A surface plastic spraying quality detection system and method for a switch cabinet

Abstract

The present invention belongs to the technical field of powder coating quality inspection, and specifically discloses a powder coating quality inspection system and method for the surface of a switch cabinet. The system includes: an image acquisition environment detection module, a primary surface image acquisition module, a light source regulation judgment module, a light source regulation confirmation execution module, a secondary surface image acquisition module, a switch cabinet surface analysis module, a database, a non-conforming cause item confirmation module, and a quality inspection feedback terminal; by confirming the light source regulation index and performing light source regulation, the present invention improves the guarantee of the image acquisition effect during image acquisition. At the same time, through the powder coating qualification analysis from two dimensions of the powder coating adhesion state and the powder coating layer state, a multi-faceted analysis from the inside out is realized. And by confirming the non-conforming cause item of the powder coating, further traceability analysis of the reasons for the unqualified inspection is realized, providing a clear direction for the optimization of the subsequent powder coating scheme for the surface of the switch cabinet.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder coating quality inspection, and relates to a powder coating quality inspection system and method for the surface of a switch cabinet. Background Art

[0002] The powder coating on the surface of the switch cabinet is a surface treatment process. It evenly covers a layer of plastic powder on the metal surface of the switch cabinet through electrostatic spraying technology, and forms a hard and smooth coating after curing. This coating enhances the corrosion resistance and wear resistance of the switch cabinet and is an important process step to ensure the long-term stable operation of power equipment. Therefore, the requirements for the quality inspection of the powder coating on the surface of the switch cabinet are getting higher and higher.

[0003] Currently, most of the powder coating quality inspections are carried out through image inspection, and there are still the following deficiencies: 1. When the image acquisition quality is poor, manual adjustment is often carried out repeatedly, resulting in a low acquisition efficiency of the powder coating quality inspection indicators, and at the same time, the reliability of the adjustment results cannot be guaranteed.

[0004] 2. When performing image acquisition currently, the guarantee for the image acquisition effect is not strong. As an important influencing factor of image quality, the light source is not analyzed currently, and no automated targeted adjustment is carried out, which cannot improve the representativeness of the quality inspection indicators, and there is also a possibility that some detail indicators are ignored, thus affecting the evaluation result of the powder coating quality on the surface of the switch cabinet.

[0005] 3. Currently, only the result of the powder coating quality inspection is obtained, and no further traceability analysis is carried out on the reasons for the unqualified quality inspection, which cannot provide a clear direction for the optimization of the subsequent powder coating scheme on the surface of the switch cabinet, nor can it provide the pertinence for the subsequent optimization of the powder coating on the surface of the switch cabinet, thus unable to improve the qualified rate of the powder coating on the surface of the switch cabinet. Summary of the Invention

[0006] In view of this, in order to solve the problems raised in the above background art, a powder coating quality inspection system and method for the surface of a switch cabinet are proposed.

[0007] The object of the present invention can be achieved by the following technical solutions: The present invention provides a powder coating quality inspection system for the surface of a switch cabinet, and the system includes: an image acquisition environment detection module, which is used to collect the external light source information of the target switch cabinet, including the external light intensity, the number of supplementary light lamps arranged, the numbers of each supplementary light lamp, the switch state, the position of the supplementary light area, and the light intensity of each supplementary light lamp with the switch state being on.

[0008] A primary surface image acquisition module, which is used to acquire the powder coating image on the surface of the target switch cabinet.

[0009] A light source regulation judgment module, which is used to judge the light source regulation requirement. When the judgment result is non-requirement, the switch cabinet surface analysis module is executed.

[0010] A light source control confirmation execution module, which is used to confirm the light source control index and perform light source control when the judgment result is a requirement.

[0011] A surface image secondary acquisition module, which is used to perform powder coating image acquisition on the surface of the target switchgear again after the light source control is completed.

[0012] A switchgear surface analysis module, which is used to analyze the powder coating qualification index on the surface of the target switchgear according to the acquired powder coating image, and perform powder coating status judgment. When the judgment result is qualified, the quality inspection feedback terminal is started; otherwise, the unqualified cause confirmation module is started.

[0013] A database, which is used to store the maximum allowable light source intensity of the supplementary light and store the reference powder coating chromaticity value of the corresponding surface of the target switchgear.

[0014] An unqualified cause item confirmation module, which is used to confirm the unqualified cause items of the powder coating.

[0015] A quality inspection feedback terminal, which is used to feedback the powder coating qualification index and the unqualified cause items of the powder coating to the relevant powder coating management personnel on the surface of the target switchgear.

[0016] Further, the performing of the powder coating image acquisition includes: performing image acquisition on the surface of the target switchgear through a high-definition camera, and taking the acquired image as the powder coating high-definition image.

[0017] Performing image acquisition on the surface of the target switchgear through an X-ray detector, and taking the acquired image as the powder coating ray image.

[0018] Further, the performing of the light source control requirement judgment includes: identifying the resolution, brightness, and contrast from the powder coating high-definition image, and respectively denoting them as 、 and 。

[0019] Statistical imaging quality qualification degree of the powder coating high-definition image , , 、 、 、 and are respectively the set reference resolution, brightness, contrast, brightness difference, and contrast difference.

[0020] When the imaging quality qualification degree is less than the set reference imaging quality qualification degree, the requirement is taken as the light source control requirement judgment result; otherwise, the non-requirement is taken as the light source control requirement judgment result.

[0021] Further, the confirmation of the light source regulation index includes: according to the positions of the supplementary light areas of each supplementary light, the supplementary light areas are circled in the spray-coated high-definition image to obtain the images of the circled supplementary light areas, and according to the The imaging quality qualification degree of each supplementary light area is statistically analyzed in the same way, and then the light source adjustment type of each supplementary light area is confirmed. The light source adjustment type is one of increasing and decreasing.

[0022] If the light source adjustment type of a certain supplementary light area is decreasing, mark this supplementary light area as a decreasing area, and extract the switch state of the supplementary light corresponding to the decreasing area. If the switch state of the supplementary light corresponding to the decreasing area is off, extract each adjacent supplementary light area corresponding to the decreasing area from the spray-coated high-definition image, mark them as adjacent areas, extract the central offset between each adjacent area and the decreasing area and the switch states of the supplementary lights corresponding to each adjacent area, and mark the supplementary lights with the switch state of on as associated supplementary lights, and count the number of associated supplementary lights, marked as .

[0023] Extract the imaging quality qualification degree of the decreasing area, marked as , and statistically analyze the light source influence tendency degree of the decreasing area . . is the set reference imaging quality qualification degree.

[0024] If . is the set reference light source influence tendency degree, match and compare with the reference light source off ratio corresponding to each set light source influence tendency degree interval to obtain the matched reference light source off ratio , and then statistically analyze the increased number of turned-off supplementary lights in the adjacent areas of the decreasing area . . represents the ceiling symbol.

[0025] Sort each adjacent area in ascending order according to the central offset between it and the decreasing area, and select the top adjacent areas as the increased turned-off areas, and then use the maintained off state of the supplementary light corresponding to the decreasing area and each increased turned-off area as the light source regulation index.

[0026] If , extract the light source intensity of each associated supplementary light, marked as . is the associated supplementary light number. . is matched and compared with the reference light source weakening ratio corresponding to each set light source influence tendency degree interval to obtain the matched reference light source weakening ratio , and then obtain the adjusted light source intensities of each associated supplementary light , , and take maintaining the off state of the supplementary lights corresponding to the reduced area and the adjusted light source intensities of each associated supplementary light as the light source control index.

[0027] If the switch state of the supplementary light corresponding to the reduced area is on, confirm the light source control index of the reduced area.

[0028] If the light source adjustment type of a supplementary light area is to increase, mark this supplementary light area as an increased supplementary light area, and confirm the light source control index of the increased supplementary area in the same way as the confirmation method of the light source control index corresponding to the reduced supplementary light area.

[0029] Further, the confirmation of the light source adjustment type of each supplementary light area includes: if the external light intensity is less than the set appropriate light intensity and the imaging quality qualification degree of a certain supplementary light area is less than 0, then increasing is used as the light source adjustment type.

[0030] If the external light intensity is greater than the set appropriate light intensity and the imaging quality qualification degree of a certain supplementary light area is less than 0, then reducing is used as the light source adjustment type.

[0031] Further, the confirmation of the light source control index of the reduced area includes: comparing and matching the reduced ratio of the reference light source corresponding to the set influence trend degree intervals of each light source to obtain the matched reduced ratio of the reference light source , and statistically calculate the adjusted light source intensity corresponding to the reduced area , , .

[0032] Confirm each increased and reduced area in the same way as the confirmation method of each increased and closed area, and confirm the adjusted light source intensity of the supplementary lights corresponding to each increased and reduced area in the same way as the confirmation method of the adjusted light source intensity corresponding to the reduced area.

[0033] Take the adjusted light source intensity corresponding to the reduced area and the adjusted light source intensities of the supplementary lights corresponding to each increased and reduced area as the light source control index of the reduced area.

[0034] Further, the analysis of the powder coating qualification index on the surface of the target switch cabinet includes: identifying the peeling number, peeling height and peeling area at each peeling point, peeling-off number, peeling-off area, spot number, spot area, color number, and chromaticity values corresponding to each color from the high-definition powder coating image.

[0035] Record the peeling-off number and the total peeling-off area as and respectively, and statistically calculate the peeling-off influence degree on the surface of the target switch cabinet , , and They are the set reference number of peelings and the peeling area respectively.

[0036] According to the number of peelings, the peeling height at each peeling point, and the peeling area, the peeling influence degree on the surface of the target switchgear cabinet is statistically calculated and denoted as .

[0037] Take as the conformity degree of the powder coating adhesion state of the target switchgear cabinet, denoted as , and are the influence weights corresponding to the conformity evaluation of the powder coating adhesion state for the peeling influence degree and the peeling influence degree respectively, , and .

[0038] According to the number of colors and the chromaticity values corresponding to each color, the color difference degree of the coating is statistically calculated and denoted as .

[0039] Extract the powder coating ray image from the powder coating image, and then identify the number of bubbles, the bubble area, the number of drips, the drip area at each drip point, and the drip thickness.

[0040] According to the analysis method, similarly analyze and obtain the speckle influence degree and the bubble influence degree on the surface of the target switchgear cabinet, denoted as and respectively.

[0041] According to the analysis method, similarly analyze and obtain the drip influence degree on the surface of the target switchgear cabinet, denoted as , take as the conformity degree of the powder coating state of the target switchgear cabinet, denoted as , , , and are the influence weights corresponding to the conformity evaluation of the powder coating state for the set coating color difference degree, the speckle influence degree, the bubble influence degree, and the drip influence degree respectively, , and .

[0042] Take as the powder coating qualification index on the surface of the target switchgear cabinet, and are the reference weights of the conformity degrees of the set powder coating adhesion state and the powder coating state respectively, , and .

[0043] Furthermore, the statistical calculation of the coating color difference degree includes: extracting the reference powder coating chromaticity value corresponding to the surface of the target switchgear cabinet from the database, denoted as .

[0044] Record the number of colors and the chromaticity values corresponding to each color as and , is the chromaticity value number corresponding to the color, , and statistically calculate the color difference degree of the coating , , and are the set permitted number of colors and the chromaticity value difference respectively.

[0045] Furthermore, the identified cause items for the unqualified powder coating on the surface of the target switchgear cabinet include: when , then insufficient coating viscosity is taken as the cause item for unqualified powder coating.

[0046] When , extract the spot influence degree , bubble influence degree , dripping influence degree and the color difference degree of the coating .

[0047] If , then uneven coating is taken as the cause item for unqualified powder coating.

[0048] If , then uneven coating viscosity is taken as the cause item for unqualified powder coating.

[0049] If , then poor spraying environment is taken as the cause item for unqualified powder coating.

[0050] If , then too high coating viscosity is taken as the cause item for unqualified powder coating.

[0051] The present invention also provides a method for detecting the quality of powder coating on the surface of a switchgear cabinet. The specific steps of this method are as follows: Step 1: Image acquisition environment detection: Collect the external light source information within the detection area corresponding to the target switchgear cabinet.

[0052] Step 2: Primary surface image acquisition: Conduct a primary powder coating image acquisition on the surface of the target switchgear cabinet to obtain the first acquired powder coating image.

[0053] Step 3: Light source regulation judgment: Make a judgment on the need for light source regulation. When the judgment result is non - need, execute Step 6. When the judgment result is need, execute Step 4.

[0054] Step 4: Light source regulation confirmation and execution: Confirm the light source regulation index and perform light source regulation.

[0055] Step 5. Secondary acquisition of surface image: After the light source regulation is completed, the powder coating image of the surface of the target switchgear is collected again.

[0056] Step 6. Judgment of powder coating state: Analyze the powder coating qualification index of the surface of the target switchgear, and judge the powder coating state accordingly. When the judgment result is qualified, execute Step 8; otherwise, execute Step 7.

[0057] Step 7. Confirmation of unqualified cause items: Confirm the unqualified cause items of the powder coating.

[0058] Step 8. Feedback of quality inspection: Feed back the powder coating qualification index and the unqualified cause items of the powder coating to the relevant management personnel of the powder coating on the surface of the target switchgear.

[0059] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By judging the light source regulation requirements and performing light source regulation, the present invention avoids the cumbersome and long-period deficiencies of the current manual repeated regulation, thereby improving the acquisition efficiency of quality inspection indicators and ensuring the reliability of the regulation results.

[0060] (2) By delineating the supplementary light area according to the position of the supplementary light area of the supplementary light lamp, and according to the switch state of the supplementary light lamp corresponding to the supplementary light area and the qualified degree of the imaging quality, and confirming the light source regulation index, and then performing light source regulation, the present invention improves the guarantee of the image acquisition effect during image acquisition, fully considers the influence of the external light source on the image quality, realizes the automatic targeted regulation of the external light source, improves the representativeness of the quality inspection indicators, and reduces the possibility of ignoring the detail indicators, thereby improving the rationality and reference of the evaluation result of the powder coating quality on the surface of the switchgear.

[0061] (3) By analyzing the powder coating qualification from two dimensions of the powder coating adhesion state and the powder coating layer state, the present invention realizes the multi-faceted analysis from the inside to the outside. At the same time, by confirming the unqualified cause items of the powder coating, the present invention realizes the further traceability analysis of the reasons for the unqualified detection, provides a clear direction for the optimization of the subsequent powder coating scheme on the surface of the switchgear, improves the pertinence of the subsequent powder coating optimization on the surface of the switchgear, and thus improves the subsequent qualified rate of the powder coating on the surface of the switchgear. Description of the Drawings

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0063] Figure 1 It is a schematic diagram of the connection of each module of the system of the present invention.

[0064] Figure 2 This is the flowchart of the implementation steps of the method of the present invention. Specific implementation manners

[0065] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0066] Please refer to Figures 1 to 2 As shown, the present invention provides a surface powder coating quality detection system for switchgear, and the system includes: an image acquisition environment detection module, a primary surface image acquisition module, a light source regulation judgment module, a light source regulation confirmation execution module, a secondary surface image acquisition module, a switchgear surface analysis module, a database, a non-conforming cause item confirmation module, and a quality detection feedback terminal.

[0067] Among the above, the light source regulation judgment module is respectively connected to the image acquisition environment detection module, the primary surface image acquisition module, the switchgear surface analysis module, and the light source regulation confirmation execution module. The secondary surface image acquisition module is respectively connected to the light source regulation confirmation execution module, the database, and the switchgear surface analysis module. The switchgear surface analysis module is respectively connected to the database and the non-conforming cause item confirmation module. The non-conforming cause item confirmation module is also connected to the quality detection feedback terminal.

[0068] The image acquisition environment detection module is used to collect the external light source information of the target switchgear, including the external light intensity, the number of arranged supplementary lights, the numbers of each supplementary light, the switch states, the positions of the supplementary light areas, and the light intensities of the supplementary lights with the switch states being on.

[0069] The primary surface image acquisition module is used to collect the powder coating image of the target switchgear surface.

[0070] Exemplarily, the collecting the powder coating image includes: collecting the image of the target switchgear surface through a high-definition camera, and taking the collected image as the powder coating high-definition image.

[0071] Collecting the image of the target switchgear surface through an X-ray detector, and taking the collected image as the powder coating ray image.

[0072] The light source regulation judgment module is used to judge the light source regulation requirement. When the judgment result is non-requirement, the switchgear surface analysis module is executed.

[0073] Exemplarily, the determination of the light source regulation requirement includes: identifying the resolution, brightness, and contrast from the spray painting high-definition image, denoted as , and respectively.

[0074] Statistical imaging quality qualification of the spray painting high-definition image , , , , , and are the resolution, brightness, contrast, brightness difference, and contrast difference set as references respectively.

[0075] When the imaging quality qualification is less than the set reference imaging quality qualification, the requirement is taken as the result of the light source regulation requirement determination; otherwise, the non-requirement is taken as the result of the light source regulation requirement determination.

[0076] The light source regulation confirmation execution module is used to confirm the light source regulation index and perform light source regulation when the determination result is a requirement.

[0077] Exemplarily, the confirmation of the light source regulation index includes: according to the light supplement area positions of each supplementary light, the images of the circled light supplement areas are obtained by circling the light supplement areas in the spray painting high-definition image. According to the statistical method, the imaging quality qualification of each light supplement area is statistically obtained in the same way, and then the light source adjustment type of each light supplement area is confirmed. The light source adjustment type is one of increasing and decreasing.

[0078] Further, the confirmation of the light source adjustment type of each light supplement area includes: if the external light intensity is less than the set appropriate light intensity and the imaging quality qualification of a certain light supplement area is less than 0, increasing is taken as the light source adjustment type.

[0079] If the external light intensity is greater than the set appropriate light intensity and the imaging quality qualification of a certain light supplement area is less than 0, decreasing is taken as the light source adjustment type.

[0080] If the light source adjustment type of a certain light supplement area is decreasing, this light supplement area is denoted as the decreasing area, and the switch state of the supplementary light corresponding to the decreasing area is extracted.

[0081] If the switch state of the supplementary light corresponding to the decreasing area is off, the adjacent light supplement areas corresponding to the decreasing area are extracted from the spray painting high-definition image, denoted as each adjacent area. The central offset between each adjacent area and the decreasing area and the switch states of the supplementary lights corresponding to each adjacent area are extracted, and the supplementary lights with the switch state on are denoted as associated supplementary lights. The number of associated supplementary lights is statistically obtained and denoted as .

[0082] In the embodiment of the present invention, by judging the requirements for light source regulation and performing light source regulation, the cumbersome and long-period deficiencies of current manual repeated regulation are avoided, thereby improving the acquisition efficiency of quality inspection indicators and ensuring the reliability of the regulation results at the same time.

[0083] It should be added that when the edges of two supplementary lighting areas are tangent or intersecting, it is determined that the two supplementary lighting areas are in an adjacent relationship, that is, one of the supplementary lighting areas can be used as the adjacent supplementary lighting area of the other supplementary lighting area.

[0084] When two supplementary lighting areas are neither tangent nor intersecting and are on the same side, and when the center distance between the two supplementary lighting areas is less than of the size of the side where they are located, it is determined that the two supplementary lighting areas are in an adjacent relationship, that is, one of the supplementary lighting areas can be used as the adjacent supplementary lighting area of the other supplementary lighting area.

[0085] Extract the image quality qualification degree of the area with reduced size, denoted as and statistically calculate the light source influence tendency degree of the area with reduced size. is the set reference imaging quality qualification degree.

[0086] If is the set reference light source influence tendency degree, match and compare with the reference light source off ratio corresponding to each set light source influence tendency degree interval to obtain the matched reference light source off ratio , and then statistically calculate the number of additional off supplementary lighting lamps in the adjacent area of the area with reduced size. represents the ceiling symbol.

[0087] It should be added that when , and , this belongs to the critical influence tendency, that is, just affected by the light source. At this time, the light source influence tendency degree takes the value of 0.5. Therefore, taking 0.5 as the dividing line, the influence tendency degree interval is divided. Specifically, it can be divided into , and .

[0088] Sort each adjacent area in ascending order according to the center offset between it and the area with reduced size, and select the top adjacent areas as each additional off area, and then take the off state of the supplementary lighting lamp corresponding to the area with reduced size and each additional off area as the light source regulation index.

[0089] If Extract the light source intensity of each associated supplementary light, denoted as , is the number of the associated supplementary light, , and match and compare with the reference light source attenuation ratios corresponding to the set light source influence tendency degree intervals to obtain the matched reference light source attenuation ratios , and then obtain the adjusted light source intensities of each associated supplementary light , , and take the closed state of the supplementary light corresponding to the area to be reduced and the adjusted light source intensities of each associated supplementary light as the light source control index.

[0090] It should be added that, in order to ensure a small light source difference, the regulation is carried out according to the same reference light source attenuation ratio.

[0091] If the switch state of the supplementary light corresponding to the area to be reduced is on, confirm the light source control index of the area to be reduced.

[0092] Furthermore, the confirmation of the light source control index of the area to be reduced includes: comparing with the reference light source attenuation ratios corresponding to the set light source influence tendency degree intervals to obtain the matched reference light source attenuation ratios , and count the adjusted light source intensities corresponding to the area to be reduced , .

[0093] In the same way as the confirmation method for each increased closed area, confirm each increased attenuation area, and in the same way as the confirmation method for the adjusted light source intensities corresponding to the area to be reduced, confirm the adjusted light source intensities of the supplementary lights corresponding to each increased attenuation area.

[0094] Take the adjusted light source intensities corresponding to the area to be reduced and the adjusted light source intensities of the supplementary lights corresponding to each increased attenuation area as the light source control index of the area to be reduced.

[0095] If the light source adjustment type of a supplementary light area is to increase, mark this supplementary light area as an increased supplementary light area, and in the same way as the confirmation method for the light source control index corresponding to the reduced supplementary light area, confirm the light source control index of the increased supplementary area.

[0096] It should be added that the specific analysis method for the light source control index of the increased supplementary area: if the light source adjustment type of a supplementary light area is to increase, mark this supplementary light area as an increased area, and extract the switch state of the supplementary light corresponding to the increased area.

[0097] If the switch state of the supplementary light corresponding to the increased area is on, extract each adjacent supplementary light area corresponding to the increased area from the surface-sprayed ordinary image, denoted as each adjacent area, extract the switch states of the supplementary lights corresponding to each adjacent area, and denote the number of supplementary lights corresponding to the adjacent areas as 。

[0098] According to the statistical method, the light source influence tendency degree of the enlarged area is similarly statistically obtained 。

[0099] Extract the maximum allowable light source intensity of the supplementary light from the database, denoted as 。

[0100] Extract the light source intensity of the supplementary light corresponding to the enlarged area, denoted as , and match and compare with the reference light source supplementary increase ratio corresponding to each light source influence tendency degree interval set, to obtain the matching light source supplementary increase ratio of the enlarged area , and further statistically obtain the light source intensity corresponding to the enlarged area , 。

[0101] According to the confirmation method of each increased and closed area corresponding to the reduced area, similarly confirm each adjacent enlarged area, and then according to the statistical method, similarly statistically obtain the adjusted light source intensity corresponding to each adjacent enlarged area.

[0102] Take the corresponding adjusted light source intensity of the enlarged area and each adjacent enlarged area as the light source control index of the enlarged area.

[0103] If the switch state of the supplementary light corresponding to the enlarged area is off, turn on the supplementary light corresponding to the enlarged area as the light source control index.

[0104] In the embodiment of the present invention, by demarcating the supplementary light area according to the position of the supplementary light area of the supplementary light, and according to the switch state of the supplementary light corresponding to the supplementary light area and the imaging quality qualification degree, and confirming the light source control index, and then performing light source control, the guarantee for the image acquisition effect during image acquisition is improved, the influence of the external light source on the image quality is fully considered, the automatic targeted control of the external light source is realized, the representativeness of the quality detection index is improved, and at the same time the possibility of neglecting the detail index is reduced, thereby improving the rationality and reference of the evaluation result of the surface plastic spraying quality of the switch cabinet.

[0105] The switch cabinet surface analysis module is used to analyze the plastic spraying qualification index on the surface of the target switch cabinet according to the collected plastic spraying image, and perform plastic spraying state judgment. When the judgment result is qualified, start the quality detection feedback terminal, otherwise start the unqualified cause confirmation module.

[0106] Exemplarily, the powder coating qualification index on the surface of the target switchgear cabinet includes: identifying the peeling number, the peeling height and peeling area at each peeling point, the shedding number, the shedding area, the spot number, the spot area, the color number, and the chromaticity values corresponding to each color from the high-definition powder coating image.

[0107] It should be added that the peeling area refers to the area of the projection corresponding to the peeling point on the surface of the switchgear cabinet.

[0108] Denote the shedding number and the total shedding area as and , and statistically calculate the shedding influence degree , , and are the set reference shedding number and shedding area respectively.

[0109] According to the peeling number, the peeling height and peeling area at each peeling point, statistically calculate the peeling influence degree on the surface of the target switchgear cabinet, denoted as .

[0110] It should be added that the specific statistical process for statistically calculating the peeling influence degree on the surface of the target switchgear cabinet is: extract the maximum peeling height and the maximum peeling area from the peeling height and peeling area at each peeling point, denoted as and respectively, and denote the peeling number as .

[0111] Statistically calculate the peeling influence degree on the surface of the target switchgear cabinet, denoted as , , , and are the set reference peeling number, maximum peeling area and maximum peeling height respectively.

[0112] Take as the powder coating adhesion state conformity degree of the target switchgear cabinet, denoted as , and are the influence weights corresponding to the shedding influence degree and the peeling influence degree for the powder coating adhesion state conformity evaluation respectively, , and .

[0113] It should be added that shedding seriously affects the product quality, and peeling is the state before shedding. Therefore, set the influence weight corresponding to the shedding influence degree for the powder coating adhesion state conformity evaluation to be greater than the influence weight corresponding to the peeling influence degree. For the convenience of analysis, the specific values can be and .

[0114] According to the number of colors and the chromaticity values corresponding to each color, the color difference degree of the coating is statistically calculated and denoted as .

[0115] Furthermore, the statistical calculation of the color difference degree of the coating includes: extracting the reference spray painting chromaticity value of the corresponding surface of the target switchgear from the database, denoted as .

[0116] The number of colors and the chromaticity values corresponding to each color are respectively denoted as and , is the chromaticity value number corresponding to the color, , and the color difference degree of the coating is statistically calculated , , and are respectively the set reference number of colors and the chromaticity value difference.

[0117] It should be added that spray painting is usually single-color spray painting, and the present invention analyzes in the scenario of single-color spray painting.

[0118] Extract the spray painting ray image from the spray painting image, and then identify the number of bubbles, the area of bubbles, the number of drips, the drip area and the drip thickness at each drip location.

[0119] According to the analysis method of , similarly analyze and obtain the spot influence degree and the bubble influence degree of the surface of the target switchgear, which are respectively denoted as and .

[0120] According to the analysis method of , similarly analyze and obtain the drip influence degree of the surface of the target switchgear, denoted as , and take as the matching degree of the spray painting coating state of the target switchgear, denoted as , , , and are respectively the set influence weights corresponding to the spray painting coating state matching evaluation of the coating color difference degree, the spot influence degree, the bubble influence degree and the drip influence degree, , and .

[0121] It should be added that the influence weights of the coating color difference degree, the influence degree of spots, the influence degree of bubbles, and the influence degree of dripping on the evaluation of the conformity of the spray coating state are set according to the final presentation effect of the coating. Generally speaking, the color difference degree, the influence degree of spots and dripping have a greater impact on the appearance quality, so higher weights can be assigned. The influence degree of bubbles is set according to the number of bubbles and other situations. For the convenience of analysis, the specific values of the influence weights for conformity evaluation can be , , and .

[0122] Taking as the qualified index of the spray coating on the surface of the target switchgear cabinet, and are the reference weight coefficients for the conformity of the spray coating adhesion state and the spray coating state respectively, , and .

[0123] It should be added that the reference weight coefficients for the conformity of the spray coating adhesion state and the spray coating state are set according to the quality and appearance of the coating on the surface of the switchgear cabinet. When the spray coating adhesion state is poor, it directly indicates that the quality inspection of the spray coating on the surface of the switchgear cabinet is unqualified. Therefore, the reference weight coefficient for the conformity of the spray coating adhesion state is set to be greater than the reference weight coefficient for the conformity of the spray coating state. For the convenience of analysis, the specific values can be and .

[0124] The database is used to store the reference spray coating chromaticity values corresponding to the surface of the target switchgear cabinet.

[0125] The unqualified cause item confirmation module is used to confirm the unqualified cause items of the spray coating.

[0126] It should be added that the analysis scenario of the present invention is defaulted to that the board on the surface of the switchgear cabinet is properly processed and passes the inspection, and at the same time, the coating formula is in a reasonable state, that is, the influence of the formula ratio and the board surface on the unqualified spray coating is not considered.

[0127] It should be added that the reference number of peeling, peeling area, number of peeling places, maximum peeling area, maximum peeling height, number of peeling, maximum peeling area and maximum peeling height are all extracted from the surface quality inspection technology table of the switchgear cabinet.

[0128] Exemplarily, the confirmation of the unqualified cause items of the spray coating on the surface of the target switchgear cabinet includes: when , the insufficient coating viscosity is taken as the unqualified cause item of the spray coating.

[0129] When , the influence degree of spots on the surface of the target switchgear cabinet is extracted , Bubble influence degree , Dripping influence degree and coating color difference degree .

[0130] If , then consider the uneven coating as the cause of unqualified powder coating.

[0131] If , then consider the uneven coating viscosity as the cause of unqualified powder coating.

[0132] If , then consider the poor spraying environment as the cause of unqualified powder coating.

[0133] If , then consider the too high coating viscosity as the cause of unqualified powder coating.

[0134] In a specific embodiment, it is default that a single item of the cause items for unqualified conformity of the powder coating layer state of the target switchgear is established. The confirmation example process when there are multiple cause items for non - conformity is supplemented as follows: If and are both established at the same time, then consider the uneven coating and the uneven coating viscosity as the cause items for unqualified powder coating.

[0135] If and are both established at the same time, then consider the uneven coating and the poor spraying environment as the cause items for unqualified powder coating.

[0136] If and are both established at the same time, then consider the uneven coating and the too high coating viscosity as the cause items for unqualified powder coating.

[0137] If and are both established at the same time, then consider the uneven coating viscosity and the poor spraying environment as the cause items for unqualified powder coating.

[0138] If and are both established at the same time, then consider the uneven coating viscosity and the too high coating viscosity as the cause items for unqualified powder coating.

[0139] If and are both established at the same time, then consider the poor spraying environment and the too high coating viscosity as the cause items for unqualified powder coating.

[0140] If , and are all established at the same time, then consider the uneven coating, the uneven coating viscosity and the poor spraying environment as the cause items for unqualified powder coating.

[0141] If and and hold simultaneously, then uneven coating, uneven coating viscosity, and excessive coating viscosity are regarded as the leading causes of unqualified powder coating on the switchgear surface.

[0142] If and and hold simultaneously, then uneven coating viscosity, poor spraying environment, and excessive coating viscosity are regarded as the leading causes of unqualified powder coating on the switchgear surface.

[0143] If and and and hold simultaneously, then uneven coating, uneven coating viscosity, poor spraying environment, and excessive coating viscosity are regarded as the leading causes of unqualified powder coating on the switchgear surface.

[0144] The quality inspection feedback terminal is used to feedback the qualified index of powder coating and the leading causes of unqualified powder coating to the powder coating-related management personnel on the surface of the target switchgear.

[0145] In the embodiment of the present invention, by analyzing the qualified powder coating from two dimensions of the powder coating adhesion state and the powder coating layer state, a multi-faceted analysis from the inside out is realized. At the same time, by confirming the leading causes of unqualified powder coating, a further traceability analysis of the reasons for unqualified detection is realized, providing a clear direction for the optimization of the subsequent powder coating scheme on the switchgear surface, improving the pertinence of the subsequent powder coating optimization on the switchgear surface, and thus improving the qualified rate of the subsequent powder coating on the switchgear surface.

[0146] The above content is only an example and illustration of the concept of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should fall within the protection scope of the present invention.

Claims

1. A surface plastic spraying quality detection system for switch cabinets, characterized in that: The system includes: The image acquisition environment detection module collects the external light source information of the target switch cabinet, including the external light intensity, the number of deployed fill lights, the number of each fill light, the switch status, the position of the fill light area, and the light source intensity of each fill light when the switch status is on; The surface image primary acquisition module acquires the spray-coated image of the target switch cabinet surface; The light source control judgment module determines the light source control demand. When the judgment result is no demand, the switch cabinet surface analysis module is executed; Determine the need for light source control, including: Identify the resolution, brightness, and contrast from the spray-coated high-definition image, denoted as , and ; Statistically evaluate the imaging quality qualification of the spray-painted high-definition images , , , , , and are the resolution, brightness, contrast, brightness difference, and contrast difference set as references respectively; When the imaging quality qualification is less than the set reference imaging quality qualification, the demand is taken as the result of the light source regulation demand judgment, otherwise the non-demand is taken as the result of the light source regulation demand judgment; The light source control confirmation execution module confirms the light source control index and performs light source control when the judgment result is a demand; The secondary surface image acquisition module acquires the spray-coated image of the target switch cabinet surface again after the light source control is completed; The switch cabinet surface analysis module analyzes the spray-coating qualified index of the target switch cabinet surface according to the collected spray-coating image, and judges the spray-coating status. If the judgment result is qualified, the quality inspection feedback terminal is started, otherwise the unqualified cause confirmation module is started; A database stores the maximum permitted light intensity of the fill light and the reference spray color value of the corresponding surface of the target switch cabinet; Unqualified cause item confirmation module, confirming the unqualified cause items of plastic spraying; The quality inspection feedback terminal feeds back the spraying qualified index and spraying unqualified cause items to the spraying related managers on the surface of the target switch cabinet; Analyze the spray-coated qualified index of the target switch cabinet surface, including: Identify the number of peelings, the peeling height and peeling area of each peeling location, the number of sheddings, the shedding area, the number of spots, the spot area, the number of colors and the chromaticity value corresponding to each color from the high-definition image of the sprayed plastic; Record the number of shedding and the total shedding area as and respectively, and calculate the shedding impact degree on the surface of the target switchgear. and are the number of shedding and the shedding area set as the reference respectively;​ According to the number of peeling areas, the peeling height and the peeling area at each peeling area, the peeling influence degree on the surface of the target switchgear is counted and denoted as ; Take as the conformity degree of the powder coating adhesion state of the target switch cabinet, denoted as , and are the influence weights corresponding to the powder coating adhesion state evaluation of the peeling influence degree and the peeling influence degree respectively, , and ; According to the number of colors and the chromaticity values corresponding to each color, the color difference degree of the coating is statistically calculated and denoted as ; Extract the spraying X-ray image from the spraying image, and then identify the number of bubbles, bubble area, number of drops, drop area of each drop and drop thickness; According to , the influence degrees of spots and bubbles on the surface of the target switchgear are analyzed in the same way, and are respectively denoted as and ; According to the analysis method, the dripping influence degree on the surface of the target switchgear is analyzed in the same way and denoted as , and is used as the conformity degree of the sprayed plastic coating state of the target switchgear, denoted as , , , and are the influence weights of the set coating color difference degree, spot influence degree, bubble influence degree and dripping influence degree on the evaluation of the conformity of the sprayed plastic coating state respectively, , and ; Take as the qualified index of the sprayed plastic on the surface of the target switchgear cabinet, and are respectively the reference weights for the coincidence degree of the set sprayed plastic adhesion state and the sprayed plastic coating state, , and ; Statistical coating color differences, including: Extract the reference powder coating chromaticity value corresponding to the surface of the target switchgear from the database and denote it as ; Let the number of colors and the chromaticity values corresponding to each color be denoted as and respectively. Let be the number corresponding to the chromaticity value of the color. Calculate the color difference degree of the coating. Let and be the set permitted number of colors and the chromaticity value difference respectively; and be the set permitted number of colors and the chromaticity value difference respectively. Confirm the unqualified causes of the spraying failure on the surface of the target switch cabinet, including: When the insufficient paint viscosity is taken as the cause item for unqualified powder coating. When extract the spot influence degree , bubble influence degree , dripping influence degree and coating color difference degree ; If , then consider the uneven coating as the cause of unqualified powder coating. If , then consider the uneven coating viscosity as the cause of unqualified powder coating. If , then consider poor spraying environment as the cause of unqualified powder coating If , the excessive paint viscosity is taken as the cause item for unqualified powder coating.

2. The surface plastic spraying quality detection system for switchgear cabinets according to claim 1, characterized in that: The step of collecting the spraying images comprises: The surface of the target switch cabinet is imaged by a high-definition camera, and the image obtained is used as a high-definition image of the spray-coated product; The surface of the target switch cabinet is imaged by an X-ray detector, and the image obtained is used as a spray-painted X-ray image.

3. A surface plastic spraying quality detection system for a switch cabinet according to claim 1, characterized in that: The step of confirming the light source control index includes: According to the positions of the supplementary light areas of each supplementary light, the supplementary light areas are delineated in the spray-coated high-definition image to obtain the images of the delineated supplementary light areas. In the same way as the statistical method of , the imaging quality qualification degrees of each supplementary light area are statistically calculated, and then the light source adjustment types of each supplementary light area are confirmed. The light source adjustment type is one of increasing and decreasing. If the light source adjustment type of a supplementary light area is to reduce, mark this supplementary light area as a reduction area, and extract the on / off state of the supplementary light corresponding to the reduction area; if the on / off state of the supplementary light corresponding to the reduction area is off, extract each adjacent supplementary light area corresponding to the reduction area from the spray-coated high-definition image, mark it as each adjacent area, extract the center offset between each adjacent area and the reduction area and the on / off state of the supplementary light corresponding to each adjacent area, and mark the supplementary light with the on / off state of on as the associated supplementary light, and count the number of associated supplementary lights. ; Extract the image quality qualification degree of the reduced area, denoted as , and statistically calculate the light source influence tendency degree of the reduced area , , is the set reference imaging quality qualification degree; If , is to set the influence tendency degree of the reference light source, match and compare the reference light source turn-off ratios corresponding to the set influence tendency degree intervals of each light source to obtain the matched reference light source turn-off ratio , and then count the increased number of supplementary light lamps turned off in the adjacent area of the area where the light is dimmed , , , represents the ceiling symbol; Sort each adjacent area in ascending order according to the center offset between it and the area to be reduced, and screen out the top adjacent areas as each additional closed area, and then use maintaining the off state of the supplementary light corresponding to the area to be reduced and each additional closed area as the light source control index; If , extract the light source intensity of each associated fill light, denoted as , is the associated fill light number, , and match and compare with the reference light source attenuation ratio corresponding to each set light source influence trend interval to obtain the matched reference light source attenuation ratio , and then obtain the adjusted light source intensity of each associated fill light, , and use the closed state of the fill light corresponding to the maintained dimming area and the adjusted light source intensity of each associated fill light as the light source control index; If the fill light corresponding to the reduced area is on, confirm the light source control index of the reduced area; If the light source adjustment type of a fill light area is to increase, the fill light area is recorded as the increase fill light area, and the light source control index of the increase fill light area is confirmed in the same way as the light source control index corresponding to the decrease fill light area.

4. A surface plastic spraying quality detection system for a switch cabinet according to claim 3, characterized in that: The step of determining the light source adjustment type of each fill light area includes: If the external light intensity is less than the set appropriate light intensity, and the imaging quality qualification of a fill light area is less than 0, increase it as the light source adjustment type; If the external light intensity is greater than the set appropriate light intensity, and the imaging quality qualification of a fill light area is less than 0, then reduce the intensity as the light source adjustment type.

5. A surface powder coating quality inspection system for switchgear cabinets according to claim 3, characterized in that: The light source control indicators for the confirmed reduced area include: Compare the weakening ratio of the reference light source corresponding to the influence tendency degree interval of each set light source to obtain the matched weakening ratio of the reference light source , and count the adjusted light source intensity corresponding to the reduced area , ; Each increased attenuation area is confirmed in the same way as the confirmation method for each increased closed area, and the adjusted light source intensity of the supplementary light for each increased attenuation area is confirmed in the same way as the confirmation method for adjusting the light source intensity corresponding to the reduced area; The adjusted light source intensity corresponding to the reduced area and the adjusted light source intensity of the supplementary light for each increased attenuation area are used as the light source control indicators for the reduced area.

6. A method for detecting the quality of powder coating on the surface of a switchgear cabinet, which is executed by the detection system according to any one of claims 1-5, characterized in that: This detection method includes: Step 1, Image acquisition environment detection: Collect the external light source information within the detection area corresponding to the target switchgear cabinet; Step 2, Primary surface image acquisition: Perform a primary powder coating image acquisition on the surface of the target switchgear cabinet to obtain the first acquired powder coating image; Step 3, Light source control judgment: Judge the light source control requirement. When the judgment result is non-requirement, execute Step 6. When the judgment result is requirement, execute Step 4; Step 4, Light source control confirmation execution: Confirm the light source control indicators and perform light source control; Step 5, Secondary surface image acquisition: After the light source control is completed, perform a powder coating image acquisition on the surface of the target switchgear cabinet again; Step 6, Powder coating status judgment: Analyze the powder coating qualification index on the surface of the target switchgear cabinet and make a powder coating status judgment based on this. When the judgment result is qualified, execute Step 8. Otherwise, execute Step 7; Step 7, Confirmation of unqualified cause items: Confirm the unqualified cause items of the powder coating; Step 8, Quality inspection feedback: Feedback the powder coating qualification index and the unqualified cause items of the powder coating to the relevant powder coating management personnel on the surface of the target switchgear cabinet.

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