CN113642281B - Method, device, equipment and medium for detecting PCB design diagram - Google Patents
Method, device, equipment and medium for detecting PCB design diagram Download PDFInfo
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- CN113642281B CN113642281B CN202010345382.7A CN202010345382A CN113642281B CN 113642281 B CN113642281 B CN 113642281B CN 202010345382 A CN202010345382 A CN 202010345382A CN 113642281 B CN113642281 B CN 113642281B
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000010586 diagram Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 70
- 238000004806 packaging method and process Methods 0.000 claims abstract description 54
- 238000007650 screen-printing Methods 0.000 claims description 29
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/392—Floor-planning or layout, e.g. partitioning or placement
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The embodiment of the invention discloses a method, a device, equipment and a medium for detecting a PCB design drawing. The method comprises the following steps: determining a target object area and a limiting area in a PCB design drawing; constructing a target circumscribed frame of a target object area and a limit circumscribed frame of a limit area; performing frame intersection detection on the target external frame and the limiting external frame to determine whether the two external frames intersect; and determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result. By adopting the scheme, whether the position design error occurs in the device packaging area or the silk-screen area in the PCB design drawing can be automatically identified by means of the intersecting result between the constructed external graphics, so that the detection efficiency of the PCB design drawing is improved; and because the intersection between the external graphics is detected, the target object area which does not meet the requirements can be screened to the greatest extent, and the detection accuracy of the PCB design drawing is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of computers, in particular to a method, a device, equipment and a medium for detecting a PCB design drawing.
Background
A PCB (Printed Circuit Board ) is an important electronic component, and is a carrier for electrical connection of various electronic components, and is used in almost all electronic devices.
Currently, because of production processing limitations, structural limitations, and PCB related design requirements, placement of devices is prohibited in some areas, or intersection of two specific areas is prohibited, for example, whether a device enters a tooling area is determined, whether a screen printing enters a bright copper area is determined, and the like. However, these are all required to be manually operated for visual inspection, so that the detection efficiency is low and the omission problem is generated.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a medium for detecting a PCB design drawing, so as to realize high-efficiency detection of whether the layout of a component packaging area and a silk-screen area in the PCB design drawing is reasonable.
In a first aspect, an embodiment of the present invention provides a method for detecting a PCB design, including:
determining a target object area and a limiting area in a PCB design drawing;
constructing a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area;
performing frame intersection detection on the target external frame and the limiting external frame to determine whether the two external frames intersect;
And determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
In a second aspect, an embodiment of the present invention further provides a device for detecting a PCB design, including:
a layout area determining module for determining target object area and limiting area in PCB design diagram
The circumscribed graph construction module is used for constructing a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area;
the external graphic detection module is used for carrying out frame intersection detection on the target external frame and the limiting external frame and determining whether the two external frames are intersected or not;
and the PCB design diagram detection module is used for determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
In a third aspect, an embodiment of the present invention further provides an electronic device, including:
one or more processing devices;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processing devices, the one or more processing devices implement the method for detecting a PCB design according to any one of the embodiments of the present invention.
In a fourth aspect, in an embodiment of the present invention, there is further provided a computer readable medium having a computer program stored thereon, where the program when executed by a processing device implements a method for detecting a PCB design according to any one of the embodiments of the present invention.
The embodiment of the invention provides a detection method of a PCB design drawing, which is characterized in that a target external border and a limiting external border of a target object area and a limiting area in the PCB design drawing are respectively constructed, whether the target object area enters the limiting area is determined by detecting the intersection result of the target external border and the limiting external border, and whether the design position of the target object area in the PCB design drawing is illegal is further determined according to the intersection detection result. By adopting the scheme, whether the layout of the component packaging area or the silk-screen area in the PCB design drawing is wrong or not can be automatically identified by means of the intersecting result between the constructed external graphics, and the detection efficiency of the PCB design drawing is improved; and because the intersection between the external graphics is detected, the target object area which does not meet the requirements can be screened to the greatest extent, and the detection accuracy of the PCB design drawing is improved.
The foregoing summary is merely an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more fully understood, and in order that the same or additional objects, features and advantages of the present invention may be more fully understood.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a flowchart of a method for detecting a PCB design provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial design of a target object area and a limiting area in a PCB design according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an external frame of a component packaging area and a character screen printing area provided in an embodiment of the invention;
FIG. 4 is a flow chart of another method for detecting a PCB design provided in an embodiment of the invention;
FIG. 5 is a schematic diagram illustrating an intersection detection between circumscribed frames according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating another exemplary detection of intersections between bounding boxes according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of detecting intersections between circumscribed frames according to an embodiment of the present invention;
fig. 8 is a block diagram of a detecting device for a PCB design according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations (or steps) can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
For better understanding of the present application solution and the implementation effect of the present application solution, the following description will simply explain related contents of the PCB design drawing. The method specifically comprises the following steps: when designing the PCB design diagram, the component packaging area for representing the placement position of each component, such as the packaging area of the components including resistor, capacitor, power supply, chip and the like, can be designed in the PCB design diagram; the periphery of each component packaging area in the PCB design drawing is designed with a packaging screen printing area for representing the range of the component packaging area so as to distinguish the position range of each component packaging area; and, the character silk screen printing area for representing the label of each component packaging area can be designed near each component packaging area in the PCB design drawing to distinguish the packaging areas of different components.
In consideration of the production processing and structural limitation of the PCB, in the PCB design diagram, components are prohibited from being placed in some areas or two specific areas are prohibited from overlapping. For example, if the component packaging area enters the tooling area, the subsequent component insertion is affected; if the silk-screen printing area enters the bright copper area, the flatness of the PCB is affected; if the height of the components exceeds the limit of the placement area, the installation of structural components on the PCB in the later stage can be influenced. For this reason, it is necessary to check the PCB design to avoid the above design problem.
Fig. 1 is a flowchart of a method for detecting a PCB design according to an embodiment of the present invention. The embodiment can be applied to the situation of detecting the layout position of a partial area in the PCB design drawing, in particular to the situation of reasonably detecting the layout positions of a component packaging area and a silk-screen area in the PCB design drawing. The method can be performed by a detection device of a PCB design drawing, and the device can be realized in a software and/or hardware mode and integrated on any electronic equipment with a network communication function. The electronic device may be a computer device or a server, etc. As shown in fig. 1, the method for detecting a PCB design provided in this embodiment may include the following steps S110 to S140:
s110, determining a target object area and a limiting area in the PCB design drawing.
In this embodiment, the target object includes: component packaging and/or silk screen printing arranged in the PCB design drawing; the restricted area includes at least one of: and a forbidden cloth area, a height limiting area, a tooling area, a bright copper area and a component packaging area which are arranged in the PCB design diagram. Alternatively, the target object area included in the PCB design may be determined according to the detection requirements of the PCB design. For example, a target object to be detected is determined from the PCB design drawing, and the target object is taken as a target object area in the area occupied by the PCB design drawing. Meanwhile, the limiting area included in the PCB design drawing can be determined by presetting the limiting area in the PCB design drawing according to the limiting requirement of the PCB design drawing. The target object is mapped onto the PCB design and the area occupied in the PCB design is denoted as the target object area. Wherein a target object can construct a target object area, and the target object area is determined by the area occupied by the target object in the PCB design drawing.
For example, one or more component packages and/or silkscreen to be detected for rationality of layout position may be selected from the component packages and/or silkscreen included in the PCB design as the target object, and the target object may be the target object area in the area occupied by the PCB design, so as to detect the target object. Meanwhile, when the layout design of the PCB design drawing is carried out, a limiting area can be marked in the PCB design drawing in advance according to limiting requirements; for example, the restricted area in the PCB design may include: the device comprises a forbidden cloth area, a height limiting area, a tooling area, a bright copper area and the like. Alternatively, if it is necessary to detect whether or not the two component packages overlap, the component package region of the other component may also be used as the restriction region. Still alternatively, if the problem that the silk-screen region enters the component packaging region needs to be considered, for example, after the silk-screen region enters the component packaging region, the component mounted on the PCB board at a later stage can shield the silk-screen at the bottom, and the component packaging region can be used as the limiting region. The specific limiting areas in the PCB design may be set according to the type of the target object.
In an alternative example, where the target object is a component package on a PCB design, the target object area is the area that the component package occupies in the PCB design. In turn, the restricted area in the PCB design may include at least one of: a forbidden region, a height limiting region, a tooling region and a bright copper region in the PCB design drawing. In another alternative example, when the target object is a component package, the target object area is an area occupied by the target object in the PCB design drawing. In contrast, the limited area in the PCB design may be the area occupied by another component package in the PCB design. Alternatively, considering that the component package region is not generally in contact with the bright copper region when the PCB design is actually laid out, the limited region in the PCB design may not include the bright copper region provided that "component package" is targeted.
In yet another alternative example, where the target object is a silk screen on a PCB design, the target object area is the area that the silk screen occupies in the PCB design. In turn, the restricted area in the PCB design may include at least one of: a forbidden cloth area, a height limiting area, a bright copper area, a tooling area and a component packaging area in the PCB design drawing. The silk-screen area can be an area occupied by silk-screen characters in the PCB design drawing, for example, silk-screen characters are used for representing silk-screen of the component packaging area labels; the silk-screened area may also be a silk-screened wire, for example, the silk-screened wire may be a silk-screened wire used to circumscribe the location range of the component packaging area. Alternatively, considering that the thickness of the screen printing in the PCB design is extremely thin, even if the limited height area in the PCB design is entered, the limited area in the PCB design may not include the limited height area provided that "screen printing" is taken as the target object. Alternatively, after the components are attached to the circuit board of the PCB design, the tooling is removed, and the tooling is displayed at the back even if the screen printing is blocked, so that if the screen printing is used as the target object, the limiting area in the PCB design may not include the tooling area.
Fig. 2 is a schematic diagram illustrating a partial design of a target object area and a limiting area in a PCB design according to an embodiment of the present invention. Referring to fig. 2, the target object may be: the PCB design drawing comprises 'resistor' component packaging, packaging silk screen printing or character silk screen printing, and the target object area can be an area occupied by the target object in the PCB design drawing; for example, the target object region may be: the resistor element packaging area, the packaging silk-screen area or the character silk-screen area. The limiting area in the PCB design may be: and a forbidden area in the PCB design drawing. As can be seen from FIG. 2, the "resistor" device package region, the package screen printing region, and the "P1" character screen printing region all enter the forbidden region. Therefore, the PCB cannot be processed because the component packaging area enters the forbidden cloth area; and, because the packaging silk-screen area and the P1 character silk-screen area enter the forbidden cloth area, the flatness of the PCB board can be affected, so that the design of the PCB design diagram is not in accordance with the requirements.
S120, constructing a target circumscribed frame of a target object area and a limit circumscribed frame of a limit area in the PCB design drawing.
In this embodiment, in order to detect whether the layout position of the target object area in the PCB design drawing is reasonable and fast, the scheme introduces the idea of converting the target object area, and converts the target object area and the limiting area in the PCB design drawing into regular or irregular circumscribed graphics surrounding the target object area or the limiting area, where the circumscribed borders are respectively a target circumscribed border constructed for the target object area and a limiting circumscribed border constructed for the limiting area. Therefore, when determining whether the target object area enters the limiting area, the cross detection process is converted from the cross detection process between the inter-area overlapping detection process and the cross detection process between the external graphics of the external graphics, and whether the target object area enters the limiting area can be determined only by determining whether the external graphics of the two areas are crossed.
Exemplary, fig. 3 is a schematic diagram of an external frame of a component packaging area and a character screen printing area provided in an embodiment of the invention. Referring to fig. 3, components, copper foil, characters and the like on the PCB board can be converted into an irregular external frame pattern according to the maximum value of the respective projection ranges, and accordingly, a regular or irregular external frame pattern can be constructed on the periphery of a component packaging area, a screen printing area, a similar forbidden area and other limiting areas included in the PCB design drawing.
In an alternative manner of this embodiment, constructing the target circumscribing frame of the target object area and the limiting circumscribing frame of the limiting area in the PCB design drawing may include steps A1-A2:
a1, determining target area position information of a target object area in a PCB design drawing; and constructing an circumscribed frame surrounding the target object area according to the target area position information, and determining the circumscribed frame as the target circumscribed frame.
In this embodiment, when the PCB design is manufactured, the device packaging areas and the screen printing areas are recorded according to packaging of the devices and screen printing of the devices, and the area position information of the device packaging areas and the screen printing areas in the PCB design is stored in real time according to certain parameter information. When the target circumscribed frame of the target object area in the PCB design drawing needs to be constructed, the position information of the target object area in the PCB design drawing can be determined directly from the parameter information of the recorded target object. The target area position information may include position point information for describing a position of a contour boundary of the target object area in the PCB design drawing.
In this embodiment, after determining the position points for characterizing the contour boundary of the target object area and the coordinate information of the position points, an circumscribing frame surrounding the target object area may be constructed outside the target object area according to the position points, and at least part of the constructed circumscribing frame may be tangent to at least part of the outer boundary line of the target object area. For example, taking the component packaging area or the character screen printing area shown in fig. 3 as an example, the leftmost position point, the rightmost position point, the uppermost position point and the bottommost position point of the component packaging area or the character screen printing area can be found, so that a rectangular external frame can be constructed outside the component packaging area or the character screen printing area according to the four position points. Of course, the built target circumscribing frame can be a regular polygon or an irregular polygon.
A2, determining the position information of the limiting area in the PCB design drawing; and constructing an external frame surrounding the limiting area according to the limiting area position information, and determining the external frame as the limiting external frame.
In this embodiment, when the PCB design is manufactured, the region position information of each restriction region in the PCB design is recorded according to the layout setting of each restriction region, and the region position information is stored in real time according to certain parameter information. Similar to the construction process of the target circumscribing frame of the target object area, the position point information for describing the position of the outline border of the limiting area in the PCB design drawing can be searched and recorded as the limiting area position information. And then, constructing an external border surrounding the limiting area according to the obtained position points of the limiting areas, and enabling at least part of the constructed external border to be tangent with the boundary line outside at least part of the limiting area.
In this embodiment, the target circumscribing frame and the limiting circumscribing frame are closed polygons. In the PCB design drawing, the sizes and the shapes of all the target object areas are different, so that different polygons or identical polygons can be formed between the built external frames of all the targets. Meanwhile, in the PCB design, the sizes and shapes of the limiting areas are different, so that the built limiting external frames may be identical or different irregular polygons, which will be described in detail later.
S130, detecting frame intersection of the target external frame and the limiting external frame, and determining whether the two external frames intersect.
In this embodiment, after the target circumscribed frame of the target object area and the limit circumscribed frame of the limit area are constructed, whether the two circumscribed frames intersect can be detected. Optionally, whether the target external frame and the limiting external frame intersect can be detected according to position point information included on the target external frame and position points included on the limiting external frame.
In this embodiment, optionally, because the number of the target object areas like the component packaging area and the screen printing area in the PCB design is relatively large, when the circumscribed border of the target object area is constructed, a rectangular circumscribed border or a circumscribed border similar to the outline of the target object area can be constructed on the periphery of the target object area, so that the rectangular circumscribed border or the circumscribed border is used as the target circumscribed border of the target object area. The method has the advantages that when the external border of the target is constructed, the construction calculation amount of the external border cannot be greatly increased due to the fact that the number of the target object areas is too large, meanwhile, the external border can be constructed to ensure that the external border cannot be excessively large and deviate from the target object areas, and under the condition that the target object areas are not intersected with the limiting areas, the fact that the target external border is intersected with the limiting external border of the limiting areas is possibly detected, and detection errors are extremely easy to occur.
In an alternative example, for the circumscribed frame approximating the outline of the target object area (or the rectangular circumscribed frame), the graph does not need to be consistent with the outline of the target object area when in construction, and only the area ratio between the target object area and the circumscribed frame approximating the outline of the target object area (or the rectangular circumscribed frame) is required to be ensured to be within a preset threshold. The method has the advantages that the target circumscribing frame of the constructed target object area can be prevented from being too large, and if the target circumscribing frame is too large, the target object area does not actually need to intersect with the limiting area when the circumscribing frame intersects with the circumscribing frame of the limiting area, so that the target object area and the limiting area can be overlapped to a certain extent due to erroneous judgment; meanwhile, the target circumscribing frame of the constructed target object region can be ensured not to be too small, and if the constructed target circumscribing frame is too small, for example, the region outline of the constructed target circumscribing frame and the region outline of the target object region are kept consistent, then the construction process of the target circumscribing frame is very complicated due to the fact that the target object region is an irregular region, so that the construction calculation amount is increased.
In this embodiment, optionally, for the component package in the PCB design drawing, the area occupied by the component package in the PCB design drawing is generally a relatively regular area, so when the component package is taken as the target object, the outline and the size of the target circumscribing frame of the constructed target object area may be consistent with the area outline and the size of the target object area. Optionally, for silk-screen printing in the PCB design drawing, the area occupied by the silk-screen printing in the PCB design drawing is usually an irregular area, for example, a silk-screen symbol "2" or the like, so when the silk-screen printing is taken as a target object, the shape and size of the target circumscribing frame of the constructed target object area can be inconsistent with the shape and size of the area of the target object area, as long as a rectangular circumscribing frame or a circumscribing frame similar to the outline of the target object area is constructed on the periphery of the target object area.
In this embodiment, optionally, the component packaging region is not used as a limiting region, but a forbidden region, a height limiting region, a tooling region and a bright copper region in the PCB design drawing are used as limiting regions. In this case, since the number of the limiting regions is relatively small, when the circumscribed frame of the limiting region is constructed, the circumscribed frame which is consistent with the outline of the limiting region can be constructed as the circumscribed frame of the limiting region. The method has the advantages that the shape of the constructed circumscribed frame is closer to the area outline of the limiting area, and the limiting area is more equal to the limiting circumscribed frame, so that when the frame intersection detection is carried out, the target circumscribed frame and the limiting area can be directly considered to be in intersection detection; the number of the limiting areas is small, so that the construction calculation amount of the outer frame is not greatly increased when the limiting external frame which is identical to the outline of the limiting area is constructed, and the number of the target object areas is larger than that of the limiting areas.
And S140, determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
In this embodiment, if it is determined that the two external frames intersect, it is determined that the target object area overlaps the limiting area in the PCB design drawing, and at this time, if the PCB is produced according to the current PCB design drawing, the target object will be soldered in the limiting area in the actual PCB, thereby causing a problem, so that it is required to determine that the design position of the target object area on the PCB design drawing does not meet the setting requirement, and at the same time, an alarm may be issued. If the two external frames are determined to be disjoint, the target object area is determined not to overlap with the limiting area in the PCB design drawing, and the overlapping problem does not occur in the actually generated PCB circuit board, so that the design of the target object area on the PCB design drawing is determined to meet the setting requirement.
In this embodiment, optionally, highlighting or other prompting manners may be adopted on the PCB design drawing to mark the target object area that does not meet the requirements. Alternatively, basic information of an undesirable target object area may be displayed in a list form at a preset position of the PCB design drawing, and the target object area may be highlighted on the PCB design drawing when the basic information of the target object area is clicked. Therefore, the target object area with problems can be positioned in time, modification is convenient, and the modification time of the PCB design diagram is saved.
The embodiment of the invention provides a detection method of a PCB design drawing, which is characterized in that a target external border and a limiting external border are respectively constructed aiming at a target object area and a limiting area in the PCB design drawing, whether the target object area enters the limiting area for layout is determined by detecting the intersection of the target external border and the limiting external border, and whether the design position of the target object area in the PCB design drawing is reasonable is determined according to an intersection detection result. By adopting the scheme, whether the position design errors occur in the layout of the device packaging area or the screen printing area in the PCB design drawing can be automatically identified by means of the intersecting result between the constructed external frame patterns, so that the detection efficiency of the PCB design drawing is improved; in addition, as the intersection between the external graphics is detected, the target object area which does not meet the requirements can be screened to the greatest extent, and the detection accuracy of the PCB design drawing is improved; moreover, by efficiently and accurately detecting, omission of an unsatisfactory target object area during detection can be avoided, production reworking caused by omission is avoided, and further the increase of production cost is approximately avoided.
Fig. 4 is a flowchart of another method for detecting a PCB design provided in an embodiment of the present invention, which is further optimized based on the above embodiment, and may be combined with each of the alternatives in one or more embodiments. As shown in fig. 4, the method for detecting a PCB design provided in this embodiment may include the following steps S410 to S440:
S410, determining a target object area and a limiting area in the PCB design drawing.
S420, constructing a target circumscribed frame of a target object area and a limit circumscribed frame of a limit area in the PCB design drawing.
S430, determining target frame position points associated with the target external frames, and determining target straight lines associated with the target frame position points; the target straight line comprises a straight line passing through a preset direction of the target frame position point.
In this embodiment, the target frame position point associated with the target circumscribed frame may be a point on a frame line segment of the target circumscribed frame. For example, the target bounding box may be a dashed bounding box composed of a set of multiple target box location points; or, the frame line segment on the external frame of the target is associated with a plurality of target frame position points. When the circumscribed frame of the target object area is constructed, the target frame position point related to the target circumscribed frame can be recorded. Optionally, the target external frame and the limiting external frame may be respectively embodied in the form of a set of position points with a connection sequence, and each position point is sequentially connected, so as to obtain a closed external frame.
In this embodiment, after each target frame position point associated with the target external frame is determined, a straight line in a preset direction may be made through the target frame position point, for example, a horizontal straight line or a vertical straight line passing through the target frame position point and parallel to a preset marker in the PCB design drawing, or a straight line in any direction may be constructed. Further, whether an intersection point exists between a target straight line passing through the target frame position point in a preset direction and a frame line segment limiting the circumscribed frame is detected. If the intersection points are detected to exist, continuing to judge the number of the intersection points positioned at the two sides of the position point of the target frame; if no intersection point is detected, returning to continuously detect whether the next target straight line passing through the next target border position point in the preset direction has the intersection point with the border line segment limiting the circumscribed border or not until all the target border position points are traversed and the intersection point detection is carried out.
It should be noted that, here, it is determined whether the target straight line has an intersection with a border line segment limiting the circumscribed border, and whether the target straight line has an intersection with the "border line segment" is detected here instead of whether the target straight line has an intersection with the straight line where the "border line segment" is located.
S440, if it is determined that the intersection point exists between the target straight line associated with the target frame position point and the frame line segment of the limiting circumscribed frame, determining whether the target circumscribed frame is intersected with the limiting circumscribed frame according to the number of the intersection points located on two sides of the target frame position point.
In an optional manner of this embodiment, determining whether the target external frame intersects the limiting external frame according to the number of intersection points located at two sides of the target frame position point may include:
and if the number of the intersection points positioned at the two sides of the position point of the target frame is odd, determining that the target circumscribed frame intersects with the limiting circumscribed frame.
In this embodiment, when it is determined that the intersection point exists between the target straight line associated with the position point of any target frame and the frame line segment of the limiting external frame, if the number of intersection points located at both sides of the position point of the target frame is odd, it indicates that the position point of the target frame is located within the polygon of the limiting external frame, and at this time, it may be determined that the target external frame intersects with the limiting external frame. In addition, under the condition that the intersection points of the target straight line associated with any target frame position point and the frame line segment of the limiting external frame are determined, if the number of the intersection points positioned on two sides of the target frame position point is even, the target external frame is determined to be disjoint with the limiting external frame.
Fig. 5 is a schematic diagram illustrating an intersection detection between circumscribed frames according to an embodiment of the present invention. Referring to fig. 5, in a pcb design, it includes: the first component packaging area, the second component packaging area and the forbidden cloth area. The first component packaging area in the upper right corner of fig. 5 is inside the forbidden cloth area, 4 intersection points exist between a horizontal line drawn through a target frame position point on a target external frame of the first component packaging area and a frame line segment on a limit external frame of the forbidden cloth area, wherein 3 intersection points exist on the left side of the target frame position point, 1 intersection point exists on the right side of the target frame position point, and the number of intersection points positioned on two sides of the target frame position point is an odd number. At this time, it can be known that the first component packaging region enters the forbidden region. Similarly, the target external border of the second component packaging area in the lower left corner of fig. 5 is outside the figure of the limiting external border of the forbidden coverage area, and 4 intersection points are formed between the horizontal line constructed through the target border position point on the target external border of the second component packaging area and the limiting external border, wherein 2 intersection points are on the left side, 2 intersection points are on the right side, and are even numbers as expected.
Fig. 6 is a schematic diagram illustrating another exemplary detection of intersections between circumscribed frames according to an embodiment of the present invention. Referring to fig. 6, fig. 6 shows the polygon selfing situation, when it is determined that there are intersections between the target straight line and the circumscribed frame of the limiting area, it can be seen that 2 intersections are left of the target frame position point associated with the target circumscribed frame of the component packaging area shown in fig. 6, and 2 intersections are also right and even, where the component is not in the graph. FIG. 7 is a schematic diagram of detecting intersections between circumscribed frames according to an embodiment of the present invention. Referring to fig. 7, the polygons do not overlap, but two sides intersect, in which case the decision can still be made using the scheme of the present application.
In an optional manner of this embodiment, the detecting the frame intersection of the target external frame and the limiting external frame may further include:
if all the target border position points associated with the target object area are traversed, determining that the intersection points of the target straight lines associated with the target border position points and the border line segments of the limiting circumscribed border do not exist, and determining that the target circumscribed border is not intersected with the limiting circumscribed border.
S450, determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result between the target external frame and the limiting external frame.
On the basis of the above embodiment, optionally, after the frame intersection detection is performed on the target external frame and the limited external frame, the method further includes the following steps:
detecting whether the additional attribute information of the target object region matches the additional attribute information of the limiting region; wherein the additional attribute information includes height information.
In this embodiment, under the condition that the frame intersection detection result is determined, if the height of the additional attribute information of the target object area is detected to be greater than the height in the additional attribute information of the limiting area, it is indicated that the height of the target object area exceeds the height limited by the design requirement, the height of the target object area does not meet the layout design requirement of the PCB design drawing, and an alarm is added; otherwise, the height of the target object area is not more than the height limited by the design requirement, and the height meets the layout design requirement of the PCB design drawing.
The embodiment of the invention provides a detection method of a PCB design drawing, which is characterized in that a target external border and a limiting external border are respectively constructed aiming at a target object area and a limiting area in the PCB design drawing, a straight line in a preset direction is made through a position point on the target external border, whether the straight line intersects with a border line segment on the limiting external border or not is judged to determine whether the target object area enters the limiting area or not, and whether the design position of the target object area in the PCB design drawing is illegal or not is further determined according to an intersecting detection result. By adopting the scheme, whether the position design error occurs in the device packaging area or the silk-screen area in the PCB design drawing can be automatically identified by means of the intersecting result between the constructed external graphics, so that the detection efficiency of the PCB design drawing is improved; and because the intersection between the external graphics is detected, the target object area which does not meet the requirements can be screened to the greatest extent.
Fig. 8 is a block diagram of a detection device for a PCB design according to an embodiment of the present invention. The embodiment can be applied to the situation of detecting the layout position of a partial area in the PCB design diagram, in particular to the situation of detecting the layout positions of a component packaging area and a silk-screen area in the PCB design diagram. The apparatus may be implemented in software and/or hardware and integrated on any electronic device having network communication capabilities. As shown in fig. 8, the detection device for a PCB design provided in this embodiment may include: layout area determination module 810, circumscribing graphic construction module 820, circumscribing graphic detection module 830, and PCB design drawing detection module 840. Wherein:
A layout area determining module 810 for determining a target object area and a constraint area in the PCB design drawing;
an circumscribed graphics building module 820 for building a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area in the PCB design drawing;
the external graphics detection module 830 is configured to perform frame intersection detection on the target external frame and the limited external frame, and determine whether the two external frames intersect;
the PCB design diagram detection module 840 is configured to determine, according to a frame intersection detection result, whether a design position of the target object area in the PCB design diagram meets a design requirement.
On the basis of the above embodiment, optionally, the target object includes: component packaging and/or silk screen printing arranged in the PCB design drawing; the confinement region includes at least one of: and a forbidden cloth area, a height limiting area, a tooling area, a bright copper area and a component packaging area which are arranged in the PCB design diagram.
Based on the above embodiment, the external graphics building module 820 optionally includes:
determining target area position information of a target object area in the PCB design drawing; constructing an external frame surrounding the target object area according to the position information of the target area, and determining the external frame as a target external frame;
Determining the position information of a limiting area in the PCB design drawing; and constructing an circumscribed frame surrounding the limiting area according to the limiting area position information, and determining the circumscribed frame as the limiting circumscribed frame.
Optionally, the external graphics detection module 830 includes:
determining target frame position points associated with the target external frames, and determining target straight lines associated with the target frame position points; the target straight line comprises a straight line passing through the target frame position point in a preset direction;
if it is determined that the intersection point exists between the target straight line associated with the target position point and the border line segment of the limiting external border, determining whether the target external border intersects with the limiting external border according to the number of the intersection points positioned on two sides of the target border position point.
Based on the above embodiment, optionally, the external graphics detection module 820 is specifically configured to:
if the number of the intersection points positioned at the two sides of the position point of the target frame is odd, determining that the target external frame intersects with the limiting external frame;
and if the number of the intersection points positioned at the two sides of the position point of the target frame is even, determining that the target external frame is not intersected with the limiting external frame.
Optionally, the external graphics detection module 830 further includes:
and if the fact that the target straight lines associated with the target border position points are not intersected with the border line segments of the limiting external border is determined, determining that the target external border is not intersected with the limiting external border.
Optionally, based on the above embodiment, the PCB design detection module 840 includes:
if the two circumscribed frames are intersected, the target object area is determined to be overlapped with the limiting area in the PCB design drawing, and the design position of the target object area is determined to be not in accordance with the setting requirement;
if the two circumscribed frames are determined to be disjoint, the target object area is determined to be not overlapped with the limiting area in the PCB design drawing, and the design position of the target object area is determined to meet the setting requirement.
On the basis of the above embodiment, optionally, the apparatus further includes:
an additional attribute detection module 850, configured to detect, after performing a border intersection detection on the target circumscribed border and the limit circumscribed border, whether additional attribute information of the target object area matches additional attribute information of the limit area if a border intersection detection result is determined; wherein the additional attribute information includes altitude information.
The device for detecting the PCB design provided by the embodiment of the invention can execute the method for detecting the PCB design provided by any embodiment of the invention, has the corresponding functions and beneficial effects of executing the method for detecting the PCB design, and the detailed process refers to the related operation of the method for detecting the PCB design in the embodiment.
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. As shown in fig. 9, an electronic device provided in an embodiment of the present invention includes: one or more processors 910 and storage 920; the number of processors 910 in the electronic device may be one or more, one processor 910 being illustrated in fig. 9; storage 920 is used to store one or more programs; the one or more programs are executed by the one or more processors 910 to cause the one or more processors 910 to implement a method of detecting a PCB design according to any of the embodiments of the present invention.
The electronic device may further include: an input device 930, and an output device 940.
The processor 910, the storage 920, the input 930, and the output 940 in the electronic device may be connected by a bus or other means, for example in fig. 9.
The storage device 920 in the electronic apparatus is used as a computer readable storage medium, and may be used to store one or more programs, which may be software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method for detecting a PCB design provided in the embodiments of the present invention. The processor 910 executes various functional applications of the electronic device and data processing by running software programs, instructions and modules stored in the storage 920, that is, implements the method for detecting a PCB design provided in the above method embodiment.
Storage 920 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the electronic device, etc. In addition, storage 920 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, storage 920 may further include memory remotely located relative to processor 910, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 930 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the electronic device. The output device 940 may include a display device such as a display screen.
And, when one or more programs included in the above-described electronic device are executed by the one or more processors 910, the programs perform the following operations:
determining a target object area and a limiting area in a PCB design drawing;
constructing a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area;
performing frame intersection detection on the target external frame and the limiting external frame to determine whether the two external frames intersect;
and determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
Of course, those skilled in the art will appreciate that the program(s) may also perform related operations in the method of detecting a PCB design provided in any embodiment of the present invention when the program(s) included in the electronic device are executed by the processor(s) 910.
In an embodiment of the present invention, there is provided a computer-readable medium having stored thereon a computer program for executing a method of inspecting a PCB design when executed by a processor, the method including:
Determining a target object area and a limiting area in a PCB design drawing;
constructing a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area;
performing frame intersection detection on the target external frame and the limiting external frame to determine whether the two external frames intersect;
and determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
Optionally, the program may be further used to perform the method for detecting a PCB design provided in any embodiment of the present invention when the program is executed by the processor.
The computer storage media of embodiments of the invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access Memory (Random Access Memory, RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a flash Memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. A computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to: electromagnetic signals, optical signals, or any suitable combination of the preceding. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, radio frequency (RadioFrequency, RF), and the like, or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (11)
1. A method for detecting a PCB design, the method comprising:
determining a target object area and a limiting area in a PCB design drawing;
constructing a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area;
determining target frame position points related to the target external frames, determining target straight lines related to the target frame position points, and performing frame intersection detection on the target external frames and the limiting external frames through the target straight lines to determine whether the two external frames intersect;
and determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
2. The method of claim 1, wherein the target object comprises: component packaging and/or silk screen printing arranged in the PCB design drawing; the confinement region includes at least one of: and a forbidden cloth area, a height limiting area, a tooling area, a bright copper area and a component packaging area which are arranged in the PCB design diagram.
3. The method of claim 1, wherein constructing a target bounding box of the target object region and a bounding box of the bounding region comprises:
Determining target area position information of a target object area in the PCB design drawing; constructing an external frame surrounding the target object area according to the position information of the target area, and determining the external frame as a target external frame;
determining the position information of a limiting area in the PCB design drawing; and constructing an circumscribed frame surrounding the limiting area according to the limiting area position information, and determining the circumscribed frame as the limiting circumscribed frame.
4. The method of claim 1, wherein the target straight line comprises a straight line passing through a preset direction of the target border position point, and the border intersection detection for the target circumscribed border and the limit circumscribed border comprises:
if it is determined that the intersection point exists between the target straight line associated with the target frame position point and the frame line segment of the limiting external frame, determining whether the target external frame and the limiting external frame intersect according to the number of the intersection points positioned on two sides of the target frame position point.
5. The method of claim 4, wherein determining whether the target bounding box intersects the bounding box based on the number of intersection points located on both sides of the target bounding box location point comprises:
If the number of the intersection points positioned at the two sides of the position point of the target frame is odd, determining that the target external frame intersects with the limiting external frame;
and if the number of the intersection points positioned at the two sides of the position point of the target frame is even, determining that the target external frame is not intersected with the limiting external frame.
6. The method of claim 4, wherein detecting the edge intersection of the target bounding edge and the bounding edge further comprises:
and if the fact that the target straight lines associated with the target border position points are not intersected with the border line segments of the limiting external border is determined, determining that the target external border is not intersected with the limiting external border.
7. The method of claim 1, wherein determining whether the design position of the target object area in the PCB design meets design requirements based on the border intersection detection result comprises:
if the two circumscribed frames are intersected, the target object area is determined to be overlapped with the limiting area in the PCB design drawing, and the design position of the target object area is determined to be not in accordance with the setting requirement;
If the two circumscribed frames are determined to be disjoint, the target object area is determined to be not overlapped with the limiting area in the PCB design drawing, and the design position of the target object area is determined to meet the setting requirement.
8. The method of claim 1, further comprising, after detecting the bounding box intersection of the target bounding box and the bounding box:
detecting whether the additional attribute information of the target object area matches the additional attribute information of the limiting area under the condition that the frame intersection detection result is determined; wherein the additional attribute information includes altitude information.
9. A device for inspecting a PCB design, the device comprising:
the layout area determining module is used for determining a target object area and a limiting area in the PCB design drawing;
the circumscribed graph construction module is used for constructing a target circumscribed frame of the target object area and a limit circumscribed frame of the limit area;
the external graphic detection module is used for determining target frame position points related to the target external frames, determining target straight lines related to the target frame position points, and carrying out frame intersection detection on the target external frames and the limiting external frames through the target straight lines so as to determine whether the two external frames intersect;
And the PCB design diagram detection module is used for determining whether the design position of the target object area in the PCB design diagram meets the design requirement according to the frame intersection detection result.
10. An electronic device, comprising:
one or more processing devices;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processing devices, the one or more processing devices are caused to implement the method of detecting a PCB design of any one of claims 1-8.
11. A computer readable medium having stored thereon a computer program, characterized in that the program, when executed by a processing means, implements the method of detecting a PCB design as claimed in any one of claims 1-8.
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| CN108846169A (en) * | 2018-05-25 | 2018-11-20 | 福州大学 | Mixing altimetric cell layout design method based on the constraint of minimum implanted region |
| CN109271676A (en) * | 2018-08-24 | 2019-01-25 | 郑州云海信息技术有限公司 | A kind of detection method and device of zero restricted area of PCB design figure |
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| CN108846169A (en) * | 2018-05-25 | 2018-11-20 | 福州大学 | Mixing altimetric cell layout design method based on the constraint of minimum implanted region |
| CN109271676A (en) * | 2018-08-24 | 2019-01-25 | 郑州云海信息技术有限公司 | A kind of detection method and device of zero restricted area of PCB design figure |
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