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AOI component detection frame automatic generation method based on PCB coordinate transformation

A technology of coordinate transformation and automatic generation, which is applied in the field of image processing, can solve problems such as difficult development and impact on program running time, and achieve the effects of perfect functions, rich algorithms, and improved detection accuracy

Active Publication Date: 2017-04-19
ZHEJIANG SCI-TECH UNIV +1
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Problems solved by technology

Although this method makes the coordinates of the detection frame accurate, the large amount of data read will affect the running time of the program, and in practical applications, it is difficult to develop the coordinate conversion after reading the data in the Gerber file

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  • AOI component detection frame automatic generation method based on PCB coordinate transformation
  • AOI component detection frame automatic generation method based on PCB coordinate transformation
  • AOI component detection frame automatic generation method based on PCB coordinate transformation

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as Figure 4 As shown, the method of automatically generating AOI component detection frame based on PCB coordinate transformation is as follows:

[0037] Step 1, such as image 3 As shown, use Altium Desiger 15 drawing software to export the assembly output file and component packaging report of the PCB drawing, as follows:

[0038] 1.1 Import the project of the PCB drawing in the Altium Desiger 15 drawing software, and determine a coordinate point on the PCB drawing as the origin of the relative position of the components.

[0039] 1.2 In the Altium Designer 15 software, export the PCB drawing as an assembly output file in ".csv" format, and convert the assembly output file into a file "coordinate data.xls", and save it in the "PCB project name + PCB data" folder middle.

[0040] 1.3 Generate the component package library of the PCB dr...

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Abstract

The invention discloses an AOI component detection frame automatic generation method based on PCB coordinate transformation. A method for reading the coordinate data in a Gerber file and processing and mapping the data to a PCB picture is long in operation time. The method provided includes the following steps that the assembly output file and component packaging report of a PCB drawing are exported, and the assembly output file is converted into a file of 'cordinate data. xls'; an image acquisition system collects the PCB image to be detected and outputs the image to an image processing system; the image processing system reads the packaging report and imports the packaging data information into a file of "package size. xls', and the image processing system reads the packaging size data and the coordinate data to generate a component detection frame. By reading the PCB exported files and performing data processing, and then mapping the coordinate transformation to the image, so that a component detection frame can be generated.

Description

technical field [0001] The invention belongs to the technical field of image processing and relates to a method for positioning AOI components, in particular to a method for automatically generating a detection frame of an AOI component based on PCB coordinate transformation. Background technique [0002] Now automatic optical detection of PCB defects replaces manual detection, which improves work efficiency, but there are also certain side effects. AOI equipment on the industrial assembly line is usually written by AOI technicians. If the test program has missing pictures or wrong test frames, it will affect the entire batch of product testing. Therefore, it is of great significance to improve the operational performance of AOI equipment. [0003] At present, there are two main methods for setting the component frame in AOI, manual frame and read PCB export file data frame. The method of reading file data can improve efficiency very well. The current method is to read th...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/0004G06T2207/30141
Inventor 包晓敏李天宇杨晓城苏玮
Owner ZHEJIANG SCI-TECH UNIV
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