CN107220442A - A kind of difference through hole for PCB is to detection instrument - Google Patents
A kind of difference through hole for PCB is to detection instrument Download PDFInfo
- Publication number
- CN107220442A CN107220442A CN201710399889.9A CN201710399889A CN107220442A CN 107220442 A CN107220442 A CN 107220442A CN 201710399889 A CN201710399889 A CN 201710399889A CN 107220442 A CN107220442 A CN 107220442A
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- China
- Prior art keywords
- differential signal
- difference
- signal line
- hole
- measured
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
Abstract
The invention discloses a kind of difference through hole for PCB to detection instrument, including differential signal line searching modul, the identifier of the differential signal line to be measured for receiving user's input；Searched according to identifier from default wiring database and obtain differential signal line to be measured；Dimension information extraction module, the dimension informations of corresponding a pair of the difference through holes of each pair differential signal line to be measured is obtained for extracting and calculating from pcb board；Size data storage storehouse, for preserving above-mentioned dimension information, via inspection is carried out for follow-up.The present invention can be automatically performed the acquisition of the dimension information of some lookups to differential signal line and corresponding difference through hole pair, save manpower, and detection speed is fast, and accuracy is high, and avoids missing inspection as far as possible.
Description
Technical field
The present invention relates to wiring detection technique field, more particularly to a kind of difference through hole for PCB is to detection
Instrument.
Background technology
It is inner in cloud computing product (server, memory etc.), the signal wire transmission speed on the board such as its mainboard, High speed rear panel
Rate is more and more faster, and more and more higher is required for signal impedance is successional.Because transmission line runs into via, impedance can be reduced, because
This can cause transmission line discontinuous with through hole impedance, cause SI (Signal Integrity, the signal integrity) problems such as reflection.
In order to keep signal impedance continuity, SI engineer can optimize for through hole impedance, and provide difference for wiring installation teacher
The dimensions of via, wiring installation teacher needs to be connected up according to obtained dimensions, to realize the resistance to difference through hole
Anti- control.
In order to ensure to connect up set according to the dimensions, therefore after the completion of wiring, to carry out strict wiring inspection
Look into.Because high-speed line is many on plank, used stacking is also increasingly thicker, causes difference through hole service condition a lot.And
Current test mode is artificial progress, that is, needs to check the size of each pair difference through hole one by one manually, so not only time-consuming
Arduously, detection accuracy is low, has been also easy to the appearance of missing inspection situation.
Therefore, a kind of manpower, inspection difference through hole for PCB that speed is fast and accuracy is high saved how is provided to inspection
Survey instrument is the problem of those skilled in the art need solution at present.
The content of the invention
It is an object of the invention to provide a kind of difference through hole for PCB to detection instrument, it is some right to be automatically performed
The acquisition of the dimension information of the lookup of differential signal line and corresponding difference through hole pair, saves manpower, and detection speed is fast, accurately
Property it is high, and avoid missing inspection as far as possible.
In order to solve the above technical problems, the invention provides a kind of difference through hole for PCB to detection instrument, including：
Differential signal line searching modul, some identifiers for treating survey differential signal line for receiving user's input；According to
Searched according to the identifier from default wiring database and obtain the differential signal line to be measured；
Dimension information extraction module, differential signal line pair to be measured described in each pair is obtained for extracting and calculating from pcb board
The dimension information for a pair of the difference through holes answered；
Size data storage storehouse, for preserving the dimension information, via inspection is carried out for follow-up.
Preferably, in addition to：
Document creation module, is shown for the dimension information to be generated into document, and sent to display interface.
Preferably, in addition to：
Module is checked, for the difference through hole dimensions of the dimension information and the default pcb board to be compared
Compared with checking whether the difference through hole for occurring setting mistake, and generate inspection result report and send to display interface and shown.
Preferably, the dimension information extraction module is specifically included：
Information extraction unit, hole drill is crossed for extract corresponding a pair of the difference through holes of differential signal line to be measured described in each pair
Bore dia, via pad diameter, via anti-pad diameter, the centre coordinate of via and the section information of difference through hole connection；
Information calculating unit, for the via information extracted according to described information extraction unit, calculates a pair of difference through holes
The spacing at center, the center of difference through hole and the spacing at the center in corresponding reference ground hole, the stub length of via.
Preferably, the differential signal line searching modul is specifically included：
First receiving unit, the key character of the differential signal line to be measured for receiving user's input；
First searching unit, multipair difference is obtained for being searched according to the key character from the default wiring database
Sub-signal line；
Screening unit, the selection instruction for receiving user's input, according to the selection instruction from obtained multipair difference
Selected in signal wire it is some differential signal line is chosen, choose it is some be the difference to be measured letter to differential signal line
Number line.
Preferably, the differential signal line searching modul also includes：
Second receiving unit, the title of a pair of differential signal lines to be measured for receiving user's input；
Second searching unit, obtains described treating error of measurement for searching from the default wiring database according to the title
Sub-signal line.Difference through hole for PCB is to detection instrument
The invention provides a kind of difference through hole for PCB to detection instrument, including for searching determination difference to be measured
The differential signal line searching modul of signal wire, for each pair differential signal line to be measured corresponding one to be extracted and calculated from pcb board
Dimension information extraction module to the dimension information of difference through hole and the size data storage storehouse for storing the dimension information.
It can be seen that, by the detection instrument of the present invention, user only needs to input the identifier for the differential signal line for wanting inspection, you can obtain
The dimension information of corresponding one or more pairs of difference through holes carries out subsequent examination, compared to the side for manually checking via size one by one
Formula, detection instrument of the invention not only saves manpower and detection time, substantially increases detection efficiency, and compared to artificial side
Formula, accuracy is high, and automaticity is high, and substantially avoided the situation for missing inspection occur.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of high-speed differential via；
Fig. 2 is a kind of structural representation of the difference through hole for PCB of the invention provided to detection instrument.
Embodiment
The core of the present invention is to provide a kind of difference through hole for PCB to detection instrument, and it is some right to be automatically performed
The acquisition of the dimension information of the lookup of differential signal line and corresponding difference through hole pair, saves manpower, and detection speed is fast, accurately
Property it is high, and avoid missing inspection as far as possible.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The invention provides a kind of difference through hole inspection for PCB (Printed Circuit Board, printed circuit board (PCB))
Survey instrument, shown in Figure 2, structural representations of the Fig. 2 for a kind of difference through hole for PCB of the invention provided to detection instrument
Figure.The detection kit is included：
Differential signal line searching modul 1, the identifier of the differential signal line to be measured for receiving user's input；According to mark
Symbol is searched from default wiring database and obtains differential signal line to be measured；
Dimension information extraction module 2, for extracting and calculating from pcb board, to obtain each pair differential signal line to be measured corresponding
The dimension information of a pair of difference through holes；
Size data storage storehouse 3, for preserving above-mentioned dimension information, via inspection is carried out for follow-up.
It is understood that in wiring process, wiring installation teacher is the dimensions according to the difference through hole optimized
Connected up, this dimensions ensure that the continuity of signal impedance, therefore by detecting the chi of a pair of difference through holes
Whether very little information is accurate, whether can determine the wiring on actual pcb board in strict accordance with default dimensions, once both
There is error, then demonstrate the need for being improved, otherwise may cause through hole impedance discontinuous situation, therefore difference mistake occur
The inspection of the dimension information in hole is the major part of the impedance control of via.
In an advantageous embodiment, the detection instrument also includes：
Document creation module 4, is shown for dimension information to be generated into document, and sent to display interface.
I.e. now, it is compared, i.e., by user according to the document content of display with default difference through hole dimensions
It can be determined whether mistake occur, and corrected.In addition, document here can be text document or EXCEL document, the present invention
The type of document is not limited.
In another preferred embodiment, the detection instrument also includes：
Module 5 is checked, for the difference through hole dimensions of dimension information and default pcb board to be compared, is checked
Whether appearance sets the difference through hole of mistake, and generates inspection result report and send to display interface and shown.
I.e. by setting algorithm, it is compared via size information and the difference through hole dimensions of default pcb board,
To realize the automatic purpose for checking dimensional error, manual operation can further be reduced by checking the foundation of module 5, improve via inspection
The efficiency and accuracy looked into.
It should be noted that in above process, checking that module 5 needs to connect according to differential signal line searching modul 1 first
The identifier of receipts searches the corresponding difference through hole dimensions of the differential signal line to be measured from default Specifications Database.
Shown in Figure 1, Fig. 1 is the structural representation of high-speed differential via.
Specifically, dimension information extraction module 2 is specifically included：
Information extraction unit, the hole drilling excessively for extracting corresponding a pair of the difference through holes of each pair differential signal line to be measured is straight
Footpath (Drill Diameter), via pad diameter (Pad Diameter), via anti-pad diameter (Anti-pad
Diameter), the centre coordinate of via and the section information of difference through hole connection；
Information calculating unit, for the via information extracted according to information extraction unit, is calculated in a pair of difference through holes
The spacing (Sig_Sig_Spacing) of the heart, the spacing (Sig_GND_ at the center of difference through hole and the center in corresponding reference ground hole
Spacing), the stub length (Via_Stub) of via.
It is understood that via stub refers to it being untapped part on via.Via pad is circular pad,
Via is connected to top or internal transmission line by them.Further, since two vias of differential pair are apart from close, two vias are total to
One oval separator can reduce parasitic capacitance, rather than use two single separators.Each difference through hole
Side is provided with a reference ground hole, so as to provide ground connection return path for two difference through holes.
It is further known that, differential signal line searching modul 1 is specifically included：
First receiving unit, the key character of the differential signal line to be measured for receiving user's input；
First searching unit, multipair differential signal is obtained for being searched according to key character from default wiring database
Line；
Screening unit, the selection instruction for receiving user's input, according to selection instruction from obtained multipair differential signal
Selected in line it is some differential signal line is chosen, choose it is some be differential signal line to be measured to differential signal line.
Preferably, differential signal line searching modul 1 also includes：
Second receiving unit, the title of a pair of differential signal lines to be measured for receiving user's input；
Second searching unit, differential signal line to be measured is obtained for being searched according to title from default wiring database.
It is understood that wiring installation teacher using layout instruments during being connected up, can be to each bars
Line carries out the setting of title, and these titles can be preserved in default wiring database in systems.Therefore, direct lookup names can
To improve the accuracy searched, the differential signal line so screened is differential signal line to be measured.
But the title for being due to differential signal line may be long, and staff may forget whole names of differential signal line
Claim, and hence it is also possible to only the key character of input differential signal line (key character refers to using in the title of differential signal line
In the partial character for distinguishing each differential signal line) screened, but the result so screened may not accurate enough, meeting
The content of differential signal line to be measured is not belonging to comprising part, now then needs user to input selection instruction, from the selection result only
Choose the content in differential signal line to be measured.
In specific implementation, display interface could be arranged to after two windows, input key character, the selection result meeting
It is shown in the left window, user can drag differential signal line therein to right side window, and differential signal line to be measured is dragged
To right side window, the OK button set on display interface is clicked on, completion is as chosen.Certainly, it these are only a kind of specific reality
Existing mode, the present invention does not limit the specific set-up mode of display interface.
In addition, differential signal line searching modul 1 can include whole units set forth above, or only received comprising first
Unit, the first searching unit and screening unit, or the second receiving unit and the second searching unit are only included, specifically using which kind of reality
The existing mode present invention is not construed as limiting.
In addition, the present invention can be developed using CadenceSKILL language, do not limited certainly to this.
Each embodiment in the present invention can be combined using any-mode, and the scheme after combination is also in the guarantor of the present invention
Within the scope of shield.
The invention provides a kind of difference through hole for PCB to detection instrument, including for searching determination difference to be measured
The differential signal line searching modul of signal wire, for each pair differential signal line to be measured corresponding one to be extracted and calculated from pcb board
Dimension information extraction module to the dimension information of difference through hole and the size data storage storehouse for storing the dimension information.
It can be seen that, by the detection instrument of the present invention, user only needs to input the identifier for the differential signal line for wanting inspection, you can obtain
The dimension information of corresponding one or more pairs of difference through holes carries out subsequent examination, compared to the side for manually checking via size one by one
Formula, detection instrument of the invention not only saves manpower and detection time, substantially increases detection efficiency, and compared to artificial side
Formula, accuracy is high, and automaticity is high, and substantially avoided the situation for missing inspection occur.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of the method or algorithm that the embodiments described herein is described with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In the storage medium of any other forms well known in field.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (6)
1. a kind of difference through hole for PCB is to detection instrument, it is characterised in that including：
Differential signal line searching modul, some identifiers for treating survey differential signal line for receiving user's input；According to institute
State identifier and searched from default wiring database and obtain the differential signal line to be measured；
Dimension information extraction module, for extracting and calculating from pcb board, to obtain differential signal line to be measured described in each pair corresponding
The dimension information of a pair of difference through holes；
Size data storage storehouse, for preserving the dimension information, via inspection is carried out for follow-up.
2. detection instrument according to claim 1, it is characterised in that also include：
Document creation module, is shown for the dimension information to be generated into document, and sent to display interface.
3. detection instrument according to claim 1, it is characterised in that also include：
Module is checked, for the difference through hole dimensions of the dimension information and the default pcb board to be compared, inspection
The difference through hole whether occurring, mistake is set is looked into, and generates inspection result report transmission to display interface and is shown.
4. the detection instrument according to claim any one of 1-3, it is characterised in that the dimension information extraction module is specific
Including：
Information extraction unit, for extract corresponding a pair of the difference through holes of differential signal line to be measured described in each pair to cross hole drilling straight
The section information that footpath, via pad diameter, via anti-pad diameter, the centre coordinate of via and difference through hole are connected；
Information calculating unit, for the via information extracted according to described information extraction unit, is calculated in a pair of difference through holes
The spacing of the heart, the center of difference through hole and the spacing at the center in corresponding reference ground hole, the stub length of via.
5. detection instrument according to claim 1, it is characterised in that the differential signal line searching modul is specifically included：
First receiving unit, the key character of the differential signal line to be measured for receiving user's input；
First searching unit, multipair difference letter is obtained for being searched according to the key character from the default wiring database
Number line；
Screening unit, the selection instruction for receiving user's input, according to the selection instruction from obtained multipair differential signal
Selected in line it is some differential signal line is chosen, choose it is some be the differential signal to be measured to differential signal line
Line.
6. detection instrument according to claim 5, it is characterised in that the differential signal line searching modul also includes：
Second receiving unit, the title of a pair of differential signal lines to be measured for receiving user's input；
Second searching unit, the difference letter to be measured is obtained for being searched according to the title from the default wiring database
Number line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399889.9A CN107220442A (en) | 2017-05-31 | 2017-05-31 | A kind of difference through hole for PCB is to detection instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399889.9A CN107220442A (en) | 2017-05-31 | 2017-05-31 | A kind of difference through hole for PCB is to detection instrument |
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| CN107220442A true CN107220442A (en) | 2017-09-29 |
Family
ID=59948283
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| CN201710399889.9A Pending CN107220442A (en) | 2017-05-31 | 2017-05-31 | A kind of difference through hole for PCB is to detection instrument |
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Cited By (9)
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|---|---|---|---|---|
| CN109558683A (en) * | 2018-12-03 | 2019-04-02 | 上海泽丰半导体科技有限公司 | A kind of data information input method and system based on Via Wizard software |
| CN109740272A (en) * | 2019-01-09 | 2019-05-10 | 郑州云海信息技术有限公司 | The inspection method and relevant apparatus of inductive compensation in a kind of PCB |
| CN110582161A (en) * | 2019-07-19 | 2019-12-17 | 苏州浪潮智能科技有限公司 | automatic inspection method and device based on PCB via hole reverse bonding pad |
| CN110677996A (en) * | 2019-09-12 | 2020-01-10 | 无锡江南计算技术研究所 | Spacer disc design method and system based on Allegro software |
| CN112747663A (en) * | 2020-12-11 | 2021-05-04 | 浪潮电子信息产业股份有限公司 | Method, device and system for detecting differential via hole reverse pad hollowed-out size |
| CN112906343A (en) * | 2019-11-19 | 2021-06-04 | 英业达科技有限公司 | Automatic inspection method for pin position and drilling hole of differential signal line |
| CN113993281A (en) * | 2021-09-24 | 2022-01-28 | 苏州浪潮智能科技有限公司 | PCB differential via hole design method and PCB design method |
| CN114071857A (en) * | 2020-08-05 | 2022-02-18 | 深南电路股份有限公司 | Circuit board |
| CN114184933A (en) * | 2021-11-26 | 2022-03-15 | 浪潮(北京)电子信息产业有限公司 | Backflow ground hole detection method, system, device and computer readable storage medium |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109558683A (en) * | 2018-12-03 | 2019-04-02 | 上海泽丰半导体科技有限公司 | A kind of data information input method and system based on Via Wizard software |
| CN109558683B (en) * | 2018-12-03 | 2020-12-15 | 上海泽丰半导体科技有限公司 | Data information input method and system based on Via Wizard software |
| CN109740272B (en) * | 2019-01-09 | 2022-03-08 | 郑州云海信息技术有限公司 | PCB (printed circuit board) inductivity compensation checking method and related device |
| CN109740272A (en) * | 2019-01-09 | 2019-05-10 | 郑州云海信息技术有限公司 | The inspection method and relevant apparatus of inductive compensation in a kind of PCB |
| CN110582161A (en) * | 2019-07-19 | 2019-12-17 | 苏州浪潮智能科技有限公司 | automatic inspection method and device based on PCB via hole reverse bonding pad |
| CN110677996A (en) * | 2019-09-12 | 2020-01-10 | 无锡江南计算技术研究所 | Spacer disc design method and system based on Allegro software |
| CN112906343A (en) * | 2019-11-19 | 2021-06-04 | 英业达科技有限公司 | Automatic inspection method for pin position and drilling hole of differential signal line |
| CN114071857A (en) * | 2020-08-05 | 2022-02-18 | 深南电路股份有限公司 | Circuit board |
| CN114071857B (en) * | 2020-08-05 | 2024-04-05 | 深南电路股份有限公司 | Circuit board |
| CN112747663A (en) * | 2020-12-11 | 2021-05-04 | 浪潮电子信息产业股份有限公司 | Method, device and system for detecting differential via hole reverse pad hollowed-out size |
| CN112747663B (en) * | 2020-12-11 | 2023-06-02 | 浪潮电子信息产业股份有限公司 | Method, device and system for detecting hollowed-out size of differential via anti-bonding pad |
| CN113993281A (en) * | 2021-09-24 | 2022-01-28 | 苏州浪潮智能科技有限公司 | PCB differential via hole design method and PCB design method |
| CN113993281B (en) * | 2021-09-24 | 2023-08-22 | 苏州浪潮智能科技有限公司 | PCB differential via hole design method and PCB design method |
| CN114184933A (en) * | 2021-11-26 | 2022-03-15 | 浪潮(北京)电子信息产业有限公司 | Backflow ground hole detection method, system, device and computer readable storage medium |
| CN114184933B (en) * | 2021-11-26 | 2024-04-05 | 浪潮(北京)电子信息产业有限公司 | Method, system, device and computer readable storage medium for detecting backflow ground hole |
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Application publication date: 20170929 |