JP6464572B2 - Route information presentation system and route information presentation method - Google Patents

Description

  The present invention relates to a route information presentation system.

Conventionally, as a technique of a route information presentation system, for example, there is a technique described in Patent Document 1.
In the technique described in Patent Literature 1, a route search algorithm that matches the driver's preference is selected based on a travel route that has traveled in the past. Subsequently, a travel route from the current position to the destination is generated (searched) using the selected route search algorithm. Subsequently, the generated travel route is presented. As a result, a travel route that matches the driver's preference can be presented to the driver.

JP 2010-8284 A

However, in the technique described in Patent Document 1, for example, when the driver's preference for the driving route is different for each driving purpose such as commuting, work, daily life, leisure, etc., a route search algorithm that matches the driver's preference It was difficult to choose. Therefore, it may be difficult to present a travel route that matches the driver's preference.
This invention pays attention to the above points, and makes it a subject to provide the route information presentation system which can show a more suitable driving | running route to a driver | operator.

  In order to solve the above problem, according to one aspect of the present invention, the current driving purpose of the driver is estimated. Subsequently, the driver's preference associated with the estimated traveling purpose is extracted from the driver's preferences stored in the preference storage unit. Subsequently, the characteristics of a plurality of travel routes from the current location to the destination are detected. Subsequently, a travel route in which the detected feature matches the extracted driver's preference is selected from a plurality of travel routes. Subsequently, the selected travel route is presented to the driver.

  In one aspect of the present invention, for example, even when the driver's preference for the driving route differs for each driving purpose of the driver, a driving route having characteristics that match the driver's preference can be presented to the driver. As a result, a more appropriate travel route can be presented to the driver.

It is a conceptual diagram showing schematic structure of the route information presentation system which concerns on embodiment. It is a figure for demonstrating preference information. It is a figure for demonstrating the characteristic of a travel route. It is a flowchart showing route information presentation processing. It is a flowchart showing a driving | running | working purpose estimation process. It is a flowchart showing a travel route search process.

Next, embodiments of the present invention will be described with reference to the drawings.
In the present embodiment, the present invention is applied to a route information presentation system.
(Constitution)
As shown in FIG. 1, the route information presentation system includes a route guidance device 1 mounted on a vehicle C and a preference detection device 2 included in a data center D. The route guidance device 1 and the preference detection device 2 transmit and receive information via a communication path. In the present embodiment, for the sake of simplicity of explanation, the case where there is one vehicle C and one driver will be described.

(Configuration of the route guidance device 1)
The route guidance device 1 includes a vehicle information detection unit 3, a position detection unit 4, a travel state storage unit 5, a destination input unit 6, a communication unit 7, a route calculation unit 8, and a travel route presentation unit 9a. Is provided.
The vehicle information detection unit 3 acquires information related to the driving state and vehicle behavior of the vehicle C (hereinafter also referred to as “vehicle information”) detected by various sensors (not shown) included in the vehicle C. The vehicle information includes, for example, information indicating the steering angle of the steering wheel detected by the steering angle sensor, the stroke amount of the accelerator pedal detected by the accelerator pedal sensor, and the stroke amount of the brake pedal detected by the brake pedal sensor. In addition, the vehicle information includes, for example, information representing the acceleration of the center of gravity of the vehicle C detected by the acceleration sensor, the vehicle weight detected by the weight sensor, and an image around the vehicle C taken by the vehicle camera. Then, the vehicle information detection unit 3 outputs the acquired vehicle information to the traveling state storage unit 5.

  The position detection unit 4 acquires information (hereinafter also referred to as “current position calculation information”) that is detected by various sensors (not shown) included in the vehicle C and is used when calculating the current position of the vehicle C. The current position calculation information includes, for example, a GPS signal received by a GPS (Global Positioning System) receiver, an absolute direction detected by a geomagnetic sensor, a yaw rate of the vehicle C detected by a gyro sensor, and a vehicle C detected by a vehicle speed sensor. There is information that represents the travel distance. Subsequently, the position detection unit 4 detects the current position of the vehicle C based on the acquired current position calculation information. Then, the position detection unit 4 outputs information indicating the detected current position of the vehicle C (hereinafter also referred to as “current position information”) to the traveling state storage unit 5 and the route calculation unit 8.

The traveling state storage unit 5 acquires vehicle information from the vehicle information detection unit 3 and acquires current position information from the position detection unit 4. And the driving | running | working state memory | storage part 5 matches and memorize | stores the acquired vehicle information and present position information.
The destination input unit 6 receives an input of a destination from the driver of the vehicle C. When the destination input unit 6 receives the input of the destination, information indicating the destination (hereinafter also referred to as “destination information”. For example, latitude / longitude) is sent to the communication unit 7 and the route calculation unit 8. Output.

The communication unit 7 acquires vehicle information and current position information stored in the traveling state storage unit 5, and acquires destination information from the destination input unit 6. And the communication part 7 transmits the information (henceforth "vehicle side information") containing the acquired various information to the preference detection apparatus 2. FIG. The vehicle side information is transmitted every time a predetermined set time (for example, 1 second) elapses.
Further, the communication unit 7 obtains information indicating the driver's preference for the travel route (hereinafter also referred to as “preference information”), the current travel purpose of the driver of the vehicle C, and traffic congestion from the preference detection device 2. Information representing a detour to avoid (hereinafter also referred to as “detour information”) is received. For example, as shown in FIG. 2, the preference information is represented by the degree of consideration of each item related to the driver's preference for the travel route (hereinafter also referred to as “preference item”) for each travel purpose. The preference items include, for example, time (travel time, travel speed), fee, safety (dangerous place), driving load / ease of driving (number of turns), travel speed / smoothness (number of stops, stop time), There are easy to understand (roadside guidance), landscape (sightseeing information, SNS), facilities, and social contribution. Further, there are three levels of preference item considerations: ◎, ○, and Δ. Then, the communication unit 7 outputs the received preference information, the current traveling purpose of the driver of the vehicle C, and the detour information to the route calculation unit 8.

The route calculation unit 8 includes a travel route generation unit 8a, a travel route feature detection unit 8b, and a travel route selection unit 8c.
The travel route generation unit 8 a acquires current position information from the position detection unit 4 and acquires destination information from the destination input unit 6. Then, the travel route generation unit 8a generates a plurality of travel routes from the current position to the destination using the acquired current position information and destination information.

  The travel route feature detection unit 8b detects features of a plurality of travel routes generated by the travel route generation unit 8a. As the characteristics of the travel route, for example, as shown in FIG. 3, there are an advantageous feature and a disadvantageous feature that are taken into consideration when selecting the travel route. Advantageous features include, for example, fast (short travel time, short travel distance and high travel speed), cheap (low toll road fee), and easy to travel (low traffic lights, long blue hours, Wide roads, good road conditions, no obstacles, little traffic, little slope). In addition to this, as an advantageous feature, for example, easy to understand (many road guidance displays, few left / right turns, few branches, no regulation road), pleasant (good scenery, few stops), convenient Good (there are many facilities along the line and the radio environment of the mobile phone is good), and safety and security (the number of accidents and incidents is small, the number of enforcement is large, there is no school zone, the traffic is large, crime prevention There is a camera).

Disadvantages include, for example, narrow (difficult to pass each other), weather (fog / rain, wind), traffic environment (many right turns, many curves, many slopes, many pedestrians, rough roads) , High (total cost is high), time consuming (congested, time required is unstable, route cannot be changed halfway), difficult to understand (easy to make mistakes).
Thus, in this embodiment, the travel time is short, the travel distance is short, the travel speed is high, the toll road fee is low, the traffic light is low, the traffic light is long, the road is wide, the road condition is good, the obstacle Nothing, little traffic, little slope, many road guidance displays, few left and right turns, few branches, no regulation roads, good scenery, few stops, many facilities along the line, Detecting a plurality of characteristics of the travel route from a good mobile radio environment, a small number of accidents / incidents, a small number of enforcement cases, no school zone, a large traffic volume, and a security camera. Therefore, the characteristics of the travel route can be subdivided. As a result, it is possible to present to the driver a travel route having characteristics that are more consistent with the driver's preference.

  The travel route selection unit 8 c acquires the preference information and the current travel purpose of the driver of the vehicle C from the communication unit 7. Then, the travel route selection unit 8c is associated with the driver's preference (the current travel purpose of the driver of the vehicle C) indicated by the acquired preference information among the plurality of travel routes generated by the travel route generation unit 8a. A travel route that matches the feature detected by the travel route feature detection unit 8b is selected. Specifically, the travel route selection unit 8c selects a travel route whose degree of coincidence with the driver's preference is equal to or higher than a predetermined ratio (for example, 50%). Alternatively, the travel route selection unit 8c selects a travel route having the highest degree of coincidence with the driver's preference as compared with other travel routes. Then, the travel route selection unit 8 c outputs the selection result to the route guidance unit 9.

Further, the travel route selection unit 8 c acquires detour information from the communication unit 7. Then, the travel route selection unit 8 c outputs the acquired detour information to the route guidance unit 9.
The route guidance unit 9 includes a travel route presentation unit 9a and a detour presentation unit 9b.
The travel route presentation unit 9a generates an image in which the travel route selected by the travel route selection unit 8c is superimposed on the map. Then, the travel route presentation unit 9a presents the generated image to the driver.
Further, the detour presentation unit 9b acquires detour information from the travel route selection unit 8c. Subsequently, the alternative route presentation unit 9b generates an image in which the alternative route represented by the acquired alternative route information is superimposed on the map. Then, the detour presentation unit 9b presents the generated image to the driver.
The preference detection device 2 includes a travel purpose-specific preference extraction unit 10, a preference extraction unit 11, and a detour calculation unit 12.

The travel purpose-specific preference extraction unit 10 includes a point DB (Data Base) 10a, a travel history DB 10b, a travel purpose estimation unit 10c, a road DB 10d, a risk location DB 10e, a purpose-specific preference determination unit 10f, and a purpose-specific preference. DB10g.
The point DB 10a stores the location (latitude / longitude) of a destination candidate point (hereinafter also referred to as “destination candidate point”) and a travel purpose in association with each other. Examples of the destination candidate point include an office, a store, a hospital, a station, a hotel, and a resort. Examples of traveling purposes include commuting, work, daily life, and leisure. Specifically, the point DB 10a stores the destination candidate point “office” and the travel purpose “commuting traffic” in association with each other, and stores the destination candidate points “shop”, “hospital”, “station”, and the travel purpose “daily life”. “Living transportation” is stored in association with each other, and the destination candidate point “excursion place” and the traveling purpose “leisure transportation” are stored in association with each other.

  The travel history DB 10 b stores information on past travel history of the vehicle C (hereinafter also referred to as “travel history information”) using the vehicle-side information received from the communication unit 7. The travel history information includes, for example, history information that associates a point where the vehicle C has traveled in the past with past vehicle information and destination information at this point. An argument is assigned to the travel history information for each travel date of the vehicle C. The arguments are allocated in order from the latest travel history information. For example, when the vehicle C travels one day ago, the argument “1” is assigned to the travel history information one day ago. Further, for example, when the vehicle C travels three days ago and does not travel one day ago and two days ago, the argument “1” is assigned to the travel history information three days ago.

The travel purpose estimation unit 10c includes a current travel purpose estimation unit 10ca, a travel history acquisition unit 10cb, and a past travel purpose estimation unit 10cc.
The current travel purpose estimation unit 10ca estimates the current travel purpose of the driver of the vehicle C (the current travel purpose of the driver of the vehicle C) using the vehicle-side information received from the vehicle C. Specifically, the current traveling purpose estimation unit 10ca determines a destination candidate point at the same position (latitude / longitude) as the destination position (latitude / longitude) represented by the vehicle-side information received from the vehicle C from the point DB 10a. Extract. Subsequently, the current traveling purpose estimation unit 10ca sets the traveling purpose associated with the extracted destination candidate point as the current traveling purpose of the driver of the vehicle C. Then, the current traveling purpose estimation unit 10ca outputs the estimation result to the purpose-specific preference determination unit 10f and the preference extraction unit 11.

The travel history acquisition unit 10cb acquires travel history information from the travel history DB 10b.
The past travel purpose estimation unit 10cc acquires travel history information stored in the travel history DB 10b. Subsequently, the travel purpose estimation unit 10c estimates the past travel purpose of the driver of the vehicle C using the acquired travel history information. Specifically, the past travel purpose estimation unit 10cc determines the destination candidate point at the same position (latitude / longitude) as the position (latitude / longitude) of the end point represented by the travel history information acquired from the travel history DB 10b from the point DB 10a. To extract. Subsequently, the past traveling purpose estimation unit 10cc sets the traveling purpose associated with the extracted destination candidate point as the past traveling purpose of the driver of the vehicle C. Then, the past traveling purpose estimation unit 10cc outputs the estimation result to the purpose-specific preference determination unit 10f and the preference extraction unit 11.

The road DB 10d stores information on roads on which the vehicle C may travel (hereinafter also referred to as “road information”). The road information includes, for example, road shape information such as a lane width of a road (for example, a link), the number of intersections, the presence / absence of a curve, and undulations.
The dangerous part DB 10e stores information on points that are dangerous when the vehicle C travels (hereinafter also referred to as “dangerous point information”). As dangerous point information, for example, there is information on a point where an accident has occurred in the past and a point where the road width is narrow during construction.

The purpose-specific preference determination unit 10f includes a feature counting unit 10fa and a preference determination unit 10fb.
The feature counting unit 10fa includes the travel history information acquired by the travel history acquisition unit 10cb, the past travel purpose of the driver of the vehicle C estimated by the past travel purpose estimation unit 10cc, and the road information stored in the road DB 10d. The dangerous point information stored in the dangerous part DB 10e is acquired. Then, the feature counting unit 10fa counts the characteristics of the travel route on which the vehicle C has traveled in the past for each travel purpose estimated by the past travel purpose estimation unit 10cc using the acquired various information.

  The preference determination unit 10fb determines the driver's preference (preference information) for the travel route for each travel purpose, using the characteristics of the travel route counted by the feature counting unit 10fa. Specifically, the preference determination unit 10fb increases the feature value of the tabulation result (a variable for feature tabulation, which will be described later) as the driver's preference item (for example, time, fee, safety, driving load) related to the feature. It is determined that the degree of preference of the driver with respect to (ease of driving, etc.) is high (for example, ◎, ○) Then, the purpose-specific preference determination unit 10f outputs the extracted preference (preference information) to the purpose-specific preference DB 10g.

  The purpose-specific preference DB 10g stores the driver's preference (preference information) with respect to the travel route for each travel purpose, as shown in FIG. 2, using the preference information acquired from the purpose-specific preference determination unit 10f. Thus, the purpose-specific preference DB 10g stores the driver's preference (preference information) for the travel route in association with the travel purpose. In FIG. 2, when the driving purpose is “commuting”, the driver of the vehicle C has a high degree of consideration of the characteristics “time” and “traveling speed”, and the characteristics “time” and “traveling speed” It can be seen that there is a tendency (preference) to prefer a travel route that prioritizes.

The preference extracting unit 11 selects the driver's preference (preference information) associated with the current driving purpose estimated in step S100 from the driver's preferences (preference information) stored in the purpose-specific preference DB 10g. To extract. Then, the preference extraction unit 11 transmits the extracted preference information and the current travel purpose to the detour calculation unit 12 and the route guidance device 1.
The detour calculation unit 12 includes a traffic congestion determination unit 12a, a detour target area specifying unit 12b, a detour generation unit 12c, a detour feature detection unit 12d, and a detour selection unit 12e.

  The traffic jam judgment unit 12a receives traffic information (hereinafter also referred to as “traffic information”) from a vehicle detector (not shown), and receives a VICS (registered trademark) (Vehicle Information and Communication System) station or FM station. Traffic information is received from (not shown). Subsequently, the traffic jam determination unit 12a uses the traffic information and the traffic information to determine whether a current or future traffic jam occurs on the travel route of the vehicle C (on the travel route selected by the travel route selection unit 8c). Determine whether or not. Subsequently, when the traffic jam determination unit 12a determines that a current or future traffic jam occurs on the travel route of the vehicle C, it predicts a point at which the traffic jam occurs (hereinafter also referred to as a “traffic jam occurrence point”). To do. Then, the traffic jam determining unit 12a outputs the determination result to the detour target area specifying unit 12b.

The detour target area specifying unit 12b uses the congestion occurrence point acquired from the traffic congestion determination unit 12a to perform detours to avoid currently occurring traffic jams or future traffic jams on the travel route of the vehicle C. An area to be performed (hereinafter also referred to as “a detour target area”) is specified. Then, the detour target area identification unit 12b outputs the identification result to the detour generation unit 12c.
The detour generation unit 12c uses the detour target area acquired from the detour target area specifying unit 12b to generate traffic jams currently occurring on the travel route of the vehicle C (on the travel route selected by the travel route selection unit 8c). Alternatively, a plurality of detours for avoiding future traffic congestion are generated. Then, the detour generation unit 12c outputs the generation result to the detour feature detection unit 12d.

The detour feature detection unit 12d detects features of a plurality of detours generated by the detour generation unit 12c using the detour acquired from the detour generation unit 12c and the road information stored in the road DB. To do. As a detour feature, the same feature as that of the travel route is used. Then, the detour feature detection unit 12d outputs the detection result to the detour selection unit 12e.
The detour selection unit 12e uses the detour feature acquired from the detour feature detection unit 12d, and the feature detected by the detour feature detection unit 12d from among a plurality of detours generated by the detour generation unit 12c. Selects a detour that matches the driver's preference acquired from the preference extraction unit 11. Specifically, the detour selection unit 12e selects a detour whose degree of coincidence with the driver's preference is equal to or higher than a predetermined ratio (for example, 50%), similarly to the travel route selection unit 8c. Alternatively, the detour selection unit 12e selects a detour having the highest degree of coincidence with the driver's preference as compared with other detours. Then, the detour selection unit 12e transmits the selection result to the vehicle C.

(Calculation processing)
Next, calculation processing (hereinafter also referred to as “route information presentation processing”) executed by the route information presentation system (preference extraction unit 11 and preference detection device 2) of the present embodiment will be described. The route information presentation process is repeatedly executed every predetermined time (for example, 10 [ms]).
As shown in FIG. 4, in step S100, the preference detection device 2 (current travel purpose estimation unit 10ca) executes a travel purpose estimation process for estimating the current travel purpose of the driver of the vehicle C. Details of the travel purpose estimation process will be described later.

  Subsequently, the process proceeds to step S200, where the route guidance device 1 (travel route generation unit 8a, travel route feature detection unit 8b, travel route selection unit 8c) and preference detection device 2 (preference extraction unit 11) perform a travel route search. Execute the process. In the travel route search process, the preference detection device 2 (preference extraction unit 11) corresponds to the current travel purpose estimated in step S100 from the driver's preferences (preference information) stored in the purpose-specific preference DB 10g. The driver's preference (preference information) attached is extracted. Subsequently, the route guidance device 1 (travel route generation unit 8a) generates a plurality of travel routes from the current location to the destination. Subsequently, the route guidance device 1 (travel route feature detection unit 8b) detects the features of the generated travel routes. Subsequently, the preference detection device 2 (travel route selection unit 8c) selects a travel route in which the detected feature matches the extracted driver's preference (preference information) from among the plurality of generated travel routes. Details of the travel route search process will be described later.

  Subsequently, the process proceeds to step S300, and the preference detection device 2 (traffic congestion determination unit 12a) determines whether current or future traffic congestion occurs on the travel route selected in step S200. If the preference detection device 2 (traffic jam determination unit 12a) determines that a traffic jam occurs on the travel route (Yes), the process proceeds to step S500. On the other hand, when the preference detection device 2 (traffic jam determination unit 12a) determines that no traffic jam occurs on the travel route (No), the process proceeds to step S400.

  Subsequently, in step S400, the route guidance device 1 (travel route presentation unit 9a) generates an image in which the travel route selected in step S200 is superimposed on the map. Subsequently, the route guidance device 1 (travel route presentation unit 9a) presents the generated image to the driver, and then proceeds to step S800. Note that when the route guidance flag described later is in a reset state of “0”, the route guidance device 1 (the travel route presentation unit 9a) does not present the travel route, and the detour route when a traffic jam occurs. In preparation for presentation, the generated travel route is stored as an assumed travel route.

On the other hand, in step S500, the preference detection device 2 (the detour generation unit 12c) detects a traffic jam that is currently occurring on the corresponding route of the vehicle C (on the travel route selected in step S200) or a traffic jam that will occur in the future. Generate multiple detours to avoid. Subsequently, the preference detection device 2 (the detour feature detection unit 12d) detects the features of the plurality of generated detours.
Subsequently, the process proceeds to step S600, and the preference detection device 2 (the detour selection unit 12e) detects the driver's feature extracted in step S200 from the plurality of detours generated in step S500. Select a detour with features that match your preferences.

  Subsequently, the process proceeds to step S700, and the route guidance device 1 (the detour presentation unit 9b) presents the detour selected in step S600 to the driver, and then proceeds to step S800. If the route guidance flag is in the reset state of “0”, the route guidance flag is set to “1” and the detour route selected in step S600 is presented. Thus, even if the driver does not input the destination from the destination input unit 6 and the travel route is not presented, if a traffic jam occurs on the assumed travel route, the detour is bypassed. Can be presented to the driver.

  In step S800, the route guidance device 1 (route calculation unit 8) uses the current position of the vehicle C acquired from the position detection unit 4 and the destination acquired from the destination input unit 6 to determine whether the vehicle C is a destination. It is determined whether or not it has arrived. And when the route guidance apparatus 1 (route calculating part 8) determines with the vehicle C having arrived at the destination (Yes), this calculating process is complete | finished. On the other hand, when it is determined that the vehicle C has not arrived at the destination (No), the route guidance device 1 (route calculation unit 8) returns to step S300.

Next, the travel purpose estimation process executed by the preference detection device 2 will be described.
As shown in FIG. 5, in step S <b> 101, the preference detection device 2 (current travel destination estimation unit 10 ca) determines whether or not a destination is input from the destination input unit 6. Specifically, the preference detection device 2 (current travel purpose estimation unit 10ca) determines whether destination information has been received from the vehicle C. If the preference detection device 2 (current travel purpose estimation unit 10ca) determines that the destination information has been received from the vehicle C (Yes), it determines that the destination has been input, and proceeds to step S102. On the other hand, when it is determined that the destination information is not received from the vehicle C (No), the preference detection device 2 (current travel purpose estimation unit 10ca) determines that the destination is not input, and step S104. Migrate to

In step S102, the preference detection device 2 (current travel purpose estimation unit 10ca) sets the route guidance flag to a set state of “1”.
In step S103, the preference detection device 2 (current traveling purpose estimation unit 10ca) receives the position (latitude / longitude) of the destination received by the destination input unit 6 from the point DB 10a, that is, the vehicle C. A destination candidate point at the same position (latitude / longitude) as the destination position (latitude / longitude) represented by the vehicle-side information is extracted. Subsequently, the preference detection device 2 (current travel purpose estimation unit 10ca) sets the travel purpose associated with the extracted destination candidate point as the current travel purpose of the driver of the vehicle C, and then performs this calculation process. finish. The preference detection device 2 (current travel purpose estimation unit 10ca) uses the destination (latitude / longitude) of the destination (latitude / longitude) of the destination candidate points stored in the point DB 10a. If there is no place candidate point, the destination candidate point closest to the destination position is extracted.

On the other hand, it transfers to step S104 and the preference detection apparatus 2 (current driving | running purpose estimation part 10ca) sets a route guidance flag to the reset state of "0".
Subsequently, the process goes to step S105, and the preference detection device 2 (current travel purpose estimation unit 10ca) determines whether or not the vehicle C has traveled in the past on the road (link) that is currently traveling. Specifically, the preference detection device 2 (current travel purpose estimation unit 10ca) includes travel history information of a road (link) on which the vehicle C is currently traveling among travel history information stored in the travel history DB 10b. It is determined whether or not there is. If the preference detection device 2 (current travel purpose estimation unit 10ca) determines that there is travel history information of the road (link) on which the vehicle C is currently traveling (Yes), the vehicle C is currently traveling. It is determined that the vehicle has traveled on the road (link) in the past, and the process proceeds to step S106. On the other hand, when the preference detection device 2 (current travel purpose estimation unit 10ca) determines that there is no travel history information of the road (link) on which the vehicle C is currently traveling (No), the vehicle C is currently traveling. It determines with having not drive | worked the road (link) which has been carried out in the past, and transfers to step S107.

  In step S106, the preference detection device 2 (current travel purpose estimation unit 10ca) determines from the travel history DB 10b the travel history information determined to exist in step S105, that is, the road (link) on which the vehicle C is currently traveling. Travel history information is extracted. Subsequently, the preference detection device 2 (current traveling purpose estimation unit 10ca) sets the traveling purpose represented by the extracted traveling history information as the current traveling purpose of the driver of the vehicle C, and then ends this calculation process.

  On the other hand, in step S107, the preference detection device 2 (current travel purpose estimation unit 10ca) extracts a driver's schedule and calendar from the cloud server (not shown) on the Internet via the Internet. It is assumed that the driver's schedule and calendar are stored in the cloud server. Subsequently, the preference detection device 2 (current travel purpose estimation unit 10ca) estimates the current travel purpose of the driver of the vehicle C using the extracted driver's schedule and calendar, and then ends this calculation process. .

  Specifically, the preference detection device 2 (current travel purpose estimation unit 10ca) estimates the destination from the contents of the driver's schedule. For example, when a facility name is described in the contents of the schedule, the facility is estimated as a destination. Moreover, the preference detection apparatus 2 (current driving | running | working purpose estimation part 10ca) estimates the destination from the day of the calendar. For example, when the day of the week is a weekday, the driver's work place inputted in advance is estimated as the destination. Subsequently, the preference detection device 2 (current travel purpose estimation unit 10ca) extracts from the point DB 10a a destination candidate point having the same position (latitude / longitude) as the estimated destination position (latitude / longitude). Subsequently, the preference detection device 2 (current travel purpose estimation unit 10ca) sets the travel purpose associated with the extracted destination candidate point as the current travel purpose of the driver of the vehicle C.

In the present embodiment, the current traveling purpose of the driver of the vehicle C is estimated using at least one of the destination, the driver's schedule, the calendar, and the traveling history of the vehicle C. Therefore, in the present embodiment, the estimation accuracy of the current traveling purpose of the driver of the vehicle C can be improved. As a result, it is possible to present to the driver a travel route having characteristics that are more consistent with the driver's preference.
In estimating the current driving purpose of the driver, the number of occupants estimated from the vehicle weight detected by the vehicle information detection unit 3 or the loaded cargo weight may be used in order to improve the estimation accuracy.

  Moreover, it is good also as a structure which shows the driving | running purpose estimated by step S103, S106 to the driver | operator of the vehicle C with an image or a sound, and makes a driver | operator confirm the estimated driving | running purpose. In this case, if the presented traveling purpose is wrong, the estimation result (traveling purpose) can be corrected according to the operation of the driver. Further, the correction content is fed back to the point DB 10a and the travel history DB 10b so that the travel purpose of the point DB 10a and the travel history DB 10b can be corrected. Thereby, the estimation accuracy of the current traveling purpose of the driver of the vehicle C from the next time can be improved.

Next, a travel route search process executed by the preference detection device 2 will be described.
As shown in FIG. 6, in step S201, the preference detection device 2 (running history acquisition unit 10cb) initializes an argument N to “1”.
Subsequently, the process proceeds to step S202, and the preference detection device 2 (travel history acquisition unit 10cb) determines from the travel history DB 10b that the Nth travel history information set in step S201 (the argument N is updated in step S207). Obtains the updated argument N-th travel history information).

  Subsequently, the process proceeds to step S203, and the preference detection device 2 (past travel purpose estimation unit 10cc) determines whether or not the argument Nth travel history information exists in the travel history DB 10b. Specifically, the preference detection device 2 (past travel purpose estimation unit 10cc) determines whether or not the argument Nth travel information has been acquired in step S202 (travel history acquisition unit 10cb). When the preference detection device 2 (past travel purpose estimation unit 10cc) determines that the argument N-th travel information has been acquired in step S202 (Yes), the travel history DB 10b includes the argument N-th travel history information. Then, it determines and it transfers to step S204.

On the other hand, when the preference detection device 2 (past travel purpose estimation unit 10 cc) determines that the argument Nth travel history information could not be acquired in step S202 (No), the preference Nth travel history is stored in the travel history DB 10b. It is determined that there is no information, and the process proceeds to step S208.
In step S204, the preference detection apparatus 2 (past travel purpose estimation unit 10cc) estimates the past travel purpose of the driver of the vehicle C using the termination point represented by the travel history extracted in step S202. Specifically, the preference detection device 2 (past travel purpose estimation unit 10cc) obtains a destination candidate point at the same position (latitude / longitude) as the position (latitude / longitude) of the end point represented by the travel history from the point DB 10a. Extract. Subsequently, the preference detection device 2 (past travel purpose estimation unit 10cc) sets the travel purpose associated with the extracted destination candidate point as the past travel purpose of the driver of the vehicle C (the driver of the vehicle C). Estimate past driving objectives).

  Subsequently, the process proceeds to step S205, where the preference detection device 2 (feature totaling unit 10fa) uses the travel history acquired in step S202, the past travel purpose of the driver of the vehicle C estimated in step S204, and the road DB 13. Using the stored road information and the dangerous point information stored in the dangerous part DB 14, for each traveling purpose estimated in step S204, characteristics of the traveling route on which the vehicle C has traveled in the past (advantageous characteristics) To extract. In the feature extraction of the travel route, for example, as shown in FIG. 3, in addition to the feature (advantageous feature) of the travel route on which the vehicle C has traveled, the feature of the travel route on which the vehicle C has not traveled (disadvantageous) Feature) is also extracted.

  Subsequently, the process proceeds to step S206, and the preference detection device 2 (feature totaling unit 10fa, preference determination unit 10fb, purpose-specific preference DB 10g) extracts the characteristics of the travel route extracted in step S205 for each travel purpose estimated in step S204. Are counted. Specifically, the preference detection device 2 (feature totaling unit 10fa) associates a variable (hereinafter referred to as “feature totalization”) with a combination of the travel purpose estimated in step S204 and the characteristics of the travel route extracted in step S205. “1” is added to “variable”. For example, when traveling on a road with a small amount of traffic due to commuting, a variable for feature aggregation (for example, A-a) associated with the traveling purpose “commuting” and the feature “low traffic signal” and the traveling purpose “ “1” is added to each of the variable for feature aggregation (for example, Ab) associated with the feature “commuting” and the feature “low traffic”. Note that the feature counting variables (Aa, Ab,...) Are initialized to “0” at the start of the travel route search process.

  Subsequently, the preference detection device 2 (preference determination unit 10fb) uses the characteristics totaling variables (Aa, Ab,...), That is, the characteristics of the totaled travel routes, for each travel purpose. The driver's preference for is determined. Specifically, the preference detection device 2 (preference determination unit 10fb) increases the characteristic aggregation variables (Aa, Ab,...) As the numerical value of the characteristic aggregation variables (Aa, Ab,...) Increases. b), etc. (more specifically, the driver's degree of consideration for the driver's preference items related to the feature (for example, time, fee, safety, driving load / ease of driving, etc.)) Is high (for example, ◎, ○). Subsequently, the preference detection device 2 (purpose-specific preference DB 10g) stores the determined driver's preference (preference information) for each traveling purpose.

  As described above, in the present embodiment, the past travel history (travel history information) of the vehicle C is acquired. Subsequently, the past travel purpose of the driver is estimated using the acquired travel history (travel history information). Subsequently, using the acquired travel history (travel history information), the characteristics of travel routes on which the vehicle C traveled in the past are aggregated for each estimated travel purpose. Subsequently, the driver's preference for the travel route is determined for each travel purpose using the characteristics of the travel routes collected. Subsequently, the preference detection device 2 stores the determined driver's preference (preference information) in association with the travel purpose. Therefore, in the present embodiment, it is possible to more appropriately determine the driver's preference (preference information).

In step S207, the preference detection apparatus 2 (purpose-specific preference determination unit 10f) sets “1” to the argument N set in step S201 (or the updated argument N when the argument N is updated in step S207). ”And the argument N is updated, and the process returns to step S202.
On the other hand, in step S208, the preference detection device 2 (the purpose-specific preference determination unit 10f) acquires the current traveling purpose of the driver of the vehicle C estimated in step S100.
Then, it transfers to step S209 and the preference detection apparatus 2 (travel route selection part 8c) respond | corresponds to the present driving | running | working objective acquired by step S208 out of the driver | operator's preference memorize | stored in purpose-specific preference DB10g. The driver's preference (preference information) attached is extracted.

  Then, it transfers to step S210 and the preference detection apparatus 2 (travel route production | generation part 8a) produces | generates the several travel route from a present location to the destination. Subsequently, the route guidance device 1 (travel route feature detection unit 8b) detects the features of the generated travel routes. Subsequently, the preference detection device 2 (travel route selection unit 8c) selects a travel route in which the detected feature matches the driver's preference (preference information) extracted in step S209 from among the plurality of generated travel routes. select. Note that the preference detection device 2 (the travel route selection unit 8c) extracts, in addition to the features (advantageous features) of the travel route on which the vehicle C has traveled, the disadvantageous features of the travel route on which the vehicle C has not traveled. May select a travel route having an advantageous characteristic without selecting a travel route having an unfavorable characteristic.

(Operation)
Next, the operation of the route information presentation system of this embodiment will be described.
It is assumed that the route information presentation system (the route guidance device 1 and the preference detection device 2) executes the route information presentation process while the vehicle C is traveling. Then, the preference detection device 2 (current travel purpose estimation unit 10ca) estimates the current travel purpose of the driver of the vehicle C (step S100 in FIG. 4). Subsequently, the driver associated with the current driving purpose estimated by the preference detection device 2 (preference extraction unit 11) from the driver's preference (preference information) stored in the preference DB 10g by purpose. Is extracted (preference information) (step S200 in FIG. 4). Subsequently, the route guidance device 1 (travel route generation unit 8a) generates a plurality of travel routes from the current location to the destination (step S200 in FIG. 4). Subsequently, the route guidance device 1 (travel route feature detection unit 8b) detects the features of the plurality of travel routes generated (step S200 in FIG. 4). Subsequently, the preference detection device 2 (travel route selection unit 8c) selects a travel route in which the detected feature matches the extracted driver's preference (preference information) from among the generated travel routes ( Step S200 in FIG. 4).

Here, it is assumed that the preference detection device 2 (traffic jam determination unit 12a) determines that no current or future traffic jam occurs on the selected travel route ("No" in step S300 in FIG. 4). Then, the route guidance device 1 (travel route presentation unit 9a) generates an image in which the selected travel route is superimposed on the map, and presents the generated image to the driver (step S400 in FIG. 4).
Thus, in the present embodiment, the current driving purpose of the driver is estimated. Subsequently, the driver's preference associated with the estimated traveling purpose is extracted from the driver's preferences stored in the purpose-specific preference DB 10g. Subsequently, the characteristics of a plurality of travel routes from the current location to the destination are detected. Subsequently, a travel route that matches the extracted driver's preference with the detected feature is selected from a plurality of travel routes. Subsequently, the selected travel route is presented to the driver. Therefore, in the present embodiment, for example, even when the driver's preference for the driving route differs for each driving purpose of the driver, a driving route having characteristics that match the driver's preference can be presented to the driver. As a result, a more appropriate travel route can be presented to the driver.

On the other hand, it is assumed that the preference detection device 2 (traffic jam determination unit 12a) determines that a current or future traffic jam occurs on the selected travel route (step S300 “Yes” in FIG. 4). Then, the preference detection device 2 (the detour generation unit 12c) generates a plurality of detours for avoiding a traffic jam that is currently occurring or a traffic jam that will occur in the future (step S500 in FIG. 4).
Subsequently, the preference detection device 2 (the detour feature detection unit 12d) extracts the generated detour feature (step S500 in FIG. 4). Subsequently, the preference detection device 2 (the detour selection unit 12e) selects a detour in which the detected feature (detour feature) matches the extracted driver's preference from among the generated detours. (Step S600 in FIG. 4). Subsequently, the route guidance device 1 (the detour presentation unit 9b) generates an image in which the selected detour is superimposed on the map (step S700 in FIG. 4), and presents the generated image to the driver (FIG. 4). Step S700).

Thus, in this embodiment, a detour in which the detected feature matches the extracted driver's preference is selected from a plurality of detours. Subsequently, the selected detour is presented to the driver. Therefore, according to the present embodiment, for example, when a traffic jam occurs, it is possible to present a detour having characteristics that match the driver's preference. Thereby, the utilization factor of the driver's detour can be improved.
In this embodiment, the purpose-specific preference DB 10g in FIG. 1 constitutes a preference storage unit. Similarly, the current traveling purpose estimation unit 10ca of FIG. 1 constitutes a traveling purpose estimation unit. Moreover, the preference extraction part 11 of FIG. 1 comprises a preference extraction part. Further, the travel route feature detection unit 8b in FIG. 1 constitutes a travel route feature detection unit. Further, the travel route selection unit 8c in FIG. 1 constitutes a travel route selection unit. Furthermore, the travel route presentation unit 9a in FIG. 1 constitutes a travel route presentation unit. Further, the travel history acquisition unit 10cb of FIG. 1 constitutes a travel history acquisition unit. Further, the past traveling purpose estimation unit 10cc of FIG. 1 constitutes a past traveling purpose estimation unit. Further, the feature counting unit 10fa of FIG. 1 constitutes a feature counting unit. Furthermore, the preference determination part 10fb of FIG. 1 comprises a preference determination part. Further, the detour generation unit 12c of FIG. 1 constitutes a detour generation unit. Further, the detour selection unit 12e in FIG. 1 constitutes a detour selection unit. Further, the detour presentation unit 9b in FIG. 1 constitutes a detour presentation unit.

(Effect of this embodiment)
The route information presentation system according to the present embodiment has the following effects.
(1) According to the route information presentation system (preference extraction unit 11, preference detection device 2) according to the present embodiment, the preference detection device 2 estimates the current driving purpose of the driver. Subsequently, the preference detection device 2 extracts the driver's preference associated with the estimated travel purpose from the driver's preference stored in the purpose-specific preference DB 10g. Subsequently, the route guidance device 1 detects characteristics of a plurality of travel routes from the current location to the destination. Subsequently, a travel route in which the detected feature matches the extracted driver's preference is selected from a plurality of travel routes. Subsequently, the route guidance device 1 presents the selected travel route to the driver.
According to such a configuration, for example, even when the driver's preference for the travel route is different for each driving purpose of the driver, a travel route having characteristics that match the driver's preference can be presented to the driver. As a result, a more appropriate travel route can be presented to the driver.

(2) According to the route information presentation system according to the present embodiment, the preference detection device 2 acquires the past travel history (travel history information) of the vehicle C. Subsequently, the preference detection device 2 estimates the driver's past travel purpose using the acquired travel history (travel history information). Subsequently, the preference detection device 2 uses the acquired travel history (travel history information) to aggregate the characteristics of the travel route on which the vehicle C traveled in the past for each estimated travel purpose. Subsequently, the preference detection device 2 determines the driver's preference for the travel route for each travel purpose using the tabulated travel route characteristics. Subsequently, the preference detection device 2 stores the determined driver's preference in association with the travel purpose.
According to such a configuration, the driver's preference for the travel route is determined based on the characteristics of the travel route on which the vehicle C has traveled in the past. Therefore, the preference of the driver can be determined more appropriately.

(3) According to the route information presentation system according to the present embodiment, the route guidance device 1 selects a detour whose detected feature matches the extracted driver's preference from among a plurality of detours. Subsequently, the route guidance device 1 presents the selected detour to the driver.
According to such a configuration, for example, when a traffic jam occurs, it is possible to present a detour having characteristics that match the driver's preference. Thereby, the utilization factor of the driver's detour can be improved.

(4) According to the route information presentation system according to the present embodiment, the preference detection device 2 uses at least one of the destination, the driver's schedule, the calendar, and the travel history (travel history information) of the vehicle C. The current driving purpose of the driver of the vehicle C is estimated.
According to such a configuration, it is possible to improve the estimation accuracy of the travel purpose. As a result, it is possible to present to the driver a travel route having characteristics that are more consistent with the driver's preference.

(5) According to the route information presentation system according to the present embodiment, the preference detection device 2 is configured such that the travel time is short, the travel distance is short, the travel speed is high, the toll road fee is low, the number of traffic lights is small, and the green time Long, wide road, good road surface condition, no obstacles, little traffic, little slope, many road guidance displays, few left and right turns, few branches, few regulated roads, no landscape Good, number of stops, many facilities along the line, good portable radio environment, few accidents / incidents, few enforcement, no school zone, heavy traffic, and security cameras Are detected as features of the travel route.
According to such a configuration, the characteristics of the travel route can be subdivided. As a result, it is possible to present to the driver a travel route having characteristics that are more consistent with the driver's preference.

8b Travel route feature detection unit 8c Travel route selection unit 9a Travel route presentation unit 9b Detour presentation unit 10ca Current travel purpose estimation unit (travel purpose estimation unit)
10cb travel history acquisition unit 10cc past travel purpose estimation unit 10fa feature counting unit 10fb preference determination unit 10g preference DB for each purpose (preference storage unit)
11 preference extraction unit 12c detour generation unit 12e detour selection unit

Claims (9)

A preference storage unit that stores the driver's preference for the driving route in association with the driving purpose;
A travel purpose estimation unit that acquires the driver's schedule and estimates the current travel purpose and destination of the driver using the acquired schedule when the destination is not set,
A preference extracting unit for extracting a driver's preference associated with the travel purpose estimated by the travel purpose estimation unit from among the driver's preferences stored in the preference storage unit;
A travel route feature detection unit that detects features of a plurality of travel routes generated as a travel route from the current location to the destination estimated by the travel purpose estimation unit ;
A travel route selection unit that selects a travel route in which the feature detected by the travel route feature detection unit matches the driver's preference extracted by the preference extraction unit from the plurality of travel routes;
A route information presentation system comprising: a travel route presentation unit that presents a travel route selected by the travel route selection unit to a driver. A preference storage unit that stores the driver's preference for the driving route in association with the driving purpose;
When the destination is not set, the destination of the past travel history of the road on which the vehicle is currently traveling and the travel purpose corresponding to the travel history are estimated as the current travel purpose of the destination and the driver. A travel purpose estimation unit;
A preference extracting unit for extracting a driver's preference associated with the travel purpose estimated by the travel purpose estimation unit from among the driver's preferences stored in the preference storage unit;
A travel route feature detection unit that detects features of a plurality of travel routes generated as a travel route from the current location to the destination estimated by the travel purpose estimation unit ;
A travel route selection unit that selects a travel route in which the feature detected by the travel route feature detection unit matches the driver's preference extracted by the preference extraction unit from the plurality of travel routes;
A route information presentation system comprising: a travel route presentation unit that presents a travel route selected by the travel route selection unit to a driver.   The route information presentation system according to claim 1, wherein the driver's preference includes any one of travel time, fee, safety, driving load, travel speed, and landscape.   The route information presentation system according to any one of claims 1 to 3, wherein the travel purpose includes any one of commuting, work, daily life, and leisure. A travel history acquisition unit for acquiring a past travel history of the vehicle;
Using the travel history acquired by the travel history acquisition unit, the past travel purpose estimation unit that estimates the driver's past travel purpose;
Using the travel history acquired by the travel history acquisition unit, for each travel purpose estimated by the past travel purpose estimation unit, a feature counting unit that counts the characteristics of the travel route that the vehicle has traveled in the past;
A preference determination unit that determines the driver's preference for the travel route for each travel purpose using the characteristics of the travel route counted by the feature aggregation unit;
The route information presentation system according to any one of claims 1 to 4, wherein the preference storage unit stores a driver's preference determined by the preference determination unit in association with a travel purpose. A detour generating unit for generating a plurality of detours for avoiding traffic jams currently occurring or traffic jams occurring in the future on the travel route selected by the travel route selection unit;
A detour feature detection unit for detecting features of a plurality of detours generated by the detour generation unit;
Among the plurality of detours, a detour selection unit that selects a detour in which the feature detected by the detour feature detection unit matches the driver's preference extracted by the preference extraction unit;
The route information presentation system according to any one of claims 1 to 5, further comprising: a detour presentation unit that presents a detour selected by the detour selection unit to a driver.   The travel route feature detection unit has a short travel time, a short travel distance, a high travel speed, a low toll road charge, a small number of traffic lights, a long green time, a wide road, a good road surface condition, an obstacle No traffic, little traffic, little slope, many road guidance displays, few left and right turns, few branches, no restricted road, good landscape, few stops, many facilities along the line, mobile Detecting a plurality of characteristics as the characteristics of the travel route among a good radio environment, a small number of accidents / incidents, a large number of enforcement cases, no school zones, a large traffic volume, and security cameras The route information presentation system according to any one of claims 1 to 6. Processing to get the driver's schedule;
When the destination is not set, a process of estimating the current driving destination and destination of the driver using the acquired schedule,
A process of extracting the driver's preference associated with the estimated travel purpose from a predetermined storage device that stores the driver's preference for the travel route in association with the travel purpose;
Processing for detecting characteristics of a plurality of travel routes generated as a travel route from the current location to the estimated destination;
A process of selecting a travel route that matches the driver's preference extracted by the detected feature from the plurality of travel routes;
A process of presenting the selected travel route to the driver;
A route information presentation method characterized by causing a device to execute. When the destination is not set, the destination of the past travel history of the road on which the vehicle is currently traveling and the travel purpose corresponding to the travel history are estimated as the current travel purpose of the destination and the driver. Processing,
A process of extracting the driver's preference associated with the estimated travel purpose from a predetermined storage device that stores the driver's preference for the travel route in association with the travel purpose;
Processing for detecting characteristics of a plurality of travel routes generated as a travel route from the current location to the estimated destination;
A process of selecting a travel route that matches the driver's preference extracted by the detected feature from the plurality of travel routes;
A process of presenting the selected travel route to the driver;
A route information presentation method characterized by causing a device to execute.

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