JP2778411B2 - Decentralized train operation management system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed train operation management system, and more particularly to a method for transmitting timetable information from a central processing unit to a train control unit.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram showing a configuration of a distributed train operation management system similar to that shown in, for example, Japanese Patent Application Laid-Open No. 59-209961. In FIG. A central processing unit that manages the operation of the train and issues a command based on the information, a transmission line 2 for transmitting information between the central processing unit 1 and a train control device 3 described below, and a train tracking and control system 3 installed at each station. 4 is a relay interlocking device, and 5 is various traffic lights.

Next, the operation will be described with reference to FIG. The timetable of all trains created by the central processing unit 1 is transmitted to the train control device 3 via the transmission line 2,
As shown in FIG. 7, first, a diagram for a certain period from the starting time is transmitted, and is temporarily stored in the train control device 3 of each station. After that, the transmission of the diamond for the next predetermined period is continued at a predetermined cycle (every predetermined time). The train control device 3 of each station creates a signal necessary for train operation such as route control based on the received schedule, outputs the signal to the relay interlocking device 4 according to the train operation, and controls the various traffic lights 5. .
Therefore, it is necessary for the train control device 3 of each station to perform a diamond reception process from the central processing unit 1 at regular time intervals while performing train tracking and train control.

[0004]

Since the conventional distributed train operation management system is configured as described above, the transmission of the schedule is always performed at a fixed period, so that the load of the data transmission processing increases. On the other hand, the train control device has a problem that time is spent on the reception management of the schedule, and precise train tracking and train control processing cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a distributed train operation management system capable of transmitting only a required timetable from a central processing unit to a train control unit. The purpose is to obtain.

[0006]

A distributed train operation management system according to the present invention uses a central processing unit for a predetermined number n of trains of n trains from the first train before the start of train operation. From the train control device to the train control device, from the train information in the train control device the train schedule of the controlled train after the train operation starts, the number of controlled trains from the train control device to the central processing unit And a means for transmitting a timed number of controlled trains from the next train after the transmitted train when transmitting the timed schedule periodically.

[0007] Further, the system is provided with means for transmitting n trains including the changed schedule to the train control device when the schedule is changed in the central processing unit.

Further, the system is provided with means for transmitting n diamonds to the train control device when the central processing unit recovers from the system down.

[0009] Further, there is provided means for transmitting n diamonds to the train control device when an abnormality occurs in the transmission of the diamonds.

[0010]

The train control device according to the present invention deletes the timetables of controlled trains in accordance with the train control, and thereafter, only the number of times the number of deleted trains is transmitted, and the number of timetables held by the train control device exceeds n. Absent.

When the timetable is changed in the central processing unit, if the changed timetable is included in the n timetables held in the train control device, the first control object is controlled.
When the change diagram exists before the first diamond to be controlled, the change diagram transmits n diagrams from the change diagram.

When the central processing unit recovers from the system down, n diamonds are transmitted from the first diamond to be controlled in the train control unit.

Further, when an abnormality occurs in the transmission of a diagram, n diagrams are transmitted from the first control target diagram in the train control device.

[0014]

【Example】

Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. Basically, the configuration of the distributed train operation management system is the same as that shown in FIG. FIG. 1 is a diagram showing a diagram transmission process according to the present embodiment. When the central processing unit determines that the diagram transmission is unnecessary, nothing is transmitted and the diagram reception process is reduced in the station control device. I have. FIG. 2 is a flowchart illustrating a transmission process (including a transmission determination) of the central processing unit of FIG.

Next, the operation will be described with reference to FIGS. First, transmission processing performed by the central processing unit 1 will be described with reference to the flowchart of FIG. First, 1 is set to a pointer indicating a diagram transmission start number (hereinafter, referred to as a start pointer), and the total diagram number N to be transmitted to the train control device 3 is set to a pointer indicating a diagram transmission end number (hereinafter, referred to as an end pointer). (S1). The schedules are assigned serial numbers 1 to N (diamond number), where 1 is the schedule of the first train and N is the schedule of the last train. Before the start of train operation, n (n <N) diamonds are transmitted from the first train to the train control device 3 via the transmission line 2 (s2). This n is, for example, assuming that a diamond for two hours is sent, and if the diamond is operated at intervals of about 5 minutes, it is roughly calculated as 2 × 60/5 = 24. In addition, the transmission method is a handshake method in which the train control device 3 returns a normal / abnormal response to one diamond transmission. Then, n is set to a pointer (hereinafter, referred to as a transmission pointer) indicating the diagram number for which transmission has been completed (s3).

When the train operation starts, the train control device 3
Increases the pointer (hereinafter referred to as the current pointer) indicating the first train to be controlled every time the control of the train is completed. The current pointer is transmitted to the central processing unit 1 via the transmission path 2, and transmitted together with various information such as train position information which is periodically transmitted to the central processing unit 1 as the train control device 3. Is done. The central processing unit 1 can obtain the number of trains controlled by the current pointer. The transmission pointer and the end pointer are compared (s4),
If they match, the process is terminated assuming that transmission of all the diagrams has been completed. If they do not match, Δ represented by the following equation is calculated (s5). Δ = n−transmission pointer + current pointer−1 When Δ = 0, this indicates that there are n uncontrolled train schedules in the train control device 3, and the process is performed without transmitting the schedule. finish. When Δ ≠ 0, this means that the train control causes the uncontrolled train schedule in the train control device to be n
The central processing unit 1 transmits to the train control device 3 a diagram of Δ lines (Δ lines including the (transmission pointer +1) line) from the (transmission pointer +1) line to the train control device 3. (S6). The train control device 3 deletes the timetable of the controlled train and adds the received timetable after the received timetable. After confirming the normal reception response from the train control device 3, the central processing unit 1 updates the value of the transmission pointer to (transmission pointer + Δ) (s7), and ends the processing. The processes of s4 to s7 are repeated at regular intervals in the central processing unit 1 during train operation, and the train control device 3
Will be received. As described above, since the timetables are transmitted from the central processing unit to the train control device by the number of trains that have been controlled, the number of trains held by the train control device at each station does not always exceed n, and the train control device is unnecessary. It is possible to receive all of the schedules without performing the reception processing of.

Next, a diagram transmission process in the case where a diagram disruption has occurred and the diagram is changed from the central processing unit 1 will be described with reference to the flowchart of FIG. When the timetable is changed by the input of the commander (t1), if the train of the changed timetable exists in the original timetable, only the contents of the timetable of the train are changed, and the timetable number is not changed. If the train of the changed timetable does not exist on the original timetable (when adding a new timetable), the changed timetable is inserted into the original timetable in the order of the departure time. In this case, the diamond number is re-entered after the changed diamond is inserted. For example, if a changed diamond is inserted between the diamond of the diamond number 4 and the diamond of the diamond number 5, the diamond of the diamond of the diamond number 4 remains the same, the diamond number of the changed diamond becomes 5, and the diamond following the diamond Are serialized from diamond number 6.

Next, the changed diagram number is compared with the current pointer (t2). When the change diagram number is equal to or smaller than the current pointer (when YES at t2), the current pointer train diagram is changed or a new train is added before the current pointer train. Then, a timetable for n minutes (including the change timetable) is transmitted (t3). The train control device 3 sets the current pointer to the first of the received n diamonds, and thereby holds the n diamonds without disturbing the first train to be controlled (not shown). After confirming the normal reception response from the train control device 3, the central processing unit 1 updates the value of the transmission pointer to (the changed diagram number + n-1) (t4), and ends the processing.

When the changed diagram number is larger than the current pointer (NO at t2), the changed diagram number is compared with the transmission pointer (t5). When the change diagram number is larger than the transmission pointer (NO at t5),
Since there is no change in the schedule that has been transmitted to the train control device 3, the process is terminated without changing the schedule in the central processing unit 1 but transmitting the diamond to the train control device 3. When the changed timetable number is equal to or smaller than the transmission pointer (when YES at t5), one of the timetables held by the train control device 3 has been changed or a new timetable is added between the timetables. Since there are trains, n trains (n trains including the train of the current pointer train) are transmitted from the current pointer train (t6). By setting the current pointer to the first of the received n diamonds, the train control device 3 holds n diamonds without disturbing the first train to be controlled (not shown). . After confirming the normal reception response from the train control device 3, the central processing unit 1 updates the value of the transmission pointer to (current pointer + n-1) (t
7), the process ends.

Next, transmission processing when the central processing unit 1 recovers from a system failure will be described with reference to the flowchart of FIG. After the recovery of the central processing unit 1 (u1), the system waits for transmission of the current pointer from the train control device 3 (u2). When the current pointer is received from the train control device 3 (when u2 is YES), n trains (n trains including the train of the current pointer train) from the current pointer train are transmitted to the train control device 3. (U
3). The train control device 3 sets the current pointer to the first of the received n diamonds, and thereby holds the n diamonds without disturbing the first train to be controlled (not shown). After confirming the normal reception response from the train control device 3, the central processing unit 1 updates the value of the transmission pointer to (current pointer + n-1) (u4), and ends the processing.

Finally, the processing when the timetable transmission processing is not performed normally will be described with reference to the flowchart of FIG. When the timetable is transmitted from the central processing unit 1 (v1), the transmission method is the handshake method, so that it is checked whether there is a response from the train control device 3, and if there is no response, it waits for a certain time t seconds (NO in v4). When). When there is a response from the train control device 3 and the content of the response is “abnormal” (when both v2 and v3 are YES), or when there is no response after waiting t seconds (v
2 is NO and v4 is YES), it is determined that the timetable transmission processing has not been normally performed, and the train control device 3 is notified of n trains from the current pointer train (n trains including the current pointer train timetable). ) Is transmitted again (v5). The train control device 3 sets the current pointer to the first of the received n diamonds, and thereby holds the n diamonds without disturbing the first train to be controlled (not shown). After confirming the normal reception response from the train control device 3, the central processing unit 1 updates the value of the transmission pointer to (current pointer + n-1) (v6), and ends the processing. When the content of the response from the train control device 3 is “normal” (N in v3
If (O), the process is terminated. As described above, when a timetable change is performed, or when a timetable transmission is required due to a system down of the central processing unit or an abnormality in the transmission processing, the timetable transmission is performed only for a necessary time, and the train control device is used. Is reduced.

[0022]

As described above, according to the present invention, the timetable is transmitted from the central processing unit to the train control device by the number of controlled trains. The diamonds held by do not always exceed n
The data transmission load is reduced and the reception processing of the train control device is also reduced, so that there is an effect that precise train tracking and train control can be performed.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a diagram transmission processing method according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a process of the central processing unit of FIG. 1;

FIG. 3 is a flowchart showing processing when a timetable is changed in the central processing unit of FIG. 1;

FIG. 4 is a flowchart showing a process when the central processing unit in FIG. 1 recovers from a system failure.

FIG. 5 is a flowchart showing a process when the diagram transmission of FIG. 1 is abnormal.

FIG. 6 is a block diagram illustrating a configuration of a distributed train operation management system.

FIG. 7 is a diagram showing a diagram transmission process by a conventional distributed train operation management system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central processing unit 2 Transmission line 3 Train control device 4 Relay interlocking device 5 Various traffic signals

Claims (4)

(57) [Claims] 1. A central processing unit that manages train operation and issues a command based on an operation schedule of all trains (hereinafter referred to as a schedule), a train control device installed at each interlocking station to perform train tracking and train control, and In a distributed train operation management system including means for periodically transmitting the timetable from the central processing unit to the train control device, for a predetermined number n, the number n from the first train before the start of the train operation Means for transmitting the timetable of the train from the central processing unit to the train control device, means for deleting the timetable of the controlled train from the timetable information in the train control device according to the train control after the train operation starts, the number of controlled trains Means for transmitting the train from the train control device to the central processing unit, and, when transmitting the schedule periodically, the schedule for the number of controlled trains from the next train after the transmitted train. Distributed train operation management system characterized by comprising: means for transmitting, was not consistently above the n the number of diamonds the train control device is held. 2. When a timetable is changed in the central processing unit, if the changed timetable is included in the timetable held in the train control device, the timetable is controlled first among the timetables. From the power diagram (hereinafter referred to as the first diamond to be controlled), n (diagram including the first diamond to be controlled) diamonds are transmitted, and the changed diamond is the first diamond to be controlled. The distributed train operation management system according to claim 1, wherein, if present, the changed trains transmit n trains (n trains including the changed trains) from the changed trains. 3. When the central processing unit recovers from a system failure, n trains (n trains including the first train to be controlled) from the first train to be controlled in the train control device are again used. The distributed train operation management system according to claim 1, wherein the transmission is performed. 4. When an abnormality occurs in transmission of a diagram, n trains (for n trains including the first train to be controlled) are transmitted again from the train of the first train to be controlled in the train control device. The distributed train operation management system according to claim 1, wherein