CN115955278B - Digital panel based on optical fiber signal analysis - Google Patents
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Abstract
The invention relates to the field of optical fiber communication, in particular to a digital panel based on optical fiber signal analysis, which comprises a detection module, a dispersion compensation module, a data processing module, a sample database and a display panel, wherein the detection module is used for acquiring the optical fiber dispersion coefficient and waveform data of an optical fiber signal of a relay station and calculating dispersion characterization parameters, the dispersion compensation quantity is adjusted according to the dispersion characterization parameters, the dispersion characterization parameters of adjacent relay stations are acquired to determine the compensation effect of dispersion compensation, the relevant dispersion compensation data with good compensation effect are stored, and the dispersion compensation quantity of a dispersion compensation device of the relay station is determined according to the dispersion compensation quantity stored in the sample database.
Description
Technical Field
The invention relates to the field of optical fiber communication, in particular to a digital panel based on optical fiber signal analysis.
Background
In the optical fiber communication process, a repeater is required to amplify a signal attenuated by long-distance transmission, and the long-distance transmission causes dispersion of the optical fiber signal and further causes waveform distortion, so that dispersion compensation is required to be performed on the optical fiber signal at each repeater station, and further the optical fiber communication rate and the communication distance are improved.
Chinese patent publication No.: CN101322335a discloses a device and a method for adaptively compensating chromatic dispersion of an optical communication system, which are used for adaptively compensating chromatic dispersion of the optical communication system, and comprises an input optical fiber, an optical domain adjustable chromatic dispersion compensator, an output optical fiber, a signaling system unit and a control logic unit, wherein the control logic unit is used for calculating an adjusting value of the optical domain adjustable chromatic dispersion compensator according to chromatic dispersion performance information detected by the signaling system unit, and feeding back and controlling the optical domain adjustable chromatic dispersion compensator to adjust the chromatic dispersion compensation amount of the optical domain chromatic dispersion compensator.
However, the prior art has the following problems,
in the prior art, the adjustment of the dispersion compensation amount when the optical fiber signals are subjected to dispersion compensation at different relay stations is not considered, the compensation effect after the dispersion compensation is performed according to the waveform distortion rate and the optical fiber dispersion coefficient characterization of the optical fiber signals of adjacent relay stations, and the dispersion compensation mode or the dispersion compensation amount is correspondingly adjusted based on the compensation effect, so that the dispersion compensation precision is not high.
Disclosure of Invention
In order to solve the above problems, the present invention provides a display panel based on optical fiber signal analysis, comprising:
the detection module comprises an optical fiber signal oscilloscope arranged at each relay station and used for acquiring the waveform distortion rate of an optical fiber signal and a dispersion detector used for acquiring the dispersion coefficient of the optical fiber;
a dispersion compensation module including a dispersion compensation device provided at each relay station for performing dispersion compensation on the optical fiber signal;
a sample database to store data;
the data processing module comprises a first compensation judging unit, a second compensation judging unit and a control unit which are connected with each other;
the first compensation judging unit is connected with the detection module and the dispersion compensation module, and is used for calculating a dispersion characterization parameter corresponding to the optical fiber signal according to the waveform distortion rate and the optical fiber dispersion coefficient of the optical fiber signal of the relay station sent by the detection module under the call of the control unit, judging whether the dispersion compensation quantity of the dispersion compensation device is required to be adjusted according to the dispersion characterization parameter, controlling the dispersion compensation device to carry out dispersion compensation on the optical fiber signal according to the corresponding dispersion compensation quantity, judging whether the adjusted dispersion compensation quantity is recorded according to the difference value of the dispersion characterization parameter corresponding to the optical fiber signal and the dispersion characterization parameter corresponding to the optical fiber signal received by the next relay station, and storing the record to the sample database;
the second compensation judging unit is connected with the detection module and the dispersion compensation module, and is used for comparing the waveform distortion rate and the fiber dispersion coefficient of the optical fiber signals of the relay station sent by the detection module with the waveform distortion rate and the fiber dispersion coefficient of each data set in the sample database under the calling of the control unit, judging whether the corresponding data set is called according to the comparison result, determining the dispersion compensation amount of the dispersion compensation device according to the dispersion compensation amount stored in the called data set, and controlling the dispersion compensation device to carry out dispersion compensation on the optical fiber signals according to the corresponding dispersion compensation amount;
the control unit is used for judging whether to call the first compensation judging unit or the second compensation judging unit based on the data quantity in the sample database;
the display panel comprises a touch display screen and is used for displaying the data sent by the data processing module.
Further, the first compensation judging unit obtains the data detected by the optical fiber signal oscilloscope of the relay station to determine the waveform distortion rate P, calculates a dispersion characterization parameter E corresponding to the optical fiber signal received by the relay station according to the waveform distortion rate P and the optical fiber dispersion coefficient F detected by the dispersion detector by the formula (1),
in the formula (1), P0 represents a preset waveform distortion ratio comparison parameter, and F0 represents a preset fiber dispersion coefficient comparison parameter.
Further, the first compensation judging unit compares the dispersion characterization parameter E with a preset first dispersion comparison parameter E1 and a preset second dispersion comparison parameter E2, judges whether the dispersion compensation amount of the dispersion compensation device of the relay station needs to be adjusted according to the comparison result, wherein E2 is larger than E1,
when E is more than or equal to E2, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensating device needs to be adjusted, controls the dispersion compensation amount of the dispersion compensating device to be adjusted to K 'to carry out dispersion compensation on the optical fiber signal, and sets K' =K0+k1XE/E2;
when E1 is less than or equal to E2, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensation device is not required to be adjusted, and the dispersion compensation is carried out on the optical fiber signal by the preset standard dispersion compensation amount K0;
when E < E1, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensating device needs to be adjusted, controls the dispersion compensation amount of the dispersion compensating device to be adjusted to K 'to carry out dispersion compensation on the optical fiber signal, and sets K' =K0-k1XE/E2;
wherein k1 represents a preset dispersion compensation adjustment parameter.
Further, when the first compensation determining unit determines that the dispersion compensation amount of the dispersion compensating device of the relay station needs to be adjusted, the serial number of the relay station and the serial number of the next relay station to be reached by the optical fiber signal need to be determined.
Further, the first compensation judging unit obtains the information of the detection module, calculates a dispersion characterization parameter difference delta E of a dispersion characterization parameter E corresponding to the optical fiber signal received by the relay station and a dispersion characterization parameter E corresponding to the optical fiber signal received by the next relay station adjacent to the relay station, judges whether to record the adjusted dispersion compensation amount according to a comparison result of the dispersion characterization parameter difference delta E and a preset dispersion characterization parameter difference comparison parameter delta E0, and stores the record to the sample database,
when |Δe| < Δe0, the first compensation determining unit determines that the adjusted dispersion compensation amount needs to be recorded, and stores the waveform distortion rate P, the fiber dispersion coefficient F and the dispersion compensation amount corresponding to the fiber signal received by the relay station into the same data set and then stores the same data set into the sample database.
Further, the control unit compares the number N of data sets in the sample database with the number N0 of data sets in a preset sample database, and judges whether to call the first compensation judging unit or the second compensation judging unit according to the comparison result, wherein,
when N is more than or equal to N0, the control unit judges that the second compensation judging unit is required to be called;
when N is smaller than N0, the control unit judges that the first compensation judging unit needs to be called.
Further, the second compensation determination unit acquires the waveform distortion rate P and the fiber dispersion coefficient F of the optical fiber signal detected by the detection module at the relay station, compares the waveform distortion rate P and the fiber dispersion coefficient F with the waveform distortion rate P and the fiber dispersion coefficient F in the data set in the sample database one by one, and determines whether to call the corresponding data set according to the comparison result,
the second compensation determination unit calculates a difference deltap between the waveform distortion ratio of the optical fiber signal acquired by the detection module and the waveform distortion ratio in the data set and calculates a difference deltaf between the fiber dispersion coefficient of the optical fiber signal acquired by the detection module and the fiber dispersion coefficient in the data set,
when ΔP < ΔP0 and ΔF < ΔF0, the second compensation determination unit determines to invoke the data set,
wherein Δp0 represents a preset distortion ratio difference value comparison parameter, and Δf0 represents a preset fiber dispersion coefficient difference value comparison parameter.
Further, the second compensation determination unit determines a dispersion compensation amount of a dispersion compensation device of the relay station based on the dispersion compensation amounts in all the invoked data sets, wherein,
the second compensation judging unit calculates an average value delta K of compensation parameters in all invoked data sets, and controls the dispersion compensation quantity of the dispersion compensation device to be the average value delta K so as to carry out dispersion compensation on the optical fiber signals.
Further, the first compensation determination unit is further configured to obtain an optical fiber dispersion coefficient F and a waveform distortion rate P of an optical fiber signal detected by a detection module disposed in two adjacent relay stations, calculate a difference Δee of dispersion characterization parameters corresponding to the optical fiber signals received by the two adjacent relay stations, compare the difference Δee with a preset difference comparison parameter Δe0, determine whether a link of the two adjacent relay stations is abnormal according to a comparison result,
and when delta Ee is more than or equal to delta Ee0, the first compensation judging unit judges that the links of two adjacent relay stations are abnormal.
Further, the first compensation judging unit judges that the links of two adjacent relay stations are abnormal, then determines the serial numbers of the relay stations and sends the serial numbers to the display panel, and the display panel marks the serial numbers of the corresponding relay stations on the touch display screen according to the received serial number information and sends out maintenance warning.
Compared with the prior art, the method comprises the steps of setting a detection module, a dispersion compensation module, a data processing module, a sample database and a display panel, obtaining the fiber dispersion coefficient and waveform data of an optical fiber signal of a relay station through the detection module, calculating dispersion characterization parameters according to the fiber dispersion coefficient and the waveform distortion ratio to characterize the dispersion degree of the optical fiber signal, adjusting the dispersion compensation quantity of optical fiber compensation equipment according to the dispersion characterization parameters, obtaining the dispersion characterization parameters of adjacent relay stations by the data processing module to determine the compensation effect of dispersion compensation, storing relevant dispersion compensation data with good compensation effect, comparing the data with a data set in the sample database according to the fiber dispersion coefficient and the waveform distortion ratio when the sample capacity in the sample database reaches a preset standard, calling the data set, determining the dispersion compensation quantity of a dispersion compensation device of the relay station according to the dispersion compensation quantity stored in the called data set, and monitoring the whole optical fiber transmission system in real time, so as to timely adjust the dispersion compensation quantity, improve the compensation precision of dispersion compensation and further improve the transmission distance and transmission efficiency of the optical fiber.
In particular, the detection module detects the optical fiber signals received by each relay station to obtain the optical fiber dispersion coefficient and the waveform distortion rate, the data processing module calculates the dispersion characterization parameter E corresponding to the optical fiber signals received by the relay station according to the optical fiber dispersion coefficient and the waveform distortion rate, the optical fiber dispersion coefficient can visually represent the dispersion degree of the optical fiber signals, the waveform distortion rate can indirectly represent the dispersion degree, in the actual situation, the long-distance transmission of the optical fiber signals can generate dispersion, the waveform distortion can cause waveform distortion, the waveform distortion can cause intersymbol interference, the light receiving sensitivity is reduced, and the relay distance of a system is influenced.
In particular, the first compensation judging unit calculates the dispersion characterization parameter difference delta E of the dispersion characterization parameter E corresponding to the relay station and the dispersion characterization parameter E corresponding to the next relay station adjacent to the relay station so as to evaluate the dispersion compensation effect of the dispersion compensation device arranged on the current relay station,
in practical situations, since the dispersion compensation is usually determined as a range, the dispersion compensation may be formed as overcompensation, and the overcompensation or overcompensation may have an influence on the transmission of the optical fiber signals, therefore, the dispersion compensation amount needs to be continuously adjusted after each compensation effect is evaluated, when the corresponding dispersion characterization parameter difference delta E after the dispersion compensation changes and has larger change amplitude during the evaluation, the dispersion compensation effect is better, the dispersion compensation amount for performing the dispersion compensation on the relay station, the waveform distortion rate of the optical fiber signals before the compensation and the optical fiber dispersion coefficient are stored, so as to construct sample data, the dispersion compensation amount with better dispersion compensation effect, the waveform distortion rate of the optical fiber signals before the compensation and the optical fiber dispersion coefficient are stored in the sample data, and the dispersion compensation amount is determined according to the sample data, so that the dispersion compensation effect is better, the accuracy of the dispersion compensation is improved, and the transmission distance of the optical fiber transmission system is further improved.
In particular, the data processing module of the invention performs fitting comparison according to the fiber dispersion coefficient and the waveform distortion rate of the fiber signals received by the relay station and a plurality of data sets stored in a sample database so as to correspond to the called data sets, wherein the dispersion compensation quantity for dispersion compensation stored in the data sets is dispersion compensation data with good compensation effect in the historical dispersion compensation process, and the dispersion compensation quantity of the current relay station is determined based on the dispersion compensation quantity, thereby improving the accuracy of dispersion compensation, the dispersion compensation effect and the transmission distance of the fiber transmission system.
In particular, the invention is also provided with a digital panel, and the digital panel can display the fiber dispersion coefficient and the signal distortion rate of the fiber signals of each relay station acquired by the detection module in real time, thereby being convenient for technicians to analyze data.
Drawings
FIG. 1 is a schematic diagram of a digital panel structure based on fiber optic signal analysis according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a data processing module according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a detection module according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a display panel according to an embodiment of the invention;
in the figure, 1: indicator lamp, 2: touch display screen, 3: first data interface, 4: second data interface, 5: a speech window.
Description of the embodiments
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 and fig. 2, which are schematic diagrams of a display panel structure based on optical fiber signal analysis according to an embodiment of the invention and a data processing module structure according to an embodiment of the invention, a digital panel based on optical fiber signal analysis of the invention includes:
the detection module comprises an optical fiber signal oscilloscope arranged at each relay station and used for acquiring the waveform distortion rate of an optical fiber signal and a dispersion detector used for acquiring the dispersion coefficient of the optical fiber;
a dispersion compensation module including a dispersion compensation device provided at each relay station for performing dispersion compensation on the optical fiber signal;
a sample database to store data;
the data processing module comprises a first compensation judging unit, a second compensation judging unit and a control unit which are connected with each other;
the first compensation judging unit is connected with the detection module and the dispersion compensation module, and is used for calculating a dispersion characterization parameter corresponding to the optical fiber signal according to the waveform distortion rate and the optical fiber dispersion coefficient of the optical fiber signal of the relay station sent by the detection module under the call of the control unit, judging whether the dispersion compensation quantity of the dispersion compensation device is required to be adjusted according to the dispersion characterization parameter, controlling the dispersion compensation device to carry out dispersion compensation on the optical fiber signal according to the corresponding dispersion compensation quantity, judging whether the adjusted dispersion compensation quantity is recorded according to the difference value of the dispersion characterization parameter corresponding to the optical fiber signal and the dispersion characterization parameter corresponding to the optical fiber signal received by the next relay station, and storing the record to the sample database;
the second compensation judging unit is connected with the detection module and the dispersion compensation module, and is used for comparing the waveform distortion rate and the fiber dispersion coefficient of the optical fiber signals of the relay station sent by the detection module with the waveform distortion rate and the fiber dispersion coefficient of each data set in the sample database under the calling of the control unit, judging whether the corresponding data set is called according to the comparison result, determining the dispersion compensation amount of the dispersion compensation device according to the dispersion compensation amount stored in the called data set, and controlling the dispersion compensation device to carry out dispersion compensation on the optical fiber signals according to the corresponding dispersion compensation amount;
the control unit is used for judging whether to call the first compensation judging unit or the second compensation judging unit based on the data quantity in the sample database;
the display panel comprises a touch display screen and is used for displaying the data sent by the data processing module.
Specifically, referring to fig. 3, the specific structure of the detection module is not limited in the present invention, and the optical fiber signal oscilloscope and the chromatic dispersion detector of the detection module only need to be capable of implementing corresponding functions, which are all the prior art and are not described herein.
Specifically, the detection of the waveform distortion rate is a common function of the optical fiber signal oscilloscope, and the waveform distortion rate can be obtained by obtaining the optical fiber signal fluctuation image, which is not described herein.
Specifically, the specific structure of the dispersion compensating device is not limited in the present invention, and the dispersion compensating device in the prior art generally comprises a tunable dispersion compensating device and a non-tunable dispersion compensating device, and in the present invention, the dispersion compensating device should be a tunable dispersion compensating device, which only needs to adjust the dispersion compensating amount.
Specifically, the specific structure of the data processing module is not limited, and each unit may be configured using a logic unit, and the logic unit may be a field programmable logic unit, a microprocessor, a processor used in a computer, or the like.
Specifically, the invention does not limit the concrete structure of the sample database, and only needs to realize data storage and data interaction.
Specifically, the first compensation judging unit obtains the data detected by the optical fiber signal oscilloscope of the relay station to determine the waveform distortion rate P, calculates a dispersion characterization parameter E corresponding to the optical fiber signal received by the relay station according to the waveform distortion rate P and the optical fiber dispersion coefficient F detected by the dispersion detector by the formula (1),
in the formula (1), P0 represents a preset waveform distortion ratio comparison parameter, F0 represents a preset fiber dispersion coefficient comparison parameter, 0 is more than 0 and less than 10%, and 0 is more than 0 and less than or equal to 20 ps/(nm.km).
Specifically, the first compensation determination unit compares the dispersion characterization parameter E with a preset first dispersion comparison parameter E1 and a preset second dispersion comparison parameter E2, determines whether to adjust the dispersion compensation amount of the dispersion compensation device of the relay station according to the comparison result, wherein E2 is greater than E1,
when E is more than or equal to E2, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensating device needs to be adjusted, controls the dispersion compensation amount of the dispersion compensating device to be adjusted to K 'to carry out dispersion compensation on the optical fiber signal, and sets K' =K0+k1XE/E2;
when E1 is less than or equal to E2, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensation device is not required to be adjusted, and the dispersion compensation is carried out on the optical fiber signal by the preset standard dispersion compensation amount K0;
when E < E1, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensating device needs to be adjusted, controls the dispersion compensation amount of the dispersion compensating device to be adjusted to K 'to carry out dispersion compensation on the optical fiber signal, and sets K' =K0-k1XE/E2;
wherein k1 represents a preset dispersion compensation adjustment parameter, and 0 < k1 < 6 ps/(nm. Km).
Specifically, the detection module detects the fiber signal received by each relay station to obtain the fiber dispersion coefficient and the waveform distortion rate, the data processing module calculates the dispersion characterization parameter E corresponding to the fiber signal received by the relay station according to the fiber dispersion coefficient and the waveform distortion rate, the fiber dispersion coefficient can visually represent the dispersion degree of the fiber signal, the waveform distortion rate can indirectly represent the dispersion degree, in the actual situation, the long-distance transmission of the fiber signal can generate dispersion, the waveform distortion can cause waveform distortion, the waveform distortion can cause intersymbol interference, the light receiving sensitivity is reduced, and the relay distance of the system is influenced, so that the dispersion compensation quantity can be regulated more reliably by taking the parameter as a reference, the dispersion compensation quantity can be regulated more accurately, the dispersion compensation precision is improved, and the transmission distance and the transmission rate of the fiber transmission system are improved.
Specifically, when the first compensation determination unit determines that the dispersion compensation amount of the dispersion compensation device of the relay station needs to be adjusted, the serial number of the relay station and the serial number of the next relay station to which the optical fiber signal will arrive need to be determined.
Specifically, the first compensation determination unit obtains the information of the detection module, calculates a dispersion characterization parameter difference Δe of a dispersion characterization parameter E corresponding to an optical fiber signal received by the relay station and a dispersion characterization parameter E corresponding to an optical fiber signal received by a next relay station adjacent to the relay station, determines whether to record the adjusted dispersion compensation amount according to a comparison result of the dispersion characterization parameter difference Δe and a preset dispersion characterization parameter difference comparison parameter Δe0, and stores the record to the sample database, wherein Δe0 is more than 0 and less than or equal to 2
When |Δe| < Δe0, the first compensation determining unit determines that the adjusted dispersion compensation amount needs to be recorded, and stores the waveform distortion rate P, the fiber dispersion coefficient F and the dispersion compensation amount corresponding to the fiber signal received by the relay station into the same data set and then stores the same data set into the sample database.
Specifically, the first compensation judging unit calculates the dispersion characterization parameter difference delta E of the dispersion characterization parameter E corresponding to the relay station and the dispersion characterization parameter E corresponding to the next relay station adjacent to the relay station so as to evaluate the effect of dispersion compensation of the dispersion compensating device arranged on the current relay station,
in practical situations, since the dispersion compensation is usually determined as a range, the dispersion compensation may be formed as overcompensation, and the overcompensation or overcompensation may have an influence on the transmission of the optical fiber signals, therefore, the dispersion compensation amount needs to be continuously adjusted after each compensation effect is evaluated, when the corresponding dispersion characterization parameter difference delta E after the dispersion compensation changes and has larger change amplitude during the evaluation, the dispersion compensation effect is better, the dispersion compensation amount for performing the dispersion compensation on the relay station, the waveform distortion rate of the optical fiber signals before the compensation and the optical fiber dispersion coefficient are stored, so as to construct sample data, the dispersion compensation amount with better dispersion compensation effect, the waveform distortion rate of the optical fiber signals before the compensation and the optical fiber dispersion coefficient are stored in the sample data, and the dispersion compensation amount is determined according to the sample data, so that the dispersion compensation effect is better, the accuracy of the dispersion compensation is improved, and the transmission distance of the optical fiber transmission system is further improved.
Specifically, the control unit compares the number N of data sets in the sample database with the number N0 of data sets in a preset sample database, and judges whether to call the first compensation judging unit or the second compensation judging unit according to the comparison result, wherein,
when N is more than or equal to N0, the control unit judges that the second compensation judging unit is required to be called;
when N is smaller than N0, the control unit judges that the first compensation judging unit needs to be called.
Specifically, the second compensation determination unit acquires the waveform distortion rate P and the fiber dispersion coefficient F of the optical fiber signal detected by the detection module at the relay station, compares the waveform distortion rate P and the fiber dispersion coefficient F with the waveform distortion rate P and the fiber dispersion coefficient F in the data set in the sample database one by one, and determines whether to call the corresponding data set according to the comparison result,
the second compensation determination unit calculates a difference deltap between the waveform distortion ratio of the optical fiber signal acquired by the detection module and the waveform distortion ratio in the data set and calculates a difference deltaf between the fiber dispersion coefficient of the optical fiber signal acquired by the detection module and the fiber dispersion coefficient in the data set,
when ΔP < ΔP0 and ΔF < ΔF0, the second compensation determination unit determines to invoke the data set,
wherein Δp0 represents a preset distortion ratio difference value comparison parameter, 0 < Δp0 < 1%, and Δf0 represents a preset fiber dispersion coefficient difference value comparison parameter, 0.5 ps/(nm.
Specifically, the second compensation determination unit determines the dispersion compensation amount of the dispersion compensation device of the relay station based on the dispersion compensation amounts in all the invoked data sets, wherein,
the second compensation judging unit calculates an average value delta K of compensation parameters in all invoked data sets, and controls the dispersion compensation quantity of the dispersion compensation device to be the average value delta K so as to carry out dispersion compensation on the optical fiber signals.
Specifically, the data processing module of the invention performs fitting comparison according to the fiber dispersion coefficient and the waveform distortion rate of the fiber signals received by the relay station and a plurality of data sets stored in a sample database so as to correspond to the called data sets, wherein the dispersion compensation quantity for dispersion compensation stored in the data sets is dispersion compensation data with good compensation effect in the historical dispersion compensation process, and the dispersion compensation quantity of the current relay station is determined based on the dispersion compensation quantity, so that the accuracy of dispersion compensation is improved, the dispersion compensation effect is improved, and the transmission distance of the fiber transmission system is further improved.
Specifically, the first compensation determination unit is further configured to obtain an optical fiber dispersion coefficient F and a waveform distortion rate P of an optical fiber signal detected by a detection module disposed in two adjacent relay stations, calculate a difference Δee of dispersion characterization parameters corresponding to the optical fiber signals received by the two adjacent relay stations, compare the difference Δee with a preset difference comparison parameter Δe0, determine whether a link of the two adjacent relay stations is abnormal according to a comparison result,
and when delta Ee is more than or equal to delta Ee0, the first compensation judging unit judges that the links of two adjacent relay stations are abnormal.
Specifically, the first compensation judging unit judges that the links of two adjacent relay stations are abnormal, then determines the serial numbers of the relay stations and sends the serial numbers to the display panel, and the display panel marks the serial numbers of the corresponding relay stations on the touch display screen according to the received serial number information and sends out maintenance warning.
Examples
Referring to fig. 4, a schematic diagram of a display panel according to an embodiment of the invention is shown, and the display panel of the embodiment includes a touch display screen 2 connected with a data processing module for displaying corresponding content, an indicator light 1 connected with a detection module for displaying on-off of optical fiber signals, a first data interface 3 and a second data interface 4 connected with a sample database for deriving data, and a voice window 5 connected with the data processing module for sending out a warning;
the indicator light 1 can display multiple colors to display whether the relay station has an optical fiber signal, for example, after a relay station is selected by touching the display screen, the optical fiber signal of the selected relay station can be displayed green when normal, and red when no optical fiber signal exists, and specific setting can be defined by a person skilled in the art as required, and details are not repeated here;
the first data interface 3 and the second data interface 4 may be USB interfaces, and may be externally connected to a storage device to export data recorded in a sample database;
the touch display screen 2 is used for correspondingly displaying signals sent by the data processing module and realizing user interaction;
a voice broadcasting unit can be arranged in the voice window 5 and used for sending out warning voice when no optical fiber signal or the data processing module sends out a corresponding warning signal.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (9)
1. A digital panel based on fiber optic signal analysis, comprising:
the detection module comprises an optical fiber signal oscilloscope arranged at each relay station and used for acquiring the waveform distortion rate of an optical fiber signal and a dispersion detector used for acquiring the dispersion coefficient of the optical fiber;
a dispersion compensation module including a dispersion compensation device provided at each relay station for performing dispersion compensation on the optical fiber signal;
a sample database to store data;
the data processing module comprises a first compensation judging unit, a second compensation judging unit and a control unit which are connected with each other;
the first compensation judging unit is connected with the detection module and the dispersion compensation module, and is used for calculating a dispersion characterization parameter corresponding to the optical fiber signal according to the waveform distortion rate and the optical fiber dispersion coefficient of the optical fiber signal of the relay station sent by the detection module under the call of the control unit, judging whether the dispersion compensation quantity of the dispersion compensation device is required to be adjusted according to the dispersion characterization parameter, controlling the dispersion compensation device to carry out dispersion compensation on the optical fiber signal according to the corresponding dispersion compensation quantity, judging whether the adjusted dispersion compensation quantity is recorded according to the difference value of the dispersion characterization parameter corresponding to the optical fiber signal and the dispersion characterization parameter corresponding to the optical fiber signal received by the next relay station, and storing the record to the sample database;
the second compensation judging unit is connected with the detection module and the dispersion compensation module, and is used for comparing the waveform distortion rate and the fiber dispersion coefficient of the optical fiber signals of the relay station sent by the detection module with the waveform distortion rate and the fiber dispersion coefficient of each data set in the sample database under the calling of the control unit, judging whether the corresponding data set is called according to the comparison result, determining the dispersion compensation amount of the dispersion compensation device according to the dispersion compensation amount stored in the called data set, and controlling the dispersion compensation device to carry out dispersion compensation on the optical fiber signals according to the corresponding dispersion compensation amount;
the control unit is used for judging whether to call the first compensation judging unit or the second compensation judging unit based on the data quantity in the sample database;
the display panel comprises a touch display screen and is used for displaying the data sent by the data processing module;
the first compensation judging unit obtains the data detected by the optical fiber signal oscilloscope of the relay station to determine the waveform distortion rate P, calculates a dispersion characterization parameter E corresponding to the optical fiber signal received by the relay station according to the waveform distortion rate P and the optical fiber dispersion coefficient F detected by the dispersion detector by the formula (1),
in the formula (1), P0 represents a preset waveform distortion ratio comparison parameter, and F0 represents a preset fiber dispersion coefficient comparison parameter.
2. The optical fiber signal analysis-based digital panel according to claim 1, wherein the first compensation determination unit compares the dispersion characterization parameter E with a preset first dispersion comparison parameter E1 and a preset second dispersion comparison parameter E2, determines whether or not to adjust a dispersion compensation amount of a dispersion compensation device of the relay station according to a comparison result, wherein E2 > E1,
when E is more than or equal to E2, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensating device needs to be adjusted, controls the dispersion compensation amount of the dispersion compensating device to be adjusted to K 'to carry out dispersion compensation on the optical fiber signal, and sets K' =K0+k1XE/E2;
when E1 is less than or equal to E2, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensation device is not required to be adjusted, and the dispersion compensation is carried out on the optical fiber signal by the preset standard dispersion compensation amount K0;
when E < E1, the first compensation judging unit judges that the dispersion compensation amount of the dispersion compensating device needs to be adjusted, controls the dispersion compensation amount of the dispersion compensating device to be adjusted to K 'to carry out dispersion compensation on the optical fiber signal, and sets K' =K0-k1XE/E2;
wherein k1 represents a preset dispersion compensation adjustment parameter.
3. The digital panel based on optical fiber signal analysis according to claim 2, wherein the first compensation determination unit determines the serial number of the repeater and the serial number of the next repeater to which the optical fiber signal will arrive when it is determined that the dispersion compensation amount of the dispersion compensation device of the repeater needs to be adjusted.
4. The optical fiber signal analysis-based digital panel according to claim 3, wherein the first compensation determination unit acquires information of the detection module, calculates a dispersion characterization parameter difference Δe of a dispersion characterization parameter E corresponding to an optical fiber signal received by the relay station and a dispersion characterization parameter E corresponding to an optical fiber signal received by a next relay station adjacent to the relay station, determines whether to record the adjusted dispersion compensation amount according to a comparison result of the dispersion characterization parameter difference Δe and a preset dispersion characterization parameter difference comparison parameter Δe0, and stores the record in the sample database,
when |Δe| < Δe0, the first compensation determining unit determines that the adjusted dispersion compensation amount needs to be recorded, and stores the waveform distortion rate P, the fiber dispersion coefficient F and the dispersion compensation amount corresponding to the fiber signal received by the relay station into the same data set and then stores the same data set into the sample database.
5. The fiber optic signal analysis based digital panel according to claim 4, wherein the control unit compares the number of data sets N in the sample database with a preset number of sample database data sets N0, determines whether to call the first compensation determination unit or the second compensation determination unit according to the comparison result, wherein,
when N is more than or equal to N0, the control unit judges that the second compensation judging unit is required to be called;
when N is smaller than N0, the control unit judges that the first compensation judging unit needs to be called.
6. The optical fiber signal analysis-based digital panel according to claim 5, wherein the second compensation determination unit acquires a waveform distortion rate P and an optical fiber dispersion coefficient F of the optical fiber signal detected by the detection module at the relay station, compares the waveform distortion rate P and the optical fiber dispersion coefficient F with the waveform distortion rate P and the optical fiber dispersion coefficient F in the data set in the sample database one by one, and determines whether to call the corresponding data set according to the comparison result, wherein,
the second compensation determination unit calculates a difference deltap between the waveform distortion ratio of the optical fiber signal acquired by the detection module and the waveform distortion ratio in the data set and calculates a difference deltaf between the fiber dispersion coefficient of the optical fiber signal acquired by the detection module and the fiber dispersion coefficient in the data set,
when Δp < Δp0 and Δf < Δf0, the second compensation determining unit determines to call the data set, where Δp0 represents a preset distortion ratio difference comparison parameter, and Δf0 represents a preset fiber dispersion coefficient difference comparison parameter.
7. The optical fiber signal analysis-based digital panel according to claim 6, wherein the second compensation decision unit determines a dispersion compensation amount of a dispersion compensation means of the relay station based on the dispersion compensation amounts in all the invoked data sets, wherein,
the second compensation judging unit calculates an average value delta K of compensation parameters in all invoked data sets, and controls the dispersion compensation quantity of the dispersion compensation device to be the average value delta K so as to carry out dispersion compensation on the optical fiber signals.
8. The digital panel according to claim 7, wherein the first compensation determining unit is further configured to obtain an optical fiber dispersion coefficient F and a waveform distortion rate P of the optical fiber signals detected by the detection module disposed in the two adjacent relay stations, calculate a difference Δee between dispersion characterization parameters corresponding to the optical fiber signals received by the two adjacent relay stations, compare the difference Δee with a preset difference comparison parameter Δe0, and determine whether the links of the two adjacent relay stations are abnormal according to the comparison result,
and when delta Ee is more than or equal to delta Ee0, the first compensation judging unit judges that the links of two adjacent relay stations are abnormal.
9. The digital panel based on optical fiber signal analysis according to claim 8, wherein the first compensation determination unit determines the serial number of the relay station after determining that the link between two adjacent relay stations is abnormal, and sends the serial number to the display panel, and the display panel marks the serial number of the corresponding relay station on the touch display screen according to the received serial number information and sends out an overhaul warning.
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