CN-119000690-B - Coating appearance defect marking method, device, equipment and storage medium

CN119000690BCN 119000690 BCN119000690 BCN 119000690BCN-119000690-B

Abstract

A marking method, device and equipment for coating appearance defects and a computer readable storage medium comprise the steps of obtaining defect information of each defect in a vehicle to be detected, wherein the defect information comprises defect types, defect sizes and defect coordinates, marking the defects at the defect coordinates according to the defect types and the defect sizes based on a preset laser lamp lattice, wherein the defect marks are lamp-off patterns, the problem that an operator in a polishing process needs to perform secondary inspection in a coding area to read out the accurate position of a problem in the related technology is solved, the operator in the polishing process needs to be skilled in numbering the program position, otherwise the operator in the polishing process is easy to miss and misread, and the defect is directly polished through the defect marks, so that the risk of miss and misread is avoided.

Inventors

WANG YONGWEI
ZHANG LIGUI
DING YIHUA
SU JUN
Zhou Qianni

Assignees

东风汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20240815

Claims (8)

1. The marking method of the coating appearance defect is characterized by comprising the following steps of: obtaining defect information of each defect in a vehicle to be detected, wherein the defect information comprises defect types, defect sizes and defect coordinates; performing defect marking on each defect at the defect coordinates based on a preset laser lamp lattice according to the defect type and the defect size, wherein the defect marking is a lamp off pattern; The defect marking of each defect at the defect coordinate based on the preset laser lamp lattice according to the defect type and the defect size comprises the following steps: determining the light pattern of each defect to be marked according to the defect type and the defect size; Determining the light emission included angle of a corresponding red and green bidirectional laser lamp cap in a preset laser lamp lattice according to the diameter of a preset polishing head; Controlling the red-green bidirectional laser lamp cap to project the lamplight pattern on each defect according to the light emission included angle at the defect coordinate based on the preset laser lamp lattice according to the defect coordinate so as to mark the defect; Obtaining the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, the lamp cap outlet radius of the red and green bidirectional laser lamp cap and the diameter of a preset polishing head; according to a preset included angle formula of the emitted light Calculating the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, the lamp cap outlet radius of the red-green bidirectional laser lamp cap and the diameter of a preset polishing head, and determining the light emission included angle of the corresponding red-green bidirectional laser lamp cap in the preset laser lamp lattice meeting the preset light emission included angle formula, wherein L is the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, S is the lamp cap outlet radius of the red-green bidirectional laser lamp cap, and R is the diameter sum of the preset polishing head The included angle of the light emitted by the corresponding red and green bidirectional laser lamp caps in the laser lamp lattice is preset.
2. The method for marking appearance defects of painting according to claim 1, wherein said determining a light pattern required for marking each of said defects according to said defect type and defect size comprises: Determining the category to which each defect belongs based on a first preset classification table, the defect type and the defect size; And determining the lamplight pattern corresponding to each category to which the defect belongs based on the first preset classification table and the category to which the defect belongs.
3. The method of marking appearance defects in a paint according to claim 1, wherein before marking each of the defects at the defect coordinates, further comprising: Receiving a light control instruction and acquiring quantity information carried by the control instruction; And controlling the starting quantity of the red and green bidirectional laser lamp caps in the preset laser lamp lattice through the quantity information in the lamplight control instruction.
4. The method for marking paint appearance defects according to claim 1, wherein after obtaining defect information of each defect in the vehicle to be detected, further comprising: And if the defect coordinates of the defects are determined to be three-dimensional coordinates, deconstructing the three-dimensional coordinates of the defects, and converting the three-dimensional coordinates of the defects into two-dimensional coordinates.
5. The method for marking appearance defects of painting according to claim 1, wherein the preset laser lamp lattice comprises a four-way motor controller, a universal joint motor controller, a micro motor, a plurality of red and green two-way laser lamp caps, a lamp cap filter disc with a rotary lens, a filter, a universal joint and an electric controller ECU.
6. A coated appearance defect marking device, characterized in that the coated appearance defect marking device comprises: The system comprises an acquisition module, a detection module and a detection module, wherein the acquisition module is used for acquiring defect information of each defect in a vehicle to be detected, and the defect information comprises defect types, defect sizes and defect coordinates; the identification module is used for carrying out defect marking on each defect at the defect coordinate based on a preset laser lamp lattice according to the defect type and the defect size, wherein the defect marking is a lamp off pattern; The defect marking of each defect at the defect coordinate based on the preset laser lamp lattice according to the defect type and the defect size comprises the following steps: determining the light pattern of each defect to be marked according to the defect type and the defect size; Determining the light emission included angle of a corresponding red and green bidirectional laser lamp cap in a preset laser lamp lattice according to the diameter of a preset polishing head; Controlling the red-green bidirectional laser lamp cap to project the lamplight pattern on each defect according to the light emission included angle at the defect coordinate based on the preset laser lamp lattice according to the defect coordinate so as to mark the defect; Obtaining the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, the lamp cap outlet radius of the red and green bidirectional laser lamp cap and the diameter of a preset polishing head; according to a preset included angle formula of the emitted light Calculating the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, the lamp cap outlet radius of the red-green bidirectional laser lamp cap and the diameter of a preset polishing head, and determining the light emission included angle of the corresponding red-green bidirectional laser lamp cap in the preset laser lamp lattice meeting the preset light emission included angle formula, wherein L is the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, S is the lamp cap outlet radius of the red-green bidirectional laser lamp cap, and R is the diameter sum of the preset polishing head The included angle of the light emitted by the corresponding red and green bidirectional laser lamp caps in the laser lamp lattice is preset.
7. A paint appearance defect marking apparatus, characterized in that the paint appearance defect marking apparatus comprises a processor, a memory, and a paint appearance defect marking program stored on the memory and executable by the processor, wherein the paint appearance defect marking program, when executed by the processor, implements the steps of the paint appearance defect marking method according to any one of claims 1 to 5.
8. A computer-readable storage medium, wherein a marking program of paint appearance defects is stored on the computer-readable storage medium, wherein the marking program of paint appearance defects, when executed by a processor, implements the steps of the marking method of paint appearance defects according to any one of claims 1 to 5.

Description

Coating appearance defect marking method, device, equipment and storage medium Technical Field The present application relates to the field of defect identification, and in particular, to a method, apparatus, device, and computer readable storage medium for marking appearance defects of painting. Background When the coating engineering is used for spraying a coating film, the surface is often not completely smooth due to environmental impurities (such as dust, filth, oil drops and the like), and defects such as particles, shrinkage cavities and the like are generated, and the defects can be uniformly detected and polished in the coating finishing process. The conventional detection is to use a zebra light source to assist manual visual detection, wherein the main function of a finishing paint defect detection station is to detect and mark problem points and problem types, and the auxiliary post-process polishing operation is to mainly identify the defect types and mark defect positions, adopt a mode of dividing a vehicle body into a plurality of blocks and numbering, display the detection states of the blocks on an electronic screen of a post-process station, finish statistics of the types and the numbers of the blocks in the corresponding numbers at the automatic detection station, output the statistics to the electronic screen, read the numbers of the positions and the defect types on the screen by the post-process station, process the corresponding positions, display the defect states of the next vehicle body after the post-process operation is finished, lead operators in the polishing process to need secondary detection in a coding area to read the accurate positions of the problem, and need operators in the polishing process to be skilled in numbering the program positions, and are not easy to miss and misread. Disclosure of Invention The application provides a marking method, a device, equipment and a computer readable storage medium for coating appearance defects, which can solve the technical problems that operators in a polishing process can read out accurate positions of problems only by secondary inspection in a coding area, the operators in the polishing process need to number program positions to be skilled, and otherwise, the operators are easy to miss and misread in the prior art. In a first aspect, an embodiment of the present application provides a method for marking a coating appearance defect, where the method for marking a coating appearance defect includes: obtaining defect information of each defect in a vehicle to be detected, wherein the defect information comprises defect types, defect sizes and defect coordinates; And carrying out defect marking on each defect at the defect coordinates based on a preset laser lamp lattice according to the defect type and the defect size, wherein the defect marking is a lamp off pattern. With reference to the first aspect, in an implementation manner, the defect marking, based on a preset laser lamp lattice, on each defect at the defect coordinates according to the defect type and the defect size includes: determining the light pattern of each defect to be marked according to the defect type and the defect size; Determining the light emission included angle of a corresponding red and green bidirectional laser lamp cap in a preset laser lamp lattice according to the diameter of a preset polishing head; And controlling the red and green bidirectional laser lamp holders to project the lamplight patterns on each defect according to the light emitting included angles at the defect coordinates based on a preset laser lamp lattice according to the defect coordinates so as to mark the defects. With reference to the first aspect, in an implementation manner, the determining, according to the defect type and the defect size, a light pattern of a mark required by each defect includes: Determining the category to which each defect belongs based on a first preset classification table, the defect type and the defect size; And determining the lamplight pattern corresponding to each category to which the defect belongs based on the first preset classification table and the category to which the defect belongs. With reference to the first aspect, in an implementation manner, the determining, according to the obtained diameter of the preset polishing head, a light emission included angle of a corresponding red-green bidirectional laser lamp cap in a preset laser lamp lattice includes: obtaining the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, the lamp cap outlet radius of the red and green bidirectional laser lamp cap and the diameter of a preset polishing head, And calculating the minimum distance when the preset laser lamp lattice is mapped to the surface of the vehicle body, the lamp cap outlet radius of the red-green bidirectional laser lamp cap and the diameter of a preset polishing head according to a preset