JPS5948260A - Interlocking controller for signal switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an interlocking control device for signal switches, more specifically, a control device for interlocking signals and switches that form train routes. The invention relates to a device that controls the

[Judong Technology]

An example of a conventional train route control system based on a centralized management system (Reference [Comtrak 2nd Stage (Shinkansen Operation Management System) Manual], Japanese National Railways, Comtrak Project Team, March 1975) shows that each station Information on traffic lights is centrally managed. Therefore, there is a drawback that the effect of preventing the spread of failures due to the physical dispersion of equipment is weakened. Specifically, in central management, since information is adjacent to each other on computer files, failures may be transmitted within the files, and equipment at stations far away may become uncontrollable. There is.

[Purpose of the invention]

Therefore, an object of the present invention is to prevent the spread of failures in a state where the equipment of traffic light switches to be controlled is physically dispersed and to prevent the spread of failures through centralized control, and to achieve highly reliable control. An object of the present invention is to provide an interlocking control device for a traffic light switch.

[Summary of the invention]

In order to achieve the above object, the present invention makes use of the special characteristics of the arrangement of traffic lights, switches, and track circuits.
An element arithmetic processing device (element processor) such as a microcomputer is prepared for each unit facility configured in the orbit, and information regarding the unit equipment is stored in a file of the corresponding element processor, and a communication connection is established between each element processor. It is constructed by providing the same connection relationship as the actual track circuit connection.

According to the present invention, since the entire function is divided and processed so that information stored in a certain element processor cannot be directly referred to by another element processor, the above-mentioned spillover of a failure on a file is prevented. This improves the reliability of traffic light switch control. In particular, interlocking control systems for traffic lights have the peculiarity that the unit equipment is connected continuously along the track, and the coverage area of each unit equipment is physically clearly separated.

In general, in a distributed management system, targets are logically divided for management reasons, regardless of the form of distribution of the managed targets.
At this time, it is difficult to decentralize management by considering only the impact on reliability, but in the present invention, due to the above-mentioned special characteristics of the traffic light switch, the scope of management of reliability is limited to the physical Since this is taken into consideration based on the layout of unit equipment, element processors and programs can be distributed in accordance with the layout of unit equipment, and highly reliable control equipment can be realized.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to Examples.

FIG. 1 is a track diagram of a station in which the present invention is implemented, showing the configuration of signals, switches, and track circuits. Here, 5l-89 is a traffic light, the arrow is the direction at the traffic light, K+''-K+3 is the track circuit, 1 to 8 are the point equipment, and the diagonal line at the branch point is the location of the point equipment ( standard position).

FIG. 2 shows the arrangement of element processors and the state of communication connections between the processors in an embodiment of the device according to the present invention, in which hexagonal P1 to PI3 indicate element processors, and one or more element processors are connected to each other. It is possible to disconnect and disconnect from multiple users using software. In the figure, processors P1 to PI3 are each track circuit (unit equipment) K in Figure 1.
1'' K t s respectively. Note that the dotted hexagons are spare processors.

Figure 3 is a linked chart. This is a logic diagram of interlocking control of traffic lights and switches, and each column can be read as follows.

S: Signal name L = Name and direction of the switch that is interlocked and locked when controlling the corresponding signal 'J゛: Open state (when the circuit is short-circuited) that is the condition for controlling the corresponding signal. (No) Track circuit name U: Open state track circuit name for restoring (unlocking) the lock. Note that in this embodiment, only the lock control will be handled and the unlocking control will be excluded. This is because in reality, the lock is often unlocked automatically (software management is ineffective unless it is a formal initialization).

FIG. 4 is a schematic flow diagram of the processing of each second processor.

Next, the operation will be explained according to the contents of each of the above figures. 1st
When there is a train T on the track circuit in the diagram, the processor P+ in FIG. , the route plan for that train name is obtained from the internal table of Pl, the row of track circuits to the destination is indexed from the fixed table, and the row of this track circuit (in the example of Fig. 1, K 2 , K3.K4) is output to the @contact processor P2 as a control request message. Adjacent processor I'+ld: From the track circuit row, learns the state (open/closed) of the track circuit in its own management range from process information 3, and if it is open, one of the - track circuit conditions is established. (omitted in the example of FIG. 3), the control request message, which is a line of track circuits, is output to the adjacent processor P3 in the traveling direction. If the same process is repeated and the condition at the end of the line of track circuits (destination track circuit) is satisfied, the condition for controlling the traffic signal S1 (to set it to evening) is satisfied. Here, the previous control request message is retrieved from the destination track circuit in the opposite direction to the direction of travel (reverse the order in which it came), and each processor reserves the use of the track circuit within its own management range. Then, lock the switch in the specified direction according to the logic in Figure 3. In the example being described, the traffic light Sl is controlled by the processor P2.

If the condition is not met on the way to the destination track circuit, the processor 1 corresponding to the track circuit writes a control request message indicating that the condition is not met (NG) and sends it back to the request generating processor. If it is impossible to reserve the track circuit or lock the switch on the return trip, send the control request message NG as above.

FIG. 2 shows the processors and communication connections required according to the equipment layout of this embodiment cut out from a general-purpose processor board connected in a hexagonal grid.

Therefore, the dotted hexagon in FIG. 2 is treated as a spare processor. Communication connections that are not yet needed have been disconnected for operational purposes. In contrast, in FIG. 5, each processor is configured specifically for the equipment layout of this embodiment. code 4
5 represents a processor, and 5 represents a communication connection path. Furthermore, although it is assumed that there is only one element processor in each of FIGS. 2 and 5, in general, if multiplexing is required to improve reliability, A single-layer In system processor may be used as an element processor.

〔Effect of the invention〕

As explained above with reference to the embodiments, the present invention provides a traffic light,
In response to the physical dispersion of equipment to be controlled, such as point machines, element processors are divided into units, and in response to unit track circuits,
Since a communication connection path is provided between each of the element processors, the scope of a fault in the software of the processor is limited within the physical structure of the controlled object. Furthermore, (1) expansion and modification of new equipment can be handled by connecting processors and changing connection paths.

(2) A software countermeasure can be considered by simply replacing a failure in the new equipment with a failure in only the relevant processor.

(3) Since it is possible to control multiple routes simultaneously, the processing speed is high.

(4) Due to the structure of the line, the number of branches is limited to two, so the number of communication connections for the processor can be up to three (7) 1
171 is limited between adjacent processors and does not add complexity.

(5) By displaying the operating status of the processor as it is, it is possible to replace it with the operating status display.

There are other effects.

[Brief explanation of the drawing]

Fig. 1 is an equipment layout diagram of a station where the present invention is implemented, Fig. 2 is a connection diagram of a lattice array complex processor, Fig. 3 is an explanatory diagram of interlocking control logic, and Fig. 4 is an illustration of each element processor. FIG. 5 is a flowchart diagram illustrating the outline of the processing, and FIG. 5 is a diagram illustrating the connection of the composite processors. 1... Element processor, 2... Communication between element processors, communication connection path, 3... Process information, 4... General element process = 339 Figure j Figure 3 Figure 4

Claims (1)

[Claims] 1. Corresponding to the physical positional relationship of traffic lights, point devices, and track circuits, element processing units are assigned to each of them, and communication connection lines between the above-mentioned element processing units are connected to the connection relationship of the track circuits. An interlocking control device for traffic light switches, characterized in that they are provided and configured in the same manner.