Printed circuit board wiring inspection method and device
A printed circuit board and path technology, applied in the field of printed circuit board wiring inspection methods and devices, can solve the problems of incomplete inspection, manual inspection, and complicated inspection process, and achieve the effect of realizing wiring efficiency and improving design quality
Active Publication Date: 2022-05-10
ZHEJIANG UNIVIEW TECH CO LTD
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Problems solved by technology
In the prior art, the detection of the network loop problem of the two-layer board is generally limited to the detection of continuity or not, and it still stays in the manual detection method. The inspection process is complicated and the detection is not comprehensive.
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[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0064] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0065] It should be noted that like numeral...
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The embodiment of the present application provides a printed circuit board wiring inspection method and device. By obtaining the signal lines in the top signal layer and the bottom signal layer in the printed circuit board and placing them in the newly created custom layer, according to the The overlapping area of the signal lines and the ground network vias connecting the top signal layer and the bottom signal layer detect whether the connectivity of the printed circuit board is qualified. If the connectivity is qualified, obtain the ground pins of any two components among the components belonging to the same circuit module in the top signal layer and the bottom signal layer, and check whether the connection path between the ground pins meets the preset length requirements. If it is satisfied, it can be determined that the printed circuit board wiring is qualified. An automatic inspection method for network connectivity of a printed circuit board and circuit module loop minimization is provided, which can improve wiring efficiency and improve the design quality of the PCB board.
Description
technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a method and device for inspecting printed circuit board wiring. Background technique [0002] When designing a printed circuit board, signal integrity and electromagnetic compatibility need to be considered. A common printed circuit board is generally composed of a surface signal layer (top signal layer and bottom signal layer), an inner signal layer, a ground layer copper skin, and a dielectric layer composed of insulating materials. In order to reduce costs, a two-layer board design is often used now. Due to the lack of a complete ground plane reference, it increases the difficulty of PCB (Print Circuit Board, printed circuit board) design and easily leads to increased signal return paths and signal integrity issues. In the prior art, the detection of the network loop problem of the two-layer board is generally limited to the detection of continuity or not, and...
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IPC IPC(8): G01R31/28
CPCG01R31/281G01R31/2812G01R31/2813
Inventor 张立辉陈欢洋
Owner ZHEJIANG UNIVIEW TECH CO LTD