CN101389183A - Through-hole region design system and method for differential signal line - Google Patents
Through-hole region design system and method for differential signal line Download PDFInfo
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- CN101389183A CN101389183A CNA2007101492592A CN200710149259A CN101389183A CN 101389183 A CN101389183 A CN 101389183A CN A2007101492592 A CNA2007101492592 A CN A2007101492592A CN 200710149259 A CN200710149259 A CN 200710149259A CN 101389183 A CN101389183 A CN 101389183A
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- signal line
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- differential signal
- hole region
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Abstract
The invention relates to a through-hole region design system and method for differential signal line, which is applied in layout software for printed circuit board (PCB), comprising firstly selecting a first and a second signal line and reading attribute of the first and second line; subsequently, retrieving a first safe distance and a first through-hole diameter from the first line attribute of the first signal line, and retrieving a second save distance and a second through-hole diameter from the second line attribute of the second signal line; thereafter, computing by special computation rule according to the first safe distance and the first through-hole diameter to obtain a first safe diameter, and computing by special computation rule according to the second safe distance and the second through-hole diameter to obtain a second safe diameter; lastly, setting a layout prohibition region by setting rules according to the first and second safe diameters, so as to prohibit laying the conductive material in the layout prohibition region by the layout software. Therefore, deficiency of unmatched resistance and electromagnetic interference generated in wiring process of the differential signal line is avoided.
Description
Technical field
The present invention relates to a kind of through-hole region designing technique of differential signal line, more specifically relate in order to the through-hole region designing technique of the conductive material in the elimination through-hole region to the interference of differential signal line generation.
Background technology
Along with the continuous research and development of electronics technology with progress greatly, the design of electronic circuit also develops towards high-performance and high-quality common objective in constantly pinpointing the problems and solving.Existing Electronics Engineer finishes by (for example Protel software) in all kinds of printed circuit board wiring softwares usually for the configuration (Layout) of printed circuit board (PCB).In circuit layout process, for the Electronics Engineer, differential signal line is as the convectional signals line frequency of occurrences is very high the most, and differential signal line can for example be applied to CLK, LAN, the USB equisignal line on the motherboard.Because frequency of utilization is quite high, therefore the wiring technique to differential signal line also becomes particularly important.In specific words, because differential signal line is to occur in pairs and require impedance matching, if the impedance matching of not satisfying somewhere at wiring path requires and will cause problems such as loading error occurring, system's instability or transmission error in data, so its wiring path is had relatively high expectations to this differential signal line wiring operation the time, need suitably close when for example laying two differential signal lines and the keeping parallelism of trying one's best, to satisfy the requirement of its impedance matching.
But, although the Electronics Engineer can connect up to differential signal line according to above-mentioned requirements,, accomplish that two differential signal line impedance matchings still are not easy.Differential signal line cabling in circuit board in the wiring software changes layer or when being connected with other electronic components, need do the perforation processing to circuit board.See also Fig. 1, it is a schematic perspective view, state by through-hole region when showing that differential signal line in the wiring software changes layer, as shown in the figure, form differential signal line by first holding wire 1 and secondary signal line 2, first perforation 101 and second perforation 201 via circuit board runs through routing layer 11 and bus plane 13 respectively.
Because there is perforation gap 20 in the zone between two perforations of two differential signal line correspondences, can produce interference to this differential signal line and in this perforation gap 20, have conductive material, for example, has conductive material in the bus plane 13 at these 20 places, perforation gap, also or routing layer 11 has other holding wires, then for the differential signal line that does not have at himself routing layer the interference of its impedance matching etc. to be disturbed as conductive material, in this perforation gap 20, can be subjected to conductive material and disturb, make that the impedance of the differential signal line that impedance and other zones of the differential signal line in this through-hole region are interior is different.
For more clear this through-hole region that presents, see also Fig. 2, it is a floor map, in order to show the form of through-hole region in the wiring software.As shown in the figure, in this through-hole region 5, have perforation gap 20 between this first holding wire 1 and the secondary signal line 2, and the conductive material in this perforation gap 20 can make the impedance of this differential signal line and the impedance of the differential signal line in other zones not match.And because the conductive material of above-mentioned through-hole region, as has a routing layer 11 of other holding wires, can produce electromagnetic interference (EMI) with this differential signal line, thereby influence the transmission quality of this differential signal line, make the differential signal line wiring of originally having relatively high expectations become more difficult.
Therefore, how a kind of through-hole region designing technique of differential signal line is provided, to eliminate conductive material in this through-hole region to the interference that differential signal line produces, to avoid because this disturbs, this differential signal line produces in walking line process that impedance is not complementary and the drawback of electromagnetic interference.
Summary of the invention
Shortcoming in view of above-mentioned prior art, main purpose of the present invention is to provide a kind of through-hole region design system and method for differential signal line, to eliminate conductive material in the through-hole region, avoid this differential signal line to produce in walking line process that impedance is not complementary and the drawback of electromagnetic interference to the interference that differential signal line produces.
For reaching above-mentioned purpose, the invention provides a kind of through-hole region design system and method for differential signal line.The through-hole region design system of differential signal line of the present invention is applied in the wiring software of the printed circuit board (PCB) carried out by data processing equipment, in order to eliminate conductive material in the through-hole region to the interference of the differential signal line generation formed by first and second holding wire, in this wiring software, be provided with the line properties of each holding wire, and this line properties comprises the safe distance between this holding wire and other holding wires at least, and the perforation radius of this holding wire, it mainly comprises: be used to acquisition first safe distance and the first perforation radius in first line properties of this first holding wire, and in second line properties of this secondary signal line the acquisition module of acquisition second safe distance and the second perforation radius; In order to obtain first radius of safety by the computing of certain operations rule, obtain the computing module of second radius of safety by this certain operations rule computing according to this second safe distance and the second perforation radius according to this first safe distance and the first perforation radius; And in order to forbid the regional setting module that connects up by setting rule setting one according to this first and second radius of safety.
The through-hole region design system of the differential signal line by the invention described above, the method for carrying out the through-hole region design of differential signal line of the present invention may further comprise the steps at least: at first, choose first and second holding wire and read first and second line properties; Then, acquisition first safe distance and the first perforation radius in first line properties of this first holding wire, and in second line properties of this secondary signal line, capture second safe distance and the second perforation radius; Then, obtain first radius of safety by the computing of certain operations rule, obtain second radius of safety by this certain operations rule computing according to this second safe distance and the second perforation radius according to this first safe distance and the first perforation radius; At last, forbid the wiring zone by setting rule setting one, to forbid this wiring software this conductive material of laying in this forbids the wiring zone according to this first and second radius of safety.
Wherein, in the through-hole region design system and method for the differential signal line of the invention described above, this certain operations rule be with this first safe distance, and this second safety apart from this first perforation radius, and the second perforation radius addition; This setting rule forms two circles respectively with this first and second radius of safety, and the tangent line of two circles is connected forming a closed figure, runs through this through-hole region with this closed figure and forms this and forbid the wiring zone.
Than existing configuration technology, the through-hole region design system of differential signal line of the present invention and method, mainly be to forbid the wiring zone by through-hole region design one at differential signal line, in forbidding connecting up the zone, this forbids laying this conductive material to make this wiring software, thereby eliminated the interference that the conductive material in this through-hole region produces differential signal line in the prior art, and then overcome because this disturbs, and make this differential signal line produce in walking line process that impedance is not complementary and the shortcoming of electromagnetic interference.
Description of drawings
Fig. 1 is the schematic perspective view by through-hole region when differential signal line changes layer in the existing wiring software;
Fig. 2 is the floor map of through-hole region in the existing wiring software;
Fig. 3 is the block schematic diagram of the through-hole region design system of differential signal line of the present invention;
Fig. 4 is the floor map of the through-hole region design of differential signal line of the present invention;
Fig. 5 is the operation workflow schematic diagram of the through-hole region method for designing of differential signal line of the present invention;
Fig. 6 (A) is that the through-hole region designing technique of differential signal line of the present invention is applied in the wiring software, the effect floor map by the zone of forbidding connecting up when differential signal line changes layer; And
Fig. 6 (B) is that the through-hole region designing technique of differential signal line of the present invention is applied in the wiring software, the effect floor map by the zone of forbidding connecting up when differential signal line is connected with other electronic components.
The main element symbol description
1 first holding wire
2 secondary signal lines
11 routing layers
13 bus planes
101 first perforations
201 second perforations
20 perforation gaps
The through-hole region design system of 3 differential signal lines
4 wiring software
5 through-hole regions
31 acquisition modules
33 computing modules
35 setting modules
131 first safe distances
133 first perforation radiuses
135 first radiuss of safety
231 second safe distances
233 second perforation radiuses
235 second radiuss of safety
6 forbid the wiring zone
The S1-S7 step
Embodiment
Below be that those skilled in the art can understand other advantages of the present invention and effect easily by the content that this specification disclosed by specific instantiation explanation embodiments of the present invention.The present invention also can be implemented or be used by other different instantiations, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
Seeing also Fig. 3, is a block schematic diagram, and it shows the block schematic diagram of the through-hole region design system of differential signal line of the present invention.The through-hole region design system 3 of differential signal line of the present invention, be applied to by as PC, notebook computer, in the wiring software 4 of the printed circuit board (PCB) that data processing equipments such as work station are carried out, in the through-hole region for example is copper in order to eliminate, conductive material such as gold or copper-gold alloy is to by first and the interference that produces of the differential signal line formed of holding wire 1 secondary signal line 2, in this wiring software 4 used all kinds of printed circuit board wiring softwares when being Electronics Engineers for the configuration of printed circuit board (PCB), in present embodiment, be example with Protel software, be provided with the line properties (net) of each holding wire in this wiring software 4, and this line properties comprises the safe distance between this holding wire and other holding wires at least, and the perforation radius of this holding wire, the through-hole region design system 3 of this differential signal line comprises at least: acquisition module 31, computing module 33 and setting module 35.
Be the through-hole region design system of bright differential signal line of the present invention more particularly, please consult Fig. 3 in conjunction with Fig. 4, Fig. 4 is a floor map, in order to the floor map of the through-hole region design that shows differential signal line of the present invention in the wiring software.
This acquisition module 31, after the user utilizes above-mentioned wiring software 4 to choose this first holding wire 1 and secondary signal line 2, read and obtain first line properties corresponding and second line properties corresponding with this secondary signal line 2 with this first holding wire 1, and in this first line properties, capture first safe distance 131 and the first perforation radius 133, and in this second line properties, capture second safe distance 231 and the second perforation radius 233.
This computing module 33 obtains first radius of safety 135 according to this first safe distance 131 and the first perforation radius 133 by the computing of certain operations rule; Obtain second radius of safety 235 according to this second safe distance 231 and the second perforation radius 233 by this certain operations rule computing, wherein, this certain operations rule with this first safe distance 131, and this second safe distance 231 and this first perforation radius 133, and the second perforation radius 233 make sum operation.
This setting module 35 is forbidden wiring zone 6 according to this first radius of safety 135 and second radius of safety 235 by setting rule setting one, forbids laying this conductive material to make this wiring software 4 in this forbids wiring zone 6.Wherein, this setting rule forms two circles respectively with this first radius of safety 155 and second radius of safety 255, and the tangent line of two circles is connected to form a closed figure, and this forbids wiring zone 6 to run through these through-hole region 5 formation with this closed figure.
Seeing also Fig. 5, is a flow process schematic diagram, and it shows the operation workflow schematic diagram of the through-hole region method for designing of differential signal line of the present invention.The through-hole region method for designing of differential signal line of the present invention, be applied in the through-hole region design system of above-mentioned differential signal line, in order to eliminate conductive material in the through-hole region 5 to by first and the interference of the differential signal line generation formed of holding wire 1 secondary signal line 2, in wiring software 4, be provided with the line properties (net) of each holding wire, and this line properties comprises the safe distance between this holding wire and other holding wires at least, and the perforation radius of this holding wire, the through-hole region method for designing of this differential signal line may further comprise the steps at least: at first, carry out step S1, choose first holding wire 1 and secondary signal line 2 and read first and second line properties; Then, proceed to step S3.
In step S3, acquisition first safe distance 131 and the first perforation radius 133 in first line properties of this first holding wire 1, and in second line properties of this secondary signal line 2, capture second safe distance 231 and the second perforation radius 233; Then, proceed to step S5.
In step S5, this first safe distance 131 is obtained first radius of safety 135 with these first perforation radius, 133 sum operation, and this second safe distance 231 is obtained second radius of safety 235 with these second perforation radius, 233 sum operation; At last, proceed to step S7.
In step S7, forbid the wiring zone according to this first radius of safety 135 and second radius of safety 235 by setting rule setting one, in forbidding connecting up the zone, this forbids laying this conductive material to make this wiring software 4.Wherein, this setting rule is to form two circles respectively with this first radius of safety 155 and second radius of safety 255, and the tangent line of two circles is connected to form a closed figure, and this forbids wiring zone 6 to run through these through-hole region 5 formation with this closed figure.
See also Fig. 6 (a) and Fig. 6 (b), Fig. 6 (a) is applied in the wiring software in order to through-hole region design system and the method that shows differential signal line of the present invention, the effect floor map by the zone of forbidding connecting up when differential signal line changes layer; And Fig. 6 (b) is applied in the wiring software in order to through-hole region design system and the method that shows differential signal line of the present invention, the effect floor map by the zone of forbidding connecting up when differential signal line is connected with other electronic components.
Shown in Fig. 6 (a), the part of this first perforation 101 of process and second perforation 201 was in this and forbids in the wiring zone 6 when zone 6 was located at this first holding wire 1 and this secondary signal line 2 and is changed layer because this forbids connecting up, make this wiring software 4 other cablings in this forbids connecting up zone 6 avoid, and no any conductive material in this forbids wiring zone 6 produces in walking line process that impedance is not complementary and the shortcoming of electromagnetic interference so can overcome this differential signal line.Same, shown in Fig. 6 (b), because this forbids wiring zone 6, make differential signal line be not subjected to when being connected with other electronic components these through-hole region 5 memory bodys the interference of conductive material, produce in walking line process that impedance is not complementary and the shortcoming of electromagnetic interference so can overcome this differential signal line.
In sum, the through-hole region design system of differential signal line of the present invention and method, mainly be to forbid the wiring zone by through-hole region design one at differential signal line, in forbidding connecting up the zone, this forbids laying this conductive material to make this wiring software, thereby eliminated the interference that the conductive material in this through-hole region produces differential signal line in the prior art, avoided because this disturbs, this differential signal line produces in walking line process that impedance is not complementary and the drawback of electromagnetic interference.
The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, the scope of the present invention, the claim scope is listed as described later.
Claims (6)
1. the through-hole region design system of a differential signal line, be applied in the wiring software of the printing board PCB carried out by data processing equipment, in order to eliminate the interference that differential signal line produced of conductive material in the through-hole region to forming by first and second holding wire, in this wiring software, be provided with the line properties of each holding wire, and this line properties comprises the safe distance between this holding wire and other holding wires and the perforation radius of this holding wire at least, and the through-hole region design system of this differential signal line includes:
Acquisition module is used to acquisition first safe distance and the first perforation radius in first line properties of this first holding wire, and in second line properties of this secondary signal line acquisition second safe distance and the second perforation radius;
Computing module in order to obtaining first radius of safety according to this first safe distance and the first perforation radius by the computing of certain operations rule, and obtains second radius of safety according to this second safe distance and the second perforation radius by this certain operations rule computing; And
Setting module is in order to forbid the wiring zone according to this first and second radius of safety and by setting rule setting one, to forbid this wiring software this conductive material of laying in this forbids the wiring zone.
2. the through-hole region design system of differential signal line according to claim 1, wherein, this certain operations rule be meant with this first safe distance, and this second safety apart from this first perforation radius, and the second perforation radius addition.
3. the through-hole region design system of differential signal line according to claim 1, wherein, this setting rule is meant with this first and second radius of safety and forms two circles respectively, and the tangent line of this two circle is connected to form a closed figure, run through this through-hole region with this closed figure again and forbid the wiring zone to form this.
4. the through-hole region method for designing of a differential signal line, be applied in the wiring software of the printing board PCB carried out by data processing equipment, in order to eliminate conductive material in the through-hole region to the interference of the differential signal line generation formed by first and second holding wire, in this wiring software, be provided with the line properties of each holding wire, and this line properties comprises the safe distance between this holding wire and other holding wires and the perforation radius of this holding wire at least, and the through-hole region method for designing of this differential signal line may further comprise the steps at least:
(1) chooses this first and second holding wire, and in first line properties of this first holding wire, capture first safe distance and the first perforation radius, and in second line properties of this secondary signal line, capture second safe distance and the second perforation radius;
(2) obtain first radius of safety according to this first safe distance and the first perforation radius by the computing of certain operations rule, and obtain second radius of safety by this certain operations rule computing according to this second safe distance and the second perforation radius; And
(3) forbid the wiring zone according to this first and second radius of safety and by setting rule setting one, to forbid this wiring software this conductive material of laying in this forbids the wiring zone.
5. the through-hole region method for designing of differential signal line according to claim 4, wherein, this certain operations rule be meant with this first safe distance with this first perforation radius, and this second safety apart from and this second perforation radius addition.
6. the through-hole region method for designing of differential signal line according to claim 4, wherein, this setting rule is meant with this first and second radius of safety and forms two circles respectively, and the tangent line of this two circle is connected forming a closed figure, and runs through this through-hole region with this closed figure and forbid the wiring zone to form this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101492592A CN101389183A (en) | 2007-09-10 | 2007-09-10 | Through-hole region design system and method for differential signal line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101492592A CN101389183A (en) | 2007-09-10 | 2007-09-10 | Through-hole region design system and method for differential signal line |
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| CN101389183A true CN101389183A (en) | 2009-03-18 |
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| CNA2007101492592A Pending CN101389183A (en) | 2007-09-10 | 2007-09-10 | Through-hole region design system and method for differential signal line |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667499A (en) * | 2009-12-02 | 2012-09-12 | 惠普发展公司，有限责任合伙企业 | Signal sensing devices and circuit boards |
| CN102892249A (en) * | 2012-08-27 | 2013-01-23 | 广东欧珀移动通信有限公司 | Processing method for single-point grounding of printed circuit board (PCB) |
| CN103761100A (en) * | 2014-01-24 | 2014-04-30 | 浪潮(北京)电子信息产业有限公司 | Method and system for quickly drawing wiring prohibition areas around differential-signal via holes |
| CN106211579A (en) * | 2016-06-28 | 2016-12-07 | 广东欧珀移动通信有限公司 | The PCB of mobile terminal walks wire system, method and computer equipment |
| CN106257232A (en) * | 2015-06-18 | 2016-12-28 | 牧德科技股份有限公司 | Detection method and detection equipment for hole site information of printed circuit board |
| CN107220442A (en) * | 2017-05-31 | 2017-09-29 | 郑州云海信息技术有限公司 | A kind of difference through hole for PCB is to detection instrument |
| CN107679303A (en) * | 2017-09-21 | 2018-02-09 | 郑州云海信息技术有限公司 | A kind of detection preventing collision method of crystal oscillator downward cabling and via |
| CN114266218A (en) * | 2021-12-24 | 2022-04-01 | 麦田能源有限公司 | PCB layout and wiring method and device |
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2007
- 2007-09-10 CN CNA2007101492592A patent/CN101389183A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667499A (en) * | 2009-12-02 | 2012-09-12 | 惠普发展公司，有限责任合伙企业 | Signal sensing devices and circuit boards |
| CN102667499B (en) * | 2009-12-02 | 2015-11-25 | 惠普发展公司，有限责任合伙企业 | Signal sensing device and circuit board |
| US9234915B2 (en) | 2009-12-02 | 2016-01-12 | Hewlett Packard Enterprise Development Lp | Signal sensing device and circuit boards |
| CN102892249A (en) * | 2012-08-27 | 2013-01-23 | 广东欧珀移动通信有限公司 | Processing method for single-point grounding of printed circuit board (PCB) |
| CN103761100A (en) * | 2014-01-24 | 2014-04-30 | 浪潮(北京)电子信息产业有限公司 | Method and system for quickly drawing wiring prohibition areas around differential-signal via holes |
| CN106257232A (en) * | 2015-06-18 | 2016-12-28 | 牧德科技股份有限公司 | Detection method and detection equipment for hole site information of printed circuit board |
| CN106257232B (en) * | 2015-06-18 | 2019-02-22 | 牧德科技股份有限公司 | Detection method and detection equipment for hole site information of printed circuit board |
| CN106211579A (en) * | 2016-06-28 | 2016-12-07 | 广东欧珀移动通信有限公司 | The PCB of mobile terminal walks wire system, method and computer equipment |
| CN106211579B (en) * | 2016-06-28 | 2019-03-19 | Oppo广东移动通信有限公司 | Alignment system, method and the computer equipment of the PCB of mobile terminal |
| CN107220442A (en) * | 2017-05-31 | 2017-09-29 | 郑州云海信息技术有限公司 | A kind of difference through hole for PCB is to detection instrument |
| CN107679303A (en) * | 2017-09-21 | 2018-02-09 | 郑州云海信息技术有限公司 | A kind of detection preventing collision method of crystal oscillator downward cabling and via |
| CN114266218A (en) * | 2021-12-24 | 2022-04-01 | 麦田能源有限公司 | PCB layout and wiring method and device |
| CN114266218B (en) * | 2021-12-24 | 2023-02-14 | 麦田能源有限公司 | PCB layout and wiring method and device |
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Open date: 20090318 |