CN104902688A - Etching liquid adding method, device, and system - Google Patents
Etching liquid adding method, device, and system Download PDFInfo
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- CN104902688A CN104902688A CN201410077485.4A CN201410077485A CN104902688A CN 104902688 A CN104902688 A CN 104902688A CN 201410077485 A CN201410077485 A CN 201410077485A CN 104902688 A CN104902688 A CN 104902688A
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Abstract
The invention belongs to the field of etching technology and provides an etching liquid adding method, device, and system. The method comprises: acquiring a specific gravity current value, a hydrochloric acid current value, and an oxidizing agent current value in the etching liquid; comparing the specific gravity current value with a preset specific gravity target value to generate a first difference value thereof, comparing the hydrochloric acid current value with a preset hydrochloric acid target value to generate a second difference value thereof, and comparing the oxidizing agent current value with a preset oxidizing agent target value to generate a third difference value thereof; acquiring a first adding proportion, a second adding proportion, and a third adding proportion which correspond to the first difference value, the second difference value, and the third difference value respectively; multiplying the first adding proportion by an adding period to generate a first adding time, multiplying the second adding proportion by the adding period to generate a second adding time, and multiplying the third adding proportion by the adding period to generate a third adding time; and adding clear water, hydrochloric acid, and oxidizing agent according to the first adding time, the second adding time, and the third adding time respectively.
Description
Technical field
The invention belongs to etching technique field, particularly relate to a kind of etching solution adding method, Apparatus and system.
Background technology
On printed circuit board production line, etching solution is usually adopted to etch printed circuit board.Current etching solution add-on system on the market generally uses multiple mutual independently liquid medicine analyzer to analyze etching solution and the interpolation of sub-liquid makes liquid medicine keep active, to meet the quality requirement of board production business automated circuit plate production.
For proportion, usually, in etching solution add-on system, add signal according to desired value and measurement proportion output switch formula, and add signal by switching regulator, control constant displacement pump adds sub-liquid and enters etching solution.Owing to only having switching regulator to add signal, therefore only open or close two states, such as: desired value is 1.5, currency exports lower than 1.5 and adds signal, relay closes; Currency is opened a way without interpolation signal, relay higher than 1.5.
Therefore, cannot accurately control in etching solution add-on system or cannot fine adjustment quantitative pump to the addition of liquid medicine, there is the shortcoming of following two aspects in it:
First aspect, adds sub-liquid and enters etching solution, and sub-liquid is the liquid being added to etching solution.Such as add clear water, etching solution can change currency too fast or excessively slowly, and the numerical fluctuations of liquid medicine is comparatively large, the quality of the circuit board that the control precision of etching solution add-on system on currency is lower, impact is produced.
Second aspect, the consumption adding sub-liquid is comparatively large, causes the waste of sub-liquid, such as, adds oxidant, cause the waste of oxidant.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of etching solution adding method, be intended to solve in etching solution add-on system cannot accurately control or cannot fine adjustment quantitative pump to the addition of liquid medicine, the quality that the numerical fluctuations of liquid medicine is comparatively large, control precision consumption that is lower, that add sub-liquid causes more greatly affecting the circuit board produced and cause the problem of waste of sub-liquid.
The embodiment of the present invention is achieved in that a kind of etching solution adding method, comprising:
Obtain proportion currency, hydrochloric acid currency, the oxidant currency in etching solution;
By described proportion currency compared with the proportion desired value preset, generate the first difference between the two,
By described hydrochloric acid currency compared with the hydrochloric acid desired value preset, generate the second difference between the two,
By described oxidant currency compared with the oxidant desired value preset, generate the 3rd difference between the two;
In the correspondence table set up in advance, obtain the first adding proportion, the second adding proportion, the 3rd adding proportion of the first difference of generation, the second difference, the 3rd difference difference correspondence;
Described first adding proportion, the second adding proportion, the 3rd adding proportion were multiplied respectively with the interpolation cycle of presetting, generate first and add time, the second interpolation time, the 3rd interpolation time;
Add the time, second according to generate first and add time, the 3rd interpolation time, add clear water, hydrochloric acid, oxidant respectively;
Wherein, proportion currency is the ratio of the density of etching solution that arrives of proportion monitor current detection and the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates;
Wherein, the corresponding relation between difference and adding proportion is stored in corresponding table;
Wherein, described oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
Another object of the embodiment of the present invention is to provide a kind of etching solution adding set, comprising:
First acquiring unit, for obtaining proportion currency, hydrochloric acid currency, the oxidant currency in etching solution;
Comparing unit, for by described proportion currency with preset proportion desired value compared with, generate the first difference between the two, by described hydrochloric acid currency compared with the hydrochloric acid desired value preset, generate the second difference between the two, by described oxidant currency compared with the oxidant desired value preset, generate the 3rd difference between the two;
Second acquisition unit, in the correspondence table set up in advance, obtains the first adding proportion, the second adding proportion, the 3rd adding proportion of the first difference of generation, the second difference, the 3rd difference difference correspondence;
Generation unit, is multiplied with the interpolation cycle of presetting respectively by described first adding proportion, the second adding proportion, the 3rd adding proportion, generates first and adds time, the second interpolation time, the 3rd interpolation time;
Adding device, adding time, the 3rd interpolation time for adding the time, second according to generate first, adding clear water, hydrochloric acid, oxidant respectively;
Wherein, proportion currency is the density of etching solution of proportion monitor current detection and the ratio of the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates;
Wherein, the corresponding relation between difference and adding proportion is stored in corresponding table;
Wherein, described oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
Another object of the embodiment of the present invention is to provide a kind of etching solution add-on system, comprise above-mentioned etching solution adding set, one proportion monitor, one hydrochloric acid monitor, one oxidant monitor, the constant displacement pump of one access clear water or electromagnetically operated valve, the constant displacement pump of one loading hydrochloric acid, and one loads the constant displacement pump of oxidant, wherein, described proportion monitor is connected with the constant displacement pump or electromagnetically operated valve accessing clear water by described etching solution adding set, described hydrochloric acid monitor is connected with the constant displacement pump loading hydrochloric acid by described etching solution adding set, described oxidant monitor is connected with the constant displacement pump loading oxidant by described etching solution adding set.
In embodiments of the present invention, by adding the time according to generate first, second adds the time, 3rd adds the time, add clear water respectively, hydrochloric acid, oxidant, the addition of constant displacement pump to liquid medicine can be controlled to make etching solution add-on system, the numerical fluctuations solving liquid medicine is larger, control precision is lower, the consumption adding sub-liquid causes more greatly affecting the quality of the circuit board produced and causes the problem of waste of sub-liquid, effectively control liquid medicine etch capabilities, reduce fluctuation, the quality of the circuit board that order is produced keeps highly stable, decrease the use amount of adding sub-liquid simultaneously, reduce operating cost.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the etching solution adding method that the embodiment of the present invention provides;
Fig. 2 is the structured flowchart of the etching solution adding set that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 is the realization flow figure of a kind of etching solution adding method that the embodiment of the present invention provides, and details are as follows:
In step S101, obtain proportion currency, hydrochloric acid currency, the oxidant currency in etching solution;
Wherein, the main program of control board in etching solution add-on system, by the proportion monitor in processing solution tank, detects the ratio of the density of etching solution and the density of clear water, obtains the proportion in etching solution.
By hydrochloric acid monitor, the numerical value of the current value conversion generation of the conductance detected, obtains hydrochloric acid currency.
By oxidant monitor, detect and obtain oxidant currency by the numerical value that the magnitude of voltage conversion of the redox reaction that current detection arrives generates.
Wherein, proportion currency is the ratio of the density of etching solution that arrives of proportion monitor current detection and the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates;
Wherein, processing solution tank loads etching solution.
In step s 102, by described proportion currency compared with the proportion desired value preset, generate the first difference between the two, by described hydrochloric acid currency compared with the hydrochloric acid desired value preset, generate the second difference between the two, by described oxidant currency compared with the oxidant desired value preset, generate the 3rd difference between the two;
Wherein, proportion desired value, hydrochloric acid desired value, oxidant desired value are default threshold value, can, for user is from establishing, also can be system default.
In step s 103, in the correspondence table set up in advance, obtain the first adding proportion, the second adding proportion, the 3rd adding proportion of the first difference of generation, the second difference, the 3rd difference difference correspondence;
Wherein, the corresponding relation between difference and adding proportion is stored in corresponding table.
In step S104, described first adding proportion, the second adding proportion, the 3rd adding proportion were multiplied respectively with the interpolation cycle of presetting, generate first and add time, the second interpolation time, the 3rd interpolation time;
Wherein, the interpolation cycle can be understood as the pulse period.
Wherein, the first adding proportion, the second adding proportion, the 3rd adding proportion can be understood as the duration of pulse and the ratio of pulse period, namely duty ratio.
Wherein, the first interpolation time, the second interpolation time, the 3rd interpolation time can be understood as the duration of pulse.
In step S105, add the time, second according to generate first and add time, the 3rd interpolation time, add clear water, hydrochloric acid, oxidant respectively;
Wherein, add clear water according to the generate first time of adding, add hydrochloric acid according to the generate second time of adding, add oxidant according to the generate the 3rd time of adding.
Wherein, proportion currency is the ratio of the density of etching solution that arrives of proportion monitor current detection and the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates.
Wherein, oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
In the present embodiment, add the time, second according to generate first and add time, the 3rd interpolation time, add clear water, hydrochloric acid, oxidant respectively, its advantage is as follows:
1, can effectively control liquid medicine etch capabilities, reduce fluctuation, order is done plate quality and is kept highly stable.
2, reduce the use amount of adding sub-liquid, reduce operating cost.
3, can prevent the mistake caused due to unit exception and/or faulty operation from adding.
4, the high-speed production of circuit board is supported.
As a preferred embodiment of the present invention, a unified interface is set in control board, adopt unified data format respectively with proportion monitor, hydrochloric acid monitor, oxidant monitor communicates, thus avoid proportion monitor, hydrochloric acid monitor, oxidant monitor all needs the situation of a controller, avoid due to type and plate disunity simultaneously, external form, pop one's head in inconsistent, sampling box need design situation about could integrate especially, make a control board can control three constant displacement pumps and add three seed liquor.
As a preferred embodiment of the present invention, described proportion desired value comprises at least one in different specific weight desired value corresponding to different production lines and different specific weight desired value corresponding to different formulations, described hydrochloric acid desired value comprises at least one in different hydrochloric acid desired value corresponding to different production lines and different hydrochloric acid desired values corresponding to different formulations, and described oxidant desired value comprises at least one in different oxidant desired value corresponding to different production lines and different oxidant desired values corresponding to different formulations.
In the present embodiment, because different production line business is different, the different target value that different business needs.Therefore the corresponding relation of production line and desired value can first be set up, desired value is made to comprise different specific weight desired value corresponding to different production lines, the different hydrochloric acid desired values that different production lines is corresponding, different oxidant desired values that different production lines is corresponding, so that can directly call in step s 102.
In the present embodiment, because various boards needs different clear water desired values, hydrochloric acid desired value, oxidant desired value, namely different formulas.Such as, clear water desired value required for the circuit board in accurate device and ordinary circuit board, hydrochloric acid desired value, oxidant desired value are different.Therefore the corresponding relation of various boards and different target value (formula) can first be set up, desired value is made to comprise clear water desired value corresponding to circuit board, hydrochloric acid desired value, oxidant desired value (formula), so that the follow-up formula can selecting different production according to different circuit boards, so that can directly call in step s 102.
As a preferred embodiment of the present invention, when described proportion desired value comprises different specific weight desired value corresponding to different formulations, when described hydrochloric acid desired value comprises different hydrochloric acid desired value corresponding to different formulations, when described oxidant desired value comprises different oxidant desired value corresponding to different formulations, described respectively by described proportion currency, hydrochloric acid currency, oxidant currency and the proportion desired value preset, hydrochloric acid desired value, compared with oxidant desired value, when generating difference between the two, comprising:
Obtain the formula produced in real time;
By described proportion currency compared with the proportion desired value in described formula, generate the first difference between the described proportion currency proportion desired value corresponding with described formula;
By described hydrochloric acid currency compared with the hydrochloric acid desired value in described formula, generate the second difference between the described hydrochloric acid currency hydrochloric acid desired value corresponding with described formula;
By described oxidant currency compared with the oxidant desired value in described formula, generate the 3rd difference between the described oxidant currency oxidant desired value corresponding with described formula.
As a preferred embodiment of the present invention, it is characterized in that, add the time, second according to generate first and add time, the 3rd interpolation time, add clear water, hydrochloric acid, oxidant respectively, be specially:
Add the time according to generate first, control the pwm pulse exporting the first constant displacement pump to, described first constant displacement pump of control interpolation cycle interior access clear water is opened or is controlled the interpolation cycle interior electromagnetically operated valve accessing clear water and opens, to add described clear water;
Wherein, the first interpolation time was the duration of pulse.
Add the time according to first, control the pwm pulse exporting the first constant displacement pump to, open after receiving pwm pulse to make the first constant displacement pump, add clear water according to the time that pwm pulse continues.
Wherein, the electromagnetically operated valve controlling access clear water in the interpolation cycle is opened, and directly connects clear water water inlet.
Add the time according to generate second, control the pwm pulse exporting the second constant displacement pump to, described second constant displacement pump controlling to load in the interpolation cycle hydrochloric acid is opened, to add described hydrochloric acid;
Wherein, the second interpolation time was the duration of pwm pulse.
Add the time according to second, control the pwm pulse exporting the second constant displacement pump to, open after receiving pwm pulse to make the second constant displacement pump, add hydrochloric acid according to the time that pwm pulse continues.
Add the time according to the generate the 3rd, control the pwm pulse exporting the 3rd constant displacement pump to, described 3rd constant displacement pump controlling interpolation cycle in-built oxygen carrier agent is opened, to add described oxidant.
Wherein, the 3rd interpolation time was the duration of pwm pulse.
Add the time according to the 3rd, control the pwm pulse exporting the 3rd constant displacement pump to, open after receiving pwm pulse to make the 3rd constant displacement pump, add oxidant according to the time that pwm pulse continues.
Wherein, oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
Wherein, pulse can be any one pulse existing, such as square-wave pulse, rectangular pulse, spike etc.
(English: Pulse Width Modulation with PWM, Chinese: pulse width modulation) be example, increase its adding proportion, namely add the effective time (duration of pulse) in the fixed cycle, make increasing of the time of the sub-liquid of the interpolation of constant displacement pump, accordingly, the addition of sub-liquid also increases.
Such as, the constant displacement pump of 0.6L within 60 seconds, can be exported, regulate adding proportion to be 10%, the interpolation time is 6 seconds, and within 6 seconds, be the duration of pulse, constant displacement pump just can be opened after receiving pulse, therefore constant displacement pump exports the sub-liquid of 0.06L for 60 seconds, thus can control the addition of constant displacement pump antithetical phrase liquid.
As a preferred embodiment of the present invention, also comprise:
Real-time testing environment information, described environmental information comprises outage information, termination of pumping information, production information, enters one in plate information, sensor information, temperature information or its combination;
Judge that whether described environmental information meets and preset environmental abnormality condition, described environmental abnormality condition comprise shut down abnormal, termination of pumping is abnormal, it is abnormal to stop producing, lack one in plate exception, sensor abnormality, temperature anomaly or it combines;
If so, stop adding sub-liquid, and output alarm signal.
In embodiments of the present invention; etching solution add-on system connects multiple transducer; by the real-time testing environment information of multiple transducer, described environmental information comprises outage information, termination of pumping information, production information, enters one in plate information, sensor information, temperature information or its combination.
The operation conditions of unit is analyzed.For outage information, termination of pumping information, production information, enter plate information, sensor information, temperature information etc. and carry out synchronization monitoring.
After the above environmental data of comprehensive analysis, judge that whether environmental information meets and preset environmental abnormality condition, environmental abnormality condition comprise shut down abnormal, termination of pumping is abnormal, it is abnormal to stop producing, lack one in plate exception, sensor abnormality, temperature anomaly or it combines,
If, stop adding sub-liquid, and output alarm signal, and on the touch screen interface of etching solution add-on system display alarm data, to make user can fast processing problem, thus effectively prevent when liquid medicine or unit occur abnormal (as temperature does not arrive target zone), interpolation is by mistake caused to make system out of hand, the quality of circuit board that impact is produced, causes user time and pecuniary loss problem, thus ensure that the validity of system, ensure that the normal production of circuit board.
Fig. 2 is the structured flowchart of a kind of etching solution adding set that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present embodiment.
With reference to Fig. 2, this etching solution adding set, comprising:
First acquiring unit, for obtaining proportion currency, hydrochloric acid currency, the oxidant currency in etching solution;
Comparing unit, for by described proportion currency with preset proportion desired value compared with, generate the first difference between the two, by described hydrochloric acid currency compared with the hydrochloric acid desired value preset, generate the second difference between the two, by described oxidant currency compared with the oxidant desired value preset, generate the 3rd difference between the two;
Second acquisition unit, in the correspondence table set up in advance, obtains the first adding proportion, the second adding proportion, the 3rd adding proportion of the first difference of generation, the second difference, the 3rd difference difference correspondence;
Generation unit, for described first adding proportion, the second adding proportion, the 3rd adding proportion being multiplied respectively with the interpolation cycle of presetting, generating first and adding time, the second interpolation time, the 3rd interpolation time;
Adding device, adding time, the 3rd interpolation time for adding the time, second according to generate first, adding clear water, hydrochloric acid, oxidant respectively;
Wherein, proportion currency is the density of etching solution of proportion monitor current detection and the ratio of the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates;
Wherein, the corresponding relation between difference and adding proportion is stored in corresponding table;
Wherein, described oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
Further, in the apparatus, described proportion desired value comprises at least one in different specific weight desired value corresponding to different production lines and different specific weight desired value corresponding to different formulations, described hydrochloric acid desired value comprises at least one in different hydrochloric acid desired value corresponding to different production lines and different hydrochloric acid desired values corresponding to different formulations, and described oxidant desired value comprises at least one in different oxidant desired value corresponding to different production lines and different oxidant desired values corresponding to different formulations.
Further, in the apparatus, described comparing unit, also comprises:
First obtains subelement, for obtaining the formula produced in real time;
First compares subelement, for by described proportion currency compared with the proportion desired value in described formula, generate the first difference between the described proportion currency proportion desired value corresponding with described formula;
Second compares subelement, for by described hydrochloric acid currency compared with the hydrochloric acid desired value in described formula, generate the second difference between the described hydrochloric acid currency hydrochloric acid desired value corresponding with described formula;
3rd compares subelement, for by described oxidant currency compared with the oxidant desired value in described formula, generate the 3rd difference between the described oxidant currency oxidant desired value corresponding with described formula.
Further, in the apparatus, described adding device, comprising:
First adding device, for adding the time according to generate first, control the pwm pulse exporting the first constant displacement pump to, the described first constant displacement pump unlatching controlling access clear water in the interpolation cycle or the electromagnetically operated valve controlling access clear water in the interpolation cycle are opened, to add described clear water;
Second adding device, for adding the time according to generate second, controls the pwm pulse exporting the second constant displacement pump to, and described second constant displacement pump controlling to load in the interpolation cycle hydrochloric acid is opened, to add described hydrochloric acid;
3rd adding device, for adding the time according to the generate the 3rd, controls the pwm pulse exporting the 3rd constant displacement pump to, and described 3rd constant displacement pump controlling interpolation cycle in-built oxygen carrier agent is opened, to add described oxidant.
Further, in the apparatus, also comprise:
Detecting unit, for real-time testing environment information, described environmental information comprises outage information, termination of pumping information, production information, enters one in plate information, sensor information, temperature information or its combination;
Judging unit, presets environmental abnormality condition for judging that whether described environmental information meets, described environmental abnormality condition comprise shut down abnormal, termination of pumping is abnormal, it is abnormal to stop producing, lack one in plate exception, sensor abnormality, temperature anomaly or it combines;
Stop element, adds sub-liquid for if so, stopping;
Output unit, for if so, output alarm signal.
The invention provides a kind of etching solution add-on system, comprise above-mentioned etching solution adding set, one proportion monitor, one hydrochloric acid monitor, one oxidant monitor, the constant displacement pump of one access clear water or electromagnetically operated valve, the constant displacement pump of one loading hydrochloric acid, and one loads the constant displacement pump of oxidant, wherein, described proportion monitor is connected with the constant displacement pump or electromagnetically operated valve accessing clear water by described etching solution adding set, described hydrochloric acid monitor is connected with the constant displacement pump loading hydrochloric acid by described etching solution adding set, described oxidant monitor is connected with the constant displacement pump loading oxidant by described etching solution adding set.
The device that the embodiment of the present invention provides can be applied in the embodiment of the method for aforementioned correspondence, and details, see the description of above-described embodiment, do not repeat them here.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computer, hard disk or CD etc., comprise some instructions in order to make a computer equipment (can be PLC, personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. an etching solution adding method, is characterized in that, comprising:
Obtain proportion currency, hydrochloric acid currency, the oxidant currency in etching solution;
By described proportion currency compared with the proportion desired value preset, generate the first difference between the two,
By described hydrochloric acid currency compared with the hydrochloric acid desired value preset, generate the second difference between the two,
By described oxidant currency compared with the oxidant desired value preset, generate the 3rd difference between the two;
In the correspondence table set up in advance, obtain the first adding proportion, the second adding proportion, the 3rd adding proportion of the first difference of generation, the second difference, the 3rd difference difference correspondence;
Described first adding proportion, the second adding proportion, the 3rd adding proportion were multiplied respectively with the interpolation cycle of presetting, generate first and add time, the second interpolation time, the 3rd interpolation time;
Add the time, second according to generate first and add time, the 3rd interpolation time, add clear water, hydrochloric acid, oxidant respectively;
Wherein, proportion currency is the ratio of the density of etching solution that arrives of proportion monitor current detection and the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates;
Wherein, the corresponding relation between difference and adding proportion is stored in corresponding table;
Wherein, described oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
2. method according to claim 1, it is characterized in that, described proportion desired value comprises at least one in different specific weight desired value corresponding to different production lines and different specific weight desired value corresponding to different formulations, described hydrochloric acid desired value comprises at least one in different hydrochloric acid desired value corresponding to different production lines and different hydrochloric acid desired values corresponding to different formulations, and described oxidant desired value comprises at least one in different oxidant desired value corresponding to different production lines and different oxidant desired values corresponding to different formulations.
3. method according to claim 2, it is characterized in that, when described proportion desired value comprises different specific weight desired value corresponding to different formulations, when described hydrochloric acid desired value comprises different hydrochloric acid desired value corresponding to different formulations, when described oxidant desired value comprises different oxidant desired value corresponding to different formulations, described respectively by described proportion currency, hydrochloric acid currency, oxidant currency and the proportion desired value preset, hydrochloric acid desired value, compared with oxidant desired value, when generating difference between the two, comprising:
Obtain the formula produced in real time;
By described proportion currency compared with the proportion desired value in described formula, generate the first difference between the described proportion currency proportion desired value corresponding with described formula;
By described hydrochloric acid currency compared with the hydrochloric acid desired value in described formula, generate the second difference between the described hydrochloric acid currency hydrochloric acid desired value corresponding with described formula;
By described oxidant currency compared with the oxidant desired value in described formula, generate the 3rd difference between the described oxidant currency oxidant desired value corresponding with described formula.
4. method according to claim 1, is characterized in that, adds the time, second and adds time, the 3rd interpolation time, add clear water, hydrochloric acid, oxidant respectively, be specially according to generate first:
Add the time according to generate first, control the pwm pulse exporting the first constant displacement pump to, described first constant displacement pump of control interpolation cycle interior access clear water is opened or is controlled the interpolation cycle interior electromagnetically operated valve accessing clear water and opens, to add described clear water;
Add the time according to generate second, control the pwm pulse exporting the second constant displacement pump to, described second constant displacement pump controlling to load in the interpolation cycle hydrochloric acid is opened, to add described hydrochloric acid;
Add the time according to the generate the 3rd, control the pwm pulse exporting the 3rd constant displacement pump to, described 3rd constant displacement pump controlling interpolation cycle in-built oxygen carrier agent is opened, to add described oxidant.
5. method according to claim 1, is characterized in that, also comprises:
Real-time testing environment information, described environmental information comprises outage information, termination of pumping information, production information, enters one in plate information, sensor information, temperature information or its combination;
Judge that whether described environmental information meets and preset environmental abnormality condition, described environmental abnormality condition comprise shut down abnormal, termination of pumping is abnormal, it is abnormal to stop producing, lack one in plate exception, sensor abnormality, temperature anomaly or it combines;
If so, stop adding sub-liquid, and output alarm signal.
6. an etching solution adding set, is characterized in that, comprising:
First acquiring unit, for obtaining proportion currency, hydrochloric acid currency, the oxidant currency in etching solution;
Comparing unit, for by described proportion currency with preset proportion desired value compared with, generate the first difference between the two, by described hydrochloric acid currency compared with the hydrochloric acid desired value preset, generate the second difference between the two, by described oxidant currency compared with the oxidant desired value preset, generate the 3rd difference between the two;
Second acquisition unit, in the correspondence table set up in advance, obtains the first adding proportion, the second adding proportion, the 3rd adding proportion of the first difference of generation, the second difference, the 3rd difference difference correspondence;
Generation unit, is multiplied with the interpolation cycle of presetting respectively by described first adding proportion, the second adding proportion, the 3rd adding proportion, generates first and adds time, the second interpolation time, the 3rd interpolation time;
Adding device, adding time, the 3rd interpolation time for adding the time, second according to generate first, adding clear water, hydrochloric acid, oxidant respectively;
Wherein, proportion currency is the density of etching solution of proportion monitor current detection and the ratio of the density of clear water, hydrochloric acid currency is the numerical value that the current value conversion of the conductance that hydrochloric acid monitor current detection arrives generates, and oxidant currency is the numerical value that the magnitude of voltage conversion of the redox reaction that oxidant monitor current detection arrives generates;
Wherein, the corresponding relation between difference and adding proportion is stored in corresponding table;
Wherein, described oxidant includes but not limited to sodium chlorate, hydrogen peroxide.
7. device according to claim 6, is characterized in that, described comparing unit, also comprises:
First obtains subelement, for obtaining the formula produced in real time;
First compares subelement, for by described proportion currency compared with the proportion desired value in described formula, generate the first difference between the described proportion currency proportion desired value corresponding with described formula;
Second compares subelement, for by described hydrochloric acid currency compared with the hydrochloric acid desired value in described formula, generate the second difference between the described hydrochloric acid currency hydrochloric acid desired value corresponding with described formula;
3rd compares subelement, for by described oxidant currency compared with the oxidant desired value in described formula, generate the 3rd difference between the described oxidant currency oxidant desired value corresponding with described formula.
8. device according to claim 6, is characterized in that, described adding device, comprising:
First adding device, for adding the time according to generate first, control the pwm pulse exporting the first constant displacement pump to, the described first constant displacement pump unlatching controlling access clear water in the interpolation cycle or the electromagnetically operated valve controlling access clear water in the interpolation cycle are opened, to add described clear water;
Second adding device, for adding the time according to generate second, controls the pwm pulse exporting the second constant displacement pump to, and described second constant displacement pump controlling to load in the interpolation cycle hydrochloric acid is opened, to add described hydrochloric acid;
3rd adding device, for adding the time according to the generate the 3rd, controls the pwm pulse exporting the 3rd constant displacement pump to, and described 3rd constant displacement pump controlling interpolation cycle in-built oxygen carrier agent is opened, to add described oxidant.
9. device according to claim 6, is characterized in that, also comprises:
Detecting unit, for real-time testing environment information, described environmental information comprises outage information, termination of pumping information, production information, enters one in plate information, sensor information, temperature information or its combination;
Judging unit, presets environmental abnormality condition for judging that whether described environmental information meets, described environmental abnormality condition comprise shut down abnormal, termination of pumping is abnormal, it is abnormal to stop producing, lack one in plate exception, sensor abnormality, temperature anomaly or it combines;
Stop element, adds sub-liquid for if so, stopping;
Output unit, for if so, output alarm signal.
10. an etching solution add-on system, it is characterized in that, comprise the etching solution adding set described in claim 6 to 9 any one, one proportion monitor, one hydrochloric acid monitor, one oxidant monitor, the constant displacement pump of one access clear water or electromagnetically operated valve, the constant displacement pump of one loading hydrochloric acid, and one loads the constant displacement pump of oxidant, wherein, described proportion monitor is connected with the constant displacement pump or electromagnetically operated valve accessing clear water by described etching solution adding set, described hydrochloric acid monitor is connected with the constant displacement pump loading hydrochloric acid by described etching solution adding set, described oxidant monitor is connected with the constant displacement pump loading oxidant by described etching solution adding set.
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