JP4687302B2 - Travel history collection system and travel history collection method - Google Patents

Description

  The present invention relates to a travel history collection system and a travel history collection method.

  Conventionally, in a navigation device, for example, the current position of a vehicle, that is, the current position is detected by GPS (Global Positioning System), and the direction of the vehicle, that is, based on the turning angle of the vehicle detected by a gyro sensor, that is, The vehicle direction is detected, map data is read from the data recording unit, a map screen is formed on the display unit, the vehicle position indicating the current location, a map around the vehicle position, and the vehicle The direction is displayed. Therefore, the driver who is an operator can drive the vehicle according to the vehicle position displayed on the map screen, the map around the vehicle position, and the vehicle direction.

  When the driver inputs a destination and sets search conditions, a route search process is performed based on the search conditions, and a route from the starting point represented by the current location to the destination is searched according to the map data. Is done. Then, the searched route, that is, the searched route is displayed on the map screen together with the vehicle position, and guidance for the searched route, that is, route guidance is performed. Therefore, the driver can drive the vehicle along the displayed search route.

By the way, in the navigation apparatus, travel data representing the travel performance of the vehicle on the road on which the vehicle traveled is read, travel history data representing the travel history of the vehicle is created based on the travel data, and the data recording unit Is recorded and collected. The travel history data is sent to the information center as probe data as needed, and is provided from the information center to another vehicle, that is, another vehicle (see, for example, Patent Document 1).
JP 2001-209883 A

  However, in the conventional navigation device, matching processing is performed, and the current location is any road link based on the trajectory of the read current location and the shape, arrangement, etc. of each road link constituting the road around the current location. Although it is determined whether the vehicle is located above and the current location is specified, it may be recognized that the vehicle has traveled on a non-traveling road due to an error in the matching process.

  FIG. 2 is a first diagram showing a conventional travel data collection state, FIG. 3 is a first diagram illustrating an example of conventional travel data, and FIG. 4 is a second diagram illustrating a conventional travel data collection state. FIG. 5 is a second diagram showing an example of conventional travel data.

  In the figure, Li (i = 1, 2,...) Is a road link, C1 is an intersection, and Pt (t = 1, 2,...) Is travel data collected at a predetermined period, for example, 100 [ms]. It is a point. At the intersection C1, road links L1, L2, and L4 intersect.

  In the case of the example in FIG. 2, the vehicle is traveling on the road link L1 at points P1 to P5, the road link L2 at points P6 to P9, and the road link L3 at points P10 to P14. At Pt, the current location and the vehicle direction are detected, and the link number of the road link Li specified by the current location and the vehicle direction is read from the data recording unit and collected as travel data. The link number is assigned to each road link Li separately for uplink and downlink. Therefore, the traveling direction of the vehicle is determined separately for the forward direction and the reverse direction based on the link number, and is similarly collected as travel data.

  Then, as shown in FIG. 3, the link number and the traveling direction are recorded as travel data in the travel data file of the data recording unit in correspondence with each point Pt, and as travel history data in the travel history data file. It is recorded as it is.

  By the way, as described above, it may be recognized that the vehicle has traveled on a non-traveling road due to an error in the matching process.

  In the case of the example of FIG. 4, the vehicle actually travels along the road links L1 to L3 in the same manner as in the case of FIG. It is recognized that the vehicle has traveled on the road link L4.

  In this case, in the matching process, the vehicle travels on the road link L1 at the points P1 to P5, the road link L4 at the point P6, the road link L2 at the points P7 to P10, and the road link L3 at the points P11 to P15. Thus, at each point Pt, the current location and the vehicle direction are detected, and the link number of the road link Li specified by the current location and the vehicle direction is read from the data recording unit and collected as travel data. Is done. In the case of FIG. 4, the current location and the vehicle direction are detected at point P6, and the link number of the road link L4 specified by the current location and the vehicle direction is read from the data recording unit and collected as travel data.

  Then, as shown in FIG. 5, in correspondence with each point Pt, the link number and the traveling direction are recorded as travel data in the travel data file of the data recording unit, and as travel history data in the travel history data file. It is recorded as it is.

  In this case, the traveling data is collected for the road link L4 that is not continuous with the road links L1 to L3 in addition to the continuous road links L1 to L3, and it is recognized that the vehicle has traveled on a road that is not traveling. Therefore, incorrect travel history data is recorded, and the accuracy of the travel history data is lowered.

  It is an object of the present invention to provide a travel history collection system and a travel history collection method that can solve the problems of the conventional navigation device and increase the accuracy of travel history data.

  Therefore, in the travel history collection system of the present invention, a current location detection unit for detecting the current location, a road link determination processing means for determining whether or not the road link specified based on the current location is continuously connected, Travel determination processing means for determining whether or not the vehicle actually traveled on the discontinuous road link based on travel data acquired for the discontinuous road link when the road link is not continuously connected; And travel history data recording processing means for recording travel history data for the discontinuous road links when the vehicle actually travels on the discontinuous road links.

  According to the present invention, based on the travel data acquired for the discontinuous road link, it is determined whether the vehicle actually traveled the discontinuous road link, and the vehicle actually traveled the discontinuous road link. In this case, since the travel history data is recorded, there is no error in the matching processing, and even if it is recognized that the vehicle has traveled on a road that is not traveling, erroneous travel history data is not recorded. Therefore, the accuracy of the travel history data can be increased.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a navigation system according to the first embodiment of the present invention.

  In the figure, reference numeral 10 denotes an automatic transmission control unit as a power train control unit. The automatic transmission control unit 10 is a power train that performs a shift at a predetermined gear ratio, for example, a continuously variable transmission as an automatic transmission. (CVT), stepped transmission (automatic transmission), electric drive device, etc. are controlled.

  Reference numeral 14 is an information terminal, for example, a navigation device as an in-vehicle device mounted on a vehicle, 63 is a network, 51 is an information center as an information provider, and the automatic transmission control unit 10, the navigation device 14, the network 63, the information center 51 and the like constitute a navigation system.

  The navigation device 14 includes a GPS sensor 15 as a current location detection unit for detecting a current location, a data recording unit 16 as an information recording unit in which various information is recorded in addition to map data, and navigation based on the input information. A navigation processing unit 17 that performs various arithmetic processing such as processing, a direction sensor 18 that serves as a direction detection unit that detects the vehicle direction, and a first input for performing predetermined input when operated by a driver as an operator. An operation unit 34 as an input unit, various displays by an image displayed on a screen (not shown), a display unit 35 as a first output unit for notifying the driver, and a predetermined input by voice A voice input unit 36 as a second input unit, a voice output unit 3 as a second output unit for performing various displays by voice and notifying the driver , And a communication unit 38 as a transmission / reception unit functioning as a communication terminal. The navigation processing unit 17 includes a GPS sensor 15, a data recording unit 16, an orientation sensor 18, an operation unit 34, a display unit 35, a voice input unit 36, An audio output unit 37 and a communication unit 38 are connected.

  The navigation processing unit 17 is attached to the automatic transmission control unit 10, a predetermined position at the front end of the vehicle, and a front monitoring device 48 for monitoring the front of the vehicle, and a predetermined position at the rear end of the vehicle. The rear camera (rear monitoring camera) 49 as an imaging device that captures the rear of the vehicle and an accelerator as an engine load detection unit that detects the operation of the accelerator pedal by the driver based on the accelerator opening A sensor 42, a brake sensor 43 as a braking detection unit that detects the operation of the brake pedal by the driver by a brake depression amount, a vehicle speed sensor 44 as a vehicle speed detection unit that detects the vehicle speed S, and the like are connected. The accelerator sensor 42, the brake sensor 43, and the like constitute a vehicle operation information detection unit for detecting vehicle operation information by the driver.

  The GPS sensor 15 detects the current location on the earth by receiving radio waves generated by an artificial satellite, and also detects the time. In the present embodiment, the GPS sensor 15 is used as the current position detection unit, but a distance sensor, a steering sensor, an altimeter, etc. (not shown) are used alone or in combination instead of the GPS sensor 15. You can also Further, a gyro sensor, a geomagnetic sensor, or the like can be used as the direction sensor 18.

  The data recording unit 16 includes a map database including map data files, and map data is recorded in the map database. The map data includes intersection data relating to intersections, node data relating to nodes, road data relating to road links, driving lanes, search data processed for searching, facility data relating to facilities, and other features related to features. Contains data. The data recording unit 16 also records data for outputting predetermined information by the audio output unit 37.

  Further, the data recording unit 16 is formed with a statistical database composed of statistical data files, a traveling history database composed of traveling history data files, and the like. Statistical data as statistical information is stored in the statistical data file as the traveling history data file. Each of the travel history data as the travel history is recorded as performance data.

  The statistical data is a history of traffic information provided in the past, that is, history information representing a history, and a road traffic information center (not shown) such as a VICS (registered trademark: Vehicle Information and Communication System) center as an information provider. Traffic information provided in the past, etc., road traffic census information that is data representing traffic volume by road traffic census provided by the Ministry of Land, Infrastructure, Transport and Tourism, road timetable information provided by the Ministry of Land, Infrastructure, Transport and Tourism alone, or It is created by using in combination, processing as needed, and applying statistical processing. It is possible to add traffic jam prediction information for predicting traffic jams to the statistical data. In that case, in creating the statistical data, detailed conditions such as date and time, day of the week, weather, various events, seasons, facility information (presence / absence of large facilities such as department stores and supermarkets) are added to the history information.

  The data items of the statistical data include a link number for each road link, a direction flag indicating a traveling direction, an information type indicating a type of information, a congestion level at each predetermined timing, and when traveling on each road link. It consists of a link required time representing a required time for each predetermined timing, average data for each day of the link required time (for example, day average data), and the like.

  The travel history data represents a travel history of the vehicle, is created based on travel data representing the travel performance of the vehicle on the road on which the vehicle has traveled, and is recorded and collected in the data recording unit 16.

  The data items of the travel history data include a link required time at each predetermined timing when traveling on each road link, a degree of congestion at each predetermined timing when traveling on each road link, and the like. Note that travel history data can be added to the statistical data. Further, in the present embodiment, the congestion level is used as a congestion index that represents the degree of congestion, and is represented separately for congestion, congestion, and non-congestion.

  The travel history data is sent as probe data to the information center 51 as necessary, and is provided from the information center 51 to other vehicles, that is, other vehicles. In this case, of the traveling history data, the own vehicle history data is constituted by the traveling history data of the own vehicle, and the other vehicle history data is constituted by the traveling history data of the other vehicle.

  The data recording unit 16 includes a disk (not shown) such as a hard disk, a CD, a DVD, and an optical disk in order to record the various data, and also reads / writes for reading and writing various data. A head (not shown) such as a head is provided. A memory card or the like can be used for the data recording unit 16.

  In the present embodiment, the data recording unit 16 is provided with the map database, statistical database, travel history database, and the like. However, in the information center 51, the map database, statistical database, travel history, etc. A history database or the like can also be provided.

  The navigation processing unit 17 is a control device that performs overall control of the navigation device 14 and a CPU 31 as an arithmetic device, a RAM 32 that is used as a working memory when the CPU 31 performs various arithmetic processes, In addition to the above program, a ROM 33 in which various programs for searching for a route to the destination, route guidance and the like are recorded, and a flash memory (not shown) used for recording various data, programs and the like are provided. .

  In the present embodiment, various programs can be recorded in the ROM 33 and various data can be recorded in the data recording unit 16, but the programs, data, and the like can also be recorded on a disk or the like. In this case, the program, data, etc. can be read from a disk or the like and written to the flash memory. Therefore, the program, data, etc. can be updated by exchanging the disk or the like. Further, the control program, data, and the like of the automatic transmission control unit 10 can be recorded on the disk or the like. Further, the program, data, and the like can be received via the communication unit 38 and written into the flash memory of the navigation processing unit 17.

  The operation unit 34 is operated by the driver to correct the current location at the start of traveling, to input a departure point and a destination, to input a passing point, and to activate the communication unit 38. As the operation unit 34, a keyboard, a mouse, or the like disposed independently of the display unit 35 can be used. Further, as the operation unit 34, a predetermined input operation is performed by touching or clicking a screen operation unit such as various keys, switches, and buttons displayed as images on the screen formed on the display unit 35. It is possible to use a touch panel that can be used.

  A display is used as the display unit 35. Then, the vehicle direction is displayed on various screens formed on the display unit 35, the map, the searched route, guidance information along the searched route, traffic information, etc. are displayed, and the next intersection in the searched route. In addition to displaying the distance and the direction of travel at the next intersection, the screen operation unit, the operation unit 34, the voice input unit 36, etc., operation guidance, operation menu, key guidance, FM A multiplex broadcast program or the like can be displayed.

  The voice input unit 36 includes a microphone (not shown) and the like, and can input necessary information by voice. Further, the voice output unit 37 includes a voice synthesizer and a speaker (not shown), and the search route, guidance information, traffic information, and the like are output from the voice output unit 37, for example, as voice synthesized by the voice synthesizer. .

  The communication unit 38 transmits various information such as current traffic information and general information transmitted from the road traffic information center to radio wave beacons via radio wave beacon devices, optical beacon devices and the like arranged along the road. A beacon receiver for receiving as an optical beacon, an FM receiver for receiving as an FM multiplex broadcast via an FM broadcast station, and the like. The traffic information includes traffic jam information, regulation information, parking lot information, traffic accident information, service area congestion status information, and the like, and general information includes news, weather forecasts, and the like. Further, the beacon receiver and the FM receiver are unitized and arranged as a VICS receiver, but can be arranged separately.

  The traffic information includes an information type that indicates the type of information, a mesh number for specifying a mesh, a road link that connects two points (for example, intersections), and a link that indicates whether it is up / down. Number, including link information representing the content of information provided corresponding to the link number. For example, when the traffic information is traffic jam information, the link information is a distance from the start point of the road link to the head of the traffic jam Congestion head data representing traffic congestion degree, congestion section, traffic jam length representing the distance from the beginning of the traffic jam to the end of the traffic jam, link required time representing the time required to travel on the road link, and the like.

  And the communication part 38 can receive various information, such as traffic information and general information other than data, such as the said map data, statistical data, and driving history data, from the said information center 51 via the network 63. .

  For this purpose, the information center 51 includes a server 53, a communication unit 57 connected to the server 53, a database (DB) 58 as an information recording unit, and the like. A CPU 54, a RAM 55, a ROM 56, etc. are provided as devices. The database 58 records data similar to the various data recorded in the data recording unit 16, for example, the map data, statistical data, travel history data, and the like. Further, the information center 51 provides various information such as current traffic information and general information transmitted from the road traffic information center, and travel history data collected from a plurality of vehicles (own vehicle or other vehicles) in real time. can do.

  The navigation system, the navigation processing unit 17, the CPUs 31, 54, the server 53, and the like function as a computer singly or in combination of two or more, and perform arithmetic processing based on various programs, data, and the like. The data recording unit 16, RAMs 32 and 55, ROMs 33 and 56, database 58, flash memory, and the like constitute a recording medium. An MPU or the like can be used instead of the CPUs 31 and 54 as the arithmetic unit.

  Next, a basic operation of the navigation system having the above configuration will be described.

  First, when the operation unit 34 is operated by the driver and the navigation device 14 is activated, a navigation initialization processing unit (not shown) of the CPU 31 performs a navigation initialization process and detects the current location of the vehicle detected by the GPS sensor 15. The vehicle direction detected by the direction sensor 18 is read, and various data are initialized. Next, the matching processing means (not shown) of the CPU 31 performs matching processing, and based on the trajectory of the read current location and the shape, arrangement, etc. of each road link constituting the road around the current location, The current location is identified by determining whether it is located on the road link.

  Subsequently, a basic information acquisition processing unit (not shown) of the CPU 31 performs a basic information acquisition process and acquires the map data by reading it from the data recording unit 16 or receiving it from the information center 51 or the like via the communication unit 38. And get. When the map data is acquired from the information center 51 or the like, the basic information acquisition processing means writes the received map data in the flash memory.

  A display processing unit (not shown) of the CPU 31 performs display processing and forms various screens on the display unit 35. For example, the map display processing means of the display processing means performs a map display process, forms a map screen on the display unit 35, displays a surrounding map on the map screen, and sets the current position as the vehicle position and the direction of the vehicle. Is displayed as the vehicle direction.

  Accordingly, the driver can drive the vehicle according to the map, the vehicle position, and the vehicle direction.

  Further, when the driver operates the operation unit 34 to input a destination, a destination setting processing unit (not shown) of the CPU 31 performs a destination setting process to set the destination. Note that the departure place can be input and set as necessary. Moreover, a predetermined point can be registered in advance, and the registered point can be set as a destination. Subsequently, when the driver operates the operation unit 34 to input a search condition, a search condition setting processing unit (not shown) of the CPU 31 performs a search condition setting process to set the search condition.

  When the destination and the search condition are set in this way, the route search processing unit (not shown) of the CPU 31 performs the route search process, reads the current location, the destination, the search condition, and the like from the data recording unit 16. Based on the current location, the destination, and the search data, a route from the departure point to the destination represented by the current location is searched based on the search condition, and route data representing the searched route is output. At this time, the route with the smallest total link cost assigned to each road link is set as the searched route.

  When a plurality of lanes are formed on the road and a traveling lane is detected, the route search processing means searches for a search route for each lane. In this case, the route data includes the lane number of the traveling lane.

  Subsequently, a guidance processing means (not shown) of the CPU 31 performs guidance processing and provides route guidance. For this purpose, the route display processing means of the guidance processing means performs route display processing, reads the route data, and displays the searched route on the map screen according to the route data. When a search route for each lane is searched, route guidance for each lane is performed at a predetermined point, for example, a guidance intersection, and a travel lane for which route guidance is being performed is displayed in the enlarged intersection view. If necessary, the voice output processing means of the guidance processing means performs voice output processing, and outputs a search route by voice from the voice output unit 37 to provide route guidance.

  The information center 51 can perform a route search process. In that case, the CPU 31 transmits the current location, the destination, search conditions, and the like to the information center 51. When the information center 51 receives the current location, destination, search conditions, etc., the route search processing means (not shown) of the CPU 54 performs route search processing similar to that of the CPU 31 and reads the search data from the database 58 to obtain the current location, destination. Based on the location and the search data, a route from the departure point to the destination is searched under the search conditions, and route data representing the searched route is output. Subsequently, a transmission processing unit (not shown) of the CPU 54 performs transmission processing and transmits the route data to the navigation device 14. Therefore, in the navigation device 14, when the basic information acquisition processing means receives the route data from the information center 51, the guidance processing means performs route guidance as described above.

  And when a guidance intersection exists on the searched route, when the vehicle reaches a route guidance point in front of the guidance intersection by a predetermined distance (for example, X [m]), the intersection enlarged map display processing means of the guidance processing means Performs an enlarged intersection map display process, forms an enlarged intersection map as described above in a predetermined area of the map screen, provides route guidance by the enlarged intersection map, and displays the map around the guided intersection in the enlarged intersection map. When the route guidance for the lane unit is being performed, the travel lane or the like is displayed. Further, if necessary, the voice output processing means outputs a voice such as “This is X [m] to the left” from the voice output unit 37 and performs route guidance.

  By the way, as described above, in the navigation device 14, travel data representing the travel results of the vehicle on the road on which the vehicle traveled is read, travel history data is created based on the travel data, and the data recording unit 16 is recorded and collected.

  For this purpose, the travel history collection processing means (not shown) of the CPU 31 performs travel history collection processing, creates travel history data based on the travel data, and records it in the data recording unit 16.

  FIG. 6 is a main flowchart showing the operation of the travel history collection processing means in the first embodiment of the present invention.

  First, the initialization processing means of the traveling history collection processing means performs initialization processing, initializes each variable of traveling data, and sets zero (0) to a value n. Subsequently, the travel history recording processing means of the travel history collection processing means performs travel history recording processing, reads travel data for the road link L (n) on which the vehicle is currently traveling, and based on the travel data. To create and record travel history data.

  The traveling history collection processing means determines whether the accessory switch is turned off by the driver turning off the ignition switch. When the accessory switch is turned off, the driving history collection processing means ends the process.

Next, a flowchart will be described.
Step S1: Variables are initialized.
Step S2 A travel history recording process is performed.
Step S3: The value n is incremented.
Step S4: Determine whether the accessory switch has been turned off. If the accessory switch is turned off, the process ends. If not turned off (turned on), the process returns to step S2.

  Next, a subroutine for the travel history recording process in step S2 of FIG. 6 will be described.

  FIG. 7 is a diagram showing a subroutine of the travel history recording process in the first embodiment of the present invention, FIG. 8 is a diagram showing a collection state of travel data in the first embodiment of the present invention, and FIG. 9 is a diagram showing the present invention. The figure which shows the 1st example of the driving | running | working data in 1st Embodiment of this invention, FIG. 10 is the figure which shows the 2nd example of the driving | running | working data in the 1st Embodiment of this invention, FIG. It is a figure which shows the 3rd example of the driving | running | working data in 1 embodiment.

  In the figure, Li (i = 1, 2,...) Is a road link, C1 is an intersection, and Pt (t = 1, 2,...) Is travel data collected at a predetermined period, for example, 100 [ms]. It is a point. At the intersection C1, road links L1, L2, and L4 intersect.

  In this case, the vehicle travels on the road link L1 at points P1 to P5, the road link L4 at points P6 and P7, the road link L2 at points P8 to P11, and the road link L3 at points P12 to P16. Thus, at each point Pt, the current location and the vehicle direction are detected, and the link number of the road link Li specified by the current location and the vehicle direction is read from the data recording unit and collected as travel data. .

  For this purpose, first, the road link identification processing means of the travel history recording processing means performs road link identification processing, reads the current location and the vehicle direction, and reads road data from the data recording unit 16 to obtain the current location and the vehicle direction. Based on the road data, the road link on which the vehicle is traveling is specified.

  Next, the travel data acquisition processing means of the travel history recording processing means performs travel data acquisition processing, reads the link number of the identified road link from the data recording unit 16, and collects it as travel data. Further, as described above, the link number is assigned to each road link Li separately for uplink and downlink. Therefore, the travel data acquisition processing means determines the traveling direction of the vehicle based on the link number separately for the forward direction and the reverse direction, and similarly collects it as travel data. The travel data recording processing means of the travel history recording processing means performs a travel data recording process and records the collected travel data in the travel data file of the data recording unit 16.

Subsequently, the road link determination processing means of the travel history recording processing means performs a road link determination process to determine whether or not the vehicle has traveled the next road link in the travel direction of the vehicle, that is, the current travel Determine if the road links that have changed. When the road link on which the vehicle is currently traveling has changed, the road link determination processing means obtains the traveling data of the three consecutive links LA to LC to obtain the road link L that is currently traveling. Let (n) be LA, the road link L (n-1) that was traveling the previous time is LB, and the road link L (n-2) that was traveled the last time is LC. In the present embodiment, in the matching process, the vehicle travels in the order of the road links L1, L4, L2, and L3 as time passes. Therefore, when the vehicle is currently traveling on the road link L2,
LA = L2
LB = L4
LC = L1
become.

  The road link determination processing means determines whether or not the road links LA to LC on which the vehicle travels are continuously connected. When the road links LA to LC are continuously connected, the travel history data recording processing means of the travel history recording processing means performs a travel history data recording process, and for each point Pt, the road link LA to LC Corresponding LC link numbers and travel directions are recorded in the travel history data file as travel history data.

  Whether or not the road links LA to LC are connected continuously is the same as the end point of the road link LC and the start point of the road link LB, and the end point of the road link LB and the road link LA. The end point of the road link LC and the start point of the road link LB are the same, and the end point of the road link LB and the start point of the road link LA are the same. If they are the same, it is determined that they are continuously connected, and the end point of the road link LC and the start point of the road link LB are different, or the end point of the road link LB and the start point of the road link LA Are different from each other, it is determined that they are not continuously connected.

  When the road links LA to LC are not continuously connected, the road link determination processing unit determines that the road link LB has traveled discontinuous, and the travel history recording processing unit performs a traveling direction acquisition process. The means performs a traveling direction acquisition process and acquires each traveling direction at each point Pt corresponding to the road link LB by reading the traveling direction.

  Subsequently, the travel determination processing unit of the travel history recording processing unit performs a travel determination process, and determines whether the vehicle actually travels on the road link LB based on the travel data acquired for the road link LB. That is, the traveling determination processing means determines whether or not the vehicle has actually traveled on the road link LB depending on whether or not each traveling direction at each point Pt has both forward and reverse directions. If both directions are present, the travel determination processing means determines that the vehicle has actually traveled on the road link LB, and the travel history data recording processing means determines the link numbers of the road links LA to LC and the link numbers for each point Pt. Corresponding to the traveling direction, it is recorded in the travel history data file as travel history data. If both directions are not present, the travel determination processing means determines that the vehicle is not actually traveling on the road link LB, and the travel history data recording processing means does not record travel history data for the road link LB.

  In the present embodiment, the end point of the road link L1 and the start point of the road link L4 are the same, but the end point of the road link L4 and the start point of the road link L2 are different, so the road link L1, L4 and L2 are not continuous, and the traveling direction acquisition processing means reads the traveling directions at the points P6 and P7 corresponding to the road link L4.

  Then, the travel determination processing means determines whether or not each traveling direction at each of the points P6 and P7 has both a forward direction and a reverse direction, and determines whether or not the vehicle has actually traveled on the road link L4. In the case of the travel data shown in FIG. 9, the traveling direction at the point P6 is the forward direction, and the traveling direction at the point P7 is the reverse direction, so there are both directions. Therefore, the travel determination processing means determines that the vehicle has actually traveled on the road link L4. Then, the travel history data recording processing means determines that the vehicle has traveled back and forth on the road link L4, and associates the traveling directions in the road link L4 and the road link L4 for each point P6, P7, as travel history data. , Record in the driving history data file.

  Further, as shown in FIG. 10, when the traveling directions at points P6 and P7 are both forward, and as shown in FIG. 11, the traveling directions at points P6 and P7 are both reverse. Does not have both orientations. Therefore, the travel determination processing means determines that the vehicle is not actually traveling on the road link L4. And a driving history data recording process means does not record driving history data about each point P6 and P7.

  In this way, it is determined whether or not the road links LA to LC are continuously connected. When the road links LA to LC are not continuously connected, the traveling directions at the points Pt corresponding to the road link LB are determined. Determines whether the vehicle has actually traveled on the road link LB, and if there is both directions and the vehicle has actually traveled on the road link LB, The travel history data is recorded, and when neither of the directions is present and the vehicle is not actually traveling on the road link LB, the travel history data on the road link LB is not recorded. Even if it is recognized that the vehicle has traveled on a non-traveling road due to an error, erroneous travel history data is not recorded. Therefore, the accuracy of the travel history data can be increased.

Next, a flowchart will be described.
Step S2-1: Identify the road link and determine the direction of travel.
Step S2-2: Determine whether the road link has changed. If the road link has changed, the process returns to step S2-3. If the road link has not changed, the process returns.
Step S2-3: Road link L (n) is set to road link LA, road link L (n-1) is set to road link LB, and road link L (n-2) is set to road link LC.
Step S2-4: It is determined whether or not the road links LA to LC are continuously connected. If the road links LA to LC are continuously connected, the process proceeds to step S2-5. If the road links LA to LC are not continuously connected, the process proceeds to step S2-6.
Step S2-5: The link number and traveling direction are recorded as travel history data, and the process returns.
Step S2-6 A traveling direction acquisition process is performed.
Step S2-7: It is determined whether or not both directions are present. If both directions are present, the process proceeds to step S2-8, and if not, the process returns.
Step S2-8: The link number and traveling direction are recorded as travel history data, and the process returns.

  Next, a second embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by providing the same code | symbol, and the effect of the same embodiment is used about the effect of the invention by having the same structure. .

  FIG. 12 is a diagram showing a subroutine of travel history recording processing in the second embodiment of the present invention, FIG. 13 is a diagram showing subroutine of passing speed calculation processing in the second embodiment of the present invention, and FIG. The figure which shows the collection state of the driving | running | working data in the 2nd Embodiment of invention, FIG. 15 is a figure which shows the example of the driving | running | working data in the 2nd Embodiment of this invention.

  In this case, in the matching process, as in the first embodiment, as shown in FIG. 14, the vehicle points the road link L1 at the points P1 to P5, the road link L4 at the points P6 and P7, and the points. The road link L2 is traveled at P8 to P11 and the road link L3 is traveled at points P12 to P16. At each point Pt, the current location and the vehicle direction are detected, and the road link Li specified by the current location and the vehicle direction The link number is read from the data recording unit and collected as travel data.

  For this purpose, first, the road link identification processing means of the travel history recording processing means performs road link identification processing, reads the current location and the vehicle direction, and reads road data from the data recording unit 16 to obtain the current location and the vehicle direction. Based on the road data, the road link on which the vehicle is traveling is specified.

  Next, the travel data acquisition processing means of the travel history recording processing means performs a travel data acquisition process, reads the link number of the identified road link from the data recording unit 16, collects it as travel data, Based on this, the traveling direction of the vehicle is determined separately for the forward direction and the reverse direction, and is similarly collected as travel data. The travel data recording processing means of the travel history recording processing means performs a travel data recording process and records the collected travel data in the travel data file of the data recording unit 16.

Subsequently, the road link determination processing means of the travel history recording processing means performs a road link determination process to determine whether or not the road link currently being traveled has changed. When the road link on which the vehicle is currently traveling has changed, the road link determination processing means obtains the traveling data of the three consecutive links LA to LC to obtain the road link L that is currently traveling. Let (n) be LA, the road link L (n-1) that was traveling the previous time is LB, and the road link L (n-2) that was traveled the last time is LC. In the present embodiment, in the matching process, the vehicle travels in the order of the road links L1, L4, L2, and L3 as time passes. Therefore, when the vehicle is currently traveling on the road link L2,
LA = L2
LB = L4
LC = L1
become.

Subsequently, the passing speed calculation processing means of the travel history recording processing means performs a passing speed calculation process to calculate the passing speed Vi of the road link LB. For this purpose, the passage speed calculation processing means, for example, the time when the vehicle reaches the end point of the road link LC (start point of the road link LB) when the vehicle enters the road link LA from the clock built in the CPU 31. te (i-2) and the time ts (i) at which the vehicle reaches the start point of the road link LA (end point of the road link LB) are read, and the passing time τi when the vehicle passes the road link LB
τi = ts (i) −te (i−2)
Is calculated.

The passage speed calculation processing means reads the link length εi of the road link LB in the road data, and passes the passage speed Vi.
Vi = εi / τi
Is calculated.

  Next, the travel data recording processing means records the passing speed Vi as travel data in the travel data file of the data recording unit 16.

  Subsequently, the travel determination processing unit of the travel history recording processing unit performs a travel determination process, and determines whether the vehicle actually travels on the road link LB based on the travel data acquired for the road link LB. In other words, the travel determination processing means determines whether or not the vehicle has actually traveled on the road link LB depending on whether or not the passing speed Vi is higher than the threshold value Vth (100 km / h in the present embodiment). . When the passing speed Vi is equal to or less than the threshold value Vth, the travel determination processing unit determines that the vehicle has actually traveled the road link LB, and the travel history data recording processing unit performs the road links LA to LC for each point Pt. Are recorded in the travel history data file as travel history data. When the passing speed Vi is higher than the threshold value Vth, the travel determination processing unit determines that the vehicle is not actually traveling on the road link LB, and the travel history data recording processing unit records travel history data for the road link LB. do not do.

  When the vehicle actually travels on the road link LB, the timings at which the current location and the vehicle direction are detected at the points P6 and P7 are sufficiently different, the passing time τi is sufficiently long, and the passing speed Vi is It takes a value close to the actual vehicle speed and never exceeds the threshold value Vth. However, when the vehicle is not actually traveling on the road link LB, the timings at which the current position and the vehicle direction are detected at the points P6 and P7 are substantially the same, the passing time τi becomes extremely short, and the passing speed Vi Takes an extremely higher value than the actual vehicle speed, and is higher than the threshold value Vth.

  In the present embodiment, the end point of the road link L1 and the start point of the road link L4 are the same, but the end point of the road link L4 and the start point of the road link L2 are different, so the road link L1, L4 and L2 are not continuous, and the passing speed calculation processing means calculates a passing speed Vi when passing through the road link L4.

  The travel determination processing means determines whether or not the vehicle has actually traveled on the road link L4 depending on whether or not the passing speed Vi is higher than the threshold value Vth. The travel data point P6 shown in FIG. Regardless of the direction of travel in P7, it can be determined that the travel data of points P6 and P7 has been acquired due to an error in the matching process.

Next, the flowchart of FIG. 12 will be described.
Step S2-11: Identify a road link and determine the direction of travel.
Step S2-12: It is determined whether or not the road link has changed. If the road link has changed, the process returns to step S2-13. If the road link has not changed, the process returns.
Step S2-13 Passing speed calculation processing is performed.
Step S2-15: It is determined whether or not the passing speed Vi is higher than the threshold value Vth. If the passing speed Vi is higher than the threshold value Vth, the process returns. If the passing speed Vi is equal to or lower than the threshold value Vth, the process proceeds to step S2-16.
Step S2-16 The link number and the traveling direction are recorded as travel history data, and the process returns.

Next, the flowchart of FIG. 13 will be described.
Step S2-14-1: Calculate the passage time τi of the road link LB.
Step S2-14-2: Link length εi is acquired.
Step S2-14-3: The passing speed Vi is calculated and the process returns.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a figure which shows the navigation system in the 1st Embodiment of this invention. It is a 1st figure which shows the collection state of the conventional driving | running | working data. It is a 1st figure which shows the example of the conventional driving | running | working data. It is a 2nd figure which shows the collection state of the conventional driving | running | working data. It is a 2nd figure which shows the example of the conventional driving | running | working data. It is a main flowchart which shows operation | movement of the driving history collection process means in the 1st Embodiment of this invention. It is a figure which shows the subroutine of the travel history recording process in the 1st Embodiment of this invention. It is a figure which shows the collection state of the travel data in the 1st Embodiment of this invention. It is a figure which shows the 1st example of the driving | running | working data in the 1st Embodiment of this invention. It is a figure which shows the 2nd example of the driving | running | working data in the 1st Embodiment of this invention. It is a figure which shows the 3rd example of the driving | running | working data in the 1st Embodiment of this invention. It is a figure which shows the subroutine of the travel history recording process in the 2nd Embodiment of this invention. It is a figure which shows the subroutine of the passage speed calculation process in the 2nd Embodiment of this invention. It is a figure which shows the collection state of the travel data in the 2nd Embodiment of this invention. It is a figure which shows the example of the driving | running | working data in the 2nd Embodiment of this invention.

Explanation of symbols

10 Automatic transmission control unit 14 Navigation device 15 GPS sensor 15
31 CPU
51 Information Center 63 Network

Claims (4)

  When the current location detection unit for detecting the current location, the road link determination processing means for determining whether the road link specified based on the current location is continuously connected, and the road link are not continuously connected, Based on the travel data acquired for the discontinuous road link, a travel determination processing means for determining whether the vehicle actually traveled the discontinuous road link, and the vehicle actually traveled the discontinuous road link. A travel history data recording processing means for recording travel history data for discontinuous road links.   2. The travel history according to claim 1, wherein the travel data is a direction in a traveling direction, and the travel determination processing unit determines whether the vehicle has actually traveled a discontinuous road link based on the direction in the travel direction. Collection system.   The travel history collection according to claim 1, wherein the travel data is a road link passing speed, and the travel determination processing unit determines whether the vehicle has actually traveled a discontinuous road link based on the passing speed. system.   Determine if the road links identified based on your current location are connected continuously, and if the road links are not connected continuously, based on the driving data obtained for the discontinuous road links, Judgment whether the vehicle actually traveled on the discontinuous road link, and when the vehicle actually traveled on the discontinuous road link, the travel history data about the discontinuous road link is recorded. Running history collection method to do.

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