RU2769581C1 - System for automatic monitoring of access devices of stills and method of operation of this system - Google Patents

Abstract

FIELD: monitoring access devices.

SUBSTANCE: invention relates to means for monitoring access devices. The system includes two terminal stations A and B, 1+n blocks of the access device of the stage and a fiber-optic communication line. Each terminal station contains a block of automated workstation with installed monitoring and administration system MAS-PSD-3 and a station access device block, which contains an L3 Ethernet switch block, a switching station block and 1+n blocks of SFP modules located in the Ethernet- L3 switch, each of which transmits at its own wavelength and a CWDM multiplexer/demultiplexer unit. Each block of the distillation access device contains a pair of blocks of Ethernet switches L3, two blocks of the SFP module, a power supply block, a block of intercom, a block of optical switches OP installed in the gap between the outputs of the OADM block and the SFP module block. The system further comprises 1+n wavelength division multiplex OADM blocks, the number of which is always equal to the number of haul access device blocks.

EFFECT: expansion of the functionality of the system based on CWDM technology is implemented.

2 cl, 2 dwg.

Description

The invention relates to the field of automation, communications and can be used in railway transport for automatic monitoring of the state and availability of access devices for the stage.

Prior Art

Closest to the claimed invention is the RF patent for the invention No. 2393642 B61L 27/00, H04M 3/56 "SYSTEM OF OPERATIONAL-TECHNOLOGICAL COMMUNICATION FOR THE RAILWAY SECTION".

The system contains switching stations, channels of station and dispatch communication and intercoms, while a cellular communication gateway is connected to the switching station through an additional linear set of haul communication, providing communication on the railway section from any point of the haul with cellular coverage. EFFECT: expansion of functionality due to a differentiated approach to the number of cellular communication equipment installed on the sites, depending on the need for this type of communication on the site and the capabilities of the installed switching equipment.

The system allows you to control the lines of haul and interstation communication for the section of the railway. To do this, automatic line monitoring devices of two neighboring stations are connected to a hop or inter-office communication line and its integrity is checked by transmitting a tone signal from one automatic line monitoring device to another. Lines are monitored periodically without breaking the checked lines at the moment when the line is not busy. The analysis of the occupancy of the line of communication is carried out by the value of the linear voltage, at the same time the noise level in the line is analyzed. An increased noise level, the absence of line voltage, or the duration of an occupation above the set threshold is perceived as an accident on the PGS line.

The disadvantages of the proposed system are that the proposed system cannot be used for automatic monitoring of the loop communication, built on the basis of fiber-optic communication lines (FOCL), as well as its lower reliability due to the susceptibility of the analogue line itself to electromagnetic interference.

Disclosure of invention

The technical objective of this invention is

- Increasing the efficiency of hop communication based on CWDM technology.

- Possibility to detect malfunctions of elements of distillation access devices.

- Possibility to control distillation access devices that are in active and passive state and operate on the principle of a two-fiber communication scheme, incl. OPO based on CWDM technology.

The set technical problem is solved due to the fact that the system of automatic monitoring of access devices of the stage includes two terminal stations A and B, 1 + n access nodes of the stage and a fiber-optic communication line. Each end station contains an automated workstation (AWS) with an installed monitoring and administration system SMA-PSD-3 and a station access device that contains one or more L3 Ethernet switches, a switching station and 1 + n SFP modules located in the Ethernet switch L3, each of which transmits at its own wavelength and one or more CWDM multiplexers / demultiplexers. Each access node contains a pair of L3 Ethernet switches, two SFP modules, a power supply, an intercom and additional equipment. The device for organizing hop communication additionally contains 1 + n OADM blocks (wave division multiplexing device), the number of which is always equal to the number of hop access nodes, and an optical switch block (OP) from the side of the nearest terminal station, installed in the gap between the outputs of the block OADM and block SFP module.

Implementation of the invention

In Fig.1. Schematic representation of the system for automatic monitoring of distillation access devices.

In Fig.2. A fragment of the system for automatic monitoring of access devices for distilleries is presented, which reveals in detail the passage of a signal through an optical switch when monitoring access devices for distilleries.

The system for automatic monitoring of access devices on the stage contains two terminal stations A 1 and B 2, between which a permanent communication channel is organized over a fiber-optic cable 3 at one of the wavelengths not used in this section and 1 + n blocks of access devices on the stage 4. Each terminal station 1 and 2 contains a workstation unit AWP 5 with an installed monitoring and administration system SMA-PSD-3 and a station access device unit 6, which contains one or more units of an Ethernet switch L3 7, a switching station unit 8 and 1 + n SFP units modules 9 located in the L3 Ethernet switch block 7, each of which transmits at its own wavelength and one or more CWDM blocks of optical multiplexers / demultiplexers 10.

The system additionally contains 1+n blocks of OADM multiplexing devices 11 with division by wavelength, the number of which is always equal to the number of blocks of access devices distillation 4.

Each block of the access device of the stage 4 contains a pair of blocks of Ethernet switches L3 7, two blocks of SFP modules 9, a power supply block 12, an intercom block 13, an additional equipment block 14 and a block of optical switches OP 15 from the side of the nearest end station 1 or 2, installed in the gap between the outputs of the OADM block 11 and the SFP block of the module 9, and the optical switch block 15 has two inputs P1 and P2, and four outputs - P1', P1'', P2' and P2'', while the input P1 connected to output P1'', and input P2 to output P2'', inputs P1 and P2 of the optical switch block are connected to the Drop and Add pins of the OADM 11 block, outputs P1' and P2' to the receiver and transmitter of the SFP module block 9, and the outputs P1'' and P2'' - to each other.

The system works as follows.

Between the blocks of access devices of the stage 4 and the terminal station 1 or 2 closest to each of them, a permanent communication channel is organized via a fiber-optic cable 3 at the same wavelength as that of the corresponding block of the access device of the stage 4.

Then, a digital optical signal from the L3 Ethernet switch block 7 as part of the station access device block 6 A at a certain wavelength is transmitted to the CWDM block - optical multiplexer / demultiplexer 10 through the transmitter of the SFP module block 9 corresponding to that block of the station access device 4, monitoring which is carried out.

Then, by means of the optical multiplexer / demultiplexer unit 10, the signal at a given wavelength is combined with signals at other wavelengths from other blocks of SFP modules 9 into a common optical signal and transmitted to the optical fiber, which is transmitted from terminal station A 1 to the device unit distillation access 4.

After the transmitted signal at a certain wavelength as part of the common optical signal reaches the OADM 11 operating at the same wavelength, it is filtered in this OADM 11 block from the common optical signal, and the filtered optical signal is fed to the optical switch block 15 of the device block access distillation 4 to the input P1.

Further, if the access device block of the distillation 4 is in a passive state, the optical signal is fed to the output P1 "connected to the output P2", and through the input P2 is transmitted back to the OADM 11 block, where it is added to the common optical signal and returned to the optical multiplexer / demultiplexer unit 10, from where the digital optical signal is fed to the receiver of the SFP module unit 9, the same one from which the signal was sent from the end station A 1 to the access device unit of the stage 4 installed in the Ethernet switch unit L3 7, with this receives a link signaling that the receiver of the SFP module 9 receives an optical signal, and the transmitter of the SFP module 9 transmits an optical signal.

If the fiber-optic cable 3 breaks and/or the block of the access device of the distillation 4 is destroyed, the link is not received.

If the distillation access device block 4 is in an active state, the optical signal filtered from the common optical signal using the OADM block 11 is fed into the optical switch block 15 of the distillation access device block 4 to the input P1, then the signal through the output P1' of the optical switch block 15 is fed into the receiver of the SFP module block 9, directed towards the end station A 1 and installed in the block of the Ethernet switch L3 7, the signal enters the block of the Ethernet switch L37, then through the same transmitter of the SFP module block 9, the optical signal is fed to the output of the optical block switch 15 P2', then the signal through input P2 is fed back to the OADM block 11, where it is added to the common optical signal and returned to the optical multiplexer / demultiplexer block 10, from where the digital optical signal is fed to the receiver of the SFP module block 9, the same from which the signal was sent from the terminal station A 1 to the block of the access device of the distillation 4 installed in the block Ethernet switch L3 7, while receiving a link signaling that the receiver of the SFP module 9 receives an optical signal, and the transmitter of the SFP module 9 transmits an optical signal.

If the fiber-optic cable is broken and/or the access device is destroyed, the link is not received.

The advantages of the proposed solution are:

Possibility of monitoring individual parameters and modules of the equipment of the stage communication.

Possibility to monitor the presence of hop communication devices in passive mode (without the need to organize their permanent power supply).

Ability to monitor the integrity of the fiber optic cable.

All of the above confirms the fulfillment of the technical task of the present invention, namely, the increase in the efficiency of the hop communication based on CWDM technology, the ability to detect malfunctions of the elements of the hop access devices, the ability to control the hop access devices that are in the active and passive state and operate on the principle of a two-fiber communication scheme, including OPO based on CWDM technology.

Industrial Applicability

All of the above speaks of the industrial applicability of the system and method for automatic monitoring of distillation access devices.

List of abbreviations.

1. AWP - workstation;

2. SMA-PSD-3 - a system for monitoring and administering the production of JSC "Sphere Telecom";

3. CWDM - (Coarse Wavelength Division Multiplexing) sparse spectral division multiplexing;

4. OADM - (Optical Add Drop Multiplexor) optical input-output multiplexer of the CWDM system, which extracts a signal from the optical line at a given wavelength, and passes the rest of the radiation unchanged;

5. P1, P2 - optical switch inputs connected to the Drop and Add OADM pins;

6. P1', P2' - optical switch outputs connected to the receiver and transmitter of the SFP module;

7. P1”, P2” - optical switch outputs connected to each other;

8. SFP - (Small Form-factor Pluggable) industry standard for modular compact transceivers (transceivers) used to transmit and receive data in telecommunications.

List of positions.

1. end station A,

2. end station B,

3. fiber optic cable,

4. distillation access device block,

5. block of workstation workstation,

6. station access device block,

7. Ethernet switch block L3,

8. switching station unit,

9. block SFP module,

10. block CWDM optical multiplexer / demultiplexer,

11. block OADM multiplexing device,

12. power supply unit,

13. intercom block,

14. block of additional equipment,

15. block of optical switches OP.

Claims (2)

1. The system for automatic monitoring of access devices of the stage, containing: two terminal stations A and B, between which a permanent communication channel is organized via a fiber-optic cable at one of the wavelengths not used in this section, 1 + n blocks of access devices of the stage, each the terminal station contains a block of automated workstation AWP with installed monitoring and administration system SMA-PSD-3 and a station access device block, which contains at least one block of the L3 Ethernet switch, a block of a switching station and 1 + n blocks of SFP modules located in the block Ethernet switch L3, each of which transmits at its own wavelength and at least one block of CWDM optical multiplexers / demultiplexers, while the system additionally contains 1+n blocks of OADM devices with wavelength division multiplexing, the number of which is always equal to the number of device blocks access distilleries, and each block of devices The stage access device contains a pair of L3 Ethernet switch blocks, two blocks of SFP modules, a power supply block, an intercom block, an additional equipment block, and an OP optical switch block from the side of the nearest end station, installed in the gap between the outputs of the OADM block and the SFP block module, and the optical switch unit has two inputs P1 and P2, and four outputs - P1', P1'', P2' and P2'', while the input P1 is connected to the output P1'', and the input P2 is connected to the output P2' ', the inputs P1 and P2 of the optical switch unit are connected to the Drop and Add terminals of the OADM unit, the outputs P1' and P2' are connected to the receiver and transmitter of the SFP module unit, and the outputs P1'' and P2'' are connected to each other. 2. The method of automatic monitoring of the access devices of the stage consists in the fact that between the units of the access devices of the stage and the terminal station closest to each of them, a permanent communication channel is organized via a fiber-optic cable at the same wavelength as that of the corresponding unit of the access device of the stage, then, a digital optical signal from the L3 Ethernet switch block as part of the access device block of station A at a certain wavelength is transmitted to the CWDM block - optical multiplexer / demultiplexer through the transmitter of the SFP module block corresponding to that block of the access device of the stage, which is monitored, then by means of optical multiplexer/demultiplexer blocks combine the signal at a given wavelength with signals at other wavelengths from other blocks of SFP modules into a common optical signal and transmit it to the optical fiber, which is used to transmit from terminal station A to the access device block of the stage, after the transmitted signal at a certain wavelength as part of the common optical signal reaches the OADM block operating at the same wavelength, it is filtered in this OADM block from the common optical signal and the filtered optical signal is fed to the optical switch block of the distillation access device to the input P1, then, if the distillation access device block is in a passive state, the optical signal is fed to the output P1 "connected to the output P2", and through the input P2 is transmitted back to the OADM block, where it is added to the common optical signal and returned to the optical multiplexer / demultiplexer unit, from where the digital optical signal is fed to the receiver of the SFP module unit, the same one from which the signal was sent from terminal station A to the access device unit of the stage installed in the L3 Ethernet switch unit, while receiving a link signaling that the receiver of the SFP module receives an optical signal, and the transmitter unit and the SFP module transmits an optical signal, and if the fiber-optic cable is broken and / or the access device block is destroyed, the link is not received, while if the access device block is in the active state, the optical signal filtered from the general optical signal using the OADM block is fed into the optical switch block of the distillation access device block to the input P1, then the signal is fed through the output P1' of the optical switch block to the receiver of the SFP module directed towards the end station A and installed in the block of the Ethernet switch L3, the signal enters the Ethernet block -switch L3, then through the same transmitter of the SFP-module block, the optical signal is fed to the output of the optical switch block P2', then the signal is fed back through the input P2 to the OADM block, where it is added to the common optical signal and returned to the optical multiplexer / demultiplexer block , from where the digital optical signal is fed to the receiver of the SF block P-module, the same one from which the signal was sent from end station A to the block of the access device installed in the L3 Ethernet switch block, at the same time, a link is received signaling that an optical signal is being received at the receiver of the SFP module block, and the transmitter of the SFP module unit transmits an optical signal, and if the fiber-optic cable is broken and/or the access device is destroyed, the hop link is not received.

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