage rate, which is a ratio of the traveled links to all the road links. The display guidance system according to claim 1 .

3. The comparison information is information for comparing the total distance of all the road links with the traveled distance of the traveled link.

3. The display guidance system according to claim 1 or 2.

4. The comparison information is information indicating the travel coverage rate weighted to increase the distance of a specific road type included in the area. The display guidance system according to claim 2 .

5. The display guide unit The contrast information is displayed in a color based on the contrast information. The display guidance system according to any one of claims 1 to 4.

Images