CN105930603A - Construction method and apparatus for ESD excitation model - Google Patents

Abstract

The invention provides a construction method and apparatus for an ESD (Electro Static Discharge) excitation model. The method comprises the steps of determining a corresponding static discharge function according to a target static discharge mode corresponding to a to-be-constructed ESD excitation model; for the determined static discharge function, selecting at least two function values; and constructing the ESD excitation model corresponding to the static discharge function according to the at least two selected function values. According to the scheme, the corresponding static discharge function is determined through the target static discharge mode corresponding to the to-be-constructed ESD excitation model, the ESD excitation model can be constructed by utilizing the at least two function values selected from the static discharge function, and an actually generated ESD phenomenon does not need to be tested by utilizing a test instrument, so that a waveform as same as a real ESD phenomenon can be simulated and the construction efficiency of the ESD excitation model is improved.

Description

The construction method of a kind of ESD excitation model and device

Technical field

The present invention relates to technical field of electromagnetic compatibility, particularly to a kind of ESD (static discharge, Electro Static Discharge) construction method and the device of model are encouraged.

Background technology

ESD refers to that a certain amount of electric charge transfers to the process another object from an object.In ESD generating process High voltage, instantaneous large-current can be formed, produce powerful electrostatic field, and along with strong electromagnetic radiation, integrated circuit is brought Electrostatic Field Coupling strongly and electromagnetic radiation.Therefore, in IC design early stage, how to simulate existing with true ESD As identical waveform, become urgent problem.

Summary of the invention

Embodiments provide construction method and the device of a kind of ESD excitation model, existing with true ESD to construct As identical waveform.

First aspect, embodiments provides the construction method of a kind of static discharge ESD excitation model, including:

According to the target static discharge pattern that ESD to be built excitation model is corresponding, determine corresponding static discharge function；

For the described static discharge function determined, select at least two functional value；

According to the described at least two functional value selected, construct ESD corresponding to described static discharge function and encourage model.

Preferably, described determine corresponding static discharge function, including: include human body in described target static discharge pattern During static discharge pattern, following function is defined as the static discharge function that human body electro static discharge pattern is corresponding:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁For characterizing fast discharge current pulse The time of liter, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄For characterizing the persistent period of slow discharge current pulse, I₁For characterizing the amplitude of fast discharge current pulse, I₂Slow for characterizing The amplitude of discharge current pulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.

Preferably, described construct described static discharge function corresponding ESD excitation model before, farther include: Determine the simulation software for drawing ESD excitation model；Determine the target recognition form that described simulation software is corresponding；By described extremely Few two functional values are written as the simulation document that form is described target recognition form；

Described ESD corresponding to described static discharge function that construct encourages model, including: using described simulation document as swashing Encourage signal and import in described simulation software, utilize described simulation software to read each functional value, each letter that will read Numerical value is drawn in a coordinate system, obtains ESD corresponding to this static discharge function and encourages model.

Preferably, described described at least two functional value is written as emulation that form is described target recognition form literary composition Part, including: when described target recognition form includes txt form, create txt file, by described at least two functional value in institute Stating and carry out the arrangement of two files in txt file, first file and second file are expressed as the horizontal stroke of each functional value respectively Coordinate and vertical coordinate, txt file arrangement completed is as described simulation document.

Preferably, described described simulation document is imported in described simulation software as pumping signal before, enter one Step includes:

Determine the target unit of the abscissa that described simulation software is corresponding when drawing ESD excitation model, by described emulation In file, the unit of the independent variable that each functional value is corresponding is adjusted to described target unit.

Preferably, described construct described static discharge function corresponding ESD excitation model after, farther include:

Obtain in ESD standard the requirement of parameters in described target static discharge pattern；

According to the requirement obtained, the ESD excitation model constructed is verified, and when being verified, then characterize described Static discharge function is correct with described target static discharge pattern match.

Second aspect, embodiments provides the construction device of a kind of static discharge ESD excitation model, including:

First determines unit, for the target static discharge pattern corresponding according to ESD to be built excitation model, determines corresponding Static discharge function, and described static discharge function is exported to select unit；

Described selection unit, for for the described static discharge function determined, selects at least two functional value, and by institute State at least two functional value to export to construction unit；

Described construction unit, for according to the described at least two functional value selected, constructing described static discharge function Corresponding ESD encourages model.

Preferably, described first determines unit, specifically for including that static electricity on human body is put in described target static discharge pattern During power mode, following function is defined as the static discharge function that human body electro static discharge pattern is corresponding:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁For characterizing fast discharge current pulse The time of liter, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄For characterizing the persistent period of slow discharge current pulse, I₁For characterizing the amplitude of fast discharge current pulse, I₂Slow for characterizing The amplitude of discharge current pulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.

Preferably, farther include:

Second determines unit, for determining the simulation software for drawing ESD excitation model, and determines described simulation software Corresponding target recognition form, exports described target recognition form to converting unit；

Described converting unit, is the imitative of described target recognition form for described at least two functional value is written as form True file；

Described construction unit, specifically for described simulation document is imported in described simulation software as pumping signal, Utilize described simulation software to read each functional value, each functional value read is drawn in a coordinate system, obtains The ESD that this static discharge function is corresponding encourages model.

Preferably, farther include:

3rd determines unit, for determining that described simulation software is at the mesh drawing abscissa corresponding when ESD encourages model Mark unit, and described target unit is exported to adjustment unit；

Described adjustment unit, for being adjusted to the unit of independent variable corresponding for each functional value in described simulation document Described target unit.

Preferably, described converting unit, specifically for when described target recognition form includes txt form, create txt literary composition Part, carries out two file arrangements, first file and second file in described txt file by described at least two functional value Being expressed as abscissa and the vertical coordinate of each functional value respectively, txt file arrangement completed is as described simulation document；

Preferably, farther include:

Acquiring unit, for obtaining in ESD standard the requirement of parameters in described target static discharge pattern；

Authentication unit, for verifying, according to the requirement obtained, the ESD excitation model constructed, and is being verified Time, then characterize described static discharge function correct with described target static discharge pattern match.

Embodiments provide construction method and the device of a kind of ESD excitation model, by ESD excited modes to be built The target static discharge pattern that type is corresponding, determines corresponding static discharge function, it is possible to use select in this static discharge function At least two functional value gone out builds ESD and encourages model, it is not necessary to the ESD event utilizing test instrunment to produce reality is surveyed Examination, such that it is able to simulate the waveform identical with true ESD event, improves the structure efficiency of ESD excitation model.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to These accompanying drawings obtain other accompanying drawing.

Fig. 1 is a kind of method flow diagram that one embodiment of the invention provides；

Fig. 2 is the another kind of method flow diagram that one embodiment of the invention provides；

Fig. 3 is that the ESD that one embodiment of the invention provides encourages model schematic；

Fig. 4 is the hardware structure figure of the device place equipment that one embodiment of the invention provides；

Fig. 5 is a kind of apparatus structure schematic diagram that one embodiment of the invention provides；

Fig. 6 is the another kind of apparatus structure schematic diagram that one embodiment of the invention provides；

Fig. 7 is another apparatus structure schematic diagram that one embodiment of the invention provides；

Fig. 8 is another apparatus structure schematic diagram that one embodiment of the invention provides.

Detailed description of the invention

For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is The a part of embodiment of the present invention rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.

As it is shown in figure 1, embodiments provide the construction method of a kind of ESD excitation model, the method can include Following steps:

Step 101: according to the target static discharge pattern that ESD to be built excitation model is corresponding, determine that corresponding electrostatic is put Count by means of emails or letters.

Step 102: for the described static discharge function determined, selects at least two functional value.

Step 103: according to the described at least two functional value selected, construct the ESD that described static discharge function is corresponding Excitation model.

According to above-described embodiment, by the target static discharge pattern that ESD to be built excitation model is corresponding, determine corresponding Static discharge function, it is possible to use at least two functional value selected in this static discharge function builds ESD and encourages model, nothing The ESD event that test instrunment need to be utilized to produce reality is tested, such that it is able to simulate the ripple identical with true ESD event Shape, improves the structure efficiency of ESD excitation model.

In an embodiment of the invention, the static discharge pattern of ESD excitation model at least can include following three kinds: people Body static discharge pattern, the discharge mode of charged machine and the discharge mode of charging device.

In an embodiment of the invention, include when the static discharge pattern of ESD excitation model: human body electro static discharge pattern Time, following function can be defined as the static discharge function that human body electro static discharge pattern is corresponding:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁For characterizing fast discharge current pulse The time of liter, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄For characterizing the persistent period of slow discharge current pulse, I₁For characterizing the amplitude of fast discharge current pulse, I₂Slow for characterizing The amplitude of discharge current pulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.

Model is encouraged by the ESD utilizing above-mentioned function can simulate human body electro static discharge pattern quickly and accurately corresponding, Can be that subsequent set becomes the design of circuit to bring reference, bring convenience to user, improve efficiency.

In an embodiment of the invention, the simulation software that can build ESD excitation model includes multiple, each emulation The form that software can identify also differs, in order to construct ESD to encourage model, constructs described static discharge described Before the ESD excitation model that function is corresponding, farther include: determine the simulation software for drawing ESD excitation model；Determine institute State the target recognition form that simulation software is corresponding；It is described target recognition form that described at least two functional value is written as form Simulation document, thereby may be ensured that the simulation document write out with simulated software identification, and then can construct ESD excited modes Type.

It is in an embodiment of the invention, described that described at least two functional value is written as form is described target recognition The simulation document of form, including: when described target recognition form includes txt form, create txt file, by described at least two Individual functional value carries out two file arrangements in described txt file, and first file and second file are expressed as each respectively The abscissa of individual functional value and vertical coordinate, txt file arrangement completed is as described simulation document.

In an embodiment of the invention, construct ESD corresponding to described static discharge function described in and encourage model, bag Include: described simulation document is imported in described simulation software as pumping signal, utilize described simulation software to read each Functional value, draws in a coordinate system by each functional value read, and obtains the ESD excitation that this static discharge function is corresponding Model.

Wherein, the number that functional value selects is the most, and the ESD that draws out excitation model is the most accurate, such as, this functional value Number is 1000.

In an embodiment of the invention, the abscissa that different simulation softwares is corresponding when drawing ESD excitation model Unit is different, and in simulation document function by the unit of corresponding independent variable may be corresponding with simulation software abscissa unit also Difference, therefore to ensure that drawing out correct ESD encourages model, imports described simulation document as pumping signal described Before in described simulation software, farther include: determine the horizontal seat that described simulation software is corresponding when drawing ESD excitation model Target target unit, is adjusted to described target list by the unit of independent variable corresponding for each functional value in described simulation document Position.

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings and specific embodiment to this Invention is described in further detail.

As in figure 2 it is shown, embodiments provide the construction method of a kind of ESD excitation model, the method can include Following steps:

Step 201: determine the target static discharge pattern that ESD to be built excitation model is corresponding.

Wherein, ESD excitation model refers to the waveform during static discharge.

In the present embodiment, ESD excitation model at least can include following three kinds of static discharge patterns: human body electro static discharge Pattern, charged machine discharge mode and charging device discharge mode.Wherein,

Human body electro static discharge pattern refers to: knows from experience due to people and comes in contact between various object and rub, again with components and parts Components and parts, so the easy static electrification of human body, are also easily caused electrostatic damage by contact.Generally believe major part components and parts electrostatic damage Caused by static electricity on human body.

Charged machine discharge mode refers to: machine is because friction or sensing also can be charged, and charged machine passes through electronics unit device Part electric discharge will also result in damage.

Charging device discharge mode refers to: during components and parts assemble, transmit, test, test, transport and store by Rubbing with other material in housing, housing can static electrification.Once components and parts lead leg ground connection, housing will be by core body and extraction Lower limb discharges over the ground.

Below as a example by target static discharge pattern is for human body electro static discharge pattern, the present embodiment is described in detail.

Step 202: determine corresponding static discharge function according to target static discharge pattern.

In the present embodiment, when target static discharge pattern includes human body electro static discharge pattern, can be the most true Determine human body electro static discharge pattern and include fast discharge process and slow play electric process, can be using following function as static discharge function:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)---\left(1\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})---\left(2\right)$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})---\left(3\right)$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁For characterizing fast discharge current pulse The time of liter, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄For characterizing the persistent period of slow discharge current pulse, I₁For characterizing the amplitude of fast discharge current pulse, I₂Slow for characterizing The amplitude of discharge current pulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.Wherein, n value can take fixing Value 1.8.

According to (1) formula, the Section 1 in formula represents fast discharge process when human body contacts, Section 2 with integrated circuit Represent slow play electric process when human body contacts with integrated circuit.

Step 203: for the static discharge function determined, selects at least two functional value.

During waveform drawing, the point selection on waveform the most, the waveform drawn out is the most accurate, therefore, it can root At least two functional value, such as, 1000 is selected according to static discharge function.

Wherein, this static discharge argument of function time, t was as abscissa, and dependent variable I (t) is as vertical coordinate.Horizontal seat Difference between mark can be identical, it is also possible to differs.

As a example by difference between abscissa is identical below, abscissa from 0 to 100, stepping 0.1, the present embodiment is carried out Describe in detail.

Step 204: at least two functional value according to selecting writes simulation document.

In order to improve the efficiency that function is drawn, simulation document and the simulation software at least two function to selecting can be passed through Value carries out the drafting of ESD excitation model.

Wherein, this simulation document can be write by polyglot, such as, and Matlab, C language, C++.

Underneath with Matlab at least two functional value of above-mentioned static discharge function and selection write and emulate literary composition as follows Part:

Step 205: determine the simulation software for drawing ESD excitation model.

Such as, this simulation software is CST software.

Step 206: determine the target recognition form that simulation software is corresponding.

Owing to the form of input file is required by the pumping signal of CST software, the emulation literary composition therefore write in step 204 Part CST software cannot directly use.It is thus necessary to determine that the target recognition form that CST software is corresponding, this target recognition form is extremely Txt form can be included less.

Step 207: the form of simulation document is converted to target recognition form.

In the present embodiment, when carrying out the conversion of txt form, when described target recognition form includes txt form, create Txt file, carries out two file arrangements, first file and second in described txt file by described at least two functional value Individual file is expressed as abscissa and the vertical coordinate of each functional value respectively, and txt file arrangement completed is as described emulation File.

Step 208: determine the target unit of the abscissa that described simulation software is corresponding when drawing ESD excitation model, will In described simulation document, the unit of the independent variable that each functional value is corresponding is adjusted to and described target unit.

In order to ensure the correctness of the ESD excitation model drawn out, need not ensure that ESD excitation model is being drawn by simulation software Time corresponding abscissa unit identical with the unit of independent variable in simulation document.The unit of the independent variable in general simulation document is S, the abscissa unit that simulation software is corresponding is ns.

Owing to data volume is relatively big, in order to improve the speed that unit adjusts, it is possible to use Matlab writes following for and circulates language Sentence, realizes unit and adjusts:

For i=1:1001

S (i, 1)=(i-1)/1e10

S (i, 2)=I (i).

Step 209: simulation document is imported in simulation software as pumping signal.

Step 210: simulation software reads each functional value in simulation document, and is existed by each functional value read Coordinate system is drawn, obtains ESD and encourage model.

Refer to Fig. 3, encourage model for the ESD obtained.

Step 211: obtain in ESD standard the requirement of parameters in described target static discharge pattern, according to acquisition Requirement the ESD excitation model constructed is verified, and when being verified, then characterize described static discharge function and institute State target static discharge pattern match correct.

According to Fig. 3, this ESD excitation model includes two crests, represents fast discharge process and slow play electric process respectively, Additionally the rise time is 0.8ns, meets in ESD standard for the requirement of parameter in human body electro static discharge pattern.

As shown in Figure 4, Figure 5, the construction device of a kind of ESD excitation model is embodiments provided.Device embodiment Can be realized by software, it is also possible to realize by the way of hardware or software and hardware combining.For hardware view, such as Fig. 4 Shown in, for a kind of hardware structure diagram of construction device place equipment of the ESD excitation model that the embodiment of the present invention provides, except figure Outside processor shown in 4, internal memory, network interface and nonvolatile memory, in embodiment, the equipment at device place is usual Other hardware can also be included, such as the forwarding chip etc. of responsible process message.As a example by implemented in software, as it is shown in figure 5, conduct Device on one logical meaning, is that the CPU by its place equipment is by computer program corresponding in nonvolatile memory Instruction reads and runs formation in internal memory.The construction device of the ESD excitation model that the present embodiment provides, including:

First determines unit 501, for the target static discharge pattern corresponding according to ESD to be built excitation model, determines Corresponding static discharge function, and described static discharge function is exported to selecting unit 502；

Described selection unit 502, for for the described static discharge function determined, selects at least two functional value, and Described at least two functional value is exported to construction unit 503；

Described construction unit 503, for according to the described at least two functional value selected, constructing described static discharge letter The ESD that number is corresponding encourages model.

In an embodiment of the invention, described first determines unit 501, specifically at described target static discharge mould When formula includes human body electro static discharge pattern, following function is defined as the static discharge function that human body electro static discharge pattern is corresponding:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁For characterizing fast discharge current pulse The time of liter, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄For characterizing the persistent period of slow discharge current pulse, I₁For characterizing the amplitude of fast discharge current pulse, I₂Slow for characterizing The amplitude of discharge current pulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.

In an embodiment of the invention, refer to Fig. 6, the construction device of this ESD excitation model may further include:

Second determines unit 601, for determining the simulation software for drawing ESD excitation model, and determines described emulation The target recognition form that software is corresponding, exports described target recognition form to converting unit 602；

Described converting unit 602, is described target recognition form for described at least two functional value is written as form Simulation document；

Described construction unit 503, specifically for importing to described simulation software using described simulation document as pumping signal In, utilize described simulation software to read each functional value, each functional value read is drawn in a coordinate system, The ESD corresponding to this static discharge function encourages model.

In an embodiment of the invention, refer to Fig. 7, the construction device of this ESD excitation model may further include:

3rd determines unit 701, for determining described simulation software corresponding abscissa when drawing ESD and encouraging model Target unit, and described target unit is exported to adjustment unit 702；

Described adjustment unit 702, for adjusting the unit of independent variable corresponding for each functional value in described simulation document Whole for described target unit.

In an embodiment of the invention, described converting unit 602, specifically for including at described target recognition form During txt form, create txt file, described at least two functional value is carried out in described txt file two file arrangements, the One file and second file are expressed as abscissa and the vertical coordinate of each functional value, txt arrangement completed literary composition respectively Part is as described simulation document；

In an embodiment of the invention, refer to Fig. 8, the construction device of this ESD excitation model may further include:

Acquiring unit 801, for obtaining in ESD standard the requirement of parameters in described target static discharge pattern；

Authentication unit 802, for verifying the ESD excitation model constructed according to the requirement obtained, and in checking By time, then characterize described static discharge function correct with described target static discharge pattern match.

To sum up, the embodiment of the present invention at least can realize following beneficial effect:

1, in embodiments of the present invention, by the target static discharge pattern that ESD to be built excitation model is corresponding, phase is determined The static discharge function answered, it is possible to use at least two functional value selected in this static discharge function builds ESD excited modes Type, it is not necessary to the ESD event utilizing test instrunment to produce reality is tested, such that it is able to simulate and true ESD event phase Same waveform, improves the structure efficiency of ESD excitation model.

2, in embodiments of the present invention, it is determined by simulation software, and determines the target recognition form that simulation software is corresponding, At least two functional value is written as the simulation document that form is target recognition form, and simulation document is led as pumping signal Enter in described simulation software, to utilize simulation software to read each functional value, by each functional value of reading at coordinate System draws, obtains ESD corresponding to this static discharge function and encourage model.By using simulation software to replace existing survey Measuring appratus, such that it is able to improve the structure efficiency of ESD excitation model further.

3, in embodiments of the present invention, the abscissa that described simulation software is corresponding when drawing ESD excitation model is determined Target unit, is adjusted to the unit of independent variable corresponding for each functional value in described simulation document and described target unit, Such that it is able to improve the accuracy rate of ESD excitation model construction.

The contents such as the information between each unit in said apparatus is mutual, execution process, owing to implementing with the inventive method Example is based on same design, and particular content can be found in the narration in the inventive method embodiment, and here is omitted.

It should be noted that in this article, the relational terms of such as first and second etc is used merely to an entity Or operation separates with another entity or operating space, and not necessarily require or imply existence between these entities or operation The relation of any this reality or order.And, term " includes ", " comprising " or its any other variant are intended to non- Comprising of exclusiveness, so that include that the process of a series of key element, method, article or equipment not only include those key elements, But also include other key elements being not expressly set out, or also include being consolidated by this process, method, article or equipment Some key elements.In the case of there is no more restriction, statement the key element " including " and limiting, do not arrange Except there is also other same factor in including the process of described key element, method, article or equipment.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be passed through The hardware that programmed instruction is relevant completes, and aforesaid program can be stored in the storage medium of embodied on computer readable, this program Upon execution, perform to include the step of said method embodiment；And aforesaid storage medium includes: ROM, RAM, magnetic disc or light In the various medium that can store program code such as dish.

Last it should be understood that the foregoing is only presently preferred embodiments of the present invention, it is merely to illustrate the skill of the present invention Art scheme, is not intended to limit protection scope of the present invention.All made within the spirit and principles in the present invention any amendment, Equivalent, improvement etc., be all contained in protection scope of the present invention.

Claims (10)

1. the construction method of a static discharge ESD excitation model, it is characterised in that including:

According to the target static discharge pattern that ESD to be built excitation model is corresponding, determine corresponding static discharge function；

For the described static discharge function determined, select at least two functional value；

According to the described at least two functional value selected, construct ESD corresponding to described static discharge function and encourage model.

Method the most according to claim 1, it is characterised in that described determine corresponding static discharge function, including:

When described target static discharge pattern includes human body electro static discharge pattern, following function is defined as human body electro static discharge The static discharge function that pattern is corresponding:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁When the rising characterizing fast discharge current pulse Between, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄With In the persistent period of the slow discharge current pulse of sign, I₁For characterizing the amplitude of fast discharge current pulse, I₂For characterizing slow play electricity The amplitude of current impulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.

Method the most according to claim 1, it is characterised in that

Described construct described static discharge function corresponding ESD excitation model before, farther include: determine for drawing The simulation software of ESD excitation model；Determine the target recognition form that described simulation software is corresponding；By described at least two functional value It is written as the simulation document that form is described target recognition form；

Described ESD corresponding to described static discharge function that construct encourages model, including: using described simulation document as excitation letter Number import in described simulation software, utilize described simulation software to read each functional value, each functional value that will read Draw in a coordinate system, obtain ESD corresponding to this static discharge function and encourage model.

Method the most according to claim 3, it is characterised in that described described at least two functional value is written as form is The simulation document of described target recognition form, including: when described target recognition form includes txt form, create txt file, Described at least two functional value carries out in described txt file two file arrangements, and first file and second file are divided Not being expressed as abscissa and the vertical coordinate of each functional value, txt file arrangement completed is as described simulation document.

Method the most according to claim 3, it is characterised in that described simulation document is imported as pumping signal described Before in described simulation software, farther include:

Determine the target unit of the abscissa that described simulation software is corresponding when drawing ESD excitation model, by described simulation document In the unit of independent variable corresponding to each functional value be adjusted to described target unit.

6. according to described method arbitrary in claim 1-5, it is characterised in that construct described static discharge function described After corresponding ESD excitation model, farther include:

Obtain in ESD standard the requirement of parameters in described target static discharge pattern；

According to the requirement obtained, the ESD excitation model constructed is verified, and when being verified, then characterize described electrostatic Electric discharge function is correct with described target static discharge pattern match.

7. the construction device of a static discharge ESD excitation model, it is characterised in that including:

First determines unit, for the target static discharge pattern corresponding according to ESD to be built excitation model, determines the most quiet Discharge of electricity function, and described static discharge function is exported to selecting unit；

Described selection unit, for for the described static discharge function determined, selects at least two functional value, and by described extremely Few two functional values export to construction unit；

Described construction unit, for according to the described at least two functional value selected, constructs described static discharge function corresponding ESD encourage model.

The construction device of ESD the most according to claim 7 excitation model, it is characterised in that described first determines unit, tool Following function, for when described target static discharge pattern includes human body electro static discharge pattern, is defined as static electricity on human body and puts by body The static discharge function that power mode is corresponding:

$I\left(t\right)=\frac{I_1}{k_1}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_1}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_2}\right)+\frac{I_2}{k_2}\×\frac{{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}{1+{\left(\frac{t}{{\mathrm{\τ}}_3}\right)}^n}\×\exp \left(\frac{-t}{{\mathrm{\τ}}_4}\right)$

$k_1=\exp (-\frac{{\mathrm{\τ}}_1}{{\mathrm{\τ}}_2}{\left(\frac{{\mathrm{n\τ}}_2}{{\mathrm{\τ}}_1}\right)}^{1/n})$

$k_2=\exp (-\frac{{\mathrm{\τ}}_3}{{\mathrm{\τ}}_4}{\left(\frac{{\mathrm{n\τ}}_4}{{\mathrm{\τ}}_3}\right)}^{1/n})$

Wherein, static discharge current when I (t) is for being characterized in time t；τ₁When the rising characterizing fast discharge current pulse Between, τ₂For characterizing the rise time of slow discharge current pulse, τ₃For characterizing the persistent period of fast discharge current pulse, τ₄With In the persistent period of the slow discharge current pulse of sign, I₁For characterizing the amplitude of fast discharge current pulse, I₂For characterizing slow play electricity The amplitude of current impulse, n is used for characterizing preset parameter, k₁、k₂For characterizing intermediate parameters.

The construction device of ESD the most according to claim 7 excitation model, it is characterised in that

Farther include:

Second determines unit, for determining the simulation software for drawing ESD excitation model, and determines that described simulation software is corresponding Target recognition form, described target recognition form is exported to converting unit；

Described converting unit, for being written as the emulation literary composition that form is described target recognition form by described at least two functional value Part；

Described construction unit, specifically for importing in described simulation software using described simulation document as pumping signal, utilizes Described simulation software reads each functional value, is drawn in a coordinate system by each functional value read, obtains this quiet The ESD that discharge of electricity function is corresponding encourages model.

The construction device of ESD the most according to claim 9 excitation model, it is characterised in that

Farther include:

3rd determines unit, for determining that described simulation software is at the target list drawing abscissa corresponding when ESD encourages model Position, and described target unit is exported to adjustment unit；

Described adjustment unit, described for the unit of independent variable corresponding for each functional value in described simulation document is adjusted to Target unit；

And/or,

Described converting unit, specifically for when described target recognition form includes txt form, creates txt file, by described extremely Few two functional values carry out two file arrangements in described txt file, and first file and second file are expressed as respectively The abscissa of each functional value and vertical coordinate, txt file arrangement completed is as described simulation document；

And/or,

Farther include:

Acquiring unit, for obtaining in ESD standard the requirement of parameters in described target static discharge pattern；

Authentication unit, for the ESD excitation model constructed being verified according to the requirement obtained, and when being verified, Then characterize described static discharge function correct with described target static discharge pattern match.