A method for automatically measuring the distance of pcb graphic file components
A technology of automatic measurement and components, applied in the fields of instruments, calculations, electrical digital data processing, etc., can solve the problems of inability to accurately comply with distance specifications and regulations, and spending a lot of time.
Active Publication Date: 2020-05-08
FUZHOU UNIV
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Problems solved by technology
However, when the staff draws the PCB diagram, they only have a rough concept of the distance layout, and cannot accurately comply with the regulations on the distance specification.
Moreover, these specifications are numerous and complicated, and it takes a lot of time to manually confirm them one by one.
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[0063] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0064] This embodiment provides a method for automatically measuring the distance between components in PCB drawings, such as figure 1 shown, including the following steps:
[0065] Step S1: Generate a corresponding coordinate file in Excel format according to the drawn PCB drawing file;
[0066] Step S2: Import SQLite database, including component packaging parameter library and component distance specification library;
[0067] Step S3: establish a client system, and import the coordinate file and the SQLite database into the client system, thereby obtaining the component name, package name and coordinates in the coordinate file;
[0068] Step S4: the selection setting of the client system setting module, including the setting of the board type and the test type;
[0069] Step S5: The client system calculates the component distance, and judges whet...
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The invention relates to a method for automatically measuring the distance between PCB drawing file components. The method specifically includes the steps that a PCB drawing file is completed through PADS, and a coordinate file is generated, wherein the coordinate file includes all component names, component encapsulation names, component coordinates, rotation angles and the like on a PCB layout; the coordinate file is imported into a system and is combined with a component encapsulation parameter database, and the distance between the components is calculated through a K quadrant-nearest neighbor algorithm; the distance is compared with safety distance regulations, and the component not conforming to the distance regulations are found out. By means of the K quadrant-nearest neighbor algorithm, the components on the PCB layout are subjected to distance measuring and judging, the phenomenon that manual detection wastes time and labor is reduced, and the detection accuracy is improved.
Description
technical field [0001] The invention relates to the field of printed circuit boards, in particular to a method for automatically measuring the distance of components in a PCB graphic file. Background technique [0002] Printed Circuit Boards (Printed Circuit Boards) are the supports for electronic parts to connect and communicate with each other. Its quality directly affects the normal operation of electronic products, so the detection of PCB is necessary. From drawings to finished products, PCB involves multiple processes, and any problem in any process will affect the quality of the product. Due to the electrical and physical requirements between components, as well as the experience in industrial production, the distance between components is limited when drawing PCB drawings. Most manufacturers form their own distance specifications for distance requirements. However, when the staff drew the PCB diagram, they only had a rough concept of the distance layout, and could n...
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IPC IPC(8): G06F30/398
CPCG06F30/398
Inventor 林志贤叶芸郭太良姚剑敏张海燕
Owner FUZHOU UNIV