JP2013207451A - Mobile terminal device and information collection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an increased communication amount for information transmission/reception of probe information between a mobile terminal device and an information collection server, an increased analysis processing load in the information collection server and deteriorated analysis accuracy.SOLUTION: The mobile terminal device includes a location measurement unit for measuring the current location and a determination unit for determining whether or not a preset condition is satisfied in the mobile terminal device. On determination that the preset condition is satisfied, the mobile terminal device transmits probe information including the information indicative of the measured current location. On determination that the preset condition is not satisfied, the mobile terminal device does not transmit the probe information.

Description

  The present invention relates to a technique for transmitting and receiving probe information including information indicating a current position between a portable terminal device capable of measuring a current position and an information collection server.

  Currently, car navigation systems are installed in many automobiles. The car navigation system uses the current position measured using a positioning system such as GPS (Global Positioning System) to provide route guidance and display of the vehicle position. Conventionally, by collecting probe information including information indicating the current position acquired by the car navigation system in an information collection server of the information collection center, and analyzing the probe information in the information collection server, the traffic situation of the automobile (for example, the traffic jam situation) ) Has been proposed. Furthermore, in recent years, GPS receivers are being installed not only in automobiles but also in various portable terminal devices such as cellular phones, portable game machines, PND (Personal Navigation Device), and PDA (Personal Digital Assistant). It has been proposed to use probe information generated by a terminal device to perform more detailed probe information analysis for various purposes as well as grasping traffic conditions of automobiles (see, for example, Patent Document 1). .

JP 2011-119990 A

  Depending on the purpose of the probe information analysis, only the probe information generated by some portable terminal devices among the portable terminal devices capable of generating / transmitting probe information is required. The generated probe information may not be necessary. For example, when the purpose is to grasp the traffic situation of a car, probe information from a mobile terminal device of a user riding on a car traveling on a road is required, but the mobile phone of a user walking Probe information from the terminal device is not necessary. Sending unnecessary probe information from the mobile terminal device to the information collection server in light of the purpose of the analysis is not preferable because it leads to an increase in communication volume, an increase in analysis processing load on the information collection server, and a decrease in analysis accuracy. .

  Considering these problems, the problem to be solved by the present invention is to increase the amount of communication for transmitting / receiving probe information between the mobile terminal device and the information collection server, increase the analysis processing load by the information collection server, and analyze The object is to provide a technique capable of suppressing a decrease in accuracy.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

Application Example 1 A mobile terminal device, a positioning unit that measures a current position, a determination unit that determines whether a preset condition for the mobile terminal device is satisfied, and the condition is satisfied If it is determined that the condition is satisfied, probe information including information indicating the measured current position is transmitted. If it is determined that the condition is not satisfied, information transmission that does not transmit the probe information is performed. A portable terminal device.

  In this mobile terminal device, when it is determined that a preset condition is satisfied, transmission of probe information is executed. When it is determined that the condition is not satisfied, Since transmission is not executed, by setting conditions according to the purpose of analyzing probe information, unnecessary probe information is not transmitted for that purpose. Therefore, in this portable terminal device, it is possible to suppress an increase in analysis processing load and a decrease in analysis accuracy of the information collecting device that analyzes probe information, and to transmit and receive probe information between the portable terminal device and the information collecting device. Increase in the amount of communication can be suppressed.

Application Example 2 In the mobile terminal device according to Application Example 1, the determination unit includes a moving unit determination unit that determines a moving unit of the mobile terminal device, and the condition includes movement of the mobile terminal device A portable terminal device, wherein the means is a preset specific moving means.

  In this portable terminal device, unnecessary probe information is not transmitted for the analysis of probe information for the purpose of grasping the traffic situation of the specific moving means, so that the processing load when analyzing the probe information for the purpose is increased. And a decrease in analysis accuracy can be suppressed.

[Application Example 3] The mobile terminal device according to Application Example 2, wherein the moving means determination unit determines that the moving means of the mobile terminal device is unknown to moving means other than the specific moving means and the specific moving means. When the determination unit determines that the moving unit of the mobile terminal device is unknown, the determination unit determines the history of the determination result of the moving unit of the mobile terminal device and the measurement result of the current position. A mobile terminal device including a moving means estimating unit that estimates whether or not the moving means of the mobile terminal device is the specific moving means based on at least one of the above history.

  Even if it is determined that the moving means of the mobile terminal device is unknown, if the moving means is estimated to be an automobile, the generated probe information is used to grasp the traffic situation of the specific moving means. It is likely to be useful for analyzing target probe information. In this portable terminal device, when it is estimated that the moving means is an automobile, it is determined that the condition is satisfied and the probe information is transmitted. It is possible to collect more probe information that is highly likely to be useful for analyzing the probe information, and it is possible to improve the quality of analysis of such probe information.

Application Example 4 The portable terminal device according to Application Example 3, wherein the moving unit estimation unit has a history of determination results of the moving unit of the portable terminal device, and the moving unit of the portable terminal device is unknown. If the moving means of the mobile terminal device is a history determined to be the specific moving means in the second period immediately after the first period determined as, the mobile terminal in the first period A mobile terminal device that estimates that the moving means of the device is the specific moving means.

  In this portable terminal device, it is possible to accurately estimate whether or not the moving means is the specific moving means.

Application Example 5 In the mobile terminal device according to Application Example 4, in the case where the length of the first period is equal to or greater than a preset threshold, the moving unit estimation unit A portable terminal device that estimates that the moving means of the portable terminal device in the first period is not the specific moving means regardless of the determination result in the period.

  In this portable terminal device, it is possible to estimate whether or not the moving means is the specific moving means with higher accuracy.

[Application Example 6] The mobile terminal device according to Application Example 3, wherein the moving unit estimation unit determines that the moving unit of the mobile terminal device is unknown. The mobile terminal device that estimates that the moving means of the mobile terminal device in the first period is the specific moving device when the moving distance of the mobile terminal device is greater than or equal to a preset threshold.

  In this portable terminal device, it is possible to accurately estimate whether or not the moving means is the specific moving means.

[Application Example 7] The mobile terminal device according to any one of Application Example 3 to Application Example 6, wherein the moving unit estimation unit performs the estimation according to an algorithm, and the mobile terminal device further executes the algorithm. A portable terminal device comprising: an algorithm management unit that receives information to be specified and updates the algorithm used for the estimation based on the received information specifying the algorithm.

  In this portable terminal device, the algorithm used for the estimation process can be optimized, and the quality of the probe information analysis can be further improved through the improvement of the accuracy of the estimation process.

Application Example 8 The mobile terminal device according to Application Example 1, wherein the condition is that the measured current position is within a preset geographical range.

  In this portable terminal device, probe information unnecessary for analyzing probe information for the purpose of grasping the distribution status of portable terminal devices within a preset geographical range is not transmitted. An increase in processing load and a decrease in analysis accuracy during information analysis can be suppressed.

[Application Example 9] The mobile terminal device according to any one of Application Example 1 to Application Example 8, further comprising: receiving information specifying the condition, and determining the condition based on the received information specifying the condition A portable terminal device comprising a condition management unit for updating.

  In this portable terminal device, optimum conditions can be set according to the purpose of analyzing probe information, and probe information analysis for various purposes can be realized with high accuracy and efficiency.

Application Example 10 An information collection system including a mobile terminal device and an information collection device connected to each other via a network, the mobile terminal device including a positioning unit that measures a current position, and the mobile terminal device A moving means discriminating section for discriminating whether the moving means is a preset specific moving means, a moving means other than the specific moving means or unknown, current position information indicating the measured current position, and the A transmitter that transmits probe information including moving means information indicating a determination result of the moving means of the portable terminal device to the information collecting device, wherein the information collecting device transmits the probe transmitted from the portable terminal device When the determination result indicated by the receiving unit that receives the information and the moving unit information included in the probe information is a determination result that the moving unit is unknown, Based on at least one of a determination result history indicated by the movement means information included in the probe information and a current position measurement result history indicated by the current position information, the movement means of the mobile terminal device is the specific movement means. When the moving means estimating unit for estimating whether or not the moving means of the portable terminal device is the specific moving means, the probe information transmitted from the portable terminal device is stored in a specific storage area. And an information storage control unit that does not store the probe information transmitted from the portable terminal device in the specific storage area when the moving unit of the portable terminal device is not the specific moving unit. Collection system.

  In this information collection system, when it is determined that the moving means of the portable terminal device is the specific moving means in the portable terminal device, the information collecting device stores the probe information transmitted from the portable terminal device in a specific storage area. Store. Furthermore, even if it is determined that the mobile means of the mobile terminal device is unknown in the mobile terminal device, the information collection device can detect from the mobile terminal device if the mobile means is estimated to be an automobile. The transmitted probe information is stored in a specific storage area. Therefore, this information collection system can collect more probe information that is likely to be useful for analyzing probe information for the purpose of grasping the traffic situation of a specific moving means. The quality of information analysis can be improved.

  Note that the present invention can be realized in various modes. For example, a mobile terminal device, an information transmission method and device, an information collection system including the mobile terminal device and an information collection server, these devices, methods, It can be realized in the form of a computer program or the like for realizing the system. Further, these computer programs may be recorded on a computer-readable recording medium (for example, a flexible disk, a CD-ROM, a DVD-ROM, a magneto-optical disk, a memory card, a hard disk, etc.).

It is explanatory drawing which shows schematic structure of the probe information collection system 10 in 1st Example of this invention. It is explanatory drawing which shows an example of probe information. 4 is an explanatory diagram showing a flow of probe information collection processing in the probe information collection system 10. FIG. It is explanatory drawing which shows an example of the moving means estimation method based on the log | history of the discrimination result of a moving means. It is explanatory drawing which shows an example of the moving means estimation method based on the log | history of the measurement result of a present position. It is explanatory drawing which shows the flow of the probe information collection process in 2nd Example. It is explanatory drawing which shows the flow of the probe information collection process in 3rd Example.

Next, embodiments of the present invention will be described in the following order based on examples.
A. First embodiment:
A-1. Configuration of probe information collection system:
A-2. Probe information collection processing:
B. Second embodiment:
C. Third embodiment:
D. Variations:

A. First embodiment:
A-1. Configuration of probe information collection system:
FIG. 1 is an explanatory diagram showing a schematic configuration of a probe information collection system 10 according to the first embodiment of the present invention. The probe information collection system 10 of this embodiment includes an information collection server 100 and a mobile phone 200 as a mobile terminal device. Although only one mobile phone 200 is shown in FIG. 1, the probe information collection system 10 may include a plurality of mobile phones 200.

  The mobile phone 200 includes a GPS receiver 201, a display panel 202, an audio output unit 203, an acceleration sensor 204, a wireless communication circuit 205, an operation unit 206, a main control unit 210, and a call control unit 220. I have.

  The GPS receiver 201 receives radio waves transmitted from artificial satellites constituting a GPS (Global Positioning System) and measures the current position (latitude, longitude) and height. The display panel 202 includes a liquid crystal display and a drive circuit that drives the liquid crystal display. The display panel 202 is not limited to a liquid crystal display, and various display devices such as an organic EL display can be used. The audio output unit 203 includes a speaker for outputting audio, a circuit for driving the speaker, and the like. The acceleration sensor 204 detects the acceleration of the mobile phone 200. The wireless communication circuit 205 wirelessly performs data communication or voice communication with the base station BS. The operation unit 206 is an input device including a group of buttons such as a numeric keypad 206a and a cursor key 206b. The call control unit 220 is a circuit that performs incoming calls and calls for voice calls, conversion of voice signals and electrical signals, and the like.

  The main control unit 210 controls each unit of the mobile phone 200. The main control unit 210 includes a CPU 211, a RAM 212, and a ROM 213. The CPU 211 implements a function for executing various processes described later by loading a program stored in the ROM 213 into the RAM 212 and executing the program. For example, the main control unit 210 controls the display panel 202 to display a map image, a recommended route, a current position, and the like. Further, the main control unit 210 controls the wireless communication circuit 205 to collect information on the Internet INT via the base station BS (more specifically, via the transmission / reception antenna, the base station BS, and the exchange). Communicate with the server 100.

  Further, the main control unit 210 determines whether the moving means of the mobile phone 200 (the user) is an automobile based on a signal (sensor detection value) from the acceleration sensor 204 (that is, whether the user of the mobile phone 200 is in the automobile). ), Walking (that is, whether the user of the mobile phone 200 is walking) or unknown. For example, when the main control unit 210 detects acceleration or deceleration exceeding a preset threshold value via the acceleration sensor 204, the main control unit 210 determines that the moving means is an automobile. Further, when the main control unit 210 detects vertical movement with a substantially constant cycle via the acceleration sensor 204, it determines that the moving means is walking. Further, the main control unit 210, when the signal from the acceleration sensor 204 does not correspond to either the condition for determining that the moving means is an automobile or the condition for determining that the moving means is walking, It is determined that the moving means is unknown.

  Further, the main control unit 210 generates probe information including position information indicating the current position based on the current position measured by the GPS receiver 201. FIG. 2 is an explanatory diagram illustrating an example of probe information. As shown in FIG. 2, in this embodiment, the probe information includes a terminal ID for identifying each mobile phone 200, position information indicating the current position (latitude and longitude) of the mobile phone 200, and the mobile phone 200. Height information indicating the current altitude, road ID identifying the road where the mobile phone 200 is located, time information indicating the time when the current position was measured, and moving means indicating the moving means determined as described above Information, information indicating a signal (detected value) from the acceleration sensor 204, and a priority flag indicating a priority in the analysis processing by the information collection server 100 are included.

  The terminal ID is stored in a specific storage area of the mobile phone 200. The road ID is an ID given to each road in road data included in map data included in the mobile phone 200 and / or the information collection server 100. The road where the mobile phone 200 is located is specified by the main control unit 210 correcting the current position measured by the GPS receiver 201 to a position on the road by a known matching process. The priority is set in advance in the mobile phone 200. The probe information used in the present embodiment only needs to include at least the terminal ID, position information, time information, and moving means information, and other information can be omitted as appropriate. The correction destination of the current position by the matching process is not limited to the position on the road. For example, when a route is set, the main control unit 210 may correct the current position measured by the GPS receiver 201 to a position on the route by a known matching process.

  The information collection server 100 (FIG. 1) includes a communication unit 102 that communicates with the mobile phone 200 via the Internet INT, a control unit 104 that includes a CPU, a RAM, and a ROM, and a storage device 105 that stores information. It has. The storage device 105 is constituted by a hard disk device, for example. In the storage device 105, a probe information database (DB) 103 is constructed.

  The control unit 104 of the information collection server 100 stores the probe information transmitted from the mobile phone 200 and received via the communication unit 102 in the storage device 105 as a record of the probe information database 103 and the stored probe information. Perform an analysis. As described above, the probe information includes information indicating the current position measured by the mobile phone 200 using the GPS receiver 201. The control part 104 can grasp | ascertain the traffic condition of a motor vehicle, for example by analyzing the some probe information received from each mobile telephone 200 contained in the probe information collection system 10. FIG.

A-2. Probe information collection processing:
FIG. 3 is an explanatory diagram showing the flow of probe information collection processing in the probe information collection system 10. The probe information collection process is a process in which the information collection server 100 collects probe information generated by the mobile phone 200 as the mobile terminal device. The probe information collection process of the present embodiment is aimed at grasping the traffic situation of the automobile. Therefore, when the moving means of the mobile phone 200 is an automobile, the probe information generated by the mobile phone 200 is collected by the information collection server 100, and when the moving means is not an automobile, the probe information is not collected. The automobile as the moving means in the present embodiment corresponds to the specific moving means in the claims.

  First, the main control unit 210 of the mobile phone 200 measures the current position of the mobile phone 200 using the GPS receiver 201 at a preset timing (step S110). The timing for measuring the current position can be arbitrarily set, for example, once per second. Next, the main control unit 210 uses the acceleration sensor 204 to determine whether the moving means of the mobile phone 200 is an automobile, a walk, or an unknown (step S130). At this time, the main control unit 210 functions as a moving unit determination unit and a determination unit in the claims. The main control unit 210 stores a history of determination results of the moving means of the mobile phone 200 in a specific storage area.

  When it is determined that the moving means is an automobile in the determination of the moving means (step S130), the main control unit 210 creates probe information based on the measured current position, and uses the wireless communication circuit 205 to probe. Information is transmitted to the information collection server 100 (step S160). Thereafter, the main control unit 210 repeatedly executes the processing after the measurement of the current position at the next timing (step S110). On the other hand, when it is determined that the moving means is walking in the determination of the moving means, the main control unit 210 measures the current position (step (step S160)) at the next timing without transmitting the probe information (step S160). S110) and subsequent processes are repeated in the same manner. Note that the execution order of the current position measurement (step S110) and the moving means determination (step S130) may be reversed. Further, the execution frequency of the current position measurement and the moving means determination need not be the same.

  On the other hand, when it is determined that the moving means is unknown in the determination of the moving means (step S130), the main control unit 210 estimates whether the moving means of the mobile phone 200 is an automobile (step S150). ). At this time, the main control unit 210 functions as a moving means estimation unit and a determination unit in the claims. The estimation by the main control unit 210 is executed based on a history of determination results of the moving means of the mobile phone 200. FIG. 4 is an explanatory diagram illustrating an example of a moving means estimation method based on a history of determination results of moving means. First, the main control unit 210 determines whether the latest moving means is an automobile or a walk with reference to a history of determination results. The latest moving means is a determination result other than unknown (that is, an automobile or a walk) issued in the most recent period of the period determined to be unknown in the determination of the moving means of the mobile phone 200. Generally, the true moving means when it is determined that the moving means is unknown is the same as the most recent moving means as long as the length of the period during which the moving means is unknown (hereinafter referred to as “unknown period”) is somewhat short. It is thought that it is often. Therefore, the main control unit 210 sets the length of the unknown period in advance when the latest moving means is an automobile (that is, the determination result of the moving means has changed from “automobile” to “unknown”). If it is shorter than the set threshold value Tth, it is estimated that the moving means is an automobile. On the other hand, the main control unit 210 determines that the latest moving means is an automobile, but the length of the unknown period is equal to or greater than a preset threshold Tth, and the nearest moving means is a walking (that is, the moving means). In the case where the determination result of “walk” changes to “unknown”), it is estimated that the moving means is not an automobile. In this way, it is possible to accurately estimate whether or not the moving means of the mobile phone 200 is an automobile. The unknown period corresponds to a first period in the claims, and the most recent period corresponds to a second period in the claims.

  Note that the estimation of the moving means (step S150) can also be executed based on the history of the measurement result of the current position of the mobile phone 200. FIG. 5 is an explanatory diagram showing an example of a moving means estimation method based on a history of measurement results of the current position. The main control unit 210 calculates a movement distance (that is, average speed) per unit time in the unknown period based on the measurement result history of the current position of the mobile phone 200, and the calculated value is equal to or greater than a preset threshold value Vth. In this case, the moving means is estimated to be an automobile, and when the calculated value is smaller than a preset threshold value Vth, it is estimated that the moving means is not an automobile. Even in this way, it is possible to accurately estimate whether or not the moving means of the mobile phone 200 is an automobile.

  Further, the estimation of the moving means (step S150) is a combination of the estimation method based on the history of the determination result of the moving means shown in FIG. 4 and the estimation method based on the history of the measurement result of the current position shown in FIG. It may be executed according to the method described above. That is, only when it is estimated that the moving means is an automobile by both estimation methods, the moving means is finally estimated to be an automobile, and the moving means is not an automobile by either or both estimation methods. If estimated, it may be estimated that the moving means is not an automobile in the end. In this way, it is possible to suppress the occurrence of a situation where the moving means of the mobile phone 200 is estimated to be an automobile when the true moving means is not an automobile.

  Further, the estimation of the moving means (step S150) can be executed based on the road type. For example, the main control unit 210 identifies the road on which the mobile phone 200 is located by correcting the current position measured by the GPS receiver 201 to a position on the road by a known matching process, and identifies the road of the identified road. If the type is an automobile-only road, the moving means is estimated to be an automobile, and if the identified road type is a road where the automobile cannot pass, the moving means is estimated not to be an automobile.

  Note that the estimation of the moving means (step S150) may be executed based on position information of one positioning point (current position measurement result), or may be executed based on position information of a plurality of positioning points. Good.

  When the main control unit 210 determines that the moving means is unknown in the determination of the moving means (step S130), and the moving means is estimated to be an automobile in the estimation of the moving means (step S150), Probe information is transmitted to the information collection server 100 (step S160). Thereafter, the main control unit 210 repeatedly executes the processing after the measurement of the current position at the next timing (step S110). On the other hand, when it is estimated that the moving means is not a car in the estimation of the moving means (step S150), the main control unit 210 does not transmit the probe information (step S160), and the current position at the next timing. The processes after the measurement (step S110) are repeated in the same manner.

  The control unit 104 of the information collection server 100 receives the probe information transmitted from the mobile phone 200 (step S210), and stores the received probe information as a record of the probe information database 103 in the storage device 105 (step S230).

  As described above, in the probe information collection process in the probe information collection system 10 of the present embodiment, the mobile phone 200 determines that the moving means is an automobile in the moving means determination (step S130 in FIG. 3). The probe information is transmitted to the information collecting server 100, but if it is determined that the moving means is walking, the probe information is not transmitted. For this reason, the information collection server 100 does not collect unnecessary probe information for grasping the traffic situation of the automobile, such as the probe information generated by the mobile phone 200 determined that the moving means is walking. Therefore, in the probe information collection processing in the probe information collection system 10 of the present embodiment, an increase in analysis processing load and a decrease in analysis accuracy by the information collection server 100 can be suppressed, and the mobile phone 200 and the information collection server 100 The increase in the amount of communication for probe information transmission / reception during the period can be suppressed.

  Further, in the probe information collection process in the probe information collection system 10 of the present embodiment, when the mobile phone 200 determines that the moving means is unknown in the determination of the moving means, Based on at least one of the current position measurement result history, it is estimated whether or not the moving means of the mobile phone 200 is an automobile. If the moving means is estimated to be an automobile, the moving means is an automobile. The probe information is transmitted to the information collection server 100 as in the case where it is determined that the information is collected. Even when it is determined that the moving means is unknown, if it is estimated that the moving means is a car, the probe information generated by the mobile phone 200 is used for grasping the traffic situation of the car. It is likely to be useful. Therefore, in the probe information collection process in the probe information collection system 10 of the present embodiment, more probe information that is likely to be useful for analyzing probe information for the purpose of grasping the traffic situation of the vehicle is collected. The quality of probe information analysis by the information collection server 100 can be improved.

  In the probe information collection process in the probe information collection system 10 of the present embodiment, the process shown in FIG. 3 is executed regardless of whether or not the mobile phone 200 is in route guidance. Therefore, the information collection server 100 can continuously collect probe information from many mobile phones 200, and improve the quality of probe information analysis. However, the mobile phone 200 may execute the process shown in FIG. 3 only during route guidance.

B. Second embodiment:
FIG. 6 is an explanatory diagram showing the flow of probe information collection processing in the second embodiment. The probe information collection processing in the second embodiment mainly includes the point that probe information is transmitted to the information collection server 100 regardless of the determination result of the moving means in the mobile phone 200, and the mobile phone 200 in the information collection server 100. This is different from the probe information collection processing in the first embodiment shown in FIG. 3 in that the determination of necessity of storing probe information according to the moving means is executed.

  That is, the main control unit 210 of the mobile phone 200 measures the current position (step S110) and determines whether the moving means of the mobile phone 200 is an automobile, a walk, or an unknown (step S130). The main control unit 210 creates probe information including moving means information (see FIG. 2) for specifying the moving means determination result, and transmits the probe information to the information collection server 100 (step S160).

  When receiving the probe information transmitted from the mobile phone 200 (step S210), the control unit 104 of the information collection server 100 reads the moving means information included in the probe information (step S220). When the moving means specified by the moving means information included in the probe information is “automobile”, the control unit 104 stores the received probe information in the storage device 105 as a record of the probe information database 103 (step S230). . On the other hand, when the moving means specified by the moving means information included in the probe information is “walking”, the control unit 104 stores the probe information in the storage device 105 as a record of the probe information database 103 (step S230). ) Do not do. In this case, the control unit 104 discards the received probe information or stores it as a record in a database other than the probe information database 103.

  Further, the control unit 104 of the information collection server 100 estimates whether or not the moving means of the mobile phone 200 is an automobile when the moving means specified by the moving means information included in the probe information is “unknown”. (Step S222). The estimation process by the control unit 104 of the information collection server 100 is executed in the same manner as the estimation process (step S150 in FIG. 3) by the main control unit 210 of the mobile phone 200 in the first embodiment. That is, the control unit 104 of the information collection server 100 stores a history of determination results of the mobile device 200 specified by the mobile device information included in the probe information in a specific storage area, and performs an estimation process based on the history. Execute. Alternatively, the control unit 104 may store a history of measurement results of the current position of the mobile phone 200 specified by the current position information included in the probe information in a specific storage area, and execute an estimation process based on the history. Good. Alternatively, the control unit 104 only estimates that the moving means is an automobile only when it is estimated that the moving means is an automobile by both estimation methods, and the moving means is obtained by either one or both of the estimation methods. If it is estimated that the vehicle is not a car, it may be finally estimated that the moving means is not a car.

  In the estimation of the moving means (step S222), when it is estimated that the moving means is an automobile, the control unit 104 of the information collection server 100 stores the probe information in the storage device 105 as a record of the probe information database 103 ( Step S230). On the other hand, when it is estimated that the moving means is not an automobile in the estimation of the moving means, the control unit 104 does not store the probe information in the storage device 105 as a record of the probe information database 103 (step S230).

  As described above, in the probe information collection process in the second embodiment, the mobile phone 200 determines the moving means (step S134), and includes moving means information indicating the determination result (whether it is an automobile or walking). Probe information is transmitted to the information collection server 100. The information collecting server 100, when the moving means information included in the probe information is “automobile”, and when the moving means information is “unknown” and the moving means is estimated to be an automobile, The probe information is stored in the storage device 105 as a record of the probe information database 103. On the other hand, the information collection server 100 determines when the moving means information included in the probe information is “walking”, and when the moving means information is “unknown” and the moving means is estimated not to be a car. Does not store the probe information as a record of the probe information database 103 in the storage device 105. Therefore, in the probe information collection processing in the second embodiment, an increase in analysis processing load by the information collection server 100 can be suppressed, and the quality of analysis can be improved.

C. Third embodiment:
FIG. 7 is an explanatory diagram showing the flow of probe information collection processing in the third embodiment. The probe information collection process in the third embodiment is mainly different from the probe information collection process in the first embodiment shown in FIG. Specifically, the probe information collection process of the third embodiment is aimed at grasping the distribution status of the mobile phone 200 within a preset geographical range (hereinafter referred to as “target area”). Therefore, when the current position of the mobile phone 200 is within the target area, the probe information generated by the mobile phone 200 is collected by the information collection server 100, and the current position of the mobile phone 200 is not within the target area. No probe information is collected.

  The main control unit 210 of the mobile phone 200 measures the current position (step S110) and determines whether or not the measured current position is within the target area (step S132). When it is determined that the current position of the mobile phone 200 is within the target area, the main control unit 210 creates probe information based on the measured current position and transmits the probe information to the information collection server 100. (Step S160). Thereafter, the main control unit 210 repeatedly executes the processing after the measurement of the current position at the next timing (step S110). On the other hand, when it is determined that the current position of the mobile phone 200 is not within the target area, the main control unit 210 measures the current position at the next timing (step S160) without transmitting the probe information (step S160). The processing after step S110) is repeated in the same manner. The information collection server 100 receives the probe information transmitted from the mobile phone 200 (step S210), and stores the received probe information as a record of the probe information database 103 in the storage device 105 (step S230).

  As described above, in the probe information collection process according to the third embodiment, the mobile phone 200 determines that the current position of the mobile phone 200 is within the target area, Information is transmitted, but if it is determined that the current position of the mobile phone 200 is not within the target area, probe information is not transmitted. Therefore, the information collection server 100 collects probe information that is unnecessary for grasping the distribution status of the mobile phone 200 in the target area, such as probe information generated by the mobile phone 200 located outside the target area. Not. Therefore, in the probe information collection process in the third embodiment, an increase in analysis processing load and a decrease in analysis accuracy by the information collection server 100 can be suppressed, and probe information between the mobile phone 200 and the information collection server 100 can be suppressed. An increase in the amount of communication for transmission / reception can be suppressed.

D. Variations:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

D1. Modification 1:
The configuration of the probe information collection system 10 in the above embodiment is merely an example and can be variously modified. For example, in the above-described embodiment, the mobile phone 200 includes the GPS receiver 201. However, instead of the GPS receiver 201, the current position of the mobile phone 200 is measured using a positioning system other than the GPS. A device may be provided. In the above embodiment, the GPS receiver 201 measures the current height in addition to the current position of the mobile phone 200, but the height measurement can be omitted.

  Moreover, although the example which applied the mobile telephone 200 as a portable terminal device was shown in the said Example, the aspect of a portable terminal device is not restricted to this. For example, a portable navigation device having a wireless communication function and a positioning function, a portable personal computer, a game machine, a PND (Personal Navigation Device), a PDA (Personal Digital Assistant), etc. can be applied as a portable terminal device. It is.

D2. Modification 2:
In the probe information collecting process (FIG. 3) of the first embodiment, when it is determined that the moving means of the mobile phone 200 is unknown, an estimation process (step S150) as to whether the moving means is an automobile is performed. Although it is supposed to be executed, such an estimation process can be omitted. For example, when it is determined that the moving means of the mobile phone 200 is unknown, the estimation process is not performed and the probe information transmission to the information collection server 100 may not be executed.

D3. Modification 3:
In the first and second embodiments, the algorithm used for the estimation process of whether or not the moving means is an automobile can be arbitrarily changed. For example, in the first embodiment, the main control unit 210 of the mobile phone 200 receives information specifying an algorithm used for the estimation process via the Internet INT, and changes the algorithm used for the estimation process based on the information. It may be possible to (update). Similarly, in the second embodiment, the control unit 104 of the information collection server 100 acquires information for specifying an algorithm used for the estimation process, and changes (updates) the algorithm used for the estimation process based on the information. It may be possible. In this way, the algorithm used for the estimation process can be optimized, and the quality of analysis by the information collection server 100 can be further improved through the improvement of the accuracy of the estimation process.

D4. Modification 4:
In the first and second embodiments, the moving means of the mobile phone 200 is determined as to whether it is an automobile, walking or unknown. However, the moving means is not limited to this. I can't. For example, the determination result of the moving means of the mobile phone 200 may be at least two of a car, a walk, a bicycle, a bus, a railway, an airplane, a ship, and unknown.

  In the first and second embodiments, the purpose of the probe information collection process is to grasp the traffic situation of the automobile, and the specific moving means is the automobile. That is, in the first embodiment, when the moving means of the mobile phone 200 is an automobile, the probe information generated by the mobile phone 200 is collected by the information collection server 100, and when the moving means is not an automobile. , Probe information is not collected. Further, in the second embodiment, when the moving means of the mobile phone 200 is an automobile, the probe information generated by the mobile phone 200 is stored in the storage device 105 as a record of the probe information database 103, and the moving means If the vehicle is not an automobile, the probe information is not stored. Instead of this, the purpose of the probe information collection process is to grasp the situation of the other moving means other than the automobile, and the specific moving means may be the other moving means. That is, in the first embodiment, when the moving means of the mobile phone 200 is the other moving means, the probe information generated by the mobile phone 200 is collected by the information collecting server 100, and the moving means is the other moving means. If it is not a moving means, probe information may not be collected. Also in this case, similarly to the first embodiment, when it is determined that the moving means of the mobile phone 200 is unknown, the determination result history of the moving means and the measurement result history of the current position are Based on at least one of the above, an estimation process may be executed as to whether or not the moving means is a specific moving means. The same applies to the second embodiment. The specific moving means is not limited to one type of moving means, and a plurality of types of moving means may be set as the specific moving means.

D5. Modification 5:
In the second embodiment, the probe information is transmitted to the information collecting server 100 regardless of the determination result of the moving means in the mobile phone 200. Instead, the moving means is an automobile (that is, specific Probe information is transmitted when it is determined that the moving means is unknown, and when the moving means is unknown, the moving means is walking (that is, by a moving means other than the specific moving means). If it is determined that there is a), the probe information may not be transmitted. In this way, an increase in the amount of communication for probe information transmission / reception between the mobile phone 200 and the information collection server 100 can be suppressed.

D6. Modification 6:
The condition for collecting the probe information generated by the mobile phone 200 by the information collecting server 100 is that the moving means of the mobile phone 200 is an automobile in the first embodiment (FIG. 3) and the second embodiment (FIG. 6). That is, in the third embodiment (FIG. 7), the current position of the mobile phone 200 is within the target area. The condition for collecting probe information by the information collection server 100 is as follows: Other arbitrary conditions can be set according to the purpose. Further, for example, the main control unit 210 of the mobile phone 200 may receive information specifying the condition via the Internet INT and change (update) the condition. In this way, optimal conditions can be set according to the purpose of analyzing probe information, and probe information analysis for various purposes can be realized with high accuracy and efficiency.

DESCRIPTION OF SYMBOLS 10 ... Probe information collection system 100 ... Information collection server 102 ... Communication part 103 ... Probe information database 104 ... Control part 105 ... Memory | storage device 200 ... Mobile phone 201 ... GPS receiver 202 ... Display panel 203 ... Audio | voice output part 204 ... Acceleration sensor 205 ... Wireless communication circuit 206 ... Operation unit 210 ... Main control unit 211 ... CPU
212 ... RAM
213 ... ROM
220 ... Call control unit

Claims (10)

A portable terminal device,
A positioning unit that measures the current position;
A determination unit for determining whether or not a preset condition for the portable terminal device is satisfied;
When it is determined that the condition is satisfied, probe information including information indicating the measured current position is transmitted, and when it is determined that the condition is not satisfied, the probe information is transmitted. An information transmission unit that does not transmit the mobile terminal device. The mobile terminal device according to claim 1,
The determination unit includes a moving unit determination unit that determines a moving unit of the mobile terminal device,
The condition is that the mobile means of the mobile terminal device is a preset specific mobile means. The mobile terminal device according to claim 2,
The moving means determining unit determines whether the moving means of the mobile terminal device is the specific moving means, a moving means other than the specific moving means, or unknown.
The determination unit, when it is determined that the moving unit of the mobile terminal device is unknown, based on at least one of a history of determination results of the moving unit of the mobile terminal device and a history of measurement results of the current position A mobile terminal device including a mobile device estimation unit that estimates whether the mobile device of the mobile terminal device is the specific mobile device. The mobile terminal device according to claim 3,
The mobile means estimation unit is configured to store the mobile device in a second period immediately after a first period in which a history of determination results of the mobile means of the mobile terminal device is determined to be unknown. A mobile terminal device that estimates that the mobile device of the mobile terminal device in the first period is the specific mobile device when the mobile device of the terminal device is a history determined to be the specific mobile device . The mobile terminal device according to claim 4,
When the length of the first period is equal to or greater than a preset threshold, the moving means estimation unit, the mobile terminal device in the first period, regardless of the determination result in the second period It is estimated that the moving means is not the specific moving means. The mobile terminal device according to claim 3,
In the case where the moving distance of the portable terminal device per unit time in the first period in which it is determined that the moving means of the portable terminal device is unknown is greater than or equal to a preset threshold value The mobile terminal apparatus that estimates that the mobile means of the mobile terminal apparatus in the first period is the specific mobile means. The mobile terminal device according to any one of claims 3 to 6,
The moving means estimation unit performs the estimation according to an algorithm,
The portable terminal device further includes:
A portable terminal device comprising: an algorithm management unit that receives information specifying the algorithm and updates the algorithm used for the estimation based on the received information specifying the algorithm. The mobile terminal device according to claim 1,
The condition is that the measured current position is within a preset geographical range. The mobile terminal device according to any one of claims 1 to 8, further comprising:
A mobile terminal device comprising: a condition management unit that receives information specifying the condition and updates the condition based on the received information specifying the condition. An information collection system comprising a mobile terminal device and an information collection device connected to each other via a network,
The portable terminal device
A positioning unit that measures the current position;
A moving means determination unit for determining whether the moving means of the mobile terminal device is a preset specific moving means, a moving means other than the specific moving means, or unknown;
A transmitting unit that transmits probe information including current position information indicating the measured current position and moving unit information indicating a determination result of the moving unit of the mobile terminal device to the information collecting device;
The information collecting device includes:
A receiving unit for receiving the probe information transmitted from the mobile terminal device;
When the determination result indicated by the moving means information included in the probe information is a determination result that the moving means is unknown, the history of the determination results indicated by the moving means information included in the probe information received previously and Based on at least one of the current position measurement result history indicated by the current position information, a moving means estimating unit that estimates whether the moving means of the mobile terminal device is the specific moving means,
When the moving means of the portable terminal device is the specific moving means, the probe information transmitted from the portable terminal device is stored in a specific storage area, and the moving means of the portable terminal device is the specific moving If not a means, an information collection system comprising: an information storage control unit that does not store the probe information transmitted from the mobile terminal device in the specific storage area.

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