CN205105217U - Passive optical network on -line monitoring device - Google Patents
Passive optical network on -line monitoring device Download PDFInfo
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- CN205105217U CN205105217U CN201520920343.XU CN201520920343U CN205105217U CN 205105217 U CN205105217 U CN 205105217U CN 201520920343 U CN201520920343 U CN 201520920343U CN 205105217 U CN205105217 U CN 205105217U
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- optical switch
- multiplexer
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- demodulation multiplexer
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- 230000003287 optical effect Effects 0.000 title claims abstract description 50
- 238000012806 monitoring device Methods 0.000 title abstract 2
- 238000000253 optical time-domain reflectometry Methods 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000011664 signaling Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a passive optical network on -line monitoring device, including OTDR tester (3), first photoswitch (4), first multiplexer (5), second photoswitch (6), a demultiplexer (8), the 2nd demultiplexer (7), controller (9), third photoswitch (10), the 3rd demultiplexer (11), fourth photoswitch (12), spectrometer (13) and a plurality of second multiplexer (14), reserve optic fibre can conveniently be adjusted to with data signal to test signal and coupling and the decoupling zero of data signal through above -mentioned on -off control, multiplexer and demultiplexer that OTDR tester (3) produced, has avoided the emergence of curve aliasing, the problem of dark fine test is solved, real on -line monitoring has been realized.
Description
Technical field
The utility model relates to a kind of network monitor device, and specifically a kind of EPON on-Line Monitor Device, belongs to technical field of network security.
Background technology
The advantages such as EPON is low with its cost, bandwidth is high, extensibility is strong, have started to be applied to more and more among the communication network of intelligent grid.Current stage, the application of EPON in intelligent grid mainly comprises distribution network automated management, user power utilization information gathering etc.Because EPON, in its running, some faults inevitably occurs, and wherein any one fault all can bring impact to plant running, so propose higher requirement to its reliability.In the maintenance process of EPON, the more difficult problem of quick position one is carried out to the fault on optical fiber link.So, set up one can to network carry out fault location, link monitoring, failure logging and alarm device just become highly significant.The traditional detection method of EPON tests at failed terminals by instrument.This method needs the connection of the interim disconnect user when detecting, and this not only adds the cost of maintenance, also can cause larger economic loss due to the interruption of transfer of data to user.
Summary of the invention
The purpose of this utility model is to provide a kind of EPON on-Line Monitor Device, and this device can on-line monitoring EPON working condition.
For achieving the above object, a kind of EPON on-Line Monitor Device of the utility model, is made up of local side parts and end fitting;
Local side parts comprise OTDR tester, the first optical switch, the first multiplexer and the second optical switch;
End fitting comprises the first demodulation multiplexer, the second multiple Xie Yongqi, controller, the 3rd optical switch, the 3rd demodulation multiplexer, the 4th optical switch, optical splitter and some second multiplexers;
The test signal that OTDR tester produces divides two-way after entering the first optical switch, one tunnel is coupled by the first multiplexer together with the downstream signal of optical-electrical converter with data-signal and OLT device, and another road signal that the first multiplexer coupling output and the first optical switch export enters two-way optical switch i.e. the second optical switch and exports, coupled output signal is walked working optical fibre and is entered the first demodulation multiplexer, do not have the signal through overcoupling to walk spare fibre and enter the second demodulation multiplexer, two paths of signals enters the 3rd demodulation multiplexer after the 3rd optical switch, 3rd demodulation multiplexer output signal point two-way, the test signal that data-signal produces with OTDR tester is separated, data-signal after separation enters each optical network unit by optical splitter through the second multiple multiplexer, carry out normal transfer of data, and test signal is after the 4th optical switch, each output is connected through the output that the second multiplexer is corresponding with optical splitter, thus be coupled with downlink data signal again, distribution transmits.
Controller controls the first demodulation multiplexer, the second multiple Xie Yongqi, controller, the 3rd optical switch, the 3rd demodulation multiplexer, the 4th optical switch respectively.
What adopt due to OTDR tester is the wavelength of 1650nm, can not produce disturb, so can be used for carrying out on-line monitoring descending (1490nm) and up (1330nm) signal of EPON.
It avoids the generation of curve aliasing by optical switch and control unit; And make OTDR can unrestricted choice link to be measured (comprising work at present link), solve the problem of dark fine test, achieve real on-line monitoring.
Further, OTDR tester is wavelengthtunable (1620-1660 Wavelength tunable) tester, can obtain higher measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of EPON on-Line Monitor Device, is made up of local side parts and end fitting;
Local side parts comprise OTDR tester 3, first optical switch 4, first multiplexer 5 and the second optical switch 6;
End fitting comprises the first demodulation multiplexer 8, second multiple solution device 7, controller 9, the 3rd optical switch 10, the 3rd demodulation multiplexer 11, the 4th optical switch 12, optical splitter 13 and some second multiplexers 14;
The test signal that OTDR tester 3 produces divides two-way after entering the first optical switch 4, one tunnel is coupled by the first multiplexer 5 together with the downstream signal of optical-electrical converter 1 with data-signal and OLT device 2, and another road signal that the first multiplexer 5 coupling output and the first optical switch 4 export enters two-way optical switch i.e. the second optical switch 6 and exports, coupled output signal is walked working optical fibre 17 and is entered the first demodulation multiplexer 8, do not have the signal through overcoupling to walk spare fibre 16 and enter the second demodulation multiplexer 7, two paths of signals enters the 3rd demodulation multiplexer 11 after the 3rd optical switch 10, 3rd demodulation multiplexer 11 outputs signal a point two-way, the test signal that data-signal produces with OTDR tester 3 is separated, data-signal after separation enters each optical network unit 15 by optical splitter 13 through the second multiple multiplexer 14, carry out normal transfer of data, and test signal is after the 4th optical switch 12, each output is connected through the output that the second multiplexer 14 is corresponding with optical splitter 13, thus be coupled with downlink data signal again, distribution transmits,
Controller 9 controls the first demodulation multiplexer 8, second multiple solution device 7, controller 9, the 3rd optical switch 10, the 3rd demodulation multiplexer 11, the 4th optical switch 12 respectively.
Further, described OTDR tester 3 is the adjustable tester of wavelengthtunable, and its wave-length coverage is 1620-1660, can obtain higher measuring accuracy.
Claims (2)
1. an EPON on-Line Monitor Device, is characterized in that, is made up of local side parts and end fitting;
Local side parts comprise OTDR tester (3), the first optical switch (4), the first multiplexer (5) and the second optical switch (6);
End fitting comprises the first demodulation multiplexer (8), the second multiple Xie Yongqi (7), controller (9), the 3rd optical switch (10), the 3rd demodulation multiplexer (11), the 4th optical switch (12), optical splitter (13) and some second multiplexers (14);
The test signal that OTDR tester (3) produces enters the first optical switch (4) and divides two-way afterwards, one tunnel is coupled by the first multiplexer (5) together with data-signal, and another road signal that the first multiplexer (5) coupling output and the first optical switch (4) export enters the second optical switch (6) and exports, coupled output signal is walked working optical fibre (17) and is entered the first demodulation multiplexer (8), do not have the signal through overcoupling to walk spare fibre (16) and enter the second demodulation multiplexer (7), two paths of signals enters the 3rd demodulation multiplexer (11) after the 3rd optical switch (10), 3rd demodulation multiplexer (11) output signal point two-way, the test signal that data-signal produces with OTDR tester (3) is separated, data-signal after separation enters each optical network unit (15) by optical splitter (13) through the second multiple multiplexer (14), carry out normal transfer of data, test signal is after the 4th optical switch (12), each output is connected through the output that the second multiplexer (14) is corresponding with optical splitter (13), be coupled with downlink data signal again, distribution transmits,
Controller (9) controls the first demodulation multiplexer (8), the second multiple Xie Yongqi (7), controller (9), the 3rd optical switch (10), the 3rd demodulation multiplexer (11), the 4th optical switch (12) respectively.
2. EPON on-Line Monitor Device according to claim 1, is characterized in that, described OTDR tester (3) is the adjustable tester of wavelengthtunable, and its wave-length coverage is 1620-1660.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520920343.XU CN205105217U (en) | 2015-11-17 | 2015-11-17 | Passive optical network on -line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520920343.XU CN205105217U (en) | 2015-11-17 | 2015-11-17 | Passive optical network on -line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205105217U true CN205105217U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520920343.XU Withdrawn - After Issue CN205105217U (en) | 2015-11-17 | 2015-11-17 | Passive optical network on -line monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205105217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356939A (en) * | 2015-11-17 | 2016-02-24 | 国网安徽省电力公司宿州供电公司 | On-line monitoring device of passive optical network |
-
2015
- 2015-11-17 CN CN201520920343.XU patent/CN205105217U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356939A (en) * | 2015-11-17 | 2016-02-24 | 国网安徽省电力公司宿州供电公司 | On-line monitoring device of passive optical network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160323 Effective date of abandoning: 20180629 |
|
| AV01 | Patent right actively abandoned |