CN104901738B - A kind of BOB tests system calibrates the method that BOB receives power automatically - Google Patents
A kind of BOB tests system calibrates the method that BOB receives power automatically Download PDFInfo
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- CN104901738B CN104901738B CN201510266359.8A CN201510266359A CN104901738B CN 104901738 B CN104901738 B CN 104901738B CN 201510266359 A CN201510266359 A CN 201510266359A CN 104901738 B CN104901738 B CN 104901738B
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Abstract
The invention discloses the method that a kind of BOB test systems and its automatic calibration BOB receive power, solving the problems, such as to receive BOB modules the calibrating mode of power, there are complicated, precision and high labor cost.The present invention includes host computer, the optical line terminal being connected with the host computer, BOB modules and the integrated identification systems for being internally integrated optical attenuator, and the optical splitter being connected at the same time with optical line terminal and optical attenuator by optical fiber；The optical attenuator is connected by optical fiber with BOB modules.The present invention designs reasonable, simple operation, it is combined by the effective of software and hardware, realizes BOB and receives calibrating automatically for power, not only the degree of automation is high, but also calibration accuracy is high, and effectively reduces unnecessary cost of labor input, therefore, the present invention has very high application value.
Description
Technical field
The present invention relates to a kind of BOSA in plate (BOB On Board, abbreviation BOB) technology, and in particular to be a kind of BOB
Test system calibrates the method that BOB receives power automatically.
Background technology
Although popularization is popular comprehensively for network, occupy mainstream at present is still ADSL technologies.With Web vector graphic
Scope constantly expands, and requirement of the user to network is also higher and higher, and is reduced with the production cost of optical fiber cable, so no matter
It is vast user, or equipment vendors and operation commercial city have turned one's attention to fiber optic network access technology.
However, the key and problem of the expensive always fiber to the home popularization of optical fiber access network equipment, therefore, seek one
Technical equipment kind of low cost simultaneously can production and application, become the emphasis of present Access investigative technique.BOSA is in plate abbreviation BOB
Technology, its maximum advantage can exactly shorten supply chain, reduce cost, and Some Domestic system manufacturer and ODM manufacturers be at present
There are research and production.The ONU (Optical Network Uint) of BOB technologies, its on hardware configuration with traditional ONU structures
Difference is only that the packaged type of optical module, and traditional ONU equipment uses independent light module package, can be with hot plug on ONU plates；
And BOB technologies are then that optical module is directly welded on ONU plates, simplify ONU system harden structures, thus reduce equipment into
This.
Although the appearance of BOB technologies provides good place mat for the popularization of fiber optic network access technology, BOB is being produced
, it is necessary to which its transmit power and reception power are tested and calibrated after out, make its test of eye pattern in oscilloscope can
Meet the requirements.However, the existing calibrating mode to BOB modules is manual calibration, and it is not only complicated, take time and effort, and
And precision is low, and high labor cost, it is highly detrimental to the batch production of product.Therefore, it is necessary to the calibration to BOB modules
Mode is improved.
The content of the invention
It is an object of the invention to provide the method that a kind of BOB tests system calibrates BOB reception power automatically, mainly solve
The calibrating mode of power is received to BOB modules there are complicated, calibration accuracy the problem of low and high labor cost.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of BOB tests system calibrates the method that BOB receives power automatically, and BOB tests system includes host computer,
Optical line terminal, BOB modules and the integrated identification systems for being internally integrated optical attenuator being connected with the host computer, Yi Jitong
The optical splitter crossed optical fiber while be connected with optical line terminal and optical attenuator；The optical attenuator is connected by optical fiber and BOB modules
Connect；
The method then comprises the following steps：
(1) integrality of system optical fiber cable is confirmed；
(2) verify that the received optical power value of optical attenuator is then to perform step whether in -28~-8 number range
(3)；It is no, then terminate to calibrate, and return to step (1)；
(3) optical transport of optical attenuator is opened；
(4) the continuous received optical power value RxPower of optical attenuator three is arbitrarily chosen1、RxPower2And RxPower3,
And optical line terminal luminous gear accordingly is set, after light output, handled via optical splitter, be passed to BOB after optical attenuator decay
Module, obtains corresponding BOB modules real-time reception performance number x1、x2And x3, the RxPower1、RxPower2、RxPower3's
Numerical values recited is between -28~-8；
(5) by RxPower1、RxPower2And RxPower3And x corresponding with three received optical power values1、x2And x3
It is updated to respectively in equation below, obtains ternary linear function group, is then calculated respectively according to the ternary linear function group
The value of slope_P2, slope_P1 and offset：
RxPower=slope_P2 × x2+slope_P1×x+offset
In formula, slope_P2 represents x2Slope efficiency, slope_P1 represents the slope efficiency of x, and offset represents bent
The offset of line；
(6) according to slope_P2, slope_P1 and the offset being calculated, it is updated to respectively in equation below：
RxPowerSlopeP2=(slope_P2/0.1) × 230 ①
RxPowerSlopeP1=(slope_P1/0.1) × 213 ②
RxPowerOffset=(offset/0.1) × 212 ③
Calculated 1., 2. and 3. respectively according to formula RxPowerSlopeP1, RxPowerSlopeP2 and
The value of RxPowerOffset；Described RxPowerSlopeP2, RxPowerSlopeP1 and the RxPowerOffset is represented respectively
The respective received optical power value of slope_P2, slope_P1 and offset, and RxPowerSlopeP1, RxPowerSlopeP2
It is 16-bit Interger type data with RxPowerOffset；
(7) obtained RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset are written to BOB moulds
In the register of block, and the received optical power of BOB modules is verified according to the data of write-in by the MCU of BOB modules；
(8) it is any to choose two continuous received optical power value y of BOB modules after verifying1、y2, and optical line terminal is set
Luminous gear accordingly, obtains corresponding BOB modules real-time reception performance number x4、x5, following judgment formula is then updated to respectively
In verified：
︱ x-y ︱≤2dbm
If after substituting into all y and corresponding x, above-mentioned judgment formula is set up, then calibration passes through；Otherwise, calibrate
Failure, return to step (1)；The y1、y2Numerical values recited is between -28~-8.
Further, the optical line terminal, integrated identification systems and BOB modules are connected by Eth interfaces and host computer
Connect.
Yet further, the optical splitter is 1 × 8 optical splitter；Optical attenuator and the BOB module is eight, and
The two connects one to one.
Preferably, the model IQS-600 or IQS-610 of the integrated identification systems.
Preferably, the model IQS-3150 of the optical attenuator.
Specifically, in the step (1), the detailed process for confirming the integrality of system optical fiber cable is：Judgement system light
Whether the number of fine line plug is less than or equal to 1000 times, is, then confirms that optical fiber cable is complete, can be continuing with；It is no, then need
The optical fiber cable more renewed.
Further, before step (4) is performed, also need to judge the real-time voltage of BOB modules whether in as defined in it
In the range of calibration voltage, it is then to perform step (4)；It is no, then the real-time voltage of BOB modules is adjusted, then performs step (4).
Yet further, in the step (7), by obtained RxPowerSlopeP1, RxPowerSlopeP2 and
RxPowerOffset is written in the register of BOB modules after splitting into two 8-bit Interger type data.
Compared with prior art, the invention has the advantages that：
(1) present invention by host computer, optical line terminal, optical splitter, integrated identification systems, each equipment of optical attenuator it
Between mutual cooperation, and after the operation of software is coordinated, effective using software and hardware combines, and is merging polyalgorithm and formula
Afterwards, the automatic calibration that power is received to BOB modules is realized, after being calibrated using reception power of the present invention to BOB modules,
Accurate foundation can be provided for follow-up eye pattern test b OB function admirables, while avoiding the occurrence of BOB defective products, improve production
Efficiency and the unnecessary cost of labor input of reduction, and improve the reputation of manufacturer.
(2) optical line terminal in the present invention, integrated identification systems and BOB modules are connected by Eth interfaces and host computer
Connect, since Eth has the characteristics that the load balancing for expanding interface bandwidth, increase link reliability and flow, thus can be very
Ensure the transmission between data well, further increase the precision of data processing and analysis.
(3) the integrated identification systems in the present invention preferably integrate identification systems using IQS-600 or IQS-610 types, such
System can not only effectively by optical delivery and data communications test application integration to a platform so that accelerate to set and
Actual test process, and impayable test automation is provided, reduce manually adjust to greatest extent, it is ensured that survey
The accuracy and repeatability of test result.
(4) optical attenuator that the integrated identification systems of the present invention are internally integrated preferably uses IQS-3150, not only simple operation,
And decay/power setting with accurate adjustment, it is highly suitable for realizing the decay to light in the present invention.
(5) present invention design is reasonable, and operation is flexible, convenient, it efficiently solves existing way calibration trouble, calibration
Slowly the defects of, precision is low, to realize that mass-producing outstanding light product provides strong guarantee, and then to quickly propel
The development and popularization of fiber optic network access technology provide place mat, and therefore, the present invention is with a wide range of applications, and is very suitable for
Large-scale promotion application.
Brief description of the drawings
Fig. 1 is the system structure diagram of the present invention.
Wherein, the corresponding parts title of reference numeral is：
1- host computers, 2- optical line terminals, 3- optical splitters, 4- integrate identification systems, 5-BOB modules.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include but not limited to
The following example.
Embodiment
As shown in Figure 1, the present invention provides a kind of BOB module test systems, it include host computer 1, optical line terminal 2,
Optical splitter 3, integrated identification systems 4 and BOB modules 5.The optical line terminal 2, integrated identification systems 4 and BOB modules 5 pass through
Eth interfaces are connected with host computer 1.The integrated identification systems 4 have been internally integrated optical attenuator, the type of the integrated identification systems 4
Number be preferably IQS-600 or IQS-610, and the optical attenuator model that it is internally integrated then be preferably IQS-3150.The light splitting
Device 3 is connected with optical line terminal 2 and optical attenuator at the same time by optical fiber, and the BOB modules 5 then pass through optical fiber and optical attenuator
Connection, and in the present embodiment, the optical splitter 3 is 1 × 8 optical splitter, and BOB modules 5 and optical attenuator are eight, both
Connect one to one, can so realize the test of multiple BOB modules at the same time.
According to above-mentioned hardware configuration, the flow for calibrating BOB modules reception power automatically to the test system below is situated between
Continue.
First, integrity checking is carried out to the optical fiber cable of system.Since the plug of optical fiber cable can be lossy, in order to
Whether guarantee system sends and receives luminous power, need the detection fiber line complete after certain number in plug.The present invention is set
The optical fiber plug number put is less than or equal to 1000 times, if≤1000 times, it can be continuing with；If plug number>
1000 times, then need replacing new optical fiber cable.
Then, whether -28~-8 number range in, be, then after performing if verifying the received optical power value of optical attenuator
Continuous step；It is no, then terminate to calibrate.
After confirming that the received optical power value of optical attenuator meets the requirements, the optical transport of optical attenuator is opened, to BOB modules
The calibration of received optical power starts.It should be noted that in the present embodiment, start in the calibration to BOB module received optical powers
It is then to start to calibrate before, it is necessary to judge whether the real-time voltage of BOB modules is in the range of its defined calibration voltage；
It is no, then just start to calibrate after adjusting the real-time voltage of BOB modules.
It is any to choose the continuous received optical power value RxPower of optical attenuator three1、RxPower2And RxPower3
(RxPower1、RxPower2、RxPower3Numerical values recited will must be between -28~-8), and optical line terminal is set
Shine gear accordingly, and after light output, BOB is passed to after handling (coupling, branch, distribution), optical attenuator decay via optical splitter
Module, obtains corresponding BOB modules real-time reception performance number x1、x2And x3.Obtain RxPower1、RxPower2、RxPower3、
x1、x2And x3Afterwards, it is updated to respectively in following formula (1), a ternary linear function group is obtained, then according to the ternary one
Equation of n th order n group calculates the value of slope_P2, slope_P1 and offset respectively：
RxPower=slope_P2 × x2+slope_P1×x+offset (1)
In formula, slope_P2 represents x2Slope efficiency, slope_P1 represents the slope efficiency of x, and offset represents bent
The offset of line.
Then, according to slope_P2, slope_P1 and the offset being calculated, then it is updated to respectively in equation below：
RxPowerSlopeP2=(slope_P2/0.1) × 230 (2)
RxPowerSlopeP1=(slope_P1/0.1) × 213 (3)
RxPowerOffset=(offset/0.1) × 212 (4)
According to formula (2), (3) and (4) calculate respectively RxPowerSlopeP1, RxPowerSlopeP2 and
The value of RxPowerOffset；Among these, described RxPowerSlopeP2, RxPowerSlopeP1 and RxPowerOffset
The expression respective received optical power value of slope_P2, slope_P1 and offset respectively, and RxPowerSlopeP1,
RxPowerSlopeP2 and RxPowerOffset is 16-bit Interger type data.
Followed by obtained RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset are written to
In the register (GN25L95) of BOB modules.The purpose of storage is to establish calibration benchmark, so that MCU pairs in the block of BOB moulds
The received optical power of BOB modules is verified.In the present embodiment, for convenience of the storage of data, the present invention first will
RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset split into two 8-bit Interger type data
Afterwards, it is then written in the register of BOB modules.
It is any to choose two continuous received optical power value y of BOB modules after verification1、y2(y1、y2Numerical values recited must be same
When meet >=-28 condition simultaneously≤- 8), and set optical line terminal accordingly shine gear, it is real-time to obtain corresponding BOB modules
Received power value x4、x5, then it is updated in following judgment formula and is verified respectively：
︱ x-y ︱≤2dbm
If after substituting into all y and corresponding x, above-mentioned judgment formula is set up, then calibration passes through；Otherwise, calibrate
Failure.So after operation, accurate foundation can be provided for follow-up eye pattern test b OB function admirables, avoid the occurrence of BOB defective products
While, the quality of production greatly improved, and then improve the reputation of manufacturer.
To more fully understand the calibration process of the present invention, illustrated below with an example.
The integrality of confirmation system optical fiber cable, and verify the received optical power value of optical attenuator, obtained received optical power
Value is respectively -27.1, -15.9, -8.7, -24.2, -9.6, in the range of -28~-8, meets alignment requirements.
The optical transport of optical attenuator is opened, then detects whether to need to operate voltage, if sent out in calibration process
Now need to reduce voltage, then first carry out voltage reducing operation, then start to calibrate.
Pass through received optical power value RxPower1=-27.1 set the luminous gear of optical line terminal, read correspond in real time
BOB module received power values x1=197；Pass through received optical power value RxPower2=-15.9 set shining for optical line terminal
Gear, reads corresponding BOB modules received power value x in real time2=2272；Pass through received optical power value RxPower3=-8.7 set
The luminous gear of optical line terminal is put, reads corresponding BOB modules received power value x in real time3=9152.
It is respectively 1.95,25.70,134.90 by -27.1, -15.9, -8.7 after dbm is converted to uW.If：1972-
22722=H, 22722-91522=J, 197-2272=K, 2272-9152=L, 1.95-25.70=F, 25.70-134.90=
G, and by formula RxPower=slope_P2 × x2+ slope_P1 × x+offset is converted, then after substituting into data, is obtained
Following result：
Slope_P1=(F × J-G × H)/(K × J-L × H)=0.010228233024114434；
Slope_P2=(F × L-G × K)/(H × L-J × K)=4.93937783287344e-7；
Due to offset=slope_P2 × x1 2+slope_P1×x1-RxPower1, therefore, substitute into slope_P1 and
After the value of slope_P2, offset=-0.08428653742409642 is finally obtained.
So RxPowerSlopeP2, RxPowerSlopeP1 and RxPowerOffset are calculated by equation below：
RxPowerSlopeP2=(4.93937783287344e-7/0.1) × 230=838；
RxPowerSlopeP1=(0.010228233024114434/0.1) × 213=5304；
RxPowerOffset=(- 0.08428653742409642/0.1) × 212=-3452.
(it is 16- by obtained RxPowerSlopeP2, RxPowerSlopeP1 and RxPowerOffset
BitInterger types data) be split as 2 8-bit (most-significant byte MSB, least-significant byte LSB) after, respectively obtain 3,70,20,184,
242nd, 132, then write in the register of BOB modules, then carry out the verification of BOB module received optical powers.
Any two continuous received optical power values -24.2 and -9.6 chosen after BOB module checks, in -28~-8
In the range of, meet alignment requirements, then according to optical power value -24.2 are received after verification, the luminous shelves of optical line terminal are set
Position, and the received power value 3.7 (uW) of BOB modules is read in real time, changed, obtain -24.317982759330046
(dbm), then calculate it and verify the difference of received optical power -24.2, then take absolute value, obtain
0.11798275933004731。
According to optical power value -9.6 are received after verification, the luminous gear of optical line terminal is set, and reads BOB modules in real time
Received power value 107.5 (uW), changed, obtain -9.685915357483757 (dbm), then calculate its with
The difference of received optical power -9.6 is verified, then is taken absolute value, obtains 0.08591535748375811.
Due to 0.11798275933004731 and 0.08591535748375811 be respectively less than 2, for the BOB moulds
The calibration that block receives power passes through.
The present invention rationally make use of existing ripe control technology and equipment, and be combined by the effective of software and hardware, design
Go out a kind of test system for BOB, it is achieved thereby that receiving the automatic calibration of power to BOB modules, solve conventional school
The problem of accurate troublesome, cumbersome, calibration accuracy is low.Compared with prior art, the present invention technological progress is fairly obvious, have prominent
The substantive distinguishing features and significant progress gone out.
Above-described embodiment is merely a preferred embodiment of the present invention, and is not construed as limiting the scope of the present invention, as long as adopting
With the design principle of the present invention, and the change for carrying out non-creative work on this basis and making, the present invention should all be belonged to
Protection domain within.
Claims (8)
1. a kind of BOB tests system calibrates the method that BOB receives power automatically, it is characterised in that the BOB test system bags
Include host computer (1), the optical line terminal (2) being connected with the host computer (1), BOB modules (5) and be internally integrated optical attenuator
Integrated identification systems (4), and pass through the optical fiber optical splitter (3) that is connected with optical line terminal (2) and optical attenuator at the same time；Institute
Optical attenuator is stated to be connected with BOB modules (5) by optical fiber；
The method then comprises the following steps：
(1) integrality of system optical fiber cable is confirmed；
(2) the received optical power value of optical attenuator is verified whether in -28~-8 number range, is then to perform step (3)；
It is no, then terminate to calibrate, and return to step (1)；
(3) optical transport of optical attenuator is opened；
(4) the continuous received optical power value RxPower of optical attenuator three is arbitrarily chosen1、RxPower2And RxPower3, and set
Put optical line terminal to shine accordingly gear, after light output, handled via optical splitter, be passed to BOB modules after optical attenuator decay,
Obtain corresponding BOB modules real-time reception performance number x1、x2And x3, the RxPower1、RxPower2、RxPower3Numerical value it is big
It is small to be between -28~-8；
(5) by RxPower1、RxPower2And RxPower3And x corresponding with three received optical power values1、x2And x3Respectively
It is updated in equation below, obtains ternary linear function group, slope_ is then calculated according to the ternary linear function group respectively
The value of P2, slope_P1 and offset：
RxPower=slope_P2 × x2+slope_P1×x+offset
In formula, slope_P2 represents x2Slope efficiency, slope_P1 represent x slope efficiency, offset represent curve it is inclined
Move；
(6) according to slope_P2, slope_P1 and the offset being calculated, it is updated to respectively in equation below：
RxPowerSlopeP2=(slope_P2/0.1) × 230 ①
RxPowerSlopeP1=(slope_P1/0.1) × 213 ②
RxPowerOffset=(offset/0.1) × 212 ③
1., 2. and 3. calculate RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset respectively according to formula
Value；Described RxPowerSlopeP2, RxPowerSlopeP1 and the RxPowerOffset represents slope_P2, slope_ respectively
The respective received optical power values of P1 and offset, and RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset
It is 16-bit Interger type data；
(7) obtained RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset are written to BOB modules
In register, and the received optical power of BOB modules is verified according to the data of write-in by the MCU of BOB modules；
(8) it is any to choose two continuous received optical power value y of BOB modules after verifying1、y2, and set optical line terminal corresponding
Luminous gear, obtain corresponding BOB modules real-time reception performance number x4、x5, be then updated to respectively in following judgment formula into
Row verification：
︱ x-y ︱≤2dbm
If after substituting into all y and corresponding x, above-mentioned judgment formula is set up, then calibration passes through；Otherwise, calibration failure,
Return to step (1)；The y1、y2Numerical values recited is between -28~-8.
2. a kind of BOB tests system according to claim 1 calibrates the method that BOB receives power automatically, it is characterised in that
The optical line terminal (2), integrated identification systems (4) and BOB modules (5) are connected by Eth interfaces with host computer (1).
3. a kind of BOB tests system according to claim 2 calibrates the method that BOB receives power automatically, it is characterised in that
The optical splitter (3) is 1 × 8 optical splitter；Optical attenuator and the BOB module (5) is eight, and the two company of one-to-one corresponding
Connect.
4. a kind of BOB tests system according to Claims 2 or 3 calibrates the method that BOB receives power automatically, its feature exists
In the model IQS-600 or IQS-610 of the integrated identification systems (4).
5. a kind of BOB tests system according to claim 4 calibrates the method that BOB receives power automatically, it is characterised in that
The model IQS-3150 of the optical attenuator.
6. a kind of BOB tests system according to claim 5 calibrates the method that BOB receives power automatically, it is characterised in that
In the step (1), the detailed process for confirming the integrality of system optical fiber cable is：Judge system optical fiber cable plug number whether
Less than or equal to 1000 times, it is then to confirm that optical fiber cable is complete, can be continuing with；It is no, then need replacing new optical fiber cable.
7. a kind of BOB tests system according to claim 6 calibrates the method that BOB receives power automatically, it is characterised in that
Before step (4) is performed, also need to judge that the real-time voltage of BOB modules whether in the range of its defined calibration voltage, is,
Then perform step (4)；It is no, then the real-time voltage of BOB modules is adjusted, then performs step (4).
8. a kind of BOB tests system according to claim 7 calibrates the method that BOB receives power automatically, it is characterised in that
In the step (7), obtained RxPowerSlopeP1, RxPowerSlopeP2 and RxPowerOffset are split into two
It is written to after a 8-bit Interger type data in the register of BOB modules.
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