CN104501945B - A kind of light power meter automatic gauge verification system and method - Google Patents
A kind of light power meter automatic gauge verification system and method Download PDFInfo
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Abstract
The present invention relates to a kind of light power meter automatic gauge verification system and method.This system includes stable output light source module, adjustable optical attenuator module, etalon optical power metering module, optical branching device, tested light power meter automatic reading device and computer system module, and described computer system module includes touch-screen, operating system and application software module；Described computer system module is used for controlling described stablizing output light source module, adjustable optical attenuator module, luminous power metering module and optical branching device.Original semi-automatic mode is improved by the present invention by increasing tested light power meter automatic reading device, and the automatic Verification program according to relevant rolling schedule design, it is proposed that a kind of full-automatic calibration method；It addition, devise the variable fixable dress of automatic reading device to hold mode, it is allowed to be adapted to the various dissimilar and tested light power meter of size, improves practicality.
Description
Technical field
The present invention relates to optical fiber light power meter or the verification system of communication light power meter and method, particularly a kind of light merit
Rate meter automatic gauge verification system and method.
Background technology
Fiber optic communication is due to remarkable advantages such as its bandwidth resources are big, transmission capacity is big, transmission speed is high, at communication, electric power
It is widely used etc. each field.The luminous power of luminescent device, the loss of transmission channel, the range of sensitivity of light receiving device part
Etc. factor, important is realized for fiber optic communication, measuring light power be daily fiber optic communication construction, maintenance main
One of work.For ensureing being normally carried out of fiber optic communication, the assay calibration of light power meter is the most necessary.
The light power meter that at present communication service is used mainly has hand-held and desk-top two kinds.Metering to light power meter is examined
Determine mainly to be manually operated (optical attenuator), the side of record (etalon optical power meter reading and light power meter reading to be measured)
Method, part producer achieves optical attenuator and automatically steps the semi-automatic mode of operation and etalon optical power meter automatic reading.
No matter use manual mode or semi-automatic mode, all can't do without the human intervention during measurement verification.Right
In across the entire province or even the measurement verification of a large amount of light power meters of nationwide, both modes the most both labor intensive, increasing
Add the working time, be also easy to introduce artificial error.
Summary of the invention
It is an object of the invention to provide a kind of light power meter automatic gauge verification system and method.
For achieving the above object, the technical scheme is that a kind of light power meter automatic gauge verification system, including
One stablizes output light source module, for exporting the light of multi-wavelength；
One adjustable optical attenuator module, for decaying to the described light stablizing the output of output light source module；
One etalon optical power metering module, for metering light after adjustable optical attenuator is decayed；
One optical branching device；
One tested light power meter automatic reading device, for reading the reading of tested luminous power；
And a computer system module, including for carrying out the touch-screen of man-machine interaction, operating system and application software
Module；Described computer system module is used for controlling described stablizing output light source module, adjustable optical attenuator module, light power meter
Amount module and optical branching device.
In embodiments of the present invention, the described wavelength of light stablizing the output of output light source module include 850nm, 1310nm,
1550nm。
In embodiments of the present invention, the described light joint categories stablizing output light source module selects FC/PC, and by described meter
Calculation machine system module controls selection and the light source output of optical wavelength type and closes.
In embodiments of the present invention, described tested light power meter automatic reading device is by the spy of band registration automatic identification function
Head composition.
In embodiments of the present invention, described application software module is loaded with automatic gauge calibrating software.
Present invention also offers a kind of calibrating using a kind of light power meter automatic gauge verification system as above
Method, comprises the steps,
Step S1: first open light power meter to be measured before calibrating and carry out being energized 30 minutes, connecting test line, perform step
S2；
Step S2: system electrification, automatic gauge calibrating running software, if self-inspection is abnormal, then provide abnormality alarming prompting,
End program；Otherwise perform step S3；
Step S3: carry out automatic gauge verification parameters setting:
1) the power measurement scope [a, b] of light power meter to be measured is set；
2) splitting ratio of optical branching device is set；
3) test event is selected, including null offset, measurement reproducibility, the error of indication；
4) the duplicate measurements number of times of measurement reproducibility is setAnd the time interval of adjacent twice；
5) pendulous frequency of each indicating value in error of indication test is set, and the indicating value number of required measurement；Automation
Measurement verification software program, according to indicating value number and power measurement scope, can provide the point of required measurement automatically,；
6) step-up error threshold value, including the error threshold of null offset, the error threshold of measurement reproducibility and the error of indication
Error threshold；
Step S4: carry out null offset test；
Step S5: measure reperformance test, i.e. carries out the measurement of stipulated number to same fiber end face；Measure every time
Afterwards, next time measure before, restart an adjustable optical attenuator；Carry out repeatability result by formula (1) to calculate,
Formula (1)
In formula:The percentage of relative standard deviation；
The reading value of the quasi-optical power measurement module of duplicate measurements markers every time；
——The arithmetic mean of instantaneous value of secondary duplicate measurements reading；
Step S6: carry out error of indication test, i.e. be iterated measuring according to the test point calculated；Surveying every time
During amount, automatic gauge calibrating software controls the attenuation of optical attenuation module, until being fed back to by etalon optical power measurement module
When the numerical value come reaches test point, start to identify the reading of tested light power meter, after stable reading, carry out record, by formula
(2) error of indication calculating is carried out,
Formula (2)
In formula:The splitting ratio of optical branching device, etalon optical power meter place branch road props up with tested light power meter place
The splitting ratio on road is: 1；
Meters under testSecondary measurement mean value；
Etalon optical power measurement module readingSecondary measurement mean value；
Step S7: the respective items that measurement result is filled in report file, and contrast with set error threshold,
Draw the grade of examined and determine light power meter, form complete word document form report by operating system.
In embodiments of the present invention, in the step 4) of described step S3, describedValue is 6.
In embodiments of the present invention, in the step 5) of described step S3, describedValue is 3.
Compared to prior art, the method have the advantages that
1) structure of optical fiber power metering verification system has been carried out Intensive Design；2) realize according to measurement verification regulations
Automatic gauge main program；3) design light power meter automatic reading device principle to be measured, compensate for semi-automatic metering side
The deficiency of formula, it also avoid the light power meter for different manufacturers model principle and carries out interface exploitation, reduce automatic gauge
Realize difficulty；4) mode held by the dress designing light power meter automatic reading device to be measured, to be allowed to be applicable to different manufacturers not
With the different size of equipment of type.
Accompanying drawing explanation
Fig. 1 is light power meter automatic gauge verification system structural principle block diagram of the present invention.
Fig. 2 is light power meter automatic gauge verification system main program flow chart of the present invention.
Fig. 3 be light power meter automatic gauge verification system of the present invention be embodied as wiring diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is specifically described.
As it is shown in figure 1, one light power meter automatic gauge verification system of the present invention, including
One stablizes output light source module, is used for exporting the light of multi-wavelength (850nm, 1310nm, 1550nm)；
One adjustable optical attenuator module, for decaying to the described light stablizing the output of output light source module；
One etalon optical power metering module, for metering light after adjustable optical attenuator is decayed；
One optical branching device；
One tested light power meter automatic reading device, for reading the reading of tested luminous power；Described tested light power meter
Automatic reading device is made up of the probe of band registration automatic identification function；
And a computer system module, including for carrying out the touch-screen of man-machine interaction, operating system and application software
Module；Described computer system module is used for controlling described stablizing output light source module, adjustable optical attenuator module, light power meter
Amount module and optical branching device.Described application software module is loaded with automatic gauge calibrating software.
The using method of above-mentioned light power meter automatic gauge verification system is as follows:
Tested light power meter is started shooting, preheats 30 minutes.During this period of time, test wire connection can be carried out, open certainly
The operations such as dynamic validation program；According to tested light power meter wavelength measurement scope (such as 850 nm, 1310 nm, 1550 nm), select
Delivery outlet corresponding to light source module, light adjustable damping module and measuring light power module is (corresponding to 850 nm, 1310 nm/
1550 nm two kinds delivery outlets), select optical fiber and the pattern (single mode, multimode) of optical branching device.According to above-mentioned selected delivery outlet and
The light joint categories (such as FC/PC) of tested light power meter, select the optical fiber of corresponding joint categories and optical branching device (if optical branching device
Restricted, such as only ST interface type, can be transferred by the jumping fiber of ST-FC/PC)；
After connecting test system as shown in Figure 3, tested light power meter is positioned over correct position, adjusts automatic reading
The direction of probe, is allowed to face tested light power meter display screen, and keeps certain distance；
Open verification system power supply, after tested light power meter has preheated, start automatic Verification program by display screen,
Carry out relative set, click on and start calibrating.At the end of calibrating, the probation redport that inspection system is provided, confirm errorless after, preserve
File, closes closed system, removes test wire, closes tested light power meter power supply.
As in figure 2 it is shown, present invention also offers a kind of employing a kind of light power meter automatic gauge calibrating as above
The calibration method of system, comprises the steps,
Step S1: first open light power meter to be measured before calibrating and carry out being energized 30 minutes, connecting test line, perform step
S2；
Step S2: system electrification, automatic gauge calibrating running software, if self-inspection is abnormal, then provide abnormality alarming prompting,
End program；Otherwise perform step S3；
Step S3: carry out automatic gauge verification parameters setting:
1) the power measurement scope [a, b] of light power meter to be measured is set；
2) splitting ratio of optical branching device is set；
3) test event is selected, including null offset, measurement reproducibility, the error of indication；
4) the duplicate measurements number of times of measurement reproducibility is setAnd the time interval of adjacent twice；
5) pendulous frequency of each indicating value in error of indication test is set, and the indicating value number of required measurement；From
Dynamicization measurement verification software program, according to indicating value number and power measurement scope, can provide the point of required measurement automatically,；
6) step-up error threshold value, including the error threshold of null offset, the error threshold of measurement reproducibility and the error of indication
Error threshold；
Step S4: carry out null offset test；
Step S5: measure reperformance test, i.e. carries out the measurement of stipulated number to same fiber end face；Measure every time
Afterwards, next time measure before, restart an adjustable optical attenuator；Carry out repeatability result by formula (1) to calculate,
Formula (1)
In formula:The percentage of relative standard deviation；
The reading value of the quasi-optical power measurement module of duplicate measurements markers every time；
——The arithmetic mean of instantaneous value of secondary duplicate measurements reading；
Step S6: carry out error of indication test, i.e. be iterated measuring according to the test point calculated；Surveying every time
During amount, automatic gauge calibrating software controls the attenuation of optical attenuation module, until being fed back to by etalon optical power measurement module
When the numerical value come reaches test point, start to identify the reading of tested light power meter, after stable reading, carry out record, by formula
(2) error of indication calculating is carried out,
Formula (2)
In formula:The splitting ratio of optical branching device, etalon optical power meter place branch road props up with tested light power meter place
The splitting ratio on road is: 1；
Meters under testSecondary measurement mean value；
Etalon optical power measurement module readingSecondary measurement mean value；
Step S7: the respective items that measurement result is filled in report file, and contrast with set error threshold,
Draw the grade of examined and determine light power meter, form complete word document form report by operating system.
In embodiments of the present invention, in the step 4) of described step S3, describedValue is 6.
In embodiments of the present invention, in the step 5) of described step S3, describedValue is 3.
Being above presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function is made
With during without departing from the scope of technical solution of the present invention, belong to protection scope of the present invention.
Claims (7)
1. the calibration method of a light power meter automatic gauge verification system, it is characterised in that: described light power meter automates
Measurement verification system includes
One stablizes output light source module, for exporting the light of multi-wavelength；
One adjustable optical attenuator module, for decaying to the described light stablizing the output of output light source module；
One etalon optical power metering module, for metering light after adjustable optical attenuator is decayed；
One optical branching device；
One tested light power meter automatic reading device, for reading the reading of tested luminous power；
And a computer system module, including for carrying out the touch-screen of man-machine interaction, operating system and application software module；
Described computer system module is used for controlling described stablizing output light source module, adjustable optical attenuator module, luminous power metering mould
Block and optical branching device；
The calibration method of described light power meter automatic gauge verification system, comprises the steps:
Step S1: first open light power meter to be measured before calibrating and carry out being energized 30 minutes, connecting test line, perform step S2；
Step S2: system electrification, automatic gauge calibrating running software, if self-inspection is abnormal, then provides abnormality alarming prompting, terminate
Program；Otherwise perform step S3；
Step S3: carry out automatic gauge verification parameters setting:
1) the power measurement scope [a, b] of light power meter to be measured is set；
2) the splitting ratio α of optical branching device is set；
3) test event is selected, including null offset, measurement reproducibility, the error of indication；
4) the duplicate measurements frequency n of measurement reproducibility is setCFAnd the time interval △ T of adjacent twice；
5) the pendulous frequency n of each indicating value in error of indication test is setPJ, and indicating value number n of required measurementSS；Automatic gauge is examined and determine
Software program, according to indicating value number and power measurement scope, can provide the point of required measurement automatically
6) step-up error threshold value, including the error threshold of null offset, the error threshold of measurement reproducibility and the mistake of the error of indication
Difference limen value；
Step S4: carry out null offset test；
Step S5: measure reperformance test, i.e. carries out the measurement of stipulated number to same fiber end face；Each measurement
Afterwards, next time measure before, restart an adjustable optical attenuator；Carry out repeatability result by formula (1) to calculate,
In formula: σuThe percentage of relative standard deviation；
WiThe reading value of the quasi-optical power measurement module of duplicate measurements markers every time；
——nCFThe arithmetic mean of instantaneous value of secondary duplicate measurements reading；
Step S6: carry out error of indication test, i.e. be iterated measuring according to the test point calculated；Measuring every time
Time, automatic gauge calibrating software controls the attenuation of optical attenuation module, until being fed back by etalon optical power measurement module
Numerical value when reaching test point, start to identify the reading of tested light power meter, after stable reading, carry out record, by formula (2)
Carry out error of indication calculating,
In formula: the splitting ratio of α optical branching device, etalon optical power meter place branch road divides with tested light power meter place branch road
Light ratio is for α: 1；
Meters under test nPJSecondary measurement mean value；
The n of etalon optical power measurement module readingPJSecondary measurement mean value；
Step S7: the respective items that measurement result is filled in report file, and contrast with set error threshold, draw
The grade of the light power meter examined and determine, forms complete word document form report by operating system.
The calibration method of a kind of light power meter automatic gauge verification system the most according to claim 1, it is characterised in that:
The wavelength of the described light stablizing the output of output light source module includes 850nm, 1310nm, 1550nm.
The calibration method of a kind of light power meter automatic gauge verification system the most according to claim 2, it is characterised in that:
The described light joint categories stablizing output light source module selects FC/PC, and is controlled optical wavelength class by described computer system module
The selection of type and light source export and close.
The calibration method of a kind of light power meter automatic gauge verification system the most according to claim 1, it is characterised in that:
Described tested light power meter automatic reading device is made up of the probe of band registration automatic identification function.
The calibration method of a kind of light power meter automatic gauge verification system the most according to claim 1, it is characterised in that:
Described application software module is loaded with automatic gauge calibrating software.
The calibration method of a kind of light power meter automatic gauge verification system the most according to claim 1, it is characterised in that:
The step 4 of described step S3) in, described nCFValue is 6.
The calibration method of a kind of light power meter automatic gauge verification system the most according to claim 1, it is characterised in that:
The step 5 of described step S3) in, described nPJValue is 3.
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| CN113595627B (en) * | 2021-07-02 | 2022-05-17 | 中国电子技术标准化研究院 | Optical power calibration method based on space linear superposition principle |
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| JP2010091441A (en) * | 2008-10-09 | 2010-04-22 | Arkray Inc | Light quantity monitoring apparatus and light quantity monitoring method |
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