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A method and system for automatically checking bent traces

A technology for automatic inspection and routing direction, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problem of insufficient inspection accuracy and inspection efficiency of bending routing

Active Publication Date: 2019-03-08
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 traces
  • A method and system for automatically checking bent traces

Examples

Experimental program
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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

A method and system for automatically inspecting bent traces is disclosed. The method comprises the steps of determining a signal line to be tested adopting a Zig-zag routing technology; setting a distance threshold value of a bent trace in the signal line to be measured; determining the length of the bent trace according to the ID information of the bent trace in the signal line to be measured; judging whether the length of the bent trace is less than or equal to the distance threshold value; If yes, judging that the bending trace of the signal line to be tested is qualified; otherwise, judging the bending trace of the signal line to be tested to be unqualified, and recording the unqualified bending trace. The system comprises a to be tested signal line determination module, a threshold setting module, a trace length determination module, a judgment module and a recording module. With the method and the system of the present application, the inspection accuracy and efficiency of the bent traces can be greatly improved, thereby effectively reducing the PCB glass fiber effect.

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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IPC IPC(8): G06F17/50
CPCG06F30/398
Inventor 赵帅李艳军
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD