RU2265541C2 - Relay-computer interlocking - Google Patents

Abstract

FIELD: railway signaling and communication.

SUBSTANCE: invention is designed to control switches and signals. Three personal computers are furnished with control elements and are connected by double ring communication. Three checking relays are provided designed to check operation of personal computer, capacitor circuits, control relays and input circuits from object state checking relays. Three interfaces are provided additionally, being connected with computers, input circuits of object state checking relays and winding of control relays through contacts of checking relays. First interface is connected with control relays through front contact of third checking relays and capacitor circuit. Second interface is connected with control relays through rear contact of third checking relay, parallel connected front contact of first and second checking relays and capacitor circuit. Common checking relays is made for checking correspondence between attempt of excitation of set of control relays and their actual excitation. Said common checking relay is connected similar to connection of control relays and its front contact is placed in circuit of control objects in series with contacts of control relays. In process of functioning of proposed interlocking system, checking relays select personal computer to which control relays are connected.

EFFECT: improved traffic safety.

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Description

The invention relates to the field of railway automation and can be used to regulate the movement of trains at the station.

A device for controlling and monitoring arrows and signals, comprising three personal computers (PCs), to the inputs of which information is supplied from outdoor station objects (relay monitoring track sections, relay monitoring the position of arrows, relay monitoring the integrity of signal lamps), and the outputs are connected to the inputs safe inter-elementary element, to the output of which are connected controlled objects (switch-control and signal relays) [1].

A disadvantage of the known device is the low reliability of a safe inter-element element associated with the need to use a large number of semiconductor devices.

It is also known a device for controlling and controlling arrows and signals, containing three PCs, the inputs of which supply information from outdoor objects, and the outputs are connected to the inputs of the interface device, the outputs of which are connected to controlled objects through the contacts of the relay for monitoring the reliable operation of the PC [2].

A disadvantage of the known device, selected as a prototype, is a cumbersome scheme for monitoring the reliability of the PC and the low security of signal control devices.

The technical result to which this invention is directed is to increase the safety of train traffic by increasing the reliability of the operation of the devices.

The technical result is achieved by the fact that the relay-computer centralization, which contains three PCs connected by a double ring connection, three control elements (“mice”), three PC operation control relays, inputs from the object state control relay, capacitor circuits and control relays, is additionally equipped three interface devices connected to computers, outputs from the object status monitoring relay (contacts of track, switch-control and fire relays), control relay windings through the contacts of control relays, and, p The first interface device is connected to the control relays via the front contact of the third control relay, and the second interface device is connected to the control relays through the rear contact of the third control relay and the front contacts of the first and third control relays are connected in parallel, a common control relay that checks the correspondence between trying to excite some the choice of control relays and their actual excitation is turned on similarly to a control relay, and its front contact is included in the control circuit objects (arrows and signals) in series with the contacts of the control relays

Figure 1 shows a diagram of a relay-computer centralization device.

The device contains the first 1, second 2 and third 3 personal computers (PCs) interconnected by two ring connections 4 and 5, the mice 6, 7 and 8 are connected to the first, second and third PCs, and interface devices 9, 10 are also connected to them and 11, respectively. The inputs of the first, second and third interface nodes are connected to the contacts of the control relays 12, 13 and 14 (in full accordance with the prototype). Control relays 15, 16, and 17 are included in the outputs of the interface nodes. Relay 15 will be energized if current flows through two windings from 9 and 10 interface devices, relay 16 from 10 and 11 interface devices, relay 17 from 11 and 9 devices pairing. The minus pole of the power source 18 is fed to the windings of all control and monitoring relays. A control relay 20 is connected to the outputs of the first interface node 9 through the front contact of the third control relay 17 and the capacitor circuit 19. The outputs of the second interface node 10 through the rear contact of the third control relay 17 are connected in parallel to the second 16 and the first control relay 15 and the capacitor circuit 19 the same control relay 20. The remaining control relays 21-79 and the common control relay 80 (not shown) are connected similarly to relay 20. The plus pole of the power supply 81 is connected to the control objects.

The device operates as follows.

As in the prototype, the program of each PC contains three parts: the launch, the first and the second. The launching part serves to set the initial data for drawing screen elements. It runs only once at startup. The first and second parts operate in a closed cycle (I, II, I, II, ...) and perform all the functions inherent in electrical centralization of arrows and signals. These two parts of the program differ only in the designation of variables (P1 is the control bit of the first path in the first part of the program, P1_ is the control bit of the first path in the second part of the program, etc.). After each execution of the first part of the program, the signals of a logical unit (ЛЕ) are fed to the capacitor circuits to switch arrows or open a traffic light, and after the second part of the program, the potentials are supplied with logical zero (ЛН) signals. The contacts of the control relays 15, 16 and 17 select the output of one of the pairing devices 9 or 10. The control relays 15, 16 and 17 are activated only if both windings flow around each of them. These requirements satisfy the relay type PLZU [3]. The excitation of relays 15, 16 and 17 occurs when the first and second, second and third, third and first PCs are in operation, respectively. If the first and third PCs are working properly, then relays 20-80 are connected to the first PC, if the first and third PCs are faulty, then these relays are connected to the second PC.

Using the proposed technical solution will significantly reduce the relay consumption by one arrow, reduce installation, construction and design work. All this contributes to increasing the reliability of the station automation devices of the railway automation, and as a result, improving the safety of train traffic.

Sources of information

1. Patent 2173278 of the Russian Federation, IPC B 61 L 27/04. Relay-computer centralization. / Yu.I. Polevoy, V.N. Yakovlev, M.M. Shumakov, V. B. Gumennikov, P. I. Makarov (RF). - Publ. 09/10/01, Bull. No. 25. - 5 p.: Ill. 2.

2. Soroko V.I., Milyukov V.A. Railway automation and telemechanics equipment. M .: Planet, 2000. Book 1, p.272-277.

3. Sapozhnikov V.V., Elkin B.P., Kokurin I.M. Station automation and telemechanics systems. M .: Transport, 1997, 271 p., Fig. 11.25 (prototype).

Claims (1)

Relay-computer centralization, containing three personal computers equipped with control elements and connected by a double ring connection, three control relays designed to control the operation of personal computers, capacitor circuits, control relays and input circuits from the object state monitoring relay, characterized in that it is additionally equipped three interface devices connected to computers, input circuits from the object state monitoring relay and control relay windings through control contacts relay, and the first interface device is connected to the control relay through the front contact of the third control relay and the capacitor circuit, and the second interface device is connected to the control relay through the rear contact of the third control relay, parallel-connected front contacts of the first and second control relay and the capacitor circuit, common control relay, configured to check the correspondence between an attempt to excite a set of control relays and their actual excitation, analogues are included It is known as a control relay, and its front contact is included in the chain of control objects in series with the contacts of the control relays.