CN103152095A - Life forecast method and life forecast device of optical module - Google Patents

Abstract

The invention provides a life forecast method and a life forecast device of an optical module and relates to the technical field of photoelectron. The life forecast method and the life forecast device of the optical module can accurately forecast the date of termination of the optical module and guide that the optical module of the product is replaced in advance. The forecast method includes the following steps of collecting the current and the temperature in the same moment of the optical module under the working condition, judging whether the collected current satisfies an early-warning current, and putting the current and the temperature at the same moment in a life forecast formula of the optical module to obtain the service time of the optical module when the collected current satisfies the early-warning current. The life forecast method and the life forecast device of the optical module are applied to the life forecast of the optical module.

Description

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

Technical field

The present invention relates to the photoelectron technology field, relate in particular to a kind of optical module life-span prediction method and device.

Background technology

Optical module is one of core component of networking products, is mainly the opto-electronic conversion that communicates business, will cause the interruption of Network in case optical module loses efficacy.Therefore, in order not affect the transmission of Network, generally in the built-in register of optical module, alarming threshold is set.This alarming threshold is the thresholding of laser works electric current, namely just triggers alarm when module detects when electric current surpasses thresholding, realizes the alarm effect.

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

Summary of the invention

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

Electric current under the described optical module operating state of optical module life predication apparatus collection and the temperature of synchronization;

Whether the electric current that collects of judgement satisfies default early warning electric current, when described electric current satisfies the early warning electric current, and the service time that the temperature substitution optical module life prediction formula of described electric current and synchronization is obtained described optical module.

In the possible implementation of the first, according to first aspect, the electric current that judgement collects also comprises before whether satisfying default early warning electric current:

With the temperature of the electric current under at least one group of described optical module operating state that collects and the synchronization mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution respectively, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

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

With the described mean square deviation formula of described coefficient substitution, obtain mean square deviation corresponding to described mean square deviation formula;

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

If judgment result is that be, determine coefficient and the exponent number of described optical module Life Prediction Model, and coefficient and the described optical module Life Prediction Model of the exponent number substitution formula of described optical module Life Prediction Model obtained described optical module life prediction formula, described exponent number is the group number of the temperature of the described electric current of the described mean square deviation formula of substitution and synchronization;

Wherein, described T representation temperature, described t _iRepresent the time, described I (t _i) represent described t _iThe electric current that the moment is corresponding, described I ₀(T) be the constant term relevant to described temperature T, described a _n(T) with described b _n(T) be the coefficient relevant to described temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with described temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{a_n}{T}^l,$

Be described I _o(T) corresponding coefficient,

Be described a _n(T) corresponding coefficient, Be described b _n(T) corresponding coefficient, and n ∈ (1,2,3......N), l ∈ (0,1,2,3......L).

In the possible implementation of the second, the implementation possible according to the first describedly judges that described mean square deviation whether less than after default error margin, also comprises:

If the determination result is NO, continue to gather electric current under described optical module operating state and the temperature of synchronization, and according to the electric current under all described optical module operating states that collect and the temperature of synchronization, the described mean square deviation formula of substitution carries out mean square deviation calculating again;

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

In the third possible implementation, in conjunction with first aspect or possible implementation or the possible implementation of the second of the first, when described electric current satisfied the early warning electric current, described method also comprised:

The life time that default threshold current and described default threshold temperature substitution optical module life prediction formula corresponding to threshold current are obtained described optical module;

The difference of calculating described life time and described service time is obtained 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 surpasses default threshold value, send early warning information.

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

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

Useful life computing unit, be used for judging whether the electric current that described data acquisition unit collects satisfies default early warning electric current, when described electric current satisfies the early warning electric current, the service time that the temperature substitution optical module life prediction formula of described electric current and synchronization is obtained described optical module.

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

The coefficient acquiring unit, electric current under at least one group of described optical module operating state that is used for described data acquisition unit is collected and the temperature of synchronization be the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution respectively, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

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

The mean square deviation computing unit, the described mean square deviation formula of described coefficient substitution for described coefficient acquiring unit is obtained obtains mean square deviation corresponding to described mean square deviation formula;

The mean square deviation judging unit is used for judging that whether the described mean square deviation of described mean square deviation computing unit calculating is less than default error margin;

The formula acquiring unit, if it is yes being used for the result of described mean square deviation judgment unit judges, determine coefficient and the exponent number of described optical module Life Prediction Model, and coefficient and the described optical module Life Prediction Model of the exponent number substitution formula of described optical module Life Prediction Model obtained described optical module life prediction formula, described exponent number is the described electric current of the described mean square deviation formula of substitution 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 the moment is corresponding, described I ₀(T) be the constant term relevant to described temperature T, described a _n(T) with described b _n(T) be the coefficient relevant to described temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with described temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\Σ}}}{d}_l^{a_n}{T}^l,$ Be described I _o(T) corresponding coefficient, Be described a _n(T) corresponding coefficient,

Be described b _n(T) corresponding coefficient, and n ∈ (1,2,3......N), l ∈ (0,1,2,3......L).

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

If the result of described mean square deviation judgment unit judges is no, described data acquisition unit continues to gather electric current under described optical module operating state and the temperature of synchronization, and the electric current under all described optical module operating states that collect according to described data acquisition unit and the temperature of synchronization, the described mean square deviation formula of substitution carries out mean square deviation and calculates again; Until the mean square deviation that described mean square deviation computing unit is calculated is less than described default error margin.

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

The life time computing unit, be used for will be default threshold current and the optical module life prediction formula that obtains of the described default described formula acquiring unit of threshold temperature substitution corresponding to the threshold current life time that obtains described optical module;

The residual life acquiring unit is used for calculating the described life time of described life time computing unit calculating and the residual life that the difference of the described described service time that computing unit calculates in useful life is obtained described optical module.

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

Prewarning unit when the residual life that is used for the described optical module that obtains when described residual life acquiring unit surpasses the threshold value of presetting, is sent early warning information.

Optical module life-span prediction method and device that embodiments of the invention provide, in the definite optical module life prediction formula of the temperature substitution of the electric current under the optical module operating state that will collect and synchronization, calculate the residual life of optical module, thereby the time that the optical module that can give warning in advance more accurately lost efficacy, guide product is changed optical module in advance.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

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, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Optical module is one of core component of networking products, its major function is the opto-electronic conversion that communicates business, if losing efficacy, optical module will cause the interruption of Network, therefore, in advance the residual life of optical module carried out early warning, can reduce because optical module loses efficacy making communication service interrupt the accident that causes.And the temperature that embodiments of the invention are exactly electric current by detection laser and synchronization is predicted the residual life of optical module.Wherein, with reference to shown in Figure 1, optical module 1 is by laser 11, receives light detection chip 12, the first resistance (R1) 13, the second resistance (R2) 14, micro-control unit (Micro Control Unit, be called for short MCU) 15 and outside product webmaster end equipment 16 form, wherein, above-mentioned MCU is the control device in optical module, can carry out analog-to-digital conversion to the data that detect, and keeps the luminous power output of optical module constant by the electric current of controlling laser.

The concrete structure in conjunction with above-mentioned optical module forms, the operation principle of optical module is: light sends from laser, do opto-electronic conversion by a light detection chip, then the electric current that obtains is sampled through the second resistance (R2), carrying out the negative feedback luminous power through MCU controls, flow through the electric current of laser by control, keep constant luminous power output.when laser is deteriorated, for guaranteeing constant luminous power output, the operating current that flows through the first resistance (R1) can constantly increase, and the electric current of different time carries out the Fitting Calculation residual life inside all can being recorded in MCU, at last the residual life value is fed back to the webmaster end, reported the situation of the residual life of this optical module by the webmaster end, perhaps, also the predicting residual useful life model formation can be embedded in the software of installing in the webmaster end, by gathering the laser works electric current that records in MCU, calculate residual life and report the residual life of this optical module at the webmaster end, the optical module life predication apparatus that embodiments of the invention provide can be MCU, also can be webmaster end equipment, perhaps be integrated in unit or module on MCU or webmaster end, its concrete form the present invention do not limit, can realize that the method that embodiments of the invention provide is as the criterion, concrete structure and operation principle based on above-mentioned optical module, embodiments of the invention provide a kind of optical module life-span prediction method, and 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, electric current under the optical module operating state that collects in step 201 is that the MCU in optical module obtains according to voltage and this first resistance (R1) of the first resistance (R1) of detecting, and the temperature of electric current under synchronization under the above-mentioned optical module operating state that collects in step 201 is to detect by the temperature sensor in the MCU of optical module.

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

Electric current under at least one group of optical module operating state that 201a, optical module life predication apparatus will collect and the temperature of synchronization be the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution respectively, obtain the coefficient of optical module Life Prediction Model formula, wherein this optical module Life Prediction Model formula is:

$I\left(t_i\right)=I_0\left(T\right)+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{a}_n\left(T\right){t_i}^{-n}+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{b}_n\left(T\right){t_i}^{\mathrm{<figure-callout\; id="1"\; label="n\; Formula"\; filenames="HDA00002792186200041.png"\; state="\{\{state\}\}">n</figure-callout>}}$ Formula 1

Wherein, T representation temperature, t _iRepresent the time, I (t _i) represent t _iThe electric current that the moment is corresponding, I ₀(T) be the constant term relevant to temperature T, a _n(T) and b _n(T) be the coefficient relevant to temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$

Be I _o(T) corresponding coefficient,

Be a _n(T) corresponding coefficient,

Be b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

In addition, work as a _n(T) be at 0 o'clock, 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) be at 0 o'clock, 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) ≠ 0 o'clock, in optical module Life Prediction Model formula, exponential function is arranged, logarithmic function is also arranged, the optical module degradation model that forms like this is step model.Concrete, as Fig. 4, Fig. 5 and actual current curve shown in Figure 6 and matched curve as can be known, when the electric current of optical module arrives the A point, the degradation model of optical module enters quick degradation trend, matched curve and actual curve coincide, and namely when the degradation model of optical module entered quick degradation trend, matched curve was the most accurate, the residual life of the optical module of calculating at this moment, is the most accurate.

Concrete, step 201a comprises the following steps:

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

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

I=M wherein, M-1 ..., 3,2,1st, the time data of sampling and the numbering of the current data under this time and represent by backward that N is the number of times of iteration, and because last current data is also simultaneously near the current data of present moment.In actual mechanical process, sample number M is along with the continuous accumulation of sampled point increases.If but the MCU internal memory that distributes is limited, such as internal memory tolerance limit maximum is M _max, the mode of current data that so will be by deleting early stage collection keeps the M near present moment _maxThe individual current data that gathers makes i=M, M-1 ..., M-M _max+ 1.Then the time data t of record before passing through _iWith current data I (t _i) come Coefficient of determination I ₀(T), a _n(T) and b _n(T), n=1,2,3 ..., the times N of N and iteration, and at Coefficient of determination I ₀(T), a _n(T) and b _n(T) time, according to above-mentioned coefficient I ₀(T), a _n(T) and b _n(T) with the relational expression of temperature T as can be known, Coefficient of determination I ₀(T), a _n(T) and b _n(T), be namely to determine in relational expression

Know

The mean square deviation formula of a2, the equation two ends difference by optical module Life Prediction Model formula obtains the coefficient of optical module Life Prediction Model formula.

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

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

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

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

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

201b, optical module life predication apparatus obtain mean square deviation corresponding to this mean square deviation formula with coefficient substitution mean square deviation formula.

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

If 201d judgment result is that be, determine coefficient and the exponent number of optical module Life Prediction Model, and coefficient and the exponent number substitution optical module Life Prediction Model formula of this optical module Life Prediction Model obtained optical module life prediction formula, this exponent number is the group number of the temperature of the electric current of this mean square deviation formula of substitution and synchronization;

If the determination result is NO, continue to gather electric current under the optical module operating state and the temperature of synchronization, and according to the electric current under all optical module operating states that collect and the temperature of synchronization, the formula of substitution mean square deviation again carries out mean square deviation and calculates; Until the mean square deviation of calculating is less than default error margin.

Concrete, step 201a is to the process of step 201d, actually begin match (namely utilizing electric current and the temperature of the synchronization coefficient of determining optical module Life Prediction Model formula of one group of optical module under in working order) from N=1, at first in the mean square deviation formula of the equation two ends of optical module Life Prediction Model formula difference with the mean square deviation δ that calculates with default error margin δ ₀(δ for example ₀=1%) compare, if δ＜δ ₀, so just stop fit procedure and utilize the I that this time calculates ₀(T), a ₁(T), b ₁(T) in substitution optical module Life Prediction Model formula, obtain optical module life prediction formula; If δ＞δ ₀, need to make N=N+1, and with N+1 organize optical module under in working order electric current and temperature substitution formula 3, formula 4, the formula 5 of synchronization find the solution respectively a _n+1(T), b _n+1(T) and I ₀(T), n=1,2,3 ..., N.The a that then will determine _n+1(T), b _n+1(T) and I ₀(T) recomputate 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 have reached the upper limit N that sets in advance _max(such as N _max=5) also can't satisfy condition of convergence δ＜δ ₀, judge so the match failure.

202, whether the electric current that collects of optical module life predication apparatus judgement satisfies default early warning electric current, when electric current satisfies the early warning electric current, and the service time that the temperature substitution optical module life prediction formula of electric current and synchronization is obtained optical module.

Concrete, gathering optical module in working order when lower electric current and the temperature under synchronization, monitor the electric current that collects, in case the electric current that collects reaches the early warning electric current, just notify the optical module life predication apparatus to carry out the calculating of optical module residual life.

Optionally, can also comprise after step 202:

203a, optical module life predication apparatus obtain default threshold current and this default threshold temperature substitution optical module life prediction formula corresponding to threshold current the life time of optical module.

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

Wherein, after having determined optical module life prediction formula, to determine that at first a threshold current (is the end-of-life electric current of optical module, uses _endRepresent) and threshold temperature (being that the end-of-life electric current of optical module is in the threshold temperature of correspondence), and the optical module initial current is by the initial measurement electric current I _thWith modulated current I _mForm, and when the electric current under in working order reached the end-of-life electric current when optical module, the total current of keeping equal-wattage can be than initial total current rising 50%, i.e. I _end+ I _m=1.5 (I _th+ I _m), the end-of-life electric current of optical module can be set to I _end=1.5I _th+ 0.5I _m, and the initial measurement electric current I _thWith modulated current I _mCan detect, so the end-of-life electric current of optical module also can be definite before calculating, and the threshold temperature corresponding to end-of-life electric current of this optical module also sets in advance.After having determined threshold current and threshold temperature, to determine that also the early warning electric current (uses I _WarnRepresent) scope, and the early warning electric current is all generally the electric currents after optical module enters quick degradation trend, generally the early warning electric current is set to I here _Warn=(0.2～0.6) I _endBut this scope is not certain, can set according to the situation of actual light module yet.

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

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

Can according to radical formula, obtain t _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 just can obtain residual life Δ T: Δ T=t _end-t _Warn

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

204, the optical module life predication apparatus when the residual life of optical module surpasses default threshold value, sends early warning information.

Wherein, above-mentioned early warning information can be come by the visualization interface of webmaster end setting display notification residual life situation, and guides user is changed the optical module of inefficacy in advance.

The optical module life-span prediction method that embodiments of the invention provide, in the definite optical module life prediction formula of the temperature substitution of the electric current under the optical module operating state that will collect and synchronization, calculate the residual life of optical module, thereby the time that the optical module that can give warning in advance more accurately lost efficacy, guide product is changed optical module in advance.

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

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

Useful life, computing unit 32, be used for judging whether the electric current that data acquisition unit 31 collects satisfies default early warning electric current, when electric current satisfies the early warning electric current, the service time that the temperature substitution optical module life prediction formula of electric current and synchronization is obtained this optical module.

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

Coefficient acquiring unit 33, electric current under at least one group of optical module operating state that is used for data acquisition unit 31 is collected and the temperature of synchronization be the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution 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 the moment is corresponding, I ₀(T) be the constant term relevant to temperature T, a _n(T) and b _n(T) be the coefficient relevant to temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$

Be I _o(T) corresponding coefficient,

Be a _n(T) corresponding coefficient,

Be b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

Mean square deviation computing unit 34, the coefficient substitution mean square deviation formula for coefficient acquiring unit 33 is obtained obtains mean square deviation corresponding to mean square deviation formula;

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

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

Further alternative, if the result of mean square deviation judging unit 35 judgements is no, data acquisition unit 31 continues to gather electric current under the optical module operating states and the temperature of synchronization, and the electric current under all optical module operating states that collect according to data acquisition unit 31 and the temperature of synchronization, the formula of substitution mean square deviation again carries out mean square deviation and calculates; Until the mean square deviation that mean square deviation computing unit 34 is calculated is less than default error margin.

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

Life time computing unit 37, be used for will be default threshold current and the optical module life prediction formula that obtains of default threshold temperature substitution formula acquiring unit 36 corresponding to the threshold current life time that obtains optical module;

Residual life acquiring unit 38 is used for the residual life that life time that mathematic(al) expectation, time calculating unit 37 calculated and the difference of the service time that computing unit 32 calculates in useful life are obtained optical module.

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

Prewarning unit 39 when the residual life that is used for the optical module that obtains when residual life acquiring unit 38 surpasses the threshold value of presetting, is sent early warning information.

The optical module life predication apparatus that embodiments of the invention provide, in the definite optical module life prediction formula of the temperature substitution of the electric current under the optical module operating state that will collect and synchronization, calculate the residual life of optical module, thereby the time that the optical module that can give warning in advance more accurately lost efficacy, guide product is changed 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 for webmaster end equipment or be integrated in MCU or the webmaster end on unit 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 and the communication that realize between said modules, and this communication interface 44 is used for being connected with external equipment and communicating by letter.

The program code that in memory 42, storage need to be carried out, these program codes specifically can comprise: data acquisition unit 421 and useful life computing unit 422.

Processor 41 is used for carrying out the unit of described memory 42 storages, when said units is carried out by described processor 41, is achieved as follows function:

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

Useful life, computing unit 422, be used for judging whether the electric current that data acquisition unit 421 collects satisfies default early warning electric current, when electric current satisfies the early warning electric current, the service time that the temperature substitution optical module life prediction formula of electric current and synchronization is obtained this optical module.

Optionally, in memory 42, the program code of storage 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, electric current under at least one group of optical module operating state that is used for data acquisition unit 421 is collected and the temperature of synchronization be the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution 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 the moment is corresponding, I ₀(T) be the constant term relevant to temperature T, a _n(T) and b _n(T) be the coefficient relevant to temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$

Be I _o(T) corresponding coefficient,

Be a _n(T) corresponding coefficient,

Be b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

Mean square deviation computing unit 424, the coefficient substitution mean square deviation formula for coefficient acquiring unit 423 is obtained obtains mean square deviation corresponding to mean square deviation formula;

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

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

Further alternative, if the result of mean square deviation judging unit 425 judgements is no, data acquisition unit 421 continues to gather electric current under the optical module operating states and the temperature of synchronization, and the electric current under all optical module operating states that collect according to data acquisition unit 421 and the temperature of synchronization, the formula of substitution mean square deviation again carries out mean square deviation and calculates; Until the mean square deviation that mean square deviation computing unit 424 is calculated is less than default error margin.

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

Life time computing unit 427, be used for will be default threshold current and the optical module life prediction formula that obtains of default threshold temperature substitution formula acquiring unit 426 corresponding to the threshold current life time that obtains optical module;

Residual life acquiring unit 428 is used for the residual life that life time that mathematic(al) expectation, time calculating unit 427 calculated and the difference of the service time that computing unit 422 calculates in useful life are obtained optical module.

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

Prewarning unit 429 when the residual life that is used for the optical module that obtains when residual life acquiring unit 428 surpasses the threshold value of presetting, is sent early warning information.

The optical module life predication apparatus that embodiments of the invention provide, in the definite optical module life prediction formula of the temperature substitution of the electric current under the optical module operating state that will collect and synchronization, calculate the residual life of optical module, thereby the optical module that can give warning in advance lost efficacy, and guide product is changed optical module in advance.

The optical module life predication apparatus that embodiments of the invention provide, in the definite optical module life prediction formula of the temperature substitution of the electric current under the optical module operating state that will collect and synchronization, calculate the residual life of optical module, thereby the time that the optical module that can give warning in advance more accurately lost efficacy, guide product is changed optical module in advance.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be completed by the hardware that program command is correlated with, aforesaid program can be stored in a computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in 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 (10)

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

Electric current under the described optical module operating state of optical module life predication apparatus collection and the temperature of synchronization;

Whether the electric current that collects of judgement satisfies default early warning electric current, when described electric current satisfies the early warning electric current, and the service time that the temperature substitution optical module life prediction formula of described electric current and synchronization is obtained described optical module.

2. method according to claim 1, is characterized in that, the electric current that judgement collects also comprises before whether satisfying default early warning electric current:

With the temperature of the electric current under at least one group of described optical module operating state that collects and the synchronization mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution respectively, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

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

With the described mean square deviation formula of described coefficient substitution, obtain mean square deviation corresponding to described mean square deviation formula;

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

If judgment result is that be, determine coefficient and the exponent number of described optical module Life Prediction Model, and coefficient and the described optical module Life Prediction Model of the exponent number substitution formula of described optical module Life Prediction Model obtained described optical module life prediction formula, described exponent number is the group number of the temperature of the described electric current of the described mean square deviation formula of substitution and synchronization;

Wherein, described T representation temperature, described t _iRepresent the time, described I (t _i) represent described t _iThe electric current that the moment is corresponding, described I ₀(T) be the constant term relevant to described temperature T, described a _n(T) with described b _n(T) be the coefficient relevant to described temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with described temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$ Be described I _o(T) corresponding coefficient,

Be described a _n(T) corresponding coefficient,

Be described b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

3. method according to claim 2, is characterized in that, describedly judges that described mean square deviation whether less than after default error margin, also comprises:

If the determination result is NO, continue to gather electric current under described optical module operating state and the temperature of synchronization, and according to the electric current under all described optical module operating states that collect and the temperature of synchronization, the described mean square deviation formula of substitution carries out mean square deviation calculating again;

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

4. according to claim 1～3 described methods of any one, is characterized in that, when described electric current satisfied the early warning electric current, described method also comprised:

The life time that default threshold current and described default threshold temperature substitution optical module life prediction formula corresponding to threshold current are obtained described optical module;

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

5. method according to claim 4, is characterized in that, described method also comprises: when the residual life of described optical module surpasses default threshold value, send early warning information.

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

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

Useful life computing unit, be used for judging whether the electric current that described data acquisition unit collects satisfies default early warning electric current, when described electric current satisfies the early warning electric current, the service time that the temperature substitution optical module life prediction formula of described electric current and synchronization is obtained described optical module.

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

The coefficient acquiring unit, electric current under at least one group of described optical module operating state that is used for described data acquisition unit is collected and the temperature of synchronization be the mean square deviation formula of the equation two ends difference of the optical module Life Prediction Model formula that sets in advance of substitution respectively, obtain the coefficient of described optical module Life Prediction Model formula, wherein said optical module Life Prediction Model formula is:

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

The mean square deviation computing unit, the described mean square deviation formula of described coefficient substitution for described coefficient acquiring unit is obtained obtains mean square deviation corresponding to described mean square deviation formula;

The mean square deviation judging unit is used for judging that whether the described mean square deviation of described mean square deviation computing unit calculating is less than default error margin;

The formula acquiring unit, if it is yes being used for the result of described mean square deviation judgment unit judges, determine coefficient and the exponent number of described optical module Life Prediction Model, and coefficient and the described optical module Life Prediction Model of the exponent number substitution formula of described optical module Life Prediction Model obtained described optical module life prediction formula, described exponent number is the described electric current of the described mean square deviation formula of substitution 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 the moment is corresponding, described I ₀(T) be the constant term relevant to described temperature T, described a _n(T) with described b _n(T) be the coefficient relevant to described temperature T, wherein, I _O(T), a _n(T) and b _n(T) relation with described temperature T satisfies $b_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{b_n}{T}^l,$ $I_0\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{I_0}{T}^l,$ $a_n\left(T\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{d}_l^{a_n}{T}^l,$

Be described I _o(T) corresponding coefficient,

Be described a _n(T) corresponding coefficient, Be described b _n(T) corresponding coefficient, n ∈ (1,2,3 ... N), l ∈ (0,1,2,3 ... L).

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

If the result of described mean square deviation judgment unit judges is no, described data acquisition unit continues to gather electric current under described optical module operating state and the temperature of synchronization, and the electric current under all described optical module operating states that collect according to described data acquisition unit and the temperature of synchronization, the described mean square deviation formula of substitution carries out mean square deviation and calculates again; Until the mean square deviation that described mean square deviation computing unit is calculated is less than described default error margin.

9. according to claim 6～8 described devices of any one, is characterized in that, described device also comprises:

The life time computing unit, be used for will be default threshold current and the optical module life prediction formula that obtains of the described default described formula acquiring unit of threshold temperature substitution corresponding to the threshold current life time that obtains described optical module;

The residual life acquiring unit is used for calculating the described life time of described life time computing unit calculating and the residual life that the difference of the described described service time that computing unit calculates in useful life is obtained described optical module.

10. device according to claim 9, is characterized in that, described device also comprises:

Prewarning unit when the residual life that is used for the described optical module that obtains when described residual life acquiring unit surpasses the threshold value of presetting, is sent early warning information.

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