RU2400388C1 - Stationary transceiver, multi-purpose generator and multi-purpose receiver of train speed acs - Google Patents

Stationary transceiver, multi-purpose generator and multi-purpose receiver of train speed acs Download PDF

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Publication number
RU2400388C1
RU2400388C1 RU2009110835/11A RU2009110835A RU2400388C1 RU 2400388 C1 RU2400388 C1 RU 2400388C1 RU 2009110835/11 A RU2009110835/11 A RU 2009110835/11A RU 2009110835 A RU2009110835 A RU 2009110835A RU 2400388 C1 RU2400388 C1 RU 2400388C1
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control
signal
generator
receiver
circuits
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RU2009110835/11A
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Russian (ru)
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Виталий Сергеевич Котов (RU)
Виталий Сергеевич Котов
Александр Дмитриевич Комаров (RU)
Александр Дмитриевич Комаров
Сергей Васильевич Пономарев (RU)
Сергей Васильевич Пономарев
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Виталий Сергеевич Котов
Александр Дмитриевич Комаров
Сергей Васильевич Пономарев
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Abstract

FIELD: transport.
SUBSTANCE: invention relates to train control systems and can be used in subway train traffic ACS. Transceiver performs automatic control over train speed proceeding from digital synthesis of analog signals controlling tolerable speed at controlled line sections by multi-purpose generator of ACS frequency sine signals based from feedback from digital processing of rail circuit tone frequency (RTF) receiver signal. CAS frequency signal multi-purpose generator and RTF signal generator make supply unit, while ACS frequency signal generator and multi-purpose RTF signal receiver make receiving unit, both being connected in turn to boundaries of track controlled sections. Bus interface allows interaction of all units of proposed device. Multi-purpose receiver comprises two signal conversion and processing circuits each connected to two control circuits by their potential outputs.
EFFECT: reduced expenses for hardware.
3 cl, 4 dwg

Description

The claimed technical solution relates to means of controlling the movement of trains and can be used in automated control systems for the interval movement of trains on subway lines.

A device for regulating the movement of trains containing supply and receiving (relay) nodes, respectively comprising signal generators of rail circuits and automatic locomotive signaling (ALS) and receivers (see RF patent No. 2098302, IPC B61L 23/16). The known device is intended for use in rail lines with insulating joints and allows you to control the gathering (short circuit) of the insulating joints due to a special circuit for connecting signal receivers of rail circuits. A disadvantage of the known device is the large amount of equipment (two receivers, additional filters in the receiving and supply nodes, a large number of burning contacts in the means of connecting to the ALS generator).

The closest in technical essence and adopted for the prototype is the transmitting and receiving device of the Dnepr automatic control system (see BC Dmitriev, V. A. Minin, “Self-locking systems with tonal frequency rail circuits”, M., “Transport”, 1992, p. .152-173).

The known device contains alternately connected to the boundaries of the monitored sections of the rail lines through matching transformers supply nodes, each of which includes a block for generating frequency signals of automatic speed control (APC), a block for generating frequency signals of tone rail circuits (SEC) and receiving nodes, each of which includes the receiver of the frequency signals of the mall and the unit for generating the frequency signals of the APC.

The APC frequency signal generation unit of the known device comprises a square-wave pulse generator made on a transistor LC generator and includes a transformer and a rectifier, a track amplifier, a track filter, relay circuits of a code signal generator and frequency selection circuits.

The frequency signal generating unit of the shopping and entertainment center contains a generator of amplitude-modulated frequency signals of the shopping and entertainment center, a track amplifier, and a band-pass filter.

The receiving unit is made on two series-connected typical receivers of amplitude-modulated signals, including analog filters, amplifiers and detectors.

A disadvantage of the known device is the limited reliability due to the large volume of equipment, a significant part of which is relay circuits.

The technical problem to be solved is the reduction of hardware costs, the elimination of relay circuits and the simplification of the device, which allows to increase reliability and also reduce its cost.

This problem is solved in that in a stationary receiving and transmitting device of a system for automatically controlling the speed of metro trains, which contains supply nodes alternately connected to the boundaries of the monitored sections of the rail line through matching transformers, each of which includes an ARS frequency signal generation unit and a shopping center frequency signal generation unit , and receiving nodes, each of which includes a receiver of frequency signals of the shopping center and a block for generating frequency signals of the APC, a control unit is introduced the automated workstation (AWS) connected to it and the linking units, and the APC frequency signal generating units and the shopping center frequency signal generating units are made in the form of universal sinusoidal signal generators of the APC and shopping center frequencies with an adjustable voltage level, combined by a bus interface with a control unit and blocks linkages.

Such a structure of the device, when the generators and receivers of the APC and SEC signals are shown in the form of universal generators and receivers, allows for the implementation of non-contact automatic control of the speed of subway trains based on digital synthesis of analog signals to control the permissible speed in a controlled area by the APC signal generator based on the results of digital processing the signals of the frequency receiver of the shopping center of this section. In addition, the use of sinusoidal signals as control signals eliminates additional harmonics (3, 5, 7, ...), which are indistinguishable in spectrum with APC signals, and accordingly exclude filters from the device. The result is a significant simplification of the device and increase its reliability.

A known signal generator of rail circuits (see RF patent No. 2253586, IPC B61L 23/16) and a signal receiver of rail chains (see RF patent No. 2253585, IPC B61L 23/16), the construction principle of which is based on digital synthesis of analog generator signals and analog-to-digital conversion and processing of rail line signals (RL) by the receiver.

The specified generator and receiver are the closest in technical essence and are taken as a prototype when evaluating the novelty of universal generators and receivers in the claimed transmitting and receiving device.

The RC signal generator according to patent No. 2253586, as well as declared, contains a power source connected to a power amplifier, and two signal processing microcontrollers. In addition, the generator contains an external interface module, external interface circuits, matching elements (ADC, analog filter, input transformer) and a safety module.

The power amplifier in the known generator is connected to the microcontroller through input transformers and external interface circuits. The generator generates output signals, which are the arithmetic sum of the signals of the shopping center and the locomotive signaling, and compares the generated signals with the given ones in shape, frequency spectrum and power.

The known generator cannot be used in the inventive device, because generates phase phase difference keying signals and amplitude code keying signals that are not used in speed control systems on the subway lines and does not provide digital control capabilities.

To solve the problem of generating sinusoidal signals of fixed frequencies from a standard series to a signal generator containing a power source connected to a power amplifier made according to a bridge circuit and two microcontrollers of signal processing, a third microcontroller, three ROMs and a blocking lock of the power amplifier are introduced, the half-bridge outputs of which respectively connected to the first and second microcontrollers, and the interlock inputs are connected through the interlock circuit to the first, second and third microcontrollers, inter yazannymi with corresponding ROM and with each other, wherein the power amplifier input is connected to the third microcontroller, the output - to the first and second microcontrollers, and the control input of the controlled pulse power source - to the control output of the first microcontroller.

The implementation of generators with the ability to control the voltage level allows you to adjust its level at different frequencies without the use of matching transformers with taps from the secondary winding and their switching circuits.

The universal receiver of the claimed device, as well as known according to the patent of the Russian Federation No. 2253585, contains two control circuits for potential outputs, a control and protection circuit and two signal conversion and signal processing circuits, each of which includes an ADC and a processor.

The known receiver also contains a local configuration interface, a current driver of the control signal and a digital synthesis signal of the control signal. The known receiver can be used to detect and process the signals of the SEC generator of the inventive transceiver device, however, it has the following disadvantages: complexity, in particular, the complexity of the implementation of safety schemes, significant hardware costs and large weight and size characteristics due to the presence of transformers in the circuits, as well as the impossibility of transmission digital interface information.

To eliminate these shortcomings, a universal receiver containing two potential output control circuits, a control and protection circuit, and two signal conversion and processing circuits, each of which includes an ADC and a processor, introduces a microcontroller interconnected with ROM and inputs connected to the outputs of potential output control circuits and the control and protection circuit contains two microcontrollers interconnected with the corresponding ROMs, one of the information inputs and the control output of each of which is connected to the corresponding the corresponding potential output control circuit, while the control outputs of each processor of the conversion and processing circuit are connected to both potential output control circuits.

In Fig.1 of the drawing, a device is presented explaining the essence of the claimed technical solution, in Fig.2 is an example implementation of a variant of the device with redundancy according to the “2 of 3” majority scheme, in Fig.3 is a universal generator of sinusoidal signals, in Fig.4 is a receiver .

The stationary transmitting and receiving device comprises an AWP 1, a control unit 2, linking blocks 3 1 -3 n , supply nodes 4 1 -4 m and receiving nodes 5 1 -5 m , connected alternately at the boundaries of the monitored sections L to the rail line 6 through matching transformers 7. Each supply node 4 1 -4 m includes a universal generator of sinusoidal signals 8 of one of the frequencies of the APC (75, 125, 175, 225, 275, 325 Hz) and a universal generator of sinusoidal signals 9 of one of the number of frequencies of the shopping center (420, 480 565, 720, 780 Hz with a modulation frequency of 8 or 12 Hz). The carrier frequencies and the modulation frequency of the generators 9 are selected in such a way that they are spaced apart at neighboring controlled sections of the rail line 6. The rms value of the output voltage of universal generators 8, 9 is separately regulated for each frequency in the range from 15 to 150 V in 1 V increments for APC signal generators and from 3 to 40 V in 1 V increments for SEC signal generators. If it is necessary to simultaneously send two APC signals to one point on the rail line, the APC 8 frequency signal generator of each supplying 4 and receiving 5 nodes is switched on with the possibility of switching its terminals between the windings of matching transformers 7 of its own and previous nodes (not shown in the drawing).

The receivers 10 receiving nodes 5 1 -5 m are built on the basis of independent analog-to-digital conversion of the current sensor signals through two measuring channels simultaneously. As a current sensor, a shunt is used, connected in series in a serviced rail line. The shunt is made in the form of two series resistors, each connected to its own measuring channel.

Each of the linking blocks 3 1 -3 n is designed to provide information about the current state of the system, about the number of free monitored sections of the rail line, information about the state of the arrows, information for the control system of the arrows, traffic control system, etc. and is made on microprocessor devices. Linking blocks 3 1 -3 n , control unit 2, generators 8, 9 and receivers 10 of all nodes are connected by a bus interface 11.

When redundant according to the majority of the scheme "2 of 3" (figure 2), the device contains three control units 2 1 , 2 2 , 2 3 , providing data input from the supply and receiving nodes 4, 5, the formation of control actions, the transfer of information to the AWP 1 about the current status of connected devices. The control units 2 1 , 2 2 , 2 3 on the independent buses 11 1 , 11 2 , 11 3 of the interface 11 are connected with the equipment of the receiving units 5, the supplying units 4 and with the linking units 3 1 -3 n and implement interval regulation depending on the train real-time environment. On independent buses 11 4 , 11 5 , 11 6, control units 2 1 , 2 2 , 2 3 are interconnected, with AWP 1 and with a critical command permission block 12, designed to indicate the train situation and the state of the system devices, as well as to configure level of output voltages of generators ARS and SEC 8, 9.

A universal generator of sinusoidal signals of frequencies APC 8 and frequencies of the shopping and entertainment center 9 (Fig. 3) contains an adjustable switching power supply (RIIP) 13, a power amplifier 14, ROM 15, 16, 17, a blocking circuit 18, made on two elements And, limiting the output current current sensor 19, microcontrollers 20, 21, 22. Microcontrollers 20, 21, 22 are interconnected with ROM 15, 16, 17, respectively, each of which stores network identifiers of interface buses and settings of the required voltage level for each of the operating frequencies. RIIP 13 is made in the form of a flyback transformer voltage source on a PWM controller with a MOSFET key and provides the conversion of the input rectified on the voltage rectifier. The power amplifier 14 is made according to the bridge circuit of the power inverter. The outputs of one half-bridge of the power amplifier are connected to the microcontroller 20, and the outputs of the second are connected to the microcontroller 21 to provide a comparison of the generated PWM pulses (pulse width modulation) with a reference in duration. For coordination during the implementation of the connection, a divider and a comparator can be used (not shown in the drawing).

The universal receiver (figure 4) contains two control circuits 23 1 , 23 2 potential outputs for connecting to them if necessary a relay, two signal conversion and signal processing circuits 24 1 , 24 2 , each of which includes an amplifier 25, an ADC 26 and a processor 27 The outputs of the control circuits 23 1 , 23 2 are connected to the microcontroller 28, interconnected with the ROM 29. The control and protection circuit is made on the microcontrollers 30, 31 and the ROM 32, 33. In the ROM 29, 32, 33 the identical data of the network identifiers are stored. The microcontroller 30 input and output connected to the control circuit 23 1 the first potential output, and the microcontroller 31 to the control circuit 23 2 the second potential output. The processor 27 of each conversion circuit 24 1 , 24 2 is connected to the control circuits 23 1 , 23 2 .

The device implements interval regulation of train movement based on determining the distance between trains by the number of free sections of the radar station and choosing the maximum permissible speed for each section. The working frequency of each APC 8 signal generator and voltage level is set on the interface buses 11 from the control unit 2. The voltage level is set depending on the length and configuration of the rail line, its distance from the stationary relay node. The dependences of the limiting train speed on the number of free sections of the rail line are predetermined and encoded as a separate station-specific piece of software for the control unit 2. The information is set in the form of dependency tables, where possible speed modes are determined for each controlled section depending on the number of free sections along the train. The speed is selected so that the braking distance under the current mode of movement is shorter than the length of the total number of free sections of the rail line.

When you turn on the device by the operator, the signal generators of the shopping center 9 begin to work in continuous mode; each generator transmits to the rail line 6 through the matching transformer 7 circuits a modulated tone signal of its carrier frequency from a number of frequencies indicated above. The carrier frequency and the modulation frequency of the signals of the signal generators of the shopping center 9 and the signal receivers of the shopping center 10 are set by jumpers at the inputs of the generators and receivers (not shown in the drawing). The receivers of the signals of the shopping center 10, each of which is configured to receive the frequencies of the signal generators of the shopping center 9 of two adjacent sections of the rail line 6, fix a certain signal level corresponding to the freedom of the controlled section, and transmit data to the control unit 2. At the same time, to the control unit 2 from the linking units 3 1 -3 n receives data packets containing information about the states of the inputs of the respective relay equipment not included in the stationary device.

When the train enters the controlled section, for example L 1 , of the rail line 6, the signal from the frequency generator of the shopping center 9 of the corresponding supply node, for example 4 1 , is shunted, the signal level at the end of the controlled section decreases and the corresponding information about the state of the busy section from the signal receiver of the shopping and recreation center 10 node 5 1 in a continuous mode enters the control unit 2 through the interface 11; the control unit 2 analyzes the received data, taking into account the set values of the permissible speed, forms data packets of the control and sends them via interface 11 to the APC signal generator of the receiving unit 5 1 and, if necessary, to the universal linking units 3 1 -3 n to provide control signals for relay equipment not included in the control system. The signal generator APC 8 of the receiving unit 5 1, based on data from the control unit 2, generates at its outputs one of the frequencies that sets the maximum permissible speed of the train in this section. In addition to the generation frequency for the APC 8 generator of the receiving unit 5 1, the control unit can also provide information on the frequency output by the APC 8 generator to the supply unit 4 2 following the corresponding maximum permissible speed in this section along the train. In this case, the APC generator simultaneously produces two signals at one point on the rail line by switching its terminals, as indicated above.

When the device of Fig. 2 is used, each control unit 2 receives data and controls the connected units 3 1 -3 n , the frequency signal generators APC and the mall and receivers on dedicated buses 11 1 , 11 2 , 11 3 , on which each object Management has a unique address. The outputs of linking units and generators are controlled from three independent control units according to the “2 out of 3” backup scheme, which increases reliability and reduces the likelihood of failures.

A universal generator of sinusoidal signals (figure 3) works as follows. Each microcontroller 20 and 21 polls its frequency setting circuit and reads the signal level values from the ROM 15 and 16. For the frequency generators of the shopping and entertainment center, the frequency-setting circuit is formed by jumpers at the input of the generators; for the frequency generators ARS, the frequency is set via the interface buses 11 from the control unit 2 based on the analysis of the data on the employment of the rail circuit 6. The microcontroller 20 generates a PWM signal corresponding to the operating voltage. The signal enters the RIIP 13 and sets the output voltage to its output. The output voltage of the RIIP 13 microcontrollers 20, 21 is checked for compliance with the specified. The microcontroller 22 controls the absence of a short circuit. If the control results are positive, the microcontrollers 20, 21, 22 make a coordinated decision on the synthesis of the working signal, and the microcontroller 22 generates a differential PWM signal of the working frequency, which enters the power amplifier 14, and from the power amplifier to the rail line 6 through the transformer circuit 7. Correctness of the PWM formation the signal and operation of the power amplifier 14 is controlled by feedback through the microcontrollers 20, 21 and 22. When faults are detected inside the circuit, the power amplifier is blocked by one of the microcontrollers ers through the blocking circuit 18. The results of diagnostics, self-diagnosis and regulation of the signal level via interface 11 are sent to AWP 1.

The universal receiver (figure 4) is built on the basis of analog-to-digital conversion of the signals of current sensors through two independent channels and works as follows. In the absence of a train in a controlled section, for example, section L 1 , the signal receiver of the SEC 10 of the receiving unit 5 1 receives amplitude-modulated signals from two adjacent signal generators of the SEC 9 of the supply nodes 4 1 and 4 2 , the frequencies of which spaced. The detection and processing of signals of both frequencies is carried out independently and simultaneously in each circuit 24 1 , 24 2 , the operating frequency of which is set when the microcontrollers 30 and 31 interrogate the corresponding frequency-setting circuit (jumpers). After amplifying the input signals by amplifiers 25 and converting them to the ADC 26, the processors 27 independently detect them and threshold the processing. The resulting signal of each processor 27 is fed to the first and second inputs of both potential output control circuits 23 1 , 23 2 and through the corresponding microcontroller 30, 31 to interface 11. At the same time, the microcontrollers 30 and 31 of the corresponding channels periodically (1 time in 2 seconds) the communication lines control the integrity of the jumpers, the operation of the respective processors 27, control circuits 23 1 , 23 2 and the operation of each other. The signals from the outputs of the microcontrollers 30, 31 are fed to the third inputs of the corresponding control circuits 23 1 , 23 2 , each of which gives potential if all three control signals have an active level. The appearance of potential on the control circuits is fixed by the microcontroller 28 and transmitted via the interface 11 to the control unit 2. Thus, information on the free and busy ways, as well as diagnostic information on the status of all control circuits, is constantly transmitted to the control unit 2 via the interface 11.

The inventive device provides reliable automatic speed control while reducing up to 70% of the equipment compared with the used system "Dnepr"

Claims (3)

1. Stationary receiving and transmitting device of a system for automatically controlling the speed of subway trains, which contains supply nodes alternately connected to the boundaries of the monitored sections of the rail line through matching transformers, each of which includes a block for generating signals of frequencies of automatic speed control (APC) and a block for generating frequencies of tone rail circuits (SEC), and receiving nodes, each of which includes a block for generating signals of frequencies of the APC and a receiver of frequency signals of the TR C, characterized in that a control unit, an automated workstation and linking units connected to it are introduced into the device, and the APC frequency signal generation units and the shopping center frequency signal generating units are made in the form of universal sinusoidal signal generators of the APC and SEC frequencies with an adjustable voltage level, at the same time, the universal generators of the sinusoidal frequencies of the APC and the shopping center, the control units, the linking units and the frequency signal receivers of the shopping center are connected by a bus interface.
2. A universal sinusoidal signal generator containing a power source connected to a power amplifier made in accordance with a bridge circuit and two microcontrollers for signal processing, characterized in that a third microcontroller, three read-only memory devices (ROM) and a power amplifier lock circuit are introduced into the generator, the half-bridge outputs of which are respectively connected to the first and second microcontrollers, and the interlock inputs are connected via the interlock circuit to the first, second and third microcontrollers, inter knitted with corresponding ROM and with each other, wherein the power amplifier input is connected to the third microcontroller, the output - to the first and second microcontrollers, control input controlled SMPS - a first control output of the microcontroller.
3. A universal receiver containing two potential output control circuits, a control and protection circuit and two rail signal conversion and processing circuits, each of which includes an analog-to-digital converter (ADC) and a processor, characterized in that the receiver contains a microcontroller interconnected with ROM and inputs connected to the outputs of the potential output control circuits, and the control and protection circuit - two microcontrollers interconnected with the corresponding ROMs, one of the information inputs and the control output d of each of which are connected to the respective output potential control circuit, wherein the control outputs of each processor conversion circuit and the processing circuits are connected to both manage the potential yield.
RU2009110835/11A 2009-03-26 2009-03-26 Stationary transceiver, multi-purpose generator and multi-purpose receiver of train speed acs RU2400388C1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2457134C1 (en) * 2011-01-19 2012-07-27 Виталий Сергеевич Котов Device for control of rail circuits condition
RU2465163C1 (en) * 2011-03-30 2012-10-27 Виталий Сергеевич Котов Receiver of tonal rail circuit
RU2465164C1 (en) * 2011-05-16 2012-10-27 Виталий Сергеевич Котов Device for automatic speed regulation signals shaping
RU2513341C1 (en) * 2012-10-10 2014-04-20 Открытое Акционерное Общество "Российские Железные Дороги" Method for continuous automatic cab signalling and apparatus for continuous automatic cab signalling
RU2519325C1 (en) * 2012-12-07 2014-06-10 Открытое акционерное общество "Научно-исследовательский и проектно-конструкторский институт информатизации, автоматизации и связи на железнодорожном транспорте" (ОАО "НИИАС") System to control train traffic
RU2663564C2 (en) * 2016-07-13 2018-08-07 Открытое Акционерное Общество "Российские Железные Дороги" System for train traffic regulation
RU2701231C1 (en) * 2018-07-27 2019-09-25 Закрытое акционерное общество "Ассоциация АТИС" Code electronic locking code generator
RU2728966C1 (en) * 2020-02-18 2020-08-03 Открытое Акционерное Общество "Российские Железные Дороги" Complex signal generator unit for locomotive signaling
RU2732636C1 (en) * 2019-07-30 2020-09-21 Федеральное государственное бюджетное учреждение "3 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации Intermittent train traffic control system at accelerated railway sections

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Дмитриев B.C., Минин В.А. Системы автоблокировки с рельсовыми цепями тональной частоты. - М.: Транспорт, 1992, с.152-173. *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2457134C1 (en) * 2011-01-19 2012-07-27 Виталий Сергеевич Котов Device for control of rail circuits condition
RU2465163C1 (en) * 2011-03-30 2012-10-27 Виталий Сергеевич Котов Receiver of tonal rail circuit
RU2465164C1 (en) * 2011-05-16 2012-10-27 Виталий Сергеевич Котов Device for automatic speed regulation signals shaping
RU2513341C1 (en) * 2012-10-10 2014-04-20 Открытое Акционерное Общество "Российские Железные Дороги" Method for continuous automatic cab signalling and apparatus for continuous automatic cab signalling
RU2519325C1 (en) * 2012-12-07 2014-06-10 Открытое акционерное общество "Научно-исследовательский и проектно-конструкторский институт информатизации, автоматизации и связи на железнодорожном транспорте" (ОАО "НИИАС") System to control train traffic
RU2663564C2 (en) * 2016-07-13 2018-08-07 Открытое Акционерное Общество "Российские Железные Дороги" System for train traffic regulation
RU2701231C1 (en) * 2018-07-27 2019-09-25 Закрытое акционерное общество "Ассоциация АТИС" Code electronic locking code generator
RU2732636C1 (en) * 2019-07-30 2020-09-21 Федеральное государственное бюджетное учреждение "3 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации Intermittent train traffic control system at accelerated railway sections
RU2728966C1 (en) * 2020-02-18 2020-08-03 Открытое Акционерное Общество "Российские Железные Дороги" Complex signal generator unit for locomotive signaling

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