JP6242595B2 - Information processing system, information processing apparatus, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing system, an information processing apparatus, an information processing method, and a program, and more particularly, to an information processing system, an information processing apparatus, an information processing method, and a program that output information indicating a traffic evaluation value for each traffic direction.

  The travel speed calculated from the probe traffic information (running track data, etc.) collected from the car navigation system is used for road traffic analysis. Along with the diversification of system forms in recent years, the specifications and types of probe traffic information collected by each subject have been diversified, and it is expected that road administration management will be enhanced by road traffic analysis utilizing each data characteristic. .

  2. Description of the Related Art Conventionally, a technique for classifying traffic information for each lane and displaying the traffic information separately for each lane is known (see, for example, Patent Document 1).

JP 2007-71579 A

  However, the technique of Patent Document 1 cannot classify traffic information of a place having only one lane because the classification standard is a lane. Therefore, the technique of Patent Document 1 cannot perform sufficient road traffic analysis.

  The present invention has been made in view of the above problems. An object of the present invention is to obtain a traffic evaluation value for each traffic direction determined by a combination of an approach direction and a leaving direction at a branch point regardless of the number of lanes.

  An information processing system according to an embodiment of the present invention includes an information acquisition unit for acquiring probe traffic information including a plurality of passing link data including link specifying information for specifying a link and a traffic log of the link; Calculating means for setting an evaluation section including the branch point for each traffic direction determined by a combination of an approach direction and a leaving direction, and calculating a traffic evaluation value of the evaluation section based on the traffic log corresponding to the evaluation section; Determination means for determining the traffic direction based on a combination of a plurality of link specifying information, a totaling means for totaling the traffic evaluation values for each traffic direction, and output information indicating a totaling result of the totaling means. Output control means for outputting.

  According to the present invention, regardless of the number of lanes, the traffic evaluation value for each traffic direction determined by the combination of the approach direction and the exit direction at the branch point can be obtained.

The block diagram which shows the structure of the information processing system 1 of this embodiment. The figure which shows the data structure of the probe traffic information of this embodiment. The flowchart of the information processing of this embodiment. The schematic diagram of the evaluation area of this embodiment. The figure which shows the map image containing the output information of the 1st example of S1-106 of this embodiment. The figure which shows the map image containing the output information of the 2nd example of S1-106 of this embodiment. The figure which shows the map image containing the output information of the 3rd example of S1-106 of this embodiment. The figure which shows the map image containing the output information of the 4th example of S1-106 of this embodiment.

  The present embodiment will be described with reference to the drawings.

  A configuration of the information processing system 1 according to the present embodiment will be described. FIG. 1 is a block diagram illustrating a configuration of an information processing system 1 according to the present embodiment.

  As illustrated in FIG. 1, the information processing system 1 includes a server 10 and a network 50. Servers 10 can communicate with each other via a network 50. The number of servers 10 may be one or plural. The network 50 may be a wired network or a wireless network.

  The server 10 includes a server control unit 12, a server storage unit 14, and a server communication unit 16.

  The server control unit 12 includes a server communication control unit 120, a server information acquisition unit 121, a server output control unit 122, a calculation unit 124, a determination unit 126, and a totalization unit 128. Each unit of the server control unit 12 will be described later.

  The server storage unit 14 stores data handled by the server control unit 12. For example, the server storage unit 14 includes route network information (for example, information including nodes and links of the traffic network), map information, probe traffic information, and user information (for example, a user ID (Identification) unique to the user). And a program executable by the server control unit 12 are stored.

  The server communication unit 16 is a communication interface between the server 10 and the network 50.

  FIG. 2 is a diagram illustrating a data structure of probe traffic information according to the present embodiment.

  As shown in FIG. 2, the probe traffic information includes a plurality of passing link data. Each passing link data includes a route ID (route specifying information for specifying the route), a passing order (information indicating the time series order of the passing link data), and a link ID (link specifying information for specifying a link in the route network information). And an entry time (information indicating the time when the mobile object has entered the link) and an exit time (information indicating the time when the mobile object has exited the link).

  Information processing according to the present embodiment will be described. FIG. 3 is a flowchart of information processing according to this embodiment.

  <S1-100> The server information acquisition unit 121 acquires probe traffic information. The probe traffic information includes a plurality of passing link data. Each passing link data includes a route ID, a link ID, and a traffic log of the link (for example, passing order, entry time, and exit time). That is, in S1-100, a route ID for each passing link, a link ID, and a traffic log (passing order, entry time, and exit time) are obtained.

  <S1-102> The calculation unit 124 evaluates the branch point at each branch point for each traffic direction determined by a combination of the approach direction in which the mobile body enters the link and the exit direction in which the mobile body exits the link. A section is set, and the traffic evaluation value of the evaluation section is calculated based on the traffic log corresponding to the evaluation section.

  The branch point is a point where the route branches in the approach direction or the exit direction (see FIG. 4). The branching point is, for example, an intersection, an entrance / exit of a highway, a junction or a ramp.

  Intersections often become bottlenecks in traffic jams that occur in cities. Of these, there are many examples in which traffic congestion can be alleviated by changing the intersection structure (e.g., extending the right turn lane) or reviewing signal control. In order to take these measures, it is important to understand the required time and traffic volume for each direction, such as turning left and right. Therefore, when analyzing a factor of a bottleneck of traffic congestion occurring in a city (a factor with a poor traffic evaluation value), it is preferable to set a branch point for which a traffic evaluation value is calculated as an intersection.

  The traffic evaluation value is an evaluation value of a traffic volume (at least one of a temporal traffic volume and a quantitative traffic volume) at a branch point. The traffic evaluation value is, for example, branch point passage time (time required for the mobile body to pass through the branch point), branch point passage number (number of times the mobile body has passed the branch point), branch point stop number of times (mobile body At least one of the number of times of stopping at the branch point).

  Here, an example of a traffic evaluation value calculation method will be described.

  The calculation unit 124 sets an evaluation section including a branch point.

  For example, the calculation unit 124 includes a common section from 200 m before the signal to the signal (a section determined by following the link in the direction opposite to the traveling direction starting from the signal node of the route network information) and the signal 50 m ahead of the signal. A total of 250 m of the extended section is set as the evaluation section (see FIG. 4).

  Next, the calculation unit 124 calculates a traffic evaluation value (an intersection passing time as an example) in the evaluation section.

  For example, the calculation unit 124 calculates the time required for the moving body to pass through the evaluation section. Here, since the beginning and end of the evaluation section end in the middle of the link, the calculation unit 124 linearly interpolates the required time of the link and adds it to the required time of the evaluation section. Next, the calculation unit 124 calculates a value obtained by subtracting a predetermined free flow (for example, 30 km / h) from the passage time of the evaluation section. The subtracted value is obtained as the intersection passing time.

  <S1-104> The determination unit 126 determines the traffic direction based on a combination of a plurality of link specifying information.

  For example, based on the link ID (link IDs “1000” and “1100” in FIG. 2), the determination unit 126 determines the traffic based on the angle formed by the links with the link IDs “1000” and “1100” in the route network information. The direction (the traffic direction determined by the combination of the entry direction and the exit direction when entering the link with the link ID “1000” and leaving the link with the link ID “1100”) is determined.

  <S1-104> The summation unit 128 sums up the traffic evaluation values calculated by the calculation unit 124 in S1-102 for each traffic direction at the branch point in units of link groups or in units of links. .

  <S1-106> The server output control unit 122 outputs output information indicating a totaling result of the totaling unit 128 (that is, S1-104).

  In the first example of S1-106, the server output control unit 122 outputs output information in which information indicating the total result is arranged at a position on the map image corresponding to the branch point (hereinafter referred to as “corresponding position”). More specifically, as illustrated in FIG. 5, the server output control unit 122 outputs output information in which information 5 a and 5 b indicating the total result for each traffic direction is arranged at the corresponding position X on the map image. . This makes it clear to the user who has obtained the output information which position on the map the traffic evaluation value is.

  In the second example of S <b> 1-106, the server output control unit 122 outputs output information in which information indicating the counting result is arranged at a corresponding position on the map image in a manner corresponding to the traffic direction. More specifically, as shown in FIG. 6, the server output control unit 122 displays the total result for each traffic direction in the mode (solid line arrow or broken line arrow) according to the traffic direction at the corresponding position X on the map image. Output information in which the indicated information 6a and 6b is arranged is output. Thereby, it becomes easy for the user who obtained the output information to distinguish the traffic evaluation value for each traffic direction.

  In S1-106, the example in which the aspect according to the traffic direction is the solid line arrow and the broken line arrow has been described, but the scope of the present invention is not limited to this. This mode can be selected from at least one of the color, length, width, and shape of a symbol (arrow in FIG. 6) indicating the total result. Moreover, you may determine this aspect according to a user's designation | designated.

  In the third example of S1-106, the server output control unit 122 outputs output information in which information indicating the total result is arranged at an offset position that is shifted by a predetermined offset from the corresponding position on the map image. More specifically, as shown in FIG. 7, the server output control unit 122 is information indicating the total result for each traffic direction at offset positions Oa and Ob that are shifted from the corresponding position X on the map image by a predetermined offset. Output information in which 7a and 7b are arranged is output. Thereby, it becomes easy for the user who has obtained the output information to visually recognize the traffic evaluation value for each traffic direction.

  In the fourth example of S1-106, the server output control unit 122 outputs output information in which information indicating the aggregation result is arranged in a manner corresponding to the type of traffic evaluation value. More specifically, as shown in FIG. 8, the server output control unit 122 sets the corresponding position X on the map image to an aspect (solid arrow) according to the type of traffic evaluation value (for example, a branch point passage time). Outputs output information in which information 8a indicating the totaling result is arranged and information 8b indicating the totaling result is arranged in a mode (broken line with end points) according to the type of traffic evaluation value (for example, the number of stops at the branch point) To do. This makes it easy for the user who has obtained the output information to distinguish between the types of traffic evaluation values.

  A modification of this embodiment will be described.

  In the first modified example, the totaling unit 128 totals the traffic evaluation values for each type of moving body (for example, vehicle type) (that is, for each combination of traffic direction and vehicle type) in addition to the traffic direction.

  In the second modification, the calculation unit 124 includes information different from the probe traffic information (for example, information obtained by manual measurement or information obtained from a sensor installed on the road), road information, in addition to the entry time and the advance time. A traffic evaluation value is calculated based on at least one of (for example, information indicating the number of lanes, presence / absence of a right turn lane, road type and width) and environmental information (for example, time zone and day of the week). Thereby, the movement (for example, movement by foot) that is not included in the probe traffic information can be included in the traffic evaluation value.

  In the third modification, the traffic evaluation value is at least one of speed, link passage time (time when free flow passage time is not subtracted), and total branch point passage time.

  In the fourth modified example, the calculation unit 124 may set all nodes included in the route network information as evaluation targets, or may set nodes whose road type or width satisfies a predetermined condition as evaluation targets.

  In the fifth modification, the output control unit 122 receives the user designation received from the user when the output information is displayed on the display of the terminal device (for example, a branch point to be shown on the map image, a traffic direction or The output information may be output so that a total result displayed on the display changes according to an operation for specifying a display format (table or graph) (for example, click or enlargement on a map image). .

  At least a part of the information processing system 1 according to the present embodiment may be configured by hardware or software. When configured by software, a program for realizing at least a part of the functions of the information processing system 1 may be stored in a recording medium such as a flexible disk or a CD-ROM, and read and executed by a computer. The recording medium is not limited to a removable medium such as a magnetic disk or an optical disk, but may be a fixed recording medium such as a hard disk device or a memory.

  Further, a program that realizes at least a part of the functions of the information processing system 1 according to the present embodiment may be distributed via a communication line (including wireless communication) such as the Internet. Further, the program may be distributed in a state where the program is encrypted, modulated or compressed, and stored in a recording medium via a wired line such as the Internet or a wireless line.

  In addition, this invention is not limited to embodiment mentioned above, It deform | transforms and implements a component in the range which does not deviate from the summary. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete a some component from all the components shown by embodiment mentioned above. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Information processing system 10 Server 12 Server control part 120 Server communication control part 121 Server information acquisition part 122 Server output control part 124 Calculation part 126 Determination part 128 Total part 14 Server storage part 16 Server communication part

Claims (9)

Information acquisition means for acquiring probe traffic information including a plurality of passing link data including link specifying information for specifying a link and a traffic log of the link;
Calculation means for setting an evaluation section equally for a plurality of traffic directions determined by a combination of an approach direction and a leaving direction at a branch point, and calculating a traffic evaluation value of the evaluation section based on the traffic log corresponding to the evaluation section When,
Before Symbol traffic direction each, and aggregation means to aggregate the traffic evaluation value,
Output control means for outputting output information indicating the totaling result of the totaling means ,
The evaluation section is a first predetermined distance section from before the branch point to the branch point and a second predetermined distance section from the branch point to the branch point destination.
It shall be the said information processing system. The traffic evaluation value indicates a branch point passage time which is a time required for the mobile body to pass through the branch point and a branch point passage number which is the number of times the mobile body passes through the branch point.
The information processing system according to claim 1, wherein the output control unit outputs output information in which information indicating the aggregation result is arranged at a corresponding position on a map image corresponding to the branch point.   3. The information processing according to claim 2, wherein the output control unit outputs the output information indicating the aggregation result in a manner corresponding to the traffic direction when there are a plurality of aggregation results to be indicated at the corresponding position. system.   The information processing system according to claim 3, wherein the output control unit outputs the output information in which information indicating at least one total result is arranged at an offset position shifted from the corresponding position by a predetermined offset. The information processing system according to claim 2 , wherein the output control unit outputs the output information indicating the aggregation result in a mode according to the type of the traffic evaluation value. The traffic log includes the entry time that the moving body has entered into the link, and the exit time that the moving body has exited from the link,
It said calculation means, based on the plurality of sets of the entry time and the exit time, calculates the traffic evaluation value, the information processing system according to any one of claims 2 to 5. Information acquisition means for acquiring probe traffic information including a plurality of passing link data including link specifying information for specifying a link and a traffic log of the link;
Calculation means for setting an evaluation section equally for a plurality of traffic directions determined by a combination of an approach direction and a leaving direction at a branch point, and calculating a traffic evaluation value of the evaluation section based on the traffic log corresponding to the evaluation section When,
Before Symbol traffic direction each, and aggregation means to aggregate the traffic evaluation value,
Output control means for outputting output information indicating the totaling result of the totaling means ,
The evaluation section is a first predetermined distance section from before the branch point to the branch point and a second predetermined distance section from the branch point to the branch point destination.
It shall be the said information processing apparatus. An information acquisition means for acquiring probe traffic information including a plurality of passing link data including link specifying information for specifying a link and a traffic log of the link;
The calculation means sets the evaluation section equally for a plurality of traffic directions determined by the combination of the approach direction and the exit direction at the branch point, and calculates the traffic evaluation value of the evaluation section based on the traffic log corresponding to the evaluation section. A calculating step ;
Collecting meter means, for each of the transport direction, a step of aggregating the traffic evaluation value,
An output control means, comprising the step of outputting output information indicating the totaling result of the totaling means ,
The evaluation section set by the calculation means is a first predetermined distance section from before the branch point to the branch point and a second predetermined distance section from the branch point to the branch point destination.
It shall be the said information processing method. On the computer,
An information acquisition means for acquiring probe traffic information including a plurality of passing link data including link specifying information for specifying a link and a traffic log of the link;
The calculation means sets the evaluation section equally for a plurality of traffic directions determined by the combination of the approach direction and the exit direction at the branch point , and calculates the traffic evaluation value of the evaluation section based on the traffic log corresponding to the evaluation section. A calculating step ;
A counting means for counting the traffic evaluation value for each traffic direction;
Output control means, and outputting output information indicating the counting result of the tallying unit, is executed,
The calculation means determines the evaluation interval so that the evaluation interval is a first predetermined distance interval from the branch point to the branch point and a second predetermined distance interval from the branch point to the branch point destination. Set,
It shall be the feature to the program.