Method for discriminating same moving body probe information, apparatus for discriminating same moving body probe information, and program for discriminating same moving body probe information

Abstract

To provide a discrimination method and the like capable of significantly improving operational efficiency of container and chassis.SOLUTION: A discrimination method for same mobile body probe information, which is a method for discriminating that at least two probe information included in a plurality of probe information are the probe information concerning the same mobile body, includes a discrimination process of discriminating, when position information X1 at time X in first probe information and position information X2 at substantially the same time as the time X in second probe information different from the first probe information, the first and second probe information being included in the plurality of probe information, are substantially the same, and position information Y1 at time Y sampled subsequent to the time X in the first probe information and position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same, that the first probe information and the second probe information are the probe information concerning the same mobile body.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a method for discriminating identical moving body probe information, a device for discriminating identical moving body probe information, and a program for discriminating identical moving body probe information.

Background Art

[0002] In recent years, with the development of IoT (Internet of Things), various in-vehicle devices for collecting various probe information (hereinafter referred to as "in-vehicle devices") have been mounted on various vehicles, and there are cases where a plurality of types of in-vehicle devices are mounted on one vehicle. For example, a digital tachograph or the like may be mounted as an in-vehicle device on the head portion of a container truck (hereinafter referred to as "container head"), and a GPS capturer or the like may be mounted as an in-vehicle device on the chassis portion of the container truck (hereinafter referred to as "container chassis") towed by the container head. In this case, since the container head and the container chassis are combined for towing to form one vehicle and become two separate vehicles when separated, the combined and separated states must be accurately managed.

[0003] Regarding this point, in the prior art, the combined and separated states of the container head and the container chassis were managed using individual systems for each in-vehicle device. Therefore, there is a problem that the combined and separated states of the container head and the container chassis cannot be accurately grasped, and the operation efficiency of the container chassis is extremely low. In addition, since information registration is performed manually, there is a problem that it is not known even if there is a misinput.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention aims to solve the above-described problems and achieve the following objectives. That is, the present invention can determine that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving body. For example, it can automatically and accurately manage the connection and disconnection states between a container head and a container chassis quickly, and can significantly improve the operation efficiency of the container chassis. An object of the present invention is to provide a method for discriminating same moving body probe information, a device for discriminating same moving body probe information, and a program for discriminating same moving body probe information.

Means for Solving the Problem

[0005] The means for solving the above problem are as follows. That is, <1> A method for determining that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving body, included in the plurality of pieces of the probe information, when position information X1 at time X in first probe information and position information X2 at substantially the same time as the time X in second probe information different from the first probe information are substantially the same, and when position information Y1 at time Y sampled next to the time X in the first probe information and position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same, a determination step of determining that the first probe information and the second probe information are probe information regarding the same moving body, characterized in that it includes the same moving body probe information discrimination method. <2> The same moving body probe information discrimination method according to <1>, wherein the sampling number of the first probe information and the sampling number of the second probe information are different from each other. <3> In the determination step, when there are three or more pieces of probe information determined to be probe information regarding the same moving body, Among the probe information with 3 or more, the probe information with a small number of samplings has position information that is substantially the same as the position information at the same time as the movement start point at the time of the movement start point, and at any time from after the movement start to the end of the movement, the same position information as that at substantially the same time as any point from after the movement start to the end of the movement. The probe information having, The method for discriminating the same moving body probe information according to any one of <1> to <2>, which discriminates that the probe information is the probe information regarding the same moving body together with the probe information with a small number of samplings. <4> An apparatus for discriminating that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving body, Included in a plurality of the probe information, The position information X1 at time X in the first probe information and the position information X2 at substantially the same time as the time X in the second probe information different from the first probe information are substantially the same, and When the position information Y1 at time Y sampled next to the time X in the first probe information and the position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same, Discriminating means for discriminating that the first probe information and the second probe information are probe information regarding the same moving body, A discrimination device for the same moving body probe information, characterized by having the above. <5> A program for discriminating that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving body, Included in a plurality of the probe information, The position information X1 at time X in the first probe information and the position information X2 at substantially the same time as the time X in the second probe information different from the first probe information are substantially the same, and When the position information Y1 at time Y sampled next to time X in the first probe information and the position information Y2 at a time substantially the same as time Y in the second probe information are substantially the same, a discrimination process for discriminating that the first probe information and the second probe information are probe information regarding the same moving object, A discrimination program for the same moving object probe information, which causes a computer to perform the process.

Effect of the Invention

[0006] According to the present invention, the above-described various problems in the prior art can be solved and the above object can be achieved. The present invention can discriminate that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving object. For example, it is possible to accurately and quickly automatically manage the connection and disconnection states of a container head and a container chassis, and it is possible to significantly improve the operation efficiency of the container chassis. A discrimination method for the same moving object probe information, a discrimination device for the same moving object probe information, and a discrimination program for the same moving object probe information can be provided.

Brief Description of the Drawings

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Embodiments for Carrying Out the Invention

[0008] (Method for Discriminating Probe Information of the Same Moving Object and Device for Discriminating Probe Information of the Same Moving Object) The method for discriminating probe information of the same moving object according to the present invention is a method for discriminating that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving object, and includes a discrimination step, and further includes other steps as necessary.

[0009] The device for discriminating probe information of the same moving object according to the present invention is a device for discriminating that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving object, has a discrimination means, and further has other means as necessary.

[0010] The method for discriminating probe information of the same moving object according to the present invention can be preferably implemented by the device for discriminating probe information of the same moving object according to the present invention. The discrimination step can be performed by the discrimination means, and other steps can be performed by other means.

[0011] According to the method for discriminating probe information of the same moving object according to the present invention and the device for discriminating probe information of the same moving object according to the present invention, it is possible to discriminate that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving object.

[0012] As shown in FIG. 4, when there are four types of in-vehicle devices for collecting probes (digital tachograph (D), GPS capture device (G1), ETC2.0 (G2), smartphone (S)) for the entire vehicle as the moving object, the vehicle can be classified into three types: a vehicle equipped with a plurality of types of in-vehicle devices, a vehicle equipped with one type of in-vehicle device, and a vehicle not equipped with an in-vehicle device. In FIG. 4, "1*" and "2*" indicate the case where a plurality of types of in-vehicle devices are mounted on one vehicle.

[0013] Regarding the three types of in-vehicle devices above, the in-vehicle device for the probe D which is a digital tachograph (D) (collectively referred to as in-vehicle D, in-vehicle ID "D-ID"), the in-vehicle device for the probe G1 which is a GPS capture device (G1) (collectively referred to as in-vehicle G1, "G1-ID"), the in-vehicle device for the probe G2 which is ETC2.0 (G2) (collectively referred to as in-vehicle G2, "G2-ID"), and the in-vehicle device for the probe S which is a smartphone (S) (collectively referred to as in-vehicle S, in-vehicle ID "S-ID"), the in-vehicle D is mounted on a container head, a raw container vehicle, etc. The in-vehicle G1 is mounted on a dump truck, a container chassis, etc. The in-vehicle G2 is mounted on a container head, a single truck, etc. The in-vehicle S is mounted on a passenger car, etc.

[0014] In the present invention, it is defined that the first probe information and the second probe information are probe information regarding the same moving body as "one set" or "same body". As shown in FIG. 5, the "one set" means a case where a container head and a container chassis are coupled, and the container head is equipped with the in-vehicle D and the container chassis is equipped with the in-vehicle G1. In order to accurately grasp the state of the "one set", it is necessary to determine that, after grasping all the in-vehicle Ds and in-vehicle G1s, their movements are substantially the same (in the vicinity) during a certain time period and road section. The "one set" means that the container head and the container chassis, which were originally separate vehicles, can be associated with the digital tachograph D and the GPS capture device G1 mounted on each of them, so it means that they are being operated as "one set". On the other hand, the "same body" means that the digital tachograph D and ETC2.0 (G2), which are different in-vehicle devices mounted on the container head or the single truck, which was originally one vehicle, can be associated, so it means that they are in the state of being mounted on the same vehicle, "same body".

[0015] The "probe information" means information obtained when the vehicle equipped with the in-vehicle device actually travels. For example, vehicle ID, travel route ID, position (longitude, latitude), speed, departure date and time, departure place (longitude, latitude), arrival date and time, destination (longitude, latitude), travel distance, required time, etc. can be mentioned.

[0016] Examples of the moving body include vehicles. Examples of the vehicle include a container head, a container chassis, a truck, a raw container vehicle, a dump truck, a passenger car, a large special vehicle, a small special vehicle, a large motorcycle, and a passenger motorcycle. The same moving body means one moving body. For example, when a container head and a container chassis are coupled, they are one moving body and the same moving body. However, when the container head and the container chassis are separated, the container head and the container chassis become two moving bodies and do not correspond to the same moving body. That the same moving body has a plurality of probe information means that one moving body has at least first probe information and second probe information, and may have three or more types of probe information.

[0017] <Discrimination step and discrimination means> The discrimination step is a step of discriminating that the first probe information and the second probe information are probe information regarding the same moving body when position information X1 at time X in the first probe information included in the plurality of probe information and position information X2 at substantially the same time as the time X in the second probe information different from the first probe information are substantially the same, and position information Y1 at time Y sampled next to the time X in the first probe information and position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same, and is preferably implemented by a discrimination means.

[0018] In the discrimination step, the number of samplings of the first probe information and the second probe information may be the same, but it is preferable that the number of samplings of the first probe information and the number of samplings of the second probe information are different from each other in terms of improving the discrimination accuracy of being the same moving body, and it is more preferable that the number of samplings of the first probe information is larger than the number of samplings of the second probe information.

[0019] Examples of the first probe that collects the first probe information include, for example, a digital tachograph. Examples of the second probe that collects the second probe information include, for example, a GPS capturer, ETC 2.0, a smartphone, and the like.

[0020] The characteristics of the digital tachograph, GPS capturer, ETC 2.0, and smartphone are as shown in Table A below.

[0021]

Table A

[0022] A digital tachograph (sometimes abbreviated as "digital tacho") is certified by the Automobile Bureau of the Ministry of Land, Infrastructure, Transport and Tourism and the Ministry of Health, Labour and Welfare in cooperation with each other for the purpose of visualizing the working conditions of truck operators and bus operators and obligating them to obtain operation records. Approximately 20 private companies are shipping certified devices, such as Transtron Co., Ltd. and Yazaki Energy Systems Co., Ltd. In the present invention, a digital tacho manufactured by Transtron Co., Ltd., which is strong in the cloud type, is used, but there is no particular limitation as long as it is a cloud type. Note that the digital tacho has a power supply, and the GPS acquisition interval is 1 second.

[0023] Since a GPS capturer has no power supply and only moves in a towed state, such as a towed vehicle (trailer, chassis part of a container truck, double connection), etc., grasping position information has become an issue for logistics operators in recent years. Therefore, several private companies have started product development. Note that the GPS capturer has no power supply, and the GPS acquisition interval can be changed from 5 seconds to 1 hour depending on the application in relation to the battery life.

[0024] For ETC2.0, the Road Bureau of the Ministry of Land, Infrastructure, Transport and Tourism has standardized in-vehicle ETC units for highway toll collection. To obtain traffic congestion information on roads, roadside units are installed on the roadside, and when a vehicle passes by, the data stored in the in-vehicle unit is uploaded. Note that ETC2.0 has power supply, the GPS acquisition interval is 200 m, and the cumulative change in the traveling direction is 45°. The introduction of ETC2.0 is being promoted by a highway discount system for logistics companies, and about 10 private companies have shipped certified devices, such as Panasonic Corporation.

[0025] In the present invention, it is determined that the first probe information and the second probe information are probe information regarding the same moving object, that is, they are "a set" or "the same object". For example, when there is "first probe information D" and "second probe information G1", generally, from the use and characteristics of the probe in-vehicle unit that collects the probe information, the installation position is usually determined by the design of the in-vehicle unit. Specifically, in-vehicle D is generally installed at the head part of a container truck and at the front part in front of the seat of a fresh food truck, and in-vehicle G1 is generally installed near the front of the cargo bed at the chassis part of a dump truck or a container truck. The installation positions are generally as shown in FIGS. 6 and 7. Note that "a set" in the present invention corresponds to FIG. 7. Also, "the same object" corresponds to [a] in FIG. 15.

[0026] Here, the moving state and the stopped state of the moving object will be used to explain "substantially the same time" and "substantially the same position information". As shown in FIG. 7, the container head is located in front of the container chassis in the traveling direction. Therefore, in the moving state, in-vehicle G1 will pass after in-vehicle D passes. Note that although it frequently occurs that the container head moves backward and couples with the container chassis when the container head is alone, backward movement hardly occurs when the container head and the container chassis are coupled.

[0027] In order to fuse multiple types of probes, it is a prerequisite to grasp the substantially same (vicinity) of multiple moving objects. In the present invention, as will be described below, the substantially same (vicinity) is determined by the "space-time distance". Hereinafter, the space-time distance will be defined separately for the moving state and the stopped state of the moving object.

[0028] - Moving state of the moving object - In the case of probe D and probe G which are multiple types of probes, the container head is located in front in the traveling direction with respect to the container chassis. When probe D is in front of probe G, the difference in probe acquisition times (time G - time D) does not take a negative value. Therefore, the space-time distance in the moving state is defined by the following formula 1. Near 35 degrees north latitude, 1 second of longitude is 25 m and 1 second of latitude is 31 m. However, in the present invention, since it is not an essential problem, both longitude and latitude are set to 1 second = 25 m.

[0029] [Formula 1] TIFF0007704415000002.tif17163However, when the time D of the first probe D and the time G of the second probe G are the same, the space-time distance in the above formula 1 becomes "0". Therefore, the "range for evaluating the space-time distance" is defined as follows. As shown in FIG. 8, the "range for evaluating the space-time distance" is a range of a circle A centered on the second probe G1 and with a radius n seconds = [speed x (km / h) of the vehicle carrying the second probe G1 × 2 seconds / 60 (km / h)]. If the speed x of the vehicle carrying the second probe G1 is not known, 60 (km / h) is used as the default value. In FIG. 8, the first probes D1, D2, D3, D4 are within the range for evaluating the space-time distance, while the first probes D5, D6 are outside the range for evaluating the space-time distance. Here, near G1 in FIG. 8, probe data D1, D2, D3, D4, D5, D6, ··· are acquired every second. For example, considering the case of traveling at 60 km / h, probe data is acquired every 16.7 m, and four probe data will fall within the range of circle A with a "radius of 2 seconds", that is, a "diameter of 4 seconds" = 4 seconds × 25 m = 100 m, which is the "range for evaluating the spatio-temporal distance", including those of other vehicles, and it becomes a range where appropriate capture can be achieved.

[0030] In the present invention, the position information X1 at time X in the first probe information and the position information X2 at a time substantially the same as time X in the second probe information different from the first probe information are substantially the same, and the position information Y1 at time Y sampled next to time X in the first probe information and the position information Y2 at a time substantially the same as time Y in the second probe information are substantially the same. When represented by the spatio-temporal distance in the moving state, the spatio-temporal distance between the first probe information and the second probe information is positive or zero, and probes with the minimum spatio-temporal distance are regarded as substantially the same (in the vicinity). Specifically, the spatio-temporal distance between the first probe information and the second probe information in the moving state is preferably 1.5 (second·second) or less, and more preferably 1.0 (second·second) or less.

[0031] -State of the moving object being stationary- When the container chassis is in a stationary state, a plurality of container heads may exist in its vicinity. In the stationary state, the moving object is not moving, and the time sequence cannot be considered, so the absolute value is taken for the difference in probe acquisition times (time G - time D). Therefore, the spatio-temporal distance in the stationary state is defined by the following formula 2.

[0032] [Formula 2] TIFF0007704415000003.tif17165However, when the time D of the first probe D and the time G of the second probe G are the same, the spatio-temporal distance in the above formula 2 becomes "0". Therefore, the "range for evaluating the spatio-temporal distance" is defined as follows. As shown in FIG. 8, the "range for evaluating the spatio-temporal distance" has the second probe G1 as the center and a circle A with a radius n seconds = [speed x (km / h) of the vehicle equipped with the second probe G1 × 2 seconds / 60 (km / h)]. When the speed x of the vehicle equipped with the second probe G1 is unknown, 60 (km / h) is used as the default value. In FIG. 8, the first probes D1, D2, D3, and D4 are within the range for evaluating the spatio-temporal distance, while the first probes D5 and D6 are outside the range for evaluating the spatio-temporal distance.

[0033] In the present invention, the position information X1 at time X in the first probe information and the position information X2 at substantially the same time as the time X in the second probe information, which is different from the first probe information, are substantially the same, and the position information Y1 at time Y sampled next to the time X in the first probe information and the position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same. When represented by the spatio-temporal distance in the stopped state, the spatio-temporal distance between the first probe information and the second probe information is positive or zero, and the probes with the minimum spatio-temporal distance are regarded as substantially the same (in the vicinity). Specifically, the spatio-temporal distance between the first probe information and the second probe information in the stopped state is preferably 1.5 (second · second) or less, and more preferably 1.0 (second · second) or less.

[0034] In one aspect of the present invention, after primarily estimating the stopped state of a moving object using the spatio-temporal distance in the stopped state, the moving state of the moving object is verified using the spatio-temporal distance in the moving state, whereby it can be determined that the first probe information and the second probe information are substantially the same (in the vicinity), and it can be discriminated that both pieces of probe information are probe information regarding the same moving object (are "a set" or "the same entity").

[0035] In the primary estimation, when the container chassis is in a stopped state, a plurality of container heads may exist in the vicinity thereof. Probe information of the container head existing in the range where the spatio-temporal distance in the stopped state is 1.5 (second·second) or less (preferably 1.0 (second·second) or less) with the probe information in the stopped state as the center is estimated. The method of verifying the moving state of the moving object using the spatio-temporal distance in the moving state is the same as the method of discriminating the moving state of the above-described moving object.

[0036] In one aspect of the present invention, in the discrimination step, when there are three or more pieces of probe information discriminated as being probe information regarding the same moving object, among the three or more pieces of probe information, the probe information having substantially the same position information at the time of the movement start point as the movement start point and substantially the same position information at an arbitrary point from after the movement start to the end of the movement at the time at an arbitrary point from after the movement start to the end of the movement is discriminated as probe information regarding the same moving object together with the probe information with a small number of sampling counts.

[0037] This aspect is a discrimination method for "a set" when the number of pieces of probe information discriminated as being the same moving object is as large as three or more. Note that the discrimination method for "a set" is as described above. Probe information with a small number of sampling counts corresponds to, for example, a GPS capturer for probe information collected by a digital tachograph or probe information collected by a smartphone. Any point from the start of movement to the end of movement includes the vicinity of the start point of movement, the vicinity of the end point of movement, intermediate points, and the like. By verifying that it is in the "set" state near the start point of movement and the end point of movement and in the "set" state at the intermediate point, it is possible to more accurately determine that they are substantially the same in the moving state.

[0038] In one aspect of the present invention, in the determination step, further, when the position information Z1 at the time Z sampled next to the time Y in the first probe information and the position information Z2 at substantially the same time as the time Z in the second probe information are substantially the same, it is determined that the first probe information and the second probe information are probe information regarding the same moving object.

[0039] In this aspect, by increasing the amount of position information to be sampled, it is possible to enhance the discrimination ability to determine that the first probe information and the second probe information are probe information regarding the same moving object. The "next" may be a continuous "next" sample or a spaced "next" sample.

[0040] <Other steps and other means> The other steps are not particularly limited and can be appropriately selected according to the purpose. For example, a communication step, an input step, and the like can be mentioned. The other means are not particularly limited and can be appropriately selected according to the purpose. For example, a communication means, an input means, and the like can be mentioned.

[0041] The communication unit is not particularly limited as long as it can communicate with the discrimination device for probe information of the same moving object, and a publicly known one can be appropriately used. For example, a transceiver, an information communication network, the Internet, and the like can be mentioned.

[0042] The input unit is not particularly limited as long as it can receive various requests for the discriminator of the same moving body probe information, and known ones can be appropriately used. For example, a keyboard, a mouse, a touch panel, a microphone, etc. can be mentioned.

[0043] (Discrimination Program for Probe Information of the Same Moving Body) The discrimination program for probe information of the same moving body of the present invention is a program for discriminating that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving body. Among the plurality of pieces of probe information, position information X1 at time X in the first probe information and position information X2 at substantially the same time as the time X in the second probe information different from the first probe information are substantially the same, and position information Y1 at time Y sampled next to the time X in the first probe information and position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same, a discrimination process for discriminating that the first probe information and the second probe information are probe information regarding the same moving body is performed by a computer.

[0044] The discrimination program for probe information of the same moving body of the present invention can be, for example, a program for causing a computer to execute the discrimination method for probe information of the same moving body of the present invention. Also, a preferred aspect in the discrimination program for probe information of the same moving body of the present invention can be the same as a preferred aspect in the discrimination method for probe information of the same moving body of the present invention, for example.

[0045] The discrimination program for probe information of the same moving body of the present invention can be created using various known programming languages according to the configuration of the computer system to be used and the type and version of the operating system.

[0046] The discrimination program for the same moving body probe information of the present invention may be recorded on a recording medium such as a built-in hard disk or an external hard disk, or may be recorded on a recording medium such as a CD-ROM, DVD-ROM, MO disk, or USB memory. Furthermore, when recording the discrimination program for the same moving body probe information of the present invention on the above recording medium, if necessary, it can be directly installed on a hard disk or used after being installed on a hard disk through a recording medium reading device possessed by the computer system. Also, the discrimination program for the same moving body probe information of the present invention may be recorded in an external storage area (such as another computer) accessible from the computer system through an information communication network. In this case, the discrimination program for the same moving body probe information of the present invention recorded in the external storage area can be directly installed on a hard disk or used after being installed on a hard disk through the information communication network from the external storage area if necessary. Note that the discrimination program for the same moving body probe information of the present invention may be recorded on a plurality of recording media and divided for each arbitrary process.

[0047] <Computer-readable recording medium> The computer-readable recording medium related to the present invention records the discrimination program for the same moving body probe information of the present invention. There is no particular limitation on the computer-readable recording medium related to the present invention, and it can be appropriately selected according to the purpose. For example, a built-in hard disk, an external hard disk, a CD-ROM, a DVD-ROM, an MO disk, a USB memory, etc. can be mentioned. Also, the computer-readable recording medium related to the present invention may be a plurality of recording media on which the discrimination program for the same moving body probe information of the present invention is recorded with division for each arbitrary process.

[0048] Hereinafter, an example of the technology disclosed in the present invention will be described in more detail using a configuration example of the device, a flowchart, etc. Fig. 1 shows an example of the hardware configuration of the discrimination device for the same moving body probe information of the present invention. In the discrimination device 100 for the same moving body probe information, for example, a control unit 101, a main memory device 102, an auxiliary storage device 103, an I / O interface 104, a communication interface 105, an input device 106, an output device 107, and a display device 108 are connected via a system bus 109.

[0049] The control unit 101 performs operations (arithmetic operations such as addition, subtraction, multiplication, and division, comparison operations, etc.), and controls the operations of hardware and software. As the control unit 101, for example, a CPU (Central Processing Unit) may be used, or it may be a part of the machine used in the method for discriminating the same moving body probe information, or a combination of these may be used. The control unit 101 realizes various functions by executing a program (for example, the discrimination program for the same moving body probe information of the present invention) read into the main memory device 102 or the like. The processing performed by the discrimination means (discrimination unit) in the discrimination device for the same moving body probe information of the present invention can be performed by, for example, the control unit 101.

[0050] The main memory device 102 stores various programs and stores data and the like necessary for executing various programs. As the main memory device 102, for example, a device having at least one of a ROM (Read Only Memory) and a RAM (Random Access Memory) can be used. The ROM stores various programs such as, for example, a BIOS (Basic Input / Output System). Also, there is no particular limitation on the ROM, and it can be appropriately selected according to the purpose. Examples include a mask ROM, a PROM (Programmable ROM), and the like. The RAM functions as a working area where various programs stored in, for example, the ROM or the auxiliary storage device 103 are expanded when executed by the control unit 101. There are no particular restrictions on the RAM, and it can be appropriately selected according to the purpose. Examples include DRAM (Dynamic Random Access Memory), SRAM (Static Random Access Memory), etc.

[0051] There are no particular restrictions on the auxiliary storage device 103 as long as it can store various information, and it can be appropriately selected according to the purpose. Examples include a solid state drive (SSD), a hard disk drive (HDD), etc. Also, the auxiliary storage device 103 may be a removable storage device such as a CD drive, a DVD drive, a BD (Blu-ray (registered trademark) Disc) drive. Also, the discrimination program for the same mobile body probe information of the present invention is stored in, for example, the auxiliary storage device 103, loaded into the RAM (main memory) of the main storage device 102, and executed by the control unit 101.

[0052] The I / O interface 104 is an interface for connecting various external devices. The I / O interface 104 enables input and output of data such as a CD-ROM (Compact Disc ROM), a DVD-ROM (Digital Versatile Disk ROM), a MO disk (Magneto-Optical disk), a USB memory [USB (Universal Serial Bus) flash drive].

[0053] There are no particular restrictions on the communication interface 105, and appropriately known ones can be used. Examples include communication devices using wireless or wired means.

[0054] The input device 106 is not particularly limited as long as it can receive various requests and information for the discrimination device 100 of the same moving body probe information, and a publicly known device can be appropriately used. For example, a keyboard, a mouse, a touch panel, a microphone, etc. can be mentioned. When the input device 106 is a touch panel (touch display), the input device 106 can also serve as the display device 108.

[0055] The output device 107 is not particularly limited, and a publicly known device can be appropriately used. For example, a printer, etc. can be mentioned. The display device 108 is not particularly limited, and a publicly known device can be appropriately used. For example, a liquid crystal display, an organic EL display, etc. can be mentioned.

[0056] FIG. 2 shows a functional configuration example of the discrimination device for the same moving body probe information of the present invention. As shown in FIG. 2, the discrimination device 100 for the same moving body probe information includes a communication function unit 120, an input function unit 130, an output function unit 140, a display function unit 150, a storage function unit 160, and a control function unit 170.

[0057] The communication function unit 120 transmits and receives various data to and from an external device, for example. The communication function unit 120 may receive data such as vehicle attribute data and driving record data from an external device, for example. The input function unit 130 receives various instructions for the discrimination device 100 of the same moving body probe information, for example. The input function unit 130 also receives a plurality of probe information, for example. The output function unit 140 prints out the result determined to be probe information regarding the same moving body, for example. The display function unit 150 displays the result determined to be probe information regarding the same moving body on the display, for example.

[0058] The storage function unit 160 stores various programs and has a probe information DB 161 and a discrimination result DB 162, for example. The probe information DB161 is a DB that stores probe information collected by an in-vehicle unit. As shown in Table B below, the probe information data includes data items of "vehicle ID", "travel route ID", "position (longitude, latitude)", "speed", "departure date and time", "departure location (longitude, latitude)", "arrival date and time", "destination (longitude, latitude)", "travel distance", and "required time".

[0059]

Table B

[0060] The data item of "vehicle ID" is data for identifying the vehicle on which the in-vehicle unit is mounted, and is preset. The data item of "travel route ID" is used to identify the travel route, which is a unit for moving from a certain departure location to a certain destination with a purpose. The data items of "date and time" and "position (longitude, latitude)" are acquired by a GPS (Global Positioning System) unit mounted on the in-vehicle unit. The data item of "speed" is synchronized with the GPS unit and acquired from the vehicle axle of the vehicle using a speed sensor possessed by the in-vehicle unit. The data items of "departure date and time" and "departure location (longitude, latitude)" are the departure date and time of the travel route and the longitude and latitude of the departure location. The data items of "arrival date and time" and "destination (longitude, latitude)" are the arrival date and time of the travel route and the longitude and latitude of the destination. The data item of "travel distance" is the travel distance from the departure location to the current location. The data item of "required time" is the required time from the departure location to the current location.

[0061] The discrimination result DB162 is a DB that stores the results discriminated by the discrimination device for the same moving object probe information.

[0062] The control function unit 170 has a discrimination unit 171 as a discrimination means. The control function unit 170 executes various programs stored in the storage function unit 160, for example, and controls the operation of the entire discrimination device 100 for the same moving body probe information. The discrimination unit 171, for example, when the position information X1 at time X in the first probe information included in the plurality of the probe information and the position information X2 at substantially the same time as the time X in the second probe information different from the first probe information are substantially the same, and the position information Y1 at time Y sampled next to the time X in the first probe information and the position information Y2 at substantially the same time as the time Y in the second probe information are substantially the same, performs a process of discriminating that the first probe information and the second probe information are probe information regarding the same moving body.

[0063] Here, FIG. 3 is a flowchart showing an example of the flow of processing in the method for discriminating the same moving body probe information of the present invention. Hereinafter, with reference to FIG. 2, the flow of the discrimination process for the same moving body probe information will be described.

[0064] In step S101, when the control function unit 170 in the discrimination device 100 for the same moving body probe information receives a plurality of probe information in the moving body, the process proceeds to S102.

[0065] In step S102, the discrimination unit 171 in the discrimination device 100 for the same moving body probe information evaluates whether the position information X1 at time X in the first probe information included in the plurality of probe information and the position information X2 at substantially the same time as the time X in the second probe information different from the first probe information are substantially the same, and then the process proceeds to S103.

[0066] In step S103, when the determination unit 171 in the moving body probe information determination device 100 evaluates whether the position information Y1 at time Y sampled next to time X in the first probe information is substantially the same as the position information Y2 at substantially the same time as time Y, the process proceeds to S104.

[0067] In step S104, when the determination unit 171 in the moving body probe information determination device 100 determines that the first probe information and the second probe information are probe information regarding the same moving body when the evaluation result in step S102 is substantially the same and the evaluation result in step S103 is substantially the same, this process ends.

Example

[0068] Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to these embodiments in any way.

[0069] In the following embodiments, a digital tachograph (collectively referred to as in-vehicle D, in-vehicle ID "D-ID") and a GPS capturer (collectively referred to as in-vehicle G1, "G1-ID") are used as in-vehicle devices. Details of in-vehicle D and in-vehicle G1 are as shown in Table 1 below. As shown in FIG. 7, in-vehicle D is mounted on the container head. In-vehicle G1 is mounted on the container chassis.

[0070]

Table 1

[0071] (Example 1) <Example of the moving state of the moving body> In a "Vehicle Identification Area (CIA)" (for example, a 300 m section) on a specific road, it is determined whether the container head and the container chassis are coupled, and the container head is equipped with in-vehicle D and the container chassis is equipped with in-vehicle G1 (being a "set"). The identification of each vehicle is performed in the "Vehicle Identification Area (CIA)". As shown in FIG. 9, in the "Vehicle Identification Interval (CIA)", during the time periods (each 10 seconds of t31 to t32, t32 to t33, S 31 , S 32 ), a total of 6 vehicles are passing through. The classification of each vehicle is as shown in Table 2 below. Note that one of the 6 vehicles corresponds to [d], [g], or [h] in Table 2, and since it does not have a container head and a container chassis, or in-vehicle D or in-vehicle G1 mounted on the container head and no probe information, it cannot be grasped.

[0072]

Table 2

[0073] Those for which probe information can be grasped can be represented by Dn as D-ID and G1m as G1-ID, and are [a], [b], [c], [e], or [f] in Table 2. Among these, [a] in Table 2 is "a set", the container head and the container chassis are combined, the container head is equipped with in-vehicle D, and the container chassis is equipped with in-vehicle G1. As shown in FIG. 9, "Probe information D1-0 to D1-9 and Probe information G1-1 to G1-2", "Probe information G2-1 to G2-2", "Probe information D3-0 to D3-9 and Probe information G3-1 to G3-2", "Probe information D4-0 to D4-9 and Probe information G4-1 to G4-2", "Probe information D5-0 to D5-9" can be mentioned. Among these, "Probe information D1-0 to D1-9 and Probe information G1-1 to G1-2", "Probe information D3-0 to D3-9 and Probe information G3-1 to G3-2", and "Probe information D4-0 to D4-9 and Probe information G4-1 to G4-2" are "a set". Also, "Probe information G2-1 to G2-2" is in the state of [c] in Table 2. Also, "Probe information D5-0 to D5-9" is in the state of [b], [e], or [f] in Table 2. Note that there is no merit in separating [e] and [f], [g] and [h] in Table 2.

[0074] Next, verify that the "probe information D3-0 to D3-9 and probe information G3-1 to G3-2" are in a "set". As shown in FIG. 10, focusing on the time t31(X - 5.0) which is 2×Ig (= 10 seconds) before the time t33(X + 5.0) when G3-2 passes through the vicinity of 200m to 300m in the "vehicle identification section".

[0075] Every 10 seconds, the GPS capture device mounted on the container chassis extracts all G1-IDs at the 200m to 300m point and 0m to 300m point in the "vehicle identification section". The following processing is performed on all the extracted G1-IDs. Here, the "probe information D3-0 to D3-9" shown in FIG. 10 is taken as an example. Time zone S which is Ig (= 5 seconds) from t31 which is 2×Ig (= 10 seconds) before a certain time t33 when probe G3-2 is detected 31 is focused on. Time zone S 31 In this time zone S, all D-IDs in the "vehicle identification section" are extracted. Let the set be D-ID1. From the set of D-ID1, D3 having the closest (position information, time) to the probe information G3-1 is extracted. Probe information D3-0, D3-1, D3-2, D3-3, D3-4 are applicable. The substantial identity (in the vicinity) with the probe information G3-1 is evaluated by the spatio-temporal distance. In the moving state, the spatio-temporal distance is such that the container head is located in front of the container chassis in the traveling direction, and since the probe D is in front of the probe G1, the difference in probe acquisition times (time G1 - time D) does not take a negative value. Therefore, the spatio-temporal distance in the moving state is defined by the following formula 1. Near 35 degrees north latitude, 1 second = 25m for both latitude and longitude. The spatio-temporal distance in the moving state between the "probe information D3-0, D3-1, D3-2, D3-3, D3-4, D4-1, D4-2" shown in FIG. 10 and the probe information G3-1 was obtained. The results are shown in Table 3.

[0076] [Formula 1] TIFF0007704415000007.tif17163

[0077]

Table 3

[0078] Next, in the time zone S shown in FIG. 11 31 in the next time zone S 32 it is determined whether probe information G3-2 is on the trajectory of D3, namely "probe information D3-5, D3-6, D3-7, D3-8, D3-9". The spatio-temporal distance in the moving states between "probe information D3-5, D3-6, D3-7, D3-8, D3-9, D4-3, D4-4, D4-5, D4-6, D4-7" shown in FIG. 11 and probe information G3-2 was obtained in the same manner as above. The results are shown in Table 4.

[0079]

Table 4

[0080] From the above results, since the probe information (G3-1 and G3-2) of probe G3 is on the same trajectory as the probe information (D3-0 to D3-9) of probe D3 and the two are substantially the same, it can be determined that they are probe information regarding the same moving object (they are "a set").

[0081] (Example 2) <Example where the moving object transitions from a stationary state to a moving state> (1)~(3) Perform primary estimation in the stationary state of the moving object, verify in the moving state of the moving object in (4)~(5), and from these results, determine that the probe information of the same moving object is substantially the same (in the vicinity).

[0082] -Primary estimation in the stationary state- (1) Determine the substantial identity (vicinity) of the probe information G-0 in the probe G1 by the space-time distance in the stationary state, and identify the set {Da, Db} of probes D. When the container chassis is in a stationary state, there may be a plurality of container heads in the vicinity. As shown in FIG. 12, within the range where the space-time distance in the stationary state is 1.5 (seconds·seconds) or less centered on the probe information G-0 (the range indicated by ε1 in FIG. 12), there are probe information Da-10, Db-29, and Db-30. The acquisition interval Ig in the probe G1 is 5 seconds, and there is no probe information during the stationary state, so it cannot be discussed. Therefore, it is determined by the space-time distance in the stationary state of the following formula 2. The space-time distances in the stationary state between the probe information G-0 and the probe information Da-10, between the probe information G-0 and the probe information Db-29, and between the probe information G-0 and the probe information Db-30 shown in FIG. 12 were obtained. The results are shown in Table 5.

[0083] [Formula 2] TIFF0007704415000010.tif17165

[0084]

Table 5

[0085] (2) Determine the substantial identity (in the vicinity) of probe information G-n in probe G1 by the spatio-temporal distance of the stop state, and specify the set {Db, Dc} of probes D. As shown in Fig. 12, determine the substantial identity (in the vicinity) between probe information Db-90 and probe information Dc-1 included in the range (the range indicated by ε2 in Fig. 12) where the spatio-temporal distance of the stop state is 1.5 (seconds·seconds) or less centered on probe information G-n. The acquisition interval Ig in probe G1 is 5 seconds, and there is no information during the stop state, so it cannot be discussed. Therefore, it is judged by the spatio-temporal distance in the stop state of the above formula 2. The results are shown in Table 6.

[0086]

Table 6

[0087] (3) Next, as shown in FIG. 13, the product of the set of probes D {Da, Db} grasped in (1) and (2) and the set of probes D {Db, Dc} was taken, and probe Db was set as a candidate for primary estimation in the stopped state.

[0088] -Final determination in the moving state- (4) As shown in FIG. 14, since the probe information G-1 to G-m in probe G1 and probe Db are in the moving state, it is verified that they are in the "one set" state near (immediately after) the departure point o2 and near (immediately after) the arrival point d2, and in the "one set" state at the intermediate point, so as to ensure that they are substantially the same (in the vicinity) in the moving state.

[0089] (5) As shown in FIG. 15, for the probe information G-1 (accelerating after departure), probe information G-m (decelerating before arrival), probe information G-2 (steady running), and probe information G-3 (steady running) in probe G1, in the same manner as in Example 1, the spatio-temporal distances in the moving state between probe information G-1 and probe information Db-30, probe information G-2 and probe information Db-45, probe information G-3 and probe information Db-65, and G-m and probe information Db-88 were obtained. The results are shown in Tables 7 and 8.

[0090]

Table 7

[0091]

Table 8

[0092] From the results in Tables 7 and 8, the spatio-temporal distance of the moving states between probe information G-1 and probe information Db-30 is 0.1 (second·second), the spatio-temporal distance of the moving states between probe information G-2 and probe information Db-45 is 0.3 (second·second), the spatio-temporal distance of the moving states between probe information G-3 and probe information Db-65 is 0.3 (second·second), and the spatio-temporal distance of the moving states between probe information G-m and probe information Db-88 is 0.2 (second·second). Since all of them have a spatio-temporal distance of the moving state of 1.5 (second·second) or less, it can be seen that probe information G-1 and probe information Db-30, probe information G-2 and probe information Db-45, probe information G-3 and probe information Db-65, and G-m and Db-88 are all substantially the same (in the vicinity).

[0093] From the above results, the probe information (G-0, G-1, G-2, G-3, G-m, G-n) in probe G1 is on the same trajectory as the probe information (Db-30, Db-45, Db-55, Db-65, Db-75, Db-88, Db-89) in probe Db. Since both probe information is substantially the same (in the vicinity), it can be determined that they are probe information regarding the same moving object (they are a "set").

[0094] (Example 3) As shown in FIG. 16, each vehicle (head or single vehicle) is equipped with a plurality of in-vehicle devices D (Digital Tachograph) and in-vehicle device G2 (ETC 2.0). The mounting states of these in-vehicle devices are shown in FIG. 17. Among [a], [b], [c], and [d] in FIG. 17, the case of [a] is defined as the in-vehicle devices being "integrated". Example 3 is an example of extracting the vehicle in the state of [a] (integrated) when passing through a curve as shown in FIG. 18 while the vehicles with the mounting states of the in-vehicle devices in [a], [b], [c], and [d] in FIG. 17 are mixed. Since the in-vehicle device G2 (ETC 2.0) is mounted not only on large vehicles but also on ordinary vehicles, a large amount of information from ordinary vehicles is also acquired in [c]. In addition, in Example 3, an example at a curve with a high actual usage frequency is taken, but it can be similarly applied to a straight line.

[0095] As shown in Fig. 18, this is a case where the vehicle enters a curve at a speed of 50 km / h and maintains the speed (Article 15 of the Road Structure Ordinance, when the speed is 50 km / h, R = 100 m). The position information of in-vehicle unit D (Digital Tachograph) is acquired every 1 second and is at every 13.9 m. Since r = 100 m, it is 157 m for a quarter circle, and 157 / 13.9 = 11.3 pieces are acquired. In-vehicle unit G2 (ETC 2.0) acquires information every 200 m or when the cumulative change in the traveling direction is 45°. As the section for judgment, a curve with R = 100 m, approximately 471 m for 3 / 4 of a circle from P2 to P5, and approximately 140 m of the straight line P1 to P2 immediately before the curve, a total of approximately 611 m from P1 to P5, is targeted. First, when plotting the points acquired while the vehicle in the [a] state (same body) passes through P1 to P5, for in-vehicle unit G2 (ETC 2.0), they are g1, g2, ···, g7, and for in-vehicle unit D (Digital Tachograph), they are 1, 2, ···, 9, 10, ···, 21, ···, 32, ···, 43. As it is difficult to represent the overlapping with the time axis in this state, hereafter, as shown in Fig. 20 which is an enlarged view of Fig. 19 and part A of Fig. 19, P1 to P5 are represented in a form of being stretched into a straight line.

[0096] As shown in Fig. 20 which is an enlarged view of Fig. 19 and part A of Fig. 19, four vehicles α, β, γ, δ are traveling on the corresponding curve, and they are [c] (ordinary vehicle), [a], [c] (head), and [a] respectively. Judgment is made based on the passing point g2 of vehicle β as the reference axis. If it passes every 9 seconds at 50 km / h, the inter-vehicle distance is approximately 125 m - 15 m = 110 m. Near 35° north latitude, both latitude and longitude are 25 m per second. The relative longitude and relative latitude are relative values with the center point of the curve as 0.00, 0.00. The relative time is a relative value with the time of "β - g - 2" as 00:00:06.00.

[0097] Next, Fig. 21 is a flowchart showing an example of the process flow for discriminating that it is the same moving object by the discrimination method of the same moving object probe information in Embodiment 3. In the curve shown in FIG. 18, when four vehicles α, β, γ, and δ are running, and each is [c] (ordinary vehicle), [a], [c] (head), and [a], in regions 1 and 2, a substantially identical ("same body") state is determined as follows.

[0098] In step S11, in in-vehicle unit G2 (ETC2.0), when extracting the probe information in which the cumulative change in the traveling direction first becomes 45° in a certain section and designating g2 as a candidate, the process proceeds to step S12.

[0099] In step S12, when identifying vehicle β with the shortest spatio-temporal distance in g2 (region 1), the process proceeds to step S13.

[0100] Specifically, in g2 (region 1), from the following formula 3, the spatio-temporal distances between probe information β-g-2 and probe information β-d-15, between probe information β-g-2 and probe information β-d-16, between probe information β-g-2 and probe information β-d-17, between probe information β-g-2 and probe information β-d-18, between probe information β-g-2 and probe information β-d-19, and between probe information β-g-2 and probe information β-d-20 were respectively obtained. The results are shown in Table 9.

[0101] [Formula 3] TIFF0007704415000015.tif17165

[0102] [Table 9] From the results in Table 9, it can be seen that the minimum value of the spatio-temporal distance in region 1 is the spatio-temporal distance between probe information β-g-2 and probe information β-d-16 = 0.023 (second·second), and probe information β-g-2 and probe information β-d-16 with a spatio-temporal distance of 1.5 (second·second) or less are substantially identical (in the vicinity).

[0103] In step S13, when the vehicle β with the shortest spatio-temporal distance in g3 (area 2) is identified, the process proceeds to step S14.

[0104] Specifically, in g3 (area 2), from the above formula 3, the spatio-temporal distances between the probe information β-g-3 and the probe information β-d-20, between the probe information β-g-3 and the probe information β-d-21, between the probe information β-g-3 and the probe information β-d-22, between the probe information β-g-3 and the probe information β-d-23, between the probe information β-g-3 and the probe information β-d-24, and between the probe information β-g-3 and the probe information β-d-25 were respectively obtained. The results are shown in Table 10.

[0105]

Table 10

[0106] In step S14, when it is determined that the in-vehicle unit D and the in-vehicle unit G2 are in a substantially the same ("same body") state in the vehicle β, this process is completed.

Explanation of symbols

[0107] 100 Discrimination device for the same moving object probe information 101 Control unit 102 Main storage device 103 Auxiliary storage device 104 I / O interface 105 Communication interface 106 Input device 107 Output device 108 Display device 109 System bus 120 Communication function unit 130 Input function unit 140 Output function unit 150 Display function unit 160 Memory function unit 170 Control function unit 171 Discrimination unit

Claims

1. A method for determining that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving object, comprising: Among the plurality of pieces of said probe information, when position information X1 at time X in first probe information and position information X2 at substantially the same time as said time X in second probe information different from said first probe information are substantially the same, and when position information Y1 at time Y sampled next to said time X in said first probe information and position information Y2 at substantially the same time as said time Y in said second probe information are substantially the same, a determination step of determining that said first probe information and said second probe information are probe information regarding the same moving object; including in said determination step, when the spatio-temporal distance represented by the following formula 1 or the following formula 2 is equal to or less than a predetermined value, determining whether said position information X1 and said position information X2, or said position information Y1 and said position information Y2, are substantially the same; the spatio-temporal distance in a moving state is defined by the following formula 1, the spatio-temporal distance in a stopped state is defined by the following formula 2, characterized in that it is a method for determining probe information of the same moving object. 【Number 1】 【Number 2】

2. The method for determining probe information of the same moving object according to claim 1, wherein the number of samplings of said first probe information and the number of samplings of said second probe information are different from each other.

3. In said determination step, when there are three or more pieces of probe information determined to be probe information regarding the same moving object, among the three or more pieces of said probe information, the probe information having substantially the same position information at the time of the moving start point as the time at the moving start point and having substantially the same position information at any point from after the start of movement to the end of movement as the time at any point from after the start of movement to the end of movement in the probe information with a smaller number of samplings, is determined to be probe information regarding the same moving object together with the probe information with a smaller number of samplings, according to any one of claims 1 to 2.

4. An apparatus for determining that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving object, comprising: Among the plurality of pieces of said probe information, The position information X1 at time X in the first probe information and the position information X2 at a time substantially the same as the time X in the second probe information different from the first probe information are substantially the same, and when the position information Y1 at time Y sampled next to the time X in the first probe information and the position information Y2 at a time substantially the same as the time Y in the second probe information are substantially the same, discriminating means for discriminating that the first probe information and the second probe information are probe information regarding the same moving body, having in the discriminating means, when the spatio-temporal distance represented by the following formula 1 or the following formula 2 is equal to or less than a predetermined value, it is determined whether the position information X1 and the position information X2, or the position information Y1 and the position information Y2 are substantially the same, the spatio-temporal distance in the moving state is defined by the following formula 1, A discriminator for probe information of the same moving body, characterized in that the spatio-temporal distance in the stopped state is defined by the following formula 2. [Number 3] [Number 4]

5. A program for discriminating that at least two pieces of probe information included in a plurality of pieces of probe information are probe information regarding the same moving body, included in a plurality of said probe information, the position information X1 at time X in the first probe information and the position information X2 at a time substantially the same as the time X in the second probe information different from the first probe information are substantially the same, and when the position information Y1 at time Y sampled next to the time X in the first probe information and the position information Y2 at a time substantially the same as the time Y in the second probe information are substantially the same, a discriminating process for discriminating that the first probe information and the second probe information are probe information regarding the same moving body, causing a computer to perform in the discriminating process, when the spatio-temporal distance represented by the following formula 1 or the following formula 2 is equal to or less than a predetermined value, it is determined whether the position information X1 and the position information X2, or the position information Y1 and the position information Y2 are substantially the same, the spatio-temporal distance in the moving state is defined by the following formula 1, A discriminator program for probe information of the same moving body, characterized in that the spatio-temporal distance in the stopped state is defined by the following formula 2. 【Number 5】 【Number 6】

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