RU2713776C1 - System of haul communication - Google Patents

Abstract

FIELD: electrical communication engineering.SUBSTANCE: invention relates to automatics, communication and computer engineering, namely to systems of haul communication. System of haul communication includes station access devices installed at stations limiting haul, haul communication talk-calling devices, access line haul devices interacting on a digital network using a primary digital channel in E1 format, fiber-optic communication line made on the basis of passive optical networks technology, for connection of access devices of the distillation accesses with station access devices, splitters are included in optical fiber of the fiber-optic communication line, each station access device is made in the form of a primary multiplexer.EFFECT: invention solves the problem of reducing power consumption of power supply of haul access devices.4 cl, 2 dwg

Description

The invention relates to the field of automation, communication and can be used in railway transport for the organization of distillation communication and communication with the place of emergency recovery work.

Known distillation communication system as part of the operational-technological communication for the railway section, containing switching stations, communication and dispatch channels, intercoms and linear distillation kits, while a cellular gateway is connected to the switching station through an additional linear distillation kit providing communication on a railway section from any point of the haul covered by cellular communication (RU 2393642 C2, Н04М 3/56, B61L 27/00, 11/27/2009).

The known system of distillation communication allows to improve the quality of communication, and also provides the ability to send a call from the station duty to a subscriber who is on the stage.

However, in the known communication system, failures in establishing a connection in an area with poor radio conditions are possible.

A known high-speed trunk distillation communication system comprising station access devices, distillation communication intercoms, a passive optical network communication network, optical line and network terminals, optical splitter ports, passive optical network fiber, distillation access devices containing a power supply from the network AC and two optical network terminals, telephones and video cameras of the site of emergency recovery work, equipment of railway automation and telemechanics ki, long-distance communication switches, ZhAT station equipment, operational-technological communication station switches with the station duty attendant consoles and corresponding transport network switches connected to them, fiber-optic communication lines, portable interface unit including an autonomous power supply unit and an optical network terminal (RU 2667686, B61L 27/00, 09.24.2018).

The well-known high-speed trunk communication allows increasing the speed and volume of transmission of discrete information, the quality and reliability of telephone communications, and providing immunity to industrial and atmospheric interference through the use of optical networks.

The disadvantage of this system is the amount of power consumed (12-15 W), which requires the use of a power source, which is usually available at the access point.

The technical result consists in reducing the power consumption of the power supply devices access through the use of power from the power source of the intercom distillation devices.

The technical result is achieved by the fact that the distillation communication system comprises station access devices installed at stations restricting the distillation, distillation communication and calling devices, distillation access devices interacting over a digital network using a primary digital channel in E1 format, a fiber-optic communication line made on the basis of technology of passive optical networks to ensure the connection of distillation access devices with station access devices in appropriate fiber of a fiber-optic communication line includes splitters, each station access device is designed as a primary multiplexer, the intercom and call device is equipped with a power source installed in its housing, the distillation access device includes two transceivers, the first of which is connected via a fiber optic splitter to the station device access of one of the stations, and the second - through the appropriate splitter on another fiber with a station access device of another station, analog new switch, encoder, decoder, control unit, amplifier, connected to the loudspeaker by an output, power supply unit, DC generator connected between the output of the power supply unit and the first input of the control unit, digital channel forming unit containing a digital stream switch, multiplexer, demultiplexer, detector a blocking signal, an optical transmitter control unit and a digital stream direction switch, and a socket for connecting a power supply of the intercom to the power supply unit, and p intercom-to-analog switch, the output of which through a series-connected encoder, channel multiplexer, a digital stream switch is connected to transceiver inputs, outputs connected through a series-connected digital stream switch, a demultiplexer and a decoder to an analog switch input directly and through an amplifier to a loudspeaker, the second input of the control unit is connected through a socket to one of the terminals of the intercom, and the output is connected to the control inputs log switch, demultiplexer and optical transmitter control unit, the output of the demultiplexer through the blocking signal detector is connected to the second input of the optical transmitter control unit connected to the control input of the digital stream switch, the control circuit of which is connected to the direction switch, the inputs / outputs of the primary multiplexer of each station are connected to network multiplexers of the bypass network, to the hardware-software device of the operator’s workstation with Stem monitoring and administration, and the lines of communication with space rescue and recovery operations, and a switch operatively-technological communication - to the remote assistant station and dispatch communication lines.

To increase the reliability of communication on the stage, the number of distillation access points is established based on the condition of the maximum attenuation of the optical line between the station access device and the most distant distillation access device not more than 36 dB.

In one of the options for organizing communication with the site of emergency recovery work, a communication device is used that is equipped with a power source installed in its housing and configured to connect to the socket of the distillation access device and a telephone from the site of emergency recovery work.

In another embodiment, the organization of communication with the place of emergency recovery work uses a communication device with an optical converter, while the optical fibers connecting the transceivers to the splitters include additional splitters for connecting their branches along the optical fiber with an additional socket for connecting a fiber optic line connected to a communication device with an optical converter, configured to connect telephone sets and a video camera from a disaster recovery site bot.

The invention is illustrated by drawings in FIG. 1 and 2.

The distillation communication system contains installed at stations 1 and 2, limiting the distillation, access devices station UDS 3 and 4, intercoms and call devices 5 distillation communications (PVU5), distillation access devices 6 (UDP 6), interacting over a digital network using a primary digital channel in E1 format, fiber-optic communication line 7 (FOCL line 7), based on the technology of passive optical networks. To ensure the connection of UDP 6 with UDS 3 and 4, respectively, splitters 8 and 9 are included in the corresponding fibers of the FOCL line 7.

The inputs and outputs of the UDS 3 and 4 are connected respectively to the network multiplexers 10 and 11 of the bypass network 12, to the hardware-software device of the automated workstation 13 of the operator of the monitoring and administration system and to the communication lines 14 to the place of emergency recovery work (lines 14 MAVR), and through the switch 15 operational-technological communication to the console 16 of the duty station and lines 17 dispatch communication.

Each PVU 5 is equipped with a power source installed in its housing.

Each UDP 6 includes two transceivers 18 and 19, the first of which through a splitter 8 along one line 7 of the fiber optic link is connected to the UDS 3 of station 1, and the second through the splitter 9 through another fiber optic line 7 of the fiber optic link from the station 4 of station 2, an analog switch 20, encoder 21, decoder 22, control unit 23, amplifier 24 loaded onto loudspeaker 25, power supply unit 26 in the form of a voltage converter, direct current generator 27 connected between the output of power supply unit 26 and the first input of control unit 23, and digital channel generation unit 28 .

The digital channel generating unit 28 comprises a digital stream switch 29, a multiplexer 30, a demultiplexer 31, a blocking signal detector 32, an optical transmitter control unit 33, and a digital stream direction switch 34.

Each UDP 6 includes a socket 35 for connecting the power supply of the intercom 6, made in the form of a battery 36, the intercom 6 to the power supply 26, and the conclusions of the intercom 6 to the corresponding input and output of the analog switch 22.

The output of the switch 20 through a series-connected encoder 21, a channel multiplexer 30, a digital stream switch 29 is connected to the inputs of the transceivers 18 and 19, the outputs of which are connected through a series-connected digital stream switch 29, a demultiplexer 31 and a decoder 21 to the input of the analog switch 22 directly and through an amplifier 24 to the speaker 25.

The second input of the control unit 23 is connected through a socket 35 to one of the terminals of the PED 5, and the output is connected to the control inputs of the analog switch 22, the demultiplexer 31, and the optical transmitter control unit 33.

The output of the demultiplexer 31 through the lock signal detector 32 is connected to the second input of the optical transmitter control unit 33 connected to the control input of the digital stream switch 29, the control circuit of which is connected to the digital stream direction switch 34.

As PVU 5, a TPS-C distillation communication tube with a keypad and tangent is used. An additional battery 36 is placed in the tube housing. The PVU 5 is connected to the analog switch 22 via an analog two-wire interface. The battery 36, which is part of TPS-C, ensures its continuous operation in the distillation mode up to 8 hours.

With the help of the PVU 5, tone dialing, “TRANSMISSION” mode control by pressing the tangent, negotiation in duplex mode with muting reception, power supply of the PVU 5 and UDP 6 devices are ensured.

The number of UDP 6 connected using splitters 8 (9) on the stage is determined based on the condition of maximum attenuation of the optical communication line between the primary access multiplexer and the most distant distillation access device 6 no more than 36 dB.

Analog communication with the site of emergency recovery work is organized through the UDP 6 and includes an adapter 37 for communication, equipped with a power source installed in its case (not shown) and configured to connect to socket 35 of the telephone 38 from the site of emergency recovery work .

Optical communication from the site of emergency repairs is carried out using MAVR telephones 43 and a MAVR video camera 44 connected via a fiber optic cable communication device 42 with a UDP connector 6 connected via splitter 39 and 40 and, respectively, splitters 8 and 9 to fiber optic line 7 communication connected to UDS 3 and 4, through which the connection is made with communication lines 14 of the MAVR.

The proposed system provides the organization of distillation communication and communication with the place of emergency recovery work using the primary digital channel E1.

Passive access to the fiber-optic communication line 7 is based on a branch of a certain part of the light flux transmitted through the line using a passive device (which does not require power supply) - splitters 9 and 8.

Splitters 8 provide communication UDP 6 with station 1, splitters 9 - with station 2.

To organize two-way communication from station 1 (2) to the side of the haul along each core of network 7, transmission is carried out on a wavelength of λ1, reception on λ2. In each UDP 6 transmission is carried out respectively at λ2, reception - at λ1.

UDS 3 and 4 at stations 1 and 2, limiting the stage, and in UDP 6 on the stage, the electrical signal is converted into an optical signal in transmission to a fiber-optic communication line 7 and optical to electrical in UDP in 6 with the organization of interfaces designed for connecting PVU 5, communication devices 37 and a switch 20 for arranging distillation telephone communication and communication with the emergency recovery work site.

As a UDS 3 (4) interacting with UDP 6, a primary multiplexer is used, which selects 30 main digital channels (BCC) and generates analog two- and four-wire terminations for distant telephone communication and communication with the emergency recovery site, paired with stations 1 and 2 with OTC and OBTS equipment, for example, the MK-2048-O multiplexer equipped with transceivers, which ensure its interaction with the optical line.

The encoded speech signal from the UDS 3 (4) station 1 (2) to the UDP points 6 is transmitted over two channel intervals KI1 and KI2.

The interaction of the UDS 3 (4) with the equipment for operational-technological communication is carried out via the FXO interface, calculated for connection to the switch 15.

Connections and negotiations in the distillation communication system are carried out in the following order:

- connect the PVU 5 and the battery 36 to the socket 35 of the UDP 6, while connecting the PVU5 to the analog switch 20, and the battery 36 to the power supply 26;

- set the switch toggle switch 34 to the position "direction to station 1 or station 2";

- they dial a two-digit number on the PLD 5 to receive the station response signal, after receiving the station answer, dial the number of the station attendant 1 or station 2 attendant or the dispatcher of the corresponding service on the PVU 5 dialer, while at the station 17 station or 2 station dispatcher the corresponding service should receive a call signal from the corresponding UDP 6;

- the response of the station attendant is transmitted to UDP 6 and is reproduced in the telephone of the PMU5 and in the loudspeaker 25;

- negotiations are conducted in simplex mode by pressing the PVU5 tangents during transmission;

- the station attendant has the ability to interrupt, audible through the loudspeaker 26, when the PVU 5 tangent is pressed;

- Disconnection is carried out either at the initiative of the station attendant, or automatically in the absence of negotiations.

When negotiating a speech signal from the PED 5, the analog switch 20 transmits through the encoder 21, converting it into a digital signal, into the channel multiplexer 30. The channel multiplexer 30 forms a transmission cycle and transmits a coded speech signal through the switch 29 of the digital stream to the transceiver 18 or 19 in the third channel interval (KI3) of the E1 transmission cycle and at the same time, by pressing the PVU 5 tangent, transmits a blocking code signal for subscribers to KI 4 driving to other UDP 6.

The transceiver 8 (9) converts the generated digital signal into an optical one and transfers it through the splitters 39 and 8 (40 and 9) to the UDS 3 (4) input, which converts the optical signal into an electric signal and directs it through switch 15 to the remote control 16 of the chipboard or line 17 dispatch communication to the remote controller.

The speech signal of the station attendant from the console 16 through the switch 15 or from the console of the respective dispatchers via the dispatcher communication lines 17 is transmitted to the UDS 3 (4), which encodes it and converts it into an optical signal, followed by direction along the FOCL line 7 through splitters 8 (9) and 39 (40) to the points of UDP 6 of the called subscriber at two channel intervals KI1 and KI2.

In UDP 6, the transceiver 18 (19) converts the optical signal into an electric signal and transmits it through the switch 29 of the digital channel to the demultiplexer 31.

When the PVU 5 tangent is not pressed, the signal from KI2 arrives with a shift by one code interval, i.e. in KI3, from the output of the demultiplexer 31 to the decoder 22, which converts the digital signal into an analog signal, from the output of which, through the analog switch 20 and socket 35, the analog signal is fed to the PED 5 for playback, as well as through the amplifier 24 for playback by the speaker 27.

When the PVA 5 tangents are pressed, the signal from KI1 with a shift by two KI is received from the output of the demultiplexer 31 to the decoder 22, and the PM output signal from the decoder 22 through the amplifier 24 is reproduced only by the loudspeaker 25, as a result of which the station duty officer or the corresponding voice dispatcher interrupt the signal of the subscriber haul.

The analog switch 20 (reception / transmission), the demultiplexer 31, and the optical transmitter control unit 33 are controlled by the control unit 23 when the PVU 5 tangent is pressed.

The detector 32 of the blocking signal when receiving the code from KI4 blocks the optical transmitter control unit 33, as a result of which the λ1 transmitter does not turn on during transmission from another UDP 6, the blocking signal from which is transmitted to KI4 as a result of inversion to the UDS 3 (4).

Negotiations between haul subscribers are carried out as a result of a permanent conference in UDS 3 (4) between KI2 and KI3.

When organizing communication with the place of emergency recovery work (MAVR), two connection options are used.

In the first embodiment, the organization of communication with the place of emergency recovery work using a transition device 37 communications.

With this method of organizing communication with the site of emergency recovery work to one of the stations 1 (2), the adapter 37 is installed on the site of the emergency recovery work and is connected to the socket 35 of the UDP 6 through a two-wire field cable through an adapter (not shown).

A power source in the form of rechargeable batteries and a lightning protection device is installed in the adapter and in the communication device 37, in addition, an acoustic calling device is installed in the device 37. Rechargeable batteries are used respectively to power the UDR 6 and the telephone 38.

A telephone 38 of the emergency response site is connected to the communication device 37 for communication with the duty officer at station 1 (2), the railway department, and the railway situation center.

Each of the communication channels with the dispatcher, road management and the situational center of the railway operate independently of the others.

The establishment of communication on each channel is as follows:

- when removing the handset, a station response signal appears, after which the number of the called subscriber (object) is dialed;

- negotiations are conducted in duplex mode;

- after negotiations, the disconnection is carried out when installing the handset in the holder of the telephone 38.

When an incoming connection is established, a ring signal is received on the telephone 38, upon reception of which an acoustic ring signal is reproduced.

If the communication is lost in the direction used, the connection through the station 1 (2) of the telephone sets 38 with MAVR is established in a different direction through another station 2 (1), limiting the driving.

On the UDP 6, to which the connecting cable is connected with the communication device 37, the optical transmission path towards the station 1 is constantly on and blocks the rest of the UDP 6 from being connected in this direction.

Distillation communication in this mode on other UDP 6 operates in the direction of station 2.

In the second version of the organization of communication with the place of emergency recovery work, a communication device 42 with an optical converter is used, which is installed at the place of work and is connected to the socket 41 of the UDP 6 by means of an optical cable.

As the device 42 for communication with the optical converter, a primary multiplexer is used, similar in function to the UDS 3 (4), made taking into account the application in outdoor conditions.

Socket 41 is connected through splitters 39 and 8 to UDS 3 installed at station 1, and through splitters 40 and 9 to UDS 4 installed at station 2.

Telephone devices 43 or a switch for connecting telephone sets 43 are connected to the communication device 42 through the corresponding analog interfaces for communication with the dispatcher, road control and the situation center.

When organizing communication with MAVR, it is possible to transmit video information about the accident object and the progress of restoration work from the video camera 44 to the situational center or road management. Video camera 44 for transmitting video information is connected directly to the communication device 42 or to a switch connected to the communication device 42. When this video transmission is carried out simultaneously with the provision of telephone communications.

The communication device 42 includes batteries that provide power to the device itself, as well as telephones 43 and a video camera 44.

In case of communication failure on the main fiber-optic access line 7 to the UDS-3, they automatically organize the bypass channel through the network server 11 via the bypass transport network 12 and server 10. Moreover, the delay for switching on the bypass channel should not exceed 3 s.

To improve the reliability of communication, the state of the fibers of the fiber-optic communication line 7 used for distillation is monitored to monitor the light flux transmitted from the UDS 3, and the light flux transmitted from station 1 is monitored at station 2 and vice versa.

For monitoring, a control device (not shown) is connected to each fiber of the distillation bond 7 at one end. Monitoring of UDP devices 6 is carried out in accordance with the maintenance schedule by alternately turning on the power supply by connecting the PMD 5 with a functional check in the direction of stations 1 and 2.

The hardware-software device of the workstation 13 of the operator of the monitoring and administration system (AWP 13 SMA) is connected to the UDS 3 (4), which has interfaces for local and remote monitoring.

AWP 13 SMA has access to a unified monitoring and administration system (ECMA).

Thus, the proposed system provides the organization of distillation telephone communication and communication with the place of emergency recovery work on the basis of the primary digital channel E1 with a minimum amount of power consumption of the UDP 6, which converts the optical signal into an electric signal, reliable communications due to the absence of mutual influences between the various types of communication in the common cable (fiber) and the absence of industrial interference, and also allows to reduce construction and operating costs.

Claims (4)

1. A distillation communication system comprising station access devices installed at stations restricting the distillation, distillation intercoms and call devices, distillation access devices interacting over a digital network using a primary digital channel in E1 format, a fiber-optic communication line made on based on technology of passive optical networks, to ensure the connection of distillation access devices with station access devices, into the optical fiber of a fiber-optic communication line Splitters are acquired, each station access device is designed as a primary multiplexer, the intercom and call device is equipped with a power source installed in its housing, the distillation access device includes two transceivers, the first of which is connected via fiber optic to the station access device of one of the stations, and the second - through the appropriate splitter over another fiber - with a station access device of another station, an analog switch, an encoder, a decoder, a control unit a amplifier, an output connected to the loudspeaker, a power supply unit, a direct current generator connected between the output of the power supply unit and the first input of the control unit, a digital channel generating unit containing a digital stream switch, a multiplexer, a demultiplexer, a blocking signal detector, an optical transmitter control unit and a switch for the direction of the digital stream, and a socket for connecting the power source to the power supply, and the intercom system - to the analog switch, the output of which is Through a series-connected encoder, channel multiplexer, a digital stream switch connected to transceiver inputs, outputs connected through a digital stream switch connected in series, a demultiplexer and a decoder to an analog switch input directly and through an amplifier to a loudspeaker, the second control unit input is connected through a socket to one of the terminals intercom, and the output with the control inputs of the analog switch, demultiplexer and optical control unit sensors, the output of the demultiplexer through the blocking signal detector is connected to the second input of the optical transmitter control unit, connected to the control input of the digital stream switch, the control circuits of which are connected to the direction switch, the inputs / outputs of the primary multiplexer of each station are connected to network multiplexers of the bypass network, to the hardware software device for the automated workstation of the operator of the monitoring and administration system and communication lines with the emergency tanovitelnyh works, and via a switch operatively-technological communication - to the remote assistant station and dispatch communication lines. 2. The system according to claim 1, characterized in that on the stage the number of access points of distillation devices is set based on the condition of maximum attenuation of the optical line between the station access device and the most distant distillation access device not more than 36 dB. 3. The system according to p. 2, characterized in that it includes a communication device equipped with a power source installed in its housing and made with the possibility of connection with the socket of the distillation access device and the telephone from the place of emergency recovery work. 4. The system according to claim 2, characterized in that the optical fibers connecting the transceivers to the splitters include additional splitters for connecting their branches along the optical fiber with an additional socket for connecting a fiber optic line connected to a communication device with an optical converter configured to connecting telephone sets and video cameras from the site of emergency recovery work.

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