JP5942496B2 - Level crossing time calculation system, level crossing time calculation method, and level crossing time calculation program - Google Patents

Description

  The present invention relates to a crossing crossing time calculation system, a crossing crossing time calculation method, and a crossing crossing time calculation program.

  As one of the technologies related to the route calculation of the travel route of a vehicle, when there is a crossing at any of a plurality of links that interconnect a plurality of nodes that indicate the position of the travel road of the vehicle, the vehicle passes through the crossing. The level crossing until the vehicle passes the level crossing by multiplying the time crossing data (coefficient data) corresponding to the estimated time by the time (cost) when the vehicle travels on the link with the level crossing It has been proposed to calculate the passage time (see, for example, Patent Document 1). In this technique, the ratio of the closed period for each time zone at each level crossing is acquired by actual measurement or the like, and the level crossing data is calculated based on the acquired ratio of the closed period.

JP 2001-304877 A

  In the above-mentioned conventional technology, since it is necessary to obtain the ratio of the closing period for each time zone at each level crossing by actual measurement or the like, when the train schedule is changed, the ratio of the closing period of the level crossing is measured again. It was necessary to do so. In addition, the actual crossing time of a vehicle includes not only the opening and closing time of the level crossing but also various traffic factors in the vicinity of the level crossing (for example, there is no traffic jam caused by a level crossing, roads near the level crossing In other words, there is a problem from the viewpoint of the accuracy of the crossing passage time for calculating the crossing passage time only for a link having a crossing.

  The present invention has been made in view of the above, and it is not necessary to actually measure the ratio of the closing period of a crossing, and the crossing passing time calculation system that can improve the accuracy of the crossing passing time, It is an object of the present invention to provide a crossing crossing time calculation method and a crossing crossing time calculation program.

In order to solve the above-described problem and achieve the object, the crossing time calculation system according to claim 1 includes link information of each link connecting a plurality of nodes indicating a road position to each other, and a crossing regarding the crossing. Map information storage means for storing map information including information, link travel time storage means for storing a link travel time that is a time required for the vehicle to travel each link, and the crossing information from the map information storage means The crossing information acquisition means for acquiring the crossing, and any one of the links located on the opposite side of the traveling direction of the vehicle with respect to the link with the crossing corresponding to the crossing information acquired by the crossing information acquisition means a link a road for a link, a link that is directly in contact to the link with the crossing was and along the traveling direction of the link with the crossing A link that is a link or that is in direct contact with the link with the level crossing only through the link along the traveling direction of the link with the level crossing, and the progress of the link with the level crossing A determination unit that determines whether the link is a link along a direction based on the link information acquired from the map information storage unit, and the determination unit corresponds to the crossing information. When it is determined that any of the links located on the opposite side of the traveling direction of the vehicle from the link with the level crossing is a link along the road with respect to the link with the level crossing, the link travel time of the link with the level crossing And the link travel time of the link along the road with respect to the link with the crossing is obtained from the link travel time storage means, and based on the acquired link travel time. Te, comprising calculating means for calculating a crossing passage time until passing through the railroad crossing, the.

The crossing passage time calculation system according to claim 2 and the crossing passage time calculation system according to claim 1, wherein the determination means is on the opposite side of the traveling direction of the vehicle with respect to a link having a crossing corresponding to the crossing information. When it is determined that any of the links located is not a link on the road with respect to the link with the level crossing, any of the links located on the opposite side of the traveling direction of the vehicle with respect to the link with the level crossing A link of two roads to a certain link, a link that is in direct contact with the link having the level crossing, and a portion of the link in the traveling direction of the vehicle is a link of the link having the level crossing A two-passage link that does not follow the direction of travel of the link with the level crossing other than that along the direction of travel, or the direction of travel of the link with the level crossing A link that is indirectly in contact with the link with the level crossing only through the link along the link, and the portion of the link on the traveling direction side of the vehicle is along the traveling direction of the link with the level crossing, It is determined based on the link information acquired from the map information storage means whether the other part is a link of a two-way difference that does not follow the traveling direction of the link with the crossing, and the calculating means The determination means determines that one of the links located on the opposite side of the vehicle traveling direction from the link with the crossing corresponding to the crossing information is a link of two differences with respect to the link with the crossing. The link travel time of the link with the level crossing and the link travel time of the link of the two-way difference with respect to the link with the level crossing from the link travel time storage means. Tokushi, based on the acquired link travel time, calculates the crossing transit time.

  The crossing passage time calculation system according to claim 3 is the crossing passage time calculation system according to claim 1 or 2, wherein the determination means is a traveling direction of the vehicle rather than a link having a crossing corresponding to the crossing information. As each link located on the opposite side, the determination is performed for a link in which the node on the traveling direction side of the vehicle in each link is located within a predetermined distance from the crossing.

The level crossing transit time calculation method according to claim 4, wherein the level crossing information acquisition means stores map information including link information of each link interconnecting a plurality of nodes indicating road positions and level crossing information regarding the level crossing. The crossing information acquisition step for acquiring the crossing information from the map information storage means, and the determination means are on the opposite side of the traveling direction of the vehicle from the link with the crossing corresponding to the crossing information acquired in the crossing information acquisition step. One of the links located is a link to the link with the level crossing that is in direct contact with the link with the level crossing, and in the traveling direction of the link with the level crossing Indirect contact with the link with the level crossing only through the link along the road that is the link along, or the link along the direction of travel of the link with the level crossing That is a link, and the road Nari link is a link along the traveling direction of the link with the crossing, whether a determination step of determining, based on the link information acquired from the map information storage means In the determination step, any one of the links located on the opposite side of the vehicle traveling direction with respect to the crossing link corresponding to the crossing information is a road link to the crossing link. If it is determined that there is a link, the link travel time storing means for storing the link travel time, which is the time required for the vehicle to travel each link, and the link travel time of the link with the crossing and the link with the crossing The link travel time of the road-like link is acquired, and the crossing crossing time until passing the crossing is calculated based on the acquired link travel time. Including a calculation step of leaving, the.

A crossing crossing time calculation program according to claim 5, wherein the computer stores map information including map information including link information of each link connecting a plurality of nodes indicating road positions to each other and crossing information regarding the crossing. Crossing information acquisition means for acquiring the crossing information from a storage means;
Any one of the links located on the opposite side of the traveling direction of the vehicle with respect to the crossing information corresponding to the crossing information acquired by the crossing information acquisition means is a road link to the link with the crossing. A link that is in direct contact with the link at the level crossing and that is a link along the direction of travel of the link at the level crossing, or the direction of travel of the link at the level crossing Whether the link is in direct contact with the link with the level crossing only through the link along the road, and the link along the traveling direction of the link with the level crossing . The determination means for determining based on the link information acquired from the map information storage means, and the progress of the vehicle by the determination means than the link with the crossing corresponding to the crossing information. If any of the links located on the opposite side is determined to be a road link to the link with the crossing, the link travel time of the link with the crossing and the road to the link with the crossing The link travel time of the link is acquired from the link travel time storage means for storing the link travel time which is the time required for the vehicle to travel each link, and the level crossing is obtained based on the acquired link travel time. A crossing crossing time calculating program for functioning as a calculating means for calculating a crossing crossing time until passing.

  According to the level crossing passage time calculation system according to claim 1, the level crossing time calculation method according to claim 4, and the level crossing time calculation program according to claim 5, not only a link with a level crossing but also By calculating the crossing time for a given link in consideration of the link on the road, it is possible to calculate the accurate crossing time, and to provide useful information when supporting the travel route of the vehicle Can do. Further, it is possible to calculate a crossing passing time based on a link travel time that can be easily acquired as probe information, and it is not necessary to actually measure the closing period of a crossing that cannot be acquired as probe information. In addition, even when the train schedule is changed, an accurate crossing time can be calculated.

  According to the system for calculating the crossing crossing time according to claim 2, the crossing crossing time is calculated in consideration of not only the link with the crossing but also the link of the two roads with respect to the link with the crossing. The level crossing passing time can be calculated.

  According to the crossing time calculation system according to claim 3, it is possible to set and determine an appropriate distance according to various situations around the crossing, and to obtain an accurate crossing time according to the situation. Can be calculated.

It is a block diagram which illustrates a level crossing passage time calculation system concerning an embodiment of the invention. It is the table | surface which illustrated the link travel time table. It is a flowchart of a level crossing passage time calculation process. It is the figure which illustrated the peripheral situation of a level crossing used as a processing target of level crossing passage time calculation processing. It is a table | surface which illustrated the level crossing passage time table.

  Hereinafter, embodiments of a crossing crossing time calculation system, a crossing crossing time calculation method, and a crossing crossing time calculation program according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited by this embodiment.

(Constitution)
First, the structure of the level crossing passage time calculation system according to the present embodiment will be described. FIG. 1 is a block diagram illustrating a level crossing passage time calculation system according to this embodiment. As shown in FIG. 1, a level crossing passage time calculation system 1 includes a level crossing passage time calculation device 10 and an in-vehicle device 20 mounted on the vehicle 2. Are connected via a network 3 so that they can communicate with each other.

(Configuration-In-vehicle device)
As shown in FIG. 1, the in-vehicle device 20 is a vehicle information output unit that outputs vehicle information. Specifically, the in-vehicle device 20 includes a data recording unit (not shown) that records various data related to the vehicle 2 and an output unit (not shown) that outputs various information, and is stored in the data recording unit (not shown). The vehicle information is output to the crossing passage time calculation device 10 at an arbitrary timing, or the crossing passage time input from the crossing passage time calculation device 10 is output to the driver of the vehicle 2. Here, the “vehicle information” is information related to the vehicle 2, for example, vehicle type data related to the type of the vehicle 2, and travel history related to the travel content of the vehicle 2 (for example, the current position of the vehicle, the current time, the vehicle speed, etc.) It is configured to include data. However, since the in-vehicle device 20 can be configured as, for example, a known navigation device, a detailed description thereof is omitted.

(Configuration-Railroad crossing time calculation device)
The crossing crossing time calculating device 10 is a crossing crossing time calculating means for calculating a crossing crossing time, and includes a communication unit 11, a control unit 12, and a data recording unit 13.

(Configuration-Railroad crossing time calculation device-Communication unit)
The communication unit 11 is a communication unit that communicates with the in-vehicle device 20 via the network 3. Specifically, the communication unit 11 receives vehicle information output from the in-vehicle device 20 of the vehicle 2 via the network 3, or transmits the level crossing passage time calculated by the calculation unit 12 d described later via the network 3. To the vehicle 2. As this communication part 11, the wireless communication means for well-known VICS (trademark) systems via FM multiplex broadcasting and a beacon can be used, for example.

(Configuration-Railroad crossing time calculation device-Control unit)
The control unit 12 is a control unit that controls the crossing passage time calculation device 10, and specifically, a CPU, various programs that are interpreted and executed on the CPU (basic control programs such as an OS, and startup on the OS) And an internal memory such as a RAM for storing programs and various types of data. In particular, the crossing passage time calculation program according to the present embodiment is installed in the crossing passage time calculation device 10 via an arbitrary recording medium or the network 3, thereby substantially configuring each unit of the control unit 12.

  The control unit 12 includes a crossing information acquisition unit 12a, a link information acquisition unit 12b, a determination unit 12c, and a calculation unit 12d in terms of functional concept.

  The crossing information acquisition unit 12a is a crossing information acquisition unit that acquires crossing information described later from a map information database (hereinafter referred to as "DB"). The link information acquisition unit 12b is a link information acquisition unit that acquires link information described later from a map information DB 13a described later. The determination unit 12c is a determination unit that determines whether a link that connects a plurality of nodes indicating the position of a road corresponds to a link type that will be described later with respect to a link at a level crossing. The calculating unit 12d is a calculating unit that calculates a crossing passing time from a predetermined link until the crossing passes. Details of processing executed by each component of the control unit 12 will be described later.

(Configuration-Railroad crossing time calculation device-Data recording unit)
The data recording unit 13 is a recording unit that records a program and various data necessary for the operation of the crossing passage time calculating device 10, and is configured using, for example, a hard disk (not shown) as an external recording device. However, any other recording medium including a magnetic recording medium such as a magnetic disk, an optical recording medium such as a DVD or a Blu-ray disc, or a semiconductor recording medium such as a flash memory may be used instead of or together with the hard disk. Can do.

  The data recording unit 13 includes a map information DB 13a, a link travel time table 13b, and a crossing passing time table 13c.

  The map information DB 13a is map information storage means for storing map information. "Map information" is information necessary for specifying various positions including intersections and temporary stop points. For example, node data (node numbers and coordinates) related to each node set on a road, feature data (Signals, road signs, guardrails, buildings, etc.), terrain data, etc. The map information includes link information and crossing information. “Link information” is information related to each link connecting a plurality of nodes to each other. For example, link ID, connection node number, road coordinate, road type, road type, link type, number of lanes, traveling direction, travel regulation, etc. It is configured to include. Here, the “link type” is a type of link set based on a predetermined condition, and specifically, “a road link”, “a two-way link”, “a road and two-way difference”. “Links that are not roads”. The “link along the road” is a link that is headed if the vehicle 2 travels naturally when traveling from one link to another link. A “two-way link” is a link connected to another link without branching. “Links that are not roads or links that are not two-way differences” are links that do not belong to either road links or links that are two-way differences. The setting of these three links is specifically set and registered in advance in the map information DB 13a, or is set by the control unit 12 based on known analysis logic of predetermined analysis software. Further, “crossing information” is information related to a crossing, and includes, for example, a crossing number and a position of a crossing.

  The link travel time table 13b is a link travel time storage unit that stores a link travel time that is a time required for the vehicle 2 to travel on each link. FIG. 2 is a table illustrating the link travel time table 13b. As shown in FIG. 2, in the link travel time table 13b, an item “link ID”, an item “link name”, an item “link travel time”, and information corresponding to each item are stored in association with each other. ing. The information stored corresponding to the item “link ID” is information for specifying the link ID. The information stored corresponding to the item “link name” is information for specifying the name of the link. The information stored corresponding to the item “link travel time” is information specifying the link travel time. “Link travel time” is the time (travel time) for the vehicle 2 to pass through each link. This link travel time is acquired from the in-vehicle device 20 of each vehicle 2 via the communication unit 11, for example, and stored as an average value.

  The crossing crossing time table 13c is a crossing crossing time storage means for storing the crossing crossing time calculated by the calculation unit 12d. Details of the structure of the crossing passage time table 13c will be described later.

(processing)
Next, a crossing crossing time calculation process executed by the crossing crossing time calculating apparatus 10 configured as described above will be described. FIG. 3 is a flowchart of the crossing crossing time calculation process (in the following description of each process, step is abbreviated as “S”). This level crossing passage time calculation process is repeatedly executed at a predetermined cycle after the power is supplied to the level crossing passage time calculation device 10, for example.

  After the level crossing passage time calculating device 10 is activated, the level crossing information acquisition unit 12a acquires the level crossing information stored in the map information DB 13a (SA1). For example, the crossing information acquisition unit 12a acquires the crossing information in a predetermined order (for example, the order with the lowest crossing number) among the crossing information stored in the map information DB 13a. FIG. 4 is a diagram exemplifying the surrounding situation of a level crossing that is a processing target of a level crossing passage time calculation process (in the following description, the X direction in FIG. 4 is the horizontal direction or the horizontal direction, and the Y direction in FIG. 4 is Called the vertical direction). In the example of FIG. 4, the crossing information of the crossing with the crossing number 1 is acquired.

  Returning to FIG. 3, the link information acquisition unit 12b acquires link information from the map information DB 13a (SA2). Specifically, the link information acquisition unit 12b acquires link information of a link with a crossing corresponding to the crossing information acquired in SA1, and a predetermined distance from the crossing corresponding to the crossing information acquired in SA1. The link information of a link within a range of (for example, 500 m or the like) and located on the opposite side of the traveling direction of the vehicle 2 from the link with the level crossing is acquired from the map information DB 13a. In the example of FIG. 4, link information of links A to H located on the right side of the railroad crossing is acquired.

  Returning to FIG. 3, the calculation unit 12d acquires the link travel time of the link with the crossing from the link travel time table 13b based on the link information of the link with the crossing acquired in SA2, and the acquired link The travel time is set as the initial value of the crossing time (SA3). In the example of FIG. 4, the link travel time of link A = 20 sec is acquired from the link travel time table 13b based on the link ID (for example, 1001) of the link A that is a crossing link, and the initial value of the crossing crossing time. Set as

  Returning to FIG. 3, in the loop of SA4 and SA8, the determination unit 12c sequentially performs the processing of SA5 to SA7 for each link within a predetermined distance from the crossing among the links corresponding to the link information acquired in SA2. Do. Hereinafter, the link to be processed is referred to as “target link”.

  In this loop, first, it is determined based on the link information acquired from the map information DB 13a whether the target link is a road link (SA5). Here, “link along the road” means a road link with respect to a link with a level crossing, and directly a link with a road directly touching a link with a level crossing. And a road link that is in direct contact with the direct link. In the example of FIG. 4, when the target link is either the link B or the link C, it is determined that the link is a road, and when the target link is any of the other links, the road is It is determined that the link is not.

  Returning to FIG. 3, when it is determined that the target link is a road link (SA5, Yes), the calculation unit 12d calculates the target from the link travel time table 13b based on the link information acquired in SA2. The link travel time of the link is acquired, and the crossing passage time is updated by adding the link travel time of the acquired target link to the initial value of the crossing passage time set in SA3 (SA6). 2 and 4, when the target link is the link B, the link travel time of the link B = 10 sec is acquired from the link travel time table 13b based on the link ID (for example, 1002) of the link B. By adding the obtained link travel time of the link B = 10 sec to the crossing passing time = 20 sec, the crossing passing time is updated to 30 sec. Then, returning to SA4 in FIG. 3, SA5 to SA7 are repeated again with another link as the target link.

  On the other hand, when it is determined that the target link is not a road link (SA5, No), the determination unit 12c determines whether the target link is a two-way link from the map information DB 13a. (SA7). Here, the “two-way link” means a two-way link with respect to a link with a level crossing. A road link and a two-way road link directly in contact with the above-described road link are included. In the example of FIG. 4, when the target link is the link D, it is determined that the link is a two-difference link, and when the target link is one of the other links, the link is not a two-difference link. Determined.

  Returning to FIG. 3, when it is determined that the link is a two-way link (SA7, Yes), the link travel time of the next link is acquired from the link travel time table 13b and updated in the previous SA6. The crossing passage time is updated by adding the acquired link travel time to the crossing passage time (SA6). 2 and 4, when the target link is the link D, the link travel time of the link D = 15 sec is acquired from the link travel time table 13b based on the link ID (for example, 1004) of the link D. The crossing passage time is updated to 45 seconds by adding the acquired link travel time of the link D = 15 seconds to the crossing passage time of 30 seconds. Then, returning to SA4 in FIG. 3, SA5 to SA7 are repeated again with another link as the target link. Also, when it is determined that the target link is not a link of two differences (SA7, No), the process returns to SA4, and SA5 to SA7 are repeated again with another link as the target link.

  As described above, in the loop of SA4 and SA8, among the links corresponding to the link information acquired in SA2, the processing from SA5 to SA7 is sequentially performed for all the links within a predetermined distance from the level crossing, and then the control is performed. The unit 12 stores information related to the crossing passage time calculated by the calculation unit 12d in the crossing passage time table 13c (SA9).

  Here, FIG. 5 is a table illustrating the level crossing passage time table 13c. As shown in FIG. 5, the level crossing passing time table 13c corresponds to the items “level crossing No”, item “crossing crossing time”, item “crossing crosslink”, and a plurality of items “crossing approach link”. Are stored in association with each other. The information stored corresponding to the item “crossing No.” is crossing identification information for uniquely identifying a crossing. The information stored corresponding to the item “crossing passage time” is information for specifying the crossing passage time. The information stored in association with the item “crossing crosslink” is information relating to a link with a crossing. This item “crossing cross-link” is further configured to include a sub-item “link ID”, a sub-item “direction”, and a sub-item “link travel time”. Stored in association with. Information stored in association with the small item “link ID” is a link ID. The information stored corresponding to the small item “direction” is information for specifying the direction relationship with the link at the level crossing. The information stored corresponding to the small item “link travel time” is information for specifying the link travel time. The information stored in association with the item “crossing approach link” is information related to a road link or a two-way link with respect to a link with a crossing. This item “crossing approach link”, like the item “crossing crossing link”, includes a small item “link ID”, a small item “direction”, and a small item “link travel time”. Corresponding information is stored in association with each other. For example, in the example of the top record in FIG. = 1 for the level crossing identified by the link ID = 1001 is a link with the level crossing, and the links identified by the link IDs 1002, 1003, 1004 are the link IDs. = Link of road or two-way link with respect to the link specified by 1001. And the railroad crossing No. The crossing time of a crossing specified by = 1 is the sum of the link travel times of each link specified by link IDs = 1001, 1002, 1003, and 1004 (= 20 + 10 + 20 + 15 = 65 sec).

  The crossing crossing time calculation device 10 performs such crossing crossing time calculation processing on each crossing so that the crossing crossing time of each crossing is stored in the crossing crossing time table 13c of FIG. The process ends. Thus, the crossing passing time of each crossing stored in the crossing passing time table 13c is transmitted to the in-vehicle device 20 of each vehicle 2 via the network 3 as necessary. That is, for example, when the travel route is set by the driver and the predicted travel time is calculated by the driver, the in-vehicle device 20 of each vehicle 2 transmits information specifying the travel route to the level crossing passage time calculation device 10. The control unit 12 of the level crossing passage time calculating device 10 identifies a level crossing existing on the travel route based on the information for identifying the travel route and the map information in the map information DB 13a, and passes the crossing of the identified level crossing. The time is acquired from the crossing passage time table 13 c and transmitted to the in-vehicle device 20. The in-vehicle device 20 calculates the predicted travel time based on the crossing passage time and displays it to the driver.

(effect)
As described above, according to the embodiment, any one of the links located on the opposite side of the traveling direction of the vehicle 2 from the link with the crossing corresponding to the crossing information is a road to the link with the crossing by the determination unit 12c. If it is determined that the link is a link, the link travel time of the link with the level crossing and the link travel time of the road link with respect to the link with the level crossing are acquired from the link travel time table 13b, and the acquisition is performed. Since the calculation unit 12d for calculating the crossing time until passing through the crossing based on the link travel time is provided, not only the link with the crossing but also the link along the road with respect to the link with the crossing is considered. By calculating the level crossing passing time, it is possible to calculate an accurate level crossing passing time, and to provide information that is effective when supporting the travel route of the vehicle 2 Kill. Further, it is possible to calculate a crossing passing time based on a link travel time that can be easily acquired as probe information, and it is not necessary to actually measure the closing period of a crossing that cannot be acquired as probe information. In addition, even when the train schedule is changed, an accurate crossing time can be calculated.

  Further, the calculating unit 12d uses the determination unit 12c to determine whether any of the links located on the opposite side of the traveling direction of the vehicle 2 from the link with the level crossing corresponding to the level crossing information is the link of the two-difference path with respect to the link with the level crossing. When it is determined that the link travel time of the link with the crossing and the link travel time of the link of the two difference road with respect to the link with the crossing are acquired from the link travel time table 13b, the acquired Since the crossing time is calculated based on the travel time of the link, it is possible to calculate the crossing time more accurately by taking into account not only links with crossings but also links with two crossings for links with crossings. The level crossing passing time can be calculated.

  Further, the determination unit 12c determines that a node on the traveling direction side of the vehicle 2 in each link is a predetermined distance from the level crossing as each link located on the opposite side of the traveling direction of the vehicle 2 with respect to the link with the level crossing corresponding to the level crossing information. Because the judgment is performed for the links located within, it is possible to set the appropriate distance according to various situations around the level crossing, and calculate the crossing time accurately according to the situation can do.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above contents, and may vary depending on the implementation environment and details of the configuration of the invention. May be solved, or only some of the effects described above may be achieved. For example, even when the level crossing passage time cannot be calculated more accurately than in the past, the problem of the present invention has been solved when the calculation and provision of the level crossing passage time can be achieved by a technique different from the conventional one.

(About distribution and integration)
Further, each of the electrical components described above is functionally conceptual and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each part is not limited to the one shown in the figure, and all or a part thereof may be functionally or physically distributed / integrated in arbitrary units according to various loads and usage conditions. Can be configured. For example, some or all of the components of the crossing passage time calculation system 1 may be incorporated in the in-vehicle device 20 of the vehicle 2.

(About level crossing passage time calculation processing)
In the above embodiment, in the crossing passage time calculation process of FIG. 3, the calculation unit 12d acquires the link travel time of each link from the link travel time table 13b, and uses the acquired link travel time to pass the crossing. Although it has been described that the initial value of time is set or the level crossing passing time is updated, the present invention is not limited to this. For example, in order to improve the accuracy of calculating the crossing passage time, the calculation unit 12d adds a coefficient corresponding to the opening / closing time of the crossing or the traffic volume of the crossing to the link travel time of each link acquired from the link travel time table 13b. You may calculate the crossing level by multiplying. In this case, for example, the data recording unit 13 may include a coefficient table that stores coefficient information regarding coefficients corresponding to the opening / closing time of the crossing or the traffic volume of the crossing.

  In the above-described embodiment, the level crossing passage time calculation process in FIG. 3 has been described as specifying a link within a predetermined distance from the level crossing. However, this predetermined distance is not limited to one value. Different values may be dynamically selected according to the opening / closing time, level crossing traffic volume, road type of the link, etc. (Furthermore, for values related to level crossing opening / closing time or level crossing traffic, May be different values). In this case, for example, the data recording unit 13 may include a distance information table that stores distance information regarding a predetermined distance according to the opening / closing time of the crossing, the traffic volume of the crossing, or the road type of the link.

  Further, in the above-described embodiment, after the crossing within the predetermined distance from the crossing is specified in the crossing crossing time calculation process in FIG. 3, whether or not the specified links are sequentially targeted is a road link. However, it is possible to change the order of the identification and determination. For example, the links are selected in the order of distance from the link with the level crossing, in the order of distance from the link, and whether the link is within a predetermined distance from the level crossing and whether the link is a road link or a two-way link. Only when the conditions are determined and each condition is satisfied, the link passing time of the link may be included in the crossing passing time of the crossing.

DESCRIPTION OF SYMBOLS 1 Railroad crossing time calculation system 2 Vehicle 3 Network 10 Railroad crossing time calculation device 11 Communication part 12 Control part 12a Crossing information acquisition part 12b Link information acquisition part 12c Determination part 12d Calculation part 13 Data recording part 13a Map information DB
13b Link travel time table 13c Railroad crossing time table 20 In-vehicle device

Claims (5)

Map information storage means for storing map information including link information of each link connecting a plurality of nodes indicating the position of the road to each other, and crossing information regarding the crossing;
Link travel time storage means for storing link travel time, which is the time required for the vehicle to travel on each link;
Crossing information acquisition means for acquiring the crossing information from the map information storage means;
One of the links located on the opposite side of the traveling direction of the vehicle from the link with the crossing corresponding to the crossing information acquired by the crossing information acquisition means is a road link to the link with the crossing. And
A link that is in direct contact with the link at the level crossing and that is a link along the traveling direction of the link at the level crossing, or
It is a link that is in direct contact with the link with the level crossing only through the link along the direction of travel of the link with the level crossing, and that is a link along the direction of travel of the link with the level crossing. Link,
Determination means for determining whether or not is based on the link information acquired from the map information storage means;
When it is determined by the determination means that any one of the links located on the opposite side of the traveling direction of the vehicle with respect to the crossing link corresponding to the crossing information is a road link to the crossing link. In addition, the link travel time of the link with the crossing and the link travel time of the road link with respect to the link with the crossing are acquired from the link travel time storage means, and based on the acquired link travel time, A calculating means for calculating a crossing passing time until it passes through the crossing;
A crossing passing time calculation system comprising: The determination means includes
A link with a crossing when it is determined that one of the links located on the opposite side of the traveling direction of the vehicle with respect to the crossing information corresponding to the crossing information is not a link on the road with respect to the link with the crossing Any one of the links located on the opposite side of the vehicle traveling direction is a two-way link with respect to the link with the crossing,
The link is in direct contact with the link with the level crossing, and the part of the link on the traveling direction side of the vehicle is along the direction of travel of the link with the level crossing, and the other part is the link A two-way link that does not follow the direction of travel of the crossing link, or
The link is in direct contact with the link with the crossing only through the link along the direction of travel of the link with the crossing, and the portion of the link on the traveling direction side of the vehicle has the link with the crossing A two-way link that does not follow the direction of travel of the link with the crossing,
Is determined based on the link information acquired from the map information storage means,
The calculating means includes
The determination means determines that one of the links located on the opposite side of the vehicle traveling direction with respect to the crossing link corresponding to the crossing information is a two-way link with respect to the crossing link. In this case, the link travel time of the link with the crossing and the link travel time of the link of the two-way difference with respect to the link with the crossing are acquired from the link travel time storage means, and based on the acquired link travel time Calculating the crossing passing time,
The crossing passing time calculation system according to claim 1. The determination means includes
As each link located on the opposite side of the traveling direction of the vehicle with respect to the link having the crossing corresponding to the crossing information, a link in which a node on the traveling direction side of the vehicle in each link is located within a predetermined distance from the crossing. Make a decision as a target,
The crossing passage time calculation system according to claim 1 or 2. A crossing in which a crossing information acquisition unit acquires the crossing information from a map information storage unit that stores map information including link information of each link that interconnects a plurality of nodes indicating a road position and crossing information about the crossing An information acquisition step;
One of the links located on the opposite side of the traveling direction of the vehicle with respect to the link with the crossing corresponding to the crossing information acquired in the crossing information acquisition step is a road link to the link with the crossing Because
A link that is in direct contact with the link at the level crossing and that is a link along the traveling direction of the link at the level crossing, or
It is a link that is in direct contact with the link with the level crossing only through the link along the direction of travel of the link with the level crossing, and that is a link along the direction of travel of the link with the level crossing. Link,
Whether or not is determined based on the link information acquired from the map information storage means;
In the determining step, in the determination step, any one of the links located on the opposite side of the traveling direction of the vehicle with respect to the crossing link corresponding to the crossing information is a link along the road to the crossing link. If it is determined, the link travel time storage means for storing the link travel time, which is the time required for the vehicle to travel on each link, and the link travel time of the link with the crossing and the road to the link with the crossing A link travel time of the link, a calculation step of calculating a crossing crossing time until passing the crossing based on the acquired link travel time;
A crossing passing time calculation method including Computer
Crossing information acquisition means for acquiring the crossing information from map information storage means for storing map information including link information of each link connecting a plurality of nodes indicating the position of the road to each other and crossing information regarding the crossing;
Any one of the links located on the opposite side of the traveling direction of the vehicle with respect to the crossing information corresponding to the crossing information acquired by the crossing information acquisition means is a road link to the link with the crossing. ,
A link that is in direct contact with the link at the level crossing and that is a link along the traveling direction of the link at the level crossing, or
It is a link that is in direct contact with the link with the level crossing only through the link along the direction of travel of the link with the level crossing, and that is a link along the direction of travel of the link with the level crossing. Link,
Determination means for determining whether or not is based on the link information acquired from the map information storage means;
When it is determined by the determination means that any one of the links located on the opposite side of the traveling direction of the vehicle with respect to the crossing link corresponding to the crossing information is a road link to the crossing link. In addition, the link travel time of the link with the level crossing and the link travel time of the road link with respect to the link with the level crossing store the link travel time which is the time required for the vehicle to travel each link. A calculating means for obtaining from the travel time storage means, and calculating a crossing passing time until passing the crossing based on the acquired link travel time;
Level crossing transit time calculation program to function as.

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