CN115824595A - UV curing light source uniformity detection and adjustment system - Google Patents
UV curing light source uniformity detection and adjustment system Download PDFInfo
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- 238000003848 UV Light-Curing Methods 0.000 title claims abstract description 78
- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 238000001723 curing Methods 0.000 claims abstract description 99
- 230000009471 action Effects 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 66
- 238000005286 illumination Methods 0.000 claims description 62
- 230000008569 process Effects 0.000 claims description 60
- 230000002159 abnormal effect Effects 0.000 claims description 37
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000007711 solidification Methods 0.000 claims description 13
- 230000008023 solidification Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006552 photochemical reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of UV lamp source control, and particularly discloses a UV curing light source uniformity detection and adjustment system, which comprises: the UV curing light source consists of a plurality of groups of point light sources which are independently controlled; the image acquisition assembly is used for acquiring image information of an action area of the UV curing light source; the distance sensors are uniformly arranged among the point light sources and used for detecting the vertical distance between the object and the UV curing light source; the analysis module is used for generating a light source intensity adjustment strategy according to the image information of the action area and the vertical distance data; and the adjusting module is used for executing an adjusting strategy to independently adjust the intensity of the point light source. The system can realize the uniformity detection and adjustment of the UV curing state under different operation states by comprehensively judging the adjustment of the curing light source according to the position information of the object with the actual curing state volume instead of being determined according to the light source intensity.
Description
Technical Field
The invention relates to the technical field of UV lamp source control, in particular to a UV curing light source uniformity detection and adjustment system.
Background
The UV (Ultra-Violet) lamp source is also called as an ultraviolet lamp tube, mainly utilizes the characteristics of ultraviolet rays to carry out the processes of photochemical reaction, product curing, sterilization, disinfection and the like, can be realized in various forms, and comprises point light sources, tubular light sources and surface light sources formed by arranging the point light sources, and for the lamp source in the field of UV glue curing, in order to ensure the uniformity of illumination intensity generally, the form of the surface light sources is mainly adopted, the point light sources are arranged according to a specific mode, so that the UV glue obtains uniform ultraviolet illumination effect, and the curing effect of the UV glue is better.
The existing UV curing light source uniformity detection system mainly transmits light rays with specific light intensity through a UV curing light source, and then determines the performance of the curing light source and the uniformity among point light sources through the judgment of the intensity of received light by a plurality of light intensity detection modules.
The existing UV curing light source uniformity detection system can only judge the condition of a light intensity factor, and does not consider the influence of various factors such as environmental temperature, environmental humidity and the like on the curing process, so that the test result is single, and a comprehensive reference basis cannot be provided for the whole curing process; meanwhile, with the improvement of the UV glue technology, the curing degree of the UV glue can be judged through the color change of the color-changing UV glue in each curing stage, and further the curing state of the UV glue can be judged, so that the invention provides a novel UV curing light source uniformity detection and adjustment system.
Disclosure of Invention
The invention aims to provide a system for detecting and adjusting uniformity of a UV curing light source, which solves the following technical problems:
how to realize uniformity detection and adjustment of the UV curing state under different states.
The purpose of the invention can be realized by the following technical scheme:
a UV curing light source uniformity detection adjustment system, the system comprising:
the UV curing light source consists of a plurality of groups of point light sources which are independently controlled;
the image acquisition assembly is used for acquiring image information of an action area of the UV curing light source;
the distance sensors are uniformly arranged among the point light sources and used for detecting the vertical distance between the object and the UV curing light source;
the analysis module is used for generating a light source intensity adjustment strategy according to the image information of the action area and the vertical distance data;
and the adjusting module is used for executing an adjusting strategy to independently adjust the intensity of the point light source.
Further, the working process of the analysis module is as follows:
determining the distance between each curing area plane and the UV curing light source according to the image acquisition assembly and the distance sensor;
determining a preset point light source illumination intensity strategy according to the distance between each curing area plane and the UV curing light source;
performing a pre-action process according to a preset point light source illumination intensity strategy, and determining a point light source illumination regulation strategy according to color change information of an action image area in the pre-action process;
and adjusting the illumination intensity of the UV curing light source according to a point light source illumination adjusting strategy.
Further, the process of determining the preset point light source illumination intensity strategy is as follows:
dividing image information acquired by an image acquisition component into a plurality of areas according to positions in advance;
identifying a curing area in the image information based on an image identification technology, and determining the actual position of the curing area according to the position of the curing area in the image information;
acquiring distance data of the plane of the curing area from the UV curing light source through a distance sensor corresponding to the actual position area;
and adjusting the intensity of the point light source corresponding to the curing area according to the distance data and preset conditions to generate a preset point light source illumination intensity strategy.
Further, the determination process of the point light source illumination adjustment strategy is as follows:
wherein f is an RGB curing degree conversion function;is a preset standard curve;starting time point for pre-action process;is the end time point of the pre-action process; st is a reference coefficient;
When the temperature is higher than the set temperatureThe illumination intensity of the point light source is reduced;
wherein ,the light intensity increment of the point light source is obtained;the reduction amount of the illumination intensity of the point light source is reduced; g is a transformation function; m is the area of the curing region; c is the perimeter of the curing area;is an area standard reference value;is a perimeter area ratio reference coefficient;is a preset coefficient.
Further, the process of acquiring the RGB values of the pre-acting process curing area is as follows:
uniformly selecting a plurality of acquisition points in a curing area, carrying out component decomposition on the RGB numerical value of each acquisition point, and comparing the RGB component values of each acquisition point:
if the difference value of the RGB component values of different acquisition points is larger than a preset threshold value, generating a point light source state abnormal signal;
otherwise, determining the RGB value of the solidification area in the pre-action process according to the component mean value of each acquisition point of the solidification area.
Further, the system also comprises a UV curing light source state monitoring module;
the UV curing light source state monitoring module comprises a light intensity detection assembly arranged on an action plane of the UV curing light source;
and the UV curing light source state monitoring module is used for judging the state of the UV curing light source according to the abnormal signal of the point light source state and the size of the curing value slid.
Further, the process of judging the state of the UV curing light source comprises the following steps:
when a point light source state abnormal signal is generated, judging an abnormal point light source according to the area where the RGB component abnormal acquisition point is located, controlling the illumination intensity of the abnormal point light source according to the preset light intensity step, and obtaining a light intensity detection value set through a light intensity detection assembly;
Wherein N is the number of steps with preset light intensity, i belongs to [1];Is the detection value of the ith gradient;is the detection standard value of the ith gradient;is the weight coefficient of the ith gradient;
abnormal value of light intensityAnd a predetermined threshold valueAnd (3) carrying out comparison:
Further, when the point light source performance is attenuated, the point light source performance is expressed by the formulaCalculating to obtain light intensity increment coefficient;
By incremental coefficient of light intensityPerforming incremental fine adjustment on the performance attenuation point light source;
wherein r is a first conversion function; h is a second conversion function.
The invention has the beneficial effects that:
(1) The adjustment of the curing light source is not determined only according to the intensity of the light source, but is comprehensively judged according to the position information of the object with the actual curing state volume, so that the uniformity detection and adjustment of the UV curing state can be realized under different operation states.
(2) The invention can realize the test and adjustment of the whole condition of the curing light source by judging the curing information after adjustment, realize the adaptive adjustment of point light source parameters on the basis of judging whether the curing light source is abnormal, and further provide parameter adjustment basis for the subsequent batch curing process.
(3) The invention can accurately judge the comprehensive detection conditions under different emission wavelength frequency bands by the UV curing light source state judgment method.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a UV curing light source uniformity detection and adjustment system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in one embodiment, a UV curing light source uniformity detection and adjustment system is provided, the system comprising:
the UV curing light source consists of a plurality of groups of point light sources which are independently controlled;
the image acquisition assembly is used for acquiring image information of an action area of the UV curing light source;
the distance sensors are uniformly arranged among the point light sources and used for detecting the vertical distance between the object and the UV curing light source;
the analysis module is used for generating a light source intensity adjustment strategy according to the image information of the action area and the vertical distance data;
and the adjusting module is used for executing an adjusting strategy to independently adjust the intensity of the point light source.
Through the technical scheme, the embodiment provides a system for adjusting the adaptability of a UV curing light source, which can enable UV glue to be uniformly cured and ensure the curing effect, and particularly, the embodiment utilizes the color change characteristic of the color-changing UV glue along with the curing degree, collects image information of an acting area of the UV curing light source through an image collection assembly, can judge the curing state of the UV glue through the analysis of the image information of the acting area, can determine the position of the UV glue through the identification of an object in the image information, is combined with a distance sensor uniformly arranged between point light sources, and can adjust the light source intensity independently through an adjusting module according to the obtained distance data and the image information of the acting area; obviously, in the process, the adjustment of the curing light source is not determined only according to the intensity of the light source, but is comprehensively judged according to the position information of the object in the actual curing state volume, and then the uniformity detection and adjustment of the UV curing state can be realized under different working states.
As an embodiment of the present invention, the working process of the analysis module is as follows:
determining the distance between each curing area plane and the UV curing light source according to the image acquisition assembly and the distance sensor;
determining a preset point light source illumination intensity strategy according to the distance between each curing area plane and the UV curing light source;
performing a pre-action process according to a preset point light source illumination intensity strategy, and determining a point light source illumination regulation strategy according to color change information of an action image area in the pre-action process;
and adjusting the illumination intensity of the UV curing light source according to a point light source illumination adjusting strategy.
Through the technical scheme, the working process of the analysis module of the embodiment determines the distance between each curing area plane and the UV curing light source according to the image acquisition assembly and the distance sensor; and then, determining a preset point light source illumination intensity strategy according to the distance between each curing area plane and the UV curing light source, when the strategy is executed according to the preset point light source illumination intensity strategy, ensuring that the applied light intensity is matched with the position of the point light source, then carrying out a pre-action process according to the preset point light source illumination intensity strategy, judging whether the curing process is abnormal or not according to the color change information of an action image area in the pre-action process, then determining a point light source illumination regulation strategy according to a judgment result, regulating the UV curing light source illumination intensity according to the point light source illumination regulation strategy, in the process, testing and regulating the overall condition of the curing light source can be realized by judging the regulated curing information, on the basis of judging whether the curing light source is abnormal or not, realizing the adaptive regulation of point light source parameters, and further providing parameter regulation basis for the subsequent batch curing process.
As an embodiment of the present invention, the process of determining the preset point light source illumination intensity policy includes:
dividing image information acquired by an image acquisition component into a plurality of areas according to positions in advance;
identifying a curing area in the image information based on an image identification technology, and determining the actual position of the curing area according to the position of the curing area in the image information;
acquiring distance data of a plane of the curing area from the UV curing light source through a distance sensor corresponding to the actual position area;
and adjusting the intensity of the point light source corresponding to the curing area according to the distance data and preset conditions to generate a preset point light source illumination intensity strategy.
Through the technical scheme, the process of determining the preset point light source illumination intensity strategy in the embodiment is realized by dividing image information acquired by the image acquisition assembly into a plurality of areas according to positions in advance, identifying a curing area in the image information based on an image identification technology, and determining the actual position of the curing area according to the position of the image information, wherein the image identification technology is realized by common AI identification in the prior art, and the divided areas and the actual position area establish a position corresponding relation in advance, so that the corresponding distance sensor can be determined according to the position of the curing area in the image information, the point light source intensity corresponding to the curing area is adjusted according to distance data and preset conditions, and the preset point light source illumination intensity strategy is generated, so that the initial relevant parameters of the curing area can be relatively matched with the position of the curing area, and the accuracy of a test environment is ensured; meanwhile, in the process, the position of the curing area can be automatically identified, and corresponding environment parameter deployment is automatically set according to automatic identification, so that the curing process has better intelligence.
It should be noted that the position correspondence relationship established between the divided area and the actual position area is set correspondingly according to the range of the image information and the range of the action area, and is not further detailed herein; in addition, the preset conditions are set in advance according to the relationship among the type of the UV glue, the intensity of the light and the distance, which can be obtained according to the prior art and will not be described in detail herein.
As an embodiment of the present invention, the determining process of the point light source illumination adjusting policy is as follows:
wherein f is an RGB curing degree conversion function;is a preset standard curve;starting time point for pre-action process;is the end time point of the pre-action process; st is a reference coefficient;
Through the technical scheme, the embodiment provides the determination process of the point light source illumination regulation strategy, and firstly, the time-varying data of the RGB value of the solidification area in the pre-action process is obtainedWherein the RGB values are obtained by taking the mean of several points of the solidification area, thus byAnd then the difference between the actual curing process and the standard curing process can be judged by comparing the curing value slid with a preset threshold valueMaking a comparison whenWhen the difference between the two is within the normal error range, the adjustment is not performed, and when the difference is within the normal error range, the adjustment is performedIn the process, the curing effect is relatively slow compared with the standard process, so that the curing efficiency is improved by enhancing the illumination intensity of the point light source; when in useWhen the method is used, the solidification effect is faster than a standard process, so that the solidification efficiency is properly reduced by reducing the illumination intensity of the point light source, the solidification effect in the pre-acting process can be preliminarily judged through the process, and meanwhile, a corresponding judgment basis is provided for the subsequent test process.
In the above-mentioned embodimentsObtaining a preset standard curve according to the optimal curing curve of the UV adhesive, determining an RGB curing degree conversion function f according to the curing state and the color change characteristic of the UV adhesive, and referring to a coefficient st and a preset threshold valueAnd the duration of the pre-action process is selected based on empirical data fitting, and will not be described in further detail herein.
As an embodiment of the present invention, whenTime, point light source illumination intensity increase
wherein ,is a point light source with strong illuminationDegree increase;the amount of reduction of the illumination intensity of the point light source; g is a transformation function; m is the area of the curing region; c is the perimeter of the curing area;is an area standard reference value;is a perimeter area ratio reference coefficient;is a preset coefficient.
Through the technical scheme, the numerical value for specifically adjusting the illumination intensity of the point light source is given in the embodiment, wherein when the numerical value is used as the numerical valueTime, point light source illumination intensity increase(ii) a When in useThe illumination intensity of the point light source is reducedIncrease in the intensity of point light sourceAnd reduction of illumination intensity of point light sourceThe curing area is not only related to the curing value slid, but also related to the specific characteristics of the curing area, including the area M and the perimeter C of the curing area; in addition, the conversion function g is selectively set according to a plurality of sets of data, and is thus formulatedAndthe increase amount of the illumination intensity of the point light source and the decrease amount of the illumination intensity of the point light source can be determined.
It should be noted that the area standard reference valueAnd perimeter to area ratio reference coefficientSetting according to the specification of the UV curing light source; coefficient of presettingThe setting is selected based on empirical data and will not be described in further detail herein.
As an embodiment of the present invention, the process of acquiring the RGB values of the curing region in the pre-action process is:
uniformly selecting a plurality of acquisition points in a curing area, carrying out component decomposition on the RGB numerical value of each acquisition point, and comparing the RGB component values of each acquisition point:
if the difference value of the RGB component values of different acquisition points is larger than a preset threshold value, generating a point light source state abnormal signal;
otherwise, determining the RGB value of the solidification area in the pre-action process according to the component mean value of each acquisition point of the solidification area.
According to the technical scheme, the embodiment provides a method for acquiring RGB values of a solidification area in a pre-action process, the method comprises the steps of firstly, uniformly selecting a plurality of acquisition points in the solidification area, carrying out component decomposition on RGB values of each acquisition point, comparing component values of RGB of each acquisition point, and if difference values of RGB component values of different acquisition points are compared with a preset threshold, selectively setting the preset threshold according to historical error data.
As an embodiment of the present invention, the system further includes a UV curing light source status monitoring module;
the UV curing light source state monitoring module comprises a light intensity detection assembly arranged on an action plane of the UV curing light source;
and the UV curing light source state monitoring module is used for judging the state of the UV curing light source according to the abnormal signal of the point light source state and the curing value slid.
Through the technical scheme, the system in the embodiment further comprises a UV curing light source state monitoring module; the UV curing light source state monitoring module comprises a light intensity detection assembly arranged on an action plane of the UV curing light source; judging the state of the UV curing light source according to the abnormal signal of the point light source state and the size of the curing value slid by the UV curing light source state monitoring module; obviously, on the basis of detecting the state of the UV curing light source through the light intensity detection assembly conventionally, comprehensive judgment is carried out through the size of the curing value slid, and the judgment accuracy can be improved.
As an embodiment of the present invention, the process of determining the state of the UV curing light source is as follows:
when a point light source state abnormal signal is generated, judging an abnormal point light source according to the area where the RGB component abnormal acquisition point is located, controlling the illumination intensity of the abnormal point light source according to the preset light intensity step, and obtaining a light intensity detection value set through a light intensity detection assembly;
Wherein N is the number of steps with preset light intensity, i belongs to [1];Is the detection value of the ith gradient;is the detection standard value of the ith gradient;is the weight coefficient of the ith gradient;
abnormal value of light intensityAnd a predetermined threshold valueAnd (3) carrying out comparison:
According to the scheme, the embodiment provides a method for judging the state of the UV curing light source, firstly, when a point light source state abnormal signal is generated, the abnormal point light source is judged according to the area where the RGB component abnormal acquisition point is located, the illumination intensity of the abnormal point light source is controlled according to the step of the preset light intensity, a light intensity detection value set is obtained through a light intensity detection assembly, and then a formula is used for judging the state of the UV curing light sourceCalculating to obtain the light intensity abnormal value of the point light sourceAbnormal value of light intensityThe comprehensive detection condition of the point light source under different emission wavelength bands is reflected, and the light intensity is abnormalAnd a predetermined threshold valueCarry out the comparison ifIf so, the difference between the actual light intensity detection state and the standard state is larger, so that the point light source is judged to be abnormal; if it isIf so, the correlation is slightly larger, so that the performance attenuation of the point light source is judged; if it isIf the point light source is normal, the performance of the point light source is judged to be normal, so that the performance state of the point light source can be accurately judged by the method for judging the state of the UV curing light source in the embodiment.
It should be noted that, the number N of the steps of the preset light intensity is set according to the selection,setting preset threshold value according to frequency of different light intensity rangesThen selectively drawn up according to the test data, andand will not be described in further detail herein.
As an embodiment of the present invention, when the point light source performance decays, it is passed through the formulaCalculating to obtain the light intensity increment coefficient;
Coefficient of increment by light intensityPerforming incremental fine adjustment on the performance attenuation point light source;
wherein r is a first conversion function; h is a second conversion function.
Through the technical scheme, when the performance of the point light source is attenuated, the point light source performance is attenuated according to the formulaCalculating to obtain the light intensity increment coefficientWherein, the first conversion function r and the second conversion function h are obtained by fitting according to the test data, thereby obtaining the light intensity increment coefficientThe performance of the light source is finely adjusted, so that the performance of point light source attenuation is supplemented from the aspect of emitted power, and the normal operation of the point light source is further ensured.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. A UV curing light source uniformity detection adjustment system, the system comprising:
the UV curing light source consists of a plurality of groups of point light sources which are independently controlled;
the image acquisition assembly is used for acquiring image information of an action area of the UV curing light source;
the distance sensors are uniformly arranged among the point light sources and used for detecting the vertical distance between the object and the UV curing light source;
the analysis module is used for generating a light source intensity adjustment strategy according to the image information of the action area and the vertical distance data;
and the adjusting module is used for executing an adjusting strategy to independently adjust the intensity of the point light source.
2. The system of claim 1, wherein the analysis module is configured to:
determining the distance between each curing area plane and the UV curing light source according to the image acquisition assembly and the distance sensor;
determining a preset point light source illumination intensity strategy according to the distance between each curing area plane and the UV curing light source;
performing a pre-action process according to a preset point light source illumination intensity strategy, and determining a point light source illumination regulation strategy according to color change information of an action image area in the pre-action process;
and adjusting the illumination intensity of the UV curing light source according to a point light source illumination adjusting strategy.
3. The system of claim 2, wherein the preset point light source illumination intensity strategy is determined by:
dividing image information acquired by an image acquisition component into a plurality of areas according to positions in advance;
identifying a curing area in the image information based on an image identification technology, and determining the actual position of the curing area according to the position of the curing area in the image information;
acquiring distance data of a plane of the curing area from the UV curing light source through a distance sensor corresponding to the actual position area;
and adjusting the intensity of the point light source corresponding to the curing area according to the distance data and preset conditions to generate a preset point light source illumination intensity strategy.
4. The system of claim 3, wherein the point light source illumination adjustment strategy is determined by:
wherein f is an RGB curing degree conversion function;is a preset standard curve;starting time point for pre-action process;is the end time point of the pre-action process; st is a reference coefficient;
5. The uniformity detection and adjustment system for UV curing light source according to claim 4,
wherein ,the light intensity increment of the point light source is obtained;the reduction amount of the illumination intensity of the point light source is reduced; g is a transformation function; m is the area of the curing region; c is the perimeter of the curing area;is an area standard reference value;is a perimeter area ratio reference coefficient;is a preset coefficient.
6. The system as claimed in claim 4, wherein the pre-action process curing area RGB values are obtained by:
uniformly selecting a plurality of acquisition points in a curing area, carrying out component decomposition on the RGB numerical value of each acquisition point, and comparing the RGB component values of each acquisition point:
if the difference value of the RGB component values of different acquisition points is larger than a preset threshold value, generating a point light source state abnormal signal;
otherwise, determining the RGB value of the solidification area in the pre-action process according to the component mean value of each acquisition point of the solidification area.
7. The UV curing light source uniformity detection and adjustment system according to claim 6, further comprising a UV curing light source state monitoring module;
the UV curing light source state monitoring module comprises a light intensity detection assembly arranged on an action plane of the UV curing light source;
and the UV curing light source state monitoring module is used for judging the state of the UV curing light source according to the abnormal signal of the point light source state and the curing value slid.
8. The system of claim 7, wherein the status of the UV curing light source is determined by:
when a point light source state abnormal signal is generated, judging an abnormal point light source according to the area where the RGB component abnormal acquisition point is located, controlling the illumination intensity of the abnormal point light source according to the preset light intensity step, and obtaining a light intensity detection value set through a light intensity detection assembly;
Wherein N is the number of steps with preset light intensity, i belongs to [1] ;Is the detection value of the ith gradient;is the detection standard value of the ith gradient;is the weight coefficient of the ith gradient;
abnormal value of light intensityAnd a predetermined threshold valueAnd (3) carrying out comparison:
9. The UV curing light source uniformity detection and adjustment system of claim 8, wherein when the performance of the point light source is degraded, the formula is used
By incremental coefficient of light intensityPerforming incremental fine adjustment on the performance attenuation point light source;
wherein r is a first conversion function; h is a second conversion function.
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CN117197143B (en) * | 2023-11-08 | 2024-02-02 | 深圳市聪讯智能科技有限公司 | Intelligent detection method for ambient brightness based on image features |
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