JP2006138742A - Information acquisition system, and program of information acquisition method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce cost for information acquisition and to prevent useless communications. <P>SOLUTION: This information acquisition system comprises a present location detector for detecting the present location, a travel information creating means for creating travel information accompanying a travel of a vehicle, a positional information transmitting means for transmitting the present location as the positional information to an information center 51, an another-vehicle travel record acquirement requesting means for transmitting an another-vehicle travel record acquirement request to the information center 51, and a travel information acquisition means for acquiring travel information of the vehicle in a predetermined area set based on the positional information based on the another-vehicle travel record acquirement request. Only the travel information of the vehicle in the predetermined area set is collected based on the positional information, so that the another-vehicle travel record can be acquired in real time. Communication cost for transmitting the travel information to the information center 51 can be reduced, and cost for information acquisition can be reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information collection system and an information collection method program.

  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 own vehicle position displayed on the map screen, the map around the own vehicle position, and the own vehicle direction.

  Further, when the driver inputs a destination and sets search conditions, a route from the departure point represented by the current location to the destination is searched according to the map data based on the search conditions. While the vehicle is running, the searched route, that is, the searched route is displayed along with the vehicle position on the map screen. Therefore, the driver can drive the vehicle along the displayed search route.

By the way, in the navigation device, a travel route that represents a route during which the vehicle is traveling, travel time information that represents a time that the vehicle has passed for each travel point, and the like are sent to the management center. Collect travel time information, etc., perform statistical processing on the travel route, travel time information, etc., calculate the congestion status of the road, the required time from the departure place to the destination, etc., and the calculated congestion of the road The situation, required time, and the like are provided to other vehicles, that is, other vehicles (see, for example, Patent Document 1).
JP 2002-150467 A

  However, in the conventional navigation device, the travel route, travel time information, and the like are collected regardless of whether the driver uses the provided road congestion, required time, or the like in another vehicle. Therefore, the communication cost for sending each travel route, travel time information, etc. to the management center is high, and not only the cost for collecting information is increased, but also communication is performed wastefully.

  The present invention provides a program for an information collection system and an information collection method that solves the problems of the conventional navigation device, can reduce the cost for collecting information, and does not wastefully communicate. The purpose is to do.

  For this purpose, in the information collection system of the present invention, a current position detection unit for detecting the current position, a travel information creation processing means for creating travel information accompanying travel of the vehicle, and position information for transmitting the current position to the information center as position information A transmission processing unit, another vehicle traveling result acquisition request processing unit that transmits another vehicle traveling result acquisition request to the information center, and a predetermined area set based on the position information based on the other vehicle traveling result acquisition request Driving information collection processing means for collecting driving information of the vehicle inside the vehicle.

  According to the present invention, since only the traveling information of the vehicle in the predetermined area set based on the position information is collected, the traveling results of other vehicles can be acquired in real time.

  Therefore, the communication cost for sending the travel information to the information center can be reduced, the cost for collecting information can be reduced, and unnecessary communication can be prevented. .

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

  FIG. 1 is a block diagram showing a navigation system according to an embodiment of the present invention, FIG. 2 is a flowchart showing an operation of the navigation device according to the embodiment of the present invention, and FIG. 3 is a conceptual diagram of a designated area in the embodiment of the present invention. It is.

  In FIG. 1, reference numeral 14 denotes an information terminal, for example, a navigation device as an in-vehicle device mounted on a vehicle. A navigation process that functions as a computer based on the data recording unit 16 as an information recording unit in which the above information is recorded, various programs, data, and the like, and performs various arithmetic processes such as a navigation process based on the input information Unit 17, direction sensor 18 serving as a direction detection unit for detecting the vehicle direction, operation unit 34 serving as a first input unit for performing predetermined input when operated by a driver as an operator, a screen (not shown) A display unit 35 as a first output unit for performing various displays according to the image displayed on the vehicle and notifying the driver. A voice input unit 36 as a second input unit for performing predetermined input by voice, a voice output unit 37 as a second output unit for performing various displays by voice and notifying the driver, a communication terminal The navigation processing unit 17 is connected with an operation unit 34, a display unit 35, a voice input unit 36, a voice output unit 37, and a communication unit 38. The navigation processor 17 is also connected with a vehicle speed sensor 41 as a vehicle speed detector.

  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) may be used alone or in combination instead of the GPS sensor 15. 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 data recording unit 16 also records data for outputting predetermined information by the audio output unit 37. The map data includes intersection data related to intersections, node data related to nodes, road data related to road links, search data processed for searching, facility data related to facilities, and the like.

  The navigation processing unit 17 includes a CPU 31 as a control device that controls the entire navigation device 14, a RAM 32 as a first recording medium used as a working memory when the CPU 31 performs various arithmetic processes, and a control device. In addition to the program, the ROM 33 as a second recording medium on which various programs for searching for a route to the destination, route guidance, etc. are recorded, various data, programs and the like used for recording 3 is provided with a flash memory (not shown) as a recording medium. Note that an MPU or the like may be used as the control device instead of the CPU 31.

  The data recording unit 16 includes a disk (not shown) such as a hard disk, a CD, a DVD, and an optical disk as a fourth recording medium for recording the various data, and reads various data. A head (not shown) such as a read / write head for writing is provided. Note that a memory card (not shown) or the like can be used as the fifth recording medium for the data recording unit 16.

  By the way, various programs can be recorded in the ROM 33 and various data can be recorded in the data recording unit 16, but programs, data, and the like can also be recorded on a disk. In this case, the program, data, etc. can be read from the disk and written to the flash memory. Therefore, the program, data, etc. can be updated by exchanging the disk. Further, when an automatic transmission control device is mounted to control an automatic transmission (not shown) mounted on the vehicle, the control program, data, etc. for the automatic transmission control device are also stored in the disk. Can be recorded. Further, the program, data, etc. can be received via the communication unit 38 and written to the flash memory.

  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. It is possible to use a keyboard, a mouse, etc. that are arranged independently of the display unit 35. Further, as the operation unit 34, a predetermined input operation is performed by touching or clicking an image operation unit such as various keys, switches, and buttons displayed as images on the screen formed in the display unit 35. It is possible to use a touch panel that can be used.

  A display can be used as the display unit 35. Then, on various screens formed on the display unit 35, the vehicle position indicating the current location, a map, a searched route, guidance information along the searched route, traffic information, etc. are displayed, or until the next intersection in the searched route. In addition to displaying the distance and the direction of travel at the next intersection, the operation guidance, operation menu, and key guidance of the image operation unit, operation unit 34, voice input unit 36, etc. can be displayed. 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 is arranged along the road with various types of information transmitted from a road traffic information center (not shown) such as a VICS (registered trademark) vehicle center as a first information provider. A beacon receiver for receiving as a radio beacon, an optical beacon or the like via a radio beacon device or an optical beacon device, an FM receiver for receiving as an FM multiplex broadcast via an FM broadcast station, or the like. And, the beacon receiver receives traffic information such as traffic jam information, regulation information, parking lot information, traffic accident information, service area congestion status information, etc. In addition to the traffic information, news, You can receive weather forecasts. The beacon receiver and the FM receiver are unitized and arranged as a VICS receiver, but can be arranged separately. The traffic jam information includes a distance from the head to the tail of the traffic jam, a traffic jam level for each road link constituting each road, a link required time which is a required time for each road link, and the like.

  The communication unit 38 can also receive various information such as traffic information, news, and weather forecasts from the information center 51 as the second information provider. For this purpose, the communication unit 38 and the information center 51 are connected via a network 43.

  The navigation device 14, the road traffic information center, the information center 51, the network 43 and the like constitute a navigation system, and various types of information are transmitted and received between the communication unit 38 and the communication unit 57 of the information center 51.

  The network 43 may be a LAN (Local Area Network), a WAN (Wide Area Network), a communication line network such as the Internet, or the like.

  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. The server 53 includes a CPU 54, a RAM 55, an arithmetic device and a control device, A ROM 56 is provided, and functions as a computer based on predetermined programs, data, and the like. In addition, the same data as various data recorded in the data recording unit 16 can be recorded in the database 58. The server 53 and the navigation processing unit 17 can also constitute a computer. Further, an MPU or the like can be used instead of the CPU 54.

  By the way, in this embodiment, in addition to the map database, the data recording unit 16 includes a statistical database composed of statistical data files, a travel history database composed of travel history data files, and a general information database composed of general information data files. Etc., statistical data as statistical information is recorded in the statistical data file, traveling history data as traveling performance information is recorded in the traveling history data file, and general data as general information is recorded in the general information data file. .

  The statistical data represents a history of traffic information such as traffic jam information provided in the past, traffic information provided by the road traffic information center, etc., data representing traffic volume by road traffic census provided by the Ministry of Land, Infrastructure, Transport and Tourism (Hereinafter referred to as “road traffic census information”), which is provided by the Ministry of Land, Infrastructure, Transport and Tourism and uses road timetable information composed of data representing the relationship between the time and the degree of congestion, etc. alone or in combination, It is created by performing statistical processing on road traffic census information, road timetable information, and the like.

  The data items of the statistical data include the route on which the vehicle has traveled in the past, that is, the link number data (ID) for each road link Li (i = 1, 2,..., N) constituting each travel route, the travel direction. Direction flag, information type indicating traffic information provided by the road traffic information center or the like, or road traffic census information, every predetermined timing t, in this embodiment, 15 [minutes] Is a traffic jam degree KJi (t) (i = 1, 2,..., N) as a traffic jam index representing the degree of traffic jam every time elapses. In the present embodiment, the degree of traffic congestion KJi (t) is represented by traffic congestion, congestion, and non-congestion.

  The travel history data is data representing travel performance on the travel route of the vehicle, i.e., probe data, and is travel history data representing travel performance on the travel route of the vehicle, i.e., travel history of the vehicle. It consists of travel history data and travel records on the travel route of other vehicles, that is, other vehicle travel history data that is travel history data representing the travel results of other vehicles.

  The data item of the travel history data is a link required time STi (t) (i = representing a required time every 15 [minutes] in the present embodiment when traveling on each road link Li. 1, 2,..., N), every time the road link Li travels, at this predetermined timing t, in this embodiment, the degree of traffic congestion SJi (t) (i = 1, 2, ..., N). The link required time STi (t) is calculated based on a plurality of past driving performances.

  In addition to the date and time, day of the week, season, weather, etc., the general data includes factors such as information on various events or facilities (presence / absence of large facilities such as stations, department stores, supermarkets, etc.). This is general information that is, that is, traffic jamming factor information.

  By the way, in the present embodiment, the map database, statistical database, travel history database, general database, etc. are formed in the data recording unit 16, and the map data, statistical data, travel history data, general data, etc. are recorded. Of these, the map data and statistical data are recorded in advance on a disk set in the data recording unit 16. On the other hand, the own vehicle traveling history data in the traveling history data is recorded in the data recording unit 16 based on the traveling performance of the vehicle. For this purpose, the own vehicle travel performance collection processing means (not shown) of the CPU 31 performs the own vehicle travel performance collection processing, and as the vehicle travels, the link required time STi (t), the congestion degree SJi (t), etc. It is calculated as the vehicle running record and recorded in the data recording unit 16. Further, other vehicle travel history data in the travel history data is transmitted from the information center 51, received via the communication unit 38, and recorded in the data recording unit 16. For this purpose, the other vehicle travel performance collection processing means (not shown) of the CPU 31 performs other vehicle travel performance collection processing, and the communication unit 38 sets the link required time STi (t), the congestion degree SJi (t), etc. as other vehicle travel performance. The data is received and recorded in the data recording unit 16. Further, the general data is transmitted from the information center 51, received via the communication unit 38, and recorded in the data recording unit 16. For this purpose, general information acquisition processing means (not shown) of the CPU 31 performs general information acquisition processing, receives general data by the communication unit 38, and records it in the data recording unit 16. Information on various events or facilities in the general data can be recorded in the data recording unit 16 in advance.

  In the present embodiment, the statistical data, the travel history data, and the general data are created separately and are recorded in the statistical database, the travel history database, and the general database. In other embodiments, The statistical data can be used as statistical data by performing statistical processing using a combination of the statistical data and at least one of travel history data and general data.

  In yet another embodiment, the map data and statistical data are also transmitted from the information center 51, received via the communication unit 38, and recorded in the data recording unit 16. For this purpose, a map information collection processing unit (not shown) of the CPU 31 performs map information collection processing, receives map data through the communication unit 38, and records it in the data recording unit 16. Further, statistical information collection processing means (not shown) of the CPU 31 performs statistical information collection processing, receives statistical data by the communication unit 38, and records it in the data recording unit 16. In still another embodiment, general data can be transmitted from the road traffic information center.

  In the present embodiment, the received other vehicle travel history data, general data, and the like are recorded in the data recording unit 16, but in other embodiments, the navigation processing unit 17 Can be recorded in flash memory.

  By the way, the navigation device 14 can directly receive the current traffic information from the road traffic information center via the communication unit 38. For this purpose, a traffic information acquisition processing unit (not shown) of the CPU 31 performs a traffic information acquisition process, and receives and acquires the current traffic information by the communication unit 38.

  The current traffic information received from the road traffic information center specifies information type data indicating the type of information, secondary mesh X and Y data for specifying a secondary mesh as a mesh, road link Li, and Link number data representing uplink / downlink, and link information representing the content of information provided in association with the link number data. The link information is, for example, from the start point of the road link Li Traffic jam heading data representing the distance to the traffic jam, traffic jam degree data representing the traffic jam degree VJi (i = 1, 2,..., N), traffic jams representing the traffic jam section by the traffic jam length (distance) from the head of the traffic jam to the end of the traffic jam. It consists of long data. The degree of traffic congestion VJi is used as a traffic congestion index indicating the degree of traffic congestion, and is expressed separately for traffic congestion, congestion, and non-congestion. In the present embodiment, the current traffic information transmitted from the road traffic information center is received, but the current traffic information transmitted from the information center 51 can be received. In this case, the information center 51 receives the current traffic information transmitted from the road traffic information center and sends it to the navigation device 14 as it is or after performing statistical processing.

  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 navigation initialization processing, and the current location detected by the GPS sensor 15 and The vehicle direction detected by the direction sensor 18 is read, and various data are initialized. Note that the matching processing means (not shown) of the CPU 31 performs matching processing, and the current location is on any road link based on the trajectory of the read current location and the shape and arrangement of each road link constituting the surrounding road. The current location is specified by determining whether the current location is located.

  Subsequently, an information acquisition processing unit (not shown) of the CPU 31 performs an information acquisition process, and reads and acquires the map data from the data recording unit 16.

  The display processing means (not shown) of the CPU 31 performs display processing, forms a map screen on the display unit 35, and displays the vehicle position, a map around the vehicle position, and the vehicle direction on the map screen. . Therefore, the driver can drive the vehicle according to the displayed vehicle position, the map around 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 input as a destination.

  When the destination is set, the route search processing unit (not shown) of the CPU 31 performs route search processing, reads the current location, the destination, etc., and is represented by the current location based on the current location, the destination, and the map data. The route from the starting point to the destination is searched. In this case, a route can be searched based on traffic information such as statistical data and travel history data based on the current traffic information in addition to the destination and map data, if necessary. Of the roads represented by the road data constituting the map data, roads other than the narrow streets are the roads that are subject to route search and route guidance.

  The route guidance processing means (not shown) of the CPU 31 performs route guidance processing and provides route guidance to the driver according to the searched route. For this purpose, the route display processing means of the route guidance processing means performs route display processing, reads the route data constituting the searched route, and displays the searched route on the map screen according to the route data.

  If necessary, the voice output processing means of the route guidance processing means performs voice output processing and outputs the searched route by voice from the voice output unit 37 to provide route guidance.

  Incidentally, as described above, the navigation device 14 receives the current traffic information from the road traffic information center via the communication unit 38, and the traffic information acquisition processing means receives the current traffic information. Can be obtained.

  As described above, a statistical database and a travel history database are formed in the data recording unit 16, and the traffic congestion degree KJi (t) and the like are recorded as statistical data in the statistical data file constituting the statistical database. In the travel history data file constituting the history database, link required time STi (t), traffic congestion degree SJi (t), and the like are recorded as travel history data. Therefore, the traffic information acquisition processing means acquires statistical data and travel history data by reading them from the data recording unit 16.

  In this way, the traffic information report acquisition processing means can acquire a plurality of types of traffic information including current traffic information, statistical data, and travel history data. Therefore, the traffic information display processing means (not shown) of the CPU 31 performs traffic information display processing. For example, the traffic level VJi and the like for the acquired current traffic information, the traffic level SJi (t) and the like for the travel history data, Congestion degree KJi (t) is selected as statistical information for each statistical data, and a traffic congestion arrow is created as a traffic condition index indicating the traffic congestion status based on each traffic congestion information. The traffic congestion arrow is displayed on the road on the map screen. It is trying to display along.

  Therefore, the driver can know a traffic jam situation on a route on which the vehicle is to travel, a searched route, and the like. Note that the color of the congestion arrow is red, orange, or blue depending on the congestion degree SJi (t), KJi (t), or VJi. It is orange in some cases and blue in non-traffic. Also, the congestion arrow pattern can be displayed differently according to the congestion degree SJi (t), KJi (t), VJi, etc., for example, when the pattern is a solid line in the case of a congestion, and is congested The pattern is broken.

  In addition, while the vehicle is traveling, the own vehicle traveling performance collection processing means indicates the required traveling time STi (t), the degree of traffic congestion SJi (t), etc. as the vehicle travels. And is recorded in the data recording unit 16.

  By the way, the navigation system having the above configuration can be used as an information collecting system. In that case, for the vehicle selected in advance, for example, for the road on which the vehicle is traveling, the coordinates and the vehicle speed are read every time unit time, in this embodiment, 1 [second] elapses. Can be transmitted to the information center 51 as travel information which is information associated with the travel of the vehicle. Then, the information center 51 collects traveling information, performs statistical processing on the collected traveling information, calculates the link required time STi (t), the congestion degree SJi (t), and the calculated link The required time STi (t), the degree of traffic congestion SJi (t), etc. are provided to each vehicle as the other vehicle traveling performance.

  However, since the other vehicle traveling results are collected regardless of whether the driver uses the provided other vehicle traveling results or not, the communication cost for sending the traveling information to the information center 51 is collected. This increases not only the cost for collecting information but also wasteful communication.

  Therefore, only when a predetermined vehicle requests acquisition of other vehicle travel history data, a vehicle in a predetermined area where the predetermined vehicle is traveling transmits and provides travel information to the information center 51. It has become.

  In FIG. 3, g is a vehicle that requests acquisition of other vehicle travel history data among the vehicles, that is, another vehicle travel performance acquisition request vehicle, and hi (i = 1, 2,...) Is another vehicle. In this case, among the vehicles hi, vehicles in the area AR1 in a predetermined range around the other vehicle traveling performance acquisition requesting vehicle g transmit traveling information to the information center 51 and provide it. Driving information providing vehicle hm (m = 1 to 4). In this case, for convenience of explanation, it is assumed that the other vehicle travel record acquisition request vehicle g and each vehicle hi have a function of transmitting travel information to the information center 51.

  First, in the other vehicle travel record acquisition request vehicle g and each vehicle hi, the travel information creation processing means of the CPU 31 performs travel information creation processing and reads the coordinates and vehicle speed every time 1 [second] elapses. The vehicle speed is generated as vehicle travel information and recorded in the RAM 32.

  In the present embodiment, the coordinates and vehicle speed each time 1 [second] elapses are used as vehicle travel information, but in other embodiments, the travel information creation processing means While reading the coordinates of a predetermined node on each road link, the time required to travel between the predetermined nodes (between each node or between several nodes), that is, the time required for the node Reading, coordinates and node required time as travel information, actual link time required to actually travel on road link, road link number and actual link time required as travel information, and passing through road link The vehicle speed during this period can be read, the average vehicle speed on the road link can be calculated, and the road link number and the average vehicle speed can be used as travel information.

  Further, in the other vehicle running record acquisition request vehicle g and each vehicle hi, a position information transmission processing unit (not shown) of the CPU 31 performs a position information transmission process, and unit time, in this embodiment, 1 [second] is set. Each time the current location is detected, the current location detected by the GPS sensor 15 is read, and the coordinates of the current location are transmitted to the information center 51 as location information and as the vehicle location.

  In the information center 51, a position information recording processing unit (not shown) of the CPU 54 performs position information recording processing, and when receiving the vehicle position from each vehicle hi, records the vehicle position in the database 58 as position information. .

  On the other hand, in the navigation device 14 in the other vehicle travel record acquisition request vehicle g, when the driver performs a predetermined operation in the operation unit 34 in order to use the other vehicle history data, the CPU 31 acquires another vehicle travel record (not shown). The request processing means performs other vehicle travel performance acquisition request processing, creates another vehicle travel performance acquisition request, and transmits it to the information center 51.

  When the information center 51 receives the other vehicle travel record acquisition request, a travel information collection processing unit (not shown) of the CPU 54 performs a travel information collection process, and each vehicle hi based on the other vehicle travel record acquisition request. The traveling information of the traveling information providing vehicle hm is collected. For this purpose, the area setting processing means of the travel information collection processing means performs area setting processing, sets the area AR1 based on the current location of the other vehicle travel performance acquisition request vehicle g, and the vehicle determination of the travel information collection processing means. The processing means performs vehicle determination processing, reads position information of each vehicle hi from the database 58, and each vehicle hi travels in the area AR1 based on the position information and coordinates that specify the area AR1. If a predetermined vehicle among the vehicles hi is traveling in the area AR1, the vehicle traveling in the area AR1 is specified as the travel information providing vehicle hm. Subsequently, the travel information transmission request processing means of the travel information collection processing means performs a travel information transmission request process and transmits a travel information transmission request to the travel information providing vehicle hm.

  In each travel information providing vehicle hm, when the CPU 31 receives a travel information transmission request, a travel information transmission processing unit (not shown) of the CPU 31 performs a travel information transmission process, reads the travel information from the RAM 32, and transmits it to the information center 51. To do. In the present embodiment, the travel information is recorded and read out from the RAM 32, but can be performed from the data recording unit 16.

  In the information center 51, the travel information acquisition processing means of the travel information collection processing means performs travel information acquisition processing, acquires travel information traveled from each travel information providing vehicle hm, and records it in the database 58.

  Subsequently, in the information center 51, statistical processing means (not shown) of the CPU 54 performs statistical processing, performs statistical processing on the received travel information, and calculates the link required time STi (t) and the congestion degree SJi (t). Etc., and the calculated link required time STi (t), congestion degree SJi (t), etc. are recorded in the database 58 as other vehicle travel history data. The other vehicle travel history data provision processing means (not shown) of the CPU 54 performs other vehicle travel history data provision processing, reads the other vehicle travel history data from the database 58, and transmits it to the other vehicle travel performance acquisition requesting vehicle g.

  Then, in the other vehicle travel record acquisition request vehicle g, the other vehicle travel history data recording processing unit (not shown) of the CPU 31 performs other vehicle travel history data recording processing, acquires other vehicle travel history data, and travel history data file. To record.

  As described above, in the present embodiment, when the other vehicle travel performance acquisition requesting vehicle g requests acquisition of other vehicle travel history data, the other vehicle travel performance acquisition requesting vehicle g is in the predetermined area AR1 in which the vehicle is traveling. Since each travel information providing vehicle hm transmits and provides travel information to the information center 51, the other vehicle travel performance acquisition requesting vehicle g can acquire other vehicle travel history data in real time. .

  That is, since the driving information is collected only when the driver uses other vehicle traveling history data, the communication cost for sending the traveling information to the information center 51 can be reduced, and the information collecting Therefore, it is possible not only to reduce the cost for the communication, but also to prevent unnecessary communication from being performed.

  Next, a flowchart will be described.

The case of the travel information providing vehicle hm will be described.
Step S1 The travel information is created.
Step S2 The own vehicle position is transmitted to the information center 51, and the process returns to Step S1 and proceeds to Step S3.
Step S3 The vehicle position information is recorded.

The other vehicle travel record acquisition request vehicle g will be described.
Step T1 A request for acquiring other vehicle traveling results is transmitted.
Step T2 A travel information transmission request is transmitted to the travel information providing vehicle hm in the area AR1, and the process proceeds to Steps T3 and T4.
Step T3 The travel information is transmitted to the information center 51.
Step T4 Travel information is acquired.
Step T5 Statistical processing is performed.
Step T6 The other vehicle travel record acquisition request vehicle g transmits other vehicle travel history data.
Step T7 The other vehicle travel history data is acquired and the process is terminated.

  In the present embodiment, the area AR1 is set to have a rectangular shape. However, in other embodiments, the area has a radius centered on the other vehicle running record acquisition request vehicle. It can be set to have a circular shape so as to fall within a predetermined range, or can be set along the search path.

  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 block diagram which shows the navigation system in embodiment of this invention. It is a flowchart which shows operation | movement of the navigation apparatus in embodiment of this invention. It is a conceptual diagram of the designation | designated area in embodiment of this invention.

Explanation of symbols

14 Navigation device 15 GPS sensor 17 Navigation processing unit 31, 54 CPU
43 Network 51 Information Center

Claims (5)

  A current location detection unit for detecting the current location, travel information creation processing means for creating travel information associated with the travel of the vehicle, location information transmission processing means for transmitting the current location to the information center as location information, and another vehicle travel performance acquisition request Other vehicle travel performance acquisition request processing means for transmitting to the information center, and travel information collection for collecting travel information of vehicles in a predetermined area set based on the position information based on the other vehicle travel performance acquisition request And an information collection system.   When the travel information collection processing means receives the other vehicle travel performance acquisition request, the vehicle determination processing means for identifying the vehicle in the predetermined area set based on the position information as the travel information providing vehicle, and the specified The information collection system according to claim 1, further comprising travel information transmission request processing means for transmitting a travel information transmission request to the travel information providing vehicle.   The information collection system according to claim 2, further comprising a travel information transmission processing unit that receives the travel information transmission request and transmits the travel information to an information center.   The information collection system according to claim 3, further comprising: another vehicle traveling result transmission processing unit that receives the traveling information and transmits the other vehicle traveling result to a vehicle that requests acquisition of the other vehicle traveling result.   Travel information creation processing means for creating travel information associated with the travel of the vehicle, location information transmission processing means for transmitting the current location detected by the current location detection unit to the information center as location information, and information on other vehicle travel performance acquisition requests Other vehicle travel performance acquisition request processing means for transmitting to the center, and travel information collection processing for collecting travel information of vehicles in a predetermined area set based on the position information based on the other vehicle travel performance acquisition request A program of an information collecting method characterized in that it functions as a means.

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