JP4424168B2 - Information collection system and program - Google Patents

Description

  The present invention relates to an information collection system and a 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 vehicle position displayed on the map screen, the map around the vehicle position, and the 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, the navigation device sends a travel route indicating a route during which the vehicle is traveling, travel time information indicating a time that the vehicle has passed for each travel point, and the like to the management center. The travel route, travel time information, etc. are collected, statistical processing is performed on the travel route, travel time information, etc., and the congestion of the road, the required time from the departure place to the destination, etc. are calculated. (For example, refer to Patent Document 1).
JP 2002-150467 A

  However, in the conventional navigation device, since the travel route, travel time information, etc. for all roads on which the vehicle is traveling are transmitted to the management center, not only the communication cost increases, The amount of calculation for performing statistical processing in the management center increases, and a high-performance processing device for that purpose is required, which increases the cost for collecting information.

  In addition, when trying to collect real-time travel routes, travel time information, etc. for all roads, it is necessary to collect travel routes, travel time information, etc. from an extremely large number of vehicles. It will be high.

  It is an object of the present invention to provide an information collection system and program that can solve the problems of the conventional navigation system and reduce the cost for collecting information.

Therefore, in the information collection system of the present invention, based on the current location detection unit that detects the current location and the current location, it is determined whether or not the road link to be passed is a road link that is highly likely to generate congestion. A road link determination processing means for determining that the passing road link is a road link for which driving information is collected when the passing road link is a road link with a high possibility of occurrence of traffic congestion; And travel information transmission processing means for transmitting the travel information of the road links to be collected to the information center at a predetermined transmission timing.
Then, the road link determination processing means determines whether or not the passing road link is a road link with a high possibility of occurrence of congestion based on information on the event to be held.

  According to the present invention, based on the information of the event to be held, it is determined whether or not the passing road link is a road link that is highly likely to cause congestion, and the passing road link may cause congestion. When the road link is high, it is determined that the passing road link is a road link for which the travel information is collected, so the communication cost for transmitting the travel information from the in-vehicle device to the information center is reduced. In addition, the amount of calculation for performing statistical processing is reduced in the information center, so that a high-performance processing device is not required, and the cost for collecting information can be reduced.

  Moreover, even if it is intended to collect the travel information in real time for all roads and collect travel information from an extremely large number of vehicles, the cost for collecting information can be reduced.

  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, and FIG. 2 is a flowchart showing an operation of the navigation device according to the embodiment of the present invention.

  In FIG. 1, reference numeral 14 denotes an information terminal, for example, a navigation device as an in-vehicle device mounted on a vehicle. The navigation device 14 includes a GPS sensor 15 as a current location detection unit for detecting a current location, various types of data in addition to map data. 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 A communication unit 38 serving as a transmission / reception unit functioning as the navigation processing unit 17, the GPS sensor 15, the data recording unit 16, the direction sensor 18, the operation unit 34, the display unit 35, the voice input unit 36, and the voice output unit. 37 and the communication unit 38 are connected. 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 a 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. Then, the beacon receiver receives traffic information, regulation information, parking information, traffic accident information, service area congestion status information, etc. as traffic information, or the FM receiver 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, and a database (DB) 58 as an information recording unit. The server 53 includes a CPU 54, a RAM 55, a ROM 56, and the like as control devices. And functions as a computer based on a predetermined program, 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, the navigation processing unit 17, the CPUs 31, 54, and the server 53 can be combined to function as a computer. 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 link number data (ID) for each road link Li (i = 1, 2,..., N), a direction flag indicating a traveling direction, traffic information provided by a road traffic information center, and the like. Or congestion level as a traffic congestion index indicating the degree of traffic congestion every 15 [minutes] in this embodiment. KJi (t) (i = 1, 2,..., N) or the like. In the present embodiment, the degree of traffic congestion KJi (t) is represented by traffic congestion, congestion, and non-congestion.

  In addition, the travel history data is the travel history data that constitutes the travel data on the road on which the vehicle traveled, that is, the data representing the travel performance on the travel road, that is, the probe data, and represents the travel performance on the travel road of the own vehicle It consists of history data and other vehicle travel history data, which is travel history data representing the travel performance of other vehicles on the road.

  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 the present embodiment, the degree of traffic congestion SJi (t) is represented by traffic congestion, congestion, and non-congestion.

  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 and recorded in the data recording unit 16. For this purpose, the other vehicle travel record collection processing means (not shown) of the CPU 31 performs other vehicle travel record collection processing, and the link required time STi (t), the congestion degree SJi (t), etc. are traveled via the communication unit 38. The result is received and recorded in the data recording unit 16. Further, the general data is transmitted from the information center 51 and recorded in the data recording unit 16. Therefore, general information acquisition processing means (not shown) of the CPU 31 performs general information acquisition processing, receives general data via the communication unit 38, and records it in the data recording unit 16. It should be noted that various events or facility information in the general data can be recorded in advance in the data recording unit 16.

  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 made statistical data by using the statistical data in combination with at least one of travel history data and general data and performing statistical processing.

  In yet another embodiment, the map data and statistical data are also transmitted from the information center 51 and recorded in the data recording unit 16. For this purpose, the map information collection processing unit (not shown) of the CPU 31 performs map information collection processing, receives map data via 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 via 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, the traffic information acquisition processing means (not shown) of the CPU 31 performs traffic information acquisition processing, and receives and acquires the current traffic information via 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 set 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, if necessary, a route can be searched based on current traffic information, and further on traffic information such as statistical data and travel history data in addition to the destination and map data. 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, in the navigation device 14, the traffic information acquisition processing means can acquire the current traffic information from the road traffic information center.

  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 generated 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 changed to red, orange, or blue depending on the congestion degree KJi (t), SJi (t), or VJi. For example, the congestion arrow is red and congested. 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 KJi (t), SJi (t), VJi, etc., for example, when the pattern is a solid line and congestion when there is a congestion 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, for a pre-selected vehicle, for example, for a 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. The travel information is transmitted to the information center 51. In the information center 51, statistical processing means (not shown) of the CPU 54 performs statistical processing, collects travel information, and based on the collected travel information, the link required time STi (t) and the congestion degree SJi ( t) and the like, and the calculated link required time STi (t), congestion degree SJi (t), and the like are provided to each vehicle as the other vehicle traveling performance.

  However, if it is attempted to collect travel information for all roads on which each vehicle travels, not only does the communication cost for transmitting travel information from the navigation device 14 to the information center 51 increase, but statistical processing is performed in the information center 51. The amount of calculation for performing the processing increases, and a high-performance processing device for that purpose is required, which increases the cost for collecting information.

  In addition, if it is attempted to collect travel information in real time for all roads, travel information is collected from an extremely large number of vehicles, and the cost for collecting information increases accordingly.

  Therefore, the navigation system configured as described above is used as an information collection system, and the navigation device 14 is based on the current location on a road where there is a high possibility of occurrence of traffic jams or a road with high demand for traffic jam information. Travel information is created only for roads for which certain travel information is collected and transmitted to the information center 51. That is, the road link determination processing means (not shown) of the CPU 31 performs road link determination processing, and travels only on road links that are highly likely to cause traffic congestion among road links that pass through or that have high demand for traffic information. Information is created and transmitted to the information center 51. For this purpose, the road link determination processing means collects the travel information of the road link that passes along with the travel depending on whether at least one of the following first to seventh determination conditions is satisfied. Determine whether the road link is the target.

  The road link determination processing means is configured by the road link determination processing means, and the road determination processing means performs road determination processing, and based on the current location, the road to be traveled is a road from which travel information is collected. If the road to be traveled is a road for which travel information is collected, travel information is created for each road.

  Therefore, the road link determination processing means reads the current traffic information, and based on the regulation information in the current traffic information, whether the road link to be passed is a road link scheduled to be regulated by construction, etc. To determine whether or not the first determination condition is satisfied, and when the passing road link is a road link scheduled to be regulated, it is determined that the first determination condition is satisfied and the regulation schedule is determined. When there is no road link, it is determined that the first determination condition is not satisfied. Further, the road link determination processing means reads the general data, and on the basis of the weather information in the general data, the road link through which the road link is informed of weather warnings, warnings, etc., is under abnormal weather. It is determined whether or not the second determination condition is established depending on whether or not the road link is in the area, and the second determination condition is obtained when the passing road link is a road link in the area under abnormal weather. Is determined to be satisfied, and it is determined that the second determination condition is not satisfied when the road link is not in an area under abnormal weather.

  The road link determination processing means reads the general data, and based on the event information in the general data, whether the road link to pass is a road link in an area where an event such as a fireworks display is held. It is determined whether or not the third determination condition is satisfied, and it is determined that the third determination condition is satisfied when the passing road link is a road link in the area where the event is held. When the road link is not within the area where the event is held, it is determined that the third determination condition is not satisfied.

  Further, the road link determination processing means reads general data, and based on the facility information in the general data, whether or not the road link that passes through is a road link in a region where there is a large facility nearby. It is determined whether or not the fourth determination condition is satisfied, and it is determined that the fourth determination condition is satisfied when the road link passing through is a road link in a region where a large facility is nearby. If the road link is not in the area where there is a large facility in the vicinity, it is determined that the fourth determination condition is not satisfied.

  Further, the road link determination processing means performs the fifth determination depending on whether or not the passing road link is a road link that is not targeted for providing current traffic information by the road traffic information center, that is, a non-information providing road link. It is determined whether the condition is satisfied, and it is determined that the fifth determination condition is satisfied when the passing road link is a non-information providing road link. It is determined that the determination condition is not satisfied.

  Further, the road link determination processing means reads the vehicle speed as it passes through the road link, and between the average vehicle speed included in the static traffic information such as road traffic census information and the vehicle speed, It is determined whether or not the sixth determination condition is satisfied depending on whether there is a difference of a predetermined value, for example, 20 [km / h] or more, and there is a difference of a predetermined value or more between the average vehicle speed and the vehicle speed. In this case, it is determined that the sixth determination condition is satisfied, and it is determined that the sixth determination condition is not satisfied when there is no difference greater than or equal to a predetermined value.

  The road link determination processing means has a seventh determination condition depending on whether or not the road link that passes is a road link in a region that is preselected as a place where traffic congestion is likely to occur based on a survey such as a questionnaire. If the road link that passes through is a road link in the preselected area, it is determined that the seventh determination condition is satisfied, and the road link in the preselected area If it is not a road link, it is determined that the seventh determination condition is not satisfied.

  The road link determination processing means is a target on which road links that pass along with traveling collect travel information when at least one of the first to seventh determination conditions is satisfied. If the road link is determined to be a road link and none of the first to seventh determination conditions is satisfied, the road link that passes along with the travel is not a target for collecting travel information. It is judged that.

  Subsequently, the travel information creation processing means (not shown) of the CPU 31 performs travel information creation processing, and when the road link passing through the travel is a road link for which travel information is collected, as described above, Each time 1 [second] elapses, the coordinates and the vehicle speed are read, and the coordinates and the vehicle speed are created as vehicle travel information.

  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 The time required for traveling between the predetermined nodes (between adjacent nodes or nodes separated by several nodes) while reading the coordinates of the predetermined nodes on each road link, that is, the node required time , The coordinates and node required time as travel information, the actual link time required to actually travel the road link, the road link number and the actual link time as travel information, It is possible to read the vehicle speed while passing, calculate the average vehicle speed on the road link, and use the road link number and the average vehicle speed as travel information.

  Subsequently, a travel information transmission processing unit (not shown) of the CPU 31 performs a travel information transmission process, reads the time, determines whether it is a preset transmission timing of the travel information, and at the transmission information transmission timing. If there is, the traveling information is transmitted to the information center 51.

  In the present embodiment, the travel information is sequentially transmitted, and the travel information transmission processing means transmits the travel information immediately after the travel information is created. It can be transmitted after a time, for example, 5 [minutes] has passed, or can be transmitted periodically, for example, every time 10 [minutes] have passed.

  In the information center 51, the travel information collection processing means (not shown) of the CPU 54 performs travel information collection processing, receives the travel information transmitted from the navigation device 14 via the communication unit 57, and the statistical processing means of the CPU 54. Calculates the link required time STi (t), the congestion degree SJi (t), etc. based on the received travel information, and calculates the calculated link required time STi (t), the congestion degree SJi (t), etc. Is recorded in the database 58. Then, the travel record providing processing means (not shown) of the CPU 54 performs the travel record providing process, and transmits the link required time STi (t), the congestion degree SJi (t), etc. as the travel record of other vehicles to the navigation device 14 of the predetermined vehicle. And provide.

  As described above, in the present embodiment, the vehicle travels only on roads or road links that are highly likely to cause traffic jams, roads or road links that are highly demanded for traffic jam information, etc. Since the information is generated, not only the communication cost for transmitting the travel information from the navigation device 14 to the information center 51 can be reduced, but also the calculation amount for performing statistical processing in the information center 51 is reduced. As a result, a high-performance processing apparatus is not required, and the cost for collecting information can be reduced.

  Moreover, even if it is intended to collect the travel information in real time for all roads and collect travel information from an extremely large number of vehicles, the cost for collecting information can be reduced.

Next, a flowchart will be described.
Step S1: It is determined whether or not the road link is a road link for which traveling information is collected. If the road link is a road link for which traveling information is collected, the process proceeds to step S2, and if the road link is not a target for collecting traveling information, the process returns to step S1.
Step S2: Create travel information.
Step S3: It is determined whether it is the transmission timing of the travel information. When it is the transmission timing of the travel information, the process proceeds to step S4, and when it is not the transmission timing of the travel information, the process returns to step S1.
Step S4 The travel information is transmitted and the process is terminated.

  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.

Explanation of symbols

14 Navigation device 15 GPS sensor 17 Navigation processing unit 31 CPU
43 Network 51 Information Center 53 Server

Claims (4)

Based on the current location detection unit that detects the current location and whether or not the road link that passes through is a road link that is highly likely to cause traffic jams, the traffic link that passes through the current location may possibly be jammed If it is higher road link, traveling information creating processing road link to create a road link determination processing means determines that the road link for which to gather travel information, the travel information associated with the running of the vehicles passing And road information determination processing means for transmitting the road link travel information to be collected to the information center at a predetermined transmission timing, and the road link determination processing means includes information on an event to be held. based on the information collection system characterized in that the road link through which it is determined whether the road link is likely that congestion occurs Based on the current location detection unit that detects the current location and whether or not the road link that passes through is a road link that is highly likely to cause traffic jams, the traffic link that passes through the current location may possibly be jammed When the road link is high, the road link determination processing means for determining that the passing road link is the road link for which the travel information is collected, and the travel information creation processing means for creating the travel information accompanying the travel of the vehicle And travel information transmission processing means for transmitting the road link travel information to be collected to the information center at a predetermined transmission timing, and the road link determination processing means is based on facility information. An information collection system for determining whether or not a road link to be performed is a road link with a high possibility of occurrence of congestion. The computer, on the basis of the current position detected by the current position detection unit, a possibility that a road link that passes it is determined whether the road link is likely that congestion occurs, a road link passing traffic congestion occurs If it is higher road link, a road link determination processing means determines that the road link for which road link through to collect travel information, travel information creation processing for creating a traveling information accompanying the traveling of vehicles means, and causes to function as travel information transmission processing means for transmitting the travel information of a road link for which to the collected information center at a predetermined transmission timing, the road link determination processing unit, the information of the event to be held based on, characterized in that the road link to the potential traffic jam occurs is judged whether the high road link passing Program. Based on the current location detected by the current location detection unit, the computer determines whether the passing road link is a road link that is highly likely to cause congestion, and the passing road link may cause congestion. Road link determination processing means for determining that the road link to be passed is a road link for which travel information is collected when the road link is high, travel information creation processing means for creating travel information associated with travel of the vehicle, And function as a travel information transmission processing means for transmitting the travel link information to be collected to the information center at a predetermined transmission timing, and the road link determination processing means passes based on facility information. A program characterized by determining whether or not a road link is a road link that is highly likely to cause a traffic jam.

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