Feature-based PCB (Printed Circuit Board) back drilling file examination method, system, equipment and medium

Abstract

The invention relates to the technical field of circuit board design and processing, and discloses a feature-based PCB back drilling file examination method, system and device and a medium, and the method comprises the steps: obtaining the feature position information of a back drilling hole, a connecting wire and the like on a back drilling file, taking the center of the back drilling hole as the center of a circle, determining a back drilling identifier at the position of the corresponding back drilling hole according to a preset radius value, and obtaining the feature position information of the back drilling hole; judging and checking according to the distance between the connecting wire and the outer edge of the back drilling mark, when the judged distance result meets the requirement, indicating that the checking result meets the requirement, and when the judged distance result does not meet the requirement, indicating that the checking result does not meet the requirement. Compared with the prior art, the method has the advantages that the PCB backdrill file can be reviewed only by writing codes, the problems that time and labor are consumed and a certain missed review rate exists in the process of manually identifying and measuring each backdrill identifier and each signal layer in the prior art are solved, the labor cost and the time cost are greatly reduced, and the review precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board design and processing, and discloses a feature-based PCB backdrill file review method, system, equipment and medium. Background Art

[0002] As the precision of printed circuit boards continues to increase, how to ensure signal integrity has become a key issue for researchers. In multilayer boards, signal transmission between layers is mainly completed through vias, so it is very necessary to cover the vias between interconnected signal layers with copper. The remaining copper holes between signal layers that do not need to be connected will cause delays, reflections, scattering and other adverse effects on high-speed signal transmission. This section of copper holes between signal layers that do not need to be connected is called stubs (stubs), and the most widely used method to eliminate stubs is the back drilling process. Therefore, how to eliminate the stubs to ensure signal integrity without affecting other lines between signal layers has become a top priority.

[0003] The identification cost, that is, the design review cost, has become an indispensable part in the backdrill file design process. In the previous backdrill file review, the reviewer imported the backdrill file into the signal layer of the printed circuit board and manually identified and measured each backdrill mark and each signal layer. This method greatly increased the labor cost and time cost and had a certain rate of missed review. Summary of the invention

[0004] The purpose of the present invention is to provide a feature-based PCB backdrill file review method, system, device and medium, which greatly reduces labor costs and time costs and improves review accuracy.

[0005] In order to achieve the above technical effects, the technical solution adopted by the present invention is:

[0006] A feature-based PCB backdrill file review method, comprising:

[0007] Reading a backdrill file of a PCB circuit board to obtain location information of features on the PCB circuit board, wherein the features include backdrill holes and connecting wires;

[0008] Taking the center of the back-drilled hole as the center of the circle, determining the back-drilling mark at the corresponding back-drilled hole position according to a preset radius value, wherein the preset radius is greater than the radius of the back-drilled hole;

[0009] According to the relative position of the connecting wire and the back drill mark, it is judged whether the connecting wire design meets the requirements; if the connecting wire overlaps with the back drill mark, it is judged that the connecting wire design does not meet the requirements, otherwise it is judged that the connecting wire design meets the requirements.

[0010] Furthermore, the value of the preset radius is R+δR , where R is the radius of the back-drilled hole, δ R The value range is 10 to 11 mil.

[0011] Furthermore, the radius of the back-drilled hole is in the range of 6 to 24 mil.

[0012] In order to achieve the above technical effects, the present invention also provides a feature-based PCB backdrill file review system, which is used to implement the feature-based PCB backdrill file review method, including:

[0013] A data acquisition module, used to read the backdrill file of the PCB circuit board, and obtain the position information of the features on the PCB circuit board, wherein the features include the backdrill holes and the connecting wires;

[0014] A back-drill mark determination module, used to determine the back-drill mark at the corresponding back-drill hole position according to a preset radius value with the center of the back-drill hole as the center of the circle, wherein the preset radius is greater than the radius of the back-drill hole;

[0015] The judgment module is used to judge whether the connection wire design meets the requirements according to the relative position of the connection wire and the back drill mark; if the connection wire overlaps with the back drill mark, it is judged that the connection wire design does not meet the requirements, otherwise it is judged that the connection wire design meets the requirements.

[0016] Furthermore, in the back-drilling mark determination module, the value of the preset radius is R+δ R , where R is the radius of the back-drilled hole, δ R The value range is 10 to 11 mil.

[0017] Furthermore, in the back-drill mark determination module, the radius range of the back-drill hole is 6 to 24 mil.

[0018] To achieve the above technical effects, the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the feature-based PCB backdrill file review method when executing the computer program.

[0019] In order to achieve the above technical effects, the present invention also provides a computer-readable storage medium, which stores a computer program for executing the feature-based PCB backdrill file review method.

[0020] Compared with the prior art, the beneficial effect of the present invention is that the present invention can realize PCB backdrill file review only by writing code, avoiding the time-consuming and labor-intensive traditional process of manually identifying and measuring each backdrill mark and each signal layer and the problem of a certain missed review rate, greatly reducing labor costs and time costs, and improving review accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow chart of a feature-based PCB backdrill file review method in an embodiment;

[0022] Figure 2 It is a structural block diagram of a feature-based PCB backdrill file review system in an embodiment;

[0023] Among them, 1. Data acquisition module; 2. Back drilling identification determination module; 3. Judgment module. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments and drawings. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0025] Example

[0026] See also Figure 1-Figure 2 , a feature-based PCB backdrill file review method, comprising:

[0027] Reading a backdrill file of a PCB circuit board to obtain location information of features on the PCB circuit board, wherein the features include backdrill holes and connecting wires;

[0028] Taking the center of the back-drilled hole as the center of the circle, determining the back-drilling mark at the corresponding back-drilled hole position according to a preset radius value, wherein the preset radius is greater than the radius of the back-drilled hole;

[0029] According to the relative position of the connecting wire and the back drill mark, it is judged whether the connecting wire design meets the requirements; if the connecting wire overlaps with the back drill mark, it is judged that the connecting wire design does not meet the requirements, otherwise it is judged that the connecting wire design meets the requirements.

[0030] In this embodiment, by obtaining the characteristic position information of the backdrill hole, connecting wire and the like on the backdrill file, taking the center of the backdrill hole as the center of the circle, determining the backdrill mark at the corresponding backdrill hole position according to the preset radius value, and judging and reviewing according to the distance between the connecting wire and the outer edge of the backdrill mark, when the judged distance result meets the requirements, it means that the review result meets the requirements, and when the judged distance result does not meet the requirements, it means that the review result does not meet the requirements. This review method can realize the review of PCB backdrill files only by writing code, avoiding the traditional problem of time-consuming and labor-intensive manual identification and measurement between each backdrill mark and each signal layer, and a certain omission rate, greatly reducing labor costs and time costs, and improving review accuracy.

[0031] In this embodiment, the value of the preset radius is R+δ R , where R is the radius of the back-drilled hole, δ R The value range is 10 to 11 mil.

[0032] In this embodiment, the radius of the back-drilled hole ranges from 6 to 24 mil.

[0033] Based on the same inventive concept, this embodiment further provides a feature-based PCB backdrill file review system, which is used to implement the feature-based PCB backdrill file review method, including:

[0034] The data acquisition module 1 is used to read the backdrill file of the PCB circuit board and obtain the position information of the features on the PCB circuit board, wherein the features include the backdrill holes and the connecting wires;

[0035] A back-drill mark determination module 2 is used to determine the back-drill mark at the corresponding back-drill hole position according to a preset radius value with the center of the back-drill hole as the center of the circle, wherein the preset radius is greater than the radius of the back-drill hole;

[0036] The judgment module 3 is used to judge whether the connection wire design meets the requirements according to the relative position of the connection wire and the back drill mark; if the connection wire overlaps with the back drill mark, it is judged that the connection wire design does not meet the requirements, otherwise it is judged that the connection wire design meets the requirements.

[0037] Based on the same inventive concept, this embodiment also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the feature-based PCB backdrill file review method when executing the computer program.

[0038] Specifically, the computer device may be a computer terminal, a server or a similar computing device.

[0039] Based on the same inventive concept, this embodiment also provides a computer-readable storage medium, which stores a computer program for executing the feature-based PCB backdrill file review method.

[0040] Specifically, computer-readable storage media include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer-readable storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable storage media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feature-based PCB backdrill file review method, characterized in that: include: Reading a backdrill file of a PCB circuit board to obtain location information of features on the PCB circuit board, wherein the features include backdrill holes and connecting wires; Taking the center of the back-drilled hole as the center of the circle, determining the back-drilling mark at the corresponding back-drilled hole position according to a preset radius value, wherein the preset radius is greater than the radius of the back-drilled hole; According to the relative position of the connecting wire and the back drill mark, it is judged whether the connecting wire design meets the requirements; if the connecting wire overlaps with the back drill mark, it is judged that the connecting wire design does not meet the requirements, otherwise it is judged that the connecting wire design meets the requirements.

2. The feature-based PCB backdrill file review method according to claim 1, characterized in that: The preset radius is R+δ R , where R is the radius of the back-drilled hole, δ R The value range is 10 to 11 mil.

3. The feature-based PCB backdrill file review method according to claim 1, characterized in that: The radius of the back-drilled hole ranges from 6 to 24 mil.

4. A feature-based PCB backdrill file review system, used to implement the feature-based PCB backdrill file review method according to any one of claims 1 to 3, characterized in that: include: A data acquisition module, used to read the backdrill file of the PCB circuit board, and obtain the position information of the features on the PCB circuit board, wherein the features include the backdrill holes and the connecting wires; A back-drill mark determination module, used to determine the back-drill mark at the corresponding back-drill hole position according to a preset radius value with the center of the back-drill hole as the center of the circle, wherein the preset radius is greater than the radius of the back-drill hole; The judgment module is used to judge whether the connection wire design meets the requirements according to the relative position of the connection wire and the back drill mark; if the connection wire overlaps with the back drill mark, it is judged that the connection wire design does not meet the requirements, otherwise it is judged that the connection wire design meets the requirements.

5. The feature-based PCB backdrill file review system according to claim 4, characterized in that: In the back drilling mark determination module, the value of the preset radius is R+δ R , where R is the radius of the back-drilled hole, δ R The value range is 10 to 11 mil.

6. The feature-based PCB backdrill file review system according to claim 4, characterized in that: In the backdrill mark determination module, the radius range of the backdrill hole is 6 to 24 mil.

7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the feature-based PCB backdrill file review method described in any one of claims 1 to 3 is implemented.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for executing the feature-based PCB backdrill file review method according to any one of claims 1 to 3.

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