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A method and system for automatically checking bent wiring

A technology of automatic inspection and routing direction, applied in the direction of instrument, calculation, electrical and digital data processing, etc., can solve the problem of insufficient inspection accuracy and inspection efficiency of bending routing, and achieve shortened PCB development cycle, high accuracy, The effect of reducing the glass fiber effect

Active Publication Date: 2022-03-04
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present application provides a method and system for automatically checking bent wiring to solve the problem of insufficient inspection accuracy and inspection efficiency of bent wiring in the prior art

Method used

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  • A method and system for automatically checking bent wiring
  • A method and system for automatically checking bent wiring

Examples

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Embodiment 1

[0052] see figure 1, figure 1 It is a schematic flowchart of a method for automatically checking bent traces provided by the embodiment of the present application. Depend on figure 1 It can be seen that the method for automatically checking the bent wiring in this embodiment mainly includes the following process:

[0053] S1: Determine the signal line to be tested using the Zig-zag wiring technology.

[0054] The signal line to be tested in this embodiment adopts Zig-zag wiring technology, and a signal line to be tested includes multiple bent lines, but the lengths of different bent lines in the same signal line to be tested are not necessarily equal, so for For the same signal line to be tested, it is necessary to find out the bent traces whose length does not meet the requirements, so as to reduce the PCB glass fiber effect.

[0055] There are two methods for determining the signal line to be tested using the Zig-zag wiring technology in this embodiment:

[0056] The fi...

Embodiment 2

[0081] exist figure 1 On the basis of the illustrated embodiment see figure 2 , figure 2 It is a schematic structural diagram of a system for automatically checking bent traces provided by the embodiment of the present application. Depend on figure 2 It can be seen that the system for automatically checking the bent wiring in this embodiment mainly includes five parts: a signal line determination module to be tested, a threshold value setting module, a wiring length determination module, a judgment module and a recording module.

[0082] Wherein, the module for determining the signal line to be tested is used to determine the signal line to be tested using the Zig-zag wiring technology, and the signal line to be tested includes a plurality of bent lines. The threshold setting module is used to set the distance threshold of the bent trace in the signal line to be tested, and the distance threshold includes: a horizontal distance threshold or a vertical distance threshold....

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Abstract

The present application discloses a method and a system for automatically checking bent wiring, the method comprising: determining the signal line to be tested using Zig-zag wiring technology; setting the distance threshold of the bent wiring in the signal line to be tested; The ID information of the bent line in the signal line to be tested determines the length of the bent line; judges whether the length of the bent line is less than or equal to the distance threshold; if so, determines that the bent line of the signal line to be tested is qualified; Otherwise, it is judged that the bent wiring of the signal line to be tested is unqualified, and the unqualified bent wiring is recorded. The system includes a determination module of the signal line to be tested, a threshold value setting module, a wiring length determination module, a judgment module and a recording module. Through the method and system in the present application, the inspection accuracy and inspection efficiency of the bent wiring can be greatly improved, thereby effectively reducing the glass fiber effect of the PCB.

Description

technical field [0001] The present application relates to the technical field of PCB (Printed Circuit Board, also known as printed circuit board) design, in particular to a method and system for automatically checking bent wiring. Background technique [0002] The glass fiber effect refers to the phenomenon that the relative dielectric constant of the PCB dielectric layer changes locally due to the gaps generated by the interweaving of warp and weft threads in the PCB glass cloth. Specifically, the glass cloth of the PCB is woven from warp and weft threads, and there are gaps in the middle of the warp and weft threads. Therefore, there will be a situation where one of the two high-speed differential lines runs on the glass cloth and the other runs on the gap. Because the dielectric constant felt by the signal line is different when walking on the glass cloth and on the gap, there will be a time delay difference between the two lines of the high-speed differential line, there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/398G06F115/12
CPCG06F30/398
Inventor 赵帅李艳军
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD