Camouflage spraying detection equipment

Abstract

The invention relates to the technical field of detection equipment, in particular to camouflage spraying detection equipment. According to the technical scheme, the device comprises a rotary supporting table which is installed on the ground plane and used for supporting spraying equipment to be detected and rotating the spraying equipment at a quantitative angle; the vertical detection assembly is installed on the side face of the rotary supporting table and scans and shoots the side face of the to-be-detected spraying equipment through vertical sliding, and a circumferential image of the side face of the to-be-detected spraying equipment is obtained. And the transverse detection assembly is mounted above the rotary supporting table and is used for scanning and shooting the top surface of the to-be-detected spraying equipment through transverse sliding so as to obtain an image of the top surface of the to-be-detected spraying equipment. And the control center is connected with the rotary supporting table, the vertical detection assembly and the transverse detection assembly. And through display in the inspection three-dimensional model, which coordinate positions are unqualified in spraying can be visually observed, timely treatment and repair are facilitated, meanwhile, countermeasures can be adjusted in time according to the spraying positions, and later construction improvement is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a camouflage spray detection equipment. Background Art

[0002] Camouflage paint is a special-purpose paint used to imitate or change the appearance of an object so that it looks similar to or completely blends into the surrounding environment, thereby achieving the purpose of concealment, deception or protection. Camouflage paints are usually composed of a variety of substances, such as pigments, resins, nanoparticles, powders and other additives. They can be sprayed on any object, including metal, plastic, wood, concrete and fiber fabrics. In some cases, camouflage paints can also adjust the color or texture by adding chemicals or changing the thickness of the coating. Camouflage paints are widely used in military, security, civilian and other fields. For example, in the military field, camouflage paints are often used to camouflage aircraft, ships, vehicles, etc., in order to hide or deceive the enemy. In the civilian field, camouflage paints are also used to camouflage the exterior walls of buildings to protect important facilities from natural disasters or malicious attacks.

[0003] In the existing camouflage pattern spraying, the spots that need to be sprayed are generally square or rectangular, either alone or in combination, and there are also some circular, elliptical or other shapes. The existing camouflage spot spraying requires cutting the empty shielding plate according to the shape of the spot, and then spraying a large area, pasting the empty shielding plate to the position of the spot according to the spraying position, and finally spraying the background color.

[0004] After the equipment is sprayed, it needs to be parked in a suitable lighting environment, and then the workers use flashlights to conduct inspections, which is highly subjective and time-consuming and labor-intensive. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a camouflage spray detection device for detecting and evaluating the surface coating of the camouflage equipment after spraying. The camouflage spray detection device may include:

[0006] The rotating support platform is installed on the ground plane and is used to support and quantitatively rotate the spraying equipment to be detected. The ground plane can be the ground of the studio, or the ground constructed by artificial advance according to the needs. The ground plane can be a cement floor with a certain rigidity and will not be deformed due to heavy pressure. The spraying equipment to be detected can be a car or other large equipment for military, civilian or security use. Of course, the detection of small equipment is not excluded. In this way, the weight of the spraying equipment to be detected may be large, and the ground plane needs to have a load-bearing capacity. The studio has a certain isolation ability, and the light of the external environment has little or no effect. A shadowless lighting environment with a specific light intensity is required inside the studio, which can form a uniform and suitable light intensity on the surface of the spraying equipment to be detected, and when performing image acquisition, the image will not be distorted due to reflection. Specifically, multiple lighting lamps can be evenly installed inside the studio, which will not be described in detail here. The upper surface of the rotating support platform is arranged horizontally, and can be flatly docked with the upper surface of the ground plane, so as to facilitate the passage of tire cars or transport carts.

[0007] The vertical detection component is installed on the side of the rotating support platform, and it scans and photographs the side of the spraying equipment to be detected by vertical sliding, so as to obtain a circumferential image of the side of the spraying equipment to be detected. The vertical detection component can be vertically arranged on the side wall of the studio, and the side wall is the wall of the studio.

[0008] The lateral detection component is installed above the rotating support platform, specifically on the ceiling, and scans and photographs the top surface of the spraying equipment to be inspected by sliding horizontally, thereby obtaining an image of the top surface of the spraying equipment to be inspected.

[0009] The control center is connected to the rotating support table, the vertical detection component and the horizontal detection component. The model of the spraying equipment to be detected is obtained, and the corresponding equipment spraying model is obtained through the model. A three-dimensional space coordinate system is constructed, and the equipment spraying model is implanted into the three-dimensional space coordinate system according to the placement position to obtain a three-dimensional inspection model. The control center controls the vertical detection component and the horizontal detection component to slide and the rotating support table to move at a preset speed; the spraying equipment to be detected on the rotating support table is photographed. The surrounding images and top surface images of the spraying equipment to be detected are obtained, and the surrounding images and top surface images of the spraying equipment to be detected are fitted to obtain the photographed three-dimensional model. Then, according to a preset sampling density ρ, the preselected area on the surface of the photographed three-dimensional model is sampled to obtain sampling points and their coordinates, and the deviation value D of each sampling point is calculated. j , where j is the number of the sampling point. Then determine the deviation value D j Is it greater than a preset standard deviation value D 标If yes, mark the coordinate, if no, do not mark it. Calculate the overall spraying evaluation value Oe, and then determine whether the overall spraying evaluation value Oe is greater than a preset standard overall spraying evaluation value Oe 标 If yes, the detection spraying equipment is judged to be unqualified, if no, the detection spraying equipment is judged to be qualified.

[0010] Preferably, the rotating support platform may include a rotating base surface and a rotating drive structure, wherein the rotating base surface may be a disc structure and is rotatably mounted on a ground plane. The upper surface of the rotating base surface is flatly connected to the upper surface of the ground plane, and the rotating drive structure is mounted on the ground plane and is transmission-connected to the rotating base surface. Under the action of the rotating drive structure, the rotating base surface rotates within the ground plane, thereby enabling the spraying equipment to be inspected placed thereon to rotate at a fixed angle.

[0011] Preferably, the rotation drive structure may include: a drive motor, a worm gear and a worm, the drive motor is fixedly mounted on the ground plane, the worm is coaxially fixedly connected to the output shaft of the drive motor, the worm gear is fixedly connected to the outer edge of the rotating base surface, and the worm and the worm gear are meshed. Driven by the drive motor, the worm rotates the rotating base surface through the worm gear, thereby completing the fixed angle rotation of the spraying equipment to be detected. Of course, the rotation drive structure can also be a gear drive structure, which will not be described in detail here.

[0012] Preferably: a zero sensor can be provided between the rotating base surface and the ground plane, and the rotation angle of the rotating base surface can be calibrated to zero degree through the zero sensor. The zero sensor can be a photosensor, and the photosensor can include a light source generator and a light source receiver, which are respectively provided at relative positions of the ground plane and the rotating base surface. When the rotation angle of the rotating base surface is zero, the light source emitted by the light source generator is received by the light source receiver, thereby calibrating the rotation angle of the rotating base surface. We can calibrate this angle to zero, and then calibrate the rotation angle of the rotating base surface with the output of the rotating drive structure. By providing the light source generator and the light source receiver, the positioning is accurate and sensitive.

[0013] Preferred: Rotation angle of the abutment surface Wherein φ0 is the output of the rotation drive structure when the rotating base surface rotates one circle; φ is the current output of the rotation drive structure.

[0014] Preferably: a plurality of support rollers are rotatably arranged on the ground plane, and the support rollers are evenly radially distributed below the rotating base surface. The support rollers can support the rotating base surface, reduce the rotational friction of the rotating base surface, and make the rotating base surface rotate more smoothly.

[0015] Preferably, a calibration line may be provided between the rotating support platform and the ground plane, and the rotating angle of the rotating support platform may be visually corrected by calibration through the calibration line.

[0016] Preferably, the calibration line may include a main scale and a vernier scale, the main scale and the vernier scale having a sheet structure with arc surfaces that match each other, and the accuracy of the correction may be improved by arranging the main scale and the vernier scale.

[0017] Preferably: the vertical detection component may include a vertical drive structure, a sliding base, a telescopic support rod, a line scan camera and a telescopic drive member. The vertical drive structure is vertically arranged to form a vertical lifting track, and the vertical drive structure is slidably connected to the sliding base, and the vertical drive structure drives the sliding base to lift and slide. One end of the telescopic support rod is fixedly connected to the sliding base, and the other end of the telescopic support rod is fixedly connected to the line scan camera. The telescopic drive member is installed on the sliding base, and its output end is connected to the telescopic support rod, which is used to drive the telescopic support rod to extend and retract laterally, thereby controlling the lateral distance between the line scan camera and the spraying equipment to be detected on the rotating support platform.

[0018] Preferably: the telescopic support rod may include a plurality of support rod units and mutually sleeved guide rails, the support rod units are axially slidably sleeved inwardly and outwardly, the support rod units include a middle rod and an end rod, the end rod includes an inner rod and an outer rod, the inner rod is at the innermost side of all support rod units, the middle rods are slidably sleeved in turn, the end rods are sleeved on the outermost middle rods, the sides of the outer rods and the middle rods are provided with mounting grooves, the mounting grooves are in the same straight line, the mutually sleeved guide rails are fixedly installed in the mounting grooves, and each mutually sleeved guide rails are slidably sleeved in turn, the mutually sleeved guide rails may include a single-sided guide rail and a double-sided guide rail, the single-sided guide rail is fixedly installed on the inner rod and the outer rod, the double-sided guide rail is installed on the middle rod, the single-sided guide rail and the double-sided guide rail are slidably sleeved in turn.

[0019] Preferably: the method for obtaining the inspection three-dimensional model may include: scanning the spraying equipment to be inspected on the rotating support table by a scanning instrument, and then obtaining the equipment feature coordinate points (xi, yi, zi) and the basic equipment feature coordinate points (x0, y0, z0) on the spraying equipment to be inspected, where i is the number of the equipment feature, I is the total number of equipment features, i=1, 2, ..., I. Obtaining the basic feature vector and the model feature vector The equipment spraying model is implanted into the three-dimensional space coordinate system and based on the basic feature vector and the model feature vector The starting point and direction are placed in coincidence, and then the equipment spraying model is scaled based on the basic equipment characteristic coordinate point (x0, y0, z0), so that the inspection three-dimensional model can be obtained.

[0020] Preferably: check the coordinates (x, y, z) in the three-dimensional model. x = Lx (x'-x0') + x0, y = Ly (y'-y0') + y0, z = Lz (z'-z0') + z0, (x', y', z') are the coordinate points in the equipment spraying model before correction. (x0', y0', z0') are the coordinate points in the equipment spraying model corresponding to the basic equipment features before correction.

[0021] Preferred: Among them, (xi', yi', zi') is the coordinate point in the equipment spraying model corresponding to the equipment feature numbered i before correction, and (x0', y0', z0') is the coordinate point in the equipment spraying model corresponding to the basic equipment feature before correction.

[0022] Preferred: sampling density ρ = κ 2 ρ 标 , where ρ 标 It can be the standard sampling density, and κ is the spot density.

[0023] Preferably: deviation value Dj = η(gj-gj'), where j is the number of the sampling point, g j is the gray value of the sampling point numbered j in the three-dimensional model, g j ' is to check the gray value of the coordinate point corresponding to the sampling point numbered j in the three-dimensional model, and η is the distortion coefficient.

[0024] Preferred: Overall spraying evaluation value Where n is the number of the marked sampling point, β j is the exposure coefficient of the region numbered j. j is the chrominance weight coefficient numbered j.

[0025] Preferably: the camouflage spray detection equipment also includes an image acquisition module, which can be a camera, etc., which can be installed on the ceiling and can take pictures of the spray equipment to be detected to obtain equipment pictures.

[0026] Preferably: the method for obtaining the model of the spraying equipment to be detected may include: the control center analyzes the equipment image to obtain the equipment features, the equipment features may be the length, width, height, equipment logo or equipment shape of the spraying equipment to be detected, etc., which will not be described in detail here. Then the equipment model is obtained through the equipment features. Specifically, we can make a equipment model-feature information table in advance through the equipment features of various equipment, and search the equipment model-feature information table through the equipment features, so as to obtain the corresponding equipment model.

[0027] The technical effects and advantages of the present invention are as follows: by displaying in the inspection three-dimensional model, it is possible to visually observe which coordinate positions are unqualified for spraying, so as to facilitate timely processing and repair, and at the same time timely adjustment measures can be made for the spraying equipment or process at the spraying position, so as to facilitate later construction improvements. By using this method for detection, the subjectivity of manual detection is avoided, while the occurrence of human errors and errors caused by inconsistent light intensity are reduced, and the detection data can be digitized to form a unified standard. This method can not only detect the color difference of the spraying, but also check whether there is color bleeding, whether the spraying position is correct, etc., achieving the result of evaluating multiple data in one test, with strong evaluation capabilities, no need for manual detection of each position, and can also check details that cannot be manually checked, and the detection is more subtle and comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of a camouflage spray detection device proposed by the present invention.

[0029] Figure 2 This is a schematic diagram of the main structure of a camouflage spray detection device proposed by the present invention.

[0030] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure of part a.

[0031] Figure 4 This is a schematic structural diagram of a telescopic support rod in a camouflage spray detection device proposed by the present invention.

[0032] Explanation of the reference numerals: ground plane 1, rotating support platform 2, vertical detection assembly 3, telescopic drive member 4, line scan camera 5, telescopic support rod 6, sliding base 7, side wall 8, ceiling 9, lateral detection assembly 10, worm gear 11, support roller 12, worm 13, drive motor 14, support rod unit 15, interlocking guide rails 16, intermediate rod 17, end rod 18, double-sided guide rails 19, mounting groove 20. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0034] Example 1

[0035] refer to Figure 1-Figure 2In this embodiment, a camouflage spray detection device is proposed for detecting and evaluating the surface coating of the camouflage device after spraying. The camouflage spray detection device may include:

[0036] The rotating support platform 2 is installed on the ground plane 1, and is used to support and quantitatively rotate the spraying equipment to be detected. The ground plane 1 can be the ground of the studio, or the ground constructed by artificial advance according to the needs. The ground plane 1 can be a cement floor, which has a certain rigidity and will not be deformed due to heavy pressure. The spraying equipment to be detected can be a car or other large equipment for military, civilian or security use. Of course, the detection of small equipment is not excluded. In this way, the weight of the spraying equipment to be detected may be large, and the ground plane 1 needs to have a load-bearing capacity. The studio has a certain isolation ability, and the light of the external environment has little or no effect. A shadowless lighting environment with a specific light intensity is required inside the studio, which can form a uniform and suitable light intensity on the surface of the spraying equipment to be detected, and when performing image acquisition, the image will not be distorted due to reflection. Specifically, multiple lighting lamps can be evenly installed inside the studio, and the specific details are not repeated here. The upper surface of the rotating support platform 2 is arranged horizontally, and can be flatly docked with the upper surface of the ground plane 1, so as to facilitate the passage of tire cars or transport carts.

[0037] The rotating support platform 2 may include a rotating base surface and a rotating drive structure. The rotating base surface may be a disc structure and is rotatably mounted on the ground plane 1. Specifically, a circular installation pit may be provided on the ground of the ground plane 1. The rotating base surface is rotatably mounted inside the installation pit, and its upper surface is flatly connected to the upper surface of the ground plane 1. The rotating drive structure is installed on the ground plane 1 and is connected to the rotating base surface by transmission. Under the action of the rotating drive structure, the rotating base surface rotates within the ground plane 1, so that the spray equipment to be tested placed thereon can be rotated at a fixed angle. Reference Figure 3, the rotation drive structure may include: a drive motor 14, a worm wheel pattern 11 and a worm 13, the drive motor 14 is fixedly mounted on the ground plane 1, the worm 13 is coaxially fixedly connected to the output shaft of the drive motor 14, the worm wheel pattern 11 is fixedly connected to the outer edge of the rotating base surface, and the worm 13 and the worm wheel pattern 11 are meshed. Driven by the drive motor 14, the worm 13 rotates the rotating base surface through the worm wheel pattern 11, thereby completing the fixed-angle rotation of the spray equipment to be detected. Of course, the rotation drive structure can also be a gear drive structure, which will not be described in detail here. A zero sensor can be provided between the rotating base surface and the ground plane 1, and the rotation angle of the rotating base surface can be calibrated to zero degrees through the zero sensor. The zero sensor can be a photosensor, which can include a light source generator and a light source receiver. The light source generator and the light source receiver are respectively arranged at relative positions of the ground plane 1 and the rotating base surface. When the rotation angle of the rotating base surface is zero, the light source emitted by the light source generator is received by the light source receiver, thereby calibrating the rotation angle of the rotating base surface. We can calibrate this angle to zero, and then calibrate the rotation angle of the rotating base surface with the output of the rotating drive structure. By setting the light source generator and the light source receiver, the positioning is accurate and sensitive. Specifically, the rotation angle of the rotating base surface can be Wherein φ0 is the output of the rotating drive structure when the rotating base surface rotates one circle. We can obtain it by conducting experiments on the rotating support platform 2 in advance, and the details are not repeated here. φ is the current output of the rotating drive structure. A counter of the output needs to be installed in the rotating drive structure so that the output of the rotating drive structure can be quantitatively recorded. The details are not repeated here. Through the coordinated driving of the worm wheel pattern 11 and the worm 13, the output error of the drive motor 14 can be reduced in the same proportion, thereby improving the accuracy of the angle control of the rotating support platform 2. At the same time, it can also avoid the angle error caused by the active rotation of the rotating support platform 2, and increase the stability of the placement of the spraying equipment to be detected. A plurality of support rollers 12 are rotatably arranged on the ground plane 1, and the support rollers 12 are evenly radially distributed below the rotating base surface. The support rollers 12 can support the rotating base surface, reduce the rotation friction of the rotating base surface, and make the rotating base surface rotate more smoothly. Through the coordination of the worm wheel pattern 11 and the worm 13, the active rotation of the rotating base surface can be avoided at the same time, and the stability of the rotating support platform 2 is increased. Of course, a calibration line can also be set between the rotating support platform 2 and the ground plane 1. By calibrating the calibration line, the rotation angle of the rotating support platform 2 can be visually corrected. The calibration line includes an inner line and an outer line. The outer line is set at the edge of the ground plane 1, and the inner line is set at the edge of the rotating base surface. When zero-degree calibration is performed, the inner line and the outer line are aligned, so that visual correction can be performed. The calibration line can include a main scale and a vernier scale. The main scale and the vernier scale have a sheet structure with a mutually matching arc surface. By setting the main scale and the vernier scale, the accuracy of the correction can be improved.

[0038] The vertical detection component 3 is installed on the side of the rotating support platform 2, and it scans and shoots the side of the spraying equipment to be detected by vertical sliding, so that the circumferential image of the side of the spraying equipment to be detected can be obtained. The vertical detection component 3 can be vertically arranged on the side wall 8 of the studio, and the side wall 8 is the wall of the studio. The vertical detection component 3 may include a vertical drive structure, a sliding base 7, a telescopic support rod 6, a line scan camera 5 and a telescopic drive member 4. The vertical drive structure is vertically arranged to form a vertical lifting track, and the vertical drive structure is slidably connected to the sliding base 7, and the vertical drive structure drives the sliding base 7 to lift and slide. And drive the line scan camera 5 to slide vertically for shooting. The vertical drive structure may include a vertical track, a screw rod and a servo motor, the vertical track is vertically fixedly installed on the side wall 8, and the sliding base 7 is slidably placed on the vertical track, so that the sliding base 7 can slide freely on the track, the screw rod is rotatably arranged on the vertical track, and its axial direction is consistent with the vertical track guide direction, and the sliding base 7 is sleeved on the screw rod. Driven by the servo motor, the sliding base 7 can be driven to rise and fall, thereby completing the lifting drive. The vertical drive structure can also be a synchronous belt and a guide rail. The synchronous belt drive control is convenient and the lifting and lowering are smooth, which avoids the shaking of the line scan camera 5 during shooting and increases the clarity of the captured pictures. One end of the telescopic support rod 6 is fixedly connected to the sliding base 7, and the other end of the telescopic support rod 6 is fixedly connected to the line scan camera 5. The telescopic support rod 6 can be set horizontally. The telescopic drive member 4 is installed on the sliding base 7, and its output end is connected to the telescopic support rod 6, which is used to drive the telescopic support rod 6 to extend and retract horizontally, thereby controlling the lateral distance between the line scan camera 5 and the spraying equipment to be inspected on the rotating support platform 2. Reference Figure 4The telescopic support rod 6 may include a plurality of support rod units 15 slidably sleeved against each other and guide rails 16 sleeved against each other. The support rod unit 15 is axially slidably sleeved inwardly and outwardly. Generally, the number of support rod units 15 may be 3. The support rod unit 15 includes an intermediate rod 17 and an end rod 18. The end rod 18 includes an inner rod and an outer rod. The inner rod is located at the innermost side of all support rod units 15. The intermediate rod 17 is slidably sleeved in turn, and the end rod 18 is sleeved on the outermost intermediate rod 17, thereby increasing the shooting distance of the line scan camera 5. The sides of the outer rod and the middle rod 17 are provided with mounting grooves 20, and the mounting grooves 20 are in the same straight line. The inter-hung guide rails 16 are fixedly installed in the mounting grooves 20, and each inter-hung guide rail 16 is slidably installed in sequence. The inter-hung guide rails 16 can include a single-sided guide rail and a double-sided guide rail 19. The single-sided guide rail is fixedly installed on the inner rod and the outer rod, and the double-sided guide rail 19 is installed on the middle rod 17. The single-sided guide rail and the double-sided guide rail 19 are slidably installed in sequence, thereby increasing the stability and linearity of the telescopic support rod 6, avoiding the height change of the line scan camera 5 caused by its gravity deflection and the increase in length, and making the position of the line scan camera 5 shooting clearer. The single-sided guide rail can be a single-sided guide rail structure, and the double-sided guide rail 19 can be a double-sided guide rail structure. The specific structure is not repeated here. When installing the telescopic support rod 6, the inner rod of the support rod unit 15 is fixedly installed on the sliding base 7, the outer rod is fixedly connected to the line scan camera 5, and the output end of the telescopic drive 4 is rotatably connected to the outer rod. The telescopic drive 4 can be an electric telescopic rod, a hydraulic rod, a pneumatic rod, etc. Two telescopic drives 4 are provided and are located on both sides of the telescopic support rod 6. Two telescopic drives 4 are provided, and the extrusion forces can offset each other, thereby avoiding the deflection force causing the telescopic support rod 6 to bend and causing detection errors.

[0039] The horizontal detection component 10 is installed above the rotating support platform 2, specifically on the ceiling 9, and scans and photographs the top surface of the spraying equipment to be inspected by sliding horizontally, so as to obtain a circumferential image of the top surface of the spraying equipment to be inspected. The structure of the horizontal detection component 10 can be similar to that of the vertical detection component 3, and will not be described in detail here.

[0040] The control center is connected with the rotating support platform 2, the vertical detection component 3 and the horizontal detection component 10. The control center can be a remote control center. Specifically, the rotating support platform 2, the vertical detection component 3 and the horizontal detection component 10 can be installed in one room, and the control center can be installed in the next room. The isolation wall between the two rooms can be glass that does not affect the light, so as to facilitate the operator to visually observe the condition of the spraying equipment to be detected in time. When the spraying equipment to be detected is in place, the rotating support platform 2 is in a zero-angle position. The model of the spraying equipment to be detected is obtained by manually inputting the model of the spraying equipment to be detected, and then searching a pre-set model-equipment spraying model information table through the model of the spraying equipment to be detected, so as to obtain the equipment spraying model. The pre-set model-equipment spray model information table can be designed and constructed in advance according to the model of the equipment to obtain the equipment model, and then the spray pattern can be designed on the equipment model, so that the equipment spray model of each equipment model can be obtained. Therefore, the equipment spray model is a three-dimensional equipment model with a standard spray pattern, which contains the size and appearance information of the equipment, and also contains the spray pattern shape, position, size, color, etc., which will not be described in detail here. Then the equipment model and the corresponding equipment spray model are constructed into a model-equipment spray model information table. By inputting the model, the equipment spray model can be extracted by querying this table. The specific content of the information table is not the subject of protection of this application and will not be described in detail here. Construct a three-dimensional space coordinate system, and implant the equipment spray model into the three-dimensional space coordinate system according to the placement position to obtain a three-dimensional inspection model. The method of implanting it into the three-dimensional space coordinate system according to the placement position can be done by manual calibration, and scanning equipment can also be installed in the studio, etc., which will not be described in detail here. For example, the spraying equipment to be detected on the rotating support table 2 can be scanned by a scanning instrument, and then the equipment feature coordinate points (xi, yi, zi) and the basic equipment feature coordinate points (x0, y0, z0) on the spraying equipment to be detected can be obtained, where i is the number of the equipment feature, the equipment feature can be the corner position of the spraying equipment to be detected, and I is the total number of equipment features. i=1, 2, ..., I. In general, the equipment feature can take 8 coordinate points, that is, I=8. The basic equipment feature can be the most obvious point of the spraying equipment to be detected, which is least likely to change in shape or position, such as the corner position of the rear end of the front of a car, etc., of course, other positions are not excluded. The basic feature vector is obtained according to the equipment feature coordinate points (xi, yi, zi) and the basic equipment feature coordinate points (x0, y0, z0) and the model feature vector on the equipment spray model The basic feature vector It can be a vector generated based on the basic equipment feature coordinate point (x0, y0, z0) and pointing to any coordinate point in the equipment feature coordinate point (xi, yi, zi). For example, our basic equipment feature coordinate point p0 (x0, y0, z0) is the left turning point of the front of the car, and the equipment feature point coordinate p1 (x1, y1, z1) is the lower right turning point of the car. The basic feature vector for Of course, the setting of other coordinate points is not excluded. The model feature vector on the spraying model of the equipment It is the vector obtained by the coordinate points (xi', yi', zi') corresponding to the equipment features on the equipment spraying model and the coordinate points (x0', y0', z0') corresponding to the basic equipment features. For example, the vector formed by the left turning point of the front of the vehicle to the lower right turning point of the vehicle box on the equipment spraying model. The equipment spraying model is implanted into the three-dimensional space coordinate system and is used as the basic feature vector and the model feature vector The starting point and direction are placed overlapping, which ensures that the position and direction of the equipment spray model are correct, so that it can be scaled to increase the accuracy of the placement and facilitate subsequent scaling calculations. The equipment spray model is then scaled based on the basic equipment characteristic coordinate points (x0, y0, z0) to obtain a three-dimensional inspection model. The three-dimensional inspection model can be obtained by proportionally enlarging the equipment spray model based on the basic equipment characteristic coordinate points (x0, y0, z0). This method of obtaining is simple, and it only requires proportional enlargement. This ratio can be the point ratio value of the equipment feature on the spray equipment to be inspected and the corresponding equipment spray model. For example, the scaling ratio of the horizontal axis can be The scaling factor of the vertical axis can be The scaling factor of the vertical coordinate can be Where (xi', yi', zi') are the coordinate points in the equipment spraying model corresponding to the equipment feature numbered i before correction, and (x0', y0', z0') are the coordinate points in the equipment spraying model corresponding to the basic equipment feature before correction. Check the coordinates (x, y, z) in the three-dimensional model. x = Lx (x'-x0') + x0, y = Ly (y'-y0') + y0, z = Lz (z'-z0') + z0, (x', y', z') are the coordinate points in the equipment spraying model before correction. This method is used to scale the model based on the basic equipment features. The basic equipment features usually select obvious and non-deformable positions, so that the model will not be unable to overlap with the actual equipment due to equipment deformation caused by ground reasons, gravity reasons, etc. This method can eliminate the mismatch between the model and reality caused by this reason, eliminate the interference factors, and calculate through multiple feature positions, which can greatly reduce the error and provide an accurate numerical basis for later detection. The control center controls the vertical detection component 3 and the lateral detection component 10 to slide and the rotating support platform 2 to move at a preset speed. The preset speed can be obtained based on experience and will not be described in detail here. The spraying equipment to be detected on the rotating support platform 2 is photographed. The initial rotation angle of the rotating support platform 2 can be the initial zero angle, and the shooting angles of the vertical detection component 3 and the lateral detection component 10 can start from the initial zero angle. The vertical detection component 3 and the lateral detection component 10 can start from the lowest point and the center corresponding to the rotating support platform 2 respectively. The telescopic drive member 4 controls the telescopic support rod 6 to extend and retract, thereby controlling the line scan camera 5 and the shooting area of ​​the spraying equipment to be detected to always maintain the best shooting distance. The specific driving method is not described in detail here. The side circumferential image and the top surface image of the spraying equipment to be detected can be obtained, and the side circumferential image and the top surface image of the spraying equipment to be detected are fitted to obtain a shooting three-dimensional model. The specific fitting method is a prior art and will not be described in detail here. Then, the preselected area of ​​the surface of the shooting three-dimensional model is sampled according to a preset sampling density ρ. The preselected area can be a spraying construction area, which will not be described in detail here. The sampling points and their coordinates are obtained by photographing the surface of the three-dimensional model. The preset sampling density ρ can be obtained based on experience. For example, 1-10 points are sampled per square centimeter. Of course, other sampling methods are not excluded, and the specific details are not repeated here. The preset sampling density can also be calculated by the density of the camouflage spots. The sampling density ρ = κ 2 ρ 标 , where ρ 标It can be a standard sampling density, which can generally be the sampling density of a non-changing area. For example, 4 samples are taken for 1 square centimeter, and κ is the spot density, whose specific value can be the number of spots within a preset unit area centered on the current sampling point. By setting the sampling density in this way, it can be set according to the actual situation of the spots, thereby improving the judgment ability, avoiding redundant calculations and insufficient sampling points, and better reflecting the authenticity and reliability of data evaluation. Get the gray value g of the sampling point j , where j is the number of the sampling point, then calculate the color deviation value Dj = η (gj-gj'), where g j ' is to check the gray value of the coordinate point corresponding to the sampling point numbered j in the three-dimensional model. η is the distortion coefficient. Generally, it depends on the color changes during the lighting and image processing. The theoretical value is 1, and the actual value is 0.95-1.05. Of course, other situations are not excluded. Then determine the deviation value D j Is it greater than a preset standard deviation value D 标 If yes, the coordinate is marked, if no, it is not marked. Standard deviation value D 标 It can be set according to actual needs or customer needs, and the details will not be elaborated here. By marking the coordinate points that do not meet the spraying quality requirements, they can be displayed in the inspection three-dimensional model, so that you can intuitively observe which coordinate positions are unqualified for spraying, so as to facilitate timely processing and repair, and at the same time, timely adjustment measures can be made for the spraying equipment or process at the spraying position, which is convenient for later construction improvements. The detection by this method avoids the subjectivity of manual detection, and at the same time reduces the occurrence of human errors and errors caused by inconsistent light intensity, and can digitize the detection data to form a unified standard. This method can not only detect the color difference of the spraying, but also check whether there is color bleeding, whether the spraying position is correct, etc., which plays the role of evaluating multiple data in one test. It has strong evaluation capabilities and does not require manual detection of each position. It can also check details that cannot be manually checked, and the detection is more subtle and comprehensive. The overall spraying evaluation value Oe and the overall spraying evaluation value are calculated. Where n is the number of the marked sampling point, β j It is the exposure coefficient of the area numbered j. It can be divided according to the importance of each area of ​​the spray equipment to be tested, and then set according to the exposure frequency of the area. Its value is generally 0.5-5 and can be set manually. The specific details are not repeated here. j It is the chromaticity weight coefficient numbered j, which can be determined according to the importance of the color. The value is generally 0.8-2. The specific details are not repeated here. Then judge whether the overall spraying evaluation value Oe is greater than a preset standard overall spraying evaluation value Oe 标If yes, the spraying equipment is judged to be unqualified, if no, the spraying equipment is judged to be qualified. Standard overall spraying evaluation value Oe 标 It can be set according to customer needs or engineering quality standards, which is not the subject of this application and will not be described in detail here. Failure can be manually re-evaluated, repaired or re-sprayed. This method can be used to evaluate the spraying equipment to be tested as a whole. In the actual working process, the deviation of individual points does not mean that there is a problem with the spraying quality of the spraying equipment to be tested or that it needs to be modified and re-sprayed. It is necessary to evaluate the spraying equipment to be tested as a whole in order to truly evaluate the spraying quality of the spraying equipment to be tested. By exponentially modifying the deviation ratio, the weight of individual deviations can be highlighted, avoiding the situation where multiple average numbers hide large deviation values ​​of individual numbers. In camouflage spray detection, the impact of large deviations in small areas is much greater than that of small deviations in large areas. Calculated by this method, it is very consistent with the actual judgment needs, so the judgment is more accurate.

[0041] Example 2

[0042] The camouflage spray detection equipment also includes an image acquisition module, which can be a camera, etc., which can be installed on the ceiling 9, and can take pictures of the spray equipment to be detected to obtain equipment pictures. The method for obtaining the model of the spray equipment to be detected may include: the control center analyzes the equipment picture to obtain equipment characteristics, and the equipment characteristics can be the length, width, height, equipment logo or equipment shape of the spray equipment to be detected, etc., which will not be described in detail here. Then, the equipment model is obtained through the equipment characteristics. Specifically, we can make a equipment model-feature information table in advance through the equipment characteristics of various devices, and search the equipment model-feature information table through the equipment characteristics, so as to obtain the corresponding equipment model.

[0043] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0044] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A camouflage spray detection device, characterized in that: include: A rotating support table is installed on the ground plane and is used to support and quantitatively rotate the spray equipment to be inspected; A vertical detection component is installed on the side of the rotating support platform, and scans and photographs the side of the spraying equipment to be detected by vertical sliding to obtain a circular image of the side of the spraying equipment to be detected; A lateral detection component is installed above the rotating support platform, and scans and photographs the top surface of the spraying equipment to be inspected by lateral sliding to obtain an image of the top surface of the spraying equipment to be inspected; The control center is connected with the rotating support platform, the vertical detection component and the horizontal detection component; the model of the spraying equipment to be detected is obtained, and the corresponding equipment spraying model is obtained through the model; a three-dimensional space coordinate system is constructed, and the equipment spraying model is implanted into the three-dimensional space coordinate system according to the placement position to obtain the inspection three-dimensional model, and the control center controls the vertical detection component and the horizontal detection component to slide and the rotating support platform to move at a preset speed; the spraying equipment to be detected on the rotating support platform is photographed; the surrounding images and the top surface images of the spraying equipment to be detected are obtained, and the surrounding images and the top surface images of the spraying equipment to be detected are fitted to obtain the photographed three-dimensional model; then, a pre-selected area on the surface of the photographed three-dimensional model is sampled according to a preset sampling density ρ to obtain sampling points and their coordinates, and the deviation value D of each sampling point is calculated j , where j is the number of the sampling point; then determine the deviation value D j Is it greater than a preset standard deviation value D 标 If yes, mark the coordinate, if no, do not mark it; calculate and obtain the overall spraying evaluation value Oe, and then determine whether the overall spraying evaluation value Oe is greater than a preset standard overall spraying evaluation value Oe 标 If yes, the detection spraying equipment is judged to be unqualified, if no, the detection spraying equipment is judged to be qualified.

2. According to claim 1, a camouflage spray detection device is characterized in that: The rotating support platform comprises a rotating base surface and a rotating driving structure. The rotating base surface is a disc structure and is rotatably mounted on the ground plane. The rotating driving structure is mounted on the ground plane and is drivingly connected to the rotating base surface.

3. According to claim 2, a camouflage spray detection device is characterized in that: The rotary drive structure comprises: a drive motor, a worm gear and a worm, the drive motor is fixedly mounted on the ground plane, the worm is coaxially fixedly connected to the output shaft of the drive motor, the worm gear is fixedly connected to the outer edge of the rotating base surface, and the worm and the worm gear are meshed.

4. The camouflage spray detection device according to claim 2 is characterized in that: A zeroing sensor is arranged between the rotating base surface and the ground plane, and the zeroing sensor is used to calibrate the rotation angle of the rotating base surface to zero degree.

5. The camouflage spray detection device according to claim 2 is characterized in that: A plurality of support rollers are rotatably arranged on the ground plane, and the support rollers are evenly radially distributed below the rotating base surface.

6. The camouflage spray detection device according to claim 1, characterized in that: A calibration line is arranged between the rotating support platform and the ground plane, and the rotation angle of the rotating support platform is corrected by calibration through the calibration line.

7. The camouflage spray detection device according to claim 6, characterized in that: The calibration line includes a main scale and a vernier scale.

8. The camouflage spray detection device according to claim 1, characterized in that: The vertical detection assembly includes a vertical drive structure, a sliding base, a telescopic support rod, a line scan camera and a telescopic drive member; the vertical drive structure is vertically arranged; the vertical drive structure is slidably connected to the sliding base, and the vertical drive structure drives the sliding base to rise and fall and slide; one end of the telescopic support rod is fixedly connected to the sliding base, and the other end of the telescopic support rod is fixedly connected to the line scan camera; The telescopic driving member is installed on the sliding base, and the output end of the telescopic driving member is connected to the telescopic supporting rod, so as to drive the telescopic supporting rod to extend and retract transversely.

9. The camouflage spray detection device according to claim 8, characterized in that: The telescopic support rod includes a plurality of support rod units and mutually sleeved guide rails that are slidably sleeved against each other; the support rod unit includes an intermediate rod and an end rod, the end rod includes an inner rod and an outer rod, the inner rod is located at the innermost side of all support rod units, the intermediate rods are slidably sleeved in turn, and the end rods are sleeved on the outermost intermediate rods, the sides of the outer rods and the intermediate rods are provided with mounting grooves, the mounting grooves are in the same straight line, the mutually sleeved guide rails are fixedly installed in the mounting grooves, and each mutually sleeved guide rail is slidably sleeved in turn; the mutually sleeved guide rails include a single-sided guide rail and a double-sided guide rail, the single-sided guide rail is fixedly installed on the inner rod and the outer rod, the double-sided guide rail is installed on the intermediate rod, and the single-sided guide rail and the double-sided guide rail are slidably sleeved in turn.

10. The camouflage spray detection device according to claim 1, characterized in that: The camouflage spray detection device also includes an image acquisition module, which is used to take pictures of the spray equipment to be detected to obtain equipment pictures.

Images