CN102175902A - Digital waveform processing system and method for oscilloscope - Google Patents
Digital waveform processing system and method for oscilloscope Download PDFInfo
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- CN102175902A CN102175902A CN2011100002592A CN201110000259A CN102175902A CN 102175902 A CN102175902 A CN 102175902A CN 2011100002592 A CN2011100002592 A CN 2011100002592A CN 201110000259 A CN201110000259 A CN 201110000259A CN 102175902 A CN102175902 A CN 102175902A
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Abstract
The invention relates to a digital waveform processing system for an oscilloscope. The system comprises a computer and the oscilloscope, wherein the computer controls the oscilloscope. The system further comprises a signal generator, wherein the signal generator produces a reference waveform, and inputs the reference waveform into the oscilloscope. In the digital waveform processing system and the digital waveform processing method for the oscilloscope, waveforms processed by the oscilloscope are represented in form of digit, and sampling points in the same state at a certain moment can be merged, so a produced oscillogram is simpler.
Description
Technical field
The present invention relates to a kind of oscillograph and handle the system and method for waveform, refer in particular to the system and method that a kind of oscillograph is handled digital waveform.
Background technology
Oscillograph is the time dependent waveform display instrument of shows signal amplitude of image, is a kind of comprehensive characteristics of signals tester, is the basic kind of electronic measuring instrument.Along with industrial expansion, for detection signal more efficiently, the processing that oscillograph is produced waveform is had higher requirement.Because it is by gathering a large amount of sampled points on the oscillogram of oscillograph generation with waveform to be measured that traditional oscillograph is handled the method for waveform, as can gather tens thousand of sampled points, judge that then institute's sampled point of getting judges the oscillogram of generation at the state at each moment place.If the moment at this place is a low level, then use null representation; If the moment at this place is a high level, then represent with one.So, just tested waveform can have been presented the analysis for the staff by the pairing level state of above-mentioned a large amount of sampled points in the mode of digital waveform.
Above-mentioned oscillograph is handled the method for waveform owing to inscribe the state at place must adopt a large amount of sampled points just can accurately judge each the time, so as oscillogram that adopts 10,000 sampled points will corresponding 10,000 number words to form, so, oscillograph not only can occupy storage space when handling the waveform of described formation, and unfavorablely uses the work man analysis.And in practical operation, our described as can be seen sampled point may all be in a certain period in the same state, all is in low level or high level at a time.If can be with under the same state down-sampling point merge record in above-mentioned section sometime, oscillograph will be convenient directly perceived when handling waveform like this, is convenient to the staff and analyzes and record.
So we wish to handle the system and method for digital waveform for the user provides a kind of brand-new oscillograph.
Summary of the invention
The actual technical matters to be solved of the present invention is how to provide a kind of oscillograph to handle the system and method for digital waveform.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of oscillograph and handle the system of digital waveform, comprise computing machine and oscillograph, the described oscillograph of described computer control, and this system also comprises a signal generator, and described signal generator produces a reference waveform and is input in the described oscillograph.
Oscillograph of the present invention is handled the system and method for digital waveform, owing to all be to embody with digital form after handling through oscillograph, at a time same state sampled point down merges processing, so the oscillogram of generation is simpler; Moreover method of the present invention can arrive the oscillographic purpose of control by computing machine, and oscillograph sends to computing machine with the signal of storage more then, so just the waveform that collects can be stored in the computing machine by computing machine, is convenient to analyze.
Description of drawings
Fig. 1 is the system that oscillograph of the present invention is handled digital waveform;
Fig. 2 is the synoptic diagram of oscillograph of the present invention tested waveform and reference waveform when handling digital waveform;
Fig. 3 is the method that oscillograph of the present invention is handled digital waveform.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Please refer to shown in Figure 1ly, the system that oscillograph of the present invention is handled digital waveform comprises computing machine, oscillograph and signal generator.Described oscillograph of wherein said computer control and described signal generator, and signal generator can produce a reference waveform, and itself and waveform to be measured sent in the described oscillograph simultaneously, and described oscillograph then sends in computing machine and storage by sampling above-mentioned waveform, so that the staff analyzes.
Please refer to shown in Figure 2, tested waveform of the present invention shown in figure A, T1 constantly low transition become high level, become low level behind the elapsed time T2, constantly be changed to high level again, be changed to low level again through T4 through T3, be changed to high level again through T5, so repeatedly.Because described computing machine can be controlled described signal generator and produces a reference waveform, and described reference waveform can be set at and satisfies following three conditions: the first, and described reference waveform must be synchronous with tested waveform; The second, the cycle of described reference waveform is two times that the narrowest level in the tested waveform is held time; The 3rd, the dutycycle of described reference waveform is 50 percent.After satisfying above-mentioned three conditions, just can form the reference waveform shown in figure B.Be that reference waveform is changed to high level constantly at T1, and constantly can be transformed to low level, be transformed to high level constantly again, be transformed to low level constantly again, be transformed to high level during the moment again to T2 to T13 to T12 at T11.So each level of tested waveform just forms the multiple relation with the level of reference waveform, can draw the relation of tested waveform with respect to reference waveform thus.
Please refer to shown in Figure 3, because the oscillogram that oscillograph of the present invention produced is digital waveform figure, and handle according to above-mentioned oscillograph in the system of waveform, described signal generator can produce a reference waveform figure B, so we import one road reference waveform B in oscillograph, and this reference waveform B and tested waveform A are arranged to synchronously; And the cycle of reference waveform is two times that the narrowest level in the tested waveform is held time, and the high level of promptly described reference waveform B or low level are that waveform is the narrowest among the tested waveform A; The dutycycle of described reference waveform is 50 percent simultaneously, and aligns with the efficient clock edge of tested waveform.So after described reference waveform B satisfied above-mentioned condition again, this moment, oscillograph can be stored as text formatting with tested waveform and reference waveform simultaneously under the condition of high sampling rate; And then utilize COMPUTER CALCULATION to go out described reference waveform at a high level or sampling number that low level comprised, and it is made as reference value, calculate tested waveform again at each high level and low level sampling number.Suppose that now it is 200 that COMPUTER CALCULATION goes out that described reference waveform counts in a high level or employing that low level comprised, is made as reference value with described 200 sampled points; And can calculate equally described tested waveform T1 to T2 constantly the sampling number of section be 800, T2 is 400 to the sampling number of T3 moment section, T3 to T4 constantly the sampling number of section be 200, T4 to T5 constantly the sampling number of section be 600, T5 is 400 to the sampled point in T6 moment period.Then, with above-mentioned tested waveform the sampling number of each level divided by described reference waveform as reference value, promptly with T1 to T2 constantly the sampling number of section be 800 divided by reference value 200, can obtain numeral 4 thus, because tested waveform is high level at T1 to T2 moment section, so the binary number character waveform after conversion is 1111; In like manner, with T2 to T3 constantly the sampling number of section be 400 divided by reference value 200, can obtain numeral 2 thus, because tested waveform section is a low level at T2 to T3 constantly, so the binary number character waveform after conversion is for being 00; Successively, the binary number character waveform after T3 changes to the T4 section is 1, and the numeral after T4 changes to T5 is 000, and the binary number character waveform after T5 changes to the T6 section is 11.Final just can draw simple numerical oscillogram, be expressed as 111100100011 and can store in the computing machine for staff's analysis.
Claims (10)
1. an oscillograph is handled the system of digital waveform, comprises computing machine and oscillograph, and the described oscillograph of described computer control is characterized in that: also comprise a signal generator, and described signal generator produces a reference waveform and is input in the described oscillograph.
2. the system as claimed in claim 1, it is characterized in that: the described signal generator of described computer control produces a reference waveform.
3. the system as claimed in claim 1, it is characterized in that: described reference waveform and waveform to be measured can be input in the described oscillograph simultaneously.
4. system as claimed in claim 3 is characterized in that: described oscillograph is by the sampling above-mentioned waveform of storage and be returned to computing machine.
5. system as claimed in claim 4 is characterized in that: described employing is by high sampled point sampling.
6. oscillograph as claimed in claim 1 is handled the method for digital waveform, and its step is as follows:
At first, described signal generator produces a reference waveform;
Secondly, described oscillograph is stored as text formatting with reference waveform and tested waveform under the condition of high sampling rate;
At last, calculate simple numerical waveform and being stored in the described computing machine.
7. method as claimed in claim 6, it is characterized in that: described calculating comprise calculate high level of described reference waveform or sampling number that low level comprised and with it as reference value, and calculate tested waveform at each high level and low level sampling number.
8. method as claimed in claim 7 is characterized in that: the sampling number of tested each high-low level of waveform just can be obtained simple numerical waveform divided by reference value.
9. method as claimed in claim 6 is characterized in that: the cycle of described reference waveform is two times that the narrowest level in the described tested waveform is held time.
10. method as claimed in claim 6 is characterized in that: described reference waveform and tested synchronous waveform, and the dutycycle of reference waveform is 50 percent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110000259 CN102175902B (en) | 2011-01-04 | 2011-01-04 | Digital waveform processing system and method for oscilloscope |
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| CN 201110000259 CN102175902B (en) | 2011-01-04 | 2011-01-04 | Digital waveform processing system and method for oscilloscope |
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| CN102175902A true CN102175902A (en) | 2011-09-07 |
| CN102175902B CN102175902B (en) | 2013-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655260A (en) * | 2021-08-18 | 2021-11-16 | 合肥联宝信息技术有限公司 | Picture processing method and equipment |
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| US6222521B1 (en) * | 1998-04-03 | 2001-04-24 | Tektronix, Inc. | High waveform throughput digital oscilloscope with variable intensity rasterizer and variable intensity or color display |
| CN101241145A (en) * | 2008-03-11 | 2008-08-13 | 江苏绿扬电子仪器集团有限公司 | Method for waveform sampling and reconstitution for oscillographs |
| CN101413968A (en) * | 2008-09-30 | 2009-04-22 | 中国电子科技集团公司第四十一研究所 | Digital oscilloscope and method for controlling display waveform |
| CN101726644A (en) * | 2009-11-20 | 2010-06-09 | 电子科技大学 | Digital storage oscilloscope with functions of waveform fast location and zooming |
| CN101788579A (en) * | 2010-02-09 | 2010-07-28 | 中兴通讯股份有限公司 | Oscilloscope, signal wave shape collection and display method and system thereof |
| CN201548603U (en) * | 2009-11-02 | 2010-08-11 | 北京普源精电科技有限公司 | Digital oscilloscope with equivalent sampling functions |
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2011
- 2011-01-04 CN CN 201110000259 patent/CN102175902B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6222521B1 (en) * | 1998-04-03 | 2001-04-24 | Tektronix, Inc. | High waveform throughput digital oscilloscope with variable intensity rasterizer and variable intensity or color display |
| CN101241145A (en) * | 2008-03-11 | 2008-08-13 | 江苏绿扬电子仪器集团有限公司 | Method for waveform sampling and reconstitution for oscillographs |
| CN101413968A (en) * | 2008-09-30 | 2009-04-22 | 中国电子科技集团公司第四十一研究所 | Digital oscilloscope and method for controlling display waveform |
| CN201548603U (en) * | 2009-11-02 | 2010-08-11 | 北京普源精电科技有限公司 | Digital oscilloscope with equivalent sampling functions |
| CN101726644A (en) * | 2009-11-20 | 2010-06-09 | 电子科技大学 | Digital storage oscilloscope with functions of waveform fast location and zooming |
| CN101788579A (en) * | 2010-02-09 | 2010-07-28 | 中兴通讯股份有限公司 | Oscilloscope, signal wave shape collection and display method and system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113655260A (en) * | 2021-08-18 | 2021-11-16 | 合肥联宝信息技术有限公司 | Picture processing method and equipment |
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