CN103152095B - A kind of optical module life-span prediction method and device - Google Patents

Abstract

Embodiments of the invention provide a kind of optical module life-span prediction method and device, relate to photoelectron technical field, the time that the optical module that can give warning in advance more accurately lost efficacy, and guide product changes optical module in advance.The method comprises: the electric current under collection optical module operating state and the temperature of synchronization; Judge whether the electric current collected meets the early warning electric current preset, when electric current meets early warning electric current, the temperature of electric current and synchronization is substituted into the service time that optical module life prediction formula obtains optical module.The present invention is applied to the life prediction of optical module.

Description

A kind of optical module life-span prediction method and device

Technical field

The present invention relates to photoelectron technical field, particularly relate to a kind of optical module life-span prediction method and device.

Background technology

Optical module is one of core component of networking products, mainly carries out the opto-electronic conversion of communication service, once optical module lost efficacy will cause the interruption of Network.Therefore, in order to not affect the transmission of Network, generally alarming threshold is set in the built-in register of optical module.This alarming threshold is the thresholding of laser works electric current, namely when module detects electric current when exceeding thresholding with regard to trigger alerts, realizes alarm effect.

But, in actual applications, inventor finds that in prior art, at least there are the following problems: alarming threshold built-in in optical module is the thresholding arranged for laser works electric current, and the performance temperature influence of laser is large, and the higher required operating current of temperature is higher.And optical module producer is in order to avoid fault alarm, the thresholding therefore arranged is too high, makes, when optical module is when producing alarm, lost efficacy, and not having forewarning function at all.

Summary of the invention

Embodiments of the invention provide a kind of optical module life-span prediction method and device, the time that the optical module that can give warning in advance more accurately lost efficacy, and guide product changes optical module in advance.

For achieving the above object, embodiments of the invention adopt following technical scheme:

First aspect, provides a kind of optical module life-span prediction method, comprising:

Optical module life predication apparatus gathers the temperature of electric current under described optical module operating state and synchronization;

Judge whether the electric current collected meets the early warning electric current preset, when described electric current meets early warning electric current, the temperature of described electric current and synchronization is substituted into the service time that optical module life prediction formula obtains described optical module.

In the implementation that the first is possible, according to first aspect, before judging whether the electric current collected meets the early warning electric current preset, also comprise:

The temperature of the electric current under optical module operating state described at least one group that collects and synchronization is substituted into respectively the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n;$

Described coefficient is substituted into described mean square deviation formula, obtains the mean square deviation that described mean square deviation formula is corresponding;

Judge whether described mean square deviation is less than default error margin;

If the determination result is YES, then determine coefficient and the exponent number of described optical module Life Prediction Model, and the coefficient of described optical module Life Prediction Model and exponent number are substituted into described optical module Life Prediction Model formula and obtain described optical module life prediction formula, described exponent number is the group number substituting into the described electric current of described mean square deviation formula and the temperature of synchronization;

Wherein, described T representation temperature, described t _irepresent the time, described I (t _i) represent described t _ithe electric current that moment is corresponding, described I ₀(T) be the constant term of closing with described temperature T-phase, described a _n(T) with described b _n(T) be the coefficient closed with described temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of described temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{a_n}{T}^l,$ for described I _o(T) corresponding coefficient, for described a _n(T) corresponding coefficient, for described b _n(T) corresponding coefficient, n ∈ (1,2,3......N), l ∈ (0,1,2,3......L).

In the implementation that the second is possible, the implementation possible according to the first, described judge whether described mean square deviation is less than default error margin after, also comprise:

If judged result is no, electric current then under the described optical module operating state of continuation collection and the temperature of synchronization, and according to the temperature of the electric current under all described optical module operating state collected and synchronization, again substitute into described mean square deviation formula and carry out mean square deviation calculating;

Until the mean square deviation calculated is less than described default error margin.

In the implementation that the third is possible, in conjunction with first aspect or the first possible implementation or the possible implementation of the second, when described electric current meets early warning electric current, described method also comprises:

Default threshold current and threshold temperature corresponding to described default threshold current are substituted into the life time that optical module life prediction formula obtains described optical module;

The difference calculating described life time and described service time obtains the residual life of described optical module.

In the 4th kind of possible implementation, the implementation possible according to the third, described method also comprises:

When the residual life of described optical module exceedes default threshold value, then send early warning information.

Second aspect, provides a kind of optical module life predication apparatus, comprising:

Data acquisition unit, for gathering the temperature of electric current under described optical module operating state and synchronization;

Useful life computing unit, for judging whether the electric current that described data acquisition unit acquires arrives meets the early warning electric current preset, when described electric current meets early warning electric current, the temperature of described electric current and synchronization is substituted into the service time that optical module life prediction formula obtains described optical module.

In the implementation that the first is possible, according to second aspect, described device also comprises:

Coefficient acquiring unit, for by described data acquisition unit acquires at least one group described in the temperature of electric current under optical module operating state and synchronization substitute into the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set respectively, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n;$

Mean square deviation computing unit, substitutes into described mean square deviation formula for the described coefficient obtained by described coefficient acquiring unit, obtains the mean square deviation that described mean square deviation formula is corresponding;

Mean square deviation judging unit, for judging whether the described mean square deviation that described mean square deviation computing unit calculates is less than default error margin;

Formula acquiring unit, if the result judged for described mean square deviation judging unit is yes, determine coefficient and the exponent number of described optical module Life Prediction Model, and the coefficient of described optical module Life Prediction Model and exponent number are substituted into described optical module Life Prediction Model formula and obtain described optical module life prediction formula, described exponent number is substitute into the described electric current of described mean square deviation formula and the group number of the temperature of same time;

Wherein, described T representation temperature, described t _irepresent the time, described I (t _i) represent described t _ithe electric current that moment is corresponding, described I ₀(T) be the constant term of closing with described temperature T-phase, described a _n(T) with described b _n(T) be the coefficient closed with described temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of described temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{a_n}{T}^l,$ for described I _o(T) corresponding coefficient, for described a _n(T) corresponding coefficient, for described b _n(T) corresponding coefficient, n ∈ (1,2,3......N), l ∈ (0,1,2,3......L).

In the implementation that the second is possible, the implementation possible according to the first, described device also comprises:

If the result that described mean square deviation judging unit judges is no, electric current then under the described optical module operating state of described data acquisition unit continuation collection and the temperature of synchronization, and the temperature of electric current under all described optical module operating state arrived according to described data acquisition unit acquires and synchronization, again substitute into described mean square deviation formula and carry out mean square deviation calculating; Until the mean square deviation that described mean square deviation computing unit calculates is less than described default error margin.

In the implementation that the third is possible, in conjunction with second aspect or the first possible implementation or the possible implementation of the second, described device also comprises:

Life time computing unit, the optical module life prediction formula obtained for default threshold current and threshold temperature corresponding to described default threshold current being substituted into described formula acquiring unit obtains the life time of described optical module;

Residual life acquiring unit, the difference for calculating the described life time that described life time computing unit calculates and the described service time that described useful life, computing unit calculated obtains the residual life of described optical module.

In the 4th kind of possible implementation, the implementation possible according to the third, described device also comprises:

Prewarning unit, for when the residual life of the described optical module that described residual life acquiring unit obtains exceedes default threshold value, then sends early warning information.

The optical module life-span prediction method that embodiments of the invention provide and device, by the temperature of the electric current under the optical module collected operating state and synchronization being substituted in the optical module life prediction formula determined, calculate the residual life of optical module, thus the time that the optical module that can give warning in advance more accurately lost efficacy, guide product changes optical module in advance.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

A kind of optical module structure figure that Fig. 1 provides for the embodiment of the present invention;

The flow chart of a kind of optical module life-span prediction method that Fig. 2 provides for the embodiment of the present invention;

The flow chart of the another kind of optical module life-span prediction method that Fig. 3 provides for the embodiment of the present invention;

The Exponential Model curve chart of the optical module life prediction formula that Fig. 4 provides for the embodiment of the present invention;

The logarithmic model matched curve figure of the optical module life prediction formula that Fig. 5 provides for the embodiment of the present invention;

The step model matched curve figure of the optical module life prediction formula that Fig. 6 provides for the embodiment of the present invention;

The structural representation of a kind of optical module life predication apparatus that Fig. 7 provides for the embodiment of the present invention;

The structural representation of the another kind of optical module life predication apparatus that Fig. 8 provides for the embodiment of the present invention;

The structural representation of a kind of optical module life predication apparatus that Fig. 9 provides for another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Optical module is one of core component of networking products, its major function is the opto-electronic conversion of carrying out communication service, if optical module lost efficacy will cause the interruption of Network, therefore, in advance early warning is carried out to the residual life of optical module, the accident caused because optical module inefficacy makes communication service interrupt can be reduced.And embodiments of the invention are exactly the residual life being predicted optical module by the electric current of detection laser and the temperature of synchronization.Wherein, with reference to shown in Fig. 1, optical module 1 is by laser 11, receives light detection chip 12, first resistance (R1) 13, second resistance (R2) 14, micro-control unit (MicroControlUnit, be called for short MCU) 15 and the product webmaster end equipment 16 of outside form, wherein, above-mentioned MCU is the control device in optical module, can carry out analog-to-digital conversion to the data detected, and it is constant to keep the luminous power of optical module to export by the electric current controlling laser.

The concrete composition of the structure in conjunction with above-mentioned optical module, the operation principle of optical module is: light sends from laser, opto-electronic conversion is done by a light detection chip, then the electric current obtained is sampled through the second resistance (R2), negative feedback optical power control is carried out through MCU, crossed the electric current of laser by control flow check, keep constant luminous power to export.When laser deterioration, for ensureing that constant luminous power exports, the operating current flowing through the first resistance (R1) can constantly increase, and the electric current of different time all can be recorded in inside MCU and carries out the Fitting Calculation residual life, finally remaining lifetime value is fed back to webmaster end, the situation of the residual life of this optical module is reported by webmaster end, or, also can predicting residual useful life model formation be embedded in the software installed in webmaster end, by gathering the laser works electric current recorded in MCU, calculate residual life at webmaster end and report the residual life of this optical module, the optical module life predication apparatus that embodiments of the invention provide can be MCU, also can be webmaster end equipment, or the unit be integrated on MCU or webmaster end or module, its concrete form the present invention do not limit, the method that can realize embodiments of the invention provides is as the criterion, the concrete structure based on above-mentioned optical module and operation principle, The embodiment provides a kind of optical module life-span prediction method, as shown in Figure 2, the method comprises the steps:

201, the electric current under optical module life predication apparatus collection optical module operating state and the temperature of synchronization.

Concrete, MCU in electric current optical module under the optical module operating state collected in step 201 obtains according to the voltage of the first resistance (R1) detected and this first resistance (R1), and the temperature of electric current under synchronization under the above-mentioned optical module operating state collected in step 201 is detected by the temperature sensor in the MCU of optical module.

Optionally, as shown in Figure 3, after step 201, also comprise the deterministic process of optical module life prediction formula, concrete optical module life prediction formula obtaining step is as follows:

The temperature of the electric current under at least one group of optical module operating state collected and synchronization is substituted into the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set by 201a, optical module life predication apparatus respectively, obtain the coefficient of optical module Life Prediction Model formula, wherein this optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n$ Formula 1

Wherein, T representation temperature, t _irepresent the time, I (t _i) represent t _ithe electric current that moment is corresponding, I ₀(T) be the constant term of closing with temperature T-phase, a _nand b (T) _n(T) be the coefficient closed with temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{a_n}{T}^l,$ for I _o(T) corresponding coefficient, for a _n(T) corresponding coefficient, for b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

In addition, a is worked as _n(T), when being 0, optical module Life Prediction Model formula is exponential function, and the degradation model of its optical module is exponential model; Work as b _m(T), when being 0, optical module Life Prediction Model formula is logarithmic function, and namely the degradation model of optical module is logarithmic model; Work as a _n(T) ≠ 0 and b _n(T) when ≠ 0, have exponential function, also have logarithmic function in optical module Life Prediction Model formula, the optical module degradation model formed like this is step model.Concrete, actual current curve as shown in Figure 4, Figure 5 and Figure 6 and matched curve known, when the electric current of optical module arrives A point, the degradation model of optical module enters rapid degradation trend, matched curve and actual curve coincide, and namely when the degradation model of optical module enters rapid degradation trend, matched curve is the most accurate, now, the residual life of the optical module calculated is the most accurate.

Concrete, step 201a comprises the following steps:

A1, mean square deviation formula according to the equation two ends difference of optical module Life Prediction Model formula determination optical module Life Prediction Model formula.

This formula is: $\mathrm{\δ}=\frac{1}{M}\underset{i=M}{\overset{M-M_{\max }+1}{\mathrm{\Σ}}}{[I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n-I\left(t_i\right)]}^2$ Formula 2

Wherein i=M, M-1 ..., 3,2,1 is the time data of sampling and the numbering of current data at that time, and is represented by backward, and N is the number of times of iteration, and owing to the while of last current data being also the current data closest to present moment.In actual mechanical process, sample number M increases along with the continuous accumulation of sampled point.If but the MCU internal memory distributed is limited, such as internal memory tolerance limit maximum is M _max, the M closest to present moment so will be retained by the mode of deleting the early stage current data gathered _maxindividual gathered current data, makes i=M, M-1 ..., M-M _max+ 1.Then the time data t by recording before _iwith current data I (t _i) determine coefficient I ₀(T), a _nand b (T) _n(T), n=1,2,3 ..., the times N of N and iteration, and determining coefficient I ₀(T), a _nand b (T) _n(T) time, according to above-mentioned coefficient I ₀(T), a _nand b (T) _n(T) known with the relational expression of temperature T, determine coefficient I ₀(T), a _nand b (T) _n(T), namely determine in relational expression know

A2, obtained the coefficient of optical module Life Prediction Model formula by the mean square deviation formula of the equation two ends difference of optical module Life Prediction Model formula.

$\frac{\∂\mathrm{\δ}}{\∂I_0}=\frac{2}{M}\underset{i=M}{\overset{M-M_{\max }+1}{\mathrm{\Σ}}}[I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n-I\left(t_i\right)]=0$ Formula 3

$\frac{\∂\mathrm{\δ}}{\∂a_n}=\frac{2}{M}\underset{i=M}{\overset{M-M_{\max }+1}{\mathrm{\Σ}}}[I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n-I\left(t_i\right)]{t_i}^{-n}=0$ Formula 4

$\frac{\∂\mathrm{\δ}}{{\∂b}_n}=\frac{2}{M}\underset{i=M}{\overset{M-M_{\max }+1}{\mathrm{\Σ}}}[I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{b}_n\left(T\right){t_i}^n-I\left(t_i\right)]{t_i}^n=0$ Formula 5

Formula 3 as implied above, formula 4, formula 5 are to I according to the mean square deviation formula of the equation two ends difference of optical module Life Prediction Model formula ₀(T), a _nand b (T) _n(T) when asking local derviation to be zero respectively, gained formula.

Formula 3, formula 4, formula 5 are formed equation group, is solved the coefficient of optical module Life Prediction Model formula by Gaussian elimination method.

Coefficient is substituted into mean square deviation formula by 201b, optical module life predication apparatus, obtains the mean square deviation that this mean square deviation formula is corresponding.

201c, optical module life predication apparatus judge whether mean square deviation is less than default error margin.

201d, if the determination result is YES, then determine coefficient and the exponent number of optical module Life Prediction Model, and the coefficient of this optical module Life Prediction Model and exponent number substitution optical module Life Prediction Model formula are obtained optical module life prediction formula, this exponent number is the group number substituting into the electric current of this mean square deviation formula and the temperature of synchronization;

If judged result is no, then continue to gather the temperature of electric current under optical module operating state and synchronization, and according to the temperature of the electric current under all optical module operating states collected and synchronization, again substitute into mean square deviation formula and carry out mean square deviation calculating; Until the mean square deviation calculated is less than default error margin.

Concrete, the process of step 201a to step 201d, actual matching from N=1 (electric current under namely utilizing one group of optical module in working order and the temperature of synchronization are to determine the coefficient of optical module Life Prediction Model formula), first follows the mean square deviation δ calculated the error margin δ preset in the mean square deviation formula of the equation two ends difference of optical module Life Prediction Model formula ₀(such as δ ₀=1%) compare, if δ < is δ ₀, so just stop fit procedure also utilizing the I this time calculated ₀(T), a ₁(T), b ₁(T) substitute in optical module Life Prediction Model formula, obtain optical module life prediction formula; If δ > is δ ₀, then need to make N=N+1, and by N+1 group optical module in working order under electric current and the temperature of synchronization substitutes into formula 3, formula 4, formula 5 solve a respectively _n+1(T), b _n+1and I (T) ₀(T), n=1,2,3 ..., N.Then a will determined _n+1(T), b _n+1and I (T) ₀(T) recalculate mean square deviation δ in substitution formula 2, repeat this process until the δ < δ that satisfies condition always ₀till.Secondly, if N is to reach the upper limit N pre-set _max(such as N _max=5) condition of convergence δ < δ cannot also be met ₀, so judge matching failure.

202, optical module life predication apparatus judges whether the electric current collected meets the early warning electric current preset, and when electric current meets early warning electric current, the temperature of electric current and synchronization is substituted into the service time that optical module life prediction formula obtains optical module.

Concrete, when gathering optical module electric current lower in working order and the temperature under synchronization, monitoring the electric current collected, once the electric current collected reaches early warning electric current, just notifying that optical module life predication apparatus carries out the calculating of optical module residual life.

Optionally, can also comprise after step 202:

Threshold temperature corresponding to threshold current that the threshold current preset and this are preset is substituted into the life time that optical module life prediction formula obtains optical module by 203a, optical module life predication apparatus.

The difference of 203b, optical module life predication apparatus time mathematic(al) expectation and service time obtains the residual life of optical module.

Wherein, after determining optical module life prediction formula, first to determine that a threshold current (i.e. use by the end-of-life electric current of optical module _endrepresent) and threshold temperature (namely the end-of-life electric current of optical module is in the threshold temperature of correspondence), and optical module initial current is by initial measurement electric current I _thwith modulated current I _mcomposition, and when the electric current that optical module is lower in working order reaches end-of-life electric current, the total current of maintenance equal-wattage can than initial total current rising 50%, i.e. I _end+ I _m=1.5 (I _th+ I _m), then the end-of-life electric current of optical module can be set to I _end=1.5I _th+ 0.5I _m, and initial measurement electric current I _thwith modulated current I _mcan detect, so the end-of-life electric current of optical module also can be determined before the computation, and threshold temperature corresponding to the end-of-life electric current of this optical module also pre-sets.After determining threshold current and threshold temperature, also to determine that early warning electric current (uses I _warnrepresent) scope, and early warning electric current is all generally the electric currents after optical module enters rapid degradation trend, general early warning electric current is set to I here _warn=(0.2 ~ 0.6) I _endbut this scope is not certain, also can set according to the situation of actual light module.

Concrete, suppose that (only the temperature of substitution one group of electric current and synchronization just can determine the coefficient I of optical module Life Prediction Model formula as N=1 ₀(T), a ₁and b (T) ₁(T)), its optical module life prediction formula can be:

I (t)=I ₀(T)+a ₁(T) t ^-1+ b ₁(T) t ¹formula 6

Then according to radical formula, t can be obtained _warnand t _end, concrete formula is as follows:

$t_{\mathrm{warn}}=\frac{(I_{\mathrm{warn}}-I_0\left(T_{\mathrm{warn}}\right))\&PlusMinus;\sqrt{{(I_{\mathrm{warn}}-I_0\left(T_{\mathrm{warn}}\right))}^2-4b_1\left(T_{\mathrm{warn}}\right)a_1\left(T_{\mathrm{warn}}\right)}}{{2b}_1\left(T_{\mathrm{warn}}\right)}$ Formula 7

$t_{\mathrm{end}}=\frac{(I_{\mathrm{end}}-I_0\left(T_{\mathrm{end}}\right))\&PlusMinus;\sqrt{{(I_{\mathrm{end}}-I_0\left(T_{\mathrm{end}}\right))}^2-{4b}_1\left(T_{\mathrm{end}}\right)a_1\left(T_{\mathrm{end}}\right)}}{{2b}_1\left(T_{\mathrm{end}}\right)}$ Formula 8

Therefore residual life Δ T: Δ T=t can just be obtained _end-t _warn

Optionally, after the residual life calculating optical module, also comprise:

204, optical module life predication apparatus is when the residual life of optical module exceedes default threshold value, then send early warning information.

Wherein, the visualization interface that above-mentioned early warning information can be arranged by webmaster end shows notice residual life situation, instructs user to change the optical module of inefficacy in advance.

The optical module life-span prediction method that embodiments of the invention provide, by the temperature of the electric current under the optical module collected operating state and synchronization being substituted in the optical module life prediction formula determined, calculate the residual life of optical module, thus the time that the optical module that can give warning in advance more accurately lost efficacy, guide product changes optical module in advance.

The invention provides a kind of optical module life predication apparatus, this optical module life predication apparatus can think webmaster end equipment or the unit that is integrated on MCU or webmaster end or module for MCU, also, as shown in Figure 7, this optical module life predication apparatus 3 comprises:

Data acquisition unit 31, for gathering the temperature of electric current under optical module operating state and synchronization;

Useful life computing unit 32, for judging whether the electric current that data acquisition unit 31 collects meets the early warning electric current preset, when electric current meets early warning electric current, the temperature of electric current and synchronization is substituted into the service time that optical module life prediction formula obtains this optical module.

Optionally, as shown in Figure 8, this optical module life predication apparatus 3 also comprises:

Coefficient acquiring unit 33, temperature for the electric current under at least one group of optical module operating state being collected by data acquisition unit 31 and synchronization substitutes into the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set respectively, obtain the coefficient of optical module Life Prediction Model formula, wherein this optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{b}_n\left(T\right){t_i}^n;$

Wherein, T representation temperature, t _irepresent the time, I (t _i) represent t _ithe electric current that moment is corresponding, I ₀(T) be the constant term of closing with temperature T-phase, a _nand b (T) _n(T) be the coefficient closed with temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$ for I _o(T) corresponding coefficient, for a _n(T) corresponding coefficient, for b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

Mean square deviation computing unit 34, substitutes into mean square deviation formula for the coefficient obtained by coefficient acquiring unit 33, obtains the mean square deviation that mean square deviation formula is corresponding;

Mean square deviation judging unit 35, for judging whether the mean square deviation that mean square deviation computing unit 34 calculates is less than default error margin;

Formula acquiring unit 36, if the result judged for mean square deviation judging unit 35 is yes, determine coefficient and the exponent number of optical module Life Prediction Model, and the coefficient of optical module Life Prediction Model and exponent number substitution optical module Life Prediction Model formula are obtained optical module life prediction formula, this exponent number is the group number substituting into the electric current of mean square deviation formula and the temperature of synchronization;

Further alternative, if the result that mean square deviation judging unit 35 judges is no, electric current then under data acquisition unit 31 continuation collection optical module operating state and the temperature of synchronization, and the temperature of electric current under all optical module operating states collected according to data acquisition unit 31 and synchronization, again substitute into mean square deviation formula and carry out mean square deviation calculating; Until the mean square deviation that mean square deviation computing unit 34 calculates is less than default error margin.

Optionally, this optical module life predication apparatus 3 also comprises:

Life time computing unit 37, the optical module life prediction formula obtained for default threshold current and threshold temperature corresponding to default threshold current being substituted into formula acquiring unit 36 obtains the life time of optical module;

Residual life acquiring unit 38, obtains the residual life of optical module for the life time of time calculating unit 37 calculating mathematic(al) expectation and the difference of the service time of computing unit 32 calculating in useful life.

Optionally, this optical module life predication apparatus 3 also comprises:

Prewarning unit 39, for when the residual life of the optical module that residual life acquiring unit 38 obtains exceedes default threshold value, then sends early warning information.

The optical module life predication apparatus that embodiments of the invention provide, by the temperature of the electric current under the optical module collected operating state and synchronization being substituted in the optical module life prediction formula determined, calculate the residual life of optical module, thus the time that the optical module that can give warning in advance more accurately lost efficacy, guide product changes optical module in advance.

The structural representation of a kind of optical module life predication apparatus that Fig. 9 provides for another embodiment of the present invention, this optical module life predication apparatus 4 can for MCU, also can be webmaster end equipment or the unit be integrated on MCU or webmaster end or module, this optical module life predication apparatus 4 comprises at least one processor 41, memory 42, communication bus 43 and at least one communication interface 44.

Wherein, communication bus 43 is for the connection that realizes between said modules and communicate, and this communication interface 44 is for being connected with external equipment and communicating.

Store the program code needing to perform in memory 42, these program codes specifically can comprise: data acquisition unit 421 and useful life computing unit 422.

Processor 41, for performing the unit stored in described memory 42, when said units is performed by described processor 41, realizes following function:

Data acquisition unit 421, for gathering the temperature of electric current under optical module operating state and synchronization;

Useful life computing unit 422, for judging whether the electric current that data acquisition unit 421 collects meets the early warning electric current preset, when electric current meets early warning electric current, the temperature of electric current and synchronization is substituted into the service time that optical module life prediction formula obtains this optical module.

Optionally, the program code stored in memory 42 specifically also comprises: coefficient acquiring unit 423, mean square deviation computing unit 424, mean square deviation judging unit 425 and formula acquiring unit 426, wherein:

Coefficient acquiring unit 423, temperature for the electric current under at least one group of optical module operating state being collected by data acquisition unit 421 and synchronization substitutes into the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set respectively, obtain the coefficient of optical module Life Prediction Model formula, wherein this optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{b}_n\left(T\right){t_i}^n;$

Wherein, T representation temperature, t _irepresent the time, I (T _i) represent t _ithe electric current that moment is corresponding, I ₀(T) be the constant term of closing with temperature T-phase, a _nand b (T) _n(T) be the coefficient closed with temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$ for I _o(T) corresponding coefficient, for a _n(T) corresponding coefficient, for b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

Mean square deviation computing unit 424, substitutes into mean square deviation formula for the coefficient obtained by coefficient acquiring unit 423, obtains the mean square deviation that mean square deviation formula is corresponding;

Mean square deviation judging unit 425, for judging whether the mean square deviation that mean square deviation computing unit 424 calculates is less than default error margin;

Formula acquiring unit 426, if the result judged for mean square deviation judging unit 425 is yes, determine coefficient and the exponent number of optical module Life Prediction Model, and the coefficient of optical module Life Prediction Model and exponent number substitution optical module Life Prediction Model formula are obtained optical module life prediction formula, this exponent number is the group number substituting into the electric current of mean square deviation formula and the temperature of synchronization;

Further alternative, if the result that mean square deviation judging unit 425 judges is no, electric current then under data acquisition unit 421 continuation collection optical module operating state and the temperature of synchronization, and the temperature of electric current under all optical module operating states collected according to data acquisition unit 421 and synchronization, again substitute into mean square deviation formula and carry out mean square deviation calculating; Until the mean square deviation that mean square deviation computing unit 424 calculates is less than default error margin.

Optionally, the program code stored in memory 42 specifically also comprises: life time computing unit 427 and residual life acquiring unit 428, wherein:

Life time computing unit 427, the optical module life prediction formula obtained for default threshold current and threshold temperature corresponding to default threshold current being substituted into formula acquiring unit 426 obtains the life time of optical module;

Residual life acquiring unit 428, obtains the residual life of optical module for the life time of time calculating unit 427 calculating mathematic(al) expectation and the difference of the service time of computing unit 422 calculating in useful life.

Optionally, the program code stored in memory 42 specifically also comprises: prewarning unit 429, wherein:

Prewarning unit 429, for when the residual life of the optical module that residual life acquiring unit 428 obtains exceedes default threshold value, then sends early warning information.

The optical module life predication apparatus that embodiments of the invention provide, by the temperature of the electric current under the optical module collected operating state and synchronization being substituted in the optical module life prediction formula determined, calculate the residual life of optical module, thus the optical module that can give warning in advance lost efficacy, guide product changed optical module in advance.

The optical module life predication apparatus that embodiments of the invention provide, by the temperature of the electric current under the optical module collected operating state and synchronization being substituted in the optical module life prediction formula determined, calculate the residual life of optical module, thus the time that the optical module that can give warning in advance more accurately lost efficacy, guide product changes optical module in advance.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims (8)

1. an optical module life-span prediction method, is characterized in that, comprising:

Optical module life predication apparatus gathers the temperature of electric current under described optical module operating state and synchronization;

Judge whether the electric current collected meets the early warning electric current preset, when described electric current meets early warning electric current, the temperature of described electric current and synchronization is substituted into the service time that optical module life prediction formula obtains described optical module;

Wherein, the electric current that described judgement collects also comprises before whether meeting the early warning electric current preset:

The temperature of the electric current under optical module operating state described at least one group that collects and synchronization is substituted into respectively the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\&Sigma;}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\&Sigma;}}{b}_n\left(T\right){t_i}^n;$

Described coefficient is substituted into described mean square deviation formula, obtains the mean square deviation that described mean square deviation formula is corresponding;

Judge whether described mean square deviation is less than default error margin;

If the determination result is YES, then determine coefficient and the exponent number of described optical module Life Prediction Model, and the coefficient of described optical module Life Prediction Model and exponent number are substituted into described optical module Life Prediction Model formula and obtain described optical module life prediction formula, described exponent number is the group number substituting into the described electric current of described mean square deviation formula and the temperature of synchronization;

Wherein, described T representation temperature, described t _irepresent the time, described I (t _i) represent described t _ithe electric current that moment is corresponding, described I ₀(T) be the constant term of closing with described temperature T-phase, described a _n(T) with described b _n(T) be the coefficient closed with described temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of described temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\&Sigma;}}{d}_l^{b_n}{T}^l,I_0\left(T\right)=\underset{l=0}{\overset{L}{\&Sigma;}}{d}_l^{I_0}{T}^l,a_n\left(T\right)=\underset{l=0}{\overset{L}{\&Sigma;}}{d}_l^{a_n}{T}^l,d_l^{I_0}$ For described I _o(T) corresponding coefficient, for described a _n(T) corresponding coefficient, for described b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

2. method according to claim 1, is characterized in that, described judge whether described mean square deviation is less than default error margin after, also comprise:

If judged result is no, electric current then under the described optical module operating state of continuation collection and the temperature of synchronization, and according to the temperature of the electric current under all described optical module operating state collected and synchronization, again substitute into described mean square deviation formula and carry out mean square deviation calculating;

Until the mean square deviation calculated is less than described default error margin.

3. method according to claim 1 and 2, is characterized in that, when described electric current meets early warning electric current, described method also comprises:

Default threshold current and threshold temperature corresponding to described default threshold current are substituted into the life time that optical module life prediction formula obtains described optical module;

The difference calculating described life time and described service time obtains the residual life of described optical module.

4. method according to claim 3, is characterized in that, described method also comprises:

When the residual life of described optical module exceedes default threshold value, then send early warning information.

5. an optical module life predication apparatus, is characterized in that, comprising:

Data acquisition unit, for gathering the temperature of electric current under described optical module operating state and synchronization;

Useful life computing unit, for judging whether the electric current that described data acquisition unit acquires arrives meets the early warning electric current preset, when described electric current meets early warning electric current, the temperature of described electric current and synchronization is substituted into the service time that optical module life prediction formula obtains described optical module;

Described device also comprises:

Coefficient acquiring unit, for by described data acquisition unit acquires at least one group described in the temperature of electric current under optical module operating state and synchronization substitute into the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula pre-set respectively, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\&Sigma;}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\&Sigma;}}{b}_n\left(T\right){t_i}^n;$

Mean square deviation computing unit, substitutes into described mean square deviation formula for the described coefficient obtained by described coefficient acquiring unit, obtains the mean square deviation that described mean square deviation formula is corresponding;

Mean square deviation judging unit, for judging whether the described mean square deviation that described mean square deviation computing unit calculates is less than default error margin;

Formula acquiring unit, if the result judged for described mean square deviation judging unit is yes, determine coefficient and the exponent number of described optical module Life Prediction Model, and the coefficient of described optical module Life Prediction Model and exponent number are substituted into described optical module Life Prediction Model formula and obtain described optical module life prediction formula, described exponent number is substitute into the described electric current of described mean square deviation formula and the group number of the temperature of same time;

Wherein, described T representation temperature, described t _irepresent the time, described I (t _i) represent described t _ithe electric current that moment is corresponding, described I ₀(T) be the constant term of closing with described temperature T-phase, described a _n(T) with described b _n(T) be the coefficient closed with described temperature T-phase, wherein, I _o(T), a _nand b (T) _n(T) meet with the relation of described temperature T $b_n\left(T\right)=\underset{l=0}{\overset{L}{\&Sigma;}}{d}_l^{b_n}{T}^l,I_0\left(T\right)=\underset{l=0}{\overset{L}{\&Sigma;}}{d}_l^{I_0}{T}^l,a_n\left(T\right)=\underset{l=0}{\overset{L}{\&Sigma;}}{d}_l^{a_n}{T}^l,d_l^{I_0}$ For described I _o(T) corresponding coefficient, for described a _n(T) corresponding coefficient, for described b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

6. device according to claim 5, is characterized in that, described device also comprises:

If the result that described mean square deviation judging unit judges is no, electric current then under the described optical module operating state of described data acquisition unit continuation collection and the temperature of synchronization, and the temperature of electric current under all described optical module operating state arrived according to described data acquisition unit acquires and synchronization, again substitute into described mean square deviation formula and carry out mean square deviation calculating; Until the mean square deviation that described mean square deviation computing unit calculates is less than described default error margin.

7. the device according to claim 5 or 6, is characterized in that, described device also comprises:

Life time computing unit, the optical module life prediction formula obtained for default threshold current and threshold temperature corresponding to described default threshold current being substituted into described formula acquiring unit obtains the life time of described optical module;

Residual life acquiring unit, the difference for calculating the described life time that described life time computing unit calculates and the described service time that described useful life, computing unit calculated obtains the residual life of described optical module.

8. device according to claim 7, is characterized in that, described device also comprises:

Prewarning unit, for when the residual life of the described optical module that described residual life acquiring unit obtains exceedes default threshold value, then sends early warning information.