CN101692623B - Method for utilizing test signal for delivering management information in optical fiber online protection system - Google Patents
Method for utilizing test signal for delivering management information in optical fiber online protection system Download PDFInfo
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- CN101692623B CN101692623B CN2009101143478A CN200910114347A CN101692623B CN 101692623 B CN101692623 B CN 101692623B CN 2009101143478 A CN2009101143478 A CN 2009101143478A CN 200910114347 A CN200910114347 A CN 200910114347A CN 101692623 B CN101692623 B CN 101692623B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 title claims abstract description 13
- 239000013307 optical fiber Substances 0.000 title claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 47
- 238000000253 optical time-domain reflectometry Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 239000000284 extract Substances 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 13
- 239000000835 fiber Substances 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention discloses a method for utilizing a test signal for transferring management information in an optical fiber online protection system, which is characterized in that an OTDR pulse generation module, a monitoring result data transmitting module and an output signal control module are arranged at a transmitting end, and the output signal control module controls the OTDR pulse generation module and the monitoring result data transmitting module and adopts the asynchronous transmission mode for realizing ordered work; and a data waveform extraction module and a monitoring data receiving module are arranged at a receiving end, the data waveform extraction module extracts non-OTDR waveform data on a circuit and sends to the monitoring data receiving module for processing, and the monitoring data receiving module analyzes the extracted data and carries out data processing on the data format of the transmitting end. The method has the advantages that the method can solve the disadvantage that an optical fiber online monitoring system needs to additionally occupy a communication signal channel for transmitting monitoring data. When the communication bandwidth is tense and a larger number of optical fibers need to be monitored, the advantages of the method are more prominent.
Description
Technical field
The present invention relates to a kind of method of management information transmission, particularly in optical fiber online protection system, utilize the method for test signal transmit management information.
Background technology
Along with the development of modern optical fiber communication industry, optical cable is widely used in communications.Though transmission system itself has network management, protection switch function, does not generally support the monitoring to optic fibre characteristic.When optical cable breaks down, can't confirm obstacle location and repair fast.Along with the development of communication network and the raising of complexity, not only to supervise transmission equipment, also to supervise optical cable.And the development of fiber cable network; The increase of network complexity; Requirement has higher levels of monitoring and management system, can be in time, the contingent abort situation of each optical cable segment of monitoring network exactly so as in time, establishment officer's repairing effectively; Reduce significantly and compress fault and last, become passive type and be maintained as active maintenance.This fiber-optic monitoring system can long-range, online, automatically monitor whole lightguide cable link, monitors the variation and the variation tendency of optic fibre characteristic in real time, reduces effectively and prevents Cable's Fault, accurately confirms the Cable's Fault position.It can monitor the state of optical cable with automatic on-line, and the discovery fault is in time alarmed, and the failure judgement place, reaches the compression fault and lasts, and alleviates the purpose of attendant's work load.As the new means of fiber optic cable maintenance, can guarantee the safe and highly efficient operation of lightguide cable link.Optical fiber on-line monitoring system based on OTDR is one of common method of fiber-optic monitoring system; When monitoring current optical fiber existing problems; Need pass to the opposite end to monitoring result and handle accordingly, this just needs the transmission that special communication port carries out the OTDR monitoring information.Take certain communication bandwidth, when monitored number of fibers more for a long time, this advantage is more obvious.
Summary of the invention
The present invention is exactly that the result who overcomes transmission OTDR monitoring optical fiber needs the extra shortcoming that takies communication channel, and discloses the method for utilizing the OTDR test signal for delivering management information in a kind of optical fiber online protection system.
The technical scheme that realizes the object of the invention is:
The present invention adopts information data and test signal is carried out time-multiplexed way, and per 8 OTDR pulse signals are data-signal at the back.The cycle of supposing the light pulse of an OTDR of transmission is T, and the time span of then sending data-signal is 2T, and wherein the time of previous T is sent valid data, and a back T does not send data, and not sending out data is for guaranteeing not influence the test effect of OTDR.The The data asynchronous transfer mode of data., after detecting 8 OTDR pulses, just begin to prepare to receive Monitoring Data at receiving terminal by asynchronous mode.
The concrete grammar step that the present invention transmits information is:
1, the waveform of design pulse signal: after adopting per 8 OTDR pulse signals, the back then is the waveform of Monitoring Data, is to keep low level at first, and Monitoring Data is divided valid data and invalid data;
2, at transmitting terminal OTDR pulse generation module, monitoring result data transmission blocks and output signal controlling module are set, output signal controlling module controls OTDR pulse generation module and monitoring result data transmission blocks adopt asynchronous transfer mode, in order work;
3, at receiving terminal data waveform extraction module and Monitoring Data receiver module are set; The data waveform extraction module extracts the Wave data of non-OTDR on the circuit; Delivering to the Monitoring Data receiver module handles; The Monitoring Data receiver module is analyzed the data that extract, carries out data processing by the data format of transmitting terminal, obtains management information.
Described output signal controlling module controls OTDR pulse generation module and monitoring result data transmission blocks; Adopt asynchronous transport method; Work is in order: send after 8 OTDR test pulses, then the data of transmitting supervisory result data sending module hocket like this.The cycle of supposing the light pulse of an OTDR of transmission is T, and the time span of then sending data-signal is 2T, and wherein the time of previous T is sent valid data, and a back T does not send data, and not sending out data is for guaranteeing not influence the test effect of OTDR.The The data asynchronous transfer mode of data., after detecting 8 OTDR pulses, just begin to prepare to receive Monitoring Data at receiving terminal by asynchronous mode.
Advantage of the present invention is: solved the ordinary optic fibre monitoring system and needed the extra shortcoming that takies communication channel for the transmission of monitoring data.When and number of fibers that need monitor nervous when communication bandwidth was many, advantage of the present invention was more outstanding.
Description of drawings
The OTDR impulse waveform sketch map that Fig. 1 adopts for the present invention;
Fig. 2 is the sending end structure block diagram;
Fig. 3 is the receiving terminal structured flowchart.
Embodiment
As shown in Figure 2, the present invention is made up of OTDR pulse generation module, monitoring result data transmission blocks and three modules of output signal controlling module in the transmitting terminal setting.OTDR pulse generation module is responsible for sending OTDR test light pulse signal; Output signal controlling module is responsible for carrying out framing to the monitoring result data according to the agreement of universal asynchronous serial communication and is sent; For guaranteeing that receiving terminal can accurately be distinguished out signal is OTDR test light pulse signal or the monitoring result data-signal that OTDR pulse generation module sends; The form of monitoring result Frame is: begin the OTDR light impulse length for twice, the back is only the data of carrying out framing by the agreement of general dystopy serial communication; The monitoring result data transmission blocks is responsible for sending 8 OTDR pulse signals to OTDR pulse generation module and the order of the signal of exporting the signal controlling module according to Fig. 1, then sends a monitoring result Frame, last invalid data frame, so circulation.
As shown in Figure 3, the present invention is made up of data waveform extraction module and two modules of Monitoring Data receiver module at receiving terminal.The data waveform extraction module is responsible for extracting the monitoring result Frame; Method is under the state of monitoring, signal to be judged; If pulse signal width greater than 2 times OTDR light pulse signal width then be judged as the monitoring result Frame, is delivered to the Monitoring Data receiver module and is carried out Data Receiving; The Monitoring Data receiver module is responsible for separating frame to the signal of data waveform extraction module output according to universal asynchronous serial communication protocol and is extracted the monitoring result data.
Claims (1)
1. utilize the method for test signal for delivering management information in the optical fiber online protection system; Comprise design pulse signal waveform and the OTDR pulse generation module that is provided with at transmitting terminal; It is characterized in that: also be provided with monitoring result data transmission blocks and output signal controlling module at transmitting terminal; Output signal controlling module controls OTDR pulse generation module and monitoring result data transmission blocks, the asynchronous transfer mode of employing light signal, work in order; At receiving terminal data waveform extraction module and Monitoring Data receiver module are set; The data waveform extraction module extracts the Wave data of non-OTDR on the circuit; Delivering to the Monitoring Data receiver module handles; The Monitoring Data receiver module is analyzed the data that extract, carries out data processing by the data format of transmitting terminal; The orderly work of the asynchronous transfer mode of described light signal is: send after 8 OTDR test pulses, then the data of transmitting supervisory result data sending module hocket like this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101143478A CN101692623B (en) | 2009-08-29 | 2009-08-29 | Method for utilizing test signal for delivering management information in optical fiber online protection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101143478A CN101692623B (en) | 2009-08-29 | 2009-08-29 | Method for utilizing test signal for delivering management information in optical fiber online protection system |
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| Publication Number | Publication Date |
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| CN101692623A CN101692623A (en) | 2010-04-07 |
| CN101692623B true CN101692623B (en) | 2012-05-30 |
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| CN2009101143478A Expired - Fee Related CN101692623B (en) | 2009-08-29 | 2009-08-29 | Method for utilizing test signal for delivering management information in optical fiber online protection system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0990937A1 (en) * | 1998-09-11 | 2000-04-05 | SEIKOH GIKEN Co., Ltd. | Optical fiber switch |
| CN1330265A (en) * | 2000-06-27 | 2002-01-09 | 华为技术有限公司 | Optical module for light-time domain reflectometer with wide dynamic range |
| CN1671091A (en) * | 2004-03-19 | 2005-09-21 | 华为技术有限公司 | Method and apparatus for transmitting monitoring information in WDM system |
| CN101079668A (en) * | 2007-07-05 | 2007-11-28 | 华为技术有限公司 | Device, method and device for positioning the optical fiber failure |
-
2009
- 2009-08-29 CN CN2009101143478A patent/CN101692623B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0990937A1 (en) * | 1998-09-11 | 2000-04-05 | SEIKOH GIKEN Co., Ltd. | Optical fiber switch |
| CN1330265A (en) * | 2000-06-27 | 2002-01-09 | 华为技术有限公司 | Optical module for light-time domain reflectometer with wide dynamic range |
| CN1671091A (en) * | 2004-03-19 | 2005-09-21 | 华为技术有限公司 | Method and apparatus for transmitting monitoring information in WDM system |
| CN101079668A (en) * | 2007-07-05 | 2007-11-28 | 华为技术有限公司 | Device, method and device for positioning the optical fiber failure |
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| CN101692623A (en) | 2010-04-07 |
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Inventor after: Qin Xiaoying Inventor after: Cai Shunzhi Inventor after: Chen Xu Inventor after: Cheng Dapeng Inventor before: Xiao Danyi Inventor before: Huang Fengling Inventor before: Liu Fuqi Inventor before: Zhou Xiaowei |
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Free format text: CORRECT: INVENTOR; FROM: XIAO DANYI HUANG FENGLING LIU FUQI ZHOU XIAOWEI TO: QIN XIAOYING CAI SHUNZHI CHEN XU CHENG DAPENG |
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Effective date of registration: 20141208 Address after: 541004 the Guangxi Zhuang Autonomous Region Guilin Qixing District, Liuhe Road, No. 98 Patentee after: GUILIN XINTONG TECHNOLOGY CO., LTD. Patentee after: INFORMATION COMMUNICATION COMPANY, STATE GRID NINGXIA ELECTRIC POWER CO., LTD. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin, Liuhe Road, No. 98 Patentee before: GUILIN XINTONG TECHNOLOGY CO., LTD. |
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