CN2518262Y - Automatic monitor for optical cable - Google Patents
Automatic monitor for optical cable Download PDFInfo
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- CN2518262Y CN2518262Y CN02201132U CN02201132U CN2518262Y CN 2518262 Y CN2518262 Y CN 2518262Y CN 02201132 U CN02201132 U CN 02201132U CN 02201132 U CN02201132 U CN 02201132U CN 2518262 Y CN2518262 Y CN 2518262Y
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- mixer
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- monitoring
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Abstract
The utility model provides an optical fiber cable automatic monitoring device, which consists of an optical power acquisition module, an optical power control unit, an optical time domain launch tester, a WDM, an optical splitter, an optical filter, an industrial personal computer and an optical splitter / mixer. The optical splitter / mixers is connected respectively with the industrial personal computer, the optical time domain launch tester and the WDM. The communication optical power is collected by the optical splitter at the optical transceiver side and delivered to the IPC through the optical power acquisition module. The IPC selects tested fibers, starts the optical time domain launch tester to launch monitoring light that is different from the communication optical wavelength, and reuses the monitoring light to the transmission network through the WDM. The reflection of the monitoring light is received by the optical time domain launch tester and is analyzed and judged, and the cable fault is finally located. Adoption of the utility model can remarkably improve the cable-monitoring efficiency and the monitoring cost is low.
Description
Technical field:
The utility model relates to the optic cable automatic monitoring device in a kind of optic cable automatic monitoring system.
Background technology:
Along with the development of optical fiber communication technology, the expansion of fiber optic network scale, people also increase gradually to the requirement of the reliability of fiber optic network, make the system that is used for optic cable automatic monitoring arise at the historic moment.Include the optic cable automatic monitoring device in optic cable automatic monitoring system, this device is used for optical cable is monitored in real time, and the light signal that collects is delivered to the monitoring center of system, handles light signal is carried out centralized Analysis.
Existing optic cable automatic monitoring device as shown in Figure 1.It comprises luminous power collecting unit (AIU) 4, luminous power control unit (ACU) 5, light time territory transmission test instrument (OTDR) 3, optical switch case 2, wavelength division multiplexer (WDM) 1, optical splitter 6, light-filter (FILTER) 7.During this device busy, cooperate the No Light Alarm of optical transceiver, will receive Communication ray and regard monitoring light as.Light before receiving optical transceiver distributes on the frame (ODF), utilize optical splitter to get Communication ray power in 6 minutes, the communication luminous power that obtains is by luminous power control unit 4, the luminous power that branch is got is passed to monitoring center, dynamically to analyze data, when receiving the optical power change value, produce alarm above three grades of thresholdings of setting (1dB, 2dB, 5dB).Remote Test Unit among the figure (RTU) module is by the light time territory transmission test instrument 3 of industrial computer control and comprise that supporting optical devices such as optical switch case 2, luminous power collecting unit 4 and luminous power control unit 5 form, industrial computer is selected a tested optical fiber, is started the monitoring light that 3 emissions of light time territory transmission test instrument are different from the Communication ray wavelength according to alarm signal control optical switch case 2, by wavelength division multiplexer 1 monitoring recovery is used in the transmission network, monitoring reflection of light ripple is received and analysis and judgement by light time territory transmission test instrument 3, accurately locatees Cable's Fault.Because the cable network topological structure is intricate, it is many and lack that each transmission office has the optical fiber of many tree-like monitoring light paths and light path cross-over connection, if adopt existing apparatus that optical cable is monitored, the method that just needs to use the more optical switch element of port number even adopt the optical switch element cascade.Though the OTDR that this solution is used is less,, make that whole testing device and testing cost are higher because optical switch element itself costs an arm and a leg.
Summary of the invention:
The purpose of this utility model is to provide a kind of lower-cost optic cable automatic monitoring device.
For achieving the above object, the optic cable automatic monitoring device that the utility model provides, comprise the luminous power collecting unit, the luminous power control unit, light time territory transmission test instrument, wavelength division multiplexer, optical splitter, light-filter, industrial computer and light shunt/mixer, described light shunt/mixer and industrial computer, light time territory transmission test instrument and wavelength division multiplexer connect respectively, get Communication ray power in the optical transceiver side with the optical splitter branch, by the luminous power collecting unit, the luminous power that branch is got is delivered to industrial computer,, surpass three grades of thresholdings of setting when receiving the optical power change value dynamically to analyze data, be 1dB, 2dB, during 5dB, produce alarm, industrial computer is selected the multichannel tested optical fiber simultaneously by light shunt/mixer, start the monitoring light that light time territory transmission test instrument emission is different from the Communication ray wavelength, monitoring recovery is used in the transmission network by wavelength division multiplexer, multichannel monitoring reflection of light ripple is received and analysis and judgement by light time territory transmission test instrument, locatees Cable's Fault at last.
The standard tree-like 1XN light shunt/mixer of above-mentioned light shunt/mixer for forming by 1X2 shunt/mixer serial connection.
Compare with existing optic cable automatic monitoring device, the utility model has substituted expensive light path control switch element with common low-cost light shunt/mixer, because light path control switch element once can only be selected a tested light path, many the light path alarm need be tested one by one, use up shunt/mixer and make, can select many tested light paths simultaneously, the optic cable automatic monitoring device can be tested many alarm light paths simultaneously, the efficient of monitoring significantly improves, and the monitoring cost is also owing to the cheap of light shunt/mixer reduces.
Description of drawings:
Fig. 1 is existing optical cable automatic detection device schematic diagram;
Fig. 2 is an optical cable automatic detection device embodiment application drawing of the present utility model;
Fig. 3 is the 1X8 shunt/mixer internal structure schematic diagram that Fig. 2 adopts;
Fig. 4 is the resulting OTDR reference curve of reflected wave that OTDR receives 8 light paths;
The comparison diagram that obtains after resulting test curve when Fig. 5 is light path 3 appearance fractures and the reference curve of this test curve and Fig. 4 are made comparisons;
Fig. 6 is that little resulting test curve and comparison diagram of obtaining after making comparisons of the reference curve of this test curve and Fig. 4 when curved appears in light path 3.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing.
Essence of the present utility model be in the optical cable automatic detection device with normal optical shunt/mixer instead of optical grammed switch case so that optical cable is monitored in real time.
Fig. 2 is an optical cable automatic detection device embodiment application drawing of the present utility model.According to optic cable automatic monitoring device shown in Figure 2, it comprises luminous power collecting unit 14, luminous power control unit 15, light time territory transmission test instrument 13, wavelength division multiplexer 11, optical splitter 16, light-filter 17, industrial computer 18 and light shunt/mixer 12, described light shunt/mixer 12 is connected respectively with industrial computer 18, light time territory transmission test instrument 13 and wavelength division multiplexer 11.Optical transceiver 19 and monitored optical cable 20 have also been described among the figure.
The utility model is when work, got Communication ray power in optical transceiver 19 sides in 16 minutes with optical splitter, luminous power collecting unit 14 by 15 controls of luminous power control unit, the luminous power that branch is got is delivered to industrial computer 18, dynamically to analyze data, surpass and set three grades of thresholdings when receiving the optical power change value, promptly when 1dB, 2dB, 5dB, produce alarm.
Remote Test Unit among Fig. 2 (RTU) module is by the light time territory transmission test instrument 13 of industrial computer 18 control and comprise that supporting optical devices such as light shunt/mixer 12, luminous power collecting unit 14 and luminous power control unit 15 form.Industrial computer 18 is selected tested optical fiber, is started the monitoring light that 13 emissions of light time territory transmission test instrument are different from the Communication ray wavelength by light shunt/mixer 12, by wavelength division multiplexer 11 monitoring recovery is used in the transmission network, monitor the influence of light in receiving end with light-filter 17 filterings, to guarantee normally carrying out of communication to Communication ray.Monitoring reflection of light ripple is received and analysis and judgement by light time territory transmission test instrument 13, locatees Cable's Fault at last.
Above-mentioned light shunt/mixer 12 is the tree-like 1XN light of a standard shunt/mixer, and its elementary cell is a 1X2 shunt/mixer.1XN demultiplex/mixer is formed by (N-1) individual 1X2 splitter serial connection.The 1X8 splitter that adopts in this example is formed by 7 1X2 splitter serial connections, is divided into three grades.Internal structure as shown in Figure 3.
Describe OTDR in detail below in conjunction with accompanying drawing and how the reflected wave of many light paths receiving is carried out analysis and judgement, determine where breaking down of which bar light path, so that further specify essence of the present utility model.
Fig. 4 is the resulting OTDR reference curve of reflected wave that OTDR receives 8 light paths, and abscissa value is the corresponding light shunt/mixer of the decay at 2500 places.Though this curve is the synthetic of 8 light path reflected waves, but can judge every light path by each light path end reflection spike, during test test curve being compared with reference curve, is which bar light path breaks down but go out with regard to analysis and judgement by each reflection kurtosis position, light path end or big or small variation.
The comparison diagram that (the reference curve value subtracts corresponding test curve value) obtained after resulting test curve when Fig. 5 is light path 3 appearance fractures and the reference curve of this test curve and Fig. 4 were made comparisons, reach has taken place in the end reflection kurtosis of light path 3, illustrate that fracture has taken place optical fiber, abscissa value is that a reflection spike has appearred in 2670 places, and light shunt/mixer abscissa value is 2500, and can judge thus is that light path 3 at 170 meters of distance splitter fracture has taken place.
Fig. 6 is that little resulting test curve and the reference curve of this test curve and Fig. 4 comparison diagram that afterwards (reference curve value subtract test curve values) obtain of making comparisons when curved appears in light path 3, the end reflection peak location no change of light path 3, but variation has taken place in the size of kurtosis, it is little curved to illustrate that optical fiber has taken place, be the decay that 2670 places begin to occur light intensity in abscissa value simultaneously, and light shunt/mixer abscissa value is 2500, and can judge thus is that light path 3 has taken place at 170 meters of distance splitter by little bending.
From this example as can be seen, the utility model has substituted expensive light path control switch element with common low-cost light shunt/mixer, not only still can realize the automatic monitoring of optical cable and the accurate location of fault, make OTDR can realize simultaneously many light paths being tested, the reflected wave that receives many light paths carries out analysis and judgement, and of paramount importance be that cost significantly reduces and monitors efficient and significantly improves.
Claims (2)
1, a kind of optic cable automatic monitoring device, comprise luminous power collecting unit (14), luminous power control unit (15), light time territory transmission test instrument (13), wavelength division multiplexer (11), optical splitter (16), light-filter (17), industrial computer (18), it is characterized in that: also comprise light shunt/mixer (12), described light shunt/mixer (12) and industrial computer (18), light time territory transmission test instrument (13) and wavelength division multiplexer (11) connect respectively, get Communication ray power in the optical transceiver side with optical splitter (16) branch, by luminous power collecting unit (14), the luminous power that branch is got is delivered to industrial computer (18), dynamically to analyze data, surpass three grades of thresholdings of setting when receiving the optical power change value, be 1dB, 2dB, during 5dB, produce alarm, industrial computer (18) is selected the multichannel tested optical fiber simultaneously by light shunt/mixer (12), start the monitoring light that light time territory transmission test instrument (13) emission is different from the Communication ray wavelength, by wavelength division multiplexer (11) monitoring recovery is used in the transmission network, multichannel monitoring reflection of light ripple is received and analysis and judgement by light time territory transmission test instrument (13), locatees Cable's Fault at last.
2, optic cable automatic monitoring device according to claim 1 is characterized in that: the standard tree-like 1XN light shunt/mixer of described light shunt/mixer (12) for being formed by 1X2 shunt/mixer serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02201132U CN2518262Y (en) | 2002-01-18 | 2002-01-18 | Automatic monitor for optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02201132U CN2518262Y (en) | 2002-01-18 | 2002-01-18 | Automatic monitor for optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2518262Y true CN2518262Y (en) | 2002-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02201132U Expired - Fee Related CN2518262Y (en) | 2002-01-18 | 2002-01-18 | Automatic monitor for optical cable |
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| Country | Link |
|---|---|
| CN (1) | CN2518262Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018089B (en) * | 2006-02-10 | 2010-08-04 | 华为技术有限公司 | Optical fiber automatic monitoring system and method |
| CN101873154A (en) * | 2009-04-22 | 2010-10-27 | 雷凌科技股份有限公司 | Transmission power controller for Ethernet device and related method thereof |
| CN101567724B (en) * | 2009-05-23 | 2012-08-22 | 华为技术有限公司 | Network situation detection system and method |
| CN102880742A (en) * | 2012-08-17 | 2013-01-16 | 华北电力大学（保定） | Analysis method for judging mechanical failure of armored optic/electric composite cables through adopting optical fibers |
| CN103957051A (en) * | 2014-04-29 | 2014-07-30 | 国家电网公司 | Optical cable on-line monitoring device |
| CN104104432A (en) * | 2014-06-27 | 2014-10-15 | 绵阳灵通电讯设备有限公司 | Optical power monitoring device based on ZigBee technology and monitoring method thereof |
| CN105553547A (en) * | 2015-12-16 | 2016-05-04 | 国网福建省电力有限公司 | Monitoring system of standby optical power cable |
| CN109981379A (en) * | 2019-05-22 | 2019-07-05 | 太仓市同维电子有限公司 | A kind of network failure processing method based on home gateway |
-
2002
- 2002-01-18 CN CN02201132U patent/CN2518262Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018089B (en) * | 2006-02-10 | 2010-08-04 | 华为技术有限公司 | Optical fiber automatic monitoring system and method |
| CN101873154A (en) * | 2009-04-22 | 2010-10-27 | 雷凌科技股份有限公司 | Transmission power controller for Ethernet device and related method thereof |
| CN101567724B (en) * | 2009-05-23 | 2012-08-22 | 华为技术有限公司 | Network situation detection system and method |
| CN102880742A (en) * | 2012-08-17 | 2013-01-16 | 华北电力大学（保定） | Analysis method for judging mechanical failure of armored optic/electric composite cables through adopting optical fibers |
| CN102880742B (en) * | 2012-08-17 | 2014-11-19 | 华北电力大学（保定） | Analysis method for judging mechanical failure of armored optic/electric composite cables through adopting optical fibers |
| CN103957051A (en) * | 2014-04-29 | 2014-07-30 | 国家电网公司 | Optical cable on-line monitoring device |
| CN104104432A (en) * | 2014-06-27 | 2014-10-15 | 绵阳灵通电讯设备有限公司 | Optical power monitoring device based on ZigBee technology and monitoring method thereof |
| CN104104432B (en) * | 2014-06-27 | 2017-06-06 | 四川灵通电讯有限公司 | A kind of optical power monitoring device and monitoring method based on ZigBee technology |
| CN105553547A (en) * | 2015-12-16 | 2016-05-04 | 国网福建省电力有限公司 | Monitoring system of standby optical power cable |
| CN109981379A (en) * | 2019-05-22 | 2019-07-05 | 太仓市同维电子有限公司 | A kind of network failure processing method based on home gateway |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |