JP2012173979A - Probe data collection system and operation method for probe data collection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a probe data collection system for surely collecting the probe data of a desired section and the operation method of the probe data collection system.SOLUTION: Each in-vehicle device includes: a position information generation part; an in-vehicle transmission part; a probe data generation part; and a probe data storage part. The server device includes: a server reception part; and a vehicle selection part for determining whether or not the traveling section of each vehicle from the previous time to this time includes the predetermined collection object section of the probe data on the basis of the previous position data and this time position data by referring to a position information storage part, and for, when the result of determination is positive, selecting each vehicle as a probe data collection object vehicle.

Description

  The present invention relates to a probe data collection system and a method for operating the probe data collection system.

  In recent years, with the spread of information communication technology, as a navigation system, a system in which a server device and a vehicle-mounted device communicate with each other and exchange map information, traffic information, and the like has been increasing. In such a system, the server device collects probe data (data related to the vehicle) from a plurality of vehicles, and organizes map information and the like that the server device has. Here, the server device transmits and receives information to and from a large number of in-vehicle devices. Therefore, the amount of communication between the server device and the plurality of in-vehicle devices is increasing, and the load on the server device is increasing. Communication efficiency is desired.

  As related technology, Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-44543) discloses a probe data collection system. In this probe data collection system, the server receives the previous position information and the current position information from the vehicle-mounted device of each vehicle, estimates the section in the traveling direction, and identifies the vehicle that is expected to pass the link ID. In addition, there is a point that the specified vehicle is instructed to collect probe data.

  Another related technique is described in Patent Document 2 (Japanese Patent Laid-Open No. 2007-78600). In Patent Document 2, when a communication terminal exists around a landmark or is requested from a server, the surrounding situation is analyzed, and when the analysis result satisfies a certain condition, the terminal The point of transmitting information around a mobile body equipped with is to the server.

  Still another related technique is described in Patent Document 3 (Japanese Patent Laid-Open No. 2009-69900). In Patent Document 3, when the vehicle navigation device determines that the road shape recognized based on the captured image of the in-vehicle camera is different from the road shape based on the stored road map data, Information including a photographed image at that point is transmitted to an external data management server, and the data management server stores information about a point where the road shape in the road map data is different from the actual road shape. Are listed.

  Still another related technique is described in Patent Document 4 (Japanese Patent Laid-Open No. 2008-70557). In Patent Document 4, a navigation device captures a photographed image obtained by photographing a specific point whose position can be specified by a camera, selects a landmark included in the photographed image from a plurality of predetermined landmarks, and selects the selected landmark. The point that the selected landmark is associated with the specific point when the landmark is not associated with the specific point is described. When the navigation device displays a map on the display unit, the landmark is displayed at a point on the map with which the landmark is associated.

  Still another related technique is described in Patent Document 5 (Japanese Patent Laid-Open No. 2006-52972). In Patent Document 5, the navigation device determines that there is a change in the road shape when the imaging data from the camera includes a sign suggesting a temporary change in the road shape, and determines that there is a change in the road shape. When this is done, the points where the traveling locus data of the vehicle is accumulated and the link data to be changed in the road shape are corrected based on the traveling locus data, and the map data corresponding to the change in the road shape is updated. The point to be described is described.

  Still another related technique is described in Patent Document 6 (Japanese Patent Laid-Open No. 2008-39687). In Patent Document 6, a new road determination unit determines whether or not a road being traveled is a new road, and maps a travel locus in the case of a new road and an image around the vehicle captured by an in-vehicle camera. The point to be transmitted to the management device is described. The map management apparatus can determine the shape of the new road from the travel locus. Further, by analyzing the image, it is possible to determine more detailed information on the new road and what kind of facilities exist around the new road.

  Still another related technique is described in Patent Document 7 (Japanese Patent Laid-Open No. 2007-147567). In the map information update system according to Patent Document 7, a plurality of terminal devices acquire position information related to existing positions, transmit the acquired position information to a central device, and acquire map update information related to changes in facilities or roads Then, the acquired map update information is transmitted to the central device. The central device receives the position information and the map update information, and collates with the stored map information to determine whether or not the map information is different.

  Still another related technique is described in Patent Document 8 (Japanese Patent Laid-Open No. 2007-47271). In Patent Document 8, when a car navigation device registers new road information or a user edits a landmark, the updated information is evaluated and it is determined that the reliability is high based on the evaluation result. The update information is registered in the information center.

JP 2010-44543 A JP 2007-78600 A JP 2009-69900 A JP 2008-70557 A JP 2006-52972 A JP 2008-39687 A JP 2007-147567 A JP 2007-47271 A

  In the probe data collection system disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2010-44543), it is assumed that the server receives the previous position information and the current position information from the vehicle-mounted device of the vehicle, and the vehicle proceeds. Estimate parcels. Based on the estimation result, a vehicle that is likely to pass through a desired section is specified, and the specified vehicle is instructed to collect probe data. Therefore, it is possible to prevent similar traveling data from being collected in duplicate.

  However, in the probe data collection system described in Patent Document 1, a vehicle that has instructed collection of probe data does not necessarily pass through a desired section. Therefore, in some cases, in order to collect probe data in a desired section, it is necessary to give another probe data collection instruction to another vehicle. Alternatively, it is necessary to instruct a plurality of vehicles to collect probe data for a desired section at the same time.

  Accordingly, an object of the present invention is to provide a probe data collection system and a method for operating the probe data collection system that can reliably collect probe data in a desired section.

  The probe data collection system according to the present invention includes a server device and a plurality of in-vehicle devices mounted on a plurality of vehicles. Each of the plurality of in-vehicle devices includes a position information generation unit that generates position data indicating a current position of each vehicle, an in-vehicle device transmission unit that transmits the position data to the server device, and each vehicle. A probe data generation unit that generates probe data indicating related information, and a probe data storage unit that associates the probe data with the position data and stores the probe data as storage data in the storage data storage unit. The server device receives the position data from each of the in-vehicle devices and stores the position data in a position information storage unit, refers to the position information storage unit, and refers to the previous position data and the current position data. Based on the above, it is determined whether or not the traveling section of each vehicle from the previous time to this time includes a predetermined probe data collection target section. The vehicle selection part selected as a vehicle and the server transmission part which transmits a probe data collection instruction | indication with respect to the said probe data collection object vehicle are provided. The in-vehicle device transmission unit reads the accumulated data from the accumulated data storage unit and transmits it to the server device when each of the in-vehicle devices receives the probe data collection instruction. The server reception unit stores the received accumulated data as collected probe data.

  According to the above-described invention, the server device determines whether or not the traveling section of each vehicle includes the collection target section of the probe data based on the previous position data and the current position data. And when it determines with including, a probe data collection instruction | indication is transmitted with respect to the said vehicle. Therefore, the probe data in the probe data collection target section is reliably accumulated in the vehicle that has received the probe data collection instruction. Therefore, the server device can reliably receive the probe data of the desired section from the vehicle, and can suppress the communication amount in the probe data collection system.

  A server device according to the present invention is a server device used in the above-described probe data collection system.

  The in-vehicle device according to the present invention is an in-vehicle device used in the above-described probe data collection system.

  The operation method of the probe data collection system according to the present invention is an operation method of the probe data collection system including a server device and a plurality of in-vehicle devices mounted on a plurality of vehicles. In this operation method, each of the plurality of in-vehicle devices generates position data indicating a current position of each vehicle, each of the in-vehicle devices transmits the position data to the server device, A step in which each in-vehicle device generates probe data indicating information related to each vehicle, and a step in which each in-vehicle device associates the probe data with the position data and stores it in the accumulated data storage unit as accumulated data. The server device receives the position data from each in-vehicle device and stores the position data in the position information storage unit; the server device refers to the position information storage unit; Whether or not the travel section of each vehicle from the previous time to the current time includes a predetermined probe data collection target section based on position data Determining and including each vehicle as a probe data collection target vehicle, the server device transmitting a probe data collection instruction to the probe data collection target vehicle, When each in-vehicle device receives the probe data collection instruction, the step of reading the accumulated data from the accumulated data storage unit and transmitting it to the server device; and the server device has collected the received accumulated data Storing as probe data.

  According to the present invention, a probe data collection system and a method for operating a probe data collection system that can reliably collect probe data in a desired section are provided.

It is the schematic which shows the probe data collection system which concerns on embodiment. It is a block diagram which shows a server apparatus roughly. It is a block diagram which shows a vehicle-mounted apparatus. It is a conceptual diagram which shows the information stored in the information storage buffer. It is a flowchart which shows the operation | movement method of a probe data collection system. It is a conceptual diagram which shows a position information packet. It is a conceptual diagram which shows a probe data provision request packet. It is a conceptual diagram which shows a facility information packet. It is the schematic which shows the communication timing in a probe data collection system.

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

  FIG. 1 is a schematic diagram showing a probe data collection system 1 according to this embodiment. The probe data collection system 1 includes a server device 2 and a plurality of in-vehicle devices 4 (4-1 to 4-n). The plurality of in-vehicle devices 4 are mounted on each of a plurality of vehicles (not shown). The server device 2 and the plurality of in-vehicle devices 4 are connected via a network 3 so that wireless communication is possible. The server device 2 stores map data. The server device 2 transmits map data to each in-vehicle device 4. Each in-vehicle device 4 is configured by a car navigation device or the like, and realizes a navigation function or the like based on the received map data. Moreover, the server apparatus 2 has a function which collects the probe data which shows the information relevant to a vehicle from each vehicle-mounted apparatus 4, and updates map data based on the collected probe data.

  First, the configuration of the server device 2 will be described. FIG. 2 is a block diagram schematically showing the server device 2. As shown in FIG. 2, the server device 2 includes a server reception unit 5, a vehicle selection unit 6, a server transmission unit 7, a previous position information holding unit 8, a collection section list holding unit 9, and a map data storage unit 10. is doing. Among these, the server reception unit 5, the vehicle selection unit 6, and the server transmission unit 7 are realized, for example, by executing a server program stored in a storage medium such as a ROM (Read Only Memory) by a CPU (not shown). Is done. The previous position information holding unit 8, the collection section list holding unit 9, and the map data storage unit 10 are realized by a storage medium such as a hard disk.

  Map data is stored in the map data storage unit 10. Map data is data indicating a map. Traffic information (such as the presence or absence of traffic congestion) may be added to the map data.

  The collection section list holding unit 9 stores collection section information. The collection section information is information indicating a section (collection target section) in which probe data is to be collected as a list. The collection target section is determined in advance based on map data, for example.

  The server transmission unit 7 has a function of transmitting information to the in-vehicle device 4. The server transmission unit 7 transmits map data or probe data collection instructions to each in-vehicle device 4.

  The server reception unit 5 has a function of receiving information from the in-vehicle device 4. From the in-vehicle device 4, position information indicating the position of the vehicle and probe data (facility information) are sent to the server device 2. When the server reception unit 5 acquires the position information, the server reception unit 5 stores the acquired position information in the previous position information holding unit 8 and notifies the vehicle selection unit 6 thereof. In addition, when acquiring the probe data, the server reception unit 5 stores the probe data in the map data storage unit 10 as collected probe data, and reflects the collected probe data in the map data.

  The previous position information holding unit 8 stores position information indicating the position of each vehicle. The previous position information storage unit 8 stores the position information acquired last time.

  The vehicle selection part 6 is a part which determines the vehicle (probe data collection object vehicle) used as the collection object of probe data. Based on the current position data acquired from the server reception unit 5 and the previous position data stored in the previous position information holding unit 8, the vehicle selection unit 6 is a travel section of each vehicle from the previous time to the current time. Identify Then, the vehicle selection unit 6 refers to the collection section list holding unit 9 and determines whether or not the identified travel section includes the collection target section. When the identified travel section includes the collection target section, the vehicle selection unit 6 determines the vehicle as the probe data collection target vehicle and notifies the server transmission unit 7 of the selected vehicle ID that identifies the probe data collection target vehicle. To do. In this case, the server transmission unit 7 transmits a probe data collection instruction to the probe data collection target vehicle.

  Then, the structure of the vehicle-mounted apparatus 4 is demonstrated. FIG. 3 is a block diagram showing the in-vehicle device 4. As illustrated in FIG. 3, the in-vehicle device 4 includes an in-vehicle device reception unit 12, an in-vehicle device transmission unit 11, a buffer switching unit 13 (probe data storage unit), a position information generation unit 14, and a facility information collection unit 15 (probe data). Generation unit) and an accumulated data storage unit 16. Among these, the in-vehicle device reception unit 12, the in-vehicle device transmission unit 11, the buffer switching unit 13, the position information generation unit 14, and the facility information collection unit 15 are previously stored in a storage medium such as a ROM (Read Only Memory) by a CPU (not shown). This is realized by executing the stored in-vehicle device program. The accumulated data storage unit 16 is provided with a plurality (three) of information accumulation buffers 16-1 to 16-3.

  The position information generation unit 14 has a function of generating position information indicating the current position of the vehicle. The position information generation unit 14 generates position information by using, for example, a GPS (Global Positioning System) function.

  The facility information collection unit 15 has a function of identifying the type of facility existing around the vehicle and generating facility information indicating the identified type of facility. For example, the facility information collection unit 15 acquires image data indicating the periphery of the vehicle using a camera mounted on the vehicle, and identifies the type of facility based on the acquired image data.

  The buffer switching unit 13 has a function of associating the facility information with the position information and storing it in the accumulated data storage unit 16 as probe data. That is, the buffer switching unit 13 stores the facility information in any one of the plurality of information accumulation buffers 16-1 to 16-3 in association with the position information. In addition, when the buffer switching unit 13 acquires a buffer switching request from the in-vehicle device transmission unit 11, the buffer switching unit 13 switches the information accumulation buffers 16-1 to 16-3 that are storage destinations.

  Probe data is accumulated in the accumulated data storage unit 16 by the buffer switching unit 13. FIG. 4 is a conceptual diagram showing information stored in each of the information storage buffers 16-1 to 16-3 provided in the stored data storage unit 16. As shown in FIG. 4, each information accumulation buffer stores an information accumulation start position, an information accumulation end position, the number of information acquisitions, and probe data (a facility type and a facility position).

  The in-vehicle device receiving unit 12 has a function of receiving information transmitted from the server device 2. When receiving the probe data collection instruction, the in-vehicle device reception unit 12 notifies the in-vehicle device transmission unit 11 of the facility information transmission instruction.

  The in-vehicle device transmission unit 11 has a function of transmitting information to the server device 2. The in-vehicle device transmission unit 11 acquires position information and determines whether or not the vehicle has passed a preset position information transmission point. When passing the position information transmission point, the in-vehicle device transmission unit 11 transmits the position information to the server device 2. Further, when receiving the facility information collection instruction from the in-vehicle device receiving unit 12, the in-vehicle device transmitting unit 11 reads out the probe data from the accumulated data storage unit 16 via the buffer switching unit 13, and the read probe data is stored in the server device 2. Send to.

  Subsequently, an operation method of the probe data collection system according to the present embodiment will be described. FIG. 5 is a flowchart showing an operation method of the probe data collection system.

Step S1: Determination of position information transmission point In the in-vehicle device 4, the in-vehicle device transmission unit 11 acquires the position information and determines whether or not the vehicle has passed the position information transmission point. If the position information transmission point has been passed, the process of the next step S2 is performed. If not, the process of step S4 is performed.

Step S <b> 2: Transmission of position information When the position information transmission point is passed, the in-vehicle device transmission unit 11 transmits the position information to the server device 2. Specifically, the in-vehicle device transmission unit 11 transmits the position information packet P1. FIG. 6A is a conceptual diagram showing the position information packet P1. As shown in FIG. 6A, the position information packet P1 includes a vehicle ID uniquely assigned to the vehicle and position information.

Step S3: Switching of Information Storage Buffer The in-vehicle device transmission unit 11 generates a buffer switching request and notifies the buffer switching unit 13 of it. The buffer switching unit 13 switches the information accumulation buffer serving as the probe data storage destination.

Step S4: Accumulation of probe data When the facility information collection unit 15 acquires facility information by the camera, the buffer switching unit 13 associates the location information with the facility information and stores it in the information storage buffer as probe data. If it has passed the position information transmission point in step S1, the probe data is accumulated in the information accumulation buffer newly set as the storage destination.

Step S5; Reception of Position Information On the other hand, when position information (position information packet P1) is transmitted in step S2, in the server device 2, the server reception unit 5 receives the position information packet P1. The server reception unit 5 stores the received position information packet P1 in the previous position information holding unit 8 and notifies the vehicle selection unit 6 of it.

Step S6: Load previous position information The vehicle selection unit 6 identifies the vehicle ID described in the position information packet P1, refers to the previous position information holding unit 8, and stores the previous position information for the identified vehicle ID. Check whether it is done. When the previous position information is stored, the vehicle selection unit 6 loads the previous position information.

Step S7: Load Collection Section Information Next, the vehicle selection unit 6 accesses the collection section list holding unit 9 and loads the collection section information.

Step S8; Section Determination Next, the vehicle selection unit 6 travels the vehicle from the previous time to the current time based on the position information (current position information) acquired in step S5 and the previous position information acquired in step S6. Identify the interval. Then, it is determined whether the identified travel section includes the collection target section indicated in the collection section information acquired in step S7. If the collection target section is included, the next step S9 is performed. When the collection target section is not included, the server apparatus 2 repeats the processes after step S5.

Step S9: Transmission of probe data collection instruction When the collection target section is included in step S8, the vehicle selection unit 6 selects the corresponding vehicle as the probe data collection target vehicle, and sets the vehicle ID as the selected vehicle ID as a server. Notify the transmitter 7. The vehicle selection unit 6 also notifies the server transmission unit 7 of information indicating the collection target section. The server transmission unit 7 generates a probe data collection instruction indicating that the probe data in the collection target section is collected for the vehicle specified by the selected vehicle ID, and transmits the probe data collection instruction to the corresponding vehicle. The probe data collection instruction is transmitted to the corresponding vehicle as a probe data provision request packet P2. FIG. 6B is a conceptual diagram showing a probe data provision request packet P2. As shown in FIG. 6B, the probe data provision request packet P2 includes information indicating a vehicle ID, an information provision instruction, an information collection section start position, and an information collection section end position. In addition, after transmitting the probe data provision request packet P2, the vehicle selection unit 6 reflects in the collection section information stored in the collection section list holding unit 9 that the collection target section has been requested to collect probe data.

Step S10: Reception of Probe Data Collection Instruction In the in-vehicle device 4, the in-vehicle device reception unit 12 determines whether or not a probe data collection instruction has been sent from the server. When a probe data collection instruction is sent, the next step S11 is performed. When the probe data collection instruction is not sent, the in-vehicle device 4 repeats the processes after step S1.

Step S11: Transmission of Probe Data When the in-vehicle device 4 receives the probe data collection instruction, the in-vehicle device reception unit 12 notifies the in-vehicle device transmission unit 11 of the facility information transmission instruction. The in-vehicle device transmission unit 11 identifies the information collection section (information collection section start position and information collection section end position) indicated by the probe data collection instruction (probe data provision request packet P2). Probe data corresponding to the section is read out via the buffer switching unit 13. Then, the in-vehicle device transmission unit 11 transmits the read probe data to the server device 2. The probe data is transmitted to the server device 2 as a facility information packet P3. FIG. 6C is a conceptual diagram showing the facility information packet P3. As shown in FIG. 6C, the facility information packet P3 includes a vehicle ID, the number of facility information acquisitions, and a plurality of facility information 1 to n (probe data).

Step S12: Receiving Probe Data In the server device 2, the server device receiving unit 5 acquires probe data (facility information packet P3).

Step S13: Update of map data The server apparatus receiving unit 5 stores the probe data as collected probe data in the map data storage unit 10, and reflects the contents of the probe data in the map data. Thereafter, the server apparatus 2 repeats the processes after step S5.

  Then, the effect of this embodiment is demonstrated. FIG. 7 is a schematic diagram showing communication timings in the probe data collection system according to the present embodiment.

  As shown in FIG. 7, it is assumed that the vehicle passes the position information transmission point at time T1. In this case, the in-vehicle device 4 transmits the position information packet P1 to the server device 2 at time T1 (step S2). Further, it is assumed that the vehicle passes the next position information transmission point at time T2. In this case, the in-vehicle device 4 transmits the position information packet P1 to the server device 2 even at time T2 (step S2).

  When the server apparatus 2 receives the position information at time T2, in step S8, the position information between the position information received at time T1 (previous position information) and the position information received at time T2 (current position information) is received. It is determined whether or not a collection target section exists. That is, it is determined whether or not the collection target section is included in the travel section of the vehicle from time T1 to time T2. If the collection target section is included, at time T3, a probe data collection instruction (probe data provision request packet P2) is transmitted from the server device 2 to the in-vehicle device 4 (step S9). When receiving the probe data collection instruction at time T3 (step S10), the in-vehicle device 4 reads information from the information storage buffer in which the probe data of the collection target section is stored, and the probe is sent to the server device 2 at time T4. Data (facility information packet P3) is transmitted (step S11).

  Here, according to the present embodiment, the server device 2 uses the previous position information and the current position information, and corresponds to a case where the collection target section is included in the travel section from the previous time to the current time. A probe data collection instruction is transmitted to the vehicle. Therefore, the in-vehicle device 4 that has received the probe data collection instruction always has the probe data in the collection target section. The server apparatus 2 can reliably obtain the probe data in the collection target section by one communication. Therefore, communication traffic between the server device 2 and the in-vehicle device 4 can be reduced.

  In addition, as FIG. 7 shows, the vehicle-mounted apparatus 4 transmits probe data (facility information packet P3) at the time T4. Here, time may be spent transmitting probe data. While probe data is being transmitted, the vehicle may reach the next position information transmission point. In this case, the information accumulation buffer set as the probe data storage destination is switched. Here, when the information storage buffer at the storage destination is switched to the information storage buffer used for probe data transmission, the information storage buffer is overwritten even though probe data transmission has not ended. It will end up. However, in this embodiment, three information storage buffers are provided. Therefore, even if the vehicle reaches the next position information transmission point while the probe data is being transmitted, the information storage buffer serving as the probe data storage destination is not used for the probe data transmission. It is possible to switch to the accumulation buffer. That is, the provision of the three information storage buffers prevents the information storage buffer from being overwritten even when time is spent in transmitting probe data.

DESCRIPTION OF SYMBOLS 1 Probe data collection system 2 Server apparatus 3 Network 4 (4-1 to 4-n) In-vehicle apparatus 5 Server receiving part 6 Vehicle selection part 7 Server transmission part 8 Previous position information holding part 9 Collection section list holding part 10 Map data storage (Collected probe data storage)
11 vehicle-mounted device transmission unit 12 vehicle-mounted device reception unit 13 buffer switching unit (probe data storage unit)
14 position information generation unit 15 facility information collection unit (probe data generation unit)
16 (16-1 to 16-3) information storage buffer

Claims (7)

A server device;
A plurality of in-vehicle devices mounted on a plurality of vehicles;
Comprising
Each of the plurality of in-vehicle devices is
A position information generation unit that generates position data indicating a current position of each vehicle;
An in-vehicle device transmission unit for transmitting the position data to the server device;
A probe data generator for generating probe data indicating information related to each vehicle;
A probe data storage unit that associates the probe data with the position data, and stores the probe data in a stored data storage unit as stored data;
The server device
A server receiver that receives the position data from each of the in-vehicle devices and stores the position data in a position information storage;
With reference to the position information storage unit, based on the previous position data and the current position data, whether the travel section of each vehicle from the previous time to the current time includes a predetermined probe data collection target section A vehicle selection unit that determines whether or not to include each vehicle as a probe data collection target vehicle,
A server transmission unit that transmits a probe data collection instruction to the probe data collection target vehicle,
The in-vehicle device transmission unit reads the accumulated data from the accumulated data storage unit and transmits it to the server device when each of the in-vehicle devices receives the probe data collection instruction,
The server reception unit is a probe data collection system that stores the received accumulated data as collected probe data. The probe data collection system according to claim 1,
Each vehicle is equipped with an imaging device that captures an image of the surroundings of each vehicle,
The probe data generation unit generates image data obtained by the imaging device as the probe data. The probe data collection system according to claim 1 or 2,
The on-vehicle transmission unit is a probe data collection system that transmits the position data when each vehicle passes a preset position information transmission point. A probe data collection system according to claim 3,
The accumulated data storage unit is provided with a plurality of information accumulation buffers,
The probe data storage unit accumulates the accumulated data in any one of a plurality of information accumulation buffers, and switches the information accumulation buffer as the accumulation destination each time the vehicle passes the position information transmission point. Probe data collection system. The server apparatus used in the probe data collection system as described in any one of Claims 1 thru | or 4. An in-vehicle device used in the probe data collection system according to any one of claims 1 to 4. A method for operating a probe data collection system comprising a server device and a plurality of in-vehicle devices mounted on a plurality of vehicles,
Each of the plurality of in-vehicle devices generating position data indicating a current position of each vehicle;
Each of the in-vehicle devices transmits the position data to the server device;
Each vehicle-mounted device generating probe data indicating information related to each vehicle;
Each of the in-vehicle devices associates the probe data with the position data, and stores it in the accumulated data storage unit as accumulated data;
The server device receives the position data from each of the in-vehicle devices and stores it in a position information storage unit;
The server device refers to the position information storage unit, and based on the previous position data and the current position data, the travel section of each vehicle from the previous time to the current time is a predetermined probe data collection target. Determining whether or not a section is included, and if so, selecting each vehicle as a probe data collection target vehicle; and
The server device transmits a probe data collection instruction to the probe data collection target vehicle; and
When each of the in-vehicle devices receives the probe data collection instruction, the step of reading the accumulated data from the accumulated data storage unit and transmitting it to the server device;
The server device stores the received accumulated data as collected probe data;
A method of operating a probe data collection system comprising:

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