CN107947858A - Service operation condition monitoring system - Google Patents
Service operation condition monitoring system Download PDFInfo
- Publication number
- CN107947858A CN107947858A CN201711304106.0A CN201711304106A CN107947858A CN 107947858 A CN107947858 A CN 107947858A CN 201711304106 A CN201711304106 A CN 201711304106A CN 107947858 A CN107947858 A CN 107947858A
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- Prior art keywords
- station
- convergence
- transmission device
- optical transmission
- terminal equipment
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 230000003287 optical effect Effects 0.000 claims abstract description 46
- 239000013307 optical fiber Substances 0.000 claims description 35
- 238000012360 testing method Methods 0.000 claims description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/14—Distribution frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/14—Distribution frames
- H04Q1/141—Details of connexions between cable and distribution frame
Abstract
This application involves a kind of business on-line monitoring system, more particularly to a kind of communication service operating state monitoring system;It includes monitoring convergence device, webmaster end, convergence station Digital Distribution Frame, convergence station optical transmission device, first station optical transmission device, first station Digital Distribution Frame, first station monitor terminal equipment, first station channel end, intermediate station optical transmission device, intermediate station Digital Distribution Frame, intermediate station monitor terminal equipment, second station optical transmission device, second station monitor terminal equipment, second station channel end;The output terminal of monitoring convergence device is connected to webmaster end by cable.Due to implementing above-mentioned technical proposal, the application only needs the both ends by the fibre circuit for needing to monitor to be respectively connected to first station channel end, second station channel end;The attenuation change of this section of fibre circuit can be monitored or situation about interrupting occur, and reflected in real time by webmaster end, find light path hidden danger can timely processing, reduce the unplanned interruption times of passage, improve reliability.
Description
Technical field
This application involves a kind of communication service on-line monitoring system, more particularly to a kind of service operation condition monitoring system.
Background technology
The communications industry does not have on-line monitoring system also at present, it is impossible to accomplishes in the case of non-interrupting service to important service
Passage be monitored.Now with the popularization of Intelligent transformer station, the secondary information and monitoring information of each website depend on
In power optical fiber passage, if optical-fibre channel attenuation where business is excessive or light path is interrupted, station end signal will be caused to will be unable to return,
Influence the security of Operation of Electric Systems.
The content of the invention
The purpose of the application is to propose a kind of reflection optical-fibre channel in time, scents a hidden danger in time, improve channel reliability
Service operation condition monitoring system.
What the application was realized in:Service operation condition monitoring system, it includes monitoring convergence device, webmaster end, converges
Poly- station Digital Distribution Frame, convergence station optical transmission device, first station optical transmission device, first station Digital Distribution Frame, first station monitor terminal are set
Standby, first station channel end, intermediate station optical transmission device, intermediate station Digital Distribution Frame, intermediate station monitor terminal equipment, second station light pass
Transfer device, second station monitor terminal equipment, second station channel end;The output terminal of monitoring convergence device is connected to webmaster by cable
End, the input terminal for monitoring convergence device are connected to the output terminal of convergence station optical transmission device by cable, monitor convergence device
Input terminal is also connected by coaxial cable with convergence station Digital Distribution Frame, and convergence station Digital Distribution Frame passes through coaxial cable and convergence
The output terminal of optical transmission device of standing is connected;Convergence station optical transmission device input terminal by optical fiber respectively with first station optical transmission device
Output terminal, output terminal, the output terminal of second station optical transmission device of intermediate station optical transmission device be connected;First station optical transmission device
Input terminal is connected by coaxial cable with first station Digital Distribution Frame, and first station Digital Distribution Frame is monitored eventually by coaxial cable and first station
The output terminal of end equipment is connected, and the input terminal of first station monitor terminal equipment is connected to first station channel end by optical fiber;Intermediate station
The input terminal of optical transmission device is connected by coaxial cable with intermediate station Digital Distribution Frame, and intermediate station Digital Distribution Frame passes through coaxial
Cable is connected with the output terminal of intermediate station monitor terminal equipment;The input terminal of second station optical transmission device is monitored by cable and second station
The output terminal of terminal device is connected, and the input terminal of second station monitor terminal equipment is connected to second station channel end by optical fiber.
Further, the input terminal of first station monitor terminal equipment is also associated with first station intermediate station ODF by optical fiber;Intermediate station
The input terminal of monitor terminal equipment is connected to intermediate station first station ODF, intermediate station second station ODF by optical fiber;The monitoring of second station is eventually
The input terminal of end equipment is also associated with second station intermediate station ODF by optical fiber.
Further, monitor convergence device include can realize interconnection function master control borad, be connected webmaster with master control borad
Plate, the Ethernet interface being connected with master control borad convergence plate, the coaxial interface convergence plate being connected with master control borad;Webmaster plate
It is connected by cable with webmaster end, convergence station Digital Distribution Frame converges plate with coaxial interface by coaxial cable and is connected, and converges
The output terminal of optical transmission device of standing converges plate by cable and Ethernet interface and is connected.
Further, monitor terminal equipment in first station includes power supply changeover device, control board, test cell, output coaxially
Interface, output Ethernet interface, input optical fibre interface;Power supply changeover device is connected with the power end of control board, control circuit
The output terminal of plate is connected with the input terminal of test cell, and the output terminal of test cell is respectively with exporting coaxial interface, output ether
Network interface is connected, and the input terminal of control board is connected with input optical fibre interface;Input optical fibre interface respectively with first station intermediate station
ODF, first station channel end are connected;Output coaxial interface is connected with first station Digital Distribution Frame.
Further, intermediate station monitor terminal equipment, the structure of second station monitor terminal equipment and first station monitor terminal equipment
Unanimously.
Due to implementing above-mentioned technical proposal, the application only needs the both ends by the fibre circuit for needing to monitor to be respectively connected to
First station channel end, second station channel end;The attenuation that this section of fibre circuit can be monitored changes or situation about interrupting occurs, and
Reflected in real time by webmaster end, find light path hidden danger can timely processing, reduce the unplanned interruption times of passage, improve reliable
Property.
Brief description of the drawings
The concrete structure of the application is provided by following drawings and examples:
Fig. 1 is the attachment structure schematic diagram of the application most preferred embodiment;
Fig. 2 is the structure diagram for monitoring convergence device;
Fig. 3 is the structure diagram of first station monitor terminal equipment.
Legend:1. convergence device is monitored, 101. master control borads, 102. webmaster plates, 103. Ethernet interfaces convergence plate,
104. coaxial interface converges plate, 2. webmaster ends, 3. convergence station Digital Distribution Frame, 4. convergence station optical transmission devices, 5. first station light
Transmission equipment, 6. first station Digital Distribution Frame, 7. first station monitor terminal equipment, 701. power supply changeover devices, 702. control boards,
703. test cells, 704. output coaxial interfaces, 705. output Ethernet interfaces, 706. input optical fibre interfaces, 8. first station passages
Terminal, 9. intermediate station optical transmission devices, 10. intermediate station Digital Distribution Frame, 11. intermediate station monitor terminal equipment, 12. second station light pass
Transfer device, 13. second station monitor terminal equipment, 14. second station channel ends, 15. first station intermediate station ODF, 16. intermediate station first station ODF,
17. intermediate station second station ODF, 18. second station intermediate station ODF.
Embodiment
The application can determine specifically from the limitation of following embodiments according to the technical solution of the application with actual conditions
Embodiment.
As shown in Figure 1, service operation condition monitoring system is matched somebody with somebody including monitoring convergence device 1, webmaster end 2, convergence station numeral
Coil holder 3, convergence station optical transmission device 4, first station optical transmission device 5, first station Digital Distribution Frame 6, first station monitor terminal equipment 7, first
Stand channel end 8, intermediate station optical transmission device 9, intermediate station Digital Distribution Frame 10, intermediate station monitor terminal equipment 11, second station light
Transmission equipment 12, second station monitor terminal equipment 13, second station channel end 14;The output terminal of monitoring convergence device 1 is connected by cable
Webmaster end 2 is connected to, the input terminal for monitoring convergence device 1 is connected to the output terminal of convergence station optical transmission device 4, monitoring by cable
The input terminal of convergence device 1 is also connected by coaxial cable with convergence station Digital Distribution Frame 3, and convergence station Digital Distribution Frame 3 passes through
Coaxial cable is connected with the output terminal of convergence station optical transmission device 4;The input terminal of convergence station optical transmission device 4 is distinguished by optical fiber
Output terminal, the output terminal of second station optical transmission device 12 of output terminal, intermediate station optical transmission device 9 with first station optical transmission device 5
It is connected;The input terminal of first station optical transmission device 5 is connected by coaxial cable with first station Digital Distribution Frame 6, first station Digital Distribution Frame 6
It is connected by coaxial cable with the output terminal of first station monitor terminal equipment 7, the input terminal of first station monitor terminal equipment 7 passes through optical fiber
It is connected to first station channel end 8;The input terminal of intermediate station optical transmission device 9 passes through coaxial cable and intermediate station Digital Distribution Frame 10
It is connected, intermediate station Digital Distribution Frame 10 is connected by coaxial cable with the output terminal of intermediate station monitor terminal equipment 11;Second station light
The input terminal of transmission equipment 12 is connected by cable with the output terminal of second station monitor terminal equipment 13, second station monitor terminal equipment 13
Input terminal second station channel end 14 is connected to by optical fiber.
Substation monitor terminal equipment is installed on substation optical fiber distributing by the application, is collected, detection signal transmission is converged to monitoring
Poly- equipment 1, then reflected in real time by webmaster end 2.The both ends by the fibre circuit for needing to monitor only are needed to be respectively connected to first station
Channel end 8, second station channel end 14;The attenuation that this section of fibre circuit can be monitored changes or situation about interrupting occurs, and
Reflected in real time by webmaster end 2, find light path hidden danger can timely processing, reduce the unplanned interruption times of passage, raising can
By property.
The application aggregate capabilities are strong, and plate 103 or coaxial can be converged according to business demand flexible configuration Ethernet interface
Interface converges plate 104;Interface has Ethernet interface and two kinds of interfaces of coaxial cable optional.One monitoring convergence device 1 can carry
Monitored in real time for multicore optical path states.
As shown in Figure 1, the input terminal of first station monitor terminal equipment 7 is also associated with first station intermediate station ODF15 by optical fiber;In
Between the stand input terminal of monitor terminal equipment 11 intermediate station first station ODF16, intermediate station second station ODF17 are connected to by optical fiber;
The input terminal of second station monitor terminal equipment 13 is also associated with second station intermediate station ODF18 by optical fiber.ODF is fibre distribution frame.
As shown in Fig. 2, monitoring convergence device 1 includes the master control borad 101 and master control borad 101 that can realize interconnection function
Be connected webmaster plate 102, the Ethernet interface that is connected with master control borad 101 converge plate 103, be connected with master control borad 101 it is coaxial
Interface converges plate 104;Webmaster plate 102 is connected by cable with webmaster end 2, and convergence station Digital Distribution Frame 3 passes through coaxial electrical
Cable is connected with coaxial interface convergence plate 104, and the output terminal of convergence station optical transmission device 4 is converged by cable and Ethernet interface
Plate 103 is connected.
Monitoring convergence device 1 coordinates webmaster plate 102 to realize using China's ring H9MO-LMXE+ equipment;Webmaster plate 102 is used
In monitoring and configuration to monitor terminal equipment and its second line of a couplet channel end;Can display monitoring terminal device power supply status, wind
Fan configuration and management, the state and performance monitoring of status monitoring, the working status of each block of plate and remote equipment.Coaxial interface
Convergence plate 104 or Ethernet interface convergence plate 103 can realize the convergence access of multiple monitor terminal equipment.
As shown in figure 3, first station monitor terminal equipment 7 includes power supply changeover device 701, control board 702, test cell
703rd, coaxial interface 704, output Ethernet interface 705, input optical fibre interface 706 are exported;Power supply changeover device 701 and control circuit
The power end of plate 702 is connected, and the output terminal of control board 702 is connected with the input terminal of test cell 703, test cell 703
Output terminal respectively with output coaxial interface 704, output Ethernet interface 705 be connected, the input terminal of control board 702 with it is defeated
Enter optical fiber interface 706 to be connected;Input optical fibre interface 706 is connected with first station intermediate station ODF15, first station channel end 8 respectively;Output
Coaxial interface 704 is connected with first station Digital Distribution Frame 6.Power supply changeover device 701 changes 220V alternating current input power supplyings to 9V direct currents
Power supply.Test cell 703 can test the optical fiber attenuation situation of corresponding connection, and operation principle is consistent with fibre optic identifier.
As shown in figure 3, intermediate station monitor terminal equipment 11, the structure of second station monitor terminal equipment 13 and first station monitor terminal
Equipment 7 is consistent.
Above technical characteristic constitutes the most preferred embodiment of the application, it is imitated with stronger adaptability and optimal implementation
Fruit, can increase and decrease inessential technical characteristic, to meet the needs of different situations according to being actually needed.
Claims (6)
1. a kind of service operation condition monitoring system, it is characterised in that match somebody with somebody including monitoring convergence device, webmaster end, convergence station numeral
Coil holder, convergence station optical transmission device, first station optical transmission device, first station Digital Distribution Frame, first station monitor terminal equipment, first station passage
Terminal, intermediate station optical transmission device, intermediate station Digital Distribution Frame, intermediate station monitor terminal equipment, second station optical transmission device, second station
Monitor terminal equipment, second station channel end;The output terminal for monitoring convergence device is connected to webmaster end by cable, and monitoring convergence is set
Standby input terminal is connected to the output terminal of convergence station optical transmission device by cable, monitors the input terminal of convergence device also by same
Shaft cable is connected with convergence station Digital Distribution Frame, and convergence station Digital Distribution Frame passes through coaxial cable and convergence station optical transmission device
Output terminal is connected;The input terminal of convergence station optical transmission device passes through the optical fiber output terminal with first station optical transmission device, centre respectively
The stand output terminal of optical transmission device, the output terminal of second station optical transmission device is connected;The input terminal of first station optical transmission device passes through same
Shaft cable is connected with first station Digital Distribution Frame, the output that first station Digital Distribution Frame passes through coaxial cable and first station monitor terminal equipment
End is connected, and the input terminal of first station monitor terminal equipment is connected to first station channel end by optical fiber;Intermediate station optical transmission device
Input terminal is connected by coaxial cable with intermediate station Digital Distribution Frame, and intermediate station Digital Distribution Frame passes through coaxial cable and intermediate station
The output terminal of monitor terminal equipment is connected;The input terminal of second station optical transmission device is defeated by cable and second station monitor terminal equipment
Outlet is connected, and the input terminal of second station monitor terminal equipment is connected to second station channel end by optical fiber.
2. service operation condition monitoring system according to claim 1, it is characterised in that:First station monitor terminal equipment it is defeated
Enter end and first station intermediate station ODF is also associated with by optical fiber;The input terminal of intermediate station monitor terminal equipment is connected respectively by optical fiber
There are intermediate station first station ODF, intermediate station second station ODF;The input terminal of second station monitor terminal equipment is also associated with second station by optical fiber
Between stand ODF.
3. service operation condition monitoring system according to claim 1 or 2, it is characterised in that:Monitoring convergence device includes
Can realize the master control borad of interconnection function, the webmaster plate that is connected with master control borad, be connected with master control borad Ethernet interface convergence
Plate, the coaxial interface being connected with master control borad convergence plate;Webmaster plate is connected by cable with webmaster end, and convergence station numeral is matched somebody with somebody
Coil holder converges plate with coaxial interface by coaxial cable and is connected, and the output terminal of convergence station optical transmission device passes through cable and ether
Network interface convergence plate is connected.
4. service operation condition monitoring system according to claim 1 or 2, it is characterised in that:First station monitor terminal equipment
Including power supply changeover device, control board, test cell, output coaxial interface, output Ethernet interface, input optical fibre interface;
Power supply changeover device is connected with the power end of control board, and the output terminal of control board is connected with the input terminal of test cell,
The output terminal of test cell respectively with output coaxial interface, output Ethernet interface be connected, the input terminal of control board with it is defeated
Enter optical fiber interface to be connected;Input optical fibre interface is connected with first station intermediate station ODF, first station channel end respectively;Export coaxial interface
It is connected with first station Digital Distribution Frame.
5. service operation condition monitoring system according to claim 3, it is characterised in that:First station monitor terminal equipment includes
Power supply changeover device, control board, test cell, output coaxial interface, output Ethernet interface, input optical fibre interface;Power supply
Converter is connected with the power end of control board, and the output terminal of control board is connected with the input terminal of test cell, test
The output terminal of unit is connected with output coaxial interface, output Ethernet interface respectively, the input terminal and input light of control board
Fine interface is connected;Input optical fibre interface is connected with first station intermediate station ODF, first station channel end respectively;Export coaxial interface and first
Digital Distribution Frame of standing is connected.
6. service operation condition monitoring system according to claim 4, it is characterised in that:Intermediate station monitor terminal equipment,
The structure of second station monitor terminal equipment is consistent with first station monitor terminal equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711304106.0A CN107947858B (en) | 2017-12-11 | 2017-12-11 | Service running state monitoring system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711304106.0A CN107947858B (en) | 2017-12-11 | 2017-12-11 | Service running state monitoring system |
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CN107947858A true CN107947858A (en) | 2018-04-20 |
CN107947858B CN107947858B (en) | 2023-12-12 |
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CN201711304106.0A Active CN107947858B (en) | 2017-12-11 | 2017-12-11 | Service running state monitoring system |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1960236A (en) * | 2006-02-22 | 2007-05-09 | 上海傲蓝通信技术有限公司 | Coaxial mixed full service access network system of bidirectional optical fiber |
US20080049631A1 (en) * | 2006-08-22 | 2008-02-28 | Morrill Robert J | System and method for monitoring interlayer devices and optimizing network performance |
CN101447828A (en) * | 2008-12-16 | 2009-06-03 | 北京华环电子股份有限公司 | Multi-service access SDH optical transmission device |
CN104333413A (en) * | 2014-11-06 | 2015-02-04 | 国家电网公司 | Optical cable online monitoring system |
CN105227230A (en) * | 2015-10-27 | 2016-01-06 | 成都芮捷科技发展有限责任公司 | A kind of electric power monitoring system based on Optical Distribution Network |
CN105306268A (en) * | 2015-10-27 | 2016-02-03 | 成都芮捷科技发展有限责任公司 | Monitoring method of electric power monitoring system based on optical distribution network |
CN207638662U (en) * | 2017-12-11 | 2018-07-20 | 国网新疆电力有限公司乌鲁木齐供电公司 | Service operation condition monitoring system |
-
2017
- 2017-12-11 CN CN201711304106.0A patent/CN107947858B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1960236A (en) * | 2006-02-22 | 2007-05-09 | 上海傲蓝通信技术有限公司 | Coaxial mixed full service access network system of bidirectional optical fiber |
US20080049631A1 (en) * | 2006-08-22 | 2008-02-28 | Morrill Robert J | System and method for monitoring interlayer devices and optimizing network performance |
CN101447828A (en) * | 2008-12-16 | 2009-06-03 | 北京华环电子股份有限公司 | Multi-service access SDH optical transmission device |
CN104333413A (en) * | 2014-11-06 | 2015-02-04 | 国家电网公司 | Optical cable online monitoring system |
CN105227230A (en) * | 2015-10-27 | 2016-01-06 | 成都芮捷科技发展有限责任公司 | A kind of electric power monitoring system based on Optical Distribution Network |
CN105306268A (en) * | 2015-10-27 | 2016-02-03 | 成都芮捷科技发展有限责任公司 | Monitoring method of electric power monitoring system based on optical distribution network |
CN207638662U (en) * | 2017-12-11 | 2018-07-20 | 国网新疆电力有限公司乌鲁木齐供电公司 | Service operation condition monitoring system |
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