CN101666820A - Digital oscilloscope and data processing method thereof - Google Patents
Digital oscilloscope and data processing method thereof Download PDFInfo
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- CN101666820A CN101666820A CN200910108940A CN200910108940A CN101666820A CN 101666820 A CN101666820 A CN 101666820A CN 200910108940 A CN200910108940 A CN 200910108940A CN 200910108940 A CN200910108940 A CN 200910108940A CN 101666820 A CN101666820 A CN 101666820A
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Abstract
The invention relates to a digital oscilloscope and a data processing method thereof. The digital oscilloscope comprises a data acquisition module, a data processing module, a memory module, a local video memory and a display module; the data processing module is used for temporarily storing the digital signal output by the data acquisition module in the memory module, judging whether the data volume temporarily stored by the memory module equals to a preset value, reading the temporarily stored data from the memory module and carrying out waveform processing when the data volume temporarily stored by the memory module equals to the preset value, reading waveform data from the local video memory and controlling the display module to display the waveform. The data processing method of the digital oscilloscope comprises the following steps: S1, acquiring data; S2, temporarily storing data; S3, judging whether the temporarily stored data volume equals to the preset value, if yes, executing S4, otherwise, executing S1; S4, reading the temporarily stored data and carrying out waveform processing; and S5, displaying waveform. The digital oscilloscope and the data processing method thereof improve waveform refresh rate.
Description
Technical field
The present invention relates to a kind of digital oscilloscope and data processing method thereof.
Background technology
Digital oscilloscope is a kind of electric signal testing tool, is used for measuring, observe, write down and analyzing various instantaneous physics change in electric, is showing the variation of electric signal on time shaft in the waveform mode on the display screen.The number of times of digital oscilloscope IT p.s. signal is exactly a wave capture speed, also claims wave-form refresh rate, and unit is waveform number/second (wfms/s).The wave-form refresh rate of digital oscilloscope is high more, and the probability of catching accidental random occurrence is high more, can reappear the real-time real change of microphysics electric signal more.
Traditional digital oscilloscope all is to gather a Wave data, handles then and shows a Wave data.Be subjected to the restriction of data processing speed, under the same hardware environment, the overall refresh rate of digital oscilloscope does not perform to maximum effect.For instance, the front end of digital oscilloscope has been gathered 10W Wave data, and 2W Wave data may only have been handled in the rear end, and therefore, wave-form refresh rate has only 2wfms/s (the wave-form refresh rate maximal value is 10wfms/s in theory).
Summary of the invention
In view of this, be necessary to provide a kind of digital oscilloscope that can improve wave-form refresh rate at the not high problem of traditional digital oscilloscope wave-form refresh rate.
A kind of digital oscilloscope comprises data acquisition module, data processing module, memory module, video memory, display module; Described data acquisition module sampled analog signal, and be digital signal with analog signal conversion; Described data processing module is used for the digital signal of data acquisition module output is temporarily stored in memory module, judge whether the temporary data volume of memory module equals preset value, when the temporary data volume of memory module equals preset value, from memory module, read temporary data and carry out waveform processing, from video memory, read Wave data, control display module display waveform.
Preferably, described memory module is a static RAM.
Preferably, described static RAM adopts the storage mode of first in first out.
Preferably, the temporary data volume of described memory module is that data acquisition module is gathered 2 times data volume at least.
Preferably, the temporary data volume of described memory module is the data volume of data collecting module collected 7 times.
A kind of data processing method of digital oscilloscope also is provided.
A kind of data processing method of digital oscilloscope comprises: S1: image data; S2: temporal data; S3: judge whether temporary data volume equals preset value, if, then carry out S4, if not, then carry out S1; S4: read temporary data and carry out waveform processing; S5: display waveform.
Preferably, described step S3 is by calculating the number of times of image data, and judges that the number of times whether number of times of image data equals to preset realizes.
Preferably, described default number of times is 7 times.
Preferably, described step S1 and S2 carry out always.
Above-mentioned digital oscilloscope has improved wave-form refresh rate by optimized work flow (gather repeatedly, handle once).
Description of drawings
Fig. 1 is the synoptic diagram of digital oscilloscope.
Fig. 2 is the process flow diagram of the data processing method of digital oscilloscope.
Fig. 3 is the form synoptic diagram of memory module storage data.
Embodiment
Fig. 1 is the synoptic diagram of digital oscilloscope.Digital oscilloscope comprises data acquisition module, data processing module, memory module, video memory, display module.
Data acquisition module comprises a plurality of analog to digital converters.Each analog to digital converter is by specific frequency real-time sampling simulating signal, and is digital signal with analog signal conversion.The sampling rate of data acquisition module is generally very big, and for example analog to digital converter data volume of sampling in 10ns is 2B, and when the number of the analog to digital converter of data acquisition module was 5, its sampling rate was 1GB/s.
Memory module generally adopt static RAM (Static Random Access Memory, SRAM).Static RAM preferably adopts first in first out (First-In First-Out, storage mode FIFO).
Data processing module is used for the digital signal of data acquisition module output is temporarily stored in memory module, judge whether the temporary data volume of memory module equals preset value, from memory module, read temporary data and carry out waveform processing, from video memory, read Wave data, control display module display waveform.
Fig. 2 is the process flow diagram of the data processing method of digital oscilloscope.The data processing method of digital oscilloscope comprises:
S1: image data.
The working method of a plurality of analog to digital converters of data acquisition module is the concurrent working mode.Each analog to digital converter is by specific frequency real-time sampling simulating signal, and is digital signal with analog signal conversion.
S2: temporal data.
Data processing module is temporarily stored in the digital signal of data acquisition module output in the memory module.The data volume that the tentation data acquisition module is once gathered is 20Kb, and the capacity of memory module is 2MB, and memory module can be stored the data that data acquisition module is gathered for 100 times at most so.The form of memory module storage data as shown in Figure 3.The each data of gathering of data acquisition module all are to be temporarily stored in the memory module (and traditional digital oscilloscope is directly the data of gathering to be handled, and show), and data acquisition module continues image data then.
S3: judge whether temporary data volume equals preset value, if, then carry out S4, if not, then carry out S1.
This step can be passed through the number of times of computational data acquisition module image data, and the number of times (can freely set for example 100 times) whether the number of times of judgment data collection equals to preset is realized.
S4: read temporary data and carry out waveform processing.
Data processing module reads temporary data from memory module, empty memory module simultaneously, and data processing module carries out waveform processing to the data that read then.Waveform processing comprises numerical transformation, filtering, sampling or interpolation, wave shaping, FFT processing, waveform imaging etc.The processing time of each process is proportional with data volume basically, thus waveform processing this part take bigger system time resource.The waveform imaging is meant the mode imaging in system's video memory with point or line on the two-dimensional coordinate plane of the point that will obtain after the waveform processing.This process need is according to keyboard, the menu requirement of digital oscilloscope, data carried out the changes in coordinates of various complexity, to reach different observation waveform purposes.
S5: display waveform.
Data processing module reads Wave data from video memory, control display module display waveform.
When data processing module carried out waveform processing to the data that read, S1 and S2 carried out simultaneously.That is to say that data acquisition and temporary process are carried out always.
Through experiment test repeatedly, best situation is data acquisition 7 times, the unified then data processing of carrying out a time.At this moment, wave-form refresh rate is 2.62 times of traditional approach.
Above-mentioned digital oscilloscope has improved wave-form refresh rate by optimized work flow (gather repeatedly, handle once).
The mode of operation of above-mentioned digital oscilloscope is to obtain higher wave-form refresh rate by sacrificing waveform triggering storage depth.In order to satisfy the user demand of user in different occasions, above-mentioned digital oscilloscope can provide two kinds of mode of operations to select for the user, and promptly high wave-form refresh rate mode of operation and high waveform trigger the storage depth pattern.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1, a kind of digital oscilloscope is characterized in that: comprise data acquisition module, data processing module, memory module, video memory, display module; Described data acquisition module sampled analog signal, and be digital signal with analog signal conversion; Described data processing module is temporarily stored in the digital signal of data acquisition module output in the memory module, judge whether the temporary data volume of memory module equals preset value, when the temporary data volume of memory module equals preset value, from memory module, read temporary data and carry out waveform processing, from video memory, read Wave data and control the display module display waveform.
2, digital oscilloscope according to claim 1 is characterized in that: described memory module is a static RAM.
3, digital oscilloscope according to claim 2 is characterized in that: described static RAM adopts the storage mode of first in first out.
4, digital oscilloscope according to claim 1 is characterized in that: the temporary data volume of described memory module is that data acquisition module is gathered 2 times data volume at least.
5, digital oscilloscope according to claim 4 is characterized in that: the temporary data volume of described memory module is the data volume of data collecting module collected 7 times.
6, a kind of data processing method of digital oscilloscope is characterized in that: comprising:
S1: image data;
S2: temporal data;
S3: judge whether temporary data volume equals preset value, if, then carry out S4, if not, then carry out S1;
S4: read temporary data and carry out waveform processing;
S5: display waveform.
7, the data processing method of digital oscilloscope according to claim 6 is characterized in that: described step S3 is by calculating the number of times of image data, and judges that the number of times whether number of times of image data equals to preset realizes.
8, the data processing method of digital oscilloscope according to claim 7 is characterized in that: described default number of times is 7 times.
9, the data processing method of digital oscilloscope according to claim 6 is characterized in that: described step S1 and S2 carry out always.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915864A (en) * | 2010-07-09 | 2010-12-15 | 苏州瀚瑞微电子有限公司 | Vector oscilloscope device |
| CN102384993A (en) * | 2010-08-31 | 2012-03-21 | 河南友利华系统工程有限公司 | Dynamic monitoring storage type oscilloscope |
| CN102539864A (en) * | 2010-12-31 | 2012-07-04 | 北京普源精电科技有限公司 | Digital oscilloscope and signal measuring method |
| CN103018515A (en) * | 2012-12-12 | 2013-04-03 | 电子科技大学 | Digital oscilloscope with seamless measuring capability |
| CN103713173A (en) * | 2012-09-28 | 2014-04-09 | 特克特朗尼克公司 | Gaining timing accuracy of digital signals through averaging in the X-axis |
| CN103969484A (en) * | 2014-05-30 | 2014-08-06 | 广州致远电子股份有限公司 | High-refresh-rate waveform synthesizer and high-refresher-rate oscilloscope |
| CN104730307A (en) * | 2015-03-02 | 2015-06-24 | 深圳市鼎阳科技有限公司 | Gray level digital oscilloscope and waveform processing module and method thereof |
| CN106324312A (en) * | 2016-08-03 | 2017-01-11 | 深圳市鼎阳科技有限公司 | Method for oscilloscope to rapidly and precisely read data in vertical direction and oscilloscope |
| CN107040430A (en) * | 2016-01-19 | 2017-08-11 | 特克特朗尼克公司 | The selective extraction of network link training information |
| CN108132373A (en) * | 2017-12-20 | 2018-06-08 | 福建利利普光电科技有限公司 | Oscillograph knob-operated moves the processing method of effect |
| WO2019134685A1 (en) * | 2018-01-05 | 2019-07-11 | 深圳市道通科技股份有限公司 | Oscilloscope data processing method and device, and oscilloscope |
| CN113281587A (en) * | 2021-04-26 | 2021-08-20 | Tcl王牌电器(惠州)有限公司 | Detection method and system based on manufacturability design simulator |
| WO2022127560A1 (en) * | 2020-12-15 | 2022-06-23 | 深圳市道通科技股份有限公司 | Signal processing system in oscilloscope, oscilloscope and signal processing method |
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| CN101131403A (en) * | 2006-08-23 | 2008-02-27 | 王悦 | Digital oscillograph and its waveshape displaying method |
| CN101222619A (en) * | 2008-01-22 | 2008-07-16 | 重庆大学 | Multiplex image acquisition method based on embedded system |
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| CN101131403A (en) * | 2006-08-23 | 2008-02-27 | 王悦 | Digital oscillograph and its waveshape displaying method |
| CN101222619A (en) * | 2008-01-22 | 2008-07-16 | 重庆大学 | Multiplex image acquisition method based on embedded system |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915864B (en) * | 2010-07-09 | 2012-12-26 | 苏州瀚瑞微电子有限公司 | Vector oscilloscope device |
| CN101915864A (en) * | 2010-07-09 | 2010-12-15 | 苏州瀚瑞微电子有限公司 | Vector oscilloscope device |
| CN102384993A (en) * | 2010-08-31 | 2012-03-21 | 河南友利华系统工程有限公司 | Dynamic monitoring storage type oscilloscope |
| CN102539864B (en) * | 2010-12-31 | 2016-01-20 | 北京普源精电科技有限公司 | Digital oscilloscope and signal measurement method |
| CN102539864A (en) * | 2010-12-31 | 2012-07-04 | 北京普源精电科技有限公司 | Digital oscilloscope and signal measuring method |
| CN103713173A (en) * | 2012-09-28 | 2014-04-09 | 特克特朗尼克公司 | Gaining timing accuracy of digital signals through averaging in the X-axis |
| CN103713173B (en) * | 2012-09-28 | 2018-03-16 | 特克特朗尼克公司 | The timing accuracy of data signal is obtained by the average treatment of X-axis |
| CN103018515A (en) * | 2012-12-12 | 2013-04-03 | 电子科技大学 | Digital oscilloscope with seamless measuring capability |
| CN103018515B (en) * | 2012-12-12 | 2014-09-24 | 电子科技大学 | Digital oscilloscope with seamless measuring capability |
| CN103969484B (en) * | 2014-05-30 | 2016-10-19 | 广州致远电子股份有限公司 | High refresh rate waveform synthesizer and high refresh rate oscillograph |
| CN103969484A (en) * | 2014-05-30 | 2014-08-06 | 广州致远电子股份有限公司 | High-refresh-rate waveform synthesizer and high-refresher-rate oscilloscope |
| CN104730307A (en) * | 2015-03-02 | 2015-06-24 | 深圳市鼎阳科技有限公司 | Gray level digital oscilloscope and waveform processing module and method thereof |
| CN104730307B (en) * | 2015-03-02 | 2017-07-18 | 深圳市鼎阳科技有限公司 | Tonal gradation digital oscilloscope and its waveform processing module and method |
| CN107040430A (en) * | 2016-01-19 | 2017-08-11 | 特克特朗尼克公司 | The selective extraction of network link training information |
| CN106324312A (en) * | 2016-08-03 | 2017-01-11 | 深圳市鼎阳科技有限公司 | Method for oscilloscope to rapidly and precisely read data in vertical direction and oscilloscope |
| CN108132373A (en) * | 2017-12-20 | 2018-06-08 | 福建利利普光电科技有限公司 | Oscillograph knob-operated moves the processing method of effect |
| CN108132373B (en) * | 2017-12-20 | 2020-04-28 | 福建利利普光电科技有限公司 | Processing method for oscilloscope knob operation moving effect |
| WO2019134685A1 (en) * | 2018-01-05 | 2019-07-11 | 深圳市道通科技股份有限公司 | Oscilloscope data processing method and device, and oscilloscope |
| WO2022127560A1 (en) * | 2020-12-15 | 2022-06-23 | 深圳市道通科技股份有限公司 | Signal processing system in oscilloscope, oscilloscope and signal processing method |
| CN113281587A (en) * | 2021-04-26 | 2021-08-20 | Tcl王牌电器(惠州)有限公司 | Detection method and system based on manufacturability design simulator |
| CN113281587B (en) * | 2021-04-26 | 2023-03-10 | Tcl王牌电器(惠州)有限公司 | Detection method and system based on manufacturability design simulator |
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