CN102819552A - Method and system for automatically examining and verifying Printed Circuit Board (PCB) project files - Google Patents
Method and system for automatically examining and verifying Printed Circuit Board (PCB) project files Download PDFInfo
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- CN102819552A CN102819552A CN201210213179XA CN201210213179A CN102819552A CN 102819552 A CN102819552 A CN 102819552A CN 201210213179X A CN201210213179X A CN 201210213179XA CN 201210213179 A CN201210213179 A CN 201210213179A CN 102819552 A CN102819552 A CN 102819552A
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Abstract
The invention relates to a method and a system for automatically examining and verifying printed circuit board (PCB) project files. The method comprises the following steps of: receiving a file package submitted by a user, wherein the file package comprises Gerber files and/or platemaking description files; starting a file examination and verification module, and utilizing preset parameter extraction rules and/or general project parameter description language rule base to analyze the file package to obtain PCB project parameters; and integrating analysis results and outputting and displaying. In the invention, the received Gerber files are compared in accordance with preset rules so as to identify the PCB project parameters, so that a system can automatically standardize the PCB project parameters and outputs the standardized PCB project parameters to the user, thus shortening manual examination and verification time for the Gerber files and improving efficiency of examining and verifying PCB materials.
Description
Technical field
The present invention relates to the printed-board technology field, specifically is the method and system of examining the PCB project file automatically.
Background technology
At present; A PCB (Printed Circuit Board, printed circuit board (PCB)) project file normally is made up of a plurality of Gerber files and/or plate-making supporting paper, and tradition needs the engineering staff to understand to PCB project file auditing flow; The corresponding figure layer of each Gerber; Need artificial judgment form, interlayer alignment, layer not judgement, measurement size, set up Profile, judge total hole count, minimum-value aperture etc. because graphic element possibly surpass 1,000,000, need calculate a large amount of live width line-spacing fault situation through relating to rule inspection analysis meter for a long time; Get rid of line simulator through the engineering staff again, copper sheet, character require a great deal of time.Approximately be 30 minutes the averaging time of a data of audit, and review efficiency is not high.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method of automatic audit PCB project file, is intended to realize the automatic audit to the PCB project file, to improve borrow efficient.
In order to achieve the above object, the present invention proposes a kind of method of automatic audit PCB project file, and this method may further comprise the steps:
Receive the literature kit that the user submits to, said literature kit comprises Gerber file and/or plate-making supporting paper;
The startup file auditing module, parameter extraction rule that utilization is preset and/or general engineering parametric description language rule storehouse are resolved said literature kit and are got access to the PCB engineering parameter;
Output shows after integrating analysis result.
Preferably, said engineering parameter comprise PCB form, layer not, circuit, minimum feature and line-spacing, hole structure, minimum-value aperture, total hole count and size.
Preferably, said startup file auditing module, utilize the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprise:
When Gerber file employing standard is named, then resolve said Gerber file and get access to the PCB layer and do not reach the number of plies;
When not employing standard of Gerber file is named, then after reading said Gerber file, utilize the graphics technology to recognize PCB circuit and layer not.
Preferably, said startup file auditing module, utilize the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprise:
Resolve said Gerber file and obtain the top line regional extent, obtain primary drilling form and position distribution zone with reference to said top line regional extent according to said parameter extraction rule, and with the contraposition of top layer pad center point;
After the definite boring of contraposition success ratio, get access to bore position, minimum hole count and minimum-value aperture.
Preferably, said startup file auditing module, utilize the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprise:
Resolve said Gerber file and obtain PCB negative film element, delete said PCB negative film element;
Choosing a pel is start element; To differ scope into preset minimum search spacing as the search unit with the figure elemental area; Search for the network that is connected with start element, and the graphic element of detected non-consolidated network, non-dimension line is confirmed as the fault situation;
To belong to the ascending ordering of the graphic element back screening of fault situation, to get access to the minimum line distance.
Preferably, the startup file auditing module, utilize the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprise:
Travel through said literature kit, the plate-making supporting paper that is wherein comprised is resolved to the text of consolidation form;
Utilize the text that preset universal engineering parameter descriptive language rule base matees said consolidation form to extract the engineering parameter description document, and collect the control information that is comprised in the plate-making supporting paper.
Preferably, the step that the literature kit that said reception user submits to, said literature kit comprise Gerber file and/or plate-making supporting paper also comprises before:
Preset said parameter extraction rule and/or general engineering parametric description language rule storehouse.
The present invention also proposes a kind of system of automatic audit PCB project file, and this system comprises:
Receiver module is used to receive the literature kit that the user submits to, and said literature kit comprises Gerber file and/or plate-making supporting paper;
The engineering parameter identification module is used for the startup file auditing module, and parameter extraction rule that utilization is preset and/or general engineering parametric description language rule storehouse are resolved said literature kit and got access to the PCB engineering parameter;
Output module is used to integrate that output shows behind the analysis result.
Preferably, said engineering parameter comprise PCB form, layer not, circuit, minimum feature and line-spacing, hole structure, minimum-value aperture, total hole count and size.
Preferably, said engineering parameter identification module specifically comprises:
The name recognition unit is used for when said Gerber file employing standard is named, and then parsing gets access to the PCB layer and do not reach the number of plies;
The Figure recognition unit is used for when not employing standard of said Gerber file is named, and then after reading the Gerber file, utilizes the graphics technology to recognize PCB circuit and layer not.
Preferably, said engineering parameter acquisition module specifically comprises:
First resolution unit is used to resolve said Gerber file and gets access to the top line regional extent;
Bit cell is used for obtaining primary drilling form and position distribution zone according to said parameter extraction rule with reference to said top line regional extent, and with the contraposition of top layer pad center point;
The drilling parameter acquiring unit is used for getting access to bore position, minimum hole count and minimum-value aperture according to after the definite boring of contraposition success ratio.
Preferably, said engineering parameter acquisition module specifically comprises:
Negative film element delete cells is used to resolve said Gerber file and obtains PCB negative film element, deletes said PCB negative film element;
Screening unit; Being used to choose a pel is start element; To differ scope into preset minimum search spacing as the search unit with the figure elemental area, the network that search is connected with start element, and the graphic element of detected non-consolidated network, non-dimension line confirmed as the fault situation;
Minimum line is used for the ascending ordering of the graphic element that belongs to fault situation back screening, to get access to the minimum line distance apart from acquiring unit.
Preferably, said engineering parameter acquisition module also comprises:
The traversal unit is used to travel through said literature kit, the plate-making supporting paper that is wherein comprised is resolved to the text of consolidation form;
Matching unit utilizes the text that preset universal engineering parameter descriptive language rule base matees said consolidation form to extract the engineering parameter description document, and collects the control information that is comprised in the plate-making supporting paper.
Preferably, said system also comprises preset module, specifically is used for:
Preset said parameter extraction rule and/or general engineering parametric description language rule storehouse.
The present invention resolves, handles the file that receives through rule base and identifies the PCB engineering parameter, and the system that makes can shorten the time of manual examination and verification automatically with exporting the user to after the standardization of PCB engineering parameter, improves the efficient of PCB engineering audit.
Description of drawings
Fig. 1 is the schematic flow sheet of automatic audit PCB project file method one embodiment provided by the invention;
Fig. 2 is a startup file auditing module among automatic audit PCB project file method one embodiment provided by the invention, utilizes presetting rule to resolve the schematic flow sheet that said Gerber file gets access to PCB engineering parameter step;
Fig. 3 is a startup file auditing module among the another embodiment of automatic audit PCB project file method provided by the invention, utilizes presetting rule to resolve the schematic flow sheet that said Gerber file gets access to PCB engineering parameter step;
Fig. 4 is a startup file auditing module among the another embodiment of automatic audit PCB project file method provided by the invention, utilizes presetting rule to resolve the schematic flow sheet that said Gerber file gets access to PCB engineering parameter step;
Fig. 5 is a startup file auditing module among the another embodiment of automatic audit PCB project file method provided by the invention, utilizes presetting rule to resolve the schematic flow sheet that said Gerber file gets access to PCB engineering parameter step;
Fig. 6 is the schematic flow sheet among the another embodiment of automatic audit PCB project file method provided by the invention;
Fig. 7 is the structural representation among automatic audit PCB project file one embodiment of system provided by the invention;
Fig. 8 is the structural representation of engineering parameter acquisition module among automatic audit PCB project file one embodiment of system provided by the invention;
Fig. 9 is the structural representation of engineering parameter acquisition module among the automatic audit PCB project file another embodiment of system provided by the invention;
Figure 10 is the structural representation of engineering parameter acquisition module among the automatic audit PCB project file another embodiment of system provided by the invention;
Figure 11 is the structural representation among the automatic audit PCB project file another embodiment of system provided by the invention;
Figure 12 is the structural representation among the automatic audit PCB project file another embodiment of system provided by the invention.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention relates to a kind of method and system of automatic audit PCB project file, wherein, the PCB project file includes Gerber file (light is painted file), plate-making supporting paper etc.In the audit that the Gerber file is carried out, resolve according to protocol rule; Utilize geometric figure to learn a skill and engineering experience rule calculating Gerber engineering parameter (number of plies, minimum feature, minimum line distance, size, hole count, minimum-value aperture etc.); The audit of plate-making supporting paper then utilizes the engineering information (thickness of slab, surface treatment, copper are thick etc.) of presetting rule storehouse identification text description, and it is single to integrate the audit of output engineering at last.
The present invention relates generally to the automatic audit to the PCB project file, after the rule that utilization is preset is checked file fast, generates PCB engineering audit list etc. automatically, has shortened the artificial time of checking greatly, has improved material efficiency.
Please with reference to Fig. 1, be the schematic flow sheet of the method for the automatic audit PCB project file that proposes in one embodiment of the invention, as shown in Figure 1, this method may further comprise the steps:
S100: receive the literature kit that the user submits to, said literature kit comprises Gerber file and/or plate-making supporting paper;
Server receives the literature kit that the user submits to through modes such as internet (for example Email), client or LANs; In the present embodiment; Include the Gerber file in this document bag, in other embodiment, also comprise plate-making supporting paper in this document bag.Wherein, the Gerber file is meant that the light in the PCB manufacturing industry paints file, can derive Protel for example, AutoCAD, PowerPCB, PADS, MENTOR, ALLEGRO, design softwares such as ZUKEN through design software.The parameter such as coordinate, shape description that comprises pel in the Gerber file.The Gerber file of standard can be divided into two kinds of RS-274 and RS-274X; Numeric data code commonly used comprises ASCII (American Standard Code for Information Interchange; ASCII(American Standard Code for information interchange)); EBCDIC (Extended Binary Coded Decimal Interchange Code is the character code table of International Business Machines Corporation (IBM) release) etc.And plate-making supporting paper is to replenish what PCB designed, wherein includes the explanation to the PCB engineering parameter, for example the description of PCB engineering parameter, control.Plate-making supporting paper form that different user provides and content are different, for example, can be Word form, Excel form, TXT form or picture file etc., in some plate-making supporting papers, also comprise control or layout information.
S200: the startup file auditing module, parameter extraction rule that utilization is preset and/or general engineering parametric description language rule storehouse are resolved said literature kit and are got access to the PCB engineering parameter;
Wherein, the parameter extraction rule preestablishes according to the engineering design rule trend of PCB file, and the system that makes can get access to PCB file corresponding engineering parameter after utilizing this parameter extraction rule to recognize a certain characteristic of PCB file.The parameter extraction rule comprises graphic element definition rule, format convention, dedicated rules, formula rule, special algorithm routine package, empirical rule and rules; General engineering parametric description language rule can comprise: industry rule base, industry SPEC item title key word, industry SPEC item codomain key word etc., PCB industry rule base obtains according to SPEC item codomain key word and conjunction key word.After receiving literature kit, parameter extraction rule that system's utilization is preset and/or general engineering parametric description language rule storehouse resolution file bag get access to the PCB engineering parameter.
More concrete, the PCB engineering parameter comprise at least PCB form, layer not, circuit, minimum feature and line-spacing, hole structure, minimum-value aperture, total hole count and size etc.In the present embodiment; When including the Gerber file in the file that the user submits to; After then system's parameter extraction rule parsing capable of using Gerber file obtains the PCB engineering parameter; From each layer extract surround outer-layer circuit and with near the housing of outer-layer circuit loop size as the PCB size, when in the Gerber file, comprising engineering parameter description document (for example, picture, Word, Excel etc.); The engineering parameter description document (for example, picture) that is comprised in the general engineering parametric description language coupling Gerber file also capable of using is to obtain engineering parameter.In other embodiments; Include the Gerber file or the supporting paper of making a plate in the literature kit that the user submits to; System utilizes parameter extraction rule parsing and/or general engineering parametric description language resolution file bag according to the file type in the literature kit, gets access to the PCB engineering parameter.
S300: output shows after integrating analysis result;
After the resolution file bag gets access to the PCB engineering parameter; Analysis result (for example is integrated into the SPEC (the engineering audit is certificate only) of standard, standardized structural drawing; Can comprise a layer structure, hole structure and other common structural figure in this standardized structural drawing) after, output shows.
Please, more concrete with reference to Fig. 2, for getting access to the idiographic flow synoptic diagram of PCB engineering parameter in the method for examining the PCB project file among the another embodiment automatically, in the present embodiment, and in step S200, take following steps to obtain engineering parameter:
S210: when the Gerber file is standard when name, resolves this Gerber file and get access to the PCB layer and do not reach the number of plies;
If the Gerber file that reads has adopted the standard name, system according to the Gerber filename, can identify the PCB layer with reference to naming rule and not reach the number of plies after recognizing the Gerber file so.
S220: when not employing standard of said Gerber file is named, then after reading the Gerber file, utilize the graphics technology to recognize PCB circuit and layer not;
Gerber file for not adopting the name of standard naming rule then can't directly get access to the PCB layer and not reach the number of plies.At this moment; The primitive information that system reads from the Gerber file that reads; For example; PCB wire characteristic, copper sheet shape, heat radiation aperture, dividing potential drop diagram shape etc. because other function difference of each layer of PCB can comprise different pels, then utilize the graphics technology to recognize the PCB number of plies and layer not.
In another embodiment; System resolves PCB engineering parameters such as getting access to PCB boring form, position, hole count and aperture from the Gerber file; Please with reference to Fig. 3; For getting access to the concrete schematic flow sheet of PCB engineering parameter in the method for examining the PCB project file among the another embodiment automatically, as shown in Figure 3, step S200 specifically comprises:
S230: resolve the Gerber file and obtain the top line regional extent, obtain primary drilling form and position distribution zone with reference to said top line regional extent according to the parameter extraction rule, and with the contraposition of top layer pad center point;
Wherein, The parameter extraction rule gets access to data such as top line zone according to the corresponding area of the boring coordinate form rule setting of arranging behind the system analysis Gerber file, according to presetting rule with reference to the top line zone; Get access to primary drilling form and position distribution zone; Further, with boring form and position and the contraposition of top layer pad center of gravity tentatively confirmed, contraposition is carried out in the extreme value boring in the chosen position distributed areas usually; As in upper left, the left side, a left side down, in upper right, the right side, right upper and lower in, the boring of middle position down, and add up the contraposition success ratio that each extreme value is holed.
S240: after the definite boring of contraposition success ratio, get access to bore position, minimum hole count and minimum-value aperture;
Boring is confirmed as in the extreme value boring that the contraposition success ratio is high, and then gets access to PCB engineering parameters such as bore position, minimum hole count and minimum-value aperture.
Please with reference to Fig. 4, for resolving the schematic flow sheet that the Gerber file gets access to the PCB engineering parameter in the method for audit PCB project file automatically among the another embodiment, as shown in Figure 4, the concrete steps among the step S200 comprise:
S250: resolve the Gerber file and obtain PCB negative film element, deletion PCB negative film element;
After parsing Gerber file gets access to the PCB circuit, utilize the polygon difference operation to merge and obtain PCB negative film element, the negative film element is deleted.
S260: choosing a pel is start element; To differ scope into preset minimum search spacing as the search unit with the figure elemental area; The network that search is connected with start element is confirmed as the hunting zone, and the graphic element of detected non-consolidated network, non-dimension line is confirmed as the fault situation;
In the present embodiment; With the start element is that pad is an example; To differ to the scope of preset minimum search spacing (for example, can be 10mil) with bonding pad area and confirm as the hunting zone, whether distance is less than 10mil with the graphic element of non-present networks, non-dimension line in the hunting zone; If then it is confirmed as the fault situation.
S270: will belong to the ascending ordering of the graphic element back screening of fault situation, to get access to the minimum line distance;
To belong to the ascending ordering of graphic element of fault situation, the line that recognizes exposure is selected plug, thereby gets access to real minimum line distance to get rid of line simulator and copper sheet.
Please with reference to Fig. 5, Fig. 5 is the schematic flow sheet of resolving plate-making supporting paper among the another embodiment automatically in the method for audit PCB project file, and step S200 specifically comprises:
S280: travel through literature kit, the plate-making supporting paper that is wherein comprised is resolved to the text of consolidation form;
Owing to description rule, the space of a whole page of each PCB design proposal are different, can there be the plate-making supporting paper of different-format, system need get access to PCB engineering parameter information from the plate-making supporting paper of different-format.When also comprising independent plate-making supporting paper or being embedded in the plate-making supporting paper in the Gerber file in the literature kit that system's traversal receives, collect the PCB engineering parameter information that is comprised in the plate-making supporting paper.In the present embodiment; Earlier the plate-making supporting paper of different-format is converted into the text of consolidation form; Thereby in follow-up step, directly the text of this consolidation form is handled, when this plate-making supporting paper is PDF or picture, utilized OCR (Optical Character Recognition; OCR) technology converts it into Word earlier, and further is converted into text formatting through the Word analytics engine; When this plate-making supporting paper is Word, be converted into text formatting through the Word analytics engine; When this plate-making supporting paper is the Excel form, be converted into text formatting etc. through the Excel analytics engine.
S290: utilize the text of preset universal engineering parameter descriptive language rule base coupling consolidation form to extract the engineering parameter description document, and collect the control information that comprises in the plate-making supporting paper;
Wherein, According to actual conditions, this general engineering parametric description language rule storehouse specifically can include but not limited to industry rule base (wherein can comprise SPEC project codomain key word and connect keyword), industry SPEC item title key word, industry SPEC item codomain key word etc.This rule base can be stored in the storer in the system with specific data layout in advance.Behind system initialization; From storer, call the text of the consolidation form that gets access among the coupling step S280 behind this general engineering parametric description language rule storehouse, for example, can at first utilize the industry rule base that text file is carried out full text and mate; To extract key word; If have synonym in the text, can be translated into the industry standard word earlier, further utilize key word that industry SPEC item title keyword matching collects with after getting access to SPEC project codomain; The choice of judging SPEC project codomain gets access to related data, and related data such as outputting standard SPEC project codomain.In addition, system is also judged in the control of plate-making supporting paper, so that extract correlation engineering parametric description data.When plate-making supporting paper being examined, also support traditional source document audit so that audit is replenished through above step.
After supporting paper gets access to control information and engineering parameter description document from plate-making, control information that coupling plate-making supporting paper is got access to and engineering parameter description document with resolve correlation parameter that the Gerber file gets access to and integrate the engineering audit list of back output display standard, structural drawing etc.
Please, on the basis of previous embodiment, among the another embodiment, before the step of the literature kit that receives user's submission, also comprise with reference to Fig. 6:
S090: preset parameter extracting rule and/or general engineering parametric description language rule storehouse;
In the present embodiment; System can accept user's input preset parameter extracting rule and/or general engineering parametric description language rule storehouse, and Gerber document analysis rule comprises graphic element definition rule, format convention, dedicated rules, formula rule, special algorithm routine package, empirical rule and rules; General engineering parametric description language rule can comprise: industry rule base, industry SPEC item title key word, industry SPEC item codomain key word etc.PCB industry rule base obtains according to SPEC item codomain key word and conjunction key word.Through the step that presets, make to make that the result of audit is more accurate in system undated parameter extracting rule and general engineering parametric description language rule storehouse in time.After system start-up, each rule base has been carried out initialization, receive literature kit and get access to engineering parameter with audit.
The method of automatic audit PCB project file provided by the invention; The file that receives is resolved, is handled and identifies the PCB engineering parameter through rule base; The system that makes can be automatically with exporting the user to after the standardization of PCB engineering parameter; Shorten the time of manual examination and verification, improved the efficient of PCB engineering audit.
Please with reference to Fig. 7, the structural representation of the system of the automatic audit PCB project file that proposes for the present invention, as shown in Figure 7, this system comprises:
Engineering parameter identification module 20 is used for the startup file auditing module, and parameter extraction rule that utilization is preset and/or general engineering parametric description language rule storehouse are resolved said literature kit and got access to the PCB engineering parameter;
Wherein, the parameter extraction rule preestablishes according to the engineering design rule trend of PCB file, makes engineering parameter module 20 utilize this parameter extraction rule after recognizing a certain characteristic of PCB file, can get access to PCB file corresponding engineering parameter.The parameter extraction rule can comprise Gerber document analysis rule and/or general engineering parametric description language library, and Gerber document analysis rule comprises graphic element definition rule, format convention, dedicated rules, formula rule, special algorithm routine package, empirical rule and rules; General engineering parametric description language rule can comprise: industry rule base, industry SPEC item title key word, industry SPEC item codomain key word etc.PCB industry rule base obtains according to SPEC item codomain key word and conjunction key word.After receiving literature kit, engineering parameter acquisition module 20 utilizes the parameter extraction rule that presets that this document bag is discerned, to obtain the PCB engineering parameter.
More concrete, the PCB engineering parameter comprise at least PCB form, layer not, circuit, minimum feature and line-spacing, hole structure, minimum-value aperture, total hole count and size etc.In the present embodiment; When including the Gerber file in the file that the user submits to; After then engineering parameter acquisition module 20 parameter extraction rule parsing Gerber files capable of using obtain the PCB engineering parameter; From each layer extract surround outer-layer circuit and with near the housing of outer-layer circuit loop size as the PCB size; When in the Gerber file, comprising engineering parameter description document (for example, picture, Word, Excel etc.), engineering parameter acquisition module 20 general engineering parametric description also capable of using language coupling Gerber file is to obtain engineering parameter.In other embodiments; Include the Gerber file or the supporting paper of making a plate in the literature kit that the user submits to; Engineering parameter acquisition module 20 utilizes parameter extraction rule and/or general engineering parametric description language resolution file bag according to the file type in the literature kit, gets access to the PCB engineering parameter.
After the resolution file bag gets access to the PCB engineering parameter; Output module 30 is integrated analysis result it (is for example examined single SPEC document, standardized structural drawing for the engineering of standard; Can comprise a layer structure, hole structure and other common structural figure in this standardized structural drawing) after, output shows.
Please with reference to Fig. 8; For the structural representation of engineering parameter identification module in the system that examines the PCB project file among the another embodiment automatically, on the basis of previous embodiment, more concrete; Engineering parameter identification module 20 specifically comprises name recognition unit 21 and Figure recognition unit 22, wherein:
Name recognition unit 21, be used for when the Gerber file be standard when naming, resolve this Gerber file and get access to the PCB layer and do not reach the number of plies;
If the Gerber file that reads has adopted the standard name, name so recognition unit 21 after recognizing the Gerber file according to the Gerber filename, can identify the PCB layer with reference to naming rule and not reach the number of plies.And for the Gerber file that does not adopt the name of standard naming rule, then can't directly get access to the PCB layer and not reach the number of plies.At this moment; Figure recognition unit 22 reads primitive information from the Gerber file; For example; PCB wire characteristic, copper sheet shape, heat radiation aperture, dividing potential drop diagram shape etc., because other function difference of each layer of PCB can comprise different pels, then Figure recognition unit 22 utilizes pattern recognition technique to recognize the PCB number of plies and layer not.
Further; In another embodiment; The engineering parameter acquisition module can also get access to PCB engineering parameters such as PCB boring form, position, hole count and aperture from the Gerber file, please with reference to Fig. 9, be the structural representation of engineering parameter acquisition module among the another embodiment; As shown in Figure 9, this module specifically comprises:
First resolution unit 23 is used to resolve said Gerber file and gets access to the top line regional extent;
Bit cell 24 is used for obtaining primary drilling form and position distribution zone according to the parameter extraction rule with reference to the top line regional extent, and with the contraposition of top layer pad center point;
Drilling parameter acquiring unit 25 is used for getting access to bore position, minimum hole count and minimum-value aperture according to after the definite boring of contraposition success ratio.
Wherein, The parameter extraction rule is according to the corresponding area of the boring coordinate form rule setting of arranging, and first resolution unit 23 is resolved data such as getting access to the top line zone behind the Gerber files, bit cell 24 according to presetting rule with reference to the top line zone; Get access to primary drilling form and position distribution zone; Further, with boring form and position and the contraposition of top layer pad center of gravity tentatively confirmed, contraposition is carried out in the extreme value boring in the chosen position distributed areas usually; As in upper left, the left side, a left side down, in upper right, the right side, right upper and lower in, the boring of middle position down, and add up the contraposition success ratio that each extreme value is holed.
After bit cell 24 counted the contraposition success ratio, boring was confirmed as in the extreme value boring that drilling parameter acquiring unit 25 is high with the contraposition success ratio, and then gets access to PCB engineering parameter data such as bore position, minimum hole count and minimum-value aperture.
More concrete, among the another embodiment, the engineering parameter acquisition module can also get access to minimum line distance and minimum feature from the Gerber file, and with reference to Figure 10, the engineering parameter module specifically comprises:
Negative film element delete cells 26 is used to resolve the Gerber file and obtains PCB negative film element, deletes detected PCB negative film element;
Line-spacing acquiring unit 28 is used for the ascending ordering of fault situation back screening, to get access to the minimum line distance.
After negative film element delete cells 26 parsing Gerber files obtain the PCB circuit, utilize the polygon difference operation to merge and obtain PCB negative film element, further with detected negative film element deletion.Screening unit 27 is example with the start element during for pad; Will with bonding pad area differ into preset minimum search spacing (for example; Can be 10mil) scope confirm as the hunting zone; Whether distance is less than 10mil, if then it is confirmed as the fault situation with the graphic element of non-present networks, non-dimension line in the hunting zone.Line-spacing acquiring unit 28 is with the ascending ordering of fault situation, and the line that recognizes exposure is selected plug, thereby gets access to real minimum line distance to get rid of line simulator and copper sheet.
Please with reference to Figure 11, shown in figure 11 for the structural representation of engineering parameter acquisition module among the another embodiment, in the present embodiment, when receiver module received the literature kit that comprises Gerber file and plate-making supporting paper, the engineering parameter acquisition module also comprised:
Owing to description rule, the space of a whole page of each PCB design proposal are different, can there be the plate-making supporting paper of different-format, system need get access to PCB engineering parameter information from the plate-making supporting paper of different-format.In the present embodiment, when the literature kit that receives when text resolution unit 29a traversal also comprises independent plate-making supporting paper or is embedded in the plate-making supporting paper in the Gerber file, collect the PCB engineering parameter information that is comprised in the plate-making supporting paper.Text resolution unit 29a is converted into the plate-making supporting paper of different-format the text of consolidation form earlier; Thereby in follow-up step, directly the text of this consolidation form is handled; When this plate-making supporting paper is PDF or picture; Text resolution unit 29a utilizes OCR (Optical Character Recognition, OCR) technology to convert it into Word earlier, and further is converted into text formatting through the Word analytics engine; When this plate-making supporting paper was Word, text resolution unit 29a was converted into text formatting through the Word analytics engine; When this plate-making supporting paper was the Excel form, text resolution unit 29a was converted into text formatting etc. through the Excel analytics engine.
Wherein, According to actual conditions, this general engineering parametric description language rule storehouse specifically can include but not limited to industry rule base (wherein can comprise SPEC project codomain key word and connect keyword), industry SPEC item title key word, industry SPEC item codomain key word etc.This rule base can be stored in the storer in the system with specific data layout in advance.Behind system initialization; Matching unit 29b calls the text of the consolidation form that coupling gets access to behind this general engineering parametric description language rule storehouse from storer, for example, matching unit 29b can at first utilize the industry rule base that text file is carried out full text to mate; To extract key word; If have synonym in the text, can be translated into the industry standard word earlier, further utilize key word that industry SPEC item title keyword matching collects with after getting access to SPEC project codomain; The choice of judging SPEC project codomain gets access to related data, and related data such as outputting standard SPEC project codomain.In addition, system is also judged in the control of plate-making supporting paper, so that extract correlation engineering parametric description data.When plate-making supporting paper being examined, also support traditional source document audit so that audit is replenished through above step.
After supporting paper gets access to control information and engineering parameter description document from plate-making, output module 30 will mate control information that plate-making supporting paper gets access to and engineering parameter description document and resolve correlation parameter that the Gerber file gets access to and integrate the engineering of back output display standard and examine list, structural drawing etc.
Please with reference to Figure 12, the structural representation of the system of the automatic audit PCB project file that proposes for another embodiment, shown in figure 12, on the basis of previous embodiment, this system also comprises:
Preset module 40 is used for preset parameter extracting rule and/or general engineering parametric description language rule storehouse;
In the present embodiment; Preset module 40 can be accepted user's input preset parameter extracting rule and/or general engineering parametric description language rule storehouse, and Gerber document analysis rule comprises graphic element definition rule, format convention, dedicated rules, formula rule, special algorithm routine package, empirical rule and rules; General engineering parametric description language rule can comprise: industry rule base, industry SPEC item title key word, industry SPEC item codomain key word etc.PCB industry rule base obtains according to SPEC item codomain key word and conjunction key word.Through the step that presets, make to make that the result of audit is more accurate in system undated parameter extracting rule and general engineering parametric description language rule storehouse in time.After system start-up, each rule base has been carried out initialization, receive literature kit and get access to engineering parameter with audit.
The system of automatic audit PCB project file provided by the invention; The file that receives is resolved, is handled and identifies the PCB engineering parameter through rule base; The system that makes can be automatically with exporting the user to after the standardization of PCB engineering parameter; Shorten the time of manual examination and verification, improved the efficient of PCB engineering audit.
More than be merely preferred embodiment of the present invention,, all any modifications of within spirit of the present invention and principle, being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.
Claims (14)
1. a method of examining the PCB project file automatically is characterized in that, may further comprise the steps:
Receive the literature kit that the user submits to, said literature kit comprises Gerber file and/or plate-making supporting paper;
The startup file auditing module, parameter extraction rule that utilization is preset and/or general engineering parametric description language rule storehouse are resolved said literature kit and are got access to the PCB engineering parameter;
Output shows after integrating analysis result.
2. method according to claim 1 is characterized in that, said engineering parameter comprise PCB form, layer not, circuit, minimum feature and line-spacing, hole structure, minimum-value aperture, total hole count and size.
3. method according to claim 2 is characterized in that, said startup file auditing module is utilized the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprised:
When Gerber file employing standard is named, then resolve said Gerber file and get access to the PCB layer and do not reach the number of plies;
When not employing standard of Gerber file is named, then after reading said Gerber file, utilize the graphics technology to recognize PCB circuit and layer not.
4. method according to claim 2 is characterized in that, said startup file auditing module is utilized the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprised:
Resolve said Gerber file and obtain the top line regional extent, obtain primary drilling form and position distribution zone with reference to said top line regional extent according to said parameter extraction rule, and with the contraposition of top layer pad center point;
After the definite boring of contraposition success ratio, get access to bore position, minimum hole count and minimum-value aperture.
5. method according to claim 2 is characterized in that, said startup file auditing module is utilized the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprised:
Resolve said Gerber file and obtain PCB negative film element, delete said PCB negative film element;
Choosing a pel is start element; To differ scope into preset minimum search spacing as the search unit with the figure elemental area; Search for the network that is connected with start element, and the graphic element of detected non-consolidated network, non-dimension line is confirmed as the fault situation;
To belong to the ascending ordering of the graphic element back screening of fault situation, to get access to the minimum line distance.
6. method according to claim 1 is characterized in that, said startup file auditing module is utilized the parameter extraction rule preset and/or general engineering parametric description language rule storehouse to resolve the step that said literature kit gets access to the PCB engineering parameter and specifically comprised:
Travel through said literature kit, the plate-making supporting paper that is wherein comprised is resolved to the text of consolidation form;
Utilize the text that preset universal engineering parameter descriptive language rule base matees said consolidation form to extract the engineering parameter description document, and collect the control information that is comprised in the plate-making supporting paper.
7. method according to claim 1 is characterized in that, the step that the literature kit that said reception user submits to, said literature kit comprise Gerber file and/or plate-making supporting paper also comprises before:
Preset said parameter extraction rule and/or general engineering parametric description language rule storehouse.
8. automatic system of audit PCB project file is characterized in that this system comprises:
Receiver module is used to receive the literature kit that the user submits to, and said literature kit comprises Gerber file and/or plate-making supporting paper;
The engineering parameter identification module is used for the startup file auditing module, and parameter extraction rule that utilization is preset and/or general engineering parametric description language rule storehouse are resolved said literature kit and got access to the PCB engineering parameter;
Output module is used to integrate that output shows behind the analysis result.
9. system according to claim 8 is characterized in that, said engineering parameter comprise PCB form, layer not, circuit, minimum feature and line-spacing, hole structure, minimum-value aperture, total hole count and size.
10. system according to claim 9 is characterized in that, said engineering parameter identification module specifically comprises:
The name recognition unit is used for when said Gerber file employing standard is named, and then parsing gets access to the PCB layer and do not reach the number of plies;
The Figure recognition unit is used for when not employing standard of said Gerber file is named, and then after reading the Gerber file, utilizes the graphics technology to recognize PCB circuit and layer not.
11. system according to claim 9 is characterized in that, said engineering parameter acquisition module specifically comprises:
First resolution unit is used to resolve said Gerber file and gets access to the top line regional extent;
Bit cell is used for obtaining primary drilling form and position distribution zone according to said parameter extraction rule with reference to said top line regional extent, and with the contraposition of top layer pad center point;
The drilling parameter acquiring unit is used for getting access to bore position, minimum hole count and minimum-value aperture according to after the definite boring of contraposition success ratio.
12. system according to claim 9 is characterized in that, said engineering parameter acquisition module specifically comprises:
Negative film element delete cells is used to resolve said Gerber file and obtains PCB negative film element, deletes said PCB negative film element;
Screening unit; Being used to choose a pel is start element; To differ scope into preset minimum search spacing as the search unit with the figure elemental area, the network that search is connected with start element, and the graphic element of detected non-consolidated network, non-dimension line confirmed as the fault situation;
Minimum line is used for the ascending ordering of the graphic element that belongs to fault situation back screening, to get access to the minimum line distance apart from acquiring unit.
13. system according to claim 8 is characterized in that, said engineering parameter acquisition module also comprises:
The traversal unit is used to travel through said literature kit, is the text of consolidation form with the document analysis that is wherein comprised;
Matching unit utilizes the text that preset universal engineering parameter descriptive language rule base matees said consolidation form to extract the engineering parameter description document, and collects the control information that is comprised in the plate-making supporting paper.
14., it is characterized in that said system also comprises preset module, specifically is used for according to each described system of claim 10 to 13:
Preset said parameter extraction rule and/or general engineering parametric description language rule storehouse.
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