WO2022001132A1 - Routing inspection method and apparatus for printed circuit board, and computer-readable storage medium - Google Patents

Abstract

A routing inspection method and apparatus for a printed circuit board, and a computer-readable storage medium. The method comprises: segmenting and extracting all differential pairs of winding line segments in differential signal lines; determining, on the basis of position information of each line segment in the differential pairs of winding line segments, a plurality of target line segment groups located at convex positions, for each target line segment group, determining a corresponding first target routing segment according to position information of preset positions on parallel line segments in the current target line segment group, and determining a second target routing segment that forms the same differential pair with the first target routing segment; calculating a length value of the first target routing segment and a vertical distance between the first target routing segment and the second target routing segment to serve as winding parameter values of the current target line segment group corresponding to target routing; and determining, on the basis of the winding parameter values and winding parameter standard values, whether the target routing meets preset winding rules. The present application solves the defects of time-consuming, labor-consuming, and easy-to-error in the related art by manually inspecting whether differential line routing rules meet the requirement.

Description

Printed circuit board trace detection method, device and computer-readable storage medium

This application requires the priority of the Chinese patent application filed with the China Patent Office on June 29, 2020, the application number is CN202010606040.6, and the invention name is "A printed circuit board trace detection method, device and computer-readable storage medium". rights, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of printed circuit board design, and in particular, to a method and device for detecting traces of printed circuit boards, and a computer-readable storage medium.

Background technique

With the rapid development of PCB (Printed Circuit Board, printed circuit board or printed circuit board) technology, there are more and more types of PCB board design methods. For example, Cadence, as the most widely used software in the industry, not only has powerful functions and multiple Supported by related software, it also provides an open secondary development interface and a relatively complete development language library. Users can conduct secondary development according to their own needs. Skill language is a high-level programming language built in Cadence software based on C language and LISP language. Cadence provides rich interactive functions for skill language. Studying skill language and then writing tools can greatly improve work efficiency.

For differential high-speed signals on the PCB, it is necessary to ensure that the lengths of the two differential signal traces are as consistent as possible. When winding, the industry's conventional rules such as 2S3W rule are usually used for wiring, as shown in Figure 1, 2S3W rule The height of the bump is required to be twice the normal line spacing, and the width of the bump is three times the normal line width. In order to ensure the stable transmission of differential signals on the PCB board, after the wiring design of the PCB board is completed, it is necessary to check whether there are any wiring that does not meet the conditions. As shown in Figure 2, the related technologies are all measured manually through the tools that come with the software. , first measure whether the line spacing of the differential signal line meets the 2S design, that is, whether it meets twice the normal line spacing, and then measure whether the bump meets the 3 times line width design. Due to the huge number of traces on the main board, it is not only costly to manually check whether each winding of the differential line meets the 2S3W rule, but also consumes a lot of manpower and financial resources, and is extremely inefficient. It is also prone to errors and omissions.

In view of this, it is a technical problem to be solved by those skilled in the art how to solve the drawbacks of manual manual detection of whether the differential line wiring rules meet the requirements in the related art, which is time-consuming, labor-intensive and error-prone.

SUMMARY OF THE INVENTION

The present application provides a wiring detection method, device and computer-readable storage medium for a printed circuit board, which solves the drawbacks of manual manual detection of whether the differential line wiring rules meet the requirements in the related art, which is time-consuming, labor-intensive and error-prone, and effectively improves the Detection efficiency and detection accuracy of differential line traces in PCB boards.

In order to solve the above-mentioned technical problems, the embodiments of the present invention provide the following technical solutions:

One aspect of the embodiments of the present invention provides a method for detecting traces of a printed circuit board, including:

Obtain the differential signal, and divide and extract all differential pair winding segments in the differential signal line;

Determine the target line segment group at the convex position based on the position information of each line segment in the differential pair winding line segment; the target line segment group includes multiple groups of target line segment groups, and each group of target line segment groups uniquely corresponds to a convex position;

For each target line segment group, determine the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group, and determine the second target that is the same differential pair with the first target line segment Line segment; calculate the length value of the first target line segment, the vertical distance between the first target line segment and the second target line segment, as the winding of the target line corresponding to the current target line segment group parameter value; based on the winding parameter value and the standard value of the winding parameter, determine whether the target routing meets the preset routing rule.

Optionally, the acquiring differential signals, and dividing and extracting all differential pair winding segments in the differential signal lines include:

According to the property setting request, set the target segment display property for the acquired differential signal to display the differential pair winding segment in the differential signal line;

All differential pair winding line segments in the differential signal line are divided and extracted based on the parent class corresponding to each line segment in the differential pair winding line segment.

Optionally, according to the attribute setting request, the target line segment display attribute setting is performed on the acquired differential signal, so as to display the differential pair winding segment in the differential signal line, including:

Obtain all differential signals of the server motherboard to be detected;

When receiving the attribute setting request, automatically add the differential line uncoupled length Diff_Uncoupled_Length attribute to the differential signal, and set the parameter value of the Diff_Uncoupled_Length attribute to the first preset width value;

When it is detected that the attribute setting of the differential signal is completed, the differential pair winding segment in the differential signal line is displayed, and the line width value of the differential pair winding segment is the first preset width value.

Optionally, the determining the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group includes:

When a filter parameter setting request is received, the filter is automatically set to the line segment clineseg mode, so as to select the target line segment at the corresponding level;

Obtain the coordinate information of the midpoint of the parallel line segment in the current target line segment group;

Based on the coordinate information of the midpoint position, the filter is invoked to select the first target line segment corresponding to the current target line segment group from the current layer.

Optionally, the determining of the target line segment group at the convex position based on the position information of each line segment in the differential pair of winding line segments includes:

Obtain the coordinates of the starting point and the coordinates of the end point of each line segment in the differential pair winding line segment;

A target line segment group located at the same convex position is determined based on the start point coordinates and end point coordinates of each line segment in the differential pair of winding line segments, and each target line segment group constitutes a target line segment group; the target line segment group includes a first oblique line segment, a parallel line segment , a second oblique line segment, the coordinates of the end point of the first oblique line segment are the same as the coordinates of the starting point of the parallel line segment, and the coordinates of the starting point of the second oblique line segment are the same as the coordinates of the end point of the parallel line segment;

The unique identification information and coordinate information of each line segment in each target line segment group are stored in a pre-created line segment record table, and the unique identification information and coordinate information of each line segment have a corresponding relationship.

Optionally, storing the unique identification information and coordinate information of each line segment in each target line segment group in a pre-created line segment record table includes:

Divide each target line segment group according to the parent class to which each line segment belongs;

The target line segment groups belonging to the same parent class are stored in the same row of the line segment record table.

Optionally, the calculating the length value of the first target alignment segment and the vertical distance between the first target alignment segment and the second target alignment segment includes:

Obtain the position coordinate information of the first target line segment and the second target line segment;

Calculate the length value of the first target alignment segment according to the coordinate value of the starting point and the coordinate value of the end point of the first target alignment segment;

The vertical distance value between the first target line segment and the second target line segment is calculated according to the coordinate value of the midpoint position of the first target line segment and the midpoint position coordinate value of the second target line segment .

Another aspect of the embodiments of the present invention provides a trace detection device for a printed circuit board, including:

Signal acquisition module for acquiring differential signals;

The line segment extraction module is used to divide and extract all differential pair winding segments in the differential signal line;

The convex line segment positioning module is used to determine the target line segment group at the convex position based on the position information of each line segment in the differential pair winding line segment; the target line segment group includes multiple groups of target line segment groups, and each group of target line segment groups is unique corresponds to a raised position;

The winding detection module is used to determine, for each target line segment group, the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group, and determine that the first target line segment is The second target line segment of the same differential pair; calculate the length value of the first target line segment, the vertical distance between the first target line segment and the second target line segment, as the current target line segment group Corresponds to the winding parameter value of the target routing; based on the routing parameter value and the standard value of the routing parameter, it is judged whether the target routing satisfies the preset routing rule.

An embodiment of the present invention further provides a device for detecting traces of a printed circuit board, including a processor, which is configured to implement the traces of the printed circuit board as described in any preceding item when the processor executes a computer program stored in a memory The steps of the detection method.

Finally, an embodiment of the present invention further provides a computer-readable storage medium, where a trace detection program of a printed circuit board is stored on the computer-readable storage medium, and the trace detection program of the printed circuit board is processed by a processor When executed, the steps of implementing the method for detecting traces of printed circuit boards as described in any one of the preceding items.

The advantage of the technical solution provided by the present application is that each line segment of all differential pair winding line segments in the differential signal line is divided and positioned, and the line segment located at the convex position is determined, so that two lines of the same differential pair can be calculated. The distance of the line segment and the length of the raised parallel line segment, and the calculated line spacing and line segment length are compared with the standard values required by the corresponding winding rules, and then it can be realized whether the line segment at each raised position satisfies the winding requirements. The wiring rules are automatically judged, and the entire detection process does not require manual participation, which solves the drawbacks of manual manual detection of whether the differential wiring rules meet the requirements, which is time-consuming, labor-intensive and error-prone, and effectively improves the detection efficiency of differential wiring in the PCB board. Detection accuracy.

In addition, the embodiments of the present invention also provide a corresponding implementation device and a computer-readable storage medium for the trace detection method of the printed circuit board, which further makes the method more practical. The device and the computer-readable storage medium have corresponding advantages.

It is to be understood that the foregoing general description and the following detailed description are exemplary only and do not limit the present disclosure.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention or related technologies more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the present invention. For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram of a PCB board wiring of an exemplary application scenario provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of trace detection in an exemplary application scenario provided by an embodiment of the present invention;

3 is a schematic flowchart of a method for detecting traces of a printed circuit board according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a line segment of an exemplary application scenario provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram showing a winding line segment in a wiring segment provided by an embodiment of the present invention;

6 is a schematic diagram of segmenting and extracting a winding segment provided by an embodiment of the present invention;

7 is a schematic diagram of a relationship between a parent class and a line segment provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram showing the positioning and display of the first target routing segment according to an embodiment of the present invention;

9 is a schematic flowchart of another method for detecting traces of a printed circuit board according to an embodiment of the present invention;

FIG. 10 is a structural diagram of a specific implementation of a trace detection device for a printed circuit board provided by an embodiment of the present invention;

Fig. 11 is a structural diagram of another specific implementation manner of a trace detection device for a printed circuit board provided by an embodiment of the present invention.

detailed description

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second", "third", "fourth", etc. in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or elements is not limited to the listed steps or elements, but may include unlisted steps or elements.

After introducing the technical solutions of the embodiments of the present invention, various non-limiting implementations of the present application are described in detail below.

Referring first to FIG. 3, FIG. 3 is a schematic flowchart of a method for detecting traces on a printed circuit board provided by an embodiment of the present invention. The embodiment of the present invention may include the following contents:

S301: Obtain a differential signal, and divide and extract all differential pair winding segments in the differential signal line.

In this application, all differential signals of the server motherboard to be detected currently can be obtained from the PCB design drawing. It can be understood that some of the differential signal lines are straight lines, and some of the lines are windings, and the windings generally need to meet the conventional rules in this field, such as the 2S3W winding rules. Whether the winding part of all differential signal lines in the server motherboard meets the winding rules, so after obtaining the differential signal, it is necessary to divide and extract all differential pair winding segments in the differential signal line for subsequent analysis whether it meets the winding requirements. line rules.

S302: Determine the target line segment group located at the convex position based on the position information of each line segment in the differential pair winding line segment.

The differential pair winding segment in the embodiment of the present invention is the winding part of the differential signal line, the target segment is a part of the differential pair winding segment, the target segment group includes multiple target segment groups, and each target segment group uniquely corresponds to a protrusion Position, a set of target line segments includes a first oblique line, a parallel line segment and a second oblique line. As shown in Figure 2, the end point of the first oblique line coincides with the starting point of the parallel line segment, and the end point of the parallel line segment and the second oblique line The starting points of each line coincide with each other, so a target line segment group uniquely corresponding to the convex position can be determined according to the position information of each line segment.

S303: For each target line segment group, determine the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group, and determine the second target that is the same differential pair as the first target line segment Line segment; calculate the length value of the first target line segment, the vertical distance between the first target line segment and the second target line segment, as the winding parameter value of the target line corresponding to the current target line segment group; based on the winding parameter value and the standard value of the routing parameters to determine whether the target routing meets the preset routing rules.

After the target line segment group is determined in S302, the winding rules are analyzed for each target line segment group in turn according to the method of S303. The standard value of the winding parameter is the standard value of the winding parameter specified under the preset winding rules, and the calculated value of the winding parameter is the actual parameter value of the routing part that is unique to the current target segment group. If the standard values of the line parameters are the same, it proves that the only corresponding routing part of the current target line segment group conforms to the preset routing rules. Some do not meet the preset routing rules.

In the technical solution provided by the embodiment of the present invention, each line segment of all differential pair winding line segments in the differential signal line is divided and positioned, and the line segment located at the convex position is determined, so that the two lines of the same differential pair can be calculated. The distance of the line segment and the length of the raised parallel line segment, and the calculated line spacing and length of the line segment are compared with the standard values required by the corresponding winding rules, and then it can be realized whether the line segment of each raised position meets the requirements. The wiring rules are automatically judged, and the whole detection process does not require manual participation, which solves the drawbacks of manual manual detection of whether the differential wiring rules meet the requirements, which is time-consuming, labor-intensive and error-prone, and effectively improves the detection efficiency of differential wiring in the PCB board. and detection accuracy.

In the above-mentioned embodiment, there is no limitation on how to perform step S101. In this embodiment, an implementation of dividing and extracting differential pairs of winding line segments is given, which can more accurately and efficiently extract all the differential signals in the differential signal lines. For the winding segment, the following steps can be included:

A1: Obtain all differential signals of the server motherboard to be detected.

A2: According to the property setting request, set the target segment display property for the acquired differential signal to display the differential pair winding segment in the differential signal line.

As shown in Figures 4-6, Figure 4 shows the differential signal line, Figure 5 shows the differential pair winding line segment in the differential pair winding line segment, and Figure 6 shows the extracted differential pair winding line segment. For example, for Cadence software, when receiving the attribute setting request sent by the user, it automatically adds the Diff_Uncoupled_Length attribute of the differential line uncoupled length to the differential signal, and sets the parameter value of the Diff_Uncoupled_Length attribute to the first preset width value, the first preset width value. The width value is set to be the width value of the display line segment, and the first preset width value may be, for example, 1 mil. When it is detected that the attribute setting of the differential signal is completed, the differential pair winding segment in the differential signal line is displayed, and the line width value of the differential pair winding segment is the first preset width value.

A3: Divide and extract all differential pair winding segments in the differential signal line based on the parent class corresponding to each segment in the differential pair winding segment.

In the embodiment of the present invention, in the previous step, only the differential pair winding segments in the differential signal line are displayed, while other non-differential pair winding segments also exist. In order to analyze the differential pair winding segments, it is necessary to It is extracted separately, as shown in Figure 6. This application will set a parent class for each line segment in the differential signal line in advance, one parent class can correspond to multiple line segments, and each line segment in the differential pair winding line segment can be searched according to the parent class. For example, the same parent class can be set for all raised positions of the routing. As shown in Figure 7, the framed line segments are all line segments belonging to the same parent class.

In the above embodiment, there is no limitation on how to perform step S102. In this embodiment, an implementation method for determining the target line segment group is provided, which can locate the target line segment more quickly and conveniently. This embodiment of the present invention may include the following steps:

B1: Obtain the start and end coordinates of each segment in the differential pair winding segment.

B2: Determine the target line segment group located at the same convex position based on the start point coordinates and end point coordinates of each line segment in the differential pair winding line segment, and each target line segment group constitutes a target line segment group.

The target line segment group includes a first oblique line segment, a parallel line segment, and a second oblique line segment. The coordinates of the end point of the first oblique line segment are the same as the coordinates of the starting point of the parallel line segment, and the coordinates of the starting point of the second oblique line segment are the same as the coordinates of the end point of the parallel line segment.

B3: Store the unique identification information and coordinate information of each line segment in each target line segment group in a pre-created line segment record table, and the unique identification information and coordinate information of each line segment have a corresponding relationship.

In order to facilitate the rapid reading of subsequent data information, the information of each line segment in each target line segment group determined in step B2 can be recorded in a table, and a unique identification information can be set for each line segment in order to facilitate retrieval and query. Information All information for the required line segment can be retrieved in a table. In addition to recording the coordinate information and identification information of each line segment in the line segment record table, those skilled in the art can flexibly select according to actual needs, which is not limited in this application. As an optional implementation, each target line segment group can also be divided according to the parent class to which each line segment belongs; the target line segment group belonging to the same parent class is stored in the same row of the line segment record table, as shown below:

table[parentGroups1]=list((seg1seg2seg3)(seg1seg2seg3)...));

table[parentGroups2]=list((seg1seg2seg3)(seg1seg2seg3)...));

table[parentGroupsn]=list((seg1seg2seg3)(seg1seg2seg3)...));

Among them, parentGroups represents the parent class, (seg1seg2seg3) constitutes a set of target segment groups, and seg1, seg2 and seg3 are the three segments included in the target segment group.

In the above-mentioned embodiment, there is no limitation on how to perform step S103 to determine the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group. An implementation manner of determining the target alignment segment can locate the first target alignment segment more quickly and conveniently. This embodiment of the present invention may include the following steps:

C1: When a filter parameter setting request is received, the filter is automatically set to the clineseg line segment mode to select the target line segment at the corresponding level.

C2: Obtain the coordinate information of the midpoint of the parallel line segments in the current target line segment group.

C3: Based on the coordinate information of the midpoint position, call the filter to select the first target line segment corresponding to the current target line segment group from the current layer.

Cycle each level, for example, you can open the etch/top level, obtain the midpoint of the parallel line segment by obtaining the preset clineseg mode filter, and choose to add the midpoint of the parallel line segment to obtain the corresponding line segment at this point. , as shown in Figure 8. Since each differential pair has two traces, after determining one of the traces, net->diffpair can be obtained, the other differential trace can be found through the differential pair diffpair, and the line segment cline on the net can be obtained, that is, the first target. Another line segment corresponding to the line segment is called the second target line segment. Obtain the position coordinate information of the first target line segment and the second target line segment; the length value w of the first target line segment can be calculated according to the starting point coordinate value and the end point coordinate value of the first target line segment; then according to the first target line segment The vertical distance value s between the first target line segment and the second target line segment is obtained by calculating the coordinate value of the midpoint position of the line segment and the coordinate value of the midpoint position of the second target line segment. Obtain the constraint settings of the differential pair, that is, obtain the line spacing airgap and line width width of the differential pair that match the preset routing rules. According to the airgap and width, compare the calculated s and w respectively. If both are the same, the preset winding rules are met. If only one of them does not meet the winding rules, the winding rules cannot be met, and the non-compliance with the winding rules can be recorded. the bulge.

Finally, referring to FIG. 9 , the present application also provides another method for detecting traces of printed circuit boards. This embodiment of the present invention can be applied to Cadence software, for example, and may specifically include the following:

S901: Acquire all differential signals of the mainboard of the server to be detected.

S902: When an attribute setting request is received, automatically add a differential line uncoupled length Diff_Uncoupled_Length attribute to the differential signal, and simultaneously set the parameter value of the Diff_Uncoupled_Length attribute to a first preset width value.

S903: When it is detected that the setting of the differential signal attribute is completed, the differential pair winding segment in the differential signal line is displayed, and the line width value of the differential pair winding segment is a first preset width value.

S904: Divide and extract all differential pair winding segments in the differential signal line based on the parent class corresponding to each segment in the differential pair winding segment.

S905: Obtain the coordinates of the start point and the end point of each line segment in the differential pair winding line segment.

S906: Determine a target line segment group located at the same convex position based on the start point coordinates and end point coordinates of each line segment in the differential pair winding line segment, and each target line segment group constitutes a target line segment group.

S907: Store the unique identification information and coordinate information of each line segment in each target line segment group in a pre-created line segment record table, and the unique identification information and coordinate information of each line segment have a corresponding relationship.

S908: When a filter parameter setting request is received, the filter is automatically set to the clineseg mode, so as to select the target line segment at the corresponding level.

S909: For each target line segment group, obtain the midpoint position coordinate information of the parallel line segments in the current target line segment group, and based on the midpoint position coordinate information, call a filter to select the first target walk corresponding to the current target line segment group from the current layer line segment.

S910: Determine a second target line segment that is the same differential pair as the first target line segment.

S911: Calculate the length value of the first target line segment and the vertical distance between the first target line segment and the second target line segment, as the winding parameter value of the target line corresponding to the current target line segment group.

S912: Acquire a standard value of the winding parameter, and judge whether the target routing meets the preset routing rule based on the value of the winding parameter and the standard value of the winding parameter.

As can be seen from the above, the embodiment of the present invention solves the drawbacks of manual manual detection of whether the differential line wiring rules meet the requirements of the related art, which is time-consuming, labor-intensive and error-prone, and effectively improves the detection efficiency and detection accuracy of differential line routing in the PCB board.

It should be noted that there is no strict sequence of execution between the steps in this application. As long as the logical sequence is followed, these steps can be executed simultaneously or in a certain preset sequence. This is a schematic way, and does not mean that there can only be such an execution order.

The embodiment of the present invention also provides a corresponding device for a method for detecting a trace of a printed circuit board, which further makes the method more practical. Wherein, the device can be described from the perspective of functional modules and the perspective of hardware. The following is an introduction to the trace detection device of the printed circuit board provided by the embodiment of the present invention. The trace detection device of the printed circuit board described below and the trace detection method of the printed circuit board described above can be referred to each other correspondingly.

From the perspective of functional modules, refer to FIG. 10 . FIG. 10 is a structural diagram of a trace detection device for a printed circuit board provided in an embodiment of the present invention in a specific implementation manner. The device may include:

The signal acquisition module 101 is used to acquire the differential signal.

The line segment extraction module 102 is used for dividing and extracting all differential pair winding line segments in the differential signal line.

The convex line segment positioning module 103 is used to determine the target line segment group at the convex position based on the position information of each line segment in the differential pair winding line segment; the target line segment group includes multiple groups of target line segment groups, and each group of target line segment groups uniquely corresponds to a convex line start position.

The winding detection module 104 is used for each group of target line segments to determine the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group, and determine that it is the same as the first target line segment The second target line segment of the differential pair; calculate the length value of the first target line segment, the vertical distance between the first target line segment and the second target line segment, as the winding parameter value of the target line corresponding to the current target line segment group ; Determine whether the target routing meets the preset routing rules based on the winding parameter value and the standard value of the winding parameter.

Optionally, in some implementations of this embodiment, the line segment extraction module 102 may include:

The property setting sub-module is used to set the target segment display property of the acquired differential signal according to the property setting request, so as to display the differential pair winding segment in the differential signal line;

The segmentation and extraction sub-module is used to segment and extract all differential pair winding segments in the differential signal line based on the parent class corresponding to each segment in the differential pair winding segment.

In some implementation manners of the present invention, the attribute setting sub-module may further include, for example:

The attribute assignment unit is used to automatically add the Diff_Uncoupled_Length attribute to the differential signal when receiving the attribute setting request, and set the parameter value of the Diff_Uncoupled_Length attribute to the first preset width value;

The display unit is configured to display the differential pair winding segment in the differential signal line when it is detected that the differential signal attribute setting is completed, and the line width value of the differential pair winding segment is a first preset width value.

Optionally, in other implementations of the embodiments of the present invention, the wire winding detection module 104 includes a target wire positioning sub-module, and the target wire positioning sub-module may include:

The filter setting unit is used to automatically set the filter to the clineseg mode when receiving the filter parameter setting request, so as to select the target line segment at the corresponding level;

a coordinate information obtaining unit, used for obtaining the coordinate information of the midpoint position of the parallel line segments in the current target line segment group;

The line segment selection unit is used to call the filter to select the first target line segment corresponding to the current target line segment group from the current layer based on the position coordinate information of the midpoint.

In some other implementations of the embodiments of the present invention, the target routing positioning sub-module may further include, for example:

an information acquisition unit, used for acquiring the position coordinate information of the first target line segment and the second target line segment;

a length calculation unit, used for calculating the length value of the first target line segment according to the coordinate value of the starting point and the coordinate value of the end point of the first target line segment;

The distance calculation unit is configured to calculate the vertical distance value between the first target alignment segment and the second target alignment segment according to the midpoint position coordinate value of the first target alignment segment and the midpoint position coordinate value of the second target alignment segment.

As an optional implementation manner, the convex line segment positioning module 103 may further include, for example:

The starting point coordinate acquisition sub-module is used to obtain the starting point coordinates and end point coordinates of each line segment in the differential pair winding line segment;

The target line segment group generation sub-module is used to determine the target line segment group located at the same convex position based on the starting point coordinates and the end point coordinates of each line segment in the differential pair winding line segment, and each target line segment group constitutes a target line segment group; the target line segment group includes the first For oblique line segment, parallel line segment, and second oblique line segment, the coordinates of the end point of the first oblique line segment are the same as the coordinates of the starting point of the parallel line segment, and the coordinates of the starting point of the second oblique line segment are the same as the coordinates of the end point of the parallel line segment;

The information recording submodule is used to store the unique identification information and coordinate information of each line segment in each target line segment group in the pre-created line segment record table, and the unique identification information and coordinate information of each line segment have a corresponding relationship.

In some implementations of the embodiments of the present invention, the information recording submodule may include:

The division unit is used to divide each target line segment group according to the parent class to which each line segment belongs;

The record unit is used to store the target segment group belonging to the same parent class in the same row of the segment record table.

The functions of each functional module of the trace detection device for a printed circuit board according to the embodiment of the present invention can be specifically implemented according to the method in the above method embodiment, and the specific implementation process can refer to the relevant description of the above method embodiment, which is not described here. Repeat.

As can be seen from the above, the embodiment of the present invention solves the drawbacks of manual manual detection of whether the differential line wiring rules meet the requirements of the related art, which is time-consuming, labor-intensive and error-prone, and effectively improves the detection efficiency and detection accuracy of differential line routing in the PCB board.

The above-mentioned trace detection device for printed circuit boards is described from the perspective of functional modules. Further, the present application also provides a trace detection device for printed circuit boards, which is described from the perspective of hardware. FIG. 11 is a structural diagram of another printed circuit board trace detection device according to an embodiment of the present application. As shown in FIG. 11, the apparatus includes a memory 110 for storing computer programs;

The processor 111 is configured to implement the steps of the method for detecting traces of a printed circuit board as mentioned in any of the foregoing embodiments when executing the computer program.

The processor 111 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 111 can use at least one hardware form among DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array, programmable logic array) accomplish. The processor 111 may also include a main processor and a coprocessor. The main processor is a processor used to process data in the wake-up state, also called CPU (Central Processing Unit, central processing unit); the coprocessor is A low-power processor for processing data in a standby state. In some embodiments, the processor 111 may be integrated with a GPU (Graphics Processing Unit, image processor), and the GPU is used for rendering and drawing the content that needs to be displayed on the display screen. In some embodiments, the processor 111 may further include an AI (Artificial Intelligence, artificial intelligence) processor, where the AI processor is used to process computing operations related to machine learning.

Memory 110 may include one or more computer-readable storage media, which may be non-transitory. Memory 110 may also include high-speed random access memory, as well as non-volatile memory, such as one or more disk storage devices, flash storage devices. In this embodiment, the memory 110 is at least used to store the following computer program 1101 , wherein, after the computer program is loaded and executed by the processor 111 , it can realize the related information of the trace detection method of the printed circuit board disclosed in any of the foregoing embodiments. step. In addition, the resources stored in the memory 110 may also include an operating system 1102, data 1103, etc., and the storage mode may be short-term storage or permanent storage. The operating system 1102 may include Windows, Unix, Linux, and the like. The data 1103 may include, but is not limited to, data corresponding to the test results, and the like.

In some embodiments, the trace detection device of the printed circuit board may further include a display screen 112 , an input/output interface 113 , a communication interface 114 , a power supply 115 and a communication bus 116 .

Those skilled in the art can understand that the structure shown in FIG. 11 does not constitute a limitation on the trace detection device of the printed circuit board, and may include more or less components than the one shown, such as the sensor 117 .

The functions of each functional module of the trace detection device for a printed circuit board according to the embodiment of the present invention can be specifically implemented according to the method in the above method embodiment, and the specific implementation process can refer to the relevant description of the above method embodiment, which is not described here. Repeat.

As can be seen from the above, the embodiment of the present invention solves the drawbacks of manual manual detection of whether the differential line wiring rules meet the requirements of the related art, which is time-consuming, labor-intensive and error-prone, and effectively improves the detection efficiency and detection accuracy of differential line routing in the PCB board.

It can be understood that, if the trace detection method of the printed circuit board in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , to execute all or part of the steps of the methods in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), electrically erasable programmable ROM, registers, hard disks, programmable Various media that can store program codes, such as removable disks, CD-ROMs, magnetic disks, or optical disks.

Based on this, an embodiment of the present invention further provides a computer-readable storage medium, which stores a trace detection program of a printed circuit board, and the trace detection program of the printed circuit board is executed as any one of the above when executed by a processor. For example, the steps of the trace detection method of the printed circuit board.

The functions of each functional module of the computer-readable storage medium according to the embodiments of the present invention may be specifically implemented according to the methods in the foregoing method embodiments, and the specific implementation process may refer to the relevant descriptions of the foregoing method embodiments, which will not be repeated here.

As can be seen from the above, the embodiment of the present invention solves the drawbacks of manual manual detection of whether the differential line wiring rules meet the requirements of the related art, which is time-consuming, labor-intensive and error-prone, and effectively improves the detection efficiency and detection accuracy of differential line routing in the PCB board.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments may be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

Professionals may further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the possibilities of hardware and software. Interchangeability, the above description has generally described the components and steps of each example in terms of functionality. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

The method, device and computer-readable storage medium for trace detection of a printed circuit board provided by the present application have been described above in detail. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims (10)

1. A method for detecting traces of printed circuit boards, comprising:

   Obtain the differential signal, and divide and extract all differential pair winding segments in the differential signal line;

   Determine the target line segment group at the convex position based on the position information of each line segment in the differential pair winding line segment; the target line segment group includes multiple groups of target line segment groups, and each group of target line segment groups uniquely corresponds to a convex position;

   For each target line segment group, determine the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group, and determine the second target that is the same differential pair with the first target line segment Line segment; calculate the length value of the first target line segment, the vertical distance between the first target line segment and the second target line segment, as the winding of the target line corresponding to the current target line segment group parameter value; based on the winding parameter value and the standard value of the winding parameter, determine whether the target routing meets the preset routing rule.
2. The method for detecting traces of a printed circuit board according to claim 1, wherein the acquiring differential signals, and dividing and extracting all differential pair winding segments in the differential signal lines comprises:

   According to the property setting request, set the target segment display property for the acquired differential signal to display the differential pair winding segment in the differential signal line;

   All differential pair winding line segments in the differential signal line are divided and extracted based on the parent class corresponding to each line segment in the differential pair winding line segment.
3. The method for detecting traces of a printed circuit board according to claim 2, wherein the target line segment display attribute setting is performed on the acquired differential signal according to the attribute setting request, so as to display the differential pair windings in the differential signal line. Line segments include:

   Obtain all differential signals of the server motherboard to be detected;

   When receiving an attribute setting request, automatically adding a differential line uncoupled length attribute to the differential signal, and setting the parameter value of the differential line uncoupled length attribute to a first preset width value;

   When it is detected that the attribute setting of the differential signal is completed, the differential pair winding segment in the differential signal line is displayed, and the line width value of the differential pair winding segment is the first preset width value.
4. The method for detecting traces of a printed circuit board according to claim 1, wherein the determining the corresponding first target trace segment according to the position information of the preset position on the parallel segment in the current target segment group comprises:

   When a filter parameter setting request is received, the filter is automatically set to the line segment mode, so as to select the target line segment at the corresponding level;

   Obtain the coordinate information of the midpoint of the parallel line segment in the current target line segment group;

   Based on the coordinate information of the midpoint position, the filter is invoked to select the first target line segment corresponding to the current target line segment group from the current layer.
5. The method for detecting traces on a printed circuit board according to any one of claims 1 to 4, wherein the target line segment located at the convex position is determined based on the position information of each line segment in the differential pair of winding line segments Groups include:

   Obtain the coordinates of the starting point and the coordinates of the end point of each line segment in the differential pair winding line segment;

   A target line segment group located at the same convex position is determined based on the start point coordinates and end point coordinates of each line segment in the differential pair of winding line segments, and each target line segment group constitutes a target line segment group; the target line segment group includes a first oblique line segment, a parallel line segment , a second oblique line segment, the coordinates of the end point of the first oblique line segment are the same as the coordinates of the starting point of the parallel line segment, and the coordinates of the starting point of the second oblique line segment are the same as the coordinates of the end point of the parallel line segment;

   The unique identification information and coordinate information of each line segment in each target line segment group are stored in a pre-created line segment record table, and the unique identification information and coordinate information of each line segment have a corresponding relationship.
6. The method for detecting traces of a printed circuit board according to claim 4, wherein the storing the unique identification information and coordinate information of each line segment in each target line segment group in a pre-created line segment record table includes:

   Divide each target line segment group according to the parent class to which each line segment belongs;

   The target line segment groups belonging to the same parent class are stored in the same row of the line segment record table.
7. The method for detecting traces of a printed circuit board according to claim 6, wherein the calculating the length value of the first target trace segment, the first target trace segment and the second target trace segment The vertical distances include:

   Obtain the position coordinate information of the first target line segment and the second target line segment;

   Calculate the length value of the first target alignment segment according to the coordinate value of the starting point and the coordinate value of the end point of the first target alignment segment;

   The vertical distance value between the first target line segment and the second target line segment is calculated according to the coordinate value of the midpoint position of the first target line segment and the midpoint position coordinate value of the second target line segment .
8. A trace detection device for a printed circuit board, characterized in that it includes:

   Signal acquisition module for acquiring differential signals;

   The line segment extraction module is used to divide and extract all differential pair winding segments in the differential signal line;

   The convex line segment positioning module is used to determine the target line segment group at the convex position based on the position information of each line segment in the differential pair winding line segment; the target line segment group includes multiple groups of target line segment groups, and each group of target line segment groups is unique corresponds to a raised position;

   The winding detection module is used to determine, for each target line segment group, the corresponding first target line segment according to the position information of the preset position on the parallel line segment in the current target line segment group, and determine that the first target line segment is The second target line segment of the same differential pair; calculate the length value of the first target line segment, the vertical distance between the first target line segment and the second target line segment, as the current target line segment group Corresponds to the winding parameter value of the target routing; based on the routing parameter value and the standard value of the routing parameter, it is judged whether the target routing satisfies the preset routing rule.
9. A trace detection device for a printed circuit board, characterized in that it includes a processor, and the processor is used to implement the printed circuit board according to any one of claims 1 to 7 when executing a computer program stored in a memory. The steps of the trace detection method.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a trace detection program of a printed circuit board, and the trace detection program of the printed circuit board is executed by a processor to achieve the following: The steps of the trace detection method of the printed circuit board according to any one of claims 1 to 7.

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