JPS59100912A - Autonomous dispersing system - Google Patents

Abstract

PURPOSE:To improve the reliability in case of processing the whole system by collating and checking each decision result of a central device and a dispersed slave station processing device. CONSTITUTION:A central device 1 and station processing devices 21-24 being slave station processing devices are connected through transmission control devices 30-34 to a transmission line 2 extended like a loop. Terminal equipments 41-44 and 51-54 are connected to the station processing devices 21-24, and input informations 61-64 are transmitted to the central device 1 and managed in a lump. In case when the terminal equipments 51-54 are controlled by sending out commands 71-74 to them basing on said input informations 61- 64, a control data 3 of a result decided by an A-program 8 of the station processing devices 21-24 is transmitted to the central device 1, also the central device 1 decides it by a B-program 9, its result 10 is compared 11 with said control data 3, and only in case when they coincide with each other, it is acknowledged and sent out 12 to the station processing devices 21-24.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to configuration control of a distributed system, and particularly to an autonomous distributed system that improves processing reliability.

[Prior art]

System configuration methods can be broadly classified into centralized systems and distributed systems when classified in terms of functional division in processing devices. A centralized system is a method in which most of the functions are concentrated in a centrally installed processing device (hereinafter referred to as a solid device). This method has been widely used in the past because it has advantages such as condensed hardware. However, in this centralized system, the functions are concentrated in the center, so a failure of a solid device immediately leads to the entire system going down, and it is necessary to multiplex the solid devices to improve system reliability. Even so, the risk is essentially unavoidable, and the larger the system, the more immeasurable the damage will be in the event of a failure.

On the other hand, a distributed system is a method in which functions are distributed among multiple processing devices, and has the advantage that even if a single processing device fails, the functionality of the entire system will deteriorate, but the system will not go down. There is. For example, in a railway system, as shown in FIG.
The input information 121, 122, 123 of 2, 103 is transmitted by the relay device and managed by the solid device 1. In the solid equipment 1, control signals 131, 131,
Send 132.

In the distributed blade type, as shown in FIG. Perform transmission. In normal operating conditions, the station processing devices 21, 22, and 23 take into account change commands sent from the solid equipment 1 or command information for coordination of the entire system, and control the route of trains in the 0 station category. Do this. In the distributed blade type, if a failure occurs in the solid device 1 or the transmission line, the station processing devices 21, 22, and 23 control the route using only the information within the own station classification, and some station processing devices 21 It is understood that in the event of a breakdown, manual route control will be performed only in that section, and the situation will not disrupt the operation of all trains on the route.

In this way, a system that normally works while coordinating with the whole, but can perform its own functions to some extent in the event of an abnormality, is called an autonomous decentralized system, and a system with such a configuration is called an autonomous decentralized system.

In an autonomous decentralized system, the amount of information handled by each processing device is small, so the processing speed is faster than in a centralized system. However, there are parts that should be common in terms of function and hardware configuration for each processing device, solid device, and station processing device, and this has the disadvantage that the system becomes redundant when viewed as a whole.

[Purpose of the invention]

An object of the present invention is to improve the processing reliability of the entire autonomous decentralized system.

[Summary of the invention]

As mentioned earlier, in an autonomous decentralized system, it is necessary for the solid equipment and the station processing equipment to have common functions. Here, by creating methods (for example, programs) for realizing this common function in separate ways for the solid equipment and the station processing equipment, and checking each other's judgment results, the reliability of the processing of the entire system can be improved. You can improve your performance.

[Embodiments of the invention]

An embodiment of the present invention will be explained below with reference to FIG.

FIG. 3 shows a block diagram of the node-ware configuration of the autonomous decentralized system, in which the solid equipment 1 and station processing equipment 21 to 24 each control the transmission on the transmission path 2 stretched in a loop. They are connected via devices 30-34. In addition, the station processing devices 21 to 24 are terminal devices 41 to 44 and 51.
~54 and performs input/output. Here, the input information 61 to 64 taken in from the terminal devices 41 to 44 is always transmitted from the station processing devices 21 to 24 to the solid device 1 via the transmission path 2, and in the solid device 1, each station processing device 21-2
The input information 61 to 64 from 4 is collectively managed. Therefore, when the station processing device 21 sends a command 71 to the terminal device 51 based on the input information 61 taken in from the terminal device 41 to perform control, the control data 3 as a result of the judgment by the station processing device 2.1 is transmitted to the solid device 1 via the transmission line 2 in the same way as the input information 61. In the solid device 1, the fourth
As shown in the figure, the A program 8 used in the judgment by the station processing device 21 and the B program 9 realized by a different method are used to make the judgment based on the input information 61, and the result is 1.
By comparing 0 and control data 3 in the comparison unit 11, if they match, approval is given, and if they do not match, rejection is given as control permission data 12 to the station processing device 21 via transmission path 2. Send. The station processing device 21 normally sends the control signal 7 to the equipment 51 with this control permission data 12.
1, and if the solid device 1, transmission control device 30, 31, and transmission line 2 are abnormal, a control signal 71 is output to the equipment 51 based on the independent judgment result of the station processing device 21.

Figures 5 and 6 show the processing flow on the station processing device side, respectively.
A processing flow on the solid device side is shown as an example. Here, in check block 13 in FIG. 6, it is determined whether the control decision made by the station processing device can be approved based on the global decision made by the solid device.

By the above method, from the station processing devices 21 to 24 to the equipment 51
The control signals 71 to 74 outputted to the stations 54 to 54 are normally double checked by programs implemented in separate systems in the station processing devices 21 to 24 and the solid device 1, and are not processed. This will improve the reliability of the system.

〔Effect of the invention〕

According to the present invention, as described above, since the station processing device and the solid device undergo double checking based on judgment criteria based on different methods, the reliability of the resulting control signal is improved.

In addition, from the perspective of the entire system, the effect of matching the local judgment of the station processing device and the global judgment of the solid device, and
By monitoring the judgment results from the station processing equipment using a solid device, it is expected that abnormalities in the station processing equipment can be detected.

In addition, as shown in block 14 in FIG. 5 and block 15 in FIG. 6, an abnormality in the station processing device is detected in the solid device,
By creating a configuration that can back up the functions of station processing equipment and output control, it is possible to multiplex processing equipment in a centralized system and improve system reliability.
In addition to improving the reliability of the distributed system in which each station processing device is configured as if it were multiplexed by a solid device, there are n station processing devices as shown in FIG. 7(A)K.
There is a total of (n+1) processing devices with one solid device, and 2n station processing devices, solid Since the system can be configured to have the same reliability as one system configured with a total of (2n+1) processing devices, it is possible to provide an inexpensive and highly reliable distributed system.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of a centralized system, Figure 2 is a configuration diagram of a distributed system, Figure 3 is a configuration diagram of an autonomous decentralized system according to an embodiment of the present invention, and Figure 4 is a diagram of control data using two types of programs. Comparison method: FIG. 5 shows the processing flow of the station processing device side, FIG. 6 shows the processing flow of the solid device, and FIG. 7 shows the multiplexed distributed system. DESCRIPTION OF SYMBOLS 1...Solid device, 2...Transmission path, 3...Control data, 12...Control permission data, 8...Program A
, 9... Program B, 10... Judgment result, 11.
...Comparison section, 13...Check on solid equipment side, 14
... Control data output of the solid device judgment result in the station processing device, 15... Backup by the solid device, 21
~24... Station processing device, 30-34... Transmission control device, 41-44... Terminal equipment, 51-54... Terminal equipment, 61-64... Input information, 71-74... ... Control signal, 101-103 ... Track circuit, 111-11
2...Traffic light. Figure / Figure 2 Figure 3 Figure 5 Figure 6 Figure ~ (A) Figure 7 (β)

Claims (1)

[Claims] 1. In a distributed system consisting of a solid device that is the parent of the system and a slave station processing device that performs information transmission with the solid device, the solid device and the slave station processing device determine the results individually. An autonomous decentralized system characterized by matching checks.