CN209930259U - Intelligent optical cable monitoring system with optical cable protection function - Google Patents
Intelligent optical cable monitoring system with optical cable protection function Download PDFInfo
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- CN209930259U CN209930259U CN201921072452.5U CN201921072452U CN209930259U CN 209930259 U CN209930259 U CN 209930259U CN 201921072452 U CN201921072452 U CN 201921072452U CN 209930259 U CN209930259 U CN 209930259U
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Abstract
The utility model discloses an intelligent optical cable monitoring system with optical cable protect function, include: the optical fiber monitoring system comprises a network management unit, a first optical switch, a second optical switch, a main optical cable, a standby optical cable, an OTDR module and a plurality of optical power monitoring units; two input ends of the first optical switch are respectively used for inputting business light pulse and test light pulse; two output ends of the first optical switch are respectively connected with the input ends of the main optical cable and the standby optical cable; the output ends of the main optical cable and the standby optical cable are respectively connected with two input ends of a second optical switch; two output ends of the second optical switch are respectively connected with a user side and a signal receiving end of the OTDR module; the plurality of optical power monitoring units are respectively used for monitoring the line loss of the main optical cable or the standby optical cable; the OTDR module is used for monitoring fault information of the main optical cable or the spare optical cable; the first optical switch is used for switching input optical pulses of the main optical cable and the spare optical cable, and the second optical switch is used for switching output paths of the main optical cable and the spare optical cable.
Description
Technical Field
The utility model belongs to the technical field of the optical fiber communication, specifically an intelligent optical cable monitoring system with optical cable protect function.
Background
With the development of optical fiber communication technology, the optical fiber communication network is continuously expanded, the maintenance problem of the optical fiber cable is urgent, and the implementation of real-time protection and monitoring of the optical cable line is very important.
The optical cable monitoring system realizes the automatic monitoring of an optical cable line by testing a backscattering curve of an optical fiber by using an Optical Time Domain Reflectometer (OTDR), and locates an optical fiber fault point; the system can realize real-time monitoring and maintenance of the optical cable, and the protection of the optical fiber circuit is mainly realized by an automatic switching protection technology of the optical fiber circuit at present; through simple bridging of the main and standby routes, when the main route is blocked, the main route is automatically switched to the standby route, thereby realizing the protection of the service of the in-use transmission system. At present, two systems belong to different manufacturers, have respective network management systems which are not communicated with each other, and bring inconvenience to optical cable monitoring and maintenance.
The existing optical cable protection and monitoring system generally installs OTDR and optical power monitoring equipment on both main and standby lines; when the service light is transmitted on the main optical cable, monitoring the power change of the service light on the main optical cable through optical power monitoring equipment on the main optical cable, and monitoring fault information on a spare optical cable line through OTDR on a spare optical cable; when the service light is transmitted on the standby optical cable, the power change of the service light on the standby optical cable is monitored through the optical power monitoring equipment on the standby optical cable, and the fault information on the main optical cable line is monitored through the OTDR on the main optical cable. Thus, two sets of OTDR systems are required, which increases the cost.
Disclosure of Invention
The utility model aims at the problem that prior art exists, provide an intelligent optical cable monitoring system with optical cable protect function, through the monitoring object who sets up two 2X 2 photoswitch switching service light pulse's transmission path and OTDR module, realized the protection and the monitoring of optical cable circuit.
In order to achieve the above object, the utility model adopts the following technical scheme:
an intelligent optical cable monitoring system with optical cable protection function, comprising: the optical fiber monitoring system comprises a network management unit, a first optical switch, a second optical switch, a main optical cable, a standby optical cable, an OTDR module and a plurality of optical power monitoring units; the first optical switch, the second optical switch, the OTDR module and the plurality of optical power monitoring units are respectively connected with the network management unit; two input ends of the first optical switch are respectively used for inputting business light pulse and test light pulse; two output ends of the first optical switch are respectively connected with the input ends of the main optical cable and the standby optical cable; the output ends of the main optical cable and the standby optical cable are respectively connected with two input ends of a second optical switch; two output ends of the second optical switch are respectively connected with a user side and a signal receiving end of the OTDR module; the plurality of optical power monitoring units are respectively used for monitoring the line loss of the main optical cable or the standby optical cable; the OTDR module is used for monitoring fault information of the main optical cable or the spare optical cable; the first optical switch is used for switching input optical pulses of the main optical cable and the spare optical cable, and the second optical switch is used for switching output paths of the main optical cable and the spare optical cable.
Specifically, the network management unit includes: a control circuit and a communication unit; the communication unit is used for receiving monitoring data of the OTDR module and monitoring data of the plurality of optical power monitoring units; the control circuit is used for controlling the first optical switch and the second optical switch according to the monitoring data of the plurality of optical power monitoring units; and the OTDR monitoring module is also used for determining the fault information of the monitored optical cable according to the monitoring data of the OTDR monitoring module.
Specifically, the plurality of optical power monitoring units include: the optical power monitoring system comprises a first optical power monitoring unit, a second optical power monitoring unit, a third optical power monitoring unit and a fourth optical power monitoring unit; the first optical power monitoring unit is arranged at the position where the main optical cable is coupled with the first optical switch; the second optical power monitoring unit is arranged at the position where the main optical cable is coupled with the second optical switch; the third optical power monitoring unit is arranged at the position where the standby optical cable is coupled with the first optical switch; the fourth optical power monitoring unit is arranged at the position where the spare optical cable is coupled with the second optical switch.
Further, the power difference value of the optical pulse on the main optical cable monitored by the second optical power monitoring unit and the first optical power monitoring unit is the line loss on the main optical cable; and the power difference value of the light pulse on the spare optical cable monitored by the fourth optical power monitoring unit and the third optical power monitoring unit is the line loss on the spare optical cable.
Specifically, the first optical switch and the second optical switch are both 2 × 2 optical switches.
Specifically, the OTDR module has a signal transmitting end and a signal receiving end, where the signal transmitting end is connected to an input end of the first optical switch, and the signal receiving end is connected to an output end of the second optical switch.
Specifically, the work flow of the intelligent optical cable monitoring system is as follows:
when the service light pulse is transmitted on the main optical cable, the OTDR module is connected on the spare optical cable; the service light pulse is coupled into the main optical cable through the first optical switch and transmitted to the user side through the second optical switch; the signal transmitting end of the OTDR module transmits a test optical pulse, and the test optical pulse is coupled into the standby optical cable through the first optical switch and transmitted to the signal receiving end of the OTDR module through the second optical switch; monitoring fault information of the standby optical cable through an OTDR module; monitoring the power loss of the service light pulse on the main optical cable through the first optical power monitoring unit and the second optical power monitoring unit, and if the power loss of the service light pulse on the main optical cable is larger than a preset value, indicating that a main optical cable line has a fault; controlling the first optical switch and the second optical switch to act through the network management unit, inputting service optical pulses into the standby optical cable, inputting test optical pulses into the main optical cable, connecting the user side with the output end of the standby optical cable, and connecting the signal receiving end of the OTDR module with the output end of the main optical cable; transmitting service light pulses through the standby optical cable, and monitoring fault information of the main optical cable through the OTDR module;
when the service light pulse is transmitted on the spare optical cable, the OTDR module is connected on the main optical cable; monitoring fault information of a main optical cable through an OTDR module; monitoring the power loss of the service light pulse on the standby optical cable through a third optical power monitoring unit and a fourth optical power monitoring unit, and if the power loss of the service light pulse on the standby optical cable is larger than a preset value, indicating that a standby optical cable line fails; controlling the first optical switch and the second optical switch to act through the network management unit, inputting service optical pulses into the main optical cable, inputting test optical pulses into the standby optical cable, connecting the user side with the output end of the main optical cable, and connecting the signal receiving end of the OTDR module with the output end of the standby optical cable; and transmitting service light pulse through the main optical cable, and monitoring fault information of the standby optical cable through the OTDR module.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a transmission line of first photoswitch switching business light pulse and test light pulse, when power monitoring unit monitors that the power loss of business light is greater than the default on main optical cable/reserve optical cable, switch the transmission path of business light through first photoswitch, protect the information of business light pulse transmission; meanwhile, the protection and monitoring synchronous operation of the optical cable line are realized through the monitoring object of the second optical switch OTDR module; just the utility model discloses do not need to set up the OTDR system respectively to main optical cable and reserve optical cable alone, do and realize the fault monitoring to main optical cable and reserve optical cable circuit, greatly saved the operation cost.
Drawings
Fig. 1 is a block diagram illustrating a structure of an intelligent optical cable monitoring system when service light is transmitted through a main optical cable in embodiment 1 of the present invention;
fig. 2 is a block diagram schematically illustrating a structure of an intelligent optical cable monitoring system when service light is transmitted over a spare optical cable line in embodiment 1 of the present invention;
fig. 3 is a schematic view of an operation flow of an intelligent optical cable monitoring system with an optical cable protection function in embodiment 2 of the present invention;
in the figure: 1. a network management unit; 2. a first optical switch; 3. a second optical switch; 4. a main optical cable; 5. a spare optical cable; 6. a traffic light emitter; 7. a signal transmitting terminal; 8. a user side; 9. a signal receiving end; 10. a first optical power monitoring unit; 11. A second optical power monitoring unit; 12. a third optical power monitoring unit; 13. and a fourth optical power monitoring unit.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, the present embodiment provides an intelligent optical cable monitoring system with an optical cable protection function, including: the optical fiber monitoring system comprises a network management unit 1, a first optical switch 2, a second optical switch 3, a main optical cable 4, a standby optical cable 5, an OTDR module and a plurality of optical power monitoring units; the first optical switch 2, the second optical switch 3, the OTDR module and the plurality of optical power monitoring units are respectively connected with the network management unit 1; two input ends of the first optical switch 2 are respectively used for inputting business light pulses and test light pulses; two output ends of the first optical switch 2 are respectively connected with the input ends of a main optical cable 4 and a standby optical cable 5; the output ends of the main optical cable 4 and the standby optical cable 5 are respectively connected with two input ends of the second optical switch 3; two output ends of the second optical switch 3 are respectively connected with a user end 8 and a signal receiving end 9 of the OTDR module; the optical power monitoring units are respectively used for monitoring the line loss of the main optical cable 4 or the spare optical cable 5; the OTDR module is used for monitoring fault information of the main optical cable 4 or the spare optical cable 5; the first optical switch 2 is used for switching input optical pulses of a main optical cable 4 and a spare optical cable 5, and the second optical switch 3 is used for switching output paths of the main optical cable 4 and the spare optical cable 5.
Specifically, the network management unit 1 includes: a control circuit and a communication unit; the communication unit is used for receiving monitoring data of the OTDR module and monitoring data of the plurality of optical power monitoring units; the control circuit is used for controlling the first optical switch 2 and the second optical switch 3 according to the monitoring data of the plurality of optical power monitoring units; and the OTDR monitoring module is also used for determining the fault information of the monitored optical cable according to the monitoring data of the OTDR monitoring module.
Specifically, the plurality of optical power monitoring units include: a first optical power monitoring unit 10, a second optical power monitoring unit 11, a third optical power monitoring unit 12 and a fourth optical power monitoring unit 13; the first optical power monitoring unit 10 is arranged at the position where the main optical cable 4 is coupled with the first optical switch 2; the second optical power monitoring unit 11 is arranged at the position where the main optical cable 4 is coupled with the second optical switch 3; the third optical power monitoring unit 12 is arranged at the position where the spare optical cable 5 is coupled with the first optical switch 2; the fourth optical power monitoring unit 13 is provided at a position where the spare optical cable 5 is coupled to the second optical switch 3.
Further, the power difference of the light pulse on the main optical cable 4, which is monitored by the second optical power monitoring unit 11 and the first optical power monitoring unit 10, is the line loss on the main optical cable 4; the power difference of the optical pulse on the optical cable 5 monitored by the fourth optical power monitoring unit 13 and the third optical power monitoring unit 12 is the line loss on the optical cable 5.
Specifically, the first optical switch 2 and the second optical switch 3 are both 2 × 2 optical switches, and the 2 × 2 optical switch has two input ports and two output ports, and is used for realizing optical path switching.
Specifically, the OTDR module has a signal transmitting end 7 and a signal receiving end 9, where the signal transmitting end 7 is connected to an input end of the first optical switch 2, and the signal receiving end 9 is connected to an output end of the second optical switch 3; the signal transmitting end 7 is a pulse laser and is used for transmitting test light pulses; the OTDR module is an optical time domain reflectometer for positioning optical fiber faults.
Example 2
As shown in fig. 3, the present embodiment provides an operation method of an intelligent optical cable monitoring system with an optical cable protection function, which specifically includes:
when the service light pulse is transmitted on the main optical cable 4 line, the OTDR module is connected on the spare optical cable 5 line; service light pulses emitted by a service light emitter 6 are coupled into a main optical cable 4 through a first optical switch 2 and transmitted to a user terminal 8 through a second optical switch 3; a signal transmitting end 7 of the OTDR module transmits a test optical pulse, the test optical pulse is coupled into a standby optical cable 5 through a first optical switch 2, and then is transmitted to a signal receiving end 9 of the OTDR module through a second optical switch 3; monitoring fault information of the spare optical cable 5 through an OTDR module; monitoring the power loss of the service light pulse on the main optical cable 4 through the first optical power monitoring unit 10 and the second optical power monitoring unit 11, and if the power loss of the service light pulse on the main optical cable 4 is larger than a preset value, indicating that a line of the main optical cable 4 has a fault; controlling the first optical switch 2 and the second optical switch 3 to act through the network management unit 1, inputting service optical pulses into the standby optical cable 5, inputting test optical pulses into the main optical cable 4, connecting the user side 8 with the output end of the standby optical cable 5, and connecting the signal receiving end 9 of the OTDR module with the output end of the main optical cable 4; transmitting service light pulse through a standby optical cable 5, and monitoring fault information of a main optical cable 4 through an OTDR module;
when the service light pulse is transmitted on the line of the standby optical cable 5, the OTDR module is connected on the line of the main optical cable 4; service light pulses emitted by a service light emitter 6 are coupled into a standby optical cable 5 through a first optical switch 2 and transmitted to a user terminal 8 through a second optical switch 3; a signal transmitting end 7 of the OTDR module transmits a test optical pulse, the test optical pulse is coupled into a main optical cable 4 through a first optical switch 2 and is transmitted to a signal receiving end 9 of the OTDR module through a second optical switch 3; monitoring fault information of the main optical cable 4 through an OTDR module; monitoring the power loss of the service light pulse on the spare optical cable 5 through the third optical power monitoring unit 12 and the fourth optical power monitoring unit 13, and if the power loss of the service light pulse on the spare optical cable 5 is larger than a preset value, indicating that a line of the spare optical cable 5 has a fault; controlling the first optical switch 2 and the second optical switch 3 to act through the network management unit 1, inputting service optical pulses into the main optical cable 4, inputting test optical pulses into the standby optical cable 5, connecting a user terminal 8 with the output end of the main optical cable 4, and connecting a signal receiving end 9 of the OTDR module with the output end of the standby optical cable 5; transmitting service light pulses through the main optical cable 4, and monitoring fault information of the standby optical cable 5 through an OTDR module; therefore, the continuous protection function of service optical transmission and the monitoring function of a fault optical cable line are achieved.
Specifically, the first optical power monitoring unit 10 monitors that the power of the optical pulse on the main optical cable 4 is P1, the second optical power monitoring unit 11 monitors that the power of the optical pulse on the main optical cable 4 is P2, the third optical power monitoring unit 12 monitors that the power of the optical pulse on the spare optical cable 5 is P3, and the fourth optical power monitoring unit 13 monitors that the power of the optical pulse on the spare optical cable 5 is P4; the preset value of power loss is P0; if P2-P1> P0 or P4-P3> P0, the network management unit 1 controls the first optical switch 2 and the second switch to operate, so as to switch the transmission paths of the service light and the test light.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An intelligent optical cable monitoring system with optical cable protection function, comprising: the optical fiber monitoring system comprises a network management unit, a first optical switch, a second optical switch, a main optical cable, a standby optical cable, an OTDR module and a plurality of optical power monitoring units; the first optical switch, the second optical switch, the OTDR module and the plurality of optical power monitoring units are respectively connected with the network management unit; two input ends of the first optical switch are respectively used for inputting business light pulse and test light pulse; two output ends of the first optical switch are respectively connected with the input ends of the main optical cable and the standby optical cable; the output ends of the main optical cable and the standby optical cable are respectively connected with two input ends of a second optical switch; two output ends of the second optical switch are respectively connected with a user side and a signal receiving end of the OTDR module; the plurality of optical power monitoring units are respectively used for monitoring the line loss of the main optical cable or the standby optical cable; the OTDR module is used for monitoring fault information of the main optical cable or the spare optical cable; the first optical switch is used for switching input optical pulses of the main optical cable and the spare optical cable, and the second optical switch is used for switching output paths of the main optical cable and the spare optical cable.
2. The system according to claim 1, wherein the network management unit comprises: a control circuit and a communication unit; the communication unit is used for receiving monitoring data of the OTDR module and monitoring data of the plurality of optical power monitoring units; the control circuit is used for controlling the first optical switch and the second optical switch according to the monitoring data of the plurality of optical power monitoring units; and the OTDR monitoring module is also used for determining the fault information of the monitored optical cable according to the monitoring data of the OTDR monitoring module.
3. A smart cable monitoring system with cable protection as claimed in claim 1, wherein the plurality of optical power monitoring units comprises: the optical power monitoring system comprises a first optical power monitoring unit, a second optical power monitoring unit, a third optical power monitoring unit and a fourth optical power monitoring unit; the first optical power monitoring unit is arranged at the position where the main optical cable is coupled with the first optical switch; the second optical power monitoring unit is arranged at the position where the main optical cable is coupled with the second optical switch; the third optical power monitoring unit is arranged at the position where the standby optical cable is coupled with the first optical switch; the fourth optical power monitoring unit is arranged at the position where the spare optical cable is coupled with the second optical switch.
4. The system according to claim 3, wherein the power difference of the optical pulses on the main optical cable monitored by the second optical power monitoring unit and the first optical power monitoring unit is a line loss on the main optical cable; and the power difference value of the light pulse on the spare optical cable monitored by the fourth optical power monitoring unit and the third optical power monitoring unit is the line loss on the spare optical cable.
5. The system of claim 1, wherein the first optical switch and the second optical switch are both 2 x 2 optical switches.
6. An intelligent optical cable monitoring system with optical cable protection function as claimed in claim 1, wherein said OTDR module has a signal transmitting end and a signal receiving end, said signal transmitting end is connected to the input end of the first optical switch, and said signal receiving end is connected to the output end of the second optical switch.
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| CN201921072452.5U CN209930259U (en) | 2019-07-10 | 2019-07-10 | Intelligent optical cable monitoring system with optical cable protection function |
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| CN201921072452.5U CN209930259U (en) | 2019-07-10 | 2019-07-10 | Intelligent optical cable monitoring system with optical cable protection function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247700A (en) * | 2019-07-10 | 2019-09-17 | 武汉孚晟科技有限公司 | A kind of intelligent optical cable monitoring system and method with cable protection function |
| CN111342891A (en) * | 2020-03-26 | 2020-06-26 | 武汉光迅信息技术有限公司 | Optical line switching method and device |
-
2019
- 2019-07-10 CN CN201921072452.5U patent/CN209930259U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247700A (en) * | 2019-07-10 | 2019-09-17 | 武汉孚晟科技有限公司 | A kind of intelligent optical cable monitoring system and method with cable protection function |
| CN111342891A (en) * | 2020-03-26 | 2020-06-26 | 武汉光迅信息技术有限公司 | Optical line switching method and device |
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