CN109039440A - A kind of efficient OTDR test macro and method - Google Patents
A kind of efficient OTDR test macro and method Download PDFInfo
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- CN109039440A CN109039440A CN201811074838.XA CN201811074838A CN109039440A CN 109039440 A CN109039440 A CN 109039440A CN 201811074838 A CN201811074838 A CN 201811074838A CN 109039440 A CN109039440 A CN 109039440A
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- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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Abstract
The invention discloses a kind of efficient OTDR test macros, including OTDR test cell array, prime array of photoswitch, rear class array of photoswitch, each OTDR test cell is connected with a prime photoswitch, and rear class array of photoswitch is connected by photoswitch cross-patching frame with rear class array of photoswitch, and OTDR test cell is connected to computer server, computer server is also connected with photoswitch drive control device, and computer server also passes through local area network and is connected with production management system；Rear class array of photoswitch is connected on fiber coupling hub, and it is connect by fiber coupling hub with multicore buffering transmission optical cable, multicore buffering transmission optical cable is connect with the coupling device in test station respectively by the fiber coupling hub of test lead, and control panel is additionally provided in test station.The present invention also provides a kind of efficient OTDR test methods.It is low that the present invention realizes that centralized management distributed measurement, maintenance require, and utilization rate of equipment and installations is high, and operating process is simple, and efficiency significantly improves.
Description
Technical field
The present invention relates to a kind of Optical Cable Measurement system and methods, and in particular to a kind of efficient OTDR test macro and side
Method belongs to optical fiber cable production test technical field.
Background technique
In optical fiber, optical cable production links, need repeatedly by OTDR equipment to the length of optical fiber cable, turn back to
The technical parameters such as damage, link load, attenuation coefficient and attenuation distribution carry out test measurement, and OTDR is optical fiber cable production test ring
Save essential critical equipment equipment.
Compared to Engineering instrument and meter, optical fiber cable production test is high with OTDR equipment precision prescribed, and stability is strong, repeats
Property and environmental suitability to get well, therefore existing equipment is based on bench device, and volume is big and more heavy；Due to optical fiber,
Optical cable production links in be required to using, and be related to multiple technical parameters test measurement, therefore optical fiber cable production survey
OTDR equipment on probation is typically distributed across plant area everywhere, different test program and test item is carry, by the survey in different posies
Try operator's management service.Further, since light cable manufactures huge number, production test task random fluctuation, each plant area,
The OTDR test equipment utilization rate of station is extremely unbalanced.
As shown in Fig. 1, in the prior art, optical fiber cable production test OTDR test macro, generally comprises computer
With OTDR test equipment, testing fiber under the operation of operator by coupling device couple after, into OTDR test equipment
It is tested, computer will pre-set program and related test parameters before testing, and after the completion of test, computer passes through local
Test result information is sent production management system by net.From attached drawing 2 as can be seen that the prior art is in test, in addition to test
Link OTDR equipment is handled except working condition, in other links, including fiber end face processing, fiber coupling, parameter setting journey
Links, the OTDR equipments such as sequence selection, the upload of test judgement data are in wait state, although this set of the prior art is full
The general flow of foot optical fiber cable production, but equipment vacancy rate is not only increased, equipment service efficiency is reduced, is also improved
Requirement and cost to corrective maintenance maintenance.
Summary of the invention
In order to overcome the defect of optical fiber cable production test OTDR system in the prior art, the present invention provides a kind of collection
The efficient OTDR test macro of middle management distribution measuring, to realize that equipment manages distributed measurement, maintenance requirement concentratedly
Low, utilization rate is high, and operating process is simple, the technical effect that measurement efficiency significantly improves.
The present invention is specifically achieved in that
A kind of efficient OTDR test macro, including the OTDR test cell array being made of multiple OTDR test cells, by
The prime array of photoswitch of multiple equipment photoswitch composition, the rear class array of photoswitch being made of multiple station photoswitches, each
OTDR test cell is connected with an equipment photoswitch, and prime array of photoswitch is opened by photoswitch cross-patching frame and rear class light
Array is closed to be connected, OTDR test cell is connected to computer server, and computer server is also connected with photoswitch drive control device,
Photoswitch drive control device is connect with prime array of photoswitch and rear class array of photoswitch respectively, and computer server also passes through office
Domain net is connected with production management system；Rear class array of photoswitch is also connected on fiber coupling hub, and passes through fiber coupling
Hub is connect with multicore buffering transmission optical cable, multicore buffering transmission optical cable by the fiber coupling hub of test lead respectively with
Coupling device in test station connects, and is additionally provided with control panel in test station, control panel is by the behaviour in test station
The instruction of work person's input control is controlled, and control panel passes through local network transport control instruction.
Further scheme is:
The OTDR test cell array is made of N number of OTDR test cell, and each OTDR test cell can be realized
OTDR Basic function testing process, N are typically greater than equal to 3 integer.
Further scheme is:
The prime array of photoswitch includes N number of 1*M photoswitch, and the common end of each photoswitch, which is realized, surveys N number of OTDR
The coupling of unit optical interface is tried, photoswitch branch, which realizes, couples the traversal of M station；
The rear class array of photoswitch includes M 1*N photoswitch, and the common end of each photoswitch is realized to M station
Optical fiber interface coupling is tested, photoswitch branch, which realizes, couples the traversal of N number of OTDR test cell.
Further scheme is:
The photoswitch cross-patching frame is for realizing the optical fiber coupling of prime array of photoswitch and rear class array of photoswitch
It closes, mating method is that the n-th channel of m-th of 1*N type photoswitch is coupled in the channel m of n-th of 1*M type photoswitch.
Further scheme is:
The computer server is for realizing the management of OTDR test cell array and the pipe of photoswitch drive control device
Reason is also used for the operation requests that corresponding operating person's control panel is issued by local area network and return data.
Further scheme is:
Photoswitch drive control device is used for the control instruction of response computer server, and control prime array of photoswitch is with after
Grade array of photoswitch closes the switch movement；
The core number of multicore buffering transmission optical fiber is M, provides fiber coupling between rear class array of photoswitch and test station
Optical transmission chain, one-to-one mating；
Coupling device is in order to realize and couple testing fiber optical cable with the optical link at transmission cable end, generally by operator
It manually completes；
Operator control panel is to issue operator's operational order to realize the human-computer interaction with operator, is received aobvious
This test result for showing the computer server feedback of local area network transmitting, generally with computer compounding practice software realization.
In the present invention, N represents OTDR test cell quantity, and M represents test workshop number of stations amount, and theoretically N, M can be all over
It goes through arbitrary value, considers photoswitch cost and utilization rate of equipment and installations, to constraint N≤32 of N in the present invention, to the constraint N < M of M
≤ 2N.
In the present invention, scheduling is uniformly controlled as central controller by computer server, realizes OTDR equipment
Centralized management distribution measuring is realized in unified management maintenance；Optimization is made for testing process simultaneously, by time division multiplexing mode,
Compression device free time, the one-to-one service of change equipment personnel to the current more multi-to-multi interactive services of equipment personnel.Optical fiber
Optical cable is carrying out the extension buffered optical fibers in OTDR testing process, develops into transmission buffer optical cable, and this point cannot be ignored,
And the present invention does not cover the key factor of other test measuring devices temporarily for OTDR equipment.In the prior art, such as
In conventional test methodologies shown in attached drawing 1, it is contemplated that OTDR equipment itself originates reflection peak blind zone problem, and (model is tested in blind area in vain
Enclose, up to rice up to a hundred), and coupling convenience (production line test heavy workload does not have to connector generally and couples, but V-groove,
Each secondary coupling requires cutting section again, and wire jumper length is brought to be lost), it can generally increase and decrease between equipment and fibre to be measured
The extension buffered optical fibers of 2km or so.And in the application, the extension buffered optical fibers that will there must be develop into transmission buffer optical cable.
It was the optical fiber of a disk 2km originally, and was that a longest up to the optical cable of 2km (is also possible to optic cable+part fiber shape now
Formula), this is just that equipment is concentrated, and distribution measuring brings possibility.
The present invention also provides a kind of efficient OTDR test methods, are directed to for computer server and come from each control plane
The different types of test request of plate, in conjunction with the OTDR test cell array idle condition managed, reasonably dispatched and
Optical link calculates, and provides the control driving instruction of two groups of array of photoswitch, realizes optical link switching；And parse transmitted test request
In OTDR test parameter, complete OTDR test result determine and data back.
Specifically, efficient OTDR test method of the invention, includes the following steps:
Step 1, receives operator control panel operational order, and formation operation request buffering enters OTDR test request team
Column；
Step 2, calculates the idle OTDR in OTDR test cell array in real time, and buffering enters free time OTDR test cell
Queue；
Step 3, it is successive according to two buffer queues, idle OTDR test cell is matched with test request optical fiber link；
Step 4 starts corresponding OTDR according to the test parameter that test request requires and measures；
Step 5, according to the test item that test request requires, called data library test criterion carries out test result
Determine；
Judgement result is returned to the control panel for proposing corresponding test request by step 6.
Further scheme is: computer server is directed to different test items and test product batch, formulates different
The priority of test port, the high test instruction of priority processing weight.
The invention discloses a kind of centralized management distribution measuring, maintenance requires low, utilization rate of equipment and installations height, operating process
Simply, the OTDR system and method that measurement efficiency significantly improves.Compared to general OTDR instrument or equipment, this system realizes OTDR
Equipment centralized management, distribution measuring had not only reduced the maintenance condition and production test station space requirement of OTDR equipment, but also
Improve utilization rate of equipment and installations and operator's efficiency.
Detailed description of the invention
Fig. 1 is that traditional optical fiber cable production test is formed with OTDR test macro.
Fig. 2 is that traditional optical fiber cable produces OTDR test links equipment state.
Fig. 3 is the efficient OTDR test system framework structural topology figure of one embodiment of the invention.
Fig. 4 is the efficient OTDR test method flow chart of one embodiment of the invention.
Fig. 5 is OTDR test cell structural schematic diagram in one embodiment of the invention.
Specific embodiment
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in Fig. 3, a kind of efficient OTDR test macro, including the OTDR test being made of multiple OTDR test cells
Cell array, the prime array of photoswitch being made of multiple equipment photoswitch are opened by the rear class light that multiple station photoswitches form
Array is closed, each OTDR test cell is connected with an equipment photoswitch, and prime array of photoswitch passes through photoswitch cross-patching
Frame is connected with rear class array of photoswitch, and OTDR test cell is connected to computer server, and computer server is also connected with light and opens
Drive control device is closed, photoswitch drive control device is connect with prime array of photoswitch and rear class array of photoswitch respectively, computer
Server also passes through local area network and is connected with production management system；Rear class array of photoswitch is also connected on fiber coupling hub,
And connect by fiber coupling hub with multicore buffering transmission optical cable, multicore buffering transmission optical cable passes through the optical fiber coupling of test lead
Intersection line device is connect with the coupling device in test station respectively, is additionally provided with control panel in test station, control panel by
Operator's input control instruction in test station controls, and control panel passes through local network transport control instruction.
Wherein, OTDR test cell array is made of N number of OTDR test cell, and each OTDR test cell can be realized
OTDR Basic function testing process, N are typically greater than equal to 3 integer；
Prime array of photoswitch includes N number of 1*M photoswitch, and the common end of each photoswitch, which is realized, tests list to N number of OTDR
First optical interface coupling, photoswitch branch, which realizes, couples the traversal of M station；
Rear class array of photoswitch includes M 1*N photoswitch, and the test to M station is realized in the common end of each photoswitch
Optical fiber interface coupling, photoswitch branch, which realizes, couples the traversal of N number of OTDR test cell；
The photoswitch cross-patching frame is for realizing the optical fiber coupling of prime array of photoswitch and rear class array of photoswitch
It closes, mating method is that the n-th channel of m-th of 1*N type photoswitch is coupled in the channel m of n-th of 1*M type photoswitch；
The computer server is for realizing the management of OTDR test cell array and the pipe of photoswitch drive control device
Reason is also used for the operation requests that corresponding operating person's control panel is issued by local area network and return data；
Photoswitch drive control device is used for the control instruction of response computer server, and control prime array of photoswitch is with after
Grade array of photoswitch closes the switch movement；
The core number of multicore buffering transmission optical fiber is M, provides fiber coupling between rear class array of photoswitch and test station
Optical transmission chain, one-to-one mating；
Coupling device is in order to realize and couple testing fiber optical cable with the optical link at transmission cable end, generally by operator
It manually completes；
Operator control panel is to issue operator's operational order to realize the human-computer interaction with operator, is received aobvious
This test result for showing the computer server feedback of local area network transmitting, generally with computer compounding practice software realization.
In the present invention, N represents OTDR test cell quantity, and M represents test workshop number of stations amount, and theoretically N, M can be all over
It goes through arbitrary value, considers photoswitch cost and utilization rate of equipment and installations, to constraint N≤32 of N in the present invention, to the constraint N < M of M
≤ 2N.
As the embodiment of an optimization of the invention, as shown in Fig. 5, OTDR test cell array of the invention is by more
A different wavelengths of light source module, detector module, data acquisition module and multichannel optical switch are constituted, in OTDR test cell base
Subdivision is realized on plinth again, computer server can be different by the direct operational administrative of multichannel optical switch according to testing requirement
Glistening light of waves light source module, detector module, data acquisition module complete the response of the test request instruction of different demands；
In the actual operation process, control panel can realize the length for including but being not limited only to optical fiber cable by pre-programmed
The technical parameters such as degree, insertion return loss, link load, attenuation coefficient and attenuation distribution test process of measurement, and operator only needs selection to survey
Send instructions under examination project；
According to different workshop situations and different production status, control panel can be realized by embedded board, tool
There are display screen output, operation button and touch screen instruction input, have access to local area network and realizes information with production management system
Interaction；Control panel can also be arranged in pairs or groups by embeded processor simply manipulates button and indicator light realization, local area network production
Management system interconnects, testing process parameter issues, the complicated logic etc. that manipulates is by the realization of processor pre-programmed, and operator is only
It need to complete the reading of simple push button operation signal；
As an embodiment of the present invention, coupling device is the automatic coupling system based on image or laser acquisition type
System, these coupling devices are all the routine techniques that this field can choose.
In the actual operation process, multicore buffering transmission optical cable can be a boundling, be also possible to multiple boundlings, and more
A boundling can test workshop throughout to different demands according to different demands, realize distribution measuring；
As an optimal enforcement example of the invention, multiple buffering transmission optical cables can be distributed on single test station
Port, and more set coupling devices are laid, the OTDR testing process that control panel can issue multiple buffering transmission optical cables port is asked
It asks, improves operator's efficiency；
As an embodiment of the present invention, prime array of photoswitch, rear class array of photoswitch and photoswitch distributing frame by
1*2 type photoswitch or other port number photoswitches composition, only need to meet each test cell can traverse each test station,
Each test station can also traverse each test cell, and photoswitch can be mechanically, be also possible to MEMS type light and open
It closes；
In the actual operation process, computer room or the data center for storing OTDR test cell array, keep constant temperature and humidity
Environment, and maintenance calibration periodically is carried out to each OTDR test cell, improve test cell stability and measuring accuracy.
Embodiment 2
As shown in Fig. 4, a kind of efficient OTDR test method of the present embodiment, includes the following steps:
Step 1, receives operator control panel operational order, and formation operation request buffering enters OTDR test request team
Column；
Step 2, calculates the idle OTDR in OTDR test cell array in real time, and buffering enters free time OTDR test cell
Queue；
Step 3, it is successive according to two buffer queues, idle OTDR test cell is matched with test request optical fiber link；
Step 4 starts corresponding OTDR according to the test parameter that test request requires and measures；
Step 5, according to the test item that test request requires, called data library test criterion carries out test result
Determine；
Judgement result is returned to the control panel for proposing corresponding test request by step 6；
As the embodiment of an optimization of the invention, computer server is for different test items and test product batch
It is secondary, formulate the priority of different test ports, the high test instruction of priority processing weight；
In the actual operation process, delaying for operator's OTDR test request queue and free time OTDR test cell queue
Scouring depth degree and saturation degree, provide analysis report in due course, convenient for increase and decrease OTDR test cell quantity on demand；
In test process, product information in test request comprising testing fiber, optical cable, in test process with production
Connection uploads test data and conclusion, forms product large database concept；
For the optical fiber cable of test failure, automatic input optical fiber cable production system simultaneously submits test details,
Convenient for later product reinspection, product screening and case study.
Claims (8)
1. a kind of efficient OTDR test macro, it is characterised in that including the OTDR test cell being made of multiple OTDR test cells
Array, the prime array of photoswitch prime array of photoswitch being made of multiple equipment photoswitch, is made of multiple station photoswitches
Rear class array of photoswitch, each OTDR test cell is connected with an equipment photoswitch, and prime array of photoswitch prime light is opened
It closes array to be connected by photoswitch cross-patching frame with rear class array of photoswitch, OTDR test cell and computer server connect
Logical, computer server is also connected with photoswitch drive control device, and photoswitch drive control device is respectively and before prime array of photoswitch
Grade array of photoswitch is connected with rear class array of photoswitch, and computer server also passes through local area network and is connected with production management system；
Rear class array of photoswitch is also connected on fiber coupling hub, and passes through fiber coupling hub and multicore buffering transmission optical cable
Connection, multicore buffering transmission optical cable are connected with the coupling device in test station respectively by the fiber coupling hub of test lead
It connects, control panel is additionally provided in test station, control panel is controlled by operator's input control instruction in test station
System, control panel is by local network transport control instruction, reception and shows test result.
2. efficient OTDR test macro according to claim 1, it is characterised in that:
The OTDR test cell array is made of N number of OTDR test cell, and each OTDR test cell can be realized OTDR base
This functional test process；
The prime array of photoswitch prime array of photoswitch includes N number of 1*M photoswitch, the common end realization pair of each photoswitch
N number of OTDR test cell optical interface coupling, photoswitch branch, which realizes, couples the traversal of M station；
The rear class array of photoswitch includes M 1*N photoswitch, and the test to M station is realized in the common end of each photoswitch
Optical fiber interface coupling, photoswitch branch, which realizes, couples the traversal of N number of OTDR test cell；
Wherein, N represents OTDR test cell quantity, and M represents test workshop number of stations amount, N≤32, N < M≤2N.
3. efficient OTDR test macro according to claim 2, it is characterised in that:
The photoswitch cross-patching frame is matched for realizing the fiber coupling of prime array of photoswitch and rear class array of photoswitch
The method of connecing is that the n-th channel of m-th of 1*N type photoswitch is coupled in the channel m of n-th of 1*M type photoswitch.
4. efficient OTDR test macro according to claim 1, it is characterised in that:
The computer server for realizing the management of OTDR test cell array and the management of photoswitch drive control device,
The operation requests and return data issued for corresponding operating person's control panel by local area network.
5. efficient OTDR test macro according to claim 4, it is characterised in that:
Photoswitch drive control device is used for the control instruction of response computer server, controls prime array of photoswitch and rear class light
Switch arrays close the switch movement.
6. efficient OTDR test macro according to claim 2, it is characterised in that:
The core number of multicore buffering transmission optical fiber is M, and the light for providing fiber coupling between rear class array of photoswitch and test station passes
Transmission link, one-to-one mating.
7. a kind of efficient OTDR test method, it is characterised in that include the following steps:
Step 1, receives operator control panel operational order, and formation operation request buffering enters the queue of OTDR test request；
Step 2, calculates the idle OTDR in OTDR test cell array in real time, and buffering enters free time OTDR test cell queue；
Step 3, it is successive according to two buffer queues, idle OTDR test cell is matched with test request optical fiber link；
Step 4 starts corresponding OTDR according to the test parameter that test request requires and measures；
Step 5, according to the test item that test request requires, called data library test criterion carries out test result and sentences
It is fixed；
Judgement result is returned to the control panel for proposing corresponding test request by step 6.
8. efficient OTDR test method according to claim 7, it is characterised in that: computer server is directed to different test items
Mesh and test product batch formulate the priority of different test ports, the high test instruction of priority processing weight.
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| WO2024023992A1 (en) * | 2022-07-27 | 2024-02-01 | 日本電信電話株式会社 | Optical transmission system and optical path setting/congestion control method |
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| CN109039440B (en) | 2021-11-23 |
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