CN103869127B - A kind of digital oscilloscope with track display function - Google Patents
A kind of digital oscilloscope with track display function Download PDFInfo
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- CN103869127B CN103869127B CN201210537423.8A CN201210537423A CN103869127B CN 103869127 B CN103869127 B CN 103869127B CN 201210537423 A CN201210537423 A CN 201210537423A CN 103869127 B CN103869127 B CN 103869127B
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Abstract
The present invention provides a kind of oscillograph with track display function, including：Waveform processing unit, waveform processing is carried out to sampled data, produces multiframe Wave data；Track storage control unit, multiframe Wave data is received, extract a frame per N frames Wave data during oscillograph is run writes the first trajectories storage as a frame track, and reads the frame track to controller from the first trajectories storage；And during oscillograph is run, using each frame Wave data of reception as a frame track the second trajectories storage of write-in, and stop sampling period in oscillograph and read a frame track to controller from the second trajectories storage in real time；First, second trajectories storage, only store the frame track being newly written；Controller, read-write of the control track storage control unit to first, second trajectories storage, and the track of reading is sent to display unit.Track is consistent with waveform after the oscillograph can ensure that system stopping, and avoids the operation reconfigured.
Description
Technical field
The present invention relates to universal electric to measure testing field, shows more particularly to a kind of numeral with track display function
Ripple device.
Background technology
Fig. 1 is a kind of structural representation of oscillograph of prior art.As shown in figure 1, form the several of the oscillograph 100
Formant includes：1st, controller 102：For controlling the setting of whole system of Oscillograph, there is provided friendly man-machine interaction experience；
2nd, state machine 104：For controlling process and correlation between each formant of oscillograph；3rd, ADC, Analog-digital Converter
Device 106, is sampled to measured signal, i.e. the conversion of analog to digital, obtains sampled data；4th, samples storage unit 108：With
In the processing and storage of completing ADC sampled datas；5th, waveform processing and drawing unit 110：For the sampled data to display
Handled, and be depicted as the waveform of display；6th, screen display unit 112：For by the waveform of drafting, man-machine interface and its
The content that he needs to show is shown on the display screen；7th, various memories：Including sampling memory 114, wave memorizer 116
With display-memory 118 etc., for depositing corresponding data.Sampling memory 114 stores the sampled data of digital quantity, and waveform is deposited
Reservoir 116 stores drawn waveform, and display-memory 118 stores waveform to be shown.Have various ways realize it is above-mentioned these
Unit, CPU can be used, DSP can be used, FPGA/CPLD can be used, can also be ASIC etc..In general, controller 102
It is CPU or DSP, samples storage unit 108 is FPGA or CPLD, and memory is ASIC, and other units are according to the specific of oscillograph
Function and performance requirement are varied from and accepted or rejected.
Fig. 2 is a kind of track of oscillograph with track display function and the structure of waveform display portion of prior art
Schematic diagram.As shown in Fig. 2 the oscillograph 200 includes：Waveform processing unit 1101, controller 210, track storage control unit
220th, trajectories storage 230, waveform drawing unit 1102 and screen display unit 112, only provide in Fig. 2 and show with waveform, track
Show the unit of correlation, other adjunct units, device can be found in Fig. 1.Waveform processing unit 1101 and waveform drawing unit 1102 are right
Should be in the waveform processing in Fig. 1 and drawing unit 110.Identical label indicates identical device, and different labels represents difference
Device or the device that changes of function.With reference to refering to Fig. 1, waveform processing unit 1101, for being obtained after carrying out waveform processing
To each frame Wave data；Waveform drawing unit 1102, for obtaining each frame Wave data, drafting obtains waveform, for display
Unit 112 carries out waveform and shown.Shown waveform is the history superposition of multiframe Wave data, shown so as to show twilight sunset,
The probability of waveform is shown.Track is usually to read trajectories storage 230 by controller 210 to obtain.Track storage control unit
220, for extracting a frame from every n frames Wave data as a frame track, it is stored in trajectories storage 230（Before covering
One track of storage）, afterwards controller carry out each frame track of 210 readings, shown for screen display unit 112 on screen
Show.The data source of waveform drawing unit 1102 is in waveform processing unit 1101.But in the oscillograph of early stage or without probability
In the design of the oscillograph of display, waveform drawing unit 1102 is consistent with the data of track storage control unit 220.Waveform
The waveform processing that processing unit 1101 is carried out refers to sampled data to be plotted on request on screen.Simply there is vector to show
With a display, probability is shown and twilight sunset is shown for more complex having.CH1 in Fig. 2 represents that measured signal comes from first passage, should
Oscillograph can be the oscillograph of multichannel.
Track is the waveform simply drawn, and early stage oscillograph or shows oscillograph without probability, as track with waveform is.
The information that complicated waveform can not just carry with other tracks, such as probability.Track renewal necessarily compares waveform during operation
Renewal is slow, that is, extracting again and again for waveform processing data shows.The two is independent, without specific relation, but
It must be identical both when stopping.It is here like to mean from sampled data once.
On high capture rate oscillograph, the capture rate of usual track is still than relatively low, because generally track is by controlling
Device processed reads and then carried out follow-up operation, such as Math computings, measurement, analysis etc. function, and these operate spent
Time is all more much longer than mean acquisition time, and especially in the case where operation is a lot, the time of consuming will add up.Therefore track
It is nonsynchronous with waveform.During operation, user can feel that the renewal rate of track is significantly lower than the renewal rate of waveform, but
It is wherein one in track or waveform, for example, waveform processing unit produces 0 ~ 200 frame waveform processing data, during stopping, rail
The 190th frame of foundation is shown in mark and the superposition of the 180th ~ 200 frame Wave data is shown in caused track, waveform.But
When stopping, in order to make the last item track identical with the last item waveform, existing or common practice is to read finally
The track of one waveform.The specific method for reading track has a lot, but all unavoidable operation reconfigured, is set some
In meter, such waveform that can cause to stop on screen that reconfigures can change, and Consumer's Experience is bad.
Inventor has found that the deficiencies in the prior art comprise at least during the present invention is realized：
When sampling stops, and to sampling, drawing system progress again under mated condition, screen display it is last
One track is different with the last item waveform.The main reason for different is that the speed that controller 210 reads track is far below track
Capture and draw the time.If the two quite, real-time track is realized using two storage mode cans of trajectories storage 230
Display.That is, track capture rate is several times of track reading rate, it is necessary to which several times of trajectories storage 230 is deposited
Track during this.Even if can all preserve these tracks, controller 210 can not also handle these tracks in real time, most
A track is still therefrom extracted eventually to handle.Therefore in practice, the track storage of this type only needs to store a track
.It is inconsistent so to may result in track and waveform when sampling stops.Unless the reading rate of controller, operation rate
Match with waveform capture rate, but under high capture rate oscillograph, not typically possible cost in other words is too big（Largely simultaneously
Row operation）.
The content of the invention
The purpose of the embodiment of the present invention is, there is provided a kind of digital oscilloscope with track display function, with waveform
It need not be reconfigured when stopping so that the last item track is identical with the waveform of last frame.
For the above-mentioned purpose, it is described the embodiments of the invention provide a kind of digital oscilloscope with track display function
Oscillograph includes：
Waveform processing unit, the sampled data for being obtained to sampling carry out waveform processing, produce multiframe Wave data；
Track storage control unit, for receiving multiframe Wave data, taken out during oscillograph is run per N frame Wave datas
Take a frame to write the first trajectories storage as a frame track, and the frame track is read to control from first trajectories storage
Device processed；And during oscillograph is run, the second track is write in real time using each frame Wave data of reception as a frame track
Memory, and stop sampling period in oscillograph and read a frame track to controller from second trajectories storage；
First trajectories storage, newly write after being handled for only storage track storage control unit the extraction of N frame Wave datas
The frame track entered；
Second trajectories storage, the frame track being newly written for only storage track storage control unit；
Controller, for controlling read-write of the track storage control unit to the first trajectories storage, the second trajectories storage,
And the track for reading track storage control unit is sent to display unit；
Display unit, the track for being sent according to controller carry out track and shown.
The beneficial effect of the above-mentioned technical proposal of the embodiment of the present invention is：
By increasing by the second trajectories storage, this newest trajectories storage stores newest complete the embodiment of the present invention all the time
Whole track（New track is directly covered to old track）, so as to which when system stops, controller is directly from newest track
The last item track is read in memory, the last item waveform trace is shown on the display unit, so can ensure that system
Stop（Sampling）After track is consistent with waveform afterwards, and avoids the operation reconfigured, and raising system stops
The efficiency of track operation, improves Consumer's Experience.
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 do one and simply introduce, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is a kind of overall structure diagram of oscillograph of prior art；
Fig. 2 is a kind of track of oscillograph with track display function and the structure of waveform display portion of prior art
Signal；
Fig. 3 is track and the waveform display portion of a kind of oscillograph with track display function of the embodiment of the present invention
Structural representation；
Fig. 4 is track and the waveform display portion that the another kind of the embodiment of the present invention has the oscillograph of track display function
Structural representation.
Embodiment
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
Part of the 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 embodiment of the present invention need not reconfigure when waveform stops, it is possible to track data is read rapidly, from
And avoid above mentioned problem existing for prior art.Can ensure system stop after track with waveform be consistent, and keep away
The operation reconfigured is exempted from；And the efficiency that track operates after system stops can be improved.Wherein, waveform stops referring to stop
Only sample, do not sample, that is, shown without new waveform.
Fig. 3 is track and the waveform display portion of a kind of oscillograph with track display function of the embodiment of the present invention
Structural representation.The overall architecture of oscillograph is referring to Fig. 1, the device of identical function repeats no more.As shown in figure 3, in this hair
In bright embodiment, a newest trajectories storage is added, this newest trajectories storage stores newest complete trajectory all the time
（New track is directly covered to old track）.The oscillograph 300 includes：
Waveform processing unit 1101, the sampled data for being obtained to sampling carry out waveform processing, produce multiframe waveform number
According to；
Track storage control unit 320, for receiving multiframe Wave data, per N frame waveform numbers during oscillograph is run
The first trajectories storage 330 is write as a frame track according to a frame is extracted, and the frame rail is read from the first trajectories storage 330
Mark is to controller 310；And during oscillograph is run, each frame Wave data of reception is write in real time as a frame track
Second trajectories storage 340, and stop sampling period in oscillograph and read a frame track to control from the second trajectories storage 340
Device；
First trajectories storage 330, the extraction of N frame Wave datas is handled for only storage track storage control unit 320
The frame track newly write afterwards；
Second trajectories storage 340, the frame track being newly written for only storage track storage control unit 320；
Controller 310, for controlling track storage control unit 320 to store the first trajectories storage 330, the second track
The read-write of device 340, and the track that track storage control unit 320 is read is sent to display unit 112；
Display unit 112, the track for being sent according to controller 310 carry out track and shown.
Alternatively, waveform processing unit 1101, for the amplitude of sampled data that is obtained to sampling and/or when base at
Reason, is required with adaptive system.
Alternatively, track storage control unit 320, specifically for during oscillograph is run, the second track of control stores
Device 340 directly covers old track with the frame track being newly written, only to store current newest track.Implement in the present invention
In example, track storage control unit 320 ceaselessly covers new track old track so that in newest trajectories storage 340
In store the last item track all the time.When system stops, controller is read finally from newest trajectories storage 340
One track.
Further, oscillograph also includes waveform drawing unit 1102, for obtaining caused by waveform processing unit 1101
Each frame Wave data, drafting obtain waveform；
Display unit 112 is additionally operable to during oscillograph is run and stopped sampling period, according to waveform drawing unit
Waveform caused by 1102 carries out waveform and shown, shown waveform is the history superposition of multiframe Wave data, and it includes probability letter
Breath, twilight sunset information etc..
In embodiments of the present invention, display unit 112 stops coming for the transmission of sampling period display controller 310 in oscillograph
From the last frame track for the second trajectories storage 340；Last frame track and the last frame in shown waveform
Wave data comes from same sampled data.
Fig. 4 is track and the waveform display portion that the another kind of the embodiment of the present invention has the oscillograph of track display function
Structural representation.The overall architecture of oscillograph with Fig. 3 identical devices referring to Fig. 1, repeat no more.As shown in figure 4, this shows
Ripple device 400 still further comprises：
3rd trajectories storage 350, the frame track being newly written for only storage track storage control unit 420；Rail
Mark storage control unit 420, using each frame Wave data of reception as a frame track, is alternately write during oscillograph is run
Enter in the second trajectories storage 340 and the 3rd trajectories storage 350.
Specifically, track storage control unit 350, specifically for during oscillograph is run, the 3rd track of control stores
Device 350 directly covers old track with the frame track being newly written, only to store current newest track.
In embodiments of the present invention, when the second trajectories storage 340, which writes frame track midway, stops sampling, it is stored
Track it is imperfect, then track storage control unit 420 read the 3rd trajectories storage 350 in preserve the one of newest write-once
Frame track to controller, 410 shows to track；Similar, stop when the 3rd trajectories storage 350 writes frame track midway
During sampling, the track that it is stored is imperfect, then track storage control unit 420 reads what is preserved in the second trajectories storage 340
One frame track of newest write-once is shown to controller 410 to track.
CH1 in Fig. 3, Fig. 4 represents first passage, and the oscillograph can be the digital oscilloscope of multichannel.
Because the storage of track is after waveform processing in embodiments of the present invention, track is complete, and
Certainly the waveform being shown on screen.So when system operation, controller is from common trajectories storage（Namely first
Trajectories storage 330）Middle reading track, this track are that the not timing of actual displayed waveform is extracted.Here extraction, refers to
A frame is extracted in multiframe Wave data as track, without referring to be extracted in the data of waveform.When system stops
Wait, controller is from newest trajectories storage（Namely second trajectories storage 340）Middle reading the last item track, this last
The last item waveform that bar track is necessarily shown in actual screen.
After controller control track storage control unit has read a complete frame track, track storage control unit just will
Next frame（Newest）A complete frame track store into common trajectories storage（Directly cover）.Also a kind of way is
When controller control track storage control unit reads a frame track a, track storage control unit starts to store next
Frame track b.When track storage control unit has not read track a, while track b is also stored after terminating, and track storage also will
Pause.Roll and it is low sweep fast mode under, the write-in and reading of track are carried out simultaneously, because this when of capture rate is very
It is low, can meet the needs of track is read and operated completely.
This have the advantage that：1st, ensure system stop after track with waveform be consistent, and avoid
The operation reconfigured.2nd, the efficiency that track operates after system stops is improved.
Those skilled in the art will also be appreciated that the various illustrative components, blocks that the embodiment of the present invention is listed
（illustrative logical block）, unit, and step can pass through the knot of electronic hardware, computer software, or both
Conjunction is realized.To clearly show that the replaceability of hardware and software（interchangeability）, above-mentioned various explanations
Property part（illustrative components）, unit and step universally describe their function.Such work(
Can be that specific application and the design requirement of whole system are depended on to realize by hardware or software.Those skilled in the art
Various methods can be used to realize described function, but this realization is understood not to for every kind of specific application
Beyond the scope of protection of the embodiment of the present invention.
Various illustrative logical blocks described in the embodiment of the present invention, or unit can by general processor,
Digital signal processor, application specific integrated circuit（ASIC）, field programmable gate array（FPGA）Or other programmable logic devices,
Discrete gate or transistor logic, discrete hardware components, or any of the above described combination are designed to realize or operate described function.
General processor can be microprocessor, alternatively, the general processor can also be any traditional processor, controller,
Microcontroller or state machine.Processor can also be realized by the combination of computing device, such as digital signal processor and micro-
Processor, multi-microprocessor, one or more microprocessors combine a Digital Signal Processor Core, or any other like
Configuration realize.
The step of method or algorithm described in the embodiment of the present invention can be directly embedded into hardware, computing device it is soft
Part unit or the combination of both.Software unit can be stored in RAM memory, flash memory, ROM memory, EPROM storages
Other any form of storaging mediums in device, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area
In.Exemplarily, storaging medium can be connected with processor, to allow processor to read information from storaging medium, and
Write information can be deposited to storaging medium.Alternatively, storaging medium can also be integrated into processor.Processor and storaging medium can
To be arranged in ASIC, ASIC can be arranged in user terminal.Alternatively, processor and storaging medium can also be arranged at use
In different parts in the terminal of family.
In one or more exemplary designs, above-mentioned function described by the embodiment of the present invention can be in hardware, soft
Part, firmware or any combination of this three are realized.If realized in software, these functions can store and computer-readable
On medium, or with one or more instruction or code form be transmitted on the medium of computer-readable.Computer readable medium includes electricity
Brain storaging medium and it is easy to so that allowing computer program to be transferred to other local telecommunication medias from a place.Storaging medium can be with
It is that any general or special computer can be with the useable medium of access.For example, such computer readable media can include but
It is not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage devices, or other
What can be used for carrying or store with instruct or data structure and it is other can be by general or special computer or general or specially treated
The medium of the program code of device reading form.In addition, any connection can be properly termed computer readable medium, example
Such as, if software is to pass through a coaxial cable, optical fiber computer, double from a web-site, server or other remote resources
Twisted wire, Digital Subscriber Line（DSL）Or with defined in being also contained in of the wireless way for transmitting such as infrared, wireless and microwave
In computer readable medium.Described disk（disk）And disk（disc）Including Zip disk, radium-shine disk, CD, DVD, floppy disk
And Blu-ray Disc, disk is generally with magnetic duplication data, and disk generally carries out optical reproduction data with laser.Combinations of the above
It can also be included in computer readable medium.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of digital oscilloscope with track display function, it is characterised in that the oscillograph includes：
Waveform processing unit, the sampled data for being obtained to sampling carry out waveform processing, produce multiframe Wave data；
Track storage control unit, for receiving multiframe Wave data, one is extracted per N frames Wave data during oscillograph is run
Frame writes the first trajectories storage as a frame track, and reads the frame track to control from first trajectories storage
Device；And during oscillograph is run, deposited the second track of write-in in real time using each frame Wave data of reception as a frame track
Reservoir, and stop sampling period in oscillograph and read a frame track to controller from second trajectories storage；
First trajectories storage, newly write after being handled for only storage track storage control unit the extraction of N frame Wave datas
One frame track；
Second trajectories storage, the frame track being newly written for only storage track storage control unit；
Controller, for controlling read-write of the track storage control unit to the first trajectories storage, the second trajectories storage, and will
The track that track storage control unit is read is sent to display unit；
Display unit, the track for being sent according to controller carry out track and shown.
2. oscillograph according to claim 1, it is characterised in that the waveform processing unit, for what is obtained to sampling
The amplitude of sampled data and/or when base handled.
3. oscillograph according to claim 1, it is characterised in that the track storage control unit, specifically for showing
During ripple device is run, second trajectories storage is controlled directly to cover old track with the frame track being newly written, with only
The current newest track of storage.
4. oscillograph according to claim 1, it is characterised in that
The oscillograph also includes waveform drawing unit, for obtaining each frame Wave data caused by waveform processing unit, paints
Waveform is made；
The display unit is additionally operable to during oscillograph is run and stopped sampling period, according to caused by waveform drawing unit
Waveform carries out waveform and shown, shown waveform is the history superposition of multiframe Wave data.
5. oscillograph according to claim 4, it is characterised in that
The display unit stops sampling period in oscillograph and shows that coming from for the controller transmission is used for the storage of the second track
The last frame track of device；
The last frame track comes from same sampled data with the last frame Wave data in shown waveform.
6. oscillograph according to claim 1, it is characterised in that the oscillograph also includes：
3rd trajectories storage, the frame track being newly written for only storage track storage control unit；
The track storage control unit, using each frame Wave data of reception as a frame track, is handed over during oscillograph is run
Alternately write in second trajectories storage and the 3rd trajectories storage.
7. oscillograph according to claim 6, it is characterised in that
The track storage control unit, specifically for during oscillograph is run, controlling the 3rd trajectories storage with most
The frame track newly write directly covers old track, only to store current newest track.
8. oscillograph according to claim 7, it is characterised in that
When the second trajectories storage, which writes frame track midway, stops sampling, the track storage control unit reads the 3rd rail
The frame track preserved in mark memory is shown to controller to track；
When the 3rd trajectories storage, which writes frame track midway, stops sampling, the track storage control unit reads the second rail
The frame track preserved in mark memory is shown to controller to track.
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| CN201210537423.8A CN103869127B (en) | 2012-12-12 | 2012-12-12 | A kind of digital oscilloscope with track display function |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108445275A (en) * | 2017-02-16 | 2018-08-24 | 苏州普源精电科技有限公司 | A kind of method that tracing waveform is average, equipment and oscillograph |
| CN109142834B (en) * | 2017-06-19 | 2022-01-28 | 北京普源精电科技有限公司 | Amplitude weight obtaining method and device for track drawing and oscilloscope |
| CN109145728B (en) * | 2018-07-12 | 2020-06-16 | 深圳市鼎阳科技股份有限公司 | Afterglow blanking method and device and computer readable storage medium |
| CN109165171B (en) * | 2018-08-10 | 2022-12-23 | 电子科技大学 | Self-adaptive fast digital waveform imaging method |
| CN110009980B (en) * | 2019-03-28 | 2021-05-04 | 北京科技大学 | Oscilloscope interactive teaching method and system |
| CN111003017B (en) * | 2019-12-12 | 2021-08-27 | 江西日月明测控科技股份有限公司 | Method, system, storage medium and device for positioning third rail positioning point |
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| CN103869127A (en) | 2014-06-18 |
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