Production

The Structure of microprocessor interlocking system, which includes software and hardware, is built by multilevel pattern and includes:

• Basic and reserve automatic working place of assistant station-master for inputting of control commands and visualization of train situation;
• Automatic working place of electromechanics for providing a possibility of remote monitoring of mircroprocessor interlocking system object state;
• Programmable logic controller with programmable logic of central dependences for carrying out route movements at a station;
• Equipment of monitoring, whether the track is free or occupied, the schemes of switches and traffic lights commutation, schemes of coordination with other devices (semi-automatic interlocking system, crossing signaling, etc).

The System of microprocessor interlocking is built with the implementation of secured architecture (duplicated system) and secured interface with executive objects (secured coupling devices with objects.

All central dependences of interlocking’s logic are fulfilled with a help of two programmable logic controllers, which executes the program concurrently. Programmable logic controllers are equipped with means of inner diagnostics, which allows to detect malfunctioning of system elements or an error in program and to set the discontinuous outputs and field devices into a secure state. The object control is carried out with a help of coupling devices with objects. The open structure of controllers allows to build up and modernize microprocessor interlocking system, if such need occurs.

The field devices of microprocessor interlocking system includes switches, traffic lights, crossings equipment, etc. At the same time the typical signaling, centralization and blocking devices and schemes of its connections are used.

Microprocessor interlocking system is equipped with reserve system of control and visualization on the basis of computers with keyboards and displays (or projecting device, it depends on the scale of a station).

The structure of the microprocessor interlocking system allows coupling with existing devices of semi-automatic interlocking and automatic interlocking systems, and integrating of modern systems of interval regulation.

In the microprocessor interlocking system power unit with powerful source of uninterrupted power supply with an unwatched accumulator battery is used, which supplies the power the electronic devices and track circuits as well, electric drives, traffic lights, relays and it allows to exclude malfunctions at lightning discharges, short circuit in the contact system and other interferences.

The advantages of microprocessor interlocking systems comparing to relay interlocking system are:

• Higher level of reliability due to duplicating of many units, including central processor (the core of Microprocessor interlocking system) and uninterrupted information exchange between this processor and control objects (which increases the reliability level as well);
• Opportunity to gain control over control objects of many stations and spans from one working place;
• Iintegration opportunity of control over span signaling, centralization and blocking devices and devices of state monitoring of rolling-stock in one stationary processor device;
• Expanded set of technological functions, including route setting without opening a traffic light, switch blocking in a proper state, prohibitive traffic light, isolated sections for excluding of a route setting, etc.;
• Providing the operational and maintenance staff with extended information about signaling, centralization and blocking device state at a station, with an opportunity to transmit this information to center of railroal traffic control;
• Opportunity of centralized and dispatching placement of object controllers for the control of stationary and span objects;
• Relatively simple joining with higher level control systems;
• Opportunity of uninterrupted record-keeping of operational personnel activities to control objects and all the train situation at stations and spans;
• Availability of fitted diagnostic monitoring of hardware state of interlocking system and control and monitoring objects;
• Opportunity to register train numbers, which proceed through stations and spans, and malfunctions of control objects as well;
• Sufficiently lower external dimensions of equipment, and as a result, in 3-4 times lower range of buildings for its placement, which allows to substitute the obsolete systems without building new posts;
• Sufficiently lover volume of building and assembly jobs;
• Convenient technology for checking dependences without model due to usage of specialized debugging compilers;
• Term reduction of exclusion from work of stationary and span devices in cases of station’s track changing and connected with dependences of switches and signals;
• Using as an environment for data transmission between control devices and controlled objects not only cables with copper conductors, but optical fibers as well;
• Opportunity to call out from archives working parameters of field devices of signaling, centralization and blocking systems for prediction its states and planning of carrying out repairs and regulations, not allowing failures of these devices;
• Decreasing of operational costs due to decreasing system power intensity, decreasing for one order the number of electromagnetic relays and the length of the inside-post cables, implementation of modern unwatched power sources, exclusion from operation of bulky control panels and manipulators with a large number of handles and buttons of mechanical action.