JP7519327B2 - Train traffic management simulation system and train traffic simulator - Google Patents

Description

The present invention relates to a train traffic management simulation system and a train traffic simulator.

Patent Document 1 discloses a technology for accelerating the execution speed of a train traffic management simulation device that combines a train traffic management system that tracks and monitors train traffic status and performs automatic route control based on timetable data with a traffic simulation device that simulates train traffic status. Specifically, Cited Document 1 discloses that "the train traffic management simulation device is configured by adding a means for updating the system time at simulation execution time intervals and accelerating the execution speed of the simulation" (see paragraph [0009]).

Patent No. 3412867

In the conventional technology described above, the simulation execution speed is increased by updating the system time at simulation execution time intervals that update 1 second in 1/n seconds.

However, this speed-up is achieved by accelerating the timing of updating the system time, not by improving the system's processing performance. Therefore, if the data sent and received between the interlocking device and the traffic control system is periodic and asynchronous, the system time can only be sped up to a level that provides a margin that ensures that no processing based on the sent and received data is missed.

In addition, simulation cannot handle abnormalities such as processing delays caused by the system's processing performance.

The present invention has been made in consideration of the above, and aims to enable high-speed processing in a train traffic management simulation system when data is transmitted and received at fixed intervals and asynchronously, without providing a margin to prevent processing errors based on transmitted and received data, and also to enable simulation of abnormalities caused by the processing performance of the system.

In order to solve the above-mentioned problems, one aspect of the present invention includes a train operation simulator that receives control information for controlling train operation from a train operation management unit, simulates the operation based on the received control information, and transmits status information of the simulated operation to the train operation management unit at a transmission timing of a predetermined cycle, and the train operation management unit that receives the status information from the train operation simulator, recognizes the state of the operation based on the received status information, determines the control of the train, and transmits the control information based on the determined control to the train operation simulator at the transmission timing of the predetermined cycle, and at least one of the two devices, the train operation simulator and the train operation management unit, when receiving information transmitted from the other device at the transmission timing of the predetermined cycle, transmits a reception response to the information to the other device, and the other device changes the predetermined cycle between a first cycle and a second cycle longer than the first cycle according to the reception timing of the reception response, and synchronizes the change of the predetermined cycle with the one device.

According to the present invention, for example, in a train traffic management simulation system, when data is transmitted and received periodically and asynchronously, it is possible to speed up processing without providing a margin that is sufficient to prevent processing based on the transmitted and received data from being missed, and it is also possible to simulate abnormalities caused by the processing performance of the system.

FIG. 1 is a diagram showing an example of the configuration of a train traffic management simulation system according to a first embodiment. 4 is a flowchart showing a processing example of the train traffic management simulation system according to the first embodiment. FIG. 13 is a diagram showing an example of the configuration of a train traffic management simulation system according to a second embodiment. 10 is a flowchart showing a processing example of a train traffic management simulation system according to a second embodiment. FIG. 13 is a diagram showing an example of the configuration of a train traffic management simulation system according to a third embodiment.

The following describes an embodiment of the present invention with reference to the drawings. The embodiment is an example for explaining the present invention, and appropriate omissions and simplifications have been made for clarity of explanation. The present invention can also be embodied in various other forms or in forms that combine some or all of each form. Unless otherwise specified, each component may be singular or plural.

Components having the same or similar functions are given the same reference numerals or the same numerals with different subscripts, and descriptions are omitted as appropriate. In addition, for the embodiments described later, differences from the embodiments described earlier will be mainly described.

<Embodiment 1>
(Configuration of train traffic management simulation system 1 according to embodiment 1)
1 is a diagram showing an example of the configuration of a train traffic management simulation system 1 according to embodiment 1. The train traffic management simulation system 1 includes a train traffic simulator 10 and a train traffic management unit 30. The train traffic simulator 10 and the train traffic management unit 30 include a processor and a memory that realize each functional unit, and a storage area that realizes each storage unit.

The train operation simulator 10 has a train operation simulation unit 11, a timetable data storage unit 12, a track circuit data storage unit 13, a status information storage unit 15, and a control information reception notification storage unit (hereinafter, the reception notification storage unit) 16.

The train operation management unit 30 has a schedule data storage unit 31, a train tracking unit 32, a route control unit 33, a control information storage unit 34, a status information storage unit 35, and a control information reception notification storage unit (hereinafter, the reception notification storage unit) 36.

The schedule data stored in the schedule data storage unit 12 of the train traffic simulator 10 and the schedule data stored in the schedule data storage unit 31 of the train traffic management unit 30 are the same. In addition, the system time 21 and system time update period 22 of the train traffic simulator 10, which are updated by the time management unit 20, are synchronized with the system time 41 and system time update period 42 of the train traffic management unit 30, which are updated by the time management unit 40. In other words, one of the train traffic simulator 10 and the train traffic management unit 30 changes its period and synchronizes the period change with the other.

The train operation simulation unit 11 receives control information from the train operation management unit 30 and stores it in the control information storage unit 14. The train operation simulation unit 11 performs simulated train operation based on the schedule data stored in the schedule data storage unit 12, the track circuit data stored in the track circuit data storage unit 13, and the control information stored in the control information storage unit 14 according to the system time 21 updated by the time management unit 20 at each system time update period 22, and stores the resulting status information in the status information storage unit 15 and transmits it to the train operation management unit 30.

The train operation control unit 30 stores the status information received from the train operation simulator 10 in the status information storage unit 35. The train tracking unit 32 imports various status information from the status information stored in the status information storage unit 35, tracks the train, and displays the information on the human-machine interface device 37.

The route control unit 33 determines the train's route from the schedule data stored in the schedule data storage unit 31 and the train tracking information created by the train tracking unit 32 according to the system time 41 updated by the time management unit 40 at each system time update period 42, creates control information for output, stores it in the control information storage unit 34, and transmits it to the train operation simulator 10.

Here, when speeding up the simulation execution speed, the system time update period 22 of the train traffic simulator 10 and the system time update period 42 of the train traffic management unit 30 are shortened to 1/n (n is a predetermined integer) to set a high-speed period in which the normal period of 1 second is updated at 1/n seconds. Note that the high-speed period is not limited to double the speed of 1/n seconds, and it is sufficient if the normal period of 1 second is updated at a period shorter than 1 second.

However, shortening the system time update period 22, 42 only shortens the period for sending and receiving data between the train operation simulator 10 and the train operation control unit 30, and does not speed up the processing performance of the train operation simulation unit 11, train tracking unit 32, and route control unit 33.

For this reason, because the control information and the status information are asynchronous, the system time update period 22, 42 can only be accelerated to a period that provides a margin that ensures that no processing based on the transmitted and received data is missed between the train operation simulation unit 11, the train tracking unit 32, and the route control unit 33.

In contrast, in this embodiment, when the train operation simulator 10 stores the control information received from the train operation management unit 30 in the control information storage unit 14, it stores a control information reception notification indicating that the control information has been received in the reception notification storage unit 16, and transmits the control information reception notification stored in the reception notification storage unit 16 to the train operation management unit 30.

When the train operation management unit 30 receives a control information reception notification from the train operation simulator 10, it stores the control information reception notification in the reception notification storage unit 36. If the train operation management unit 30 has received a control information reception notification for the previous control information at the transmission timing for transmitting the next control information to the train operation simulator 10, the train operation management unit 30 transmits the next control information. On the other hand, even if it is the transmission timing for transmitting the next control information, if the train operation management unit 30 has not received a control information reception notification for the previous control information, it will not transmit the next control information. In other words, the train operation management unit 30 waits to receive a control information reception notification for the previous control information, and transmits the next control information when it receives a control information reception notification for the previous control information.

This allows the system time update period 22, 42 to be accelerated without providing a margin to prevent processing errors based on transmitted and received data between the train operation simulator 11, train tracking unit 32, and route control unit 33.

In addition, if the train operation management unit 30 has not received a control information reception notification for the previous control information, it uses a normal cycle for the simulation execution time increment, updating every second by 1 second, rather than updating every 1/n second, and transmits the next control information to the train operation simulator 10 when the normal cycle transmission timing arrives.

This is for the following reason. In other words, simply shortening the system time update period 22, 42 and shortening the period for transmitting and receiving data does not speed up the processing performance of the train operation simulator 11, train tracking unit 32, and route control unit 33. Therefore, in order to simulate the processing delay of the train operation simulator 11, train tracking unit 32, and route control unit 33, it is necessary to transmit and receive data at a normal period that is not accelerated.

This makes it possible to simulate anomalies such as processing delays caused by system processing performance when shortening the system time update period and speeding up the process without changing the system's processing performance.

(Processing of train traffic management simulation system 1 according to embodiment 1)
FIG. 2 is a flowchart showing an example of processing of the train traffic management simulation system 1 according to the first embodiment.

First, in step S31, the train operation management unit 30 determines whether it is time to transmit control information regardless of whether it is a normal cycle or a high-speed cycle. If it is time to transmit control information (step S31 YES), the train operation management unit 30 proceeds to step S32, and if it is not time to transmit control information (step S31 NO), it repeats step S31.

In step S32, the train operation management unit 30 determines whether or not the previous control information reception notification has been received from the train operation simulator 10. If the previous control information reception notification has been received (step S32 YES), the train operation management unit 30 proceeds to step S33, and if the previous control information reception notification has not been received (step S32 NO), the train operation management unit 30 proceeds to step S36.

In step S33, the train operation control unit 30 sets the period to a high-speed period in which 1 second is updated at 1/n seconds. If the high-speed period is already set at step S33, the high-speed period is maintained.

Next, in step S34, the train traffic control unit 30 transmits control information to the train traffic simulator 10. Next, in step S35, the train traffic control unit 30 determines whether or not the simulation has ended. If the simulation has ended (step S35 YES), the train traffic control unit 30 ends the processing of the train traffic control unit 30 in the processing of the train traffic control simulation system 1, and if the simulation has not ended (step S35 NO), the process returns to step S31.

On the other hand, in step S36, the train traffic control unit 30 determines whether it is a normal cycle transmission timing (whether the timing is a transmission timing in a normal cycle). If it is a normal cycle transmission timing (step S36 YES), the train traffic control unit 30 proceeds to step S33, and if it is not a normal cycle transmission timing (step S36 NO), the train traffic control unit 30 proceeds to step S37. In step S37, the train traffic control unit 30 returns the system time update cycle from the high-speed cycle to the normal cycle, and returns to step S31. If it is already a normal cycle at the time of step S37, the normal cycle is maintained.

On the other hand, in step S11, the train operation simulator 10 determines whether or not the previous control information transmitted from the train operation management unit 30 in step S34 has been received. If the previous control information has been received (step S11 YES), the train operation simulator 10 proceeds to step S12, and if the previous control information has not been received (step S11 NO), it repeats step S11.

In step S12, the train operation simulator 10 transmits a control information reception notification for the control information received in step S11 to the train operation management unit 30. The control information reception notification transmitted to the train operation management unit 30 in step S12 is received and confirmed by the train operation management unit 30 in step S32.

<Embodiment 2>
In the first embodiment, when the train operation simulator 10 stores the control information received from the train operation management unit 30 in the control information storage unit 14, it transmits a control information reception notification indicating that the control information has been received to the train operation management unit 30. Here, since the control information and the status information are asynchronous, the same effect as in the first embodiment can be obtained even if the status information is used instead of the control information reception notification as information indicating that the control information has been received. This will be described below as a second embodiment. The second embodiment will be described mainly with a focus on the differences from the first embodiment.

(Configuration of train traffic management simulation system 1B according to embodiment 2)
3 is a diagram showing an example of the configuration of a train traffic management simulation system 1B according to embodiment 2. The train traffic management simulation system 1B includes a train traffic simulator 10B and a train traffic control unit 30B.

Compared to the train operation simulator 10 of embodiment 1, the train operation simulator 10B omits the function of sending a control information reception notification.Compared to the train operation management unit 30 of embodiment 1, the train operation management unit 30B omits the function of receiving a control information reception notification.

The train operation management unit 30B transmits the next control information only if it has received status information for the previous control information at the transmission timing for transmitting the next control information. However, if the train operation management unit 30B has not received status information for the previous control information even when it is time to transmit the next control information, it will not transmit the next control information and will wait for status information for the previous control information. Then, when it receives status information for the previous control information, the train operation management unit 30B transmits the next control information.

In addition, when the train operation management unit 30B has not received status information for the previous control information, it uses a normal cycle of simulation execution time increments of 1 second to 1 second, rather than updating every 1/n second, and transmits the next control information to the train operation simulator 10B when the normal cycle transmission timing arrives.

(Processing of train traffic management simulation system 1B according to embodiment 2)
FIG. 4 is a flowchart showing an example of processing in the train traffic management simulation system 1B according to the second embodiment.

In step S32B, the train operation management unit 30B determines whether or not status information for the previous transmission of control information has been received at the transmission timing for the next control information. If status information for the previous transmission of control information has been received (step S32B YES), the train operation management unit 30B proceeds to step S33, and if status information has not been received (step S32B NO), the train operation management unit 30B proceeds to step S36.

On the other hand, in step S12B, the train operation simulator 10B transmits status information for the control information received in step S11 to the train operation management unit 30B. The status information transmitted to the train operation management unit 30B in step S12B is received and confirmed by the train operation management unit 30B in step S32B.

According to the second embodiment, the same effect can be obtained with a simpler configuration and processing compared to the first embodiment.

<Embodiment 3>
In the first embodiment, the train operation management unit 30 is configured to transmit the next control information to the train operation simulator 10 when it receives a control information reception notification from the train operation simulator 10 indicating that the previously transmitted control information has been received.

However, since the control information and the status information are asynchronous, the train operation simulator 10 can also be configured to transmit the next status information to the train operation control unit 30 when it receives a status information reception notification from the train operation control unit 30 indicating that the previously transmitted status information has been received by the train operation control unit 30. This configuration is described below as embodiment 3. In embodiment 3, the differences from embodiment 1 will be mainly described.

The configuration and processing of the third embodiment are obtained by mutually replacing the "train operation simulator," "control information," and "control information reception notification" with the "train operation control unit," "status information," and "status information reception notification" in the description of the first embodiment. The configuration of the train operation management simulation system 1C of the third embodiment will be described below, and a description of the processing will be omitted.

<Embodiment 3>
(Configuration of train traffic management simulation system 1C according to embodiment 3)
5 is a diagram showing an example of the configuration of a train traffic control simulation system 1C according to embodiment 3. The train traffic control simulation system 1C includes a train traffic simulator 10C and a train traffic control unit 30C.

When the train operation management unit 30C stores the status information received from the train operation simulator 10C in the status information storage unit 35, it stores a status information reception notification indicating that the status information has been received in the reception notification storage unit 36C, and transmits the control information reception notification stored in the reception notification storage unit 36C to the train operation simulator 10C.

When the train operation simulator 10C receives a control information reception notification from the train operation management unit 30C, it stores the control information reception notification in the reception notification storage unit 16C. If the train operation simulator 10C has received a status information reception notification for the previous transmission of status information at the transmission timing for transmitting the next status information to the train operation management unit 30C, the train operation simulator 10C transmits the next status information. On the other hand, even if it is the transmission timing for transmitting the next status information, if the train operation simulator 10C has not received a status information reception notification for the previous status information, it will not transmit the next status information. In other words, the train operation simulator 10C waits to receive a status information reception notification for the previous status information, and transmits the next status information when it receives a status information reception notification for the previous status information.

In addition, if the train operation simulator 10C has not received a status information reception notification for the previous status information, it uses a normal cycle for the simulation execution time increment of 1 second, updating every 1 second instead of updating every 1/n second, and transmits the next status information to the train operation management unit 30 when the normal cycle transmission timing arrives.

By configuring the train operation simulator 10C in this manner, the same effects as in embodiment 1 can be obtained.

<Embodiment 4>
In the third embodiment, a status information reception notification is used as information indicating that the status information has been received. However, this is not limiting, and since the control information and the status information are asynchronous, the same effect as in the second embodiment can be obtained even if the control information is used instead of the status information reception notification, as in the second embodiment.

The configuration and processing of the fourth embodiment are obtained by mutually replacing the "train operation simulator" and "control information" with the "train operation control unit" and "status information" in the description of the second embodiment. Therefore, a description of the configuration and processing of the train operation management simulation system of the fourth embodiment will be omitted.

<Other embodiments>
Either of the first and second embodiments and either of the third and fourth embodiments may be appropriately combined. That is, the next control information is not transmitted until the train traffic management device receives a control information reception notification or status information for the previous control information from the train traffic simulator. Also, the next status information is not transmitted until the train traffic simulator receives a status information reception notification or control information for the previous status information from the train traffic management device. In this way, in addition to the first embodiment, redundancy in the control of the transmission timing of the control information and status information can be provided by both the train traffic management device and the train traffic simulator.

According to the above-described embodiment, in a train traffic control system that tracks and monitors train operation status and performs automatic route control using timetable data, the sending of notification data indicating that data has been received is added to the data receiving side's processing, and the data sending side confirms receipt of the notification data before sending the next data. As a result, even though there is no change in the system's processing performance, it is possible to speed up the system time by updating the system time faster, without leaving a margin that would prevent processing from being missed.

In addition, if notification data cannot be received before the next data is sent after sending data, the next data is sent at a simulation execution time interval of 1 second, rather than 1/n updates per second. This makes it possible to simulate anomalies caused by system processing performance when speeding up system time updates, even though there is no change in the system processing performance.

The present invention is not limited to the above-described embodiments, and includes various modified examples. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those having all of the configurations described. Furthermore, as long as there is no contradiction, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, replace, integrate, or distribute part of the configuration of each embodiment. Furthermore, the configurations and processes shown in the embodiments can be appropriately distributed, integrated, or replaced based on processing efficiency or implementation efficiency.

1, 1B, 1C: Train operation management simulation system, 10, 10B, 10C: Train operation simulator, 30, 30B, 30C: Train operation management section

Claims (14)

a train operation simulator that receives control information for controlling train operation from a train operation management unit, simulates the operation based on the received control information, and transmits status information of the simulated operation to the train operation management unit at a predetermined cycle;
the train operation management unit receives the status information from the train operation simulator, recognizes the state of the operation based on the received status information, determines control of the train, and transmits the control information based on the determined control to the train operation simulator at the transmission timing of the predetermined period,
At least one of the two devices, the train traffic simulator and the train traffic control unit,
When receiving information transmitted from the other device at the transmission timing of the predetermined period, a reception response to the information is transmitted to the other device;
The other device is
a train operation management simulation system that changes the predetermined period between a first period and a second period longer than the first period according to a reception timing of the reception response, and synchronizes the change of the predetermined period with the one of the devices. 2. A train traffic management simulation system according to claim 1,
The other device is
a train operation management simulation system which transmits the information to one of the devices at the transmission timing of the first period, does not transmit the information until a reception response to the information is received from the one of the devices, and transmits the information to the one of the devices after receiving the reception response. 3. A train traffic management simulation system according to claim 2,
The other device is
a transmission timing of the first period to the one of the devices, and if no reception response to the information is received after the information is transmitted to the one of the devices at the transmission timing of the first period, the predetermined period is set to the second period. 4. A train traffic management simulation system according to claim 3,
The other device is
a train operation management simulation system characterized in that after transmitting the information to one of the devices at the transmission timing of the first period, when the transmission timing of the second period arrives, the information is transmitted to the one of the devices at the transmission timing of the second period even if a reception response to the information has not been received. 5. A train traffic management simulation system according to claim 4,
The other device is
a train operation management simulation system, characterized in that after transmitting the information to one of the devices at the transmission timing of the first period, when transmitting the information to the one of the devices at the transmission timing of the second period, the predetermined period is set to the first period. A train traffic management simulation system according to any one of claims 2 to 5,
the one device is the train operation simulator,
the other device is the train traffic control unit,
the information is the control information,
The train operation management simulation system, wherein the reception response is a reception notification for the control information. A train traffic management simulation system according to any one of claims 2 to 5,
the one device is the train operation simulator,
the other device is the train traffic control unit,
the information is the control information,
The train operation management simulation system according to claim 1, wherein the reception response is the status information in response to the control information. A train traffic management simulation system according to any one of claims 2 to 5,
The one device is the train traffic control unit,
the other device is the train operation simulator,
the information is the status information,
The train operation management simulation system according to claim 1, wherein the reception response is a reception notification for the status information. A train traffic management simulation system according to any one of claims 2 to 5,
The one device is the train traffic control unit,
the other device is the train operation simulator,
the information is the status information,
The train operation management simulation system according to claim 1, wherein the received response is the control information for the status information. A train operation simulator that receives control information for controlling train operation from a train operation management unit, simulates the operation based on the received control information, and transmits status information of the simulated operation to the train operation management unit at a predetermined cycle,
a train operation simulator that receives status information from the train operation simulator, recognizes the state of operation based on the received status information, determines control of the train, and transmits the control information based on the determined control to the train operation simulator at the transmission timing of the predetermined period, and when it receives a reception response to the status information transmitted by the train operation control unit, changes the predetermined period between a first period and a second period longer than the first period in accordance with the reception timing of the reception response, and synchronizes the change of the predetermined period with the train operation control unit. The train operation simulator according to claim 10,
a train operation simulator which transmits the status information to the train operation control unit at the transmission timing of the first period, does not transmit the status information until a reception response to the status information is received from the train operation control unit, and transmits the status information to the train operation control unit after receiving the reception response. The train operation simulator according to claim 11,
a train operation simulator that sets the predetermined period to the second period if no response to the status information is received after the status information is transmitted to the train operation control unit at the transmission timing of the first period. The train operation simulator according to claim 12,
a train operation simulator, characterized in that after transmitting the status information to the train operation control unit at the transmission timing of the first period, when the transmission timing of the second period arrives, the train operation simulator transmits the status information to the train operation control unit at the transmission timing of the second period even if a reception response to the status information has not been received. The train operation simulator according to claim 13,
a train operation simulator, characterized in that after transmitting the status information to the train operation control unit at the transmission timing of the first period, when transmitting the status information to the train operation control unit at the transmission timing of the second period, the predetermined period is set to the first period.

Images