CN108462531A - Optical time domain reflectometer and its method, more pulsewidth optical cable diagnostic systems and its method - Google Patents
Optical time domain reflectometer and its method, more pulsewidth optical cable diagnostic systems and its method Download PDFInfo
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- CN108462531A CN108462531A CN201810279293.XA CN201810279293A CN108462531A CN 108462531 A CN108462531 A CN 108462531A CN 201810279293 A CN201810279293 A CN 201810279293A CN 108462531 A CN108462531 A CN 108462531A
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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]
Abstract
The present invention relates to fiber optic network fields, more particularly to a kind of optical time domain reflectometer and its method, more pulsewidth optical cable diagnostic systems and its method, the optical time domain reflectometer includes collecting test data module, for being instructed according to the test of reception, small pulsewidth and big pulsewidth test optical fiber link and collecting test data are used respectively, are respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；Small pulsewidth Drawing of Curve module is sent to optical fibre link circuit testing curve Fusion Module for the test data of reception to be depicted as small pulsewidth test curve；Big pulsewidth Drawing of Curve module is sent to optical fibre link circuit testing curve Fusion Module for the test data of reception to be depicted as big pulsewidth test curve；Optical fibre link circuit testing curve Fusion Module, for the test curve of reception to be fused into optical fibre link circuit testing curve.The present invention carries out testing and diagnosing using multiple pulsewidths to optical cable, has the advantages that diagnostic result is accurate, saves human resources.
Description
Technical field
The present invention relates to fiber optic network field more particularly to a kind of optical time domain reflectometers and its method, more pulsewidth optical cables to examine
Disconnected system and method.
Background technology
21 century, the rapid development of network, optical fiber, which becomes, communicates most common carrier, the monitoring of optical fiber link and safeguard at
For the groundwork of operator's O＆M.Optical time domain reflectometer is the common tool of O＆M department.Optical time domain reflectometer is to utilize
The photoelectricity one of backscattering caused by Rayleigh scattering and Fresnel reflection when light transmits in a fiber and manufactured precision
Body instrument, it is widely used among the maintenance of lightguide cable link, construction, can carry out fiber lengths, optical fiber transmission attenuation,
The measurement that connector is decayed with fault location etc..
The basic principle of optical time domain reflectometer is：It is surveyed using the method for rear orientation light or forward scattering light in analysis optical fiber
The structural loss caused by the fiber transmission attenuation and various faults of construction that reasons generate such as scattering, absorbing is measured, when optical fiber
When a little by temperature or stress, the scattering properties of the point will change, therefore by showing loss and fiber lengths
Correspondence detects the disturbance information that outer signals are distributed on sensor fibre.
Existing optical time domain reflectometer tests entire optical fiber link using single pulsewidth, when being tested using small pulsewidth, moves
State range is low, measuring distance is short；It is tested using big pulsewidth, there are blind areas greatly, cannot identify that small incident optical fiber is inherently asked
Topic；Using unidirectional test, the variation of distal end mishap point can not achieve.In addition, existing optical time domain reflectometer test curve does not have
Corresponding management system, the case where front and back deterioration of optical fiber link is cannot distinguish between in O＆M.Non-fiber link early warning scheme, leads to net
Network fault location and maintenance time are long.
Therefore, generally require to coordinate the professional of multiple departments when existing fiber link test, carry out joint debugging test and
File management works, and wastes a large amount of human resources.
Invention content
In view of the above problems, it is proposed that the present invention overcoming the above problem in order to provide one kind or solves at least partly
State optical time domain reflectometer and its method, the more pulsewidth optical cable diagnostic systems and its method of problem.
One aspect of the present invention provides a kind of optical time domain reflectometer, including：
Collecting test data module uses small pulsewidth and big pulsewidth test light respectively for being instructed according to the test of reception
Fine link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；
Small pulsewidth Drawing of Curve module is sent to light for the test data of reception to be depicted as small pulsewidth test curve
Fine link test curve Fusion Module；
Big pulsewidth Drawing of Curve module is sent to light for the test data of reception to be depicted as big pulsewidth test curve
Fine link test curve Fusion Module；
Optical fibre link circuit testing curve Fusion Module, for melting the small pulsewidth test curve of reception and big pulsewidth test curve
Synthetic fibre-optical link test curve.
The second aspect of the invention, provides a kind of optical time domain reflectometer, including at least two acquisition drafting modules and
Optical fibre link circuit testing curve Fusion Module, wherein
It includes collecting test data cell, small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve to acquire drafting module
Unit, wherein
Collecting test data cell uses small pulsewidth and big pulsewidth test light respectively for being instructed according to the test of reception
Fine link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve unit；
Small pulsewidth Drawing of Curve unit is sent to light for the test data of reception to be depicted as small pulsewidth test curve
Fine link test curve Fusion Module；
Big pulsewidth Drawing of Curve unit is sent to light for the test data of reception to be depicted as big pulsewidth test curve
Fine link test curve Fusion Module；
Optical fibre link circuit testing curve Fusion Module, for melting the small pulsewidth test curve of reception and big pulsewidth test curve
Synthetic fibre-optical link test curve.
The third aspect of the invention provides a kind of more pulsewidth optical cable diagnostic systems, including two such as first aspect institutes
The optical time domain reflectometer stated further includes optical fiber link condition curve fitting module and distal end, wherein
Optical time domain reflectometer is used to optical fibre link circuit testing curve being sent to optical fiber link condition curve fitting module；
Optical fiber link condition curve fitting module, the optical fibre link circuit testing curve matching for that will receive is at an optical fiber chain
Line state curve is sent to distal end；
Distally, it is sent to optical time domain reflectometer for editing test command, the optical fiber link condition curve of reception is carried out
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparing knot
Fruit is different, then is sent to terminal according to comparison result editor's failure diagnosis information.
Further, two optical time domain reflectometers are separately mounted to the both ends of tested optical fiber link.
The fourth aspect of the invention provides a kind of more pulsewidth optical cable diagnostic systems, includes as described in second aspect
Optical time domain reflectometer further includes optical fiber link condition curve fitting module and distal end, wherein
Optical time domain reflectometer, for optical fibre link circuit testing curve to be sent to optical fiber link condition curve fitting module；
Optical fiber link condition curve fitting module, the optical fibre link circuit testing curve matching for that will receive is at an optical fiber chain
Line state curve is sent to distal end；
Distally, it is sent to optical time domain reflectometer for editing test command, the optical fiber link condition curve of reception is carried out
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparing knot
Fruit is different, then is sent to terminal according to comparison result editor's failure diagnosis information.
Further, acquisition drafting module is separately mounted to the both ends of tested optical fiber link.
The fifth aspect of the invention provides a kind of application method of optical time domain reflectometer as described in relation to the first aspect,
Include the following steps：
It is instructed according to the test of reception using collecting test data module, small pulsewidth and big pulsewidth is used to test optical fiber respectively
Link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；
The test data of reception is depicted as small pulsewidth test curve using small pulsewidth Drawing of Curve module, is sent to optical fiber
Link test curve Fusion Module；
The test data of reception is depicted as big pulsewidth test curve using big pulsewidth Drawing of Curve module, is sent to optical fiber
Link test curve Fusion Module；
The small pulsewidth test curve of reception and big pulsewidth test curve are melted using optical fibre link circuit testing curve Fusion Module
Synthetic fibre-optical link test curve.
The sixth aspect of the invention provides a kind of application method of the optical time domain reflectometer as described in second aspect, packet
Include following steps：
It is instructed according to the test of reception using collecting test data cell, small pulsewidth and big pulsewidth is used to test optical fiber respectively
Link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve unit；
The test data of reception is depicted as small pulsewidth test curve using small pulsewidth Drawing of Curve unit, is sent to optical fiber
Link test curve Fusion Module；
The test data of reception is depicted as big pulsewidth test curve using big pulsewidth Drawing of Curve unit, is sent to optical fiber
Link test curve Fusion Module；
The small pulsewidth test curve of reception and big pulsewidth test curve are melted using optical fibre link circuit testing curve Fusion Module
Synthetic fibre-optical link test curve.
The seventh aspect of the invention provides a kind of examining for more pulsewidth optical cable diagnostic systems based on described in the third aspect
Disconnected method, includes the following steps：
Optical fibre link circuit testing curve is sent to optical fiber link condition curve fitting module using optical time domain reflectometer；
Using optical fiber link condition curve fitting module by the optical fibre link circuit testing curve matching of reception at an optical fiber chain
Line state curve is sent to distal end；
It is sent to optical time domain reflectometer using distal end editor's test command, the optical fiber link condition curve of reception is deposited
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparison result
Difference is then sent to terminal according to comparison result editor's failure diagnosis information.
The eighth aspect of the invention provides a kind of examining for more pulsewidth optical cable diagnostic systems based on described in fourth aspect
Disconnected method, includes the following steps：
Optical fibre link circuit testing curve is sent to optical fiber link condition curve fitting module using optical time domain reflectometer；
Using optical fiber link condition curve fitting module by the optical fibre link circuit testing curve matching of reception at an optical fiber chain
Line state curve is sent to distal end；
It is sent to optical time domain reflectometer using distal end editor's test command, the optical fiber link condition curve of reception is deposited
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparison result
Difference is then sent to terminal according to comparison result editor's failure diagnosis information.
Optical time domain reflectometer provided by the invention and its method, more pulsewidth optical cable diagnostic systems and its method, with existing skill
Art, which is compared, has following progress：
(1) optical fiber link is tested using the combination of multiple pulsewidths, may be implemented to be diagnosed to be mishap point and long range
Purpose, compensate for the problem that dynamic range is insufficient or blind area is excessive.
(2) it uses two optical time domain reflectometers to execute two-way test, is finally fitted a complete optical fiber link curve, it can
To improve the ability of the mishap of identification long-distance optical fiber link, the mishap point that cannot be diagnosed to be optical fiber link distal end is avoided
Problem.
(3) the optical fiber link data of O＆M are further analyzed using distal end, are achieved, comparison alleviates O＆M people
Member's workload can distally send failure diagnosis information to operation maintenance personnel, realize early warning in time when optical fiber link breaks down
Function.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific implementation mode for lifting the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is that the device of optical time domain reflectometer in the embodiment of the present invention one connects block diagram；
Fig. 2 is that the device of optical time domain reflectometer in the embodiment of the present invention two connects block diagram；
Fig. 3 is that the device of more pulsewidth optical cable diagnostic systems in the embodiment of the present invention three connects block diagram；
Fig. 4 is that the device of more pulsewidth optical cable diagnostic systems in the embodiment of the present invention four connects block diagram；
The step of Fig. 5 is optical time domain reflectometer application method in the embodiment of the present invention five is schemed；
The step of Fig. 6 is optical time domain reflectometer application method in the embodiment of the present invention six is schemed；
The step of Fig. 7 is more pulsewidth optical cable diagnostic methods in the embodiment of the present invention seven and embodiment eight is schemed；
Fig. 8 is the work flow diagram of the embodiment of the present invention nine；
Fig. 9 is the optic communication links figure before being tested in embodiment nine；
Figure 10 is the test result of optical time domain reflectometer A in embodiment nine；
Figure 11 is the test result of optical time domain reflectometer B in embodiment nine；
Figure 12 is the optical fiber link datagram after optical time domain reflectometer A and B data are fitted in embodiment nine.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology), there is meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless by specific definitions, otherwise will not be explained with the meaning of idealization or too formal.
An embodiment of the present invention provides a kind of optical time domain reflectometer and its method, more pulsewidth optical cable diagnostic systems and its sides
Method.
Embodiment one
Referring to Fig.1, a kind of optical time domain reflectometer is present embodiments provided, including：
Collecting test data module uses small pulsewidth and big pulsewidth test light respectively for being instructed according to the test of reception
Fine link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；
Small pulsewidth Drawing of Curve module is sent to light for the test data of reception to be depicted as small pulsewidth test curve
Fine link test curve Fusion Module；
Big pulsewidth Drawing of Curve module is sent to light for the test data of reception to be depicted as big pulsewidth test curve
Fine link test curve Fusion Module；
Optical fibre link circuit testing curve Fusion Module, for melting the small pulsewidth test curve of reception and big pulsewidth test curve
Synthetic fibre-optical link test curve.
The optical time domain reflectometer of the present embodiment tests optical cable using the combination of multiple pulsewidths, and test may be implemented and examine
Break and the purpose of mishap point and long range, compensates for the problem that dynamic range is insufficient or blind area is excessive.
Embodiment two
Such as Fig. 2, embodiment two provides a kind of optical time domain reflectometer, including at least two acquisition drafting modules and optical fiber chain
Road test curve Fusion Module, wherein
It includes collecting test data cell, small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve to acquire drafting module
Unit, wherein
Collecting test data cell uses small pulsewidth and big pulsewidth test light respectively for being instructed according to the test of reception
Fine link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve unit；
Small pulsewidth Drawing of Curve unit is sent to light for the test data of reception to be depicted as small pulsewidth test curve
Fine link test curve Fusion Module；
Big pulsewidth Drawing of Curve unit is sent to light for the test data of reception to be depicted as big pulsewidth test curve
Fine link test curve Fusion Module；
Optical fibre link circuit testing curve Fusion Module, for melting the small pulsewidth test curve of reception and big pulsewidth test curve
Synthetic fibre-optical link test curve.
The optical time domain reflectometer of the present embodiment, including at least two acquisition drafting modules, can be by acquisition drafting module spirit
The both ends for being mounted on tested optical fiber link living, it is cost-effective, flexibly and easily.
Embodiment three
Such as Fig. 3, when embodiment three provides the light in a kind of more pulsewidth optical cable diagnostic systems, including two such as embodiments one
Domain reflectometer further includes optical fiber link condition curve fitting module and distal end, wherein
Optical time domain reflectometer is used to optical fibre link circuit testing curve being sent to optical fiber link condition curve fitting module；
Optical fiber link condition curve fitting module, the optical fibre link circuit testing curve matching for that will receive is at an optical fiber chain
Line state curve is sent to distal end；
Distally, it is sent to optical time domain reflectometer for editing test command, the optical fiber link condition curve of reception is carried out
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparing knot
Fruit is identical, then stores the optical fiber link condition curve of reception, if comparison result is different, according to comparison result editor event
Barrier diagnostic message is sent to terminal.
In the present embodiment, two optical time domain reflectometers are separately mounted to the both ends of tested optical fiber link.
More pulse width sets closing light cable diagnostic systems of the present embodiment, have used the optical time domain reflectometer in two embodiments one,
Two-way test is executed, a complete optical fiber link curve is finally fitted, the minor matter of identification long-distance optical fiber link can be improved
The ability of part avoids the mishap point problem that cannot test out optical fiber link distal end.
Include distally test instruction editor sending module, curve comparison module, failure diagnosis information editor in the present embodiment
Sending module and optical fiber link condition curve database, wherein
Test instruction editor's sending module is sent to collecting test data module for editing test instruction；
Curve comparison module, for the optical fiber link condition curve that will receive and from optical fiber link condition curve database
The calibration curve information transferred is compared, if comparison result is identical, the optical fiber link condition curve of reception is stored, if than
Compared with result difference, then comparison result is sent to failure diagnosis information editor's sending module；
Failure diagnosis information editor's sending module, for according to comparison result editor's failure diagnosis information, being sent to terminal；
Optical fiber link condition curve database is used for storing fiber optic link state calibration curve information.
Wherein, collecting test data module respectively with test instruct editor sending module, small pulsewidth Drawing of Curve module and
Big pulsewidth Drawing of Curve module electrical connection, optical fibre link circuit testing curve Fusion Module respectively with small pulsewidth Drawing of Curve module, big
Pulsewidth Drawing of Curve module and optical fiber link condition curve fitting module electrical connection, curve comparison module respectively with optical fiber link shape
State curve fitting module, optical fiber link condition curve database and the electrical connection of failure diagnosis information editor's sending module, optical fiber chain
Line state curve fitting module is electrically connected with optical fiber link condition curve database, failure diagnosis information editor sending module and end
End electrical connection.This connection relation is suitable for other embodiment, repeats no more.
In the present embodiment, failure diagnosis information is wirelessly transmitted to terminal by failure diagnosis information editor's sending module.It realizes
The function of early warning, operation maintenance personnel find that the failure diagnosis information in optical cable is safeguarded in time.When it is implemented, fault diagnosis is believed
Breath sending module can use the mode of 4G/3G/WI F I that failure diagnosis information is wirelessly transmitted to terminal, and mode is simpler
Single, common, cost is simple, easy to maintain.
Example IV
Such as Fig. 4, example IV provides a kind of more pulsewidth optical cable diagnostic systems, includes the optical time domain as described in embodiment two
Reflectometer further includes optical fiber link condition curve fitting module and distal end, wherein
Optical time domain reflectometer, for optical fibre link circuit testing curve to be sent to optical fiber link condition curve fitting module；
Optical fiber link condition curve fitting module, the optical fibre link circuit testing curve matching for that will receive is at an optical fiber chain
Line state curve is sent to distal end；
Distally, it is sent to optical time domain reflectometer for editing test command, the optical fiber link condition curve of reception is carried out
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparing knot
Fruit is different, then is sent to terminal according to comparison result editor's failure diagnosis information.
Include distally test instruction editor sending module, curve comparison module, failure diagnosis information editor in the present embodiment
Sending module and optical fiber link condition curve database, wherein
Test instruction editor's sending module is sent to collecting test data module for editing test instruction；
Curve comparison module, for the optical fiber link condition curve that will receive and from optical fiber link condition curve database
The calibration curve information transferred is compared, if comparison result is identical, the optical fiber link condition curve of reception is stored, if than
Compared with result difference, then comparison result is sent to failure diagnosis information editor's sending module；
Failure diagnosis information editor's sending module, for according to comparison result editor's failure diagnosis information, being sent to terminal；
Optical fiber link condition curve database is used for storing fiber optic link state calibration curve information.
Wherein, collecting test data cell respectively with test instruct editor sending module, small pulsewidth Drawing of Curve unit and
Big pulsewidth Drawing of Curve unit electrical connection, optical fibre link circuit testing curve Fusion Module respectively with small pulsewidth Drawing of Curve module, big
Pulsewidth Drawing of Curve module and optical fiber link condition curve fitting module electrical connection, curve comparison module respectively with optical fiber link shape
State curve fitting module, optical fiber link condition curve database and the electrical connection of failure diagnosis information editor's sending module, optical fiber chain
Line state curve fitting module is electrically connected with optical fiber link condition curve database, failure diagnosis information editor sending module and end
End electrical connection.This connection relation is suitable for other embodiment, repeats no more.
In the present embodiment, acquisition drafting module is separately mounted to the both ends of tested optical fiber link.
The present embodiment is shared an optical fiber link and is surveyed using the optical time domain reflectometer described in embodiment two, acquisition drafting module
Curve Fusion Module is tried, is economized on resources, it is reasonable for structure, it is more flexible and convenient when to optical fiber link progress diagnostic test.
Embodiment five
Such as Fig. 5, embodiment five provides a kind of application method of the optical time domain reflectometer as described in embodiment one, including with
Lower step：
It is instructed according to the test of reception using collecting test data module, small pulsewidth and big pulsewidth is used to test optical fiber respectively
Link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；
The test data of reception is depicted as small pulsewidth test curve using small pulsewidth Drawing of Curve module, is sent to optical fiber
Link test curve Fusion Module；
The test data of reception is depicted as big pulsewidth test curve using big pulsewidth Drawing of Curve module, is sent to optical fiber
Link test curve Fusion Module；
The small pulsewidth test curve of reception and big pulsewidth test curve are melted using optical fibre link circuit testing curve Fusion Module
Synthetic fibre-optical link test curve.
The application method of the optical time domain reflectometer of the present embodiment, it is easy to operate, it is combined to optical fiber link using multiple pulsewidths
It is tested, is finally fitted a complete optical fibre link circuit testing curve, may be implemented to be diagnosed to be mishap point and long range
Purpose compensates for the problem that dynamic range is insufficient or blind area is excessive.
Embodiment six
Such as Fig. 6, embodiment six provides a kind of application method of the optical time domain reflectometer as described in embodiment two, including following
Step：
It is instructed according to the test of reception using collecting test data cell, small pulsewidth and big pulsewidth is used to test optical fiber respectively
Link and collecting test data, are respectively sent to small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve unit；
The test data of reception is depicted as small pulsewidth test curve using small pulsewidth Drawing of Curve unit, is sent to optical fiber
Link test curve Fusion Module；
The test data of reception is depicted as big pulsewidth test curve using big pulsewidth Drawing of Curve unit, is sent to optical fiber
Link test curve Fusion Module；
The small pulsewidth test curve of reception and big pulsewidth test curve are melted using optical fibre link circuit testing curve Fusion Module
Synthetic fibre-optical link test curve.
The application method of the optical time domain reflectometer of the present embodiment, multiple collecting test data cells share an optical fiber link
Test curve Fusion Module, economizes on resources and cost, and easy to operate, is surveyed to optical fiber link using the combination of multiple pulsewidths
Examination is finally fitted a complete optical fibre link circuit testing curve, the purpose for being diagnosed to be mishap point and long range may be implemented, more
The problem that dynamic range is insufficient or blind area is excessive is mended.
Embodiment seven
Such as Fig. 7, embodiment seven provides a kind of diagnosis side based on more pulsewidth optical cable diagnostic systems described in embodiment three
Method includes the following steps：
Optical fibre link circuit testing curve is sent to optical fiber link condition curve fitting module using optical time domain reflectometer；
Using optical fiber link condition curve fitting module by the optical fibre link circuit testing curve matching of reception at an optical fiber chain
Line state curve is sent to distal end；
It is sent to optical time domain reflectometer using distal end editor's test command, the optical fiber link condition curve of reception is deposited
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparison result
It is identical, then the optical fiber link condition curve of reception is stored, if comparison result is different, according to comparison result editor's failure
Diagnostic message is sent to terminal.
Further include step in the present embodiment：
Terminal sends test request to distal end；
According to the test request of reception, editor's test, which instructs, is respectively sent to two optical time domain reflectometers for distal end.
It is distally optical time domain reflectometer server in the present embodiment, when operation maintenance personnel can be with using terminal remote control light
Domain reflectometer server sends test and inquiry request, understands in time, the situation of diagnosis optical fiber link.
In the present embodiment, failure diagnosis information is wirelessly transmitted to terminal by failure diagnosis information editor's sending module.Specifically
When implementation, failure diagnosis information sending module can use the mode of 4G/3G/WI F I to be wirelessly transmitted to failure diagnosis information
Terminal, mode is fairly simple, common, and cost is simple, easy to maintain.
Embodiment eight
Such as Fig. 7, embodiment eight provides a kind of diagnostic method based on more pulsewidth optical cable diagnostic systems described in embodiment five,
Include the following steps：
Optical fibre link circuit testing curve is sent to optical fiber link condition curve fitting module using optical time domain reflectometer；
Using optical fiber link condition curve fitting module by the optical fibre link circuit testing curve matching of reception at an optical fiber chain
Line state curve is sent to distal end；
It is sent to optical time domain reflectometer using distal end editor's test command, the optical fiber link condition curve of reception is deposited
Storage, and the optical fiber link condition curve information is compared with preset optical fiber link condition curve information, if comparison result
It is identical, then the optical fiber link condition curve of reception is stored, if comparison result is different, according to comparison result editor's failure
Diagnostic message is sent to terminal.
Embodiment nine
As a specific work process of Fig. 8, embodiment five more pulse width sets closing light cable test methods provided is：Optical time domain
Reflectometer A and optical time domain reflectometer B is separately mounted to the both ends of optical fiber link, and operation maintenance personnel controls optical time domain by mobile phone remote
Reflectometer server is sent to test and inquiry request, and optical time domain reflectometer server editor, which tests, to be instructed and be sent to
Optical time domain reflectometer A and optical time domain reflectometer B execute dependence test, while can receive the test number of optical time domain reflectometer passback
According to.Big pulsewidth and small pulsewidth in the present embodiment are opposite, can change big pulsewidth and scun according to actual conditions and distance
Wide occurrence.Optical time domain reflectometer A and B execute test respectively, in test according to actual conditions intelligently switching pulsewidth, i.e., with
The increase of distance is continuously increased pulsewidth.Small pulsewidth, such as 1550nm wavelength, 3ns pulsewidths, test optical fiber link beginning are used first
Small case point, such as 10M wire jumpers gradually increase pulsewidth as distance increases, using big pulsewidth, such as 1550nm wavelength,
20000ns pulsewidths test long optical fibers link, such as 150km.After the completion of every optical time domain reflectometer test, test data, root are obtained
It is drawn the test curve of distinct pulse widths according to test data, the test curve of distinct pulse widths is overlapped and is fitted to an optical fiber
After the completion of link test curve, optical time domain reflectometer A and optical time domain reflectometer B tests, optical fibre link circuit testing curve is sent out respectively
Give optical time domain reflectometer server.
Optical time domain reflectometer A and B the optical fibre link circuit testing curve transmitted are fitted by optical time domain reflectometer server
One complete optical fiber link status data, is achieved, and routine test optical fiber link as initial value, and comparison is initial
Value or a upper optical fiber link status data find that optical fiber link is deposited when abnormal, and sending failure from trend operation maintenance personnel examines
Disconnected information, O＆M people carry out repair process according to failure diagnosis information.
Such as an optic communication links of Fig. 9, the loss that total link corresponds to 1550nm wavelength is：27dB, 4 connector decaying
Respectively：0.2dB, 0.2dB, 2dB, 0.2dB, connector 3 are position of failure point, and connector decaying is more than theoretical value, due to total link
Loss is more than discreet value, is tested.Intelligently switching small pulsewidth 3ns accurately tests out the first two to two optical time domain reflectometers
Connector (case point), then adjust and test out the length of optical fiber and loss below using big pulsewidth 20us.
Such as the test result that Figure 10 is A tables, the position decaying and loss of case point 1,2 can be correctly tested out, behind
The total length of optical fiber and loss, if Figure 11 be B tables test result, can correctly test out case point 3,4 position decay with
And loss, behind optical fiber total length and loss.Such as Figure 12, optical time domain reflectometer server receives optical time domain reflectometer A and B number
According to rear, it is fitted as a complete optical fiber link data, can correctly tests out the position of all case points in this chain road
It sets, decays, total link length, loss etc., operation is fairly simple, saves manpower and O＆M cost.
For embodiment of the method, for simple description, therefore it is all expressed as a series of combination of actions, but this field
Technical staff should know that the embodiment of the present invention is not limited by the described action sequence, because implementing according to the present invention
Example, certain steps can be performed in other orders or simultaneously.Next, those skilled in the art should also know that, specification
Described in embodiment belong to preferred embodiment, necessary to the involved action not necessarily embodiment of the present invention.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of optical time domain reflectometer, which is characterized in that including：
Collecting test data module uses small pulsewidth and big pulsewidth to test optical fiber chain respectively for being instructed according to the test of reception
Road and collecting test data, are respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；
Small pulsewidth Drawing of Curve module is sent to optical fiber chain for the test data of reception to be depicted as small pulsewidth test curve
Road test curve Fusion Module；
Big pulsewidth Drawing of Curve module is sent to optical fiber chain for the test data of reception to be depicted as big pulsewidth test curve
Road test curve Fusion Module；
Optical fibre link circuit testing curve Fusion Module, for the small pulsewidth test curve of reception and big pulsewidth test curve to be fused into
Optical fibre link circuit testing curve.
2. a kind of optical time domain reflectometer, which is characterized in that including at least two acquisition drafting modules and optical fibre link circuit testing curve
Fusion Module, wherein
Optical fibre link circuit testing curve Fusion Module, for the small pulsewidth test curve of reception and big pulsewidth test curve to be fused into
Optical fibre link circuit testing curve；
It includes collecting test data cell, small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve list to acquire drafting module
Member, wherein
Collecting test data cell uses small pulsewidth and big pulsewidth to test optical fiber chain respectively for being instructed according to the test of reception
Road and collecting test data, are respectively sent to small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve unit；
Small pulsewidth Drawing of Curve unit is sent to optical fiber chain for the test data of reception to be depicted as small pulsewidth test curve
Road test curve Fusion Module；
Big pulsewidth Drawing of Curve unit is sent to optical fiber chain for the test data of reception to be depicted as big pulsewidth test curve
Road test curve Fusion Module.
3. a kind of more pulsewidth optical cable diagnostic systems, which is characterized in that including two optical time domain reflections as described in claim 1
Instrument further includes optical fiber link condition curve fitting module and distal end, wherein
Optical time domain reflectometer is used to optical fibre link circuit testing curve being sent to optical fiber link condition curve fitting module；
Optical fiber link condition curve fitting module, the optical fibre link circuit testing curve matching for that will receive is at an optical fiber link shape
State curve is sent to distal end；
Distally, it is sent to optical time domain reflectometer for editing test command, the optical fiber link condition curve of reception is stored,
And be compared the optical fiber link condition curve information with preset optical fiber link condition curve information, if comparison result is not
Together, then terminal is sent to according to comparison result editor's failure diagnosis information.
4. more pulsewidth optical cable diagnostic systems according to claim 3, which is characterized in that two optical time domain reflectometers are pacified respectively
Mounted in the both ends of tested optical fiber link.
5. a kind of more pulsewidth optical cable diagnostic systems, which is characterized in that including optical time domain reflectometer as claimed in claim 2, also
Including optical fiber link condition curve fitting module and distal end, wherein
Optical time domain reflectometer, for optical fibre link circuit testing curve to be sent to optical fiber link condition curve fitting module；
Optical fiber link condition curve fitting module, the optical fibre link circuit testing curve matching for that will receive is at an optical fiber link shape
State curve is sent to distal end；
Distally, it is sent to optical time domain reflectometer for editing test command, the optical fiber link condition curve of reception is stored,
And be compared the optical fiber link condition curve information with preset optical fiber link condition curve information, if comparison result is not
Together, then terminal is sent to according to comparison result editor's failure diagnosis information.
6. more pulsewidth optical cable diagnostic systems according to claim 5, which is characterized in that acquisition drafting module is separately mounted to
The both ends of tested optical fiber link.
7. a kind of application method of optical time domain reflectometer as described in claim 1, which is characterized in that include the following steps：
It is instructed according to the test of reception using collecting test data module, small pulsewidth and big pulsewidth is used to test optical fiber link respectively
And collecting test data, it is respectively sent to small pulsewidth Drawing of Curve module and big pulsewidth Drawing of Curve module；
The test data of reception is depicted as small pulsewidth test curve using small pulsewidth Drawing of Curve module, is sent to optical fiber link
Test curve Fusion Module；
The test data of reception is depicted as big pulsewidth test curve using big pulsewidth Drawing of Curve module, is sent to optical fiber link
Test curve Fusion Module；
The small pulsewidth test curve of reception and big pulsewidth test curve are fused into using optical fibre link circuit testing curve Fusion Module
Optical fibre link circuit testing curve.
8. a kind of application method of optical time domain reflectometer as claimed in claim 2, which is characterized in that include the following steps：
It is instructed according to the test of reception using collecting test data cell, small pulsewidth and big pulsewidth is used to test optical fiber link respectively
And collecting test data, it is respectively sent to small pulsewidth Drawing of Curve unit and big pulsewidth Drawing of Curve unit；
The test data of reception is depicted as small pulsewidth test curve using small pulsewidth Drawing of Curve unit, is sent to optical fiber link
Test curve Fusion Module；
The test data of reception is depicted as big pulsewidth test curve using big pulsewidth Drawing of Curve unit, is sent to optical fiber link
Test curve Fusion Module；
The small pulsewidth test curve of reception and big pulsewidth test curve are fused into using optical fibre link circuit testing curve Fusion Module
Optical fibre link circuit testing curve.
9. a kind of diagnostic method based on more pulsewidth optical cable diagnostic systems described in claim 3, which is characterized in that including following
Step：
Optical fibre link circuit testing curve is sent to optical fiber link condition curve fitting module using optical time domain reflectometer；
Using optical fiber link condition curve fitting module by the optical fibre link circuit testing curve matching of reception at an optical fiber link shape
State curve is sent to distal end；
It is sent to optical time domain reflectometer using distal end editor's test command, the optical fiber link condition curve of reception is stored,
And be compared the optical fiber link condition curve information with preset optical fiber link condition curve information, if comparison result is not
Together, then terminal is sent to according to comparison result editor's failure diagnosis information.
10. a kind of diagnostic method based on more pulsewidth optical cable diagnostic systems described in claim 5, which is characterized in that including with
Lower step：
Optical fibre link circuit testing curve is sent to optical fiber link condition curve fitting module using optical time domain reflectometer；
Using optical fiber link condition curve fitting module by the optical fibre link circuit testing curve matching of reception at an optical fiber link shape
State curve is sent to distal end；
It is sent to optical time domain reflectometer using distal end editor's test command, the optical fiber link condition curve of reception is stored,
And be compared the optical fiber link condition curve information with preset optical fiber link condition curve information, if comparison result is not
Together, then terminal is sent to according to comparison result editor's failure diagnosis information.
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