Level crossing control system

Abstract

To provide a level crossing control system capable of efficiently changing alarm control start conditions.SOLUTION: One typical level crossing control system of the invention comprises a level crossing on-site device, a train onboard device, and an alarm control device, and the level crossing on-site device reports an alarm on the basis of the control of the alarm control device, the onboard device has a train information transmission unit that transmits train information of the train, the alarm control device has a memory unit that stores the level crossing information of the level crossing on-site device, a train information acquisition unit that acquires the train information, a feedback unit that creates feedback information, and a level crossing control unit that instructs the level crossing on-site device to report the alarm, and the feedback unit can calculate the difference between the reference alarm time in the level crossing information and the actual measured time until the train arrives at the installation location of the level crossing on-site device as feedback information, and can change alarm control start conditions on the basis of the feedback information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a railway crossing control system. [Background technology]

[0002] In a conventional railway crossing control system, a crossing warning is issued based on the train's running position. In this case, the crossing warning is initiated when the train passes a predetermined position. As a condition for initiating warning control for a railroad crossing (hereinafter referred to as the "warning control start condition"), it is stipulated that the position at which the warning is initiated should be set so that the time from when the railroad crossing initiates a warning to when the train arrives at the crossing (hereinafter referred to as the "warning time") is greater than a certain period of time.

[0003] To meet such conditions, for example, Patent Document 1 discloses a technology in which "the railroad crossing warning time calculation device receives signal change information indicating changes in the operating status of each relay from an on-site terminal, and each time the starting point relay falls, indicating a train approaching the starting point, stores the fall time in a memory area in a predetermined order as the warning start time for the new train, and each time a train approaches the terminal point, calculates the time from the warning start time for one train read out from the memory area in the predetermined order to the fall time as the railroad crossing warning time for that train." [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-156262 A Summary of the Invention [Problem to be solved by the invention]

[0005] It is desirable for the warning time at a railroad crossing to be as short as possible while still securing the time necessary to ensure safety within the crossing, and the warning control start conditions may be changed for railroad crossings where there is room to shorten the warning time. However, in the invention described in Patent Document 1, when changing the warning control start conditions, actual measurement data on the warning time for each railroad crossing is required, and based on the results of analysis of the actual measurement data, consideration must be given to whether or not the warning control start conditions for the railroad crossing can be changed. In addition, means for acquiring actual measured data include, for example, a method as shown in Patent Document 1 in which wayside equipment for acquiring actual measured data is installed at the control start position and at the railroad crossing, and the warning time is measured in a state in which it can be calculated, or a method in which the warning time is visually measured by an operator. Regardless of which method is used, changing the conditions for initiating warning control at a railroad crossing poses the problem that it requires the installation of additional trackside facilities and work by personnel.

[0006] Therefore, an object of the present invention is to provide a railroad crossing control system that can efficiently change warning control initiation conditions. [Means for solving the problem]

[0007] In order to solve the above problems, one representative level crossing control system of the present invention is a level crossing control system comprising a level crossing on-site device, an on-board device of a train, and an alarm control device, wherein the level crossing on-site device issues an alarm based on the control of the alarm control device, the on-board device has a train information transmission unit that transmits train information of the train, the alarm control device has a memory unit that stores level crossing information of the level crossing on-site device, a train information acquisition unit that acquires the train information, a feedback unit that creates feedback information, and a level crossing control unit that instructs the level crossing on-site device to issue the alarm, and the feedback unit calculates the difference between a reference alarm time in the level crossing information and the actual time until the train arrives at the installation location of the level crossing on-site device as feedback information, and can change the alarm control start condition stored in the memory unit based on the feedback information. Effect of the Invention

[0008] According to the present invention, it is possible to provide a railroad crossing control system capable of efficiently changing warning control initiation conditions. Problems, configurations and effects other than those described above will become apparent from the following description of the preferred embodiment of the invention. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 shows an example of a railroad crossing control system according to the first embodiment. [Diagram 2] FIG. 2 shows an example of a railroad crossing control system according to the second embodiment. [Diagram 3] FIG. 3 is a flowchart showing a process performed when the ground equipment changes the alarm control start condition of the crossing on-site equipment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiment. In addition, in the description of the drawings, the same parts are denoted by the same reference numerals. When there are multiple components having the same or similar functions, they may be described by using the same reference numerals with different subscripts, or when there is no need to distinguish between these multiple components, the subscripts may be omitted. In addition, although terms such as "first," "second," and "third" may be used in the present disclosure to describe various elements or components, it will be understood that these elements or components should not be limited by these terms. These terms are used only to distinguish one element or component from another element or component. Thus, a first element or component discussed below can also be referred to as a second element or component without departing from the teachings of the inventive concept. In order to facilitate understanding of the invention, the position, size, shape, range, etc. of each component shown in the drawings may not represent the actual position, size, shape, range, etc. Therefore, the present invention is not necessarily limited to the position, size, shape, range, etc. disclosed in the drawings.

[0011] [First embodiment] First, a railroad crossing control system 1 according to a first embodiment will be described with reference to FIG. FIG. 1 shows an example of a railroad crossing control system 1. The railroad crossing control system 1 is a control system that controls warnings for railroad crossings installed along a railway line. The railroad crossing control system 1 mainly includes an alarm control device 11 that controls alarms, a railroad crossing on-site device 12 installed along the track, and an on-board device 13 installed on the train.

[0012] <Alarm control system> The alarm control device 11 controls the railroad crossing site device 12 based on the information transmitted from the train information transmission unit 131. The alarm control device 11 includes a memory unit 111 that stores information about the railroad crossing on-site device 12, a train information acquisition unit 112 that acquires train information transmitted by the train information transmission unit 131, a feedback unit 113 that creates feedback information that receives the train information, and a railroad crossing control unit 115 that instructs the railroad crossing on-site device 12 to start alarm control.

[0013] <<Storage section>> The memory unit 111 is a storage device that stores the railroad crossing information of the railroad crossing on-site device 12. The crossing information includes the installation location of the crossing on-site device 12, the reference warning time, and the warning control start conditions. The reference warning time is the time from when a warning set for each crossing is initiated until the train reaches the crossing, and must be equal to or longer than a certain time. Furthermore, the warning control initiation condition indicates the position at which the crossing on-site device 12 starts a warning, and when a warning is started at that position, the warning is left unattended so as to satisfy at least the reference warning time.

[0014] The memory unit 111 is connected to the railroad crossing control unit 115 and the feedback unit 113. The storage unit 111 transmits the reference warning time and warning control start conditions requested by the feedback unit 113, and rewrites the warning control start conditions returned from the feedback unit 113 to reflect them in the recorded warning control start conditions. In addition, the memory unit 111 transmits warning control start conditions requested by the railroad crossing control unit 115.

[0015] <<Train information acquisition department>> The train information acquisition unit 112 receives the train information continuously transmitted from the train information transmission unit 131 . Here, continuous reception means that in this embodiment, the train information transmitted by the train information transmitting unit 131 is transmitted once every 300 msec to 500 msec, but the train information may be received at other intervals.

[0016] Here, the train information refers to the current position and current speed of the train on which the on-board device 13 is installed. Furthermore, the train information acquisition unit 112 is connected to a feedback unit 113 and a railroad crossing control unit 115, and transmits the acquired train information to each of them.

[0017] <<Feedback section>> The feedback section 113 creates feedback information, and causes the created feedback information to be reflected in the storage section 111 . Specifically, the feedback unit 113 measures the time from when the railroad crossing on-site device 12 starts issuing an alarm until when the railroad crossing on-site device 12 arrives at the installation location of the railroad crossing on-site device 12, and calculates the actual measured time. Next, the feedback unit 113 compares the reference warning time with the actual measurement time, and if the actual measurement time is greater than the reference warning time, calculates the difference between the reference warning time and the actual measurement time. Next, the feedback unit 113 calculates the distance traveled by the train during the time difference based on the difference and the current train speed from the train information. Next, the feedback unit 113 reflects the warning control start condition obtained by subtracting the calculated distance from the current warning control start condition in the storage unit 111 as a new warning control start condition, and updates it.

[0018] <<Crossing control unit>> The crossing control unit 115 is connected to the train information acquisition unit 112 and the memory unit 111, and controls the crossing on-site device 12 based on the warning control start conditions stored in the memory unit 111 to start warning control. Specifically, first, the crossing control unit 115 acquires the warning control start condition of the crossing on-site device 12 from the memory unit 111. Next, the railroad crossing control unit 115 acquires the current position and current speed of the train from the train information acquisition unit 112 . Next, the crossing control unit 115 calculates the position in front of the crossing on-site device 12 at which the warning control is to be started, based on the warning control start condition and the current speed of the train.

[0019] Next, when the current position of the train reaches the calculated previous position, the crossing control unit 115 controls the crossing on-site device 12 to start issuing a warning since the warning control initiation condition is satisfied.

[0020] <Railway crossing equipment> The railroad crossing on-site device 12 is, for example, a railroad crossing warning device and a crossing barrier installed along the railway line, and based on the control of the railroad crossing control unit 115, issues an alarm and blocks entry to the railroad crossing.

[0021] <On-vehicle equipment> The on-board device 13 is a device including a train information transmission unit 131 that transmits train information to the train information acquisition unit 112 .

[0022] <<Train Information Transmission Unit>> The train information transmitting unit 131 continuously transmits train information to the train information acquiring unit 112 . Here, "continuous transmission" means that in this embodiment, the train information transmitted by the train information transmitting unit 131 is transmitted once every 300 msec to 500 msec, but the train information may be received at other intervals.

[0023] <Action and Effects> The railroad crossing control system 1 according to this embodiment has been described above. The railroad crossing control system 1 disclosed herein mainly has an alarm control device 11, a railroad crossing on-site device 12, and an on-board device 13, and a feedback unit 113 included in the alarm control device 11 compares the actual measured time from when the railroad crossing on-site device 12 starts to issue an alarm to when the railroad crossing on-site device 12 is passed with a reference alarm time, and updates the alarm control start conditions stored in the memory unit 111. This makes it possible to change the warning control initiation conditions of the crossing on-site device 12, and shorten the warning time while still ensuring the time necessary to ensure safety within the crossing.

[0024] [Second embodiment] Next, a second embodiment will be described with reference to FIG. FIG. 2 shows an example of a railroad crossing control system 2. The railroad crossing control system 2 of this embodiment differs from the first embodiment in that the on-board equipment and the alarm control device are connected via wireless communication, and the operator can use the display device to check the updates of the alarm control start conditions by the feedback unit.

[0025] The railroad crossing control system 2 is a control system that controls warnings for railroad crossings installed along the railway line. The railroad crossing control system 2 mainly includes an alarm control device 21 that controls alarms, a railroad crossing on-site device 12 installed along the track, and an on-board device 23 installed on the train.

[0026] <Alarm control device> The alarm control device 21 controls the railroad crossing site device 12 based on the information transmitted from the train information transmission unit 131. The alarm control device 21 mainly includes a memory unit 111 that stores information from the railroad crossing on-site device 12, a train information acquisition unit 112 that acquires train information transmitted by the on-board device 23, a feedback unit 213 that creates feedback information, a railroad crossing control unit 115 that instructs the railroad crossing on-site device 12 to start alarm control, a display device 214 that displays information to the commander, and a ground radio unit 216 that wirelessly connects to the on-board device 23.

[0027] <Feedback section> The feedback section 213 creates aggregate data and change data, which will be described later, as feedback information, and causes the created feedback information to be reflected in the storage section 111 . The feedback unit 213 also transmits the aggregated data and the change data to the display device 214 for display to the commander.

[0028] The feedback unit 213 also includes an alarm time counting unit 2131 and a changing unit 2132 .

[0029] <<Warning time count section>> The warning time compilation unit 2131 creates compilation data from the warning time for each train. Specifically, first, the warning time aggregation unit 2131 calculates the time from when the train passes the position of the warning control start condition to when it arrives at the installation location of the railroad crossing site device 12, based on the train position in the train information acquired from the train information acquisition unit 112, and the warning control start condition and the position of the railroad crossing site device 12 acquired from the memory unit 111, and measures the actual warning time of the railroad crossing site device 12. Similarly, the warning time aggregation unit 2131 measures the time it takes for a train different from the train that passed through the above-mentioned railroad crossing site device 12 to pass through the railroad crossing site device 12, measures the actual measured warning time of the railroad crossing site device 12, and repeats the measurement of the warning time until the actual measured warning time reaches a certain amount or more, that is, the warning time has been measured at least once.

[0030] Next, the warning time counting unit 2131 creates count data from the actual measured warning times. In this embodiment, the aggregated data is a collection of the actual measured alarm times, but it is also possible to use an average value calculated from the actual measured alarm times, or to calculate a median value. Furthermore, outliers may be excluded from the actual measured warning times.

[0031] <<Changed part>> The change unit 2132 creates change data from the aggregate data and the reference warning time, and causes the created change data to be reflected in the storage unit 111 . Specifically, first, the change unit 2132 acquires the collected data from the warning time collection unit 2131. Similarly, the change unit 2132 acquires the train information from the train information acquisition unit 112. Next, the change unit 2132 obtains the minimum value of the actual measurement time from the obtained aggregated data. Next, the change unit 2132 acquires the reference warning time of the railroad crossing on-site device 12 and the warning control start condition from the storage unit 111. Next, the change unit 2132 calculates the time at which the warning is to be started, that is, the warning start time of the crossing on-site device 12, based on the warning control start condition and the train speed in the train information. Next, the change unit 2132 compares the minimum value of the actual measured time with the warning start time, and similarly, if the minimum value of the actual measured time is smaller, it compares the minimum value of the actual measured time with the standard warning time of the crossing on-site device 12. When the reference warning time of the railroad crossing on-site device 12 is shorter, the change unit 2132 subtracts the reference warning time from the minimum value of the actual measurement time to calculate the difference.

[0032] Next, the change unit 2132 creates change data including a change distance X of the warning control initiation condition from the difference.

[0033] At this time, the change distance X is calculated by the formula (1). [Number 1] X=V0t+(1 / 2)αt 2 ...(1) X: Change distance V0: Initial speed at the control start position of the railroad crossing on-site device 12 t: Difference between the minimum value of the aggregated data and the reference warning time α: Acceleration at the control start position of the railroad crossing on-site device 12

[0034] Moreover, the change distance X may be calculated using an equation or method other than equation (1). The change unit 2132 reflects the created change data including the changed distance X in the warning control start condition stored in the storage unit 111. That is, the change unit 2132 moves the warning start condition from the warning control start condition stored in the storage unit 111 by a change distance X toward the near side. At this time, the change unit 2132 may set a condition that a confirmation operation by a commander is received before the warning control start condition is reflected.

[0035] <<Display device>> The display device 214 is a display unit capable of displaying the compiled data and changed data for each crossing, and prompts the controller to change the data. In addition, upon receiving a confirmation operation from the commander, the display device 214 transmits a command to the feedback unit 213 to change the warning control start condition in the railroad crossing information stored in the memory unit 111.

[0036] <<Ground Radio Section>> The ground radio unit 216 is a radio station that is connected wirelessly to the on-board radio unit 231 and receives train information. The ground radio unit 216 is connected to the train information acquisition unit 112 and transmits the train information transmitted from the on-board device 23 .

[0037] <On-vehicle equipment> The on-board device 23 is a device that is installed on a train, calculates train information, and transmits it to the alarm control device 21. The on-board equipment 23 includes an on-board radio unit 231 , a position calculation unit 232 , and a speed calculation unit 233 .

[0038] <<Onboard radio section>> The on-board radio unit 231 is a radio station that is connected to the ground radio unit 216 by radio and transmits train information. The on-board radio unit 231 is connected to a position calculation unit 232 and a speed calculation unit 233, and transmits train information calculated by the position calculation unit 232 and the speed calculation unit 233 to the ground radio unit 216 via wireless connection communication.

[0039] <<Position calculation section>> The position calculation unit 232 calculates the current position of the train in which the on-board device 23 is installed from the train information, and transmits it to the on-board radio unit 231. The position calculation unit 232 calculates the position using, for example, GPS or calculation based on the travel time and travel speed from the station where the train last stopped, but may use other methods of calculation.

[0040] <<Speed ​​calculation section>> The speed calculation unit 233 calculates the speed of the train in which the on-board device 23 is installed from the train information, and transmits it to the on-board radio unit 231. The speed calculation unit 233 calculates the train speed using, for example, a speed sensor, but may also calculate the train speed using other methods.

[0041] <Determining the calculation method for proposed changes to operation plans> Next, a process in which the warning control device 21 changes the warning control start condition of the railroad crossing on-site device 12 will be described with reference to FIG. FIG. 3 is a flow chart when the warning control device 21 changes the warning control start condition of the crossing on-site device 12.

[0042] (Step S101) In step S101, the warning time counting unit 2131 measures the actual warning time of the railroad crossing on-site device 12 for each train. Similarly, the warning time counting unit 2131 repeats measuring the actual warning time of the railroad crossing on-site device 12 for each train until the number of measurements reaches a certain number, and accumulates the actual measured times.

[0043] (Step S102) In step S102, the warning time counting unit 2131 transmits the accumulated warning times to the changing unit 2132 as counted data.

[0044] (Step S103) In step S103, after acquiring the aggregated data calculated in S102, the change unit 2132 refers to the reference warning time of the railroad crossing on-site device 12 stored in the memory unit 211, and subtracts the reference warning time from the minimum value of the aggregated data. The change unit 2132 creates change data for the warning control start condition of the target railroad crossing on-site device 12 from the subtracted time, and transmits the change data to the display device 214.

[0045] (Step S104) In step S104, the display device 214 judges whether or not a confirmation operation for the data change has been performed by the commander. If a confirmation operation has been performed, the process proceeds to S105, and if not, the process ends.

[0046] (Step S105) In step S105, the display device 214 reflects the change data created in S103 in the warning control start conditions stored in the storage unit 211.

[0047] <Action and Effects> The railroad crossing control system 2 according to this embodiment has been described above. In the railroad crossing control system 2 of the present disclosure, the feedback unit 213 included in the warning control device 21 mainly has a warning time counting unit 2131 and a change unit 2132, and the warning time counting unit 2131 repeats the process until it reaches a certain number of times or more. That is, the aggregate data for changing the warning control start condition is created from a plurality of actually measured times, and the change unit 2132 can update the warning control start condition in accordance with the aggregate data. This makes it possible to eliminate errors in the actual measurement time when changing the warning control start condition of the railroad crossing on-site device 12.

[0048] The present invention can also take the following forms. (Aspect 1) A railroad crossing control system comprising a railroad crossing on-site device, a train on-board device, and an alarm control device, The railroad crossing on-site device issues an alarm based on the control of the alarm control device, The on-board device has a train information transmission unit that transmits train information of the train, The alarm control device includes: A memory unit that stores the railroad crossing information of the railroad crossing on-site device; A train information acquisition unit that acquires the train information; a feedback unit for generating feedback information; A railroad crossing control unit that instructs the railroad crossing on-site device to issue the alarm, The feedback unit calculates, as feedback information, a difference between a reference warning time in the railroad crossing information and an actual measured time until the train arrives at a location where the railroad crossing on-site device is installed, and can change the warning control start condition stored in the memory unit based on the feedback information. Railroad crossing control system. (Aspect 2) A railroad crossing control system according to aspect 1, The feedback unit includes an alarm time counting unit and a change unit, The warning time counting unit Measure the actual measurement time at least once, and create aggregate data of the warning time from the actual measurement time; The change unit creates change data for the warning control start condition based on the collected data and the reference warning time, and can reflect the warning control start condition in a storage unit. Railroad crossing control system. (Aspect 3) A railroad crossing control system according to aspect 1 or 2, The train information transmitting unit continuously transmits train information, The train information acquisition unit continuously receives the train information. Railroad crossing control system. (Aspect 4) A railroad crossing control system according to any one of aspects 1 to 3, The storage unit holds the installation position of the railroad crossing on-site device, the reference warning time, and the warning control start condition as railroad crossing information. Railroad crossing control system. (Aspect 5) A railroad crossing control system according to any one of aspects 2 to 4, a display unit capable of displaying the tabulated data and the changed data; The commander can confirm the changed data. Railroad crossing control system. (Aspect 6) A railroad crossing control system according to any one of aspects 1 to 5, The railroad crossing control unit includes: Instructing the railway crossing on-site device to start warning control based on the warning control start condition stored in the storage unit. Railroad crossing control system. (Aspect 7) A railroad crossing control system according to any one of aspects 1 to 6, The on-board device includes an on-board radio unit that transmits train information by radio communication, The warning control device includes a ground wireless unit that receives train information by wireless communication, The on-board radio unit and the ground radio unit are connected by wireless communication. Railroad crossing control system. (Aspect 8) In the railroad crossing control system according to any one of aspects 1 to 7, A first step in which the feedback unit calculates a difference between a reference warning time and an actual time until the train passes through the railroad crossing on-site device based on the train information and the railroad crossing information; a second step in which the feedback unit changes the warning control initiation condition based on the difference; A railroad crossing control method comprising: [Explanation of symbols]

[0049] 1, 2 Railroad crossing control system 11, 21 Alarm control device 111 Storage section 112 Train information acquisition department 113 Feedback Section 114 Display device 115 Railroad Crossing Control Unit 12 Railroad crossing equipment 131 Train Information Transmitter 213 Feedback Section 2131 Alarm Time Count Unit 2132 Changes 214 Display device 215 Alarm control section 216 Ground Radio Division On-vehicle device 231 On-vehicle wireless unit 232 Position calculation unit 233 Speed calculation unit

Claims

1. A railroad crossing control system comprising a railroad crossing on-site device, a train on-board device, and an alarm control device, The railroad crossing on-site device issues an alarm based on the control of the alarm control device, The on-board device has a train information transmission unit that transmits train information of the train, The alarm control device includes: A memory unit that stores the railroad crossing information of the railroad crossing on-site device; A train information acquisition unit that acquires the train information; a feedback unit for generating feedback information; A railroad crossing control unit that instructs the railroad crossing on-site device to issue the alarm, The feedback unit calculates, as feedback information, a difference between a reference warning time in the railroad crossing information and an actual measured time until the train arrives at a location where the railroad crossing on-site device is installed, and can change the warning control start condition stored in the memory unit based on the feedback information. Railroad crossing control system.

2. 2. The railroad crossing control system according to claim 1, The feedback unit includes an alarm time counting unit and a change unit, The warning time counting unit Measure the actual measurement time at least once, and create aggregate data of the warning time from the actual measurement time; The change unit creates change data for the warning control start condition based on the collected data and the reference warning time, and can reflect the warning control start condition in a storage unit. Railroad crossing control system.

3. 2. The railroad crossing control system according to claim 1, The train information transmitting unit continuously transmits train information, The train information acquisition unit continuously receives the train information. Railroad crossing control system.

4. 2. The railroad crossing control system according to claim 1, The storage unit holds the installation position of the railroad crossing on-site device, the reference warning time, and the warning control start condition as railroad crossing information. Railroad crossing control system.

5. 3. The railroad crossing control system according to claim 2, a display unit capable of displaying the tabulated data and the changed data; The commander can confirm the changed data. Railroad crossing control system.

6. 2. The railroad crossing control system according to claim 1, The railroad crossing control unit includes: Instructing the railway crossing on-site device to start warning control based on the warning control start condition stored in the storage unit. Railroad crossing control system.

7. 2. The railroad crossing control system according to claim 1, The on-board device includes an on-board radio unit that transmits train information by radio communication, The warning control device includes a ground wireless unit that receives train information by wireless communication, The on-board radio unit and the ground radio unit are connected by wireless communication. Railroad crossing control system.

8. The railroad crossing control system according to claim 1, a first step in which the feedback unit calculates a difference between a reference warning time and an actual time until the train passes through the railroad crossing on-site device, based on the train information and the railroad crossing information; a second step in which the feedback unit changes the warning control initiation condition based on the difference; A railroad crossing control method comprising:

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