JP2010044543A - Probe data collection system, probe data collection method, program, and program recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To collect travel data from a vehicle having an in-vehicle unit such as a car navigation system in which destination, traveling route and estimated pass time and the like are not set in advance, and to prevent similar traveling data from being redundantly collected. <P>SOLUTION: On the basis of map information divided into arbitrary zones, and having a unique ID for each zone, a traffic information generation server receives previous location information and current location information on a location reached when a predetermined time elapses after a vehicle enters a current map ID, from the in-vehicle equipment of each vehicle, and estimates the map ID of a traveling direction from the received previous location information of the map ID and the current location information of the map ID, and specifies a vehicle which is likely to pass a link ID, and instructs the specified vehicle to collect probe data. On the other hand, the in-vehicle equipment of the specified vehicle receives the instruction to collect the probe data, sets the link ID, measures the time when the link ID is passed, calculates the average speed, and transmits the link ID and the time information when the vehicle has passed the zone and the average speed, to the traffic information generation server. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a probe data collection system, a probe data collection method, a program, and a program recording medium that collect travel data measured by a vehicle or the like and use it for traffic information.

  Conventionally, traffic information has been distributed from a VICS (road traffic information communication system) center or the like. However, since no information is provided in a section where no fixed sensor is installed on the road, the information providing area is limited. In view of this, in recent years, a probe data collection system and a probe data collection method for generating traffic information by collecting data from a traveling vehicle have begun to be put into practical use.

  In this system, an information providing device such as an in-vehicle device mounted on a vehicle records travel data such as the speed and travel locus of the vehicle and transmits the data to the information collecting device, which is transmitted from each information providing device in the information collecting device. Traffic information is generated by collecting and analyzing travel data. However, in this system, when a method using a mobile phone or the like is used as a means for transmitting data from each information providing device to the information collecting device, the communication cost for data transmission becomes enormous, so the cost is low. There is a need for effective data collection.

Therefore, it comprises a probe vehicle, an in-vehicle device such as a car navigation system mounted on the probe vehicle, and a center that receives travel data from the in-vehicle device and generates traffic information. The center includes a departure point, a destination, a travel route, There has been proposed a system for determining a collection section in which data is transmitted for each vehicle-mounted device in which a predicted passage time is set in advance (see, for example, Patent Document 1).
JP 2006-146645 A

  However, in the technique described in Patent Document 1, since the collection target is determined by the information collection device, the information providing device does not need a determination function and can be made inexpensive. Moreover, since it is possible to determine the collection target so as not to collect the same traveling data from a plurality of information providing apparatuses, it is possible to prevent excessive data collection due to the duplicate collection. However, since it is indispensable to use a vehicle in which an origin, destination, travel route, estimated passage time, etc. are set in advance as an on-board device such as a car navigation system, the necessary data is sufficient. There is a problem that cannot be collected.

  Therefore, the present invention has been made in view of the above circumstances, and is intended for a vehicle in which a destination, a travel route, a predicted passing time, and the like are not set in advance in an in-vehicle device such as a car navigation system, and the same An object of the present invention is to provide a probe data collection system, a probe data collection method, a program, and a program recording medium that can prevent duplicate collection of travel data.

  The present invention proposes the following items in order to solve the above-described problems.

  (1) The present invention is a probe data collection system comprising an in-vehicle device and a traffic information generation server, wherein the traffic information generation server is divided into arbitrary sections, and a unique ID is assigned to each section. Position information receiving means for receiving the immediately preceding position information from the in-vehicle device of each vehicle and the current position information which is the position information after a predetermined time has elapsed since entering the current map ID based on the map information; A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. Probe data collection vehicle specifying means and instruction means for instructing the specified vehicle to collect probe data, and the in-vehicle device of the specified vehicle is configured to generate the traffic information A position information transmitting means for transmitting the previous position information and the current position information to a server, and a setting for receiving a probe data collection instruction and setting a link ID corresponding to a probe data collection section Means, a calculation means for measuring a passing time of the corresponding link ID and calculating an average speed, a link ID of a section in which the probe data is collected, time information when the section is passed, and the calculation And a probe data transmitting means for transmitting the average speed to the traffic information generation server.

  According to the present invention, the position information receiving means of the traffic information generation server is divided into arbitrary sections, and the position immediately before the in-vehicle device of each vehicle is based on the map information to which each section has a unique ID. Information and current position information that is position information after a predetermined time has elapsed since entering the current map ID, and the probe data collection vehicle specifying means receives the position information of the most recent map ID received and the current map The map ID in the traveling direction is estimated from the position information of the ID, the vehicle that is expected to pass the link ID corresponding to the probe data collection section is specified, and the instructing means sends the probe data to the specified vehicle. Direct collection. The position information transmission means of the in-vehicle device of the specified vehicle transmits the previous position information and the current position information to the traffic information generation server, and the setting means receives the probe data collection instruction, A link ID corresponding to the collection section is set. Then, the calculation means measures the passage time of the corresponding link ID, calculates the average speed, and the probe data transmission means indicates the link ID of the section in which the probe data is collected and the time when it passes through the section. The information and the calculated average speed are transmitted to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the departure point, destination, travel route, estimated passage time, etc. Even when the target vehicle is not set, it is possible to prevent the same collection of travel data.

  (2) The probe data collection system according to (1) proposes a probe data collection system characterized in that the number of vehicles specified by the probe data collection vehicle specifying means is plural.

  According to this invention, the number of vehicles specified by the probe data collection vehicle specifying means is plural. In other words, since it is intended for vehicles with in-vehicle devices such as car navigation systems that do not have a departure point, destination, travel route, estimated time of passage, etc., the necessary probe data can be obtained by making the number of vehicles to be specified multiple. The collection probability can be increased.

  (3) The present invention is a probe data collection system comprising an in-vehicle device and a traffic information generation server, wherein the traffic information generation server is divided into arbitrary sections, and a unique ID is assigned to each section. Position information receiving means for receiving the immediately preceding position information from the in-vehicle device of each vehicle and the current position information which is the position information after a predetermined time has elapsed since entering the current map ID based on the map information; A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. Probe data collection vehicle specifying means and instruction means for instructing the specified vehicle to collect probe data, and the in-vehicle device of the specified vehicle is configured to generate the traffic information A position information transmitting means for transmitting the previous position information and the current position information to a server, and a setting for receiving a probe data collection instruction and setting a link ID corresponding to a probe data collection section Means for measuring the passing time of the corresponding link ID, calculating an average speed, a database for storing the calculated average speed and traffic conditions in association with each other, and collecting probe data using the database A detection means for detecting traffic information of the section, a link ID of the section where the probe data has been collected, time information when passing the section, and the detected traffic situation are transmitted to the traffic information generation server And a probe data collection system characterized by comprising a probe data transmission means.

  According to this invention, the position information receiving means of the traffic information generation server is divided into arbitrary sections, and based on the map information to which the unique ID for each section is attached, The position information and the current position information, which is the position information after a predetermined time has elapsed since entering the current map ID, are received, and the probe data collection vehicle specifying means receives the position information of the received latest map ID and the current position information. A map ID in the traveling direction is estimated from the position information of the map ID, a vehicle that is expected to pass the link ID corresponding to the probe data collection section is specified, and the instruction means sends probe data to the specified vehicle. Direct the collection. The position information transmission means of the in-vehicle device of the specified vehicle transmits the previous position information and the current position information to the traffic information generation server, and the setting means receives the probe data collection instruction, A link ID corresponding to the collection section is set. The calculating means measures the passing time of the corresponding link ID, calculates the average speed, and the detecting means uses a database that stores the calculated average speed and traffic conditions in association with each other, and traffic in the probe data collection section. Detect the situation. Then, the probe data transmission means transmits the link ID of the section in which the probe data is collected, the time information when the section is passed, and the detected traffic situation to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not, it is possible to prevent the same collection of travel data. In addition, since the in-vehicle device transmits the detected traffic situation to the traffic information generation server, the processing load on the traffic information generation server can be reduced.

  (4) The present invention proposes a probe data collection system characterized in that the probe data collection system of (3) has a plurality of vehicles specified by the probe data collection vehicle specifying means.

  According to this invention, the number of vehicles specified by the probe data collection vehicle specifying means is plural. In other words, because the target vehicle is an in-vehicle device such as a car navigation system that does not have a departure point, destination, travel route, estimated time of passage, etc., the necessary probe data can be set by using multiple vehicles. The collection probability can be increased.

  (5) The present invention is a probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server, wherein the traffic information generation server is divided into arbitrary sections, and each section is unique. Based on the map information to which the ID is attached, the position information immediately before and the current position information, which is the position information after a predetermined time has elapsed since entering the current map ID, are received from the in-vehicle device of each vehicle. The map ID in the traveling direction is estimated from the step 1 and the received location information of the latest map ID and the location information of the current map ID, and is expected to pass the link ID corresponding to the probe data collection section. A second step of identifying a certain vehicle; a third step of instructing the identified vehicle to collect probe data; and A fourth step of receiving a probe data collection instruction and setting a link ID corresponding to a probe data collection section; a fifth step of measuring a passing time of the corresponding link ID and calculating an average speed; A sixth step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the calculated average speed to the traffic information generation server; We propose a probe data collection method characterized by

  According to this invention, the traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the previous position information and the current map from the in-vehicle device of each vehicle. The current position information, which is position information after a predetermined time has elapsed since entering the ID, is received, and the map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID Then, a vehicle that is likely to pass the link ID corresponding to the probe data collection section is specified, and the specified vehicle is instructed to collect probe data. On the other hand, the in-vehicle device of the specified vehicle receives the probe data collection instruction, sets the link ID corresponding to the probe data collection section, measures the passing time of the corresponding link ID, and calculates the average speed. . And it transmits to the link ID of the section which collected probe data, the time information when passing the said section, the calculated average speed, and the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not used, it is possible to prevent duplicate collection of similar travel data.

  (6) The present invention is a probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server, wherein the traffic information generation server is divided into arbitrary sections, and each section is unique. Based on the map information to which the ID is attached, the position information immediately before and the current position information, which is the position information after a predetermined time has elapsed since entering the current map ID, are received from the in-vehicle device of each vehicle. The map ID in the traveling direction is estimated from the step 1 and the received location information of the latest map ID and the location information of the current map ID, and is expected to pass the link ID corresponding to the probe data collection section. A second step of identifying a certain vehicle; a third step of identifying and instructing the vehicle to collect probe data; and A fourth step of receiving a link data collection instruction, setting a link ID corresponding to a probe data collection section, a fifth step of measuring a passing time of the corresponding link ID and calculating an average speed; Using a database that stores the calculated average speed and traffic situation in association with each other, a sixth step of detecting the traffic situation in the probe data collection section, the link ID of the section in which the probe data was collected, Proposing a probe data collection method comprising: a seventh step of transmitting time information when passing through the section and the detected traffic situation to the traffic information generation server. .

  According to this invention, the traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the previous position information and the current map from the in-vehicle device of each vehicle. The current position information, which is position information after a predetermined time has elapsed since entering the ID, is received, and the map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID Then, a vehicle that is likely to pass the link ID corresponding to the probe data collection section is specified, and the specified vehicle is instructed to collect probe data. On the other hand, the in-vehicle device of the specified vehicle receives the probe data collection instruction, measures the passage time of the link ID corresponding to the probe data collection section, and calculates the average speed. Then, using the database that stores the calculated average speed and the traffic situation in association with each other, the traffic situation in the probe data collection section is detected, and the link ID of the section in which the probe data is collected and the passage pass through the section. The time information at the time and the detected traffic situation are transmitted to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not, it is possible to prevent the same collection of travel data. In addition, since the in-vehicle device transmits the detected traffic situation to the traffic information generation server, the processing load on the traffic information generation server can be reduced.

  (7) The present invention is a program for causing a computer to execute a probe data collection method in a probe data collection system including an in-vehicle device and a traffic information generation server, wherein the traffic information generation server is placed in an arbitrary section. Based on the map information that is divided and assigned a unique ID for each section, the position information immediately before the current vehicle ID is entered from the in-vehicle device of each vehicle and the position information after a predetermined time has elapsed. The first step of receiving certain current position information, the map ID in the traveling direction is estimated from the received position information of the most recent map ID and the position information of the current map ID, and the probe data collection section A second step of identifying a vehicle that is likely to pass a link ID corresponding to, and a third step of instructing the identified vehicle to collect probe data. And the vehicle-mounted device of the specified vehicle receives the probe data collection instruction and sets the link ID corresponding to the probe data collection section, and measures the passing time of the corresponding link ID. The traffic information generation server includes the fifth step of calculating the average speed, the link ID of the section where the probe data has been collected, the time information when passing the section, and the calculated average speed. A program for causing a computer to execute the sixth step of transmitting to the computer is proposed.

  According to this invention, the traffic information generation server is divided into arbitrary sections, and based on the map information to which each section is assigned a unique ID, the position information immediately before and the current position information from the in-vehicle device of each vehicle. The current position information, which is position information after a predetermined time has elapsed since entering the map ID, and the map ID in the traveling direction from the received position information of the latest map ID and the position information of the current map ID Is estimated, a vehicle that is expected to pass the link ID corresponding to the probe data collection section is specified, and the specified vehicle is instructed to collect probe data. On the other hand, the in-vehicle device of the specified vehicle receives the probe data collection instruction, sets the link ID corresponding to the probe data collection section, measures the passing time of the corresponding link ID, and calculates the average speed. . Then, the link ID of the section in which the probe data is collected, the time information when the section is passed, and the calculated average speed are transmitted to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not, it is possible to prevent the same collection of travel data.

  (8) The present invention is a program for causing a computer to execute a probe data collection method in a probe data collection system including an in-vehicle device and a traffic information generation server, wherein the traffic information generation server is placed in an arbitrary section. Based on the map information that has been divided and assigned a unique ID for each section, the current position information after the elapse of a predetermined time since entering the current map ID and the previous position information from the in-vehicle device of each vehicle The map ID in the traveling direction is estimated from the received first position information of the current map ID and the position information of the current map ID, and corresponds to the probe data collection section. A second step of identifying a vehicle likely to pass the link ID to be performed, and a third step of instructing the identified vehicle to collect probe data The vehicle-mounted device of the specified vehicle receives the probe data collection instruction, sets the link ID corresponding to the probe data collection section, and measures the passing time of the corresponding link ID. A fifth step of calculating an average speed, a sixth step of detecting a traffic situation in a probe data collection section using a database storing the calculated average speed and a traffic situation in association with each other, and the probe Causing the computer to execute a seventh step of transmitting the link ID of the section in which the data has been collected, the time information when the section is passed, and the detected traffic situation to the traffic information generation server. A program for this is proposed.

  According to this invention, the traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the position information immediately before and the current map ID from the in-vehicle device of each vehicle. Current position information that is position information after a lapse of a predetermined time from the time of entering, and the map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID Then, the vehicle that is likely to pass the link ID corresponding to the probe data collection section is specified, and the specified vehicle is instructed to collect the probe data. On the other hand, the in-vehicle device of the specified vehicle receives the probe data collection instruction, sets the link ID corresponding to the probe data collection section, measures the passing time of the corresponding link ID, and calculates the average speed To do. Then, using the database that stores the calculated average speed and the traffic situation in association with each other, the traffic situation in the probe data collection section is detected, and the link ID of the section in which the probe data is collected and the passage pass through the section. The time information at the time and the detected traffic situation are transmitted to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not, it is possible to prevent the same collection of travel data. In addition, since the in-vehicle device transmits the detected traffic situation to the traffic information generation server, the processing load on the traffic information generation server can be reduced.

  (9) The present invention is a program recording medium for storing a program for causing a computer to execute a probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server, the traffic information generation server However, based on the map information that is divided into arbitrary sections and given a unique ID for each section, a predetermined time has elapsed after entering the previous position information and the current map ID from the in-vehicle device of each vehicle The first step of receiving the current position information, which is the position information of the current map, the map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and the probe A second step of identifying a vehicle that is likely to pass a link ID corresponding to a data collection section, and probe data for the identified vehicle; A third step of instructing the collection, a fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section; The fifth step of measuring the passage time of the link ID to be calculated and calculating the average speed, the link ID of the section where the probe data was collected, the time information when the section is passed, and the calculated average A program recording medium for storing a program for causing a computer to execute a sixth step of transmitting the speed to the traffic information generation server is proposed.

  According to this invention, the traffic information generation server is divided into arbitrary sections, and based on the map information to which each section is assigned a unique ID, the position information immediately before and the current position information from the in-vehicle device of each vehicle. The current position information, which is position information after a predetermined time has elapsed since entering the map ID, and the map ID in the traveling direction from the received position information of the latest map ID and the position information of the current map ID Is estimated, a vehicle that is expected to pass the link ID corresponding to the probe data collection section is specified, and the specified vehicle is instructed to collect probe data. On the other hand, the in-vehicle device of the specified vehicle receives the probe data collection instruction, sets the link ID corresponding to the probe data collection section, measures the passing time of the corresponding link ID, and calculates the average speed. . Then, the link ID of the section in which the probe data is collected, the time information when the section is passed, and the calculated average speed are transmitted to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not, it is possible to prevent the same collection of travel data.

  (10) The present invention is a program recording medium for storing a program for causing a computer to execute a probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server, the traffic information generation server However, based on the map information that is divided into arbitrary sections and given a unique ID for each section, a predetermined time has elapsed after entering the previous position information and the current map ID from the in-vehicle device of each vehicle The first step of receiving the current position information, which is the position information of the current map, the map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and the probe A second step of identifying a vehicle that is likely to pass a link ID corresponding to a data collection section; A third step of instructing the collection, a fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section; The traffic condition of the probe data collection section is detected using the fifth step of measuring the passing time of the link ID to be calculated and calculating the average speed and a database that stores the calculated average speed and the traffic condition in association with each other. A sixth step of transmitting, to the traffic information generation server, a link ID of a section in which the probe data has been collected, time information when the section is passed, and the detected traffic situation The program recording medium which stores the program for making a computer perform these steps is proposed.

  According to this invention, the traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the position information immediately before and the current map ID from the in-vehicle device of each vehicle. Current position information that is position information after a lapse of a predetermined time from the time of entering, and the map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID Then, the vehicle that is likely to pass the link ID corresponding to the probe data collection section is specified, and the specified vehicle is instructed to collect the probe data. On the other hand, the in-vehicle device of the specified vehicle receives the probe data collection instruction, sets the link ID corresponding to the probe data collection section, measures the passing time of the corresponding link ID, and calculates the average speed To do. Then, using the database that stores the calculated average speed and the traffic situation in association with each other, the traffic situation in the probe data collection section is detected, and the link ID of the section in which the probe data is collected and the passage pass through the section. The time information at the time and the detected traffic situation are transmitted to the traffic information generation server. Therefore, since the probe data collection vehicle identification means identifies the probe data collection vehicle and collects the necessary probe data, the destination, travel route, estimated passage time, etc. are set in the in-vehicle device such as a car navigation system. Even when the target vehicle is not, it is possible to prevent the same collection of travel data. In addition, since the in-vehicle device transmits the detected traffic situation to the traffic information generation server, the processing load on the traffic information generation server can be reduced.

  According to the present invention, the same traveling data is collected in duplicate even in the case where the destination, the traveling route, the estimated passing time, etc. are targeted in advance by an in-vehicle device such as a car navigation system. It is possible to prevent the probe data from being reduced.

  In addition, since the probe data is collected by specifying the location of the link ID to be collected from the traffic information generation server to the in-vehicle device, there is an effect that the communication cost can be reduced.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Note that the constituent elements in the present embodiment can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the content of the invention described in the scope of claims is not limited by the description of the present embodiment.

<First Embodiment>
A first embodiment of a probe data collection system according to the present invention will be described with reference to FIGS.

<Configuration of probe data collection system>
As shown in FIG. 1, the probe data collection system according to the present embodiment is composed of in-vehicle devices 1a, 1b,..., 1n mounted on a plurality of vehicles, and a traffic information generation server 2. Are connected via the network 3. More specifically, the in-vehicle devices 1a, 1b,..., 1n are car navigation devices or the like, and a mobile terminal or the like can be used for communication with the traffic information generation server 2.

  Moreover, in this embodiment, the case where the destination setting using a car navigation apparatus etc. is not made in the vehicle is assumed. Therefore, as shown in FIG. 2, the map data is divided into arbitrary sections (in FIG. 2, nKM × nKm sections), IDs are assigned to the respective sections, and probe data to be collected is replaced with link ID data. It is carried out.

  The in-vehicle devices 1a, 1b,..., 1n collect predetermined probe data instructed from the traffic information generation server 2 and transmit it to the traffic information generation server 2. The traffic information generation server 2 identifies the vehicle based on the probe data to be collected and the vehicle position information, and prompts the user to collect necessary probe data.

<Configuration of in-vehicle equipment>
Next, the configuration of the in-vehicle device will be described with reference to FIG.

  As shown in FIG. 3, the in-vehicle device according to the present embodiment includes a receiving unit 11, a link ID setting unit 12, a position information detecting unit 13, an average speed calculating unit 14, a time information detecting unit 15, and a transmission. The unit 16 is configured.

The receiving unit 11 receives a probe data collection instruction from the traffic information generation server 2. The link ID setting unit 12 sets a link ID corresponding to a probe data collection section based on a probe data collection instruction. The position information detection unit 13 has a car navigation function, and detects the previous position information and the current position information by GPS or the like. The current position information is assumed to be position information after a predetermined time has elapsed since entering the current map ID in order to estimate the traveling direction.

  The average speed calculation unit 14 measures the passage time of the corresponding link ID and calculates the average speed from the travel distance. The time information detection unit 15 detects time information when traveling in the probe data collection section by a clock function.

  The transmission unit 16 transmits the previous position information and the current position information to the traffic information generation server 2, and the link ID of the section in which the probe data is collected and the time information when the section is passed. , And send the calculated average speed.

<Configuration of traffic information generation server>
As shown in FIG. 4, the traffic information generation server according to the present embodiment includes a reception unit 21, a collection vehicle identification unit 22, a transmission unit 23, and a probe database (DB) 24.

  The receiving unit 21 receives the previous position information and the current position information from the in-vehicle devices 1a, 1b,..., 1n of each vehicle, and the specified in-vehicle devices 1a, 1b,. The link ID of the section where the probe data is collected, the time information when the section is passed, and the calculated average speed are received.

  The collection vehicle specifying unit 22 specifies a vehicle that is likely to pass through a link ID corresponding to the probe data collection section based on the received position information. The vehicle that is expected to pass the link ID corresponding to the probe data collection section is determined by estimating the traveling direction from the position information of the latest map ID and the current position information. Moreover, the collection vehicle specific | specification part 22 may specify a some vehicle at once. In other words, since it is intended for vehicles with in-vehicle devices such as car navigation systems that do not have a departure point, destination, travel route, estimated time of passage, etc., the necessary probe data can be obtained by making the number of vehicles to be specified multiple. The collection probability can be increased.

  The transmission unit 23 instructs the identified vehicle to specify a plurality of link IDs that are candidates to be collected in the map ID in which the vehicle is expected to travel, and transmits information indicating that probe data collection is instructed. The probe data database (DB) 24 is a storage device that stores a link ID of a section in which the probe data received by the receiving unit 21 is collected, time information when the section is passed, and a calculated average speed. is there. Based on the information stored in the probe data database (DB) 24, the traffic information generation server generates and updates traffic information by a traffic information generation function (not shown).

<Processing of probe data collection system>
Next, processing of the probe data collection system will be described with reference to FIG.

  First, the receiving unit 21 of the traffic information generating server 2 is divided into arbitrary sections, and on-vehicle devices 1a, 1b,. The position information immediately before 1n and the current position information, which is the position information after a predetermined time has elapsed since entering the current map ID, are received (step S101).

  The collection vehicle specifying unit 22 of the traffic information generation server 2 estimates the traveling direction from the position information of the latest map ID and the current position information based on the received position information, and corresponds to a probe data collection section. A vehicle that is likely to pass the link ID is identified (step S102), and the transmission unit 23 instructs the identified vehicle to specify a plurality of link IDs that are candidates to be collected in the map ID in which the vehicle is expected to travel. The probe data collection is instructed (step S103).

  On the other hand, the receiving unit 11 of the specified in-vehicle device of the vehicle receives the probe data collection instruction, and the link ID setting unit 12 sets the link ID corresponding to the probe data collection section (step S104). Then, the average speed calculation unit 14 measures the passing time of the corresponding link ID, calculates the average speed (step S105), and the transmission unit 16 collects the probe data and the link ID of the section. The time information when the vehicle passes and the calculated average speed are transmitted to the traffic information generation server (step S106).

  As described below, according to the present embodiment, the collection vehicle specifying unit estimates the traveling direction from the position information of the latest map ID and the current position information based on the received position information, and Even if the target vehicle, the route, the estimated time of passage, etc. are targeted for in-vehicle devices such as car navigation systems, because the data collection vehicle is identified and the necessary probe data is collected Thus, it is possible to prevent the duplicate collection of the same traveling data.

<Second Embodiment>
A second embodiment of the probe data collection system according to the present invention will be described with reference to FIGS. 6 and 7. The present embodiment has a system configuration similar to that of the first embodiment, but the functions of the in-vehicle device have functions different from those of the first embodiment, and therefore the differences will be described.

<Configuration of in-vehicle equipment>
The in-vehicle device according to the present embodiment further includes a traffic condition detection unit 17 and a traffic condition database (DB) 18 with respect to the in-vehicle device according to the first embodiment.

  The traffic situation detection unit 17 detects a traffic situation corresponding to the average speed calculated by the average speed calculation unit 14 from the traffic situation database (DB) 18. Here, the traffic situation database (DB) 18 is a database that stores the average speed of the vehicle and the traffic situation in association with each other. By adopting such a configuration, the processing load of the traffic information generation server can be reduced.

<Processing of probe data collection system>
Next, processing of the probe data collection system will be described with reference to FIG.

  First, the receiving unit 21 of the traffic information generation server 2 is divided into arbitrary sections, and on-vehicle equipment 1a, 1b,. The position information immediately before 1n and the current position information that is the position information after a predetermined time has elapsed since entering the current map ID are received (step S201).

  The collection vehicle specifying unit 22 of the traffic information generation server 2 estimates the traveling direction from the position information of the latest map ID and the current position information based on the received position information, and corresponds to a probe data collection section. A vehicle that is likely to pass the link ID is identified (step S202), and the transmission unit 23 instructs the identified vehicle to specify a plurality of link IDs that are candidates to be collected in the map ID in which the vehicle is expected to travel. The probe data collection is instructed (step S203).

  On the other hand, the receiving unit 11 of the specified in-vehicle device of the vehicle receives the collection instruction for the probe data, and the link ID setting unit 12 sets the link ID corresponding to the probe data collection section (step S204).

  Then, the average speed calculation unit 14 measures the passing time of the corresponding link ID, calculates the average speed (step S205), and uses the database 18 that stores the calculated average speed and the traffic situation in association with each other, using the probe The traffic situation in the data collection section is detected (step S206). The transmission unit 16 transmits the link ID of the section in which the probe data is collected, the time information when the section is passed, and the detected traffic situation to the traffic information generation server 2 (Step S207).

  As described below, according to the present embodiment, the collection vehicle specifying unit estimates the traveling direction from the position information of the latest map ID and the current position information based on the received position information, and Even if the target vehicle, the route, the estimated time of passage, etc. are targeted for in-vehicle devices such as car navigation systems, because the data collection vehicle is identified and the necessary probe data is collected Thus, it is possible to prevent the duplicate collection of the same traveling data.

  Next, the case where the traveling direction of the vehicle is estimated based on the map ID of the departure point and the case where the traveling direction of the vehicle is estimated based on the immediately preceding map ID will be described with reference to FIGS.

  FIG. 8 shows a method of estimating the traveling direction of the vehicle based on the map ID of the departure point. In the figure, white circles indicate starting points, and gray circles indicate position information transmitted to the server. A dotted arrow indicates a travel route, a thick arrow indicates a link ID to be collected, and a wide arrow indicates an estimated traveling direction.

  In the method of estimating the traveling direction of the vehicle based on the map ID of the departure point, since the traveling direction is estimated based on the departure point and the position information transmitted to the server, as can be seen from FIG. There is a problem that it is low.

  On the other hand, in the method of estimating the traveling direction of the vehicle based on the map ID immediately before the present invention is adopted, as shown in FIG. 9, the traveling route indicated by the dotted arrow and the estimated traveling direction indicated by the arrow with width are Small error. Therefore, since the prediction accuracy for the next map ID is high, the link ID to be collected can be efficiently collected.

  It should be noted that these programs are recorded in a computer-readable recording medium, and the programs recorded in the recording medium are read and executed by each of the in-vehicle device and the traffic information generation server (both are computer systems). A probe data collection system can be realized. The computer system here includes an OS and hardware such as peripheral devices.

  Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW (World Wide Web) system is used. The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having information for transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above with the combination of the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  The following embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes designs and the like that do not depart from the gist of the present invention.

It is a block diagram of the probe data collection system which concerns on embodiment of this invention. It is a figure regarding the division of the map data which concerns on embodiment of this invention. It is a lineblock diagram of in-vehicle equipment concerning a 1st embodiment. It is a lineblock diagram of the traffic information generation server concerning a 1st embodiment. It is a processing flow of the probe data collection system which concerns on 1st Embodiment. It is a block diagram of the vehicle equipment which concerns on 2nd Embodiment. It is a processing flow of the probe data collection system which concerns on 2nd Embodiment. It is a conceptual diagram in the case of estimating the advancing direction of a vehicle by map ID of a departure point. It is a conceptual diagram in the case of estimating the advancing direction of a vehicle by map ID immediately before.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b, ..., 1n ... Car equipment 2 ... Traffic information generation server 3 ... Network 11, 21 ... Receiving part 12 ... Link ID setting part 13 ... Position information detection Unit 14 ... Average speed calculation unit 15 ... Time information detection unit 16 ... Transmission unit 17 ... Traffic situation detection unit 18 ... Traffic situation database 22 ... Collected vehicle identification unit 23 ... Transmitter 24 ... Probe data database (DB)

Claims (10)

A probe data collection system comprising an in-vehicle device and a traffic information generation server,
The traffic information generation server is
Based on the map information that is divided into arbitrary sections and assigned a unique ID for each section, the position after the predetermined time has passed since the vehicle position information and the current map ID from the vehicle-mounted device of each vehicle. Position information receiving means for receiving current position information as information;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. Probe data collection vehicle identification means;
Instruction means for instructing the identified vehicle to collect probe data;
With
The in-vehicle device of the specified vehicle is
Position information transmitting means for transmitting the previous position information and the current position information to the traffic information generation server;
Setting means for receiving a probe data collection instruction and setting a link ID corresponding to a probe data collection section;
A calculating means for measuring a passing time of the corresponding link ID and calculating an average speed;
Probe data transmitting means for transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the calculated average speed to the traffic information generation server;
A probe data collection system comprising:   2. The probe data collection system according to claim 1, wherein the number of vehicles specified by the probe data collection vehicle specifying means is plural. A probe data collection system comprising an in-vehicle device and a traffic information generation server,
The traffic information generation server is
Based on the map information that is divided into arbitrary sections and assigned a unique ID for each section, the position after the predetermined time has passed since the vehicle position information and the current map ID from the vehicle-mounted device of each vehicle. Position information receiving means for receiving current position information as information;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. Probe data collection vehicle identification means;
Instruction means for instructing the identified vehicle to collect probe data;
With
The in-vehicle device of the specified vehicle is
Position information transmitting means for transmitting the previous position information and the current position information to the traffic information generation server;
Setting means for receiving a probe data collection instruction and setting a link ID corresponding to a probe data collection section;
A calculating means for measuring a passing time of the corresponding link ID and calculating an average speed;
A database for storing the calculated average speed and traffic conditions in association with each other;
Detecting means for detecting traffic information in the probe data collection section using the database;
Probe data transmission means for transmitting the link ID of the section where the probe data has been collected, time information when the section is passed, and the detected traffic situation to the traffic information generation server;
A probe data collection system comprising:   4. The probe data collection system according to claim 3, wherein the number of vehicles specified by the probe data collection vehicle specifying means is plural. A probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server,
The traffic information generation server is divided into arbitrary sections, and based on the map information to which each section has a unique ID, the previous position information and the current map ID are entered from the in-vehicle device of each vehicle. A first step of receiving current position information that is position information after elapse of a predetermined time;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. A second step;
A third step for instructing the identified vehicle to collect probe data;
A fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section;
A fifth step of measuring a passing time of the corresponding link ID and calculating an average speed;
A sixth step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the calculated average speed to the traffic information generation server;
A probe data collection method comprising: A probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server,
The traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the previous position information and the current map ID are entered from the in-vehicle device of each vehicle. A first step of receiving current position information that is position information after elapse of a predetermined time;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. A second step;
A third step of specifying and instructing the vehicle to collect probe data;
A fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section;
A fifth step of measuring a passing time of the corresponding link ID and calculating an average speed;
A sixth step of detecting the traffic situation of the probe data collection section using a database that stores the calculated average speed and the traffic situation in association with each other;
A seventh step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the detected traffic situation to the traffic information generation server;
A probe data collection method comprising: A program for causing a computer to execute a probe data collection method in a probe data collection system comprising an in-vehicle device and a traffic information generation server,
The traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is attached to each section, the previous position information and the current map ID are obtained from the in-vehicle device of each vehicle. A first step of receiving current position information that is position information after a predetermined time has elapsed since entering;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. A second step;
A third step for instructing the identified vehicle to collect probe data;
A fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section;
A fifth step of measuring a passing time of the corresponding link ID and calculating an average speed;
A sixth step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the calculated average speed to the traffic information generation server;
A program that causes a computer to execute. A program for causing a computer to execute a probe data collection method in a probe data collection system including an in-vehicle device and a traffic information generation server,
The traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the previous position information and the current map ID are entered from the in-vehicle device of each vehicle. A first step of receiving current position information that is position information after elapse of a predetermined time;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. A second step;
A third step for instructing the identified vehicle to collect probe data;
A fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section;
A fifth step of measuring a passing time of the corresponding link ID and calculating an average speed;
A sixth step of detecting the traffic situation of the probe data collection section using a database that stores the calculated average speed and the traffic situation in association with each other;
A seventh step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the detected traffic situation to the traffic information generation server;
A program that causes a computer to execute. A program recording medium for storing a program for causing a computer to execute a probe data collection method in a probe data collection system including an in-vehicle device and a traffic information generation server,
The traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the previous position information and the current map ID are entered from the in-vehicle device of each vehicle. A first step of receiving current position information that is position information after elapse of a predetermined time;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. A second step;
A third step for instructing the identified vehicle to collect probe data;
A fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section;
A fifth step of measuring a passing time of the corresponding link ID and calculating an average speed;
A sixth step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the calculated average speed to the traffic information generation server;
A program recording medium for storing a program for causing a computer to execute. A program recording medium for storing a program for causing a computer to execute a probe data collection method in a probe data collection system including an in-vehicle device and a traffic information generation server,
The traffic information generation server is divided into arbitrary sections, and based on the map information to which a unique ID is assigned for each section, the previous position information and the current map ID are entered from the in-vehicle device of each vehicle. A first step of receiving current position information that is position information after elapse of a predetermined time;
A map ID in the traveling direction is estimated from the received position information of the latest map ID and the position information of the current map ID, and a vehicle that is expected to pass through the link ID corresponding to the probe data collection section is specified. A second step;
A third step of specifying and instructing the vehicle to collect probe data;
A fourth step in which the in-vehicle device of the identified vehicle receives the probe data collection instruction and sets a link ID corresponding to a probe data collection section;
A fifth step of measuring a passing time of the corresponding link ID and calculating an average speed;
A sixth step of detecting the traffic situation of the probe data collection section using a database that stores the calculated average speed and the traffic situation in association with each other;
A seventh step of transmitting the link ID of the section in which the probe data has been collected, time information when the section is passed, and the detected traffic situation to the traffic information generation server;
A program recording medium for storing a program for causing a computer to execute.

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