CN107589300A - A kind of line impedance detection method, system, device and readable storage medium storing program for executing - Google Patents
A kind of line impedance detection method, system, device and readable storage medium storing program for executing Download PDFInfo
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- CN107589300A CN107589300A CN201710867522.5A CN201710867522A CN107589300A CN 107589300 A CN107589300 A CN 107589300A CN 201710867522 A CN201710867522 A CN 201710867522A CN 107589300 A CN107589300 A CN 107589300A
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Abstract
This application discloses a kind of line impedance detection method, including：The Impedance measurement curve of the line impedance measurement data composition is obtained by impedance instrument；It is starting point to set the measured value that first trough rises at half on the Impedance measurement curve, and the measured value that end region rises at half on the measurement impedance curve is terminal；Confirm from the starting point to the impedance measurement data in the terminal section to be the first impedance measurement data；Average value of first impedance measurement data in regulation span is calculated, obtains the first evaluation and test value；Judge the first evaluation and test value whether in the range of specified impedance.By the algorithm in the present invention, accurate line impedance value can be obtained, the short-circuit conditions of opening of circuit are determined how using the line impedance value, compared with prior art, finer line condition analysis result can be obtained by specific impedance value.Disclosed herein as well is line impedance detecting system, device and readable storage medium storing program for executing.
Description
Technical field
The present invention relates to electronic circuit, more particularly to a kind of line impedance detection method, system, device and readable storage medium
Matter.
Background technology
Conductance circuit is one of hardware important in electronic technology, is worked typically in the form of wire harness or integrated circuit board.
With the development of electronic technology, for the quality requirement more and more higher of electronic circuit, its line impedance is to examine line quality
One important parameter.The detection method of circuit includes open-short circuit, flying probe etc. at present, and these methods can obtain overall wire
The impedance value on road, but algorithm is not accurate enough, can only judge that general circuit opens short-circuit conditions according to obtained impedance value, for tool
For the impedance value size of body circuit, reliability is not high.
The content of the invention
In view of this, it is an object of the invention to provide one kind can relatively accurately line impedance detection method, system,
Device and readable storage medium storing program for executing.Its concrete scheme is as follows：
A kind of line impedance detection method, including：
Testing impedance is carried out to the circuit by impedance instrument, obtains the survey of the line impedance measurement data composition
Try impedance curve；
The measured value for setting on the Impedance measurement curve first trough to rise at half is starting point, the measurement impedance
The measured value that end region rises at half on curve is terminal；
Confirm on the Impedance measurement curve to be first from the starting point to the impedance measurement data in the terminal section
Impedance measurement data；
Average value of first impedance measurement data in regulation span is calculated, obtains the first evaluation and test value；
The first evaluation and test value is judged whether in the range of specified impedance, if it is, judge that the line impedance is qualified,
If it is not, then judge that the line impedance is unqualified.
Preferably, the circuit includes differential impedance line.
Preferably, the regulation span of the differential impedance line of the length less than 10mm is 30%-70%；
The regulation span of the differential impedance line of the length not less than 10mm is 50%-70%.
Preferably, the detection method also includes：
When the circuit includes the part of path of multistage unlike material, judge whether every section of part of path impedance measurements close
Lattice；If all part of path impedance measurements are qualified, judge that the line impedance is qualified.
The invention also discloses a kind of line impedance detecting system, including：
Curve acquisition module, for carrying out testing impedance to the circuit by impedance instrument, obtain the circuit resistance
The Impedance measurement curve of anti-measurement data composition；
Section setup module, for setting the measured value that first trough rises at half on the Impedance measurement curve to be
Starting point, the measured value measured on impedance curve at end region rising half is terminal；
Data acquisition module, for confirming on the Impedance measurement curve from the starting point to the resistance in the terminal section
Anti- measurement data is the first impedance measurement data；
Computing module, for calculating average value of first impedance measurement data in regulation span, obtain
One evaluation and test value；
Judge module, for judging the first evaluation and test value whether in the range of specified impedance, if it is, described in judging
Line impedance is qualified, if it is not, then judging that the line impedance is unqualified.
Preferably, the circuit includes differential impedance line.
Preferably, the regulation span of differential impedance line of the length less than 10mm is 30%-70%；
The regulation span of differential impedance line of the length not less than 10mm is 50%-70%.
Preferably, the detecting system also includes：
Judge module is segmented, for when the part of path of the circuit including multistage unlike material, judging every section of part of path
Whether impedance measurements are qualified；If all part of path impedance measurements are qualified, judge that the line impedance is qualified.
The invention also discloses a kind of line impedance detection means, including：
Memory, for storing computer program；
Processor, the step of line impedance detection method as described above is realized during for performing the computer program.
The invention also discloses a kind of readable storage medium storing program for executing, computer program, institute are stored with the readable storage medium storing program for executing
State the step of line impedance detection method as described above is realized when computer program is executed by processor.
The invention discloses a kind of line impedance detection method, including：The circuit is hindered by impedance instrument
Anti- test, obtain the Impedance measurement curve of the line impedance measurement data composition；Set first on the Impedance measurement curve
The measured value that individual trough rises at half is starting point, and the measured value that end region rises at half on the measurement impedance curve is
Terminal；Confirm on the Impedance measurement curve from the starting point to the impedance measurement data in the terminal section to be the first impedance
Measurement data；Average value of first impedance measurement data in regulation span is calculated, obtains the first evaluation and test value；Judge
Whether the first evaluation and test value is in the range of specified impedance, if it is, judging that the line impedance is qualified, if it is not, then sentencing
The fixed line impedance is unqualified.By the algorithm in the present invention, accurate line impedance value can be obtained, utilizes the line
Road impedance value determines how the short-circuit conditions of opening of circuit, compared with prior art, can be obtained by specific impedance value thinner
The line condition analysis result of cause.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of step flow chart of line impedance detection method；
Fig. 2 is the Impedance measurement curve map of the specific circuit of an application circuit impedance detection method；
Fig. 3 is a kind of structure distribution figure of line impedance detecting system；
Fig. 4 is a kind of structure distribution figure of line impedance detection means.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is shown in Figure 1 the embodiment of the invention discloses a kind of line impedance detection method, including：
S1：Testing impedance is carried out to the circuit by impedance instrument, obtains the line impedance measurement data composition
Impedance measurement curve；
Wherein, the circuit can be differential impedance line or single-ended impedance line.When circuit is differential impedance line
When, 2 points of the probe of impedance instrument is individually placed to differential lines and tested on；When circuit is single-ended impedance line, impedance is surveyed
The probe of examination instrument is a little placed on single ended line, and any is placed on line grounding wire and tested.It is understood that the circuit
The form for showing as wire harness or the form of integrated circuit board can be integrated.
S2：The measured value for setting on the Impedance measurement curve first trough to rise at half is starting point, the measurement
The measured value that end region rises at half on impedance curve is terminal；
S3：Confirm on the Impedance measurement curve from the starting point to the impedance measurement data in the terminal section for the
One impedance measurement data；
It is lengthy and jumbled interference information, starting point and end that this, which is due to the Impedance measurement curve starting end that test obtains and terminates end,
Impedance data in point section is only real line impedance.
S4：Average value of first impedance measurement data in regulation span is calculated, obtains the first evaluation and test value；
Further, according to the model of actual measurement circuitry, it is specified that span is different.For example, length is less than
The regulation span of 10mm differential impedance line is 30%-70%；The institute of differential impedance line of the length not less than 10mm
It is 50%-70% to state regulation span.
S5：The first evaluation and test value is judged whether in the range of specified impedance, if it is, judging that the line impedance is closed
Lattice, if it is not, then judging that the line impedance is unqualified.
Specifically, when applying in a certain actual track, its testing impedance curve is obtained as shown in Fig. 2 wherein determining
Point abscissa is 45.689ps, and terminal abscissa is 213.97ps.The first impedance measurement data in figure is obtained, calculates the section
50%-70% measurement data average value, obtain the Ω of the first evaluation and test value 98.083.Whether the first evaluation and test value for judging to obtain is advising
In the range of constant impedance scope 90-110 Ω, then judge that the line impedance is qualified.
Present embodiment discloses a kind of line impedance detection method, including：The circuit is carried out by impedance instrument
Testing impedance, obtain the Impedance measurement curve of the line impedance measurement data composition；Set on the Impedance measurement curve
The measured value that one trough rises at half is starting point, and end region rises the measured value at half on the measurement impedance curve
For terminal；Confirm to hinder from the starting point to the impedance measurement data in the terminal section for first on the Impedance measurement curve
Anti- measurement data；Average value of first impedance measurement data in regulation span is calculated, obtains the first evaluation and test value；Sentence
Whether the first evaluation and test value of breaking is in the range of specified impedance, if it is, judge that the line impedance is qualified, if it is not, then
Judge that the line impedance is unqualified.By the algorithm in the present embodiment, accurate line impedance value can be obtained, is utilized
The line impedance value determines how the short-circuit conditions of opening of circuit, compared with prior art, can be obtained by specific impedance value
Finer line condition analysis result.
The embodiment of the invention discloses a kind of specific line impedance detection method, relative to a upper embodiment, this implementation
Example has made further instruction and optimization to technical scheme.Specifically：
The detection method also includes：
When the circuit includes the part of path of multistage unlike material, judge whether every section of part of path impedance measurements close
Lattice；If all part of path impedance measurements are qualified, judge that the line impedance is qualified.
The method detected to every section of line impedance, including the means such as open-short circuit, flying probe, four line low-resistances test,
Total length line impedance detection method in an embodiment can also all should be used to every section of circuit, so as to further obtain overall circuit
The whether qualified information in upper local line section.
Accordingly, the present embodiment also discloses a kind of line impedance detecting system, shown in Figure 3, including：
Curve acquisition module 01, for carrying out testing impedance to the circuit by impedance instrument, obtain the circuit
The Impedance measurement curve of impedance measurement data composition；
Section setup module 02, for setting the measured value on the Impedance measurement curve at first trough rising half
For starting point, the measured value measured on impedance curve at end region rising half is terminal；
Data acquisition module 03, for confirming on the Impedance measurement curve in from the starting point to the terminal section
Impedance measurement data is the first impedance measurement data；
Computing module 04, for calculating average value of first impedance measurement data in regulation span, obtain
First evaluation and test value；
Judge module 05, for judging the first evaluation and test value whether in the range of specified impedance, if it is, judging institute
It is qualified to state line impedance, if it is not, then judging that the line impedance is unqualified.
Preferably, the circuit includes differential impedance line.
Preferably, the regulation span of differential impedance line of the length less than 10mm is 30%-70%；
The regulation span of differential impedance line of the length not less than 10mm is 50%-70%.
Preferably, the detecting system also includes：
Judge module is segmented, for when the part of path of the circuit including multistage unlike material, judging every section of part of path
Whether impedance measurements are qualified；If all part of path impedance measurements are qualified, judge that the line impedance is qualified.
Accordingly, present embodiment discloses a kind of line impedance detection means, referring to Fig. 4, including：
Storage, 11, for storing computer program；
Processor 12, the line impedance detection method as described in above-mentioned embodiment is realized during for performing the computer program
The step of.
The invention also discloses a kind of readable storage medium storing program for executing, computer program, institute are stored with the readable storage medium storing program for executing
State and realized when computer program is executed by processor as described in above-mentioned embodiment the step of line impedance detection method.
Finally, it is to be noted that, herein, 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 any this actual relation or order be present.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 elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for 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 other identical element in the process including the key element, method, article or equipment being also present.
A kind of line impedance detection method provided by the present invention, system, device and readable storage medium storing program for executing are carried out above
It is discussed in detail, specific case used herein is set forth to the principle and embodiment of the present invention, above example
Explanation be only intended to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in specific embodiments and applications, in summary, in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
- A kind of 1. line impedance detection method, it is characterised in that including：Testing impedance is carried out to the circuit by impedance instrument, obtains the test resistance of the line impedance measurement data composition Anti- curve；The measured value for setting on the Impedance measurement curve first trough to rise at half is starting point, the measurement impedance curve The measured value that upper end region rises at half is terminal；Confirm on the Impedance measurement curve from the starting point to the impedance measurement data in the terminal section to be the first impedance Measurement data；Average value of first impedance measurement data in regulation span is calculated, obtains the first evaluation and test value；The first evaluation and test value is judged whether in the range of specified impedance, if it is, judge that the line impedance is qualified, if It is no, then judge that the line impedance is unqualified.
- 2. detection method according to claim 1, it is characterised in that the circuit includes differential impedance line.
- 3. detection method according to claim 2, it is characterised in thatThe regulation span of the differential impedance line of the length less than 10mm is 30%-70%；The regulation span of the differential impedance line of the length not less than 10mm is 50%-70%.
- 4. according to the detection method described in any one of claims 1 to 3, it is characterised in that also include：When the circuit includes the part of path of multistage unlike material, judge whether every section of part of path impedance measurements are qualified； If all part of path impedance measurements are qualified, judge that the line impedance is qualified.
- A kind of 5. line impedance detecting system, it is characterised in that including：Curve acquisition module, for carrying out testing impedance to the circuit by impedance instrument, obtain the line impedance and survey Measure the Impedance measurement curve of data composition；Section setup module, for setting the measured value that first trough rises at half on the Impedance measurement curve to be Point, the measured value measured on impedance curve at end region rising half is terminal；Data acquisition module, for confirming to survey from the starting point to the impedance in the terminal section on the Impedance measurement curve Amount data are the first impedance measurement data；Computing module, for calculating average value of first impedance measurement data in regulation span, obtain first and comment Measured value；Judge module, for judging the first evaluation and test value whether in the range of specified impedance, if it is, judging the circuit Impedance is qualified, if it is not, then judging that the line impedance is unqualified.
- 6. detecting system according to claim 5, it is characterised in that the circuit includes differential impedance line.
- 7. detecting system according to claim 6, it is characterised in thatThe regulation span of the differential impedance line of the length less than 10mm is 30%-70%；The regulation span of the differential impedance line of the length not less than 10mm is 50%-70%.
- 8. according to the detecting system described in any one of claim 5 to 7, it is characterised in that also include：Judge module is segmented, for when the part of path of the circuit including multistage unlike material, judging every section of part of path impedance Whether measurement result is qualified；If all part of path impedance measurements are qualified, judge that the line impedance is qualified.
- A kind of 9. line impedance detection means, it is characterised in that including：Memory, for storing computer program；Processor, the line impedance detection side as described in any one of Claims 1-4 is realized during for performing the computer program The step of method.
- 10. a kind of readable storage medium storing program for executing, it is characterised in that computer program, the meter are stored with the readable storage medium storing program for executing Realized when calculation machine program is executed by processor as described in any one of Claims 1-4 the step of line impedance detection method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710867522.5A CN107589300A (en) | 2017-09-22 | 2017-09-22 | A kind of line impedance detection method, system, device and readable storage medium storing program for executing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710867522.5A CN107589300A (en) | 2017-09-22 | 2017-09-22 | A kind of line impedance detection method, system, device and readable storage medium storing program for executing |
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| CN201710867522.5A Pending CN107589300A (en) | 2017-09-22 | 2017-09-22 | A kind of line impedance detection method, system, device and readable storage medium storing program for executing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188101A (en) * | 2018-09-25 | 2019-01-11 | 郑州云海信息技术有限公司 | Acquisition methods, system, device and the readable storage medium storing program for executing of medium electric parameter |
| CN112798865A (en) * | 2020-12-30 | 2021-05-14 | 苏州浪潮智能科技有限公司 | Impedance test analysis method and device |
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| CN101876674A (en) * | 2009-04-30 | 2010-11-03 | 鸿富锦精密工业（深圳）有限公司 | Characteristic impedance testing system and method |
| CN201859179U (en) * | 2010-09-01 | 2011-06-08 | 深圳市深联电路有限公司 | Printed circuit board (PCB) fast impedance test system |
| CN104931785A (en) * | 2015-05-24 | 2015-09-23 | 北京工业大学 | PCB characteristic impedance test method based on mode approach |
| CN105675990A (en) * | 2016-01-01 | 2016-06-15 | 广州兴森快捷电路科技有限公司 | Link impedance test method for multi-layer interconnection circuit board |
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- 2017-09-22 CN CN201710867522.5A patent/CN107589300A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876674A (en) * | 2009-04-30 | 2010-11-03 | 鸿富锦精密工业（深圳）有限公司 | Characteristic impedance testing system and method |
| CN201859179U (en) * | 2010-09-01 | 2011-06-08 | 深圳市深联电路有限公司 | Printed circuit board (PCB) fast impedance test system |
| CN104931785A (en) * | 2015-05-24 | 2015-09-23 | 北京工业大学 | PCB characteristic impedance test method based on mode approach |
| CN105675990A (en) * | 2016-01-01 | 2016-06-15 | 广州兴森快捷电路科技有限公司 | Link impedance test method for multi-layer interconnection circuit board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109188101A (en) * | 2018-09-25 | 2019-01-11 | 郑州云海信息技术有限公司 | Acquisition methods, system, device and the readable storage medium storing program for executing of medium electric parameter |
| CN112798865A (en) * | 2020-12-30 | 2021-05-14 | 苏州浪潮智能科技有限公司 | Impedance test analysis method and device |
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