CN111859847A - Method and device for detecting routing of printed circuit board and computer readable storage medium - Google Patents
Method and device for detecting routing of printed circuit board and computer readable storage medium Download PDFInfo
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- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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- G06F30/3947—Routing global
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Abstract
The application discloses a method and a device for detecting routing of a printed circuit board and a computer readable storage medium. The method comprises the steps of segmenting and extracting all differential pair winding line segments in the differential signal line; determining a plurality of groups of target line segment groups positioned at the convex positions based on the position information of each line segment in the differential pair winding line segments, determining a corresponding first target route segment according to the position information of a preset position on a parallel line segment in the current target line segment group for each group of target line segment groups, and determining a second target route segment which is the same differential pair with the first target route segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to be used as the winding parameter value of the target routing corresponding to the current target segment group; whether the target wiring meets the preset wiring rule or not is judged based on the winding parameter value and the winding parameter standard value, and the defects that whether the differential wiring rule meets the requirement or not through manual detection in the related art, time and labor are wasted, and mistakes are prone to occurring are overcome.
Description
Technical Field
The present disclosure relates to printed circuit board design technologies, and in particular, to a method and an apparatus for detecting traces on a printed circuit board, and a computer readable storage medium.
Background
With the rapid development of the PCB (Printed circuit board or Printed circuit board) technology, the types of PCB design methods are increasing, for example, Cadence is used as the most widely applied software in the industry, which not only has strong functions and multiple types of related software as support, but also provides an open secondary development interface and a more complete development language library, and users can perform secondary development according to their own needs. The sketch language is a high-level programming language which is built in Cadence software and is based on a C language and an LISP language, the Cadence provides rich interactive functions for the sketch language, and the work efficiency can be greatly improved by researching the sketch language and then writing tools.
For differential high-speed signals on a PCB, it is necessary to ensure that the lengths of two differential signal traces are as consistent as possible, and during routing, routing is usually performed according to rules defined in the industry, such as 2S3W rules, as shown in fig. 1, the 2S3W rule requires that the height of a protrusion is twice the normal line pitch, and the width of the protrusion is three times the normal line width. In order to ensure stable transmission of differential signals on the PCB, after the routing design of the PCB is completed, it is necessary to check whether there is a routing that does not satisfy the condition, as shown in fig. 2, in the related art, the manual measurement is performed by a tool provided by software, and first, whether the line spacing of the differential signal lines satisfies 2S design is measured, and then, whether the measurement protrusion satisfies 3 times of line width design is measured. Because the mainboard is walked line quantity huge, whether the artifical every wire winding department of manual inspection difference line satisfies 2S3W rule, not only consume a large amount of manpower financial resources, efficiency is extremely low, makes mistakes and omits moreover very easily.
In view of this, how to solve the problem that the manual detection of the differential line routing rule in the related art is time-consuming, labor-consuming and error-prone, is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The application provides a method and a device for detecting the routing of a printed circuit board and a computer readable storage medium, which solve the defects that whether the requirement is met by manually detecting the routing rule of a differential line in the related technology, the time and the labor are wasted, and the error is easy to occur, and effectively improve the detection efficiency and the detection accuracy of the differential line routing in the PCB.
In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:
in one aspect, an embodiment of the present invention provides a method for detecting traces on a printed circuit board, including:
acquiring a differential signal, and segmenting and extracting all differential pair winding line segments in a differential signal line;
determining a target line segment group located at a convex position based on the position information of each line segment in the differential pair winding line segments; the target line segment group comprises a plurality of groups of target line segment groups, and each group of target line segment groups only corresponds to one bulge position;
for each group of target line segment groups, determining a corresponding first target line segment according to position information of a preset position on a parallel line segment in the current target line segment group, and determining a second target line segment which is the same differential pair with the first target line segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to serve as the winding parameter value of the target routing corresponding to the current target segment group; and judging whether the target wiring meets a preset wiring rule or not based on the winding parameter value and the winding parameter standard value.
Optionally, the obtaining the differential signal and the segmenting and extracting all the differential pair wire segments in the differential signal line includes:
according to the attribute setting request, performing target line segment display attribute setting on the obtained differential signal to display a differential pair winding line segment in the differential signal line;
and segmenting and extracting all the differential pair winding line segments in the differential signal line based on the father class corresponding to each line segment in the differential pair winding line segments.
Optionally, the performing, according to the attribute setting request, the target segment display attribute setting on the obtained differential signal to display the differential pair winding segment in the differential signal line includes:
acquiring all differential signals of a server mainboard to be detected;
when an attribute setting request is received, automatically adding a Diff _ Unclosed _ Length attribute to the differential signal, and simultaneously setting a parameter value of the Diff _ Unclosed _ Length attribute as a first preset width value;
and when the differential signal attribute is detected to be set, displaying a differential pair winding line segment in the differential signal line, wherein the line width value of the differential pair winding line segment is the first preset width value.
Optionally, the determining, according to the position information of the preset position on the parallel line segment in the current target line segment group, the corresponding first target routing segment includes:
When a filter parameter setting request is received, automatically setting the filter to be in a clineseg mode so as to select a target route segment at a corresponding level;
acquiring the coordinate information of the midpoint position of the parallel line segments in the current target line segment group;
and calling the filter to select a first target route segment corresponding to the current target route segment group from the current layer based on the midpoint position coordinate information.
Optionally, the determining a target line segment group located at a convex position based on the position information of each line segment in the differential pair winding line segments includes:
acquiring the starting point coordinates and the end point coordinates of each line segment in the differential pair winding line segments;
determining target line segment groups located at the same convex position based on the start point coordinates and the end point coordinates of all line segments in the differential pair winding line segments, wherein all the target line segment groups form a target line segment group; the target line segment group comprises a first oblique line segment, a parallel line segment and a second oblique line segment, wherein the coordinate of the end point of the first oblique line segment is the same as the coordinate of the start point of the parallel line segment, and the coordinate of the start point of the second oblique line segment is the same as the coordinate of the end point of the parallel line segment;
and storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment record table, wherein the unique identification information and the coordinate information of each line segment have a corresponding relation.
Optionally, the storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment record table includes:
dividing each target line segment group according to the parent class to which each line segment belongs;
and storing the target line segment group belonging to the same parent class in the same row of the line segment record table.
Optionally, the calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment includes:
acquiring position coordinate information of the first target route segment and the second target route segment;
calculating to obtain a length value of the first target route segment according to the coordinate values of the starting point and the ending point of the first target route segment;
and calculating to obtain a vertical distance value between the first target route segment and the second target route segment according to the coordinate value of the midpoint position of the first target route segment and the coordinate value of the midpoint position of the second target route segment.
Another aspect of the embodiments of the present invention provides a trace detection device for a printed circuit board, including:
the signal acquisition module is used for acquiring a differential signal;
the line segment extraction module is used for segmenting and extracting all differential pair winding line segments in the differential signal line;
The projection line segment positioning module is used for determining a target line segment group positioned at a projection position based on the position information of each line segment in the differential pair winding line segments; the target line segment group comprises a plurality of groups of target line segment groups, and each group of target line segment groups only corresponds to one bulge position;
the winding detection module is used for determining a corresponding first target route segment according to position information of a preset position on a parallel line segment in the current target line segment group and determining a second target route segment which is the same differential pair with the first target route segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to serve as the winding parameter value of the target routing corresponding to the current target segment group; and judging whether the target wiring meets a preset wiring rule or not based on the winding parameter value and the winding parameter standard value.
The embodiment of the present invention further provides a trace detection device for a printed circuit board, including a processor, where the processor is configured to implement the steps of the trace detection method for a printed circuit board according to any one of the preceding items when executing a computer program stored in a memory.
The embodiment of the present invention finally 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 when the trace detection program of the printed circuit board is executed by a processor, the steps of the trace detection method of the printed circuit board are implemented as in any of the previous embodiments.
The technical scheme that the application provided's advantage lies in, each line segment is cut apart and is fixed a position in the wire winding line segment with all difference pairs in the differential signal line, the line segment that is located protruding position is confirmed, thereby can calculate the distance that obtains two line segments of same difference pair and the length of protruding parallel line segment, the required standard value of line interval and line segment length and corresponding wire winding rule that will calculate and obtain is compared, alright realize whether satisfying the wire winding rule to the line segment of every protruding position and carry out automated judgement, whole testing process need not artifical the participation, the drawback that whether having solved correlation technique and having satisfied the requirement through artifical manual detection difference line wiring rule is wasted time and energy still easily makeed mistakes, the detection efficiency and the detection accuracy of difference line wiring in the PCB board have effectively been improved.
In addition, the embodiment of the invention also provides a corresponding implementation device and a computer readable storage medium for the routing detection method of the printed circuit board, so that the method has higher practicability, and the device and the computer readable storage medium have corresponding advantages.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a PCB trace in an exemplary application scenario provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of trace detection in an exemplary application scenario according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a trace detection method for a printed circuit board according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a trace segment in an exemplary application scenario provided in an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a winding line segment in a routing line segment according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a segmentation and extraction of a winding line segment according to an embodiment of the present invention;
Fig. 7 is a schematic diagram of a relationship between parent classes and line segments according to an embodiment of the present invention;
fig. 8 is a schematic view illustrating positioning and displaying of a first target route segment according to an embodiment of the present invention;
fig. 9 is a schematic flowchart of another method for detecting traces on a printed circuit board according to an embodiment of the present invention;
fig. 10 is a structural diagram of a trace detecting device of a printed circuit board according to an embodiment of the present invention;
fig. 11 is a structural diagram of another specific embodiment of a trace detection device of a printed circuit board according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may include other steps or elements not expressly listed.
Having described the technical solutions of the embodiments of the present invention, various non-limiting embodiments of the present application are described in detail below.
Referring to fig. 3, fig. 3 is a schematic flow chart of a trace detection method for a printed circuit board according to an embodiment of the present invention, where the embodiment of the present invention includes the following steps:
s301: and acquiring a differential signal, and segmenting and extracting all differential pair winding line segments in the differential signal line.
In the application, all differential signals of the current server mainboard to be detected can be obtained from the PCB design drawing. It can be understood that, some of the differential signal lines are straight lines, some are wires, and the wires generally need to satisfy rules defined in the field, for example, 2S3W wire winding rules, and the present application is to detect whether the wire winding portions of all the differential signal lines in the main board of the server to be detected satisfy the wire winding rules, so after obtaining the differential signals, all the differential pairs of wire winding segments in the differential signal lines need to be divided and extracted for subsequent analysis to satisfy the wire winding rules.
S302: and determining a target line segment group located at the convex position based on the position information of each line segment in the differential pair winding line segments.
In the embodiment of the invention, the differential pair winding line segment is a winding part in the differential signal line, the target line segment is a part of the differential pair winding line segment, the target line segment group comprises a plurality of groups of target line segment groups, each group of target line segment groups uniquely corresponds to a bulge position, and each group of target line segment groups comprises 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 is coincided with the start point of the parallel line segment, and the end point of the parallel line segment is coincided with the start point of the second oblique line, so that the target line segment group uniquely corresponding to the bulge position can be determined according to the position information of each line.
S303: for each group of target line segment groups, determining a corresponding first target line segment according to position information of a preset position on a parallel line segment in the current target line segment group, and determining a second target line segment which is the same differential pair with the first target line segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to be used as the winding parameter value of the target routing corresponding to the current target segment group; and judging whether the target wiring meets the preset wiring rule or not based on the wiring parameter value and the wiring parameter standard value.
After the target line segment groups are determined in S302, the winding rule of each target line segment group is analyzed in sequence according to the method in S303. The winding parameter standard value is a standard winding parameter value specified under a preset winding rule, the calculated winding parameter value is an actual parameter value of a wiring part uniquely corresponding to the current target line segment group, if the winding parameter value is the same as the winding parameter standard value, the wiring part uniquely corresponding to the current target line segment group is proved to accord with the preset winding rule, and if the winding parameter value is not the same as the winding parameter standard value, the wiring part uniquely corresponding to the current target line segment group is proved to be not accord with the preset winding rule.
In the technical scheme provided by the embodiment of the invention, each line segment in the winding line segments of all differential pairs in the differential signal lines is divided and positioned, and the line segment positioned at the convex position is determined, so that the distance between two line segments of the same differential pair and the length of a convex parallel line segment can be calculated, the calculated line distance and the calculated line segment length are compared with the standard values required by the corresponding winding rule, and whether the wiring segment at each convex position meets the winding rule can be automatically judged.
In the foregoing embodiment, how to perform step S101 is not limited, and an implementation manner of dividing and extracting the differential pair winding line segments is provided in this embodiment, which can extract and obtain all the differential pair winding line segments in the differential signal lines more accurately and efficiently, and may include the following steps:
a1: and acquiring all differential signals of the mainboard of the server to be detected.
A2: and according to the attribute setting request, performing target line segment display attribute setting on the obtained differential signal to display the differential pair winding line segment in the differential signal line.
As shown in fig. 4-6, fig. 4 is a differential signal line, fig. 5 is a differential pair routing line segment shown in the differential pair routing line segment, and fig. 6 is an extracted differential pair routing line segment. For example, for Cadence software, when receiving an attribute setting request sent by a user, the Cadence software automatically adds a Diff _ unompled _ Length attribute to the differential signal, and sets a parameter value of the Diff _ unompled _ Length attribute to be a first preset width value, where the first preset width value is a width value of a display line segment, and the first preset width value may be, for example, 1 mil. And when the differential signal attribute is detected to be set, displaying a differential pair winding line segment in the differential signal line, wherein the line width value of the differential pair winding line segment is a first preset width value.
A3: and dividing and extracting all the differential pair winding line segments in the differential signal line based on the parents corresponding to the line segments in the differential pair winding line segments.
In the embodiment of the present invention, in the previous step, only the differential pair routing line segments in the differential signal lines are displayed, but the line segments of the other non-differential pair routing line segments also exist, and in order to analyze the differential pair routing line segments, the differential pair routing line segments need to be extracted separately, as shown in fig. 6. According to the method, a parent class can be set for each line segment in the differential signal line in advance, one parent class can correspond to a plurality of line segments, and each line segment in the differential pair winding line segments can be searched according to the parent class. For example, the same parent class may be set for all the raised positions of the trace, and as shown in fig. 7, the framed line segments are all line segments belonging to the same parent class.
In the foregoing embodiment, how to execute step S102 is not limited, and an implementation manner of determining a target line segment group is provided in this embodiment, so that a target line segment can be located more quickly and conveniently, which may include the following steps:
b1: and acquiring the start point coordinates and the end point coordinates of each line segment in the differential pair winding line segments.
B2: and determining target line segment groups located at the same convex position based on the start point coordinates and the end point coordinates of all line segments in the differential pair winding line segments, wherein all the target line segment groups form a target line segment group.
The target line segment group comprises a first oblique line segment, a parallel line segment and a second oblique line segment, wherein the end point coordinate of the first oblique line segment is the same as the start point coordinate of the parallel line segment, and the start point coordinate of the second oblique line segment is the same as the end point coordinate of the parallel line segment.
B3: and storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment record table, wherein the unique identification information and the coordinate information of each line segment have a corresponding relation.
In order to facilitate quick reading of subsequent data information, the information of each line segment in each target line segment group determined in step B2 may be recorded in a table, and in order to facilitate retrieval query, a unique identification information may be set for each line segment, and all information of the required line segment may be retrieved in the table by the identification information. In addition to recording the coordinate information and the identification information of each line segment, the line segment recording table may be flexibly selected by a person skilled in the art according to actual requirements, which is not limited in this application. As an optional implementation manner, each target line segment group can be further divided according to the parent class to which each line segment belongs; storing the target line segment group belonging to the same parent class in the same row of the line segment record table as follows:
table[parentGroups1]＝list((seg1 seg2 seg3)(seg1 seg2 seg3)……))；
table[parentGroups2]＝list((seg1 seg2 seg3)(seg1 seg2 seg3)……))；
table[parentGroupsn]＝list((seg1 seg2 seg3)(seg1 seg2 seg3)……))；
Wherein, parentGroups represent a parent class, (seg1 seg2 seg3) constitute a group of target line segments, and seg1, seg2 and seg3 are three line segments included in the target line segment group.
In the above embodiment, how to determine the corresponding first target routing segment according to the position information of the preset position on the parallel line segment in the current target line segment group in step S103 is not limited, but an implementation manner of determining the first target routing segment is provided in this embodiment, so that the first target routing segment can be located more quickly and conveniently, and the 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 be in clineseg mode, and a target route segment is selected at the corresponding level.
C2: and acquiring the coordinate information of the midpoint position of the parallel line segments in the current target line segment group.
C3: and based on the midpoint position coordinate information, calling a filter to select a first target route segment corresponding to the current target route segment group from the current layer.
And (4) circulating each layer, for example, opening the etch/top layer, acquiring the midpoint of the parallel line segment by acquiring a preset clineseg mode filter, and acquiring the corresponding line segment at the point by selecting and adding the midpoint of the parallel line segment, as shown in fig. 8. Because each differential pair has two wires, after one of the wires is determined, net- > diffpair can be obtained, the other differential wire is found through diffpair, and cline on the net is obtained, that is, the other wire corresponding to the first target wire segment is called as a second target wire segment. Acquiring position coordinate information of a first target route segment and a second target route segment; calculating to obtain a length value w of the first target route segment according to the coordinate values of the starting point and the ending point of the first target route segment; and then calculating to obtain a vertical distance value s between the first target route segment and the second target route segment according to the coordinate value of the midpoint position of the first target route segment and the coordinate value of the midpoint position of the second target route segment. And acquiring the constraint setting of the differential pair, namely acquiring the line spacing airgap and the line width of the differential pair matched with the preset winding rule. And respectively comparing the airgap and the width with the s and w obtained by calculation, if the two are the same, the preset winding rule is met, if only one does not meet the winding rule, the winding rule is not met, and the bulge which does not meet the winding rule can be recorded.
Finally, referring to fig. 9, the present application further provides another method for detecting a trace of a printed circuit board, and the embodiment of the present invention can be applied to Cadence software, which specifically includes the following steps:
s901: and acquiring all differential signals of the mainboard of the server to be detected.
S902: when an attribute setting request is received, a Diff _ Unclosed _ Length attribute is automatically added to the differential signal, and meanwhile, a parameter value of the Diff _ Unclosed _ Length attribute is set to be a first preset width value.
S903: and when the differential signal attribute is detected to be set, displaying a differential pair winding line segment in the differential signal line, wherein the line width value of the differential pair winding line segment is a first preset width value.
S904: and dividing and extracting all the differential pair winding line segments in the differential signal line based on the parents corresponding to the line segments in the differential pair winding line segments.
S905: and acquiring the start point coordinates and the end point coordinates of each line segment in the differential pair winding line segments.
S906: and determining target line segment groups located at the same convex position based on the start point coordinates and the end point coordinates of all line segments in the differential pair winding line segments, wherein all the target line segment groups form a target line segment group.
S907: and storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment record table, wherein the unique identification information and the coordinate information of each line segment have a corresponding relation.
S908: when a filter parameter setting request is received, the filter is automatically set to be in clineseg mode, and a target route segment is selected at the corresponding level.
S909: and acquiring midpoint position coordinate information of parallel line segments in the current target line segment group for each group of target line segment groups, and calling a filter to select a first target route segment corresponding to the current target line segment group from the current layer based on the midpoint position coordinate information.
S910: and determining a second target route segment which is the same differential pair with the first target route segment.
S911: and calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to be used as the winding parameter value of the target routing corresponding to the current target segment group.
S912: and acquiring a winding parameter standard value, and judging whether the target wiring meets a preset winding rule or not based on the winding parameter value and the winding parameter standard value.
Therefore, the embodiment of the invention solves the problems that the manual detection of whether the differential wire wiring rule meets the requirement in the prior art is time-consuming, labor-consuming and easy to make mistakes, and effectively improves the detection efficiency and the detection accuracy of differential wire routing in the PCB.
It should be noted that, in the present application, there is no strict sequential execution order among the steps, and as long as a logical order is met, the steps may be executed simultaneously or according to a certain preset order, and fig. 3 and fig. 9 are only schematic manners, and do not represent only such an execution order.
The embodiment of the invention also provides a corresponding device for the wiring detection method of the printed circuit board, so that the method has higher practicability. Wherein the means can be described separately from the functional module point of view and the hardware point of view. In the following, the trace detection device of the printed circuit board according to the embodiment of the present invention is introduced, and the trace detection device of the printed circuit board described below and the trace detection method of the printed circuit board described above may be referred to in correspondence with each other.
Based on the angle of the functional module, referring to fig. 10, fig. 10 is a structural diagram of a trace detecting device of a printed circuit board according to an embodiment of the present invention, in a specific implementation, the device may include:
a signal obtaining module 101, configured to obtain a differential signal.
And the line segment extraction module 102 is configured to extract line segments of all differential pair windings in the differential signal lines in a dividing manner.
The convex line segment positioning module 103 is used for determining a target line segment group located at a convex position based on the position information of each line segment in the differential pair winding line segments; the target line segment group comprises a plurality of groups of target line segment groups, and each group of target line segment groups only corresponds to one bulge position.
The winding detection module 104 is configured to determine, for each group of target line segment groups, a corresponding first target line segment according to position information of a preset position on a parallel line segment in the current target line segment group, and determine a second target line segment which is the same differential pair as the first target line segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to be used as the winding parameter value of the target routing corresponding to the current target segment group; and judging whether the target wiring meets the preset wiring rule or not based on the wiring parameter value and the wiring parameter standard value.
Optionally, in some implementations of this embodiment, the line segment extracting module 102 may include:
the attribute setting submodule is used for carrying out target line segment display attribute setting on the obtained differential signal according to the attribute setting request so as to display a differential pair winding line segment in the differential signal line;
and the division and extraction submodule is used for dividing and extracting all the differential pair winding line segments in the differential signal line based on the father class corresponding to each line segment in the differential pair winding line segments.
In some embodiments of the present invention, the attribute setting sub-module may further include:
the attribute assignment unit is used for automatically adding a Diff _ Unnoupled _ Length attribute to the differential signal when receiving an attribute setting request, and setting a parameter value of the Diff _ Unnoupled _ Length attribute as a first preset width value;
and the display unit is used for displaying the differential pair winding line segments in the differential signal lines when the differential signal attribute is detected to be set, and the line width value of the differential pair winding line segments is a first preset width value.
Optionally, in some other implementations of the embodiment of the present invention, the routing detection module 104 includes a target routing positioning sub-module, and the target routing positioning sub-module may include:
The filter setting unit is used for automatically setting the filter to be in a clineseg mode when receiving a filter parameter setting request so as to select a target route segment on a corresponding layer;
the coordinate information acquisition unit is used for acquiring the coordinate information of the midpoint position of the parallel line segments in the current target line segment group;
and the line segment selection unit is used for calling a filter to select a first target route segment corresponding to the current target line segment group from the current layer based on the midpoint position coordinate information.
In some other implementation manners of the embodiment of the present invention, the target routing positioning sub-module may further include:
the information acquisition unit is used for acquiring the position coordinate information of the first target route segment and the second target route segment;
the length calculation unit is used for calculating the length value of the first target route segment according to the start point coordinate value and the end point coordinate value of the first target route segment;
and the distance calculation unit is used for calculating to obtain a vertical distance value between the first target route segment and the second target route segment according to the midpoint position coordinate value of the first target route segment and the midpoint position coordinate value of the second target route segment.
As an optional implementation, the convex line segment positioning module 103 may further include:
The starting point coordinate acquisition submodule is used for acquiring the starting point coordinate and the end point coordinate of each line segment in the differential pair winding line segments;
the target line segment group generation submodule is used for determining a target line segment group located at the same convex position based on the start point coordinates and the end point coordinates of all line segments in the differential pair winding line segments, and all the target line segment groups form a target line segment group; the target line segment group comprises a first oblique line segment, a parallel line segment and a second oblique line segment, wherein the coordinate of the end point of the first oblique line segment is the same as the coordinate of the start point of the parallel line segment, and the coordinate of the start point of the second oblique line segment is the same as the coordinate of the end point of the parallel line segment;
and the information recording submodule is used for storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment recording table, and the unique identification information and the coordinate information of each line segment have a corresponding relation.
In some implementations of embodiments of the invention, the information recording sub-module may include:
the dividing unit is used for dividing each target line segment group according to the parent class to which each line segment belongs;
and the recording unit is used for storing the target line segment group belonging to the same parent class in the same row of the line segment recording table.
The functions of the functional modules of the trace detection device of the 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 may refer to the related description of the above method embodiment, which is not described herein again.
Therefore, the embodiment of the invention solves the problems that the manual detection of whether the differential wire wiring rule meets the requirement in the prior art is time-consuming, labor-consuming and easy to make mistakes, and effectively improves the detection efficiency and the detection accuracy of differential wire routing in the PCB.
The above mentioned trace detection device for a printed circuit board is described from the perspective of a functional module, and further, the present application also provides a trace detection device for a printed circuit board, which is described from the perspective of hardware. Fig. 11 is a structural diagram of another trace detecting device for a printed circuit board according to an embodiment of the present application. As shown in fig. 11, the apparatus includes a memory 110 for storing a computer program;
the processor 111 is configured to implement the steps of the trace detection method for a printed circuit board according to any of the above 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 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 111 may also include a main processor and a coprocessor, where the main processor is a processor for processing data in an awake state, and is also called a Central Processing Unit (CPU); a 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), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 111 may further include an AI (Artificial Intelligence) processor for processing 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 magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 110 is at least used for storing a computer program 1101, wherein after being loaded and executed by the processor 111, the computer program can implement the relevant steps of the trace detection method for a printed circuit board disclosed in any one of the foregoing embodiments. In addition, the resources stored in the memory 110 may also include an operating system 1102, data 1103, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 1102 may include Windows, Unix, Linux, etc. The data 1103 may include, but is not limited to, data corresponding to test results, and the like.
In some embodiments, the trace detecting 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 will appreciate that the configuration shown in fig. 11 does not constitute a limitation of the trace detection arrangement of a printed circuit board and may include more or fewer components than those shown, such as the sensor 117.
The functions of the functional modules of the trace detection device of the 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 may refer to the related description of the above method embodiment, which is not described herein again.
Therefore, the embodiment of the invention solves the problems that the manual detection of whether the differential wire wiring rule meets the requirement in the prior art is time-consuming, labor-consuming and easy to make mistakes, and effectively improves the detection efficiency and the detection accuracy of differential wire routing in the PCB.
It is understood that, if the trace detection method of the printed circuit board in the above embodiments is implemented in the form of a software functional unit and sold or used as a stand-alone product, it may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be substantially or partially implemented in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods of the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), an electrically erasable programmable ROM, a register, a hard disk, a removable magnetic disk, a CD-ROM, a magnetic or optical disk, and other various media capable of storing program codes.
Based on this, an embodiment of the present invention further provides a computer-readable storage medium, in which a trace detection program of a printed circuit board is stored, and the steps of the trace detection method of the printed circuit board according to any one of the above embodiments are executed by a processor.
The functions of the functional modules of the computer-readable storage medium according to the embodiment of the present invention may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the related description of the foregoing method embodiment, which is not described herein again.
Therefore, the embodiment of the invention solves the problems that the manual detection of whether the differential wire wiring rule meets the requirement in the prior art is time-consuming, labor-consuming and easy to make mistakes, and effectively improves the detection efficiency and the detection accuracy of differential wire routing in the PCB.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The method, the device and the computer readable storage medium for detecting the trace of the printed circuit board provided by the present application are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A method for detecting the routing of a printed circuit board is characterized by comprising the following steps:
acquiring a differential signal, and segmenting and extracting all differential pair winding line segments in a differential signal line;
determining a target line segment group located at a convex position based on the position information of each line segment in the differential pair winding line segments; the target line segment group comprises a plurality of groups of target line segment groups, and each group of target line segment groups only corresponds to one bulge position;
for each group of target line segment groups, determining a corresponding first target line segment according to position information of a preset position on a parallel line segment in the current target line segment group, and determining a second target line segment which is the same differential pair with the first target line segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to serve as the winding parameter value of the target routing corresponding to the current target segment group; and judging whether the target wiring meets a preset wiring rule or not based on the winding parameter value and the winding parameter standard value.
2. The method for detecting traces on a printed circuit board according to claim 1, wherein the obtaining differential signals and the dividing and extracting all differential pair wire segments of the differential signal lines comprises:
According to the attribute setting request, performing target line segment display attribute setting on the obtained differential signal to display a differential pair winding line segment in the differential signal line;
and segmenting and extracting all the differential pair winding line segments in the differential signal line based on the father class corresponding to each line segment in the differential pair winding line segments.
3. The method for detecting traces on a printed circuit board according to claim 2, wherein the performing, according to the attribute setting request, the target segment display attribute setting on the obtained differential signal to display the differential pair wire segments in the differential signal wires comprises:
acquiring all differential signals of a server mainboard to be detected;
when an attribute setting request is received, automatically adding a Diff _ Unclosed _ Length attribute to the differential signal, and simultaneously setting a parameter value of the Diff _ Unclosed _ Length attribute as a first preset width value;
and when the differential signal attribute is detected to be set, displaying a differential pair winding line segment in the differential signal line, wherein the line width value of the differential pair winding line segment is the first preset width value.
4. The method for detecting traces on 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 trace segment in the current target trace segment group includes:
When a filter parameter setting request is received, automatically setting the filter to be in a clineseg mode so as to select a target route segment at a corresponding level;
acquiring the coordinate information of the midpoint position of the parallel line segments in the current target line segment group;
and calling the filter to select a first target route segment corresponding to the current target route segment group from the current layer based on the midpoint position coordinate information.
5. The method for detecting traces on a printed circuit board according to any one of claims 1 to 4, wherein the determining the target segment group located at the protruding position based on the position information of each segment in the differential pair routing segments includes:
acquiring the starting point coordinates and the end point coordinates of each line segment in the differential pair winding line segments;
determining target line segment groups located at the same convex position based on the start point coordinates and the end point coordinates of all line segments in the differential pair winding line segments, wherein all the target line segment groups form a target line segment group; the target line segment group comprises a first oblique line segment, a parallel line segment and a second oblique line segment, wherein the coordinate of the end point of the first oblique line segment is the same as the coordinate of the start point of the parallel line segment, and the coordinate of the start point of the second oblique line segment is the same as the coordinate of the end point of the parallel line segment;
And storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment record table, wherein the unique identification information and the coordinate information of each line segment have a corresponding relation.
6. The method for detecting traces on a printed circuit board according to claim 4, wherein the storing the unique identification information and the coordinate information of each line segment in each target line segment group in a pre-created line segment record table includes:
dividing each target line segment group according to the parent class to which each line segment belongs;
and storing the target line segment group belonging to the same parent class in the same row of the line segment record table.
7. The method for detecting traces on a printed circuit board according to claim 6, wherein the calculating the length of the first target trace segment and the vertical distance between the first target trace segment and the second target trace segment includes:
acquiring position coordinate information of the first target route segment and the second target route segment;
calculating to obtain a length value of the first target route segment according to the coordinate values of the starting point and the ending point of the first target route segment;
and calculating to obtain a vertical distance value between the first target route segment and the second target route segment according to the coordinate value of the midpoint position of the first target route segment and the coordinate value of the midpoint position of the second target route segment.
8. The utility model provides a line detection device is walked to printed circuit board which characterized in that includes:
the signal acquisition module is used for acquiring a differential signal;
the line segment extraction module is used for segmenting and extracting all differential pair winding line segments in the differential signal line;
the projection line segment positioning module is used for determining a target line segment group positioned at a projection position based on the position information of each line segment in the differential pair winding line segments; the target line segment group comprises a plurality of groups of target line segment groups, and each group of target line segment groups only corresponds to one bulge position;
the winding detection module is used for determining a corresponding first target route segment according to position information of a preset position on a parallel line segment in the current target line segment group and determining a second target route segment which is the same differential pair with the first target route segment; calculating the length value of the first target routing segment and the vertical distance between the first target routing segment and the second target routing segment to serve as the winding parameter value of the target routing corresponding to the current target segment group; and judging whether the target wiring meets a preset wiring rule or not based on the winding parameter value and the winding parameter standard value.
9. A trace detection device for a printed circuit board, comprising a processor, wherein the processor is configured to implement the steps of the trace detection method for the printed circuit board according to any one of claims 1 to 7 when executing a computer program stored in a memory.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores thereon a trace detection program of a printed circuit board, and the trace detection program of the printed circuit board, when executed by a processor, implements the steps of the trace detection method of the printed circuit board according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010606040.6A CN111859847A (en) | 2020-06-29 | 2020-06-29 | Method and device for detecting routing of printed circuit board and computer readable storage medium |
| PCT/CN2021/076935 WO2022001132A1 (en) | 2020-06-29 | 2021-02-19 | Routing inspection method and apparatus for printed circuit board, and computer-readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010606040.6A CN111859847A (en) | 2020-06-29 | 2020-06-29 | Method and device for detecting routing of printed circuit board and computer readable storage medium |
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| CN111859847A true CN111859847A (en) | 2020-10-30 |
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| CN202010606040.6A Pending CN111859847A (en) | 2020-06-29 | 2020-06-29 | Method and device for detecting routing of printed circuit board and computer readable storage medium |
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| CN (1) | CN111859847A (en) |
| WO (1) | WO2022001132A1 (en) |
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| WO2022001132A1 (en) * | 2020-06-29 | 2022-01-06 | 苏州浪潮智能科技有限公司 | Routing inspection method and apparatus for printed circuit board, and computer-readable storage medium |
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