CN105954559A - Method and device for improving waveform capture rate of oscilloscope, and oscilloscope - Google Patents
Method and device for improving waveform capture rate of oscilloscope, and oscilloscope Download PDFInfo
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- CN105954559A CN105954559A CN201610278128.3A CN201610278128A CN105954559A CN 105954559 A CN105954559 A CN 105954559A CN 201610278128 A CN201610278128 A CN 201610278128A CN 105954559 A CN105954559 A CN 105954559A
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- signal data
- input signal
- trigger condition
- search
- gather
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
- G01R13/0209—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form in numerical form
Abstract
The invention discloses a method and device for improving the waveform capture rate of an oscilloscope, and the oscilloscope. The method comprises the steps of: collecting and storing input signal data; detecting whether the input signal data meets a set triggering condition; if yes, continuously collecting the input signal data until the collection of one frame of signal data is completed; and when the input signal data is detected to meet the set triggering condition, simultaneously carrying out triggered searching on the collected input signal data. In this way, the signal data collection and the triggered searching are parallel in time, and the time for processing one frame of signal data is shortened, so that the waveform capture rate is effectively improved, and the dead time of the oscilloscope is reduced.
Description
Technical field
The application relates to oscillograph field, is specifically related to a kind of improve the method for oscilloscope waveform capturing rate, dress
Put and oscillograph.
Background technology
The modern times test fields of measurement, due to the design of electronic product become increasingly complex, integrated level more and more higher,
Engineer is when using oscillograph circuit to carry out fault diagnosis with detection, and oscillographic waveform capture rate becomes
One the most important factor affecting efficiency.When using oscillograph that hardware circuit is carried out malfunction elimination,
In addition to requiring oscillograph and there is abundant triggering type, also require Dead Time during oscillograph capture waveform
The smaller the better, thus it is easier to some extremely abnormal signals being difficult to again reappear of capture, and this needs oscillography
Device must possess the ability quickly processing captured data.
As it is shown in figure 1, in prior art, oscillograph is after starting data acquisition, while gathering data
Judge to trigger the most effectively, if triggering effectively, continuing to gather data, otherwise continuing waiting for triggering；When touching
Restart triggering search after sending out effectively and having gathered frame data, then wait and trigger that search is complete restarts afterwards
The subsequent treatment such as wave data processing, waveform mapping.
Oscillograph process from signals collecting to Wave data shows this cycle, is referred to as capturing the cycle, front
After one capture end cycle, oscillograph can capture next new waveform.Digital oscilloscope will capture week
The most of the time of phase is all used for the post processing to Wave data, in this processing procedure, at oscillograph
In invalidated acquisitions state, it is impossible to monitoring measured signal.
From the above, it can be seen that existing oscillograph touches after the data having gathered a capture cycle again
Sending out search, this mode makes total processing time of a frame Wave data relatively long, so that waveform is caught
The rate that obtains is relatively low, Dead Time is bigger.
Summary of the invention
For solve the problems referred to above, the application provide a kind of improve the method for oscilloscope waveform capturing rate, device and
Oscillograph.
According to the first aspect of the application, the application provides a kind of method improving oscilloscope waveform capturing rate,
Comprise the following steps:
Gather and store input signal data；
Detect whether described input signal data meets the trigger condition set；
When the trigger condition that described input signal data meets described setting being detected, continue collection described defeated
Enter signal data until frame signal data are collected complete；
While the trigger condition that described input signal data meets described setting being detected, to being collected
Input signal data carry out trigger search.According to the second aspect of the application, the application provides a kind of raising
The device of oscilloscope waveform capturing rate, including:
Gather memory module, be used for gathering and storing input signal data；
Trigger condition detection module, for detecting whether described input signal data meets the trigger condition set；
When trigger condition detection module detects that described input signal data is unsatisfactory for the trigger condition set, gather
Memory module carries out the collection of input signal data always, sets when detecting that described input signal data meets
Trigger condition time, gather memory module and gathered and stop collection after a frame input signal data；Trigger search
At trigger condition detection module, module, for detecting that described input signal data meets the triggering of described setting
While condition, the input signal data being collected collection memory module carries out triggering search.
According to the third aspect of the application, the application provides a kind of oscillograph, and it includes above-mentioned raising oscillography
The device of device waveform capture rate.
The application provides the benefit that:
According to the raising method of oscilloscope waveform capturing rate, device and the oscillograph of above-mentioned enforcement, due to when detection
When meeting the trigger condition of described setting to described input signal data, gather described input signal data, and
And, while the trigger condition that described input signal data meets described setting being detected, to being collected
Input signal data carry out trigger search, therefore gather signal data with trigger search for is parallel in time
, thus the process time processing frame signal data shorten, therefore, it is possible to be effectively improved waveform capture rate with
And reduce oscillographic Dead Time.
Accompanying drawing explanation
Fig. 1 is oscillographic signal data acquisition handling process schematic diagram in prior art；
Fig. 2 is the schematic flow sheet of the method improving oscilloscope waveform capturing rate of a kind of embodiment of the application；
Fig. 3 is the structural representation of the device improving oscilloscope waveform capturing rate of a kind of embodiment of the application.
Detailed description of the invention
Combine accompanying drawing below by detailed description of the invention the application is described in further detail.
It will be noted from fig. 1 that in prior art, signal data acquisition and triggering search are serial process,
I.e. trigger what search was to wait for just proceeding by after a frame waveform data acquisition completes, this serial process
Mode makes total processing time of frame waveform data relatively long, so that waveform capture rate is relatively low,
Dead Time is bigger.
The problem on the low side for solving oscilloscope waveform capturing rate, the application one provides one to improve oscillography in implementing
The method of device waveform capture rate, compared with prior art, the application by triggering search in advance, is allowed to and signal
Data acquisition is carried out parallel, when, after enabling signal data acquisition, once triggering effectively, then the most also start and touch
Send out search.This method that will trigger search and signal data acquisition parallel processing so that frame signal data
The process time shorten, therefore, it is possible to be effectively improved waveform capture rate, reduce oscillograph Dead Time etc..Under
Illustrating.
Refer to Fig. 2, in one embodiment, the method improving oscilloscope waveform capturing rate includes step S, under
Mask body explanation.
Step S01, gathers and stores input signal data.
Step S03, detects whether above-mentioned input signal data meets the trigger condition set.Above-mentioned when detecting
When input signal data meets the trigger condition of a setting, carry out step S05, continue Gather and input signal data.
Oscillograph can be digital oscilloscope in one embodiment, and therefore input signal data is after analog-digital converter
Be converted to digital signal data, described digital signal be stored as Wave data to gather data.Detecting
While above-mentioned input signal data meets the trigger condition of setting, also carry out step S07, to collected
Input signal data carries out triggering search.
In step S03, when detecting that input signal data is unsatisfactory for the trigger condition set, then continue
Wait until triggering effectively, i.e. continue whether detection input signal meets the trigger condition set.
After having carried out step S05, step S09 can be carried out, detect whether to gather a complete frame input signal data,
The most all gathering complete if detecting, carrying out step S05 the most again, continuing Gather and input signal data, and
Next detect whether to gather a complete frame input signal data.
After having carried out step S07, step S11 can be carried out, detect whether touching of a frame input signal data
Send out search.When detecting that being not fully complete the triggering to a frame input signal data searches for, all re-start step
S07, proceeds to trigger search.It should be noted that before and after step S09 and S11, sequentially it doesn't matter,
Even both can be parallel.
When step S09 detects that a frame input signal data all gathers complete and step S11 and detects that it is the completeest
When having become triggering search, then carry out step S13, to the input signal number completing to trigger search collected
According to carrying out subsequent treatment.In one embodiment, subsequent treatment can be by wave data processing and waveform reflects
Penetrate.
Relatively, disclosed herein as well is a kind of oscillograph, oscillograph includes that a kind of waveform that improves is caught
Obtain the device of rate, as it is shown on figure 3, the device improving oscilloscope waveform capturing rate of the application includes that collection is deposited
Storage module 01, trigger condition detection module 03, triggering search module 07, first detection module 09, second
Detection module 11 and subsequent treatment module 13, be specifically described below.
Gather memory module 01 to be used for gathering and storing input signal data.
Trigger condition detection module 03 is for detecting whether described input signal data meets the triggering bar set
Part；When trigger condition detection module 03 detects that above-mentioned input signal data is unsatisfactory for the trigger condition set,
Gather memory module 01 and carry out the collection of input signal data always, when detecting that above-mentioned input signal data is full
During the trigger condition that foot sets, gather after memory module 01 has gathered a frame input signal data and stop gathering.
Trigger search module 07 for detecting that input signal data meets institute at trigger condition detection module 03
While the trigger condition set, the input signal data being collected collection memory module 01 triggers
Search.
First detection module 09 is for for detecting whether gather a complete frame input signal data.When the first inspection
Survey module inspection 09 and detect when a defeated signal data of frame does not gathers complete, gather memory module 01 and continue to gather
Input signal data, and first detection module continues to detect whether to gather complete frame signal data.
Second detection module 11 is for detecting whether complete the triggering search of frame signal data.When the second detection
When module 11 detects the triggering search being not fully complete frame signal data, trigger search module 07 and proceed
Trigger search.
When first detection module 09, subsequent treatment module 13 is for detecting that a frame input signal data all gathers
Complete and the second detection module 11 detects when this frame input signal data is completed triggering search, to institute
The input signal data completing to trigger search collected carries out subsequent treatment.In one embodiment, follow-up
Processing module 13 can be by wave data processing and waveform maps.
The application is carried out parallel by triggering the search collection with signal data, carries out the collection of signal data,
While carrying out the signal data collected triggering search, so that the process time of frame signal data becomes
Short, therefore, it is possible to be effectively improved waveform capture rate and reduce oscillographic Dead Time.
Above content is to combine the further description that the application is made by specific embodiment, it is impossible to recognize
Determine the application be embodied as be confined to these explanations.Ordinary skill for the application art
For personnel, on the premise of conceiving without departing from the present application, it is also possible to make some simple deductions or replace
Change.
Claims (9)
1. the method improving oscilloscope waveform capturing rate, it is characterised in that comprise the following steps:
Gather and store input signal data；
Detect whether described input signal data meets the trigger condition set；
When the trigger condition that described input signal data meets described setting being detected, continue collection described defeated
Enter signal data until frame signal data are collected complete；
While the trigger condition that described input signal data meets described setting being detected, to being collected
Input signal data carry out trigger search.
2. the method improving oscilloscope waveform capturing rate as claimed in claim 1, it is characterised in that also
Comprise the following steps:
Detect whether to gather a complete frame input signal data；
Detect whether the triggering search of a frame input signal data；
When detect a frame input signal data all gather complete and be completed triggering search time, adopt described
Collect to complete trigger search input signal data carry out subsequent treatment.
3. the method improving oscilloscope waveform capturing rate as claimed in claim 2, it is characterised in that also
Comprise the following steps:
When detect do not gathered a frame input signal data time, continue Gather and input signal data and detecting
Whether gather input signal data described in a complete frame；
When detection is not fully complete the triggering search of a frame input signal data, proceed to trigger search.
4. the method improving oscilloscope waveform capturing rate as claimed in claim 1, it is characterised in that also
Comprise the following steps:
When the trigger condition that described input signal data is unsatisfactory for described setting being detected, continue detection described
Whether input signal meets the trigger condition of described setting.
5. the device improving oscilloscope waveform capturing rate, it is characterised in that including:
Gather memory module, be used for gathering and storing input signal data；
Trigger condition detection module, for detecting whether described input signal data meets the trigger condition set；
When trigger condition detection module detects that described input signal data is unsatisfactory for the trigger condition set, gather
Memory module carries out the collection of input signal data always, sets when detecting that described input signal data meets
Trigger condition time, gather memory module and gathered and stop collection after a frame input signal data；
Trigger search module, for detecting that described input signal data meets institute at trigger condition detection module
While stating the trigger condition of setting, the input signal data being collected collection memory module triggers
Search.
6. the device improving oscilloscope waveform capturing rate as claimed in claim 5, it is characterised in that also
Including:
First detection module, for detecting whether gather a complete frame input signal data；
Second detection module, for detecting whether complete the triggering search of a frame input signal data；
When first detection module, subsequent treatment module, for detecting that a frame input signal data all gathers complete
And second detection module detect this frame input signal data be completed triggering search time, to being collected
Complete trigger search input signal data carry out subsequent treatment.
7. the device improving oscilloscope waveform capturing rate as claimed in claim 6, it is characterised in that institute
State collection memory module when first detection module detects that a frame input signal data does not gathers complete, continue
Gather and input signal data and first detection module continue to detect whether to gather a complete frame input signal number
According to；Described triggering search module is worked as the second detection module and the triggering search being not fully complete frame signal data detected
Time, proceed to trigger search.
8. the device improving oscilloscope waveform capturing rate as claimed in claim 5, it is characterised in that institute
State trigger condition detection module when detecting that described input signal data is unsatisfactory for the trigger condition of described setting
Time, continue to detect whether described input signal meets the trigger condition of described setting.
9. an oscillograph, it is characterised in that include carrying as according to any one of claim 5 to 8
The device of high oscilloscope waveform capturing rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278128.3A CN105954559A (en) | 2016-04-28 | 2016-04-28 | Method and device for improving waveform capture rate of oscilloscope, and oscilloscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278128.3A CN105954559A (en) | 2016-04-28 | 2016-04-28 | Method and device for improving waveform capture rate of oscilloscope, and oscilloscope |
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| CN105954559A true CN105954559A (en) | 2016-09-21 |
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| CN201610278128.3A Pending CN105954559A (en) | 2016-04-28 | 2016-04-28 | Method and device for improving waveform capture rate of oscilloscope, and oscilloscope |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226725A (en) * | 2017-12-29 | 2018-06-29 | 国网北京市电力公司 | Local discharge signal detection method and device |
| CN112466259A (en) * | 2020-12-24 | 2021-03-09 | 深圳市鼎阳科技股份有限公司 | Gray scale compensation method and device of oscilloscope |
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| CN105445514A (en) * | 2014-09-23 | 2016-03-30 | 史树元 | FPGA-based multiprocessor digital storage oscilloscope |
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| US6748335B2 (en) * | 2002-05-06 | 2004-06-08 | Tektronix, Inc. | Acquisition system for a multi-channel relatively long record length digital storage oscilloscope |
| CN101275973A (en) * | 2008-04-18 | 2008-10-01 | 电子科技大学 | Digital storage oscillograph with very high waveform capturing rate |
| CN103199870A (en) * | 2013-02-28 | 2013-07-10 | 电子科技大学 | Quick positioning device for trigger point |
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| CN108226725A (en) * | 2017-12-29 | 2018-06-29 | 国网北京市电力公司 | Local discharge signal detection method and device |
| CN112466259A (en) * | 2020-12-24 | 2021-03-09 | 深圳市鼎阳科技股份有限公司 | Gray scale compensation method and device of oscilloscope |
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Application publication date: 20160921 |