WO2015131457A1

WO2015131457A1 - Method and system for automatically auditing pcb project file

Info

Publication number: WO2015131457A1
Application number: PCT/CN2014/079374
Authority: WO
Inventors: 曾波
Original assignee: 深圳市百能信息技术有限公司
Priority date: 2014-03-03
Filing date: 2014-06-06
Publication date: 2015-09-11
Also published as: CN103823882A

Abstract

The present invention relates to a method and system for automatically auditing a PCB project file. The method comprises: receiving a file package submitted by a user, the file package containing a Gerber file and/or a plate-making description file; displaying a pattern of the Gerber file on-line, parsing the Gerber file using a pre-set parameter extraction rule and/or parsing the plate-making description file using a general project parameter description language rule base, so as to acquire a PCB project parameter; and according to the PCB project parameter, generating an SPEC file, and after the parsing results are integrated, outputting and displaying same. By means of the present invention, by comparing the received Gerber file according to the pre-set rule, the PCB project parameter is recognized, so that the system can automatically acquire the PCB project parameter and output same to a user after the PCB project parameter is standardized, and therefore, the manual auditing time of the Gerber file is shortened, the PCB material auditing efficiency is improved, and the auditing process and the auditing result are more intuitive.

Description

Method and system for automatically auditing PCB engineering files

Technical field

The invention relates to the technical field of printed circuit boards, and in particular to a method and system for automatically auditing PCB engineering documents.

Background technique

Currently, a PCB (Printed Circuit Board) project file is usually composed of multiple Gerber files and/or plate making documents. The traditional PCB project file review process requires engineering personnel to interpret each Gerber for a layer. Manual judgment format, inter-layer alignment, layer judgment, measurement size, establishment of PK) file, judgment of total number of holes, minimum aperture, etc., since the graphic elements may exceed 1 million, it takes a long time to analyze the rules and regulations. A large number of the most line width and line gap violations, and then the engineering staff to eliminate the false line, copper, characters take a lot of time. The average time to review a piece of information is approximately 30 minutes, and the review is not efficient.

Summary of the invention

The main object of the present invention is to provide a method and system for automatically auditing PCB engineering documents, aiming at realizing automatic review of PCB engineering documents to improve the efficiency of material collection.

In order to achieve the above object, the present invention provides a method of automatically auditing a PCB engineering file, the method comprising:

Receiving a file package submitted by a user, the file package includes a Gerber file and/or a plate making specification file; displaying a graphic of the Gerber file online, parsing the Gerber file and/or using a preset parameter extraction rule to analyze the Gerber file and/or the general engineering parameter description language rule library The documentation obtains the PCB engineering parameters; generates SPEC files according to the PCB engineering parameters, and outputs the display after integrating the analysis results.

The online display of the graph of the Gerber file is parsed by using a preset parameter extraction rule The Gerber file and/or the general engineering parameter description language rule base parsing the plate making specification file obtains the PCB engineering parameters, including:

When the Gerber file is named by the standard, the Gerber file is parsed to obtain the PCB layer and the number of layers, and the layer name of the Gerber file is modified by a preset layer naming rule, and the layer name is automatically sorted according to the layer name;

When the Gerber file is not named by the standard, after the Gerber file is read, the PCB line and layer are identified by using graphics technology and the layer name of the Gerber file is modified by a preset layer naming rule. The names are automatically sorted by layer.

The online display of the Gerber file graphic, using the preset parameter extraction rule parsing Gerber file and/or the general engineering parameter description language rule library to analyze the plate making specification file to obtain PCB engineering parameters, specifically including:

Parsing the Gerber file to obtain a range of the top line area, and obtaining a preliminary drilling pattern and a position distribution area according to the parameter extraction rule according to the top line area range, and aligning with the top layer center point;

After determining the drilling according to the success rate of the alignment, the drilling position, the minimum number of holes and the minimum aperture are obtained, and the blind buried hole penetration property of the drilling file is defined according to the preset drilling naming rules, and the drilling center and the outer layer are pressed. Line alignment

Display the usage information of the aperture table, and highlight the use element corresponding to the aperture currently viewed; construct the shape of the PCB according to the selection element of the graphic of the Gerber file, and calculate the continuous maximum outer contour to form a profile;

Calculate the PCB test points, the process, and the area of the gold that needs to be surface treated to generate a report of the tool information for the hole.

Parsing the Gerber file to obtain a PCB negative element, deleting the PCB negative element; selecting an element as a start element, and separating the area from the primitive area to a preset minimum search pitch as a search unit, and searching for the start element The network, and the detected non-same network, non-dimensional line of the picture element is determined as a violation;

The elements belonging to the violation are sorted from small to large and filtered to obtain the minimum line spacing.

Wherein, the graphic of the Gerber file is displayed online, and the preset parameter extraction rule is used for parsing

The Gerber file and/or the general engineering parameter description language rule base parsing the plate specification file to obtain PCB engineering parameters, including:

Traversing the package to parse the plate description file contained therein into a unified format text file;

The engineering parameter description file is extracted by using the preset general engineering parameter description language rule library to match the text file of the unified format, and the control information contained in the plate making specification file is collected.

The receiving the file package submitted by the user, before the file package includes the Gerber file and/or the plate making specification file, the method further includes:

Presetting the parameter extraction rule and/or the general engineering parameter description language rule base;

The SPEC file is generated according to the PCB engineering parameters, and after the integrated analysis result is output and displayed, the method further includes:

Export Gerber files to RS274X format files and / or ODB++ format files.

The present invention also provides a system for automatically auditing PCB engineering files, the system comprising:

a receiving module, configured to receive a file package submitted by a user, where the file package includes a Gerber file and/or a plate making specification file; The engineering parameter obtaining module is configured to display a graphic of the Gerber file online, and use the preset parameter extraction rule to parse the Gerber file and/or the general engineering parameter description language rule library to analyze the plate making specification file to obtain the PCB engineering parameter;

The output module is configured to generate a SPEC file according to the PCB engineering parameter, and output the parsing result, and output the module, where the engineering parameter obtaining module specifically includes:

a naming and identifying unit, configured to: when the Gerber file adopts a standard naming, parse and obtain the PCB layer and the number of layers, and modify the layer name of the Gerber file by using a preset layer naming rule, and automatically press the layer name according to the layer name. Do not sort;

a graphic recognition unit, configured to: when the Gerber file is not named by the standard, after the Gerber file is read, use the graphic technology to identify the PCB line and the layer and modify the Gerber file by using a preset layer naming rule. The layer name, automatically sorted by layer name according to the layer name.

The engineering parameter obtaining module specifically includes:

a first parsing unit, configured to parse the Gerber file to obtain a top line region range, obtain a preliminary drilling format and a location distribution region according to the parameter extraction rule, and obtain a preliminary drilling pattern and a position distribution region, and a center point pair with the top layer pad Bit

The drilling parameter acquisition unit is configured to determine the drilling position, the minimum number of holes and the minimum aperture after determining the drilling according to the success rate of the alignment, and define a blind buried hole penetration property of the drilling file according to a preset drilling naming rule. And align the center of the hole with the outer line;

The aperture display unit is configured to display the usage information of the aperture table, and highlight the use element corresponding to the currently viewed aperture;

a shape determining unit, configured to construct a shape of the PCB according to a selection element of a graphic of the Gerber file, and calculate a continuous maximum outer contour to form a profile; A calculation unit for calculating the test points of the PCB, the process, and the area of the gold that requires surface treatment, and generating a report of the tool information of the drilled hole.

The engineering parameter obtaining module specifically includes:

a negative element deleting unit, configured to parse the Gerber file to obtain a PCB negative element, and delete the PCB negative element;

a screening unit, configured to select a picture element as a start element, and use a range that is different from the picture element area to a preset minimum search interval as a search unit, search for a network connected to the start element, and detect the non-identical network, The primitive of the non-size line is determined to be a violation;

The minimum line spacing obtaining unit is configured to sort the primitives belonging to the violation case from small to large and select to obtain the minimum line spacing.

The engineering parameter obtaining module further includes:

a traversing unit, configured to traverse the file package, and parse the plate-making description file contained therein into a text file in a unified format;

The matching unit extracts the engineering parameter description file by using the preset general engineering parameter description language rule library to match the unified format text file, and collects the control information included in the plate making specification file.

The system further includes a preset module, specifically configured to:

An export module for exporting Gerber files to RS274X format files and/or ODB++ format files.

The invention displays, parses, processes and recognizes the PCB engineering parameters on the received file through the rule base, so that the system can automatically standardize the PCB engineering parameters to generate the Spec file and output it to the user, shortening the manual review time and improving the PCB. The efficiency of the engineering review, the audit process and the audit results are more intuitive. DRAWINGS

1 is a schematic flowchart of an embodiment of an automatic auditing PCB engineering file according to an embodiment of the present invention; FIG. 2 is a startup file auditing module in an embodiment of an automatic auditing PCB engineering file provided by the present invention, and parsing the Gerber by using a preset rule; A schematic diagram of the process of obtaining a PCB engineering parameter step from a file;

FIG. 3 is a schematic diagram of a process for a file auditing module in a method for automatically reviewing a PCB project file according to another embodiment of the present invention, which uses a preset rule to parse the Gerber file to obtain a PCB engineering parameter;

4 is a schematic diagram showing a flow of a step of verifying a PCB project parameter by using a preset rule in a startup file review module according to another embodiment of the method for automatically reviewing a PCB project file provided by the present invention;

FIG. 5 is a schematic diagram of a process of a method for activating a file auditing module according to another embodiment of the method for automatically reviewing a PCB project file provided by the present invention, and using the preset rule to parse the Gerber file to obtain a PCB engineering parameter;

6 is a schematic flow chart of still another embodiment of an automatic auditing PCB engineering file method provided by the present invention;

7 is a schematic structural view of an embodiment of an automatic audit PCB engineering file system provided by the present invention;

8 is a schematic structural diagram of an engineering parameter acquisition module in an embodiment of an automatic audit PCB engineering file system provided by the present invention;

9 is a schematic structural diagram of an engineering parameter acquisition module in another embodiment of an automatic audit PCB engineering file system provided by the present invention;

10 is an engineering parameter obtained in another embodiment of the automatic audit PCB engineering file system provided by the present invention Take a schematic diagram of the structure of the module;

11 is a schematic structural view of still another embodiment of an automatic audit PCB engineering file system provided by the present invention;

Figure 12 is a schematic structural view of still another embodiment of the automatic audit PCB engineering file system provided by the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention relates to a method and system for automatically auditing PCB engineering files, wherein the PCB engineering files include Gerber files (photographic files), plate making documents, and the like. In the review of the Gerber file, the protocol rules are used to analyze the Gerber engineering parameters (layer number, minimum line width, minimum line spacing, size, number of holes, minimum aperture, etc.) using geometrical techniques and engineering experience rules. The review of the plate-making documentation uses the preset rule base to identify the engineering information (thickness, surface treatment, copper thickness, etc.) of the text description, and finally integrates the output engineering review form.

The invention mainly relates to the automatic auditing of PCB engineering files, and the rapid review of the files by using preset rules, automatically generating PCB engineering auditing orders, etc., which greatly shortens the time of manual review and improves material efficiency.

1 is a schematic flowchart of a method for automatically reviewing a PCB project file according to an embodiment of the present invention. As shown in FIG. 1, the method includes: Step 110: Receive a file package submitted by a user, where the file package includes a Gerber file and/or a plate making specification file;

The server receives the file submitted by the user through the Internet (for example, an email), a client, or a local area network. In this embodiment, the file includes a Gerber file. In other embodiments, the file package includes Contains the platemaking documentation. Among them, Gerber files refer to the lithography files in the PCB manufacturing industry, which can be exported through design software, such as Protel, AutoCAD, PowerPCB, PADS, MENTOR, ALLEGRO, ZUKEN and other design software. The Gerber file contains parameters such as coordinates, shape descriptions, and so on. Standard Gerber files can be divided into RS-274 and RS-274X. Commonly used data codes include ASCII.

The company (IBM) introduced the character encoding table) and so on. The plate-making documentation complements the PCB design and includes a description of the PCB engineering parameters, such as descriptions of PCB engineering parameters and controls. The format and content of the plate-making instructions provided by different users are different. For example, it can be Word format, Excel format, TXT format or image file, etc. Some control documents also contain controls or layout information.

Step 120: Display a graphic of the Gerber file online, and parse the Gerber file and/or the general engineering parameter description language rule library to analyze the plate making specification file to obtain the PCB engineering parameter by using the preset parameter extraction rule;

The parameter extraction rule is preset according to the engineering design rule of the PCB file, so that the system can obtain the corresponding engineering parameter of the PCB file by using the parameter extraction rule to identify a certain feature of the PCB file. Parameter extraction rules include primitive definition rules, format rules, special rules, formula rules, specific algorithm packages, empirical rules, and integration rules; general engineering parameter description language rules can include: industry rule base, industry SPEC item name keywords, industry SPEC item range keywords, etc. The PCB industry rule base is derived from SPEC item value field keywords and conjunction word keywords. After receiving the file package, the system uses the preset parameter extraction rules to parse the Gerber file and/or the general engineering parameter description language rule library to analyze the plate making specification file to obtain the PCB engineering parameters.

More specifically, PCB engineering parameters include at least the minimum line width size and source, minimum line spacing size and source, PCB format, layer, line, hole structure, minimum aperture, total number of holes, and size. In this embodiment, when the file submitted by the user includes a Gerber file, the system may use the parameter extraction rule to parse the Gerber file to obtain the PCB engineering parameters, and then extract the outer layer line from the layers and the outer layer line. The ring-sized frame is used as the PCB size. When the project parameter description file (for example, picture, Word, Excel, etc.) is included in the Gerber file, the general engineering parameter description language can also be used to match the engineering parameter description file contained in the Gerber file. For example, picture) to get the project parameters. In other embodiments, the file submitted by the user includes a Gerber file or a plate making specification file, and the system parses the Gerber file and/or the general engineering parameter description language to resolve the plate making document according to the file type in the file package. Go to PCB engineering parameters. The size of the minimum line width and the size of the minimum line spacing are measured according to the center, inner and outer edges, end points or track center of the elements in the Gerber file, and the specific measurement standards are selected according to actual needs. And online visualization makes it easy to view Gerber graphics, making it easy to zoom in and out and drag and drop.

Step 130: Generate a SPEC file according to the PCB engineering parameters, and integrate the analysis result to output the display; after parsing the file package to obtain the PCB engineering parameters, the analysis result is integrated into a standard SPEC (Engineering Auditing Document), a standardized structural drawing (for example, The standardized structure diagram can include layer structure, drilling structure and other commonly used structural diagrams), and the output is displayed.

Please refer to FIG. 2 , and more specifically, a specific process diagram for obtaining PCB engineering parameters in a method for automatically reviewing a PCB project file in another embodiment. In this embodiment, and in step 120, Take the following steps to get the project parameters:

Step 121: When the Gerber file is named as a standard, the Gerber file is parsed to obtain the PCB layer and the number of layers, and the layer name of the Gerber file is modified by a preset layer naming rule, and the layer name is automatically sorted according to the layer name.

If the read Gerber file is named by the standard, then after identifying the Gerber file, the system can identify the PCB layer and the number of layers according to the naming rules according to the Gerber file name, and according to the naming of different standards, according to the preset The naming rules give uniform naming. The specific way includes defining the layer with a suffix in the layer name, such as top.

Step 122: When the Gerber file is not named by the standard, after the Gerber file is read, the PCB circuit and the layer are identified by using the graphic technology, and the layer name of the Gerber file is modified by a preset layer naming rule. , automatically sort by layer name according to the layer name.

For Gerber files that are not named with standard naming rules, the PCB layer and number of layers cannot be obtained directly. At this time, the system reads the element information from the read Gerber file, for example, PCB wire characteristics, copper shape, heat dissipation aperture, pressure division pattern shape, etc., due to different functions of each layer of the PCB will be included Different primitives use graphics technology to identify the number of PCB layers and layers. Based on the recognition results, they are uniformly named according to the preset naming rules. The specific method includes defining the layer with a suffix in the layer name. , such as top.

In another embodiment, the system parses the PCB engineering parameters such as the PCB drilling format, the position, the number of holes, and the aperture from the Gerber file. Referring to FIG. 3, in another embodiment, the method for automatically reviewing the PCB engineering file is used. A specific process diagram of the PCB engineering parameters is obtained. As shown in FIG. 3, step 120 specifically includes:

Step 123: Parsing the Gerber file to obtain a range of the top line region, and obtaining a preliminary drilling pattern and a position distribution region according to the parameter extraction rule by referring to the top layer line region range, and the top layer pad The center point is aligned.

The parameter extraction rule is set according to the area arrangement rule corresponding to the drilling coordinate form, and the system parses the Gerber file to obtain data such as the top line area, and refers to the top line area according to the preset rule to obtain the preliminary drilling pattern and the position distribution. The area, further, aligns the initially determined drilling pattern and position with the center of gravity of the top layer pad, and generally selects the extreme value drilling holes in the position distribution area for alignment, such as upper left, middle left, lower left, upper right, right middle, Drill holes in the lower right, upper middle and lower middle positions, and count the success rate of the alignment of each extreme drilling.

Step 124: After determining the drilling according to the success rate of the alignment, obtaining the drilling position, the minimum number of holes and the minimum aperture, defining a blind buried hole penetration property of the drilling file according to a preset drilling naming rule, and pressing the drilling center Align with the outer line.

The extreme drilling with high success rate is determined as the drilling hole, and then the PCB engineering parameters such as the drilling position, the minimum number of holes and the minimum aperture are obtained. For example, the drill named drll-3 is defined as a drill passing through 1-3 layers. Holes, and so on, drl2-4 are defined as drill holes that run through 1-4.

Step 125: Display the usage information of the aperture table, and highlight the use element corresponding to the currently viewed aperture.

Highlighting the currently used element for viewing the aperture will make the view clearer and the positioning more accurate.

Step 126: According to the selection element of the graphic of the Gerber file, construct the shape of the PCB, and calculate the continuous maximum outer contour to form a profile.

The largest outer contour is a closed polygon, and the calculation of the polygon determines the size of the desired PCB.

Step 127: Calculate the test points of the PCB, the process, and the area of the gold that needs to be surface treated, and generate a report of the tool information of the hole. The data obtained in this step is an important parameter required in the PCB production test process, and on this basis, the Set can be further parameterized according to the customer's requirements, so that the package can be shipped.

Referring to FIG. 4, a flow chart for parsing a Gerber file to obtain PCB engineering parameters in a method for automatically auditing a PCB project file in another embodiment is shown in FIG. 4. The specific steps in step 120 include:

Step 128: Parse the Gerber file to obtain the PCB negative element, and delete the PCB negative element; After parsing the Gerber file to obtain the PCB line, use the polygon difference operation to merge and obtain the PCB negative element, and delete the negative element.

Step 129: Select a picture element as a start element, and use a range that is different from the picture element area to a preset minimum search interval as a search unit, and search for a network connected to the start element to determine a search range, and detect the non-identity The elements of the network and non-size lines are determined to be illegal;

In this embodiment, taking the start element as a pad as an example, the range of the minimum search pitch (for example, may be lOmi l ) that is different from the pad area is determined as the search range, and the search range is not the network. If the distance of the non-dimension line is less than 10mi l, if it is, it is determined to be a violation.

Step 12A: Sorting the primitives belonging to the violation case from small to large and filtering to obtain the minimum line spacing;

The primitives belonging to the violation are sorted from small to large, and the exposed line pairs are identified to remove the false lines and the copper skin to obtain the true minimum line spacing.

Referring to FIG. 5, FIG. 5 is a schematic flowchart of analyzing a plate-making specification file in a method for automatically reviewing a PCB project file in another embodiment, and step 120 specifically includes:

Step 12B: traversing the file package, and parsing the plate description file contained therein into a text file in a unified format;

Due to the different description rules and layouts of each PCB design scheme, there will be different formats of the plate making theory. For the document, the system needs to obtain the PCB engineering parameter information from the plate-making specification files of different formats. Collect PCB engineering parameter information contained in the plate specification file when the system traverses the received package to include a separate plate specification file or a plate specification file embedded in the Gerber file. In this embodiment, the plate-making description file of different formats is first converted into a text file of a unified format, so that the text file of the unified format is directly processed in the subsequent steps, when the plate-making specification file is a PDF format or a picture. , using 0C (ROpticalCharacterRecognition, optical character recognition technology) technology to convert it to Word, and further converted to text format through the Word parsing engine; when the plate-making specification file is Word, through the Word parsing engine into a text format; When the plate specification file is in Excel format, it is converted into a text format by the Excel parsing engine.

Step 12C: extracting an engineering parameter description file by using a preset general engineering parameter description language rule library to match a unified format text file, and collecting control information included in the plate making specification file;

The general engineering parameter description language rule base may specifically include, but is not limited to, an industry rule base (which may include SPEC item value domain keywords and connection keywords), an industry SPEC item name keyword, and an industry SPEC item value. Domain keywords, etc. The rule base can be pre-stored in a memory in the system in a specific data format. After the system is initialized, the general engineering parameter description language rule base is called from the memory and then matched with the unified format text file obtained in step S280. For example, the text file may be firstly matched by the industry rule library to extract Keyword, if there is a synonym in the text, you can first convert it into an industry standard word, and further use the industry SPEC item name keyword to match the collected keywords to obtain the SPEC project value field, and then judge the selected item of the SPEC project value field. Get relevant data and output relevant data such as standard SPEC project value range. In addition to this, the system also determines the control of the plate specification file in order to extract the relevant engineering parameter description data. While reviewing the platemaking documentation through the above steps, it also supports traditional original document review to supplement the review. After obtaining the control information and the engineering parameter description file from the plate making specification file, the control information and the engineering parameter description file obtained by matching the plate making specification file are integrated with the relevant parameters obtained by parsing the Gerber file, and the standard engineering review form and structure are displayed. Figure and so on.

Referring to FIG. 6, on the basis of the foregoing embodiment, in another embodiment, before step 1 10, the method further includes:

Step 100: Pre-set parameter extraction rule and/or general engineering parameter description language rule base; In this embodiment, the system can accept the user input preset parameter extraction rule and/or general engineering parameter description language rule base, Gerber file parsing Rules include primitive definition rules, formatting rules, special rules, formula rules, specific algorithm packages, empirical rules, and integration rules; general engineering parameter description language rules can include: industry rule base, industry SPEC item name keywords, industry SPEC items Value keywords, etc. The PCB industry rule base is derived from SPEC item value keywords and conjunction keywords. Through the preset steps, the system can update the parameter extraction rules and the general engineering parameter description language rule base in time, so that the audit result is more accurate. After the system is started, each rule base is initialized to review the received package and obtain the project parameters.

After step 130, the method further includes:

Step 140: Export the Gerber file to an RS274X format file and/or an 0DB++ format file. Exporting Gerber files to RS274X format files and / or 0DB++ format files can further expand the scope of application of this solution and provide richer services according to users' needs.

The method for automatically auditing PCB engineering files provided by the invention directly displays, parses, processes and recognizes PCB engineering parameters through the rule library, so that the system can automatically normalize PCB engineering parameters to generate Spec files and output to the user. , shortening the time for manual review, improving the efficiency of PCB engineering review, and making the audit process and audit results more intuitive.

Please refer to FIG. 7, which is a schematic diagram of the structure of the system 70 for automatically reviewing PCB engineering files proposed by the present invention. Figure, as shown in Figure 7, the system includes:

The receiving module 710 is configured to receive a file package submitted by the user, where the file package includes a Gerber file and/or a plate making specification file;

The engineering parameter obtaining module 720 is configured to display a graphic of the Gerber file online, and parse the Gerber file and/or the general engineering parameter description language rule library by using a preset parameter extraction rule to obtain a PCB engineering parameter;

The output module 730 is configured to generate a SPEC file according to the PCB engineering parameters, and integrate the analysis result to output the display.

The receiving module 710 receives the file submitted by the user through the Internet (for example, an email), a client, or a local area network. In this embodiment, the file may include a Gerber file. In other embodiments, the file The plate also contains a plate description document. Among them, Gerber files refer to the lithography files in the PCB manufacturing industry, which can be exported through design software, such as Protel, AutoCAD, PowerPCB, PADS, MENTOR, ALLEGRO, ZUKEN and other related software. The Gerber file contains parameters such as coordinates and shape descriptions of the primitives. Standard Gerber files can be divided into RS-274 and RS-274X. Common data codes include ASCII, EBCDIC and so on. The plate-making documentation complements the PCB design and includes descriptions of PCB engineering parameters, such as descriptions of PCB engineering parameters and controls. The format and content of the plate-making instructions provided by different users are different. For example, it can be Word format, Excel format, TXT format or image file, etc. Some control documents also contain controls or layout information.

The parameter extraction rule is preset according to the engineering design rule of the PCB file, so that the engineering parameter module 720 can obtain the corresponding engineering parameter of the PCB file after identifying a certain feature of the PCB file by using the parameter extraction rule. Parameter extraction rules may include Gerber file parsing rules and/or general engineering parameter description language libraries, Gerber file parsing rules including primitive definition rules, format rules Then, special rules, formula rules, specific algorithm packages, empirical rules, and integration rules; general engineering parameter description language rules can include: industry rule base, industry SPEC item name keywords, industry SPEC item value domain keywords, and so on. The PCB industry rule base is derived from SPEC item value field keywords and conjunction word keywords. After receiving the file package, the engineering parameter acquisition module 20 identifies the file package by using a preset parameter extraction rule to obtain PCB engineering parameters.

More specifically, PCB engineering parameters include at least the minimum line width size and source, minimum line spacing size and source, PCB format, layer, line, hole structure, minimum aperture, total number of holes, and size. In this embodiment, when the file submitted by the user includes the Gerber file, the engineering parameter obtaining module 720 may use the parameter extraction rule to parse the Gerber file to obtain the PCB engineering parameter, and then extract the outer layer line from each layer and The outer frame of the outer ring ring size is used as the PCB size. When the engineering parameter description file (for example, picture, Word, Excel, etc.) is included in the Gerber file, the engineering parameter obtaining module 720 can also match the Gerber file by using the general engineering parameter description language. To get engineering parameters. In other embodiments, the file submitted by the user includes a Gerber file or a plate making specification file, and the engineering parameter obtaining module 720 uses the parameter extraction rule to parse the Gerber file and/or the general engineering parameter description language according to the file type in the file package. Documentation, get PCB engineering parameters.

After parsing the file package to obtain the PCB engineering parameters, the output module 730 integrates the analysis result into a standard engineering review form SPEC document, a standardized structure diagram (for example, the standardized structure diagram may include a layer structure, a drilling structure) As well as other commonly used structural diagrams), the output is displayed.

Please refer to FIG. 8 , which is a schematic structural diagram of an engineering parameter obtaining module 720 in a system 70 for automatically reviewing a PCB project file in another embodiment. On the basis of the foregoing embodiment, more specifically, the engineering parameter obtaining module 720 specifically includes a name. Identification unit 721 and graphic recognition unit 722, wherein:

a naming and identifying unit 721, configured to parse the Gerber file when the Gerber file is named as a standard Get the PCB layer and the number of layers and modify the layer name of the Gerber file by the preset layer naming rules, and automatically sort by layer name according to the layer name;

The graphic recognition unit 722 is configured to: when the Gerber file is not used for standard naming, after the Gerber file is read, use the graphic technology to identify the PCB line and the layer and modify the Gerber file by using a preset layer naming rule. The layer name is automatically sorted by layer name according to the layer name.

If the read Gerber file is named by standard, the name recognition unit 721 can identify the PCB layer and the layer number according to the Gerber file name and the reference naming rule after identifying the Gerber file. For Gerber files that are not named with standard naming rules, the PCB layer and layer number cannot be obtained directly. At this time, the graphic recognition unit 722 reads the primitive information from the Gerber file, for example, the PCB wire characteristics, the copper shape, the heat dissipation aperture, the pressure division pattern shape, etc., and the different functions of each layer of the PCB may contain different The graphics element 722 identifies the number of layers and layers of the PCB using pattern recognition techniques.

Further, in another embodiment, the engineering parameter acquisition module 720 can also obtain PCB engineering parameters such as PCB drilling format, position, number of holes, and aperture from the Gerber file. Referring to FIG. 9, in another embodiment, A schematic structural diagram of the engineering parameter obtaining module 720, as shown in FIG. 9, the module specifically includes:

The first parsing unit 723 is configured to parse the Gerber file to obtain a range of the top line region, and obtain a preliminary drilling format and a location distribution area according to the parameter extraction rule by referring to the top line region range, and align with the top pad center point;

The drilling parameter obtaining unit 724 is configured to obtain a drilling position, a minimum hole number and a minimum aperture after determining the drilling according to the alignment success rate, and define a blind buried hole penetration property of the drilling file according to a preset drilling naming rule. , and align the center of the hole with the outer line.

The aperture display unit 725 is configured to display usage information of the aperture table, and highlight the currently viewed The use element corresponding to the aperture;

The shape determining unit 726 is configured to construct a shape of the PCB according to the selected element of the graphic of the Gerber file, and calculate a continuous maximum outer contour to form a profile;

The calculation unit 727 is used to calculate the test points of the PCB, the process, and the area of the gold that needs surface treatment, and generate a report of the tool information of the hole.

The parameter extraction rule is set according to the area arrangement rule corresponding to the drilling coordinate form, and the first parsing unit 723 parses the Gerber file to obtain data such as the top line area, and refers to the top line area according to the preset rule to obtain the preliminary drilling hole. The format and the position distribution area, further, the initially determined drilling pattern and position are aligned with the center of gravity of the top layer pad, and the extreme value drilling holes in the position distribution area are usually selected for alignment, such as upper left, middle left, lower left, upper right , the middle right, the lower right, the upper middle and lower middle holes, and count the success rate of each extreme drilling.

After the first parsing unit 723 calculates the success rate of the alignment, the drilling parameter acquisition unit 724 determines the extremum drilling with high success rate of the alignment as the drilling hole, and then obtains the PCB such as the drilling position, the minimum number of holes and the minimum aperture. Engineering parameter data.

More specifically, in another embodiment, the engineering parameter obtaining module 720 can also obtain the minimum line spacing and the minimum line width from the Gerber file. Referring to FIG. 10, the engineering parameter module 720 specifically includes: a negative element deleting unit 728, Parsing the Gerber file to obtain the PCB negative element, and deleting the detected PCB negative element;

The filtering unit 729 is configured to select a primitive as a start element, and a range that is different from the primitive area to a preset minimum search span as a search unit, and the network connected to the start element is determined as a search range, and the detected range is detected. The non-same network, non-dimension line primitives are determined to be illegal;

The line spacing obtaining unit 72A is configured to filter the violation cases from small to large to obtain the minimum line spacing. After the negative element deletion unit 728 parses the Gerber file to obtain the PCB line, the polygon difference element is used to obtain the PCB negative element, and the detected negative element is further deleted. The screening unit 729 takes the start element as a pad as an example, and determines a range that is different from the pad area to a preset minimum search pitch (for example, may be lOmil) as the search range, and the search range is not the network, the non-size. Whether the line's primitive is less than lOmil, and if so, it is determined to be a violation. The line spacing obtaining unit 72A sorts the violations from small to large, and recognizes that the exposed line pairs are selected to exclude the false lines and the copper sheets to obtain the true minimum line spacing.

Referring to FIG. 11, a schematic structural diagram of an engineering parameter obtaining module in another embodiment is shown in FIG. 11. In this embodiment, when the receiving module receives a file package including a Gerber file and a plate making specification file, the engineering parameter The acquisition module also includes:

a text parsing unit 72B, configured to traverse the file package, and parse the plate-making description file included therein into a text file in a unified format;

The matching unit 72C is configured to extract a project parameter description file by using a preset general engineering parameter description language rule library to match the unified format text file, and control information included in the mobile phone plate making specification file;

Due to the different description rules and layouts of each PCB design scheme, there will be different formats of the plate making specification files, and the system needs to obtain the PCB engineering parameter information from the plate-making specification files of different formats. In this embodiment, when the text parsing unit 72B traverses the received file package and further includes a separate plate making specification file or a plate making specification file embedded in the Gerber file, the PCB engineering parameter information included in the plate making specification file is collected. The text parsing unit 72B first converts the plate-making description files of different formats into a text file of a unified format, so as to directly process the text file of the unified format in the subsequent steps, when the plate-making specification file is a PDF format or a picture, the text The parsing unit 72B converts it into OCR (Optical Character Recognition Technology) technology first Word, and further converted into a text format by the Word parsing engine; when the coring specification file is Word, the text parsing unit 72B converts into a text format by the Word parsing engine; when the coring specification file is in the Excel format, the text parsing unit 72B passes The Excel parsing engine converts to text format and so on.

The general engineering parameter description language rule base may specifically include, but is not limited to, an industry rule base (which may include SPEC item value domain keywords and connection keywords), an industry SPEC item name keyword, and an industry SPEC item value. Domain keywords, etc. The rule base can be pre-stored in a memory in the system in a specific data format. After the system is initialized, the matching unit 72C calls the general engineering parameter description language rule base from the memory and matches the obtained unified format text file. For example, the matching unit 72C may first use the industry rule library to perform full text matching on the text file. To extract the keyword, if there is a synonym in the text, you can first convert it into an industry standard word, and further use the industry SPEC item name keyword to match the collected keywords to obtain the SPEC project value field, and then judge the SPEC project value field. The selected item gets the relevant data and outputs relevant data such as the standard SPEC project value range. In addition to this, the system also determines the control of the plate specification file in order to extract the relevant engineering parameter description data. While reviewing the platemaking documentation through the above steps, it also supports traditional original document review to supplement the review.

After obtaining the control information and the engineering parameter description file from the plate making specification file, the output module 30 integrates the control information and the engineering parameter description file obtained by the matching plate making specification file with the relevant parameters obtained by parsing the Gerber file, and outputs a standard engineering review. Single, structure diagram, etc.

Referring to FIG. 12, a schematic diagram of a structure of a system 70 for automatically reviewing a PCB project file according to another embodiment is shown in FIG. 12. On the basis of the foregoing embodiment, the system further includes:

The preset module 700 is configured to preset a parameter extraction rule and/or a general engineering parameter description language rule base. The exporting module 740 is configured to export the Gerber file into an RS274X format file and/or an 0DB++ format file.

In this embodiment, the preset module 700 can accept a user input preset parameter extraction rule and/or a general engineering parameter description language rule base, and the Gerber file parsing rule includes a primitive definition rule, a format rule, a special rule, a formula rule, Specific algorithm packages, rules of thumb, and integration rules; general engineering parameter description language rules may include: industry rule base, industry SPEC item name keywords, industry SPEC item value domain keywords, and so on. The PCB industry rule base is based on SPEC item value keywords and conjunction keywords. Through the preset steps, the system can update the parameter extraction rules and the general engineering parameter description language rule base in time, so that the audit result is more accurate. After the system is started, each rule library is initialized to review the received package and obtain the project parameters.

The system for automatically auditing PCB engineering files provided by the invention parses, processes and recognizes PCB engineering parameters through the rule base, so that the system can automatically standardize the PCB engineering parameters and output to the user, thereby shortening the manual auditing. Time to improve the efficiency of PCB engineering audits.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope of the present invention. All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

claims

1. A method for automatically reviewing PCB engineering documents, which is characterized by including:

Receive file packages submitted by users, which include Gerber files and/or plate making instructions files;

Display the graphics of the Gerber file online, use the preset parameter extraction rules to parse the Gerber file and/or the general engineering parameter description language rule base to parse the plate making instruction file to obtain the PCB engineering parameters; generate a SPEC file based on the PCB engineering parameters, integrate the analysis results and output show.

2. The method according to claim 1, characterized in that, the graphics of the Gerber file are displayed online, and the Gerber file is analyzed using preset parameter extraction rules and/or the general engineering parameter description language rule library is used to analyze the plate making description file. PCB engineering parameters, including:

When the Gerber file adopts standard naming, the Gerber file is parsed to obtain the PCB layer level and number of layers, and the layer name of the Gerber file is modified through the preset layer naming rules, and the layer name is automatically sorted according to the layer name;

When the Gerber file does not use standard naming, after reading the Gerber file, graphics technology is used to identify the PCB circuit and layer and modify the layer name of the Gerber file through the preset layer naming rules. According to the layer Alias names are automatically sorted by layer.

3. The method according to claim 1, characterized in that, the graphics of the Gerber file are displayed online, and the Gerber file is parsed using preset parameter extraction rules and/or the general engineering parameter description language rule library is used to parse the plate making instruction file. PCB engineering parameters, including:

Parse the Gerber file to obtain the top line area range, obtain the preliminary drilling format and location distribution area with reference to the top line area range according to the parameter extraction rules, and align it with the top pad center point;

After the drilling is determined based on the alignment success rate, the drilling position, minimum number of holes, and minimum hole diameter are obtained, and the blind and buried hole penetration attributes of the drilling file are defined according to the preset drilling naming rules, and according to the drilling center and outer layer line alignment;

Display the usage information of the aperture table, and highlight the usage elements corresponding to the currently viewed aperture; Construct the shape of the PCB based on the selected elements of the graphics in the Gerber file, and calculate the continuous maximum outer contour to form the Profile;

Calculate PCB test points, roughness, and gold-plated area that require surface treatment, and generate a report of drilling tool information.

4. The method according to claim 1, characterized in that, the graphics of the Gerber file are displayed online, and the Gerber file is parsed using preset parameter extraction rules and/or the general engineering parameter description language rule library is used to parse the plate making instruction file. PCB engineering parameters, including:

Parse the Gerber file to obtain the PCB negative element, delete the PCB negative element; select a graphic element as the start element, use the range that differs from the area of the graphic element by the preset minimum search spacing as the search unit, and connect the search to the start element network, and determine the detected primitives that are not the same network and non-dimension lines as violations;

Sort the primitives belonging to violations from small to large and then filter them to obtain the minimum line distance.

5. The method according to claim 1, characterized in that, the graphics of the Gerber file are displayed online, and the Gerber file is parsed using preset parameter extraction rules and/or the general engineering parameter description language rule library is used to parse the plate making instruction file. PCB engineering parameters, including:

Traverse the file package and parse the platemaking instruction files contained therein into text files in a unified format;

Utilize the preset general engineering parameter description language rule base to match the unified format text file to extract the engineering parameter description file, and collect the control information contained in the plate making description file;

The receiving of the file package submitted by the user, before the file package includes the Gerber file and/or the plate making instruction file, also includes: Preset the parameter extraction rules and/or general engineering parameter description language rule library;

The SPEC file is generated based on the PCB engineering parameters, and after integrating the analysis results and outputting the display, it also includes:

Export Gerber files to RS274X format files and/or 0DB++ format files.

6. A system for automatically reviewing PCB engineering files, characterized in that the system includes: a receiving module for receiving a file package submitted by the user, where the file package includes Gerber files and/or plate making instructions files;

The engineering parameter acquisition module is used to display the graphics of the Gerber file online, and uses the preset parameter extraction rules to parse the Gerber file and/or the general engineering parameter description language rule base to parse the plate making specification file to obtain the PCB engineering parameters;

Output module, used to generate SPEC files based on PCB engineering parameters, integrate the analysis results and output the display

7. The system according to claim 6, characterized in that the engineering parameter acquisition module specifically includes:

The naming recognition unit is used to parse and obtain the PCB layer and number of layers when the Gerber file adopts standard naming, and modify the layer name of the Gerber file through the preset layer naming rules, and automatically press the layer name according to the layer name. Don’t sort;

Graphic recognition unit, used when the Gerber file does not use standard naming, after reading the Gerber file, use graphics technology to identify the PCB lines and layers and modify the Gerber file through the preset layer naming rules Layer name, automatically sort by layer based on the layer name.

8. The system according to claim 6, characterized in that the engineering parameter acquisition module specifically includes:

The first parsing unit is used to parse the Gerber file to obtain the top-level line area range, root According to the parameter extraction rules, the preliminary drilling pattern and position distribution area are obtained with reference to the top-level line area range, and aligned with the top-level pad center point;

The drilling parameter acquisition unit is used to obtain the drilling position, minimum number of holes, and minimum hole diameter after determining the drilling based on the alignment success rate, and define the blind and buried hole penetration attributes of the drilling file according to the preset drilling naming rules. And align it with the outer line according to the center of the drill hole;

The aperture display unit is used to display the usage information of the aperture table and highlight the usage elements corresponding to the currently viewed aperture;

The shape determination unit is used to construct the shape of the PCB based on the selected elements of the Gerber file graphics, and calculate the continuous maximum outer contour to form a Profile;

The calculation unit is used to calculate the PCB test points, process and gold-plated area that require surface treatment, and generate a report of drilling tool information.

9. The system according to claim 6, characterized in that the engineering parameter acquisition module specifically includes:

Negative element deletion unit, used to parse the Gerber file to obtain PCB negative elements, and delete the PCB negative elements;

The filtering unit is used to select a graphic element as the start element, use the range that differs from the area of the graphic element by the preset minimum search distance as the search unit, search for the network connected to the start element, and compare the detected non-identical networks, Elements other than dimension lines are determined to be violations;

The minimum line spacing acquisition unit is used to sort the primitives belonging to violation conditions from small to large and then filter them to obtain the minimum line spacing.

10. The system according to claim 6, characterized in that the engineering parameter acquisition module further includes:

Traversal unit, used to traverse the file package and parse the files contained in it into a unified format text file;

The matching unit uses the preset general engineering parameter description language rule base to match the uniform format text file to extract the engineering parameter description file, and collects the control information contained in the plate making description file; the system also includes:

A preset module, used to preset the parameter extraction rules and/or the general engineering parameter description language rule library;

Export module, used to export Gerber files to RS274X format files and/or 0DB++ format files.