JP2015064675A - Driving support method, center device, and driving support system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform effective driving support concerning a spot where attention has to be paid in driving a vehicle.SOLUTION: A center device 1 includes: a reception unit 10 for receiving a travel moving image obtained by imaging the circumference of each vehicle mounting an on-vehicle terminal device 2 during traveling from the on-vehicle terminal device 2; a storage unit 15 for storing the travel moving image received by the reception unit 10; an attention point selection unit 17 for selecting a spot where attention has to be paid in driving a vehicle as an attention point; and a delivery unit 19 for delivering a drive support moving image corresponding to the attention point to the on-vehicle terminal device 2 on the basis of the travel moving image stored in the storage unit 15. The on-vehicle terminal device 2 includes: a communication unit 25 for transmitting the travel moving image to the center device 1 and also receiving the driving support image to be delivered from the center device 1; and a display unit 26 for reproducing and displaying the driving support moving image received by the communication unit 25.

Description

  The present invention relates to a driving support method, a center device, and a driving support system for performing driving support for a driver of a vehicle.

  Conventionally, when a vehicle deviates from a route while traveling, a technology for storing the point and performing guidance guidance for preventing the route from deviating when traveling the same point after the next time is known. (Patent Document 1).

JP 2006-64563 A

  In the technique described in Patent Document 1, only points where the vehicle has deviated from the route in the past are targeted for guidance. Therefore, guidance guidance is not performed for a point where the vehicle travels for the first time, even if the point is likely to have the wrong traveling direction.

  In view of the above, a main object of the present invention is to provide effective driving support for points that should be noted when driving a vehicle, such as points where the traveling direction is easily mistaken.

A driving support method according to the present invention uses a center device and a plurality of in-vehicle terminal devices connected to the center device via a communication line, and is arranged around each vehicle equipped with the in-vehicle terminal device. When driving a vehicle by the center device, the traveling video shot during traveling is transmitted from the in-vehicle terminal device to the center device, the traveling video transmitted from the in-vehicle terminal device is accumulated in the center device, and A point to be selected is selected as a caution point, and a driving assistance video corresponding to the caution point is distributed from the center device to the in-vehicle terminal device based on the traveling video stored in the center device, and is distributed from the center device. The driving assistance moving image is reproduced and displayed on the in-vehicle terminal device, thereby providing driving assistance to the driver of the vehicle.
The center device according to the present invention is connected to a plurality of in-vehicle terminal devices via a communication line, and receives from the in-vehicle terminal device a traveling moving image taken while traveling around each vehicle equipped with the in-vehicle terminal device. A receiving unit, a storage unit that accumulates a moving image received by the receiving unit, a caution point selection unit that selects a point to be noted when driving a vehicle as a caution point, and a traveling stored in the storage unit A distribution unit that distributes a driving assistance moving image corresponding to the attention point to the in-vehicle terminal device based on the moving image.
The driving support system according to the present invention includes a center device and a plurality of in-vehicle terminal devices connected to the center device via a communication line, and the center device is arranged around each vehicle on which the in-vehicle terminal device is mounted. As a caution point, a receiving unit that receives a traveling moving image taken during traveling from the in-vehicle terminal device, a storage unit that accumulates the traveling moving image received by the receiving unit, and a point to be noted when driving the vehicle A caution point selection unit to be selected, and a distribution unit that distributes a driving assistance video corresponding to the caution point to the in-vehicle terminal device based on the traveling video stored in the storage unit, the in-vehicle terminal device A communication unit that transmits the driving video to the center device and receives a driving support video distributed from the center device; and a driving support video received by the communication unit. And a display unit for raw display.

  ADVANTAGE OF THE INVENTION According to this invention, effective driving assistance can be performed about the point which should be careful when driving a vehicle.

It is a figure showing an outline of a driving support system concerning one embodiment of the present invention. It is a figure which shows the structure of the driving assistance system which concerns on one Embodiment of this invention. It is a flowchart of the process performed at the time of reception of probe data in a center apparatus. It is a figure which shows an example of the driving | running | working moving image data accumulate | stored in driving | running | working moving image DB. It is a flowchart of the process performed at the time of update of attention point DB in a center apparatus. It is a figure which shows an example of attention point data accumulate | stored in attention point DB. It is a flowchart of the process performed at the time of delivery of a driving assistance moving image in a center apparatus. It is a figure which shows an example of the screen displayed at the time of route setting in a vehicle-mounted terminal device. It is a figure which shows an example of the screen displayed during vehicle travel in a vehicle-mounted terminal device. It is a figure which shows another example of the screen displayed at the time of route setting in a vehicle-mounted terminal device. It is a figure which shows another example of the screen displayed at the time of route setting in a vehicle-mounted terminal device. It is explanatory drawing of equal time reproduction. It is explanatory drawing of uniform speed reproduction | regeneration. It is explanatory drawing of compression / expansion | extension time reproduction | regeneration. It is explanatory drawing of compression and expansion | extension speed reproduction | regeneration. It is explanatory drawing of synchronous reproduction.

  FIG. 1 is a diagram showing an outline of a driving support system according to an embodiment of the present invention. The driving support system shown in FIG. 1 includes a center device 1 and a plurality of in-vehicle terminal devices 2 mounted on the vehicle.

  The center device 1 and the in-vehicle terminal device 2 mounted on each vehicle are connected to each other via a communication line 3. The communication line 3 is configured by a wireless communication network such as a mobile phone line or a wired communication network such as the Internet.

  The center device 1 receives the traveling moving image transmitted from the in-vehicle terminal device 2 mounted on each vehicle, and classifies and accumulates the traveling moving image. And according to the request | requirement from the vehicle-mounted terminal device 2, the driving assistance moving image based on the accumulate | stored driving | running | working moving image is produced | generated, and it distributes to the vehicle-mounted terminal device 2 via the communication line 3. FIG. The driving assistance video distributed in this way is received by the in-vehicle terminal device 2 and reproduced and displayed, whereby driving assistance for the driver of the vehicle is performed.

  As the in-vehicle terminal device 2, a device installed in the vehicle as a dedicated device for the driving support system, a navigation device, or the like can be used. Or you may utilize these as the vehicle-mounted terminal device 2 by bringing a smart phone, a mobile telephone, a personal computer etc. in a vehicle.

  FIG. 2 is a diagram illustrating a configuration of a driving support system according to an embodiment of the present invention. In FIG. 2, only one configuration of the plurality of in-vehicle terminal devices 2 constituting the driving support system is illustrated as a representative example, but the other in-vehicle terminal devices 2 have the same configuration. .

  The in-vehicle terminal device 2 includes a camera 21, an in-vehicle sensor 22, a probe data storage unit 23, a driver profile storage unit 24, a communication unit 25, and a display unit 26.

  The camera 21 captures an image of the surroundings of the vehicle on which the in-vehicle terminal device 2 is mounted, for example, while traveling in front of the vehicle, and acquires a traveling moving image representing a scene visually recognized by the driver while the vehicle is traveling. The traveling moving image acquired by the camera 21 is output to the probe data storage unit 23. In addition, you may utilize the other camera mounted in the vehicle, without providing the camera 21 in the vehicle-mounted terminal device 2. FIG.

  The in-vehicle sensor 22 is a sensor for measuring the traveling state of the vehicle, and is configured using, for example, a GPS sensor, a vehicle speed sensor, an acceleration sensor, an angular velocity sensor, or the like. Measurement information relating to the traveling state of the vehicle measured by the in-vehicle sensor 22, for example, measurement information such as position, time, traveling speed, acceleration, traveling direction, and the like is output to the probe data storage unit 23.

  The probe data storage unit 23 divides the traveling moving image from the camera 21 by a predetermined photographing time unit, associates it with the measurement information from the in-vehicle sensor 22 corresponding to the photographing time, and transmits it as probe data to be transmitted to the center device 1. Remember. That is, in the probe data storage unit 23, measurement information relating to a traveling moving image and a traveling state of the vehicle every predetermined time is stored as probe data.

  The driver profile storage unit 24 stores a preset driver profile. The driver profile is information representing the characteristics of the vehicle on which the in-vehicle terminal device 2 is mounted and the characteristics of the driver of the vehicle. For example, the vehicle type, vehicle dimensions, age, gender, residence, driving tendency, main vehicle Includes information such as intended use.

  The communication unit 25 reads the probe data stored in the probe data storage unit 23 and the driver profile stored in the driver profile storage unit 24 at predetermined timings, and sends them to the center device 1 via the communication line 3. Send. The probe data transmitted to the center device 1 may be deleted from the probe data storage unit 23. Furthermore, when the driver of the vehicle performs a predetermined operation on the in-vehicle terminal device 2, the communication unit 25 transmits a route search request to the center device 1, and the communication line 3 from the center device 1 accordingly. Route information, attention point information, and driving assistance video delivered via the. The route search request includes information indicating the surrounding environment of the vehicle at the time of transmission, the vehicle state, driver characteristics, and the like, as well as information such as a departure place, a destination, and search conditions. These pieces of information are determined based on measurement information from the in-vehicle sensor 22 and a driver profile stored in the driver profile storage unit 24.

  The display unit 26 is a part for displaying various information and images such as route information, attention point information, and driving support moving images received by the communication unit 25, and is configured by a liquid crystal display or the like. For example, a map of a recommended route of the vehicle based on the route information is displayed on the display unit 26. Further, when a caution point exists on the recommended route and a driving support video for the caution point is distributed from the center device 1, the caution point and the driving support video are displayed together with the recommended route on the display unit 26. . Note that the caution point is a point to be noted when driving the vehicle, and corresponds to an intersection where the traveling direction is easily mistaken or an intersection where a temporary stop is easily overlooked.

  The center device 1 includes a receiving unit 10, a probe data collecting unit 11, a traveling moving image classifying unit 12, an external content collecting unit 13, a caution point specifying unit 14, a storage unit 15, a route searching unit 16, a caution point selecting unit 17, and a moving image selection. A unit 18 and a distribution unit 19 are provided. The storage unit 15 includes databases of a travel environment DB 151, a map DB 152, a caution point DB 153, and a travel video DB 154.

  The receiving unit 10 receives the probe data and the driver profile transmitted from the in-vehicle terminal device 2. That is, the center device 1 can receive, from the plurality of in-vehicle terminal devices 2 constituting the driving support system, the traveling moving image captured while traveling around each vehicle as probe data. The probe data and driver profile received by the receiving unit 10 are output to the probe data collecting unit 11.

  The receiving unit 10 can also receive a route search request transmitted from the in-vehicle terminal device 2. The route search request received by the receiving unit 10 is output to the route searching unit 16.

  The probe data collection unit 11 collects and temporarily stores the probe data and driver profile received by the reception unit 10 and outputs them to the traveling moving image classification unit 12 at predetermined timings.

  The travel video classification unit 12 classifies the travel video included in the probe data output from the probe data collection unit 11 and records it in the travel video DB 154 in the storage unit 15. The traveling video classifying unit 12 is based on measurement information on the traveling state of the vehicle in the probe data, driver profile, traveling environment data and map data recorded in the traveling environment DB 151 and the map DB 152 of the storage unit 15, respectively. The traveling moving images are classified according to the procedure described later. Then, attribute data corresponding to the classification result is given to the travel video and recorded in the travel video DB 154.

  The external content collection unit 13 collects various content information provided from an external content provider, classifies it by date and time, and places it as travel environment data related to the travel environment of each vehicle equipped with the in-vehicle terminal device 2. Record in the travel environment DB 151 in the storage unit 15. For example, weather information of each location, traffic information indicating road conditions such as traffic jams, accidents, traffic regulations, etc., can be collected as content information and recorded as travel environment data.

  The caution point specifying unit 14 uses the attribute data recorded together with the travel video in the travel video DB 154, based on the past travel history of each vehicle on which the in-vehicle terminal device 2 is mounted, by a method described later. A point to be noted when driving the vehicle is specified as a caution point. Then, information regarding the specified attention point is recorded in the attention point DB 153 in the storage unit 15 as attention point data.

  The accumulation unit 15 is a part for accumulating and storing various data, and is configured using a recording medium such as a hard disk. In the storage unit 15, the above-described travel environment DB 151, map DB 152, attention point DB 153, and travel video DB 154 are provided. The travel environment DB 151 is a database in which travel environment data collected by the external content collection unit 13 is accumulated. The map DB 152 is a database that stores map data. The attention point DB 153 is a database in which attention point data related to the attention point specified by the attention point specifying unit 14 is accumulated. The traveling moving image DB 154 is a database in which traveling moving image data received from each in-vehicle terminal device 2 by the receiving unit 10 and classified by the traveling moving image classifying unit 12 is accumulated.

  When a route search request is transmitted from the in-vehicle terminal device 2 and received by the receiving unit 10, the route search unit 16 stores the travel environment data and map data recorded in the travel environment DB 151 and the map DB 152 of the storage unit 15, respectively. Based on the procedure described later, the recommended route of the vehicle on which the in-vehicle terminal device 2 is mounted is searched. Then, route information related to the searched recommended route is output to the attention point selection unit 17.

  The attention point selection unit 17 selects an attention point corresponding to the recommended route searched by the route search unit 16 based on the attention point data recorded in the attention point DB 153. That is, the attention point corresponding to the point to be noted when driving the vehicle according to the recommended route is selected from the attention points specified by the attention point specifying unit 14 based on the past traveling history of each vehicle. Then, information regarding the selected attention point is output to the moving image selection unit 18 together with the route information as attention point information.

  The video selection unit 18 selects a travel video to be distributed as a driving support video from the travel video recorded in the travel video DB 154 in the storage unit 15. Specifically, the video selection unit 18 is based on attribute data assigned to each travel video recorded in the travel video DB 154, and the travel video corresponding to the attention point selected by the attention point selection unit 17 The driving | moving moving image image | photographed in the vehicle which drive | worked the attention point correctly is selected from. When a plurality of such traveling moving images are accumulated, it is preferable to select any traveling moving image by a method described later. The traveling moving image selected by the moving image selection unit 18 is output to the distribution unit 19 together with route information and attention point information.

  The distribution unit 19 makes a route search request via the communication line 3 along with the route information and the caution point information, using the travel video selected by the video selection unit 18 as a driving support video corresponding to the caution point on the recommended route. The transmitted in-vehicle terminal device 2 is distributed. Thereby, the driving assistance moving image about the point which should be careful when driving a vehicle according to the recommended route is delivered to the in-vehicle terminal device 2 from the center device 1 along with the search result of the recommended route.

  Next, processing of the center device 1 will be described. FIG. 3 is a flowchart of processing executed when the center apparatus 1 receives probe data.

  In step S110, the receiving unit 10 receives the probe data transmitted from the in-vehicle terminal device 2 together with the driver profile.

  In step S120, the traveling moving image classifying unit 12 specifies the shooting location of the traveling moving image included in the probe data received in step S110. Specifically, the shooting location of the travel video is specified based on the measurement information related to the travel state of the vehicle transmitted as the probe data together with the travel video and the map data recorded in the map DB 152 of the storage unit 15. For example, based on measurement information such as position, time, travel speed, acceleration, and traveling direction, the link ID, latitude / longitude, location name, etc. from the shooting start point to the shooting end point of the moving video can be specified from the map data. it can.

  In step S130, the traveling moving image classifying unit 12 specifies the surrounding environment of the vehicle when the traveling moving image included in the probe data received in step S110 is captured. Specifically, the surrounding environment at the time of shooting is specified by extracting information on the surrounding environment corresponding to the shooting location specified in step S120 from the driving environment data recorded in the driving environment DB 151 of the storage unit 15. . For example, the weather, temperature, time zone, traffic jam condition, road surface condition, etc. at the time of shooting can be specified from the travel environment data. At this time, the map data recorded in the map DB 152 may be used.

  In step S140, the traveling moving image classifying unit 12 specifies driver characteristics corresponding to the probe data received in step S110. Specifically, based on the driver profile received together with the probe data in step S110, the characteristics of the driver of the vehicle equipped with the in-vehicle terminal device 2 that has transmitted the probe data are specified as driver characteristics. For example, the driver's age, sex, residence, driving tendency, main vehicle usage purpose, and the like can be specified from the driver profile.

  In step S150, the traveling moving image classifying unit 12 specifies a vehicle characteristic corresponding to the probe data received in step S110. Specifically, based on the driver profile received together with the probe data in step S110, the characteristics of the vehicle equipped with the in-vehicle terminal device 2 that has transmitted the probe data are specified as vehicle characteristics. For example, the vehicle type, vehicle dimensions, etc. can be specified from the driver profile.

  In step S160, the traveling moving image classifying unit 12 determines abnormal traveling in the vehicle when the traveling moving image included in the probe data received in step S110 is captured. Specifically, based on measurement information related to the driving state of the vehicle transmitted as the probe data together with the driving video, map data recorded in the map DB 152 of the storage unit 15, etc. It is determined whether or not the vehicle has performed abnormal traveling such as traveling that is not followed. Alternatively, the presence or absence of abnormal traveling may be determined in the in-vehicle terminal device 2 while the vehicle is traveling, and the determination result may be transmitted from the in-vehicle terminal device 2 to the center device 1 together with the probe data. When it is determined that there is abnormal running, it is preferable to specify the running point at that time based on map data or the like recorded in the map DB 152.

  Through the processing in steps S120 to S160 described above, the moving image included in the probe data received in step S110 is classified in the center device 1.

  In step S170, the travel video classification unit 12 records the travel video included in the probe data received in step S110 in the travel video DB 154 in the storage unit 15, and updates the travel video DB 154. At this time, attribute data corresponding to the classification results in steps S120 to S160 is assigned to the travel video and recorded in the travel video DB 154. As a result, the traveling moving image is accumulated in the accumulation unit 15.

  FIG. 4 is a diagram illustrating an example of traveling moving image data stored in the traveling moving image DB 154. The travel video DB 154 stores travel video data in a format such as that shown in FIG. The travel video DB 154 shown in FIG. 4 includes a video file 30 that is a data file of a travel video, a link ID 31, a start point 32, an end point 33, a shooting date and time 34, a travel speed 35, a weather 36, an air temperature 37, a traffic jam situation 38, Each attribute data of road surface condition 39, driver characteristic 40, vehicle characteristic 41, departure point 42, violation point 43 is included.

  The link ID 31 represents the link ID of the road on which the vehicle traveled while shooting each travel video. When the vehicle travels on a plurality of links during shooting, a link ID for each link is recorded here.

  The start point 32 and the end point 33 represent the coordinates of the shooting start point and the shooting end point of each traveling moving image, respectively. For example, for the video file A, the coordinate value (X (A1), Y (A1)) on the link whose link ID is A1 is recorded as the start point 32, and the coordinate value (X on the link whose link ID is A2) (A2), Y (A2)) is recorded as the end point 33.

  The shooting date 34 represents the shooting date, shooting start time, and shooting end time of each traveling moving image.

  The traveling speed 35 represents the traveling speed of the vehicle when each traveling moving image is captured. In addition, when the traveling speed of the vehicle changes by a predetermined amount or a predetermined ratio or more during photographing, the value before and after the change may be recorded as the traveling speed 35, or the average value may be recorded as the traveling speed 35. Good.

  The weather 36 and the temperature 37 respectively represent the weather and temperature at the time of shooting at the shooting point of each traveling video. A traffic jam situation 38 and a road surface situation 39 respectively represent a traffic jam situation and a road surface situation at the time of shooting each traveling video.

  The driver characteristic 40 represents the characteristics of the driver of the vehicle when each traveling moving image is captured. The content recorded in the driver characteristic 40 is determined according to the driver characteristic specified in step S140 of FIG.

  The vehicle characteristics 41 represent the characteristics of the vehicle that captured each traveling moving image. The content recorded in the vehicle characteristic 41 is determined according to the vehicle characteristic specified in step S150 of FIG.

  The departure point 42 is attribute data recorded when the vehicle departs from the traveling route during shooting of the traveling moving image, and represents the coordinates of the departure point. The content recorded at the departure point 42 is determined according to the determination result of step S160 in FIG. In the example of FIG. 4, the coordinate values (X (P1), Y (P1)) for points that deviate from the travel route during shooting of the moving image file C are recorded in the deviant points 42. In addition, when the route departure is performed a plurality of times during the shooting of the traveling moving image, it is preferable to record the coordinates of each departure point in the departure point 42.

  The violation point 43 is attribute data that is recorded when the vehicle violates the traffic rules during shooting of the moving video, for example, when the vehicle violates the suspension or one-way violation, and represents the coordinates of the violation point. ing. The content recorded at this violation point 43 is also determined according to the determination result of step S160 in FIG. In the example of FIG. 4, the coordinate values (X (P2), Y (P2)) about the point where the traffic rule violation was run during the shooting of the moving image file A are recorded in the violation point 43. In addition, when the driving | running | working of traffic rule violation is performed in multiple times during imaging | photography of a driving | running | working moving image, it is preferable to record the coordinate of each violation point in the violation point 43. FIG.

  FIG. 5 is a flowchart of processing executed when the attention point DB 153 is updated in the center device 1.

  In step S210, the caution point specifying unit 14 extracts abnormal traveling data from the traveling moving image DB 154. Here, among the attribute data recorded together with the travel video in the travel video DB 154, attribute data corresponding to the travel point when the vehicle travels abnormally is extracted as abnormal travel data. Specifically, in the traveling moving image data illustrated in FIG. 4, the coordinate values recorded at the departure point 42 and the violation point 43 are extracted as abnormal traveling data. That is, in the example of FIG. 4, the coordinate values (X (P1), Y (P1)) corresponding to the moving image file C and the coordinate values (X (P2), Y (P2)) corresponding to the moving image file A are obtained. Extracted as abnormal running data.

  In step S220, the caution point specifying unit 14 specifies the caution point based on the abnormal running data extracted in step S210. Specifically, the point represented by the coordinate value extracted as the abnormal running data in step S210 is specified as the attention point.

  In step S230, the attention point specifying unit 14 records the attention point data regarding the attention point specified in step S220 in the attention point DB 153 in the storage unit 15, and updates the attention point DB 153. Here, when the attention point data regarding the attention point specified in step S220 is already recorded in the attention point DB 153, the value of the attention point data is updated based on the abnormal running data extracted in step S210. On the other hand, when the attention point data related to the attention point specified in step S220 is not recorded in the attention point DB 153, new attention point data is created based on the abnormal running data extracted in step S210 and recorded in the attention point DB 153. To do. Thereby, based on the past travel history of each vehicle on which the in-vehicle terminal device 2 is mounted, caution point data relating to points to be noted when driving the vehicle is accumulated in the accumulation unit 15.

  FIG. 6 is a diagram illustrating an example of attention point data stored in the attention point DB 153. The attention point DB 153 stores attention point data in a format as shown in FIG. 6, for example. The attention point DB 153 illustrated in FIG. 6 includes data of an attention point ID 50, an entry link ID 51, an exit link ID 52, a coordinate 53, a travel count 54, a departure count 55, and a violation count 56.

  The attention point ID 50 represents a unique ID set for each attention point.

  The approach link ID 51 represents the link ID of the road that enters each caution point. The exit link ID 52 represents a link ID of a road exiting from each caution point. The coordinate 53 represents the coordinate of each attention point.

  The number of times of travel 54 represents the number of times the vehicle has traveled past each caution point. The number of departures 55 represents the number of departures from the travel route when the vehicle has traveled past each caution point. The number of violations 56 represents the number of times the vehicle has traveled in violation of the traffic rules when the vehicle has traveled around each caution point in the past.

  FIG. 7 is a flowchart of processing executed when the center device 1 distributes driving assistance moving images.

  In step S <b> 310, the receiving unit 10 receives the route search request transmitted from the in-vehicle terminal device 2.

  In step S320, the route search unit 16 performs route search processing based on the travel environment data and map data recorded in the travel environment DB 151 and the map DB 152 of the storage unit 15, respectively. Here, the departure point of the vehicle equipped with the in-vehicle terminal device 2 that has transmitted the route search request based on information such as the departure point, destination, and search conditions included in the route search request received by the receiving unit in step S310. Search for a recommended route from to the destination. At this time, based on the caution point data recorded in the caution point DB 153, a route that avoids a point where the departure from the route or the traffic rule that frequently violates the traffic rule has been frequently performed in the past may be searched. Moreover, you may set search conditions based on the driver profile received from the said vehicle.

  In step S330, the attention point selection unit 17 selects an attention point corresponding to the recommended route searched in step S330 based on the attention point data recorded in the attention point DB 153. Here, an attention point on the recommended route is selected from the attention points represented by the attention point data. Specifically, in the attention point data illustrated in FIG. 6, both the road link represented by the entry link ID 51 and the road link represented by the exit link ID 52 are included in the recommended route, and the order of these is the recommended route. Those that match the direction of travel are selected as attention points on the recommended route. Thereby, the attention point corresponding to the recommended route is selected from the attention points specified based on the past travel history of each vehicle on which the in-vehicle terminal device 2 is mounted.

  Note that the caution point selection unit 17 may exclude a caution point with a small number of times of abnormal running or a ratio from the selection target when selecting the caution point in step S330. Specifically, in the attention point data illustrated in FIG. 6, the values of the number of deviations 55 and the number of violations 56 are less than a predetermined threshold, and the value obtained by dividing these by the number of times of travel 54 is less than the predetermined threshold. Even if the object exists on the recommended route, it is excluded from the selection targets in step S330. As a result, the number of times that each vehicle deviates from the travel route in the past or a percentage that is equal to or greater than a predetermined threshold, and the number of times or percentage that each vehicle has traveled in the past without following the traffic rules is equal to or greater than a predetermined threshold. At least one of the above can be selected as an attention point corresponding to the recommended route. Further, at this time, the number of attention points to be selected may be changed in consideration of the surrounding environment, driver characteristics, vehicle characteristics, and the like in the delivery destination vehicle.

  In step S340, the moving image selection unit 18 selects a driving support moving image corresponding to the attention point selected in step S330. Here, based on the attribute data assigned to each traveling moving image recorded in the traveling moving image DB 154, a photograph is taken of a vehicle that has correctly traveled the attention point in the traveling moving image corresponding to the selected attention point. Select the running video. Specifically, in the travel video data illustrated in FIG. 4, the link ID 31 includes the entry link ID and the exit link ID of the attention point, and the coordinate value is included in both the departure point 42 and the violation point 43. A driving video in which no is recorded is selected as a driving assistance video.

  When two or more traveling videos satisfying the above conditions are recorded in the traveling video DB 154 for one caution point, the video selection unit 18 performs stepping as one of the driving assistance videos. It is preferable to select in S340. For example, the ambient environment at the time of shooting, the driver characteristics, the vehicle characteristics, and the like represented by the attribute data of each traveling video are shown as the ambient environment, the driver characteristics in the distribution destination vehicle, that is, the vehicle equipped with the in-vehicle terminal device 2 that transmits the route search request. Compare with vehicle characteristics. As a result, those having the highest similarity are selected as driving assistance moving images. Thereby, an optimal driving | running | working moving image can be selected as a driving assistance moving image from the some driving | moving moving images corresponding to an attention point. Furthermore, the driving assistance moving image may be selected by calculating the reliability of each traveling moving image based on the driver characteristics and the like.

  In step S350, the distribution unit 19 obtains the route information related to the recommended route searched in step S320, the attention point information related to the attention point selected in step S330, and the driving assistance video selected in step S340. It is distributed to the in-vehicle terminal device 2 that is the transmission source of the route search request received in (1).

  In the center device 1, each process as described above is executed in response to the probe data and the route search request transmitted from the in-vehicle terminal device 2.

  Next, the display screen of the in-vehicle terminal device 2 will be described. FIG. 8 is a diagram illustrating an example of a screen displayed on the display unit 26 when a route is set in the in-vehicle terminal device 2.

  In the screen shown in FIG. 8, a recommended route 60 and caution point icons 61, 62, and 63 that indicate caution points existing on the recommended route 60 are displayed. These are displayed based on route information and attention point information distributed from the center device 1. FIG. 8 shows a state in which a caution point corresponding to the caution point icon 62 is selected on the recommended route 60 as a display object of the driving assistance moving image. A route selection switch 64 for selecting any one of a plurality of recommended routes is also displayed. Here, for example, when the in-vehicle terminal device 2 is a smartphone, any one of the attention point icons 61, 62, and 63 can be selected by a touch operation, and a moving image of the selected corresponding portion can be reproduced. .

  In FIG. 8, a display frame 65 for displaying the driving support moving image distributed from the center device 1 is provided in the upper right part of the screen. In the example of FIG. 8, the attention point corresponding to the attention point icon 62 is selected on the recommended route 60 as described above. Therefore, among the driving support moving images distributed from the center device 1 for each caution point, the driving support moving image corresponding to the caution point is displayed in the display frame 65.

  Below the display frame 65, a playback position bar 66 indicating the playback position of the currently displayed driving assistance video, an operation switch 67 for selecting a playback method, and automatic playback according to the running state of the vehicle. An automatic regeneration switch 68 is displayed. Below that, a display point icon 69 indicating to which caution point the currently displayed driving assistance video corresponds, and a display point switching switch for switching the caution point to be displayed in the driving assistance video. 70 and 71 are displayed.

  FIG. 9 is a diagram illustrating an example of a screen displayed on the display unit 26 while the vehicle is traveling in the in-vehicle terminal device 2. In the screen shown in FIG. 9, a current location icon 80 indicating the current traveling position and traveling direction of the vehicle is displayed on the recommended route 60. At this point, the recommended route has already been selected, and the vehicle is traveling according to the recommended route, so the route selection switch 64 in FIG. 8 is not displayed.

  FIG. 10 is a diagram illustrating another example of a screen displayed on the display unit 26 when setting a route in the in-vehicle terminal device 2. On the screen shown in FIG. 10, caution point icons 81, 82, and 83 are displayed on the recommended route 60 instead of the caution point icons 61, 62, and 63 in FIG. 8. These attention point icons 81, 82, and 83 change in size according to the importance of the corresponding attention point. Note that the importance of each caution point can be calculated based on the number and rate of abnormal running in the center device 1, for example. Moreover, although demonstrated in FIG. 8, when the vehicle-mounted terminal device 2 is a smart phone, for example, it is possible to select any of the caution point icons 81, 82, and 83 by a touch operation, and the moving image of the selected corresponding part Can be played.

  FIG. 11 is a diagram illustrating still another example of a screen displayed on the display unit 26 when setting a route in the in-vehicle terminal device 2. In addition to the contents of FIG. 10, detailed information 72 indicating information on characteristics of the travel route, vehicle, driver, etc. when the currently displayed driving assistance video is taken is further displayed on the screen shown in FIG. ing.

  Next, a method for reproducing a driving assistance video will be described. 8 to 11, when the operation switch 67 or the automatic regeneration switch 68 is selected and operated, the driving support moving image is reproduced and displayed on the display unit 26 of the in-vehicle terminal device 2 by a reproduction method corresponding to the operation. . Driving assistance moving image playback methods are classified into equal time playback, uniform speed playback, compression / expansion time playback, compression / extension speed playback, synchronous playback, and the like according to the operation content and the running state of the vehicle. Below, these reproduction | regenerating methods are demonstrated in order using each explanatory drawing shown to FIGS. 12-16, the code | symbol 91 has shown the relationship between the frame interval of the moving image at the time of imaging | photography, and the moving distance of a vehicle, and the code | symbol 92 has shown the relationship between the frame interval of the moving image at the time of reproduction | regeneration, and the moving distance of a vehicle. Show.

  FIG. 12 is a diagram for explaining equal time reproduction. As shown in FIG. 12, in the equal time reproduction, each frame of the driving assistance moving image photographed at a constant time interval is reproduced and displayed at the same interval as at the time of photographing. The equal time playback is performed, for example, when the playback is selected by the operation switch 67 before the recommended route is searched and the vehicle starts running or when the vehicle is stopped, when the automatic playback switch 68 is selected, or when the automatic playback is performed. This is performed when the vehicle is traveling in a place more than a predetermined distance from the attention point with the switch 68 selected.

  FIG. 13 is a diagram for explaining uniform speed reproduction. As shown in FIG. 13, in the uniform speed playback, the distance between the frames is adjusted so that the moving distance of the vehicle between the frames, which changes according to the traveling speed of the vehicle at the time of shooting, becomes constant at the time of playback. Play and display the support video. As a result, the driving assistance moving image is reproduced and displayed at a reproduction speed corresponding to a constant traveling speed (average traveling speed at the time of shooting). The uniform speed reproduction is performed, for example, when a reproduction is selected by the operation switch 67 before the recommended route is searched and the vehicle starts running or when the vehicle is stopped, when the automatic reproduction switch 68 is selected, or automatic reproduction. This is performed when the vehicle is traveling in a place more than a predetermined distance from the attention point with the switch 68 selected.

  FIG. 14 is a diagram for explaining compression / decompression time reproduction. As shown in FIG. 14, in compression / decompression time reproduction, each frame of a driving assistance moving image taken at a certain time interval is compressed (or expanded) at a predetermined ratio and reproduced and displayed. Although FIG. 14 shows the case of compression playback, that is, fast-forward playback, decompression playback, that is, slow-back playback can also be performed. The compression / decompression time reproduction is performed, for example, when fast turn or slow turn is selected by the operation switch 67 while the vehicle is stopped.

  FIG. 15 is a diagram for explaining the compression / decompression speed reproduction. As shown in FIG. 13, in the compression / extension speed reproduction, the interval between the frames is adjusted so that the moving distance of the vehicle between the frames changed according to the traveling speed of the vehicle at the time of shooting is constant. The interval is compressed (or expanded) at a certain rate and displayed. As a result, the driving support moving image is reproduced and displayed at a reproduction speed corresponding to a constant traveling speed that is faster (or slower) than the average traveling speed at the time of shooting. The compression / decompression speed reproduction is performed, for example, when a fast turn or a slow turn is selected by the operation switch 67 before the recommended route is searched and the vehicle starts running.

  FIG. 16 is a diagram for explaining synchronous reproduction. As shown in FIG. 16, in synchronous reproduction, the interval between frames is compressed or expanded according to the ratio of the traveling speed of the vehicle at the time of shooting and the traveling speed of the vehicle at the time of reproduction. As a result, the driving support moving image is reproduced and displayed at a reproduction speed synchronized with the traveling speed of the vehicle. Synchronous reproduction is performed, for example, when the vehicle is traveling in a shooting place of a driving assistance moving image with the automatic reproduction switch 68 selected. Alternatively, it is performed when it is predicted that the vehicle will travel through the shooting place of the driving assistance moving image after a certain period of time with the automatic regeneration switch 68 selected. Note that the regeneration timing may be adjusted in consideration of the traveling state of the vehicle, for example, synchronous regeneration is performed when the vehicle is stopped at a red light.

  In the synchronous reproduction described above, it is not always necessary to reproduce and display the driving assistance moving image at a reproduction speed synchronized with the traveling speed of the vehicle. For example, a value obtained by adding a predetermined speed to the traveling speed of the vehicle at the time of reproduction is calculated as the preceding traveling speed, and the interval between each frame is compressed or reduced according to the ratio of the traveling speed of the vehicle at the time of shooting and the calculated preceding traveling speed. Expand and play back. As a result, the driving assistance moving image can be reproduced and displayed at a reproduction speed synchronized with a predetermined preceding traveling speed that is faster than the traveling speed of the vehicle. In this way, since the scenery ahead of the scenery seen from the traveling vehicle can be displayed as the driving assistance moving image, the correct traveling state of the vehicle can be presented in an easily understandable manner.

  Moreover, although each reproduction | regeneration method demonstrated above can also be used independently, respectively, you may use combining several. For example, when a vehicle is traveling in front of a caution point, the driving support video is reproduced and displayed at normal playback speed by playing back at the same time or synchronized. When the vehicle is traveling at a caution point, the compression / extension time is reproduced. And by driving the compression / decompression speed, the driving assistance video is delayed and played. In this way, when the driving state of the vehicle changes at the caution point, the playback speed of the driving assistance moving image can be reduced. As a result, the vehicle guidance at the caution point can be performed more effectively.

  As described above, the in-vehicle terminal device 2 reproduces and displays the driving assistance moving image by using different reproduction methods depending on the traveling state of the vehicle. Thereby, the reproduction | regeneration display form of a driving assistance moving image can be changed according to the driving | running | working state of a vehicle.

  According to one embodiment of the present invention described above, the following operational effects are obtained.

(1) The driving support system includes a center device 1 and a plurality of in-vehicle terminal devices 2 connected to the center device 1 via a communication line 3. The center device 1 receives, from the in-vehicle terminal device 2, a traveling moving image taken while traveling around each vehicle equipped with the in-vehicle terminal device 2, and accumulation for storing the traveling moving image received by the receiving unit 10. On-vehicle driving support video corresponding to the caution point based on the driving video stored in the storage unit 15, the caution point selection unit 17 that selects a point to be noted as a caution point when driving the vehicle And a distribution unit 19 that distributes to the terminal device 2. The in-vehicle terminal device 2 transmits a driving video to the center device 1, and receives a driving support video distributed from the center device 1 and a display for reproducing and displaying the driving support video received by the communication unit 25. Part 26. In this driving support system, the driving support moving image distributed from the center device 1 is reproduced and displayed on the in-vehicle terminal device 2 to provide driving support to the driver of the vehicle. Since it did in this way, effective driving assistance can be performed about the point which should be careful when driving a vehicle.

(2) The in-vehicle terminal device 2 reproduces and displays a driving assistance video according to the driving state of the vehicle by a reproduction method such as equal time reproduction, uniform speed reproduction, compression / expansion time reproduction, compression / extension speed reproduction, and synchronous reproduction. Change form. Since it did in this way, a driving assistance animation can be reproduced and displayed by an appropriate method according to the running state of vehicles.

(3) The vehicle-mounted terminal device 2 combines driving with equal time playback and synchronous playback with compression / expansion time playback and compression / extension speed playback, so that when the vehicle driving state changes at a point of caution, a driving assistance video Playback speed can be reduced. In this way, vehicle guidance at the caution point can be performed in an easy-to-understand manner, and effective driving support can be realized.

(4) In the synchronized playback, the in-vehicle terminal device 2 plays back and displays the driving support moving image at a playback speed synchronized with the traveling speed of the vehicle or a preceding traveling speed obtained by adding a predetermined speed to the traveling speed of the vehicle. Since it did in this way, the driving state of a correct vehicle can be shown in an easy-to-understand manner and effective driving support can be performed.

(5) The in-vehicle terminal device 2 reproduces and displays the driving assistance moving image at a reproduction speed corresponding to a constant traveling speed in the uniform speed reproduction and the compression / decompression speed reproduction. Since it did in this way, irrespective of the travel speed of the vehicle at the time of imaging | photography, the driving state of a correct vehicle can be shown clearly and effective driving assistance can be performed.

(6) In the center device 1, the attention point specifying unit 14 extracts abnormal traveling data from the traveling moving image DB 154 in the storage unit 15 (step S210), and specifies an attention point based on the extracted abnormal traveling data (step S210). S220), the attention point DB 153 is updated (step S230). Further, the caution point selection unit 17 selects a caution point based on the caution point data recorded in the caution point DB 153 of the storage unit 15 (step S330). As a result, since the attention point is selected based on the past travel history of each vehicle equipped with the in-vehicle terminal device 2, it is possible to reliably perform driving support for a point to be noted when driving the vehicle. .

(7) In the center device 1, in the caution point specifying unit 14, a point where each vehicle equipped with the in-vehicle terminal device 2 deviates from a preset travel route and each vehicle equipped with the in-vehicle terminal device 2 are past. The point where the vehicle travels without following the traffic rules is specified as the caution point, and the caution point selection unit 17 selects the caution point. Since it did in this way, the point where the route run or the abnormal driving | running | working of the traffic rule violation was performed in the past can be selected as a caution point, and driving assistance can be performed.

(8) The center device 1 uses the caution point selection unit 17 to select a point where the number or ratio of each vehicle on which the vehicle-mounted terminal device 2 has deviated from the travel route in the past is equal to or greater than a predetermined threshold, and the vehicle-mounted terminal device 2 It is possible to select at least one of the points where the number or the ratio of each mounted vehicle that has traveled without following the traffic rules in the past as a predetermined threshold or more as the attention point. In this way, it is possible to preferentially select a point that is likely to cause abnormal departure due to route deviation or traffic rule violation as a caution point, and perform driving support.

(9) In the center device 1, the video selection unit 18 selects the caution point in the travel video recorded in the travel video DB 154 of the storage unit 15 with respect to the caution point selected by the caution point selection unit 17. A traveling moving image shot in a vehicle that has traveled correctly is selected (step S340). The distribution unit 19 distributes the traveling moving image thus selected by the moving image selection unit 18 to the in-vehicle terminal device 2 (step S350). Thereby, based on the driving | running | working animation image | photographed in the vehicle which drive | worked the attention point correctly among the driving | running | working animations accumulate | stored in the accumulation | storage part 15, the driving assistance moving image corresponding to an attention point is delivered. Since it did in this way, the moving image image | photographed in the driving | running | working state of the correct vehicle in a caution point can be delivered as a driving assistance moving image.

(10) The center device 1 uses the moving image selection unit 18 based on at least one of the ambient environment, driver characteristics, and vehicle characteristics at the time of shooting, and at least one of the ambient environment, driver characteristics, and vehicle characteristics of the delivery destination vehicle. A traveling video to be distributed as a driving assistance video can be selected from the traveling videos stored in the traveling video DB 154 of the storage unit 15. In this way, it is possible to distribute the driving animation that is most suitable for the vehicle as the delivery destination as the driving assistance animation.

  In the embodiment described above, the example in which the driving support moving image is distributed to the in-vehicle terminal device 2 mounted on the vehicle has been described. However, the distribution destination of the driving support moving image is not limited thereto. For example, the driving assistance moving image may be distributed to a personal computer connected to the Internet at home. In this way, a driving assistance video can be provided in advance to a user who is planning a trip.

  Further, in the embodiment described above, an example has been described in which the traveling moving image captured by the in-vehicle terminal device 2 is accumulated in the center device 1 and any one of the traveling moving images is selected and distributed as a driving assistance moving image. Still images may be used instead of movies. Further, both moving images and still images may be used.

  The embodiments and modifications described above are merely examples, and the present invention is not limited to these contents as long as the features of the invention are not impaired.

DESCRIPTION OF SYMBOLS 1 Center apparatus 2 In-vehicle terminal device 3 Communication line 10 Receiving part 11 Probe data collection part 12 Traveling video classification part 13 External content collection part 14 Caution point specification part 15 Accumulation part 16 Route search part 17 Caution point selection part 18 Movie selection part 19 Distribution unit 21 Camera 22 Vehicle-mounted sensor 23 Probe data storage unit 24 Driver profile storage unit 25 Communication unit 26 Display unit 151 Driving environment DB
152 Map DB
153 Attention point DB
154 Travel video DB

Claims (14)

A driving support method using a center device and a plurality of in-vehicle terminal devices connected to the center device via a communication line,
A traveling moving image taken while traveling around each vehicle equipped with the in-vehicle terminal device is transmitted from the in-vehicle terminal device to the center device,
The traveling video transmitted from the in-vehicle terminal device is accumulated in the center device,
The center device selects a point to be careful when driving the vehicle as a caution point,
Based on the running video accumulated in the center device, driving assistance video corresponding to the attention point is delivered from the center device to the in-vehicle terminal device,
A driving support method for performing driving support for a driver of the vehicle by reproducing and displaying the driving support moving image distributed from the center device on the in-vehicle terminal device. The driving support method according to claim 1,
The vehicle-mounted terminal device changes a reproduction display form of the driving assistance moving image according to a traveling state of the vehicle. The driving support method according to claim 2,
The vehicle-mounted terminal device reduces the playback speed of the driving assistance video when the traveling state of the vehicle changes at the caution point. The driving support method according to claim 2,
The vehicle-mounted terminal device reproduces and displays the driving assistance moving image at a reproduction speed synchronized with a traveling speed of the vehicle or a preceding traveling speed obtained by adding a predetermined speed to the traveling speed of the vehicle. The driving support method according to claim 2,
The in-vehicle terminal device has a playback speed corresponding to a constant travel speed when the vehicle travels a point that is a predetermined distance or more away from the caution point, or when the vehicle is running before or is stopped. A driving support method, wherein the driving support moving image is reproduced and displayed. In the driving support method according to any one of claims 1 to 5,
The center device selects the caution point based on a past travel history of each vehicle on which the in-vehicle terminal device is mounted. The driving support method according to claim 6,
The center device is a point where each vehicle equipped with the in-vehicle terminal device deviates from a preset travel route, and a point where each vehicle equipped with the in-vehicle terminal device traveled in the past without following traffic rules. At least one of the above is selected as the attention point. The driving support method according to claim 7,
The center device includes a point where the number or percentage of each vehicle mounted with the in-vehicle terminal device deviating from the travel route in the past is a predetermined threshold or more, and each vehicle mounted with the in-vehicle terminal device is a traffic rule in the past. A driving support method, wherein at least one of points where the number of times or the ratio of traveling without following a predetermined threshold is equal to or greater than a predetermined threshold is selected as the attention point. The driving support method according to any one of claims 6 to 8,
The center device distributes a driving support video corresponding to the caution point based on a driving video shot in a vehicle that has correctly traveled the caution point among the accumulated driving video. Support method. In the driving assistance method according to any one of claims 1 to 9,
The center device is configured to store the accumulated moving video based on at least one of a surrounding environment, a driver characteristic, and a vehicle characteristic at the time of shooting, and at least one of a surrounding environment, a driver characteristic, and a vehicle characteristic in a delivery destination vehicle. A driving support method, wherein a driving video to be distributed as the driving support video is selected. It is connected to multiple in-vehicle terminal devices via communication lines,
A receiving unit that receives, from the in-vehicle terminal device, a moving image that is captured while traveling around each vehicle equipped with the in-vehicle terminal device;
An accumulating unit for accumulating the traveling video received by the receiving unit;
A caution point selection unit that selects a point to be noted when driving a vehicle as a caution point;
A center device, comprising: a distribution unit that distributes a driving assistance video corresponding to the attention point to the in-vehicle terminal device based on the traveling video stored in the storage unit. The center device according to claim 11, wherein
The center device, wherein the attention point selection unit selects the attention point based on a past travel history of each vehicle on which the in-vehicle terminal device is mounted. The center device according to claim 11 or 12,
The delivery unit travels accumulated in the accumulation unit based on at least one of the ambient environment, driver characteristics, and vehicle characteristics at the time of shooting, and at least one of the ambient environment, driver characteristics, and vehicle characteristics of the delivery destination vehicle. A center apparatus that selects a traveling moving image to be distributed as the driving support moving image from among moving images. A center device, and a plurality of in-vehicle terminal devices connected to the center device via a communication line,
The center device is
A receiving unit that receives, from the in-vehicle terminal device, a moving image that is captured while traveling around each vehicle equipped with the in-vehicle terminal device;
An accumulating unit for accumulating the traveling video received by the receiving unit;
A caution point selection unit that selects a point to be noted when driving a vehicle as a caution point;
A distribution unit that distributes a driving assistance video corresponding to the attention point to the in-vehicle terminal device based on the driving video stored in the storage unit;
The in-vehicle terminal device is
A communication unit for transmitting the driving video to the center device and receiving a driving assistance video distributed from the center device;
And a display unit that reproduces and displays the driving support video received by the communication unit.

Images