CN110174130A - A kind of digital oscilloscope three-dimensional waveform display methods linear based on double gradual changes - Google Patents
A kind of digital oscilloscope three-dimensional waveform display methods linear based on double gradual changes Download PDFInfo
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- CN110174130A CN110174130A CN201910464095.5A CN201910464095A CN110174130A CN 110174130 A CN110174130 A CN 110174130A CN 201910464095 A CN201910464095 A CN 201910464095A CN 110174130 A CN110174130 A CN 110174130A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D7/00—Indicating measured values
- G01D7/005—Indication of measured value by colour change
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The digital oscilloscope three-dimensional waveform display methods linear based on double gradual changes that the invention discloses a kind of, on the basis of three-dimensional mapping display, by carrying out data-optimized operation to three-dimensional mapping database, the brightness regulation and color setting of three-dimensional waveform are realized with double gradual change linear modes, to realize the display of three-dimensional waveform under monochromatic system mode or across colour system mode, to have more preferable identification, and greatly facilitates user and capture and observe abnormal signal.
Description
Technical field
The invention belongs to digital oscilloscope technical fields, more specifically, are related to a kind of number linear based on double gradual changes
Word oscillograph three-dimensional waveform display methods.
Background technique
Probability of the signal in some particular moment or amplitude appearance in nature is all different, even at present
High quality periodic signal caused by the signal source of full accuracy, also due to the reason of transmission line or environment etc., and
Show the inconsistency of probability.As the complexity of measured signal rises, the cyclic stationary characteristic of signal is destroyed, signal
Instantaneous non-stationary property start to highlight, it is each to show as usually adulterating jagged, harmonic wave, noise, modulating wave etc. in periodic signal
Kind transient state abnormal signal.
Using digital oscilloscope as the time domain measurement field of representative, measured signal is adopted by analog-digital converter (ADC)
Sample, storage, and allow waveform stabilization to be displayed on the screen by trigger circuit.Thus, inconsistency for signal or instantaneous
The observation of abnormal signal becomes a critical issue of time domain measurement, it can be made to be shown in oscillograph by three-dimensional mapping techniques
In screen.This is not only to observe this kind of abnormal signal, and the display mode for needing to give full play to digital oscilloscope makes
User can stablize and clearly see.
So-called three-dimensional waveform is exactly that waveform on screen not only embodies basic time and amplitude information, also reflects
Probabilistic information under the conditions of each time-amplitude out, i.e., add up several waveforms whithin a period of time, in the storage of three-dimensional database
The frequency of occurrence of each location point on screen in this period is recorded in unit.The effect of three-dimensional waveform database is storage system
The statistics number that waveform occurs under different sampling stages and amplitude perturbations in system display refresh interval.According to system liquid crystal
The resolution ratio of display screen marks off one piece of storage region, each storage unit corresponds to one on display screen in storage region
Pixel.If waveform number inswept under sometime amplitude perturbations is more, the value corresponded in storage unit is bigger, screen
Upper respective pixel will be shown with deeper color, therefore the total data stored in three-dimensional waveform database can be regarded as
One width contains the 3-D image of waveform statistical information.
It needs to turn by color shift control module as shown in Figure 1, three-dimensional waveform maps the three-dimensional database to be formed
It is changed to screen and shows required RGB color information.During three-dimensional database carries out color conversion, wave is can be set in user
Color that shape is shown simultaneously adjusts brightness shown by three-dimensional waveform.The two functions are able to use family and clearly easily observe screen
The feature or exception of waveform in curtain.
Existing brightness regulation embodiment: in the case where oscillograph is set as fluorescence mode, the three-dimensional information of waveform is to pass through
The gray scale of monochromatic system color embodies.User can be by being arranged different tonal gradation, to realize brightness that three-dimensional waveform is shown
It adjusts.Tonal gradation can be adjusted to H100 from H1, and 100 grades altogether.When being adjusted to H100, the waveform of all probability for being greater than 0 is most
It is bright；When gray scale is adjusted to H1, the waveform of all probability for being greater than 0 is most dark.Brightness value follows minimum visible not less than human eye
Intensity level, it is maximum to be less than the displayable intensity level of system.The transformation curve that current with good grounds Design of Gray Scale goes out, such as Fig. 2 institute
Show.
Horizontal axis is the hit probability after normalization in Fig. 2.Under different tonal gradations, brightness increases different hit probabilities
Rate is different.It ensure that at different brightnesses, waveform still has discrimination.But the adjusting algorithm realized in Fig. 2, to institute
Some tonal gradations all cover all brightness degrees, can not be to the waveform (such as periodic signal) for being always maintained at high hit probability
There is good regulating effect.This is because addition of waveforms probability is all very high, it may be shown as always most bright under different gray scales,
Brightness regulation will lose meaning.
The existing color plan of establishment: fluorescence mode is since variable range is smaller (8bit, altogether 256 grades), and small range
The change of brightness can not allow user to distinguish variation corresponding to different probability well.In order to show that waveform three-dimensional information more
Add protrusion, simple gray scale adjusting is no longer satisfied demand.Therefore, it at present from colour system expansion, proposes aobvious across colour system
Show scheme, the color of display is set using color temperature mode.It is then that waveform has been extended to polychrome from monochromatic system under color temperature mode
System's display, the three-dimensional information of waveform are embodied by the gradual change of color.It, can be with since RGB color information is made of 24bit
It allows different hit probabilities across large-scale rgb value, waveform is allowed more to have a sense of hierarchy.More conducively user observes the different probability of waveform
Information.According to the information of RGB, following hit probability is designed with the RGB variation pattern of 24bit, as shown in table 1.
Table 1 is Wave data and the colour temperature data conversion table of comparisons；
| Waveform probability | (R, G, B) value | Variation tendency | Color |
| 0 | (0、0、0) | 0 | Black |
| 1~64 | (0,0,255)~(0,255, | G step value | Blue~cyan |
| 64~128 | (0,255,255)~(0, | B step value | Cyan~green |
| 128~192 | (0,255,0)~(255, | R step value | Green~yellow |
| 192~255 | (255,255,0)~(255, | G step value | Yellow~red |
, table 1-
The RGB conversion value that table 1 is gray scale when being 50%, non-normalized hit-count change from 0 to 255.When gray value is small
When 50%, the color step value that blue arrives green to cyan again will reduce, and gray value is smaller, and step value can be smaller, and from
Green will increase to red step value, this allows for being in blue to green after most waveform probabilistic information is converted to RGB
The part of color.On the contrary, the color step value that blue arrives green to cyan again will will increase, gray value when gray value is greater than 50%
Bigger, step value can be bigger, and can reduce from green to red step value, so that waveform color is close toward red.Work as gray scale
When being 1%, waveform is all shown as blue, and when gray scale is 100%, waveform is all shown as red.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of digital oscilloscopes linear based on double gradual changes
Three-dimensional waveform display methods, on the basis of three-dimensional mapping display, by carrying out data-optimized behaviour to three-dimensional mapping database
Make, realizes that the brightness regulation of three-dimensional waveform and color setting can be shown in a manner of more preferable identification by double gradual change linear modes
Out, user is greatly facilitated to capture and observe abnormal signal.
For achieving the above object, a kind of digital oscilloscope three-dimensional waveform display side linear based on double gradual changes of the present invention
Method, which comprises the following steps:
(1), measured signal is accessed digital oscilloscope by user, opens three-dimensional waveform display pattern；
(2), the size of the gray value H, H of user setting gray scale adjustment module are from 1% to 100%；Waveform is set and shows mould
Formula: monochromatic system mode or across colour system mode；
(3), the probabilistic information of three-dimensional waveform is calculated
According to the resolution ratio of liquid crystal display, digital oscilloscope is arranged a three-dimensional database, each in three-dimensional database
A storage unit corresponds to a pixel on liquid crystal display；
Digital oscilloscope adds up several three-dimensional waveforms whithin a period of time, records in the storage unit of three-dimensional database
In this period on screen each location point frequency of occurrence, and the probabilistic information as three-dimensional waveform；
(4), under monochromatic system mode, digital oscilloscope starts three-dimensional waveform and maps and show
The probabilistic information of three-dimensional waveform is first calculated new brightness value L by following formula by gray scale adjustment module；
Wherein, P is the probabilistic information of three-dimensional waveform, and b and k are intermediate variable, and H is gray-level value, λ1~λ5For constant；
Three-dimensional waveform mapping is carried out further according to brightness value L, three-dimensional waveform is carried out after mapping and is shown；
(5), under across colour system mode, digital oscilloscope starts three-dimensional waveform mapping
The probabilistic information of three-dimensional waveform is converted the letter of the color based on tri- base colors of R, G, B by gray scale adjustment module
Then breath carries out equivalent variation to one or more of tri- base colors of R, G, B, if to tri- base colors of R, G, B
One or both of color carry out equivalent variation, the result of equivalence variation is equivalent or trend is identical, then the knot of equivalent variation
The three-dimensional waveform that fruit carries out monochromatic system shows, if in tri- base colors of R, G, B two kinds of colors or three kinds of colors etc.
The result non-equivalence or trend for being worth variation are on the contrary, then three-dimensional waveform of the result progress across colour system of equivalent variation is shown.
Goal of the invention of the invention is achieved in that
A kind of digital oscilloscope three-dimensional waveform display methods linear based on double gradual changes of the present invention, in three-dimensional mapping display
On basis, by carrying out data-optimized operation to three-dimensional mapping database, three-dimensional waveform is realized with double gradual change linear modes
Brightness regulation and color are arranged, the display of three-dimensional waveform under Lai Shixian monochromatic system mode or across colour system mode, to have more preferable
Identification, and greatly facilitate user and capture and observe abnormal signal.
Detailed description of the invention
Fig. 1 is the displaying principle figure of three-dimensional waveform mapping；
Fig. 2 is the brightness transition curve in conventional method under different gray scales；
Fig. 3 is the digital oscilloscope three-dimensional waveform display methods flow chart linear based on double gradual changes；
Fig. 4 is based on the linear luminance of double gradual changes and brightness transition curve；
Fig. 5 is the Wave data and colour temperature data conversion comparative diagram after optimization.
Specific embodiment
A specific embodiment of the invention is described with reference to the accompanying drawing, preferably so as to those skilled in the art
Understand the present invention.Requiring particular attention is that in the following description, when known function and the detailed description of design perhaps
When can desalinate main contents of the invention, these descriptions will be ignored herein.
Embodiment
Fig. 3 is the digital oscilloscope three-dimensional waveform display methods flow chart linear based on double gradual changes.
In the present embodiment, as shown in figure 3, a kind of digital oscilloscope three-dimensional waveform linear based on double gradual changes of the present invention is aobvious
Show method, comprising the following steps:
Measured signal is accessed digital oscilloscope by S1, user, opens three-dimensional waveform display pattern；
S2, user setting gray scale adjustment module gray value H, H size from 1% to 100%；Waveform is set and shows mould
Formula: monochromatic system mode or across colour system mode；
S3, the probabilistic information for calculating three-dimensional waveform
According to the resolution ratio of liquid crystal display, digital oscilloscope is arranged a three-dimensional database, each in three-dimensional database
A storage unit corresponds to a pixel on liquid crystal display；
Digital oscilloscope adds up several three-dimensional waveforms whithin a period of time, records in the storage unit of three-dimensional database
In this period on screen each location point frequency of occurrence, and the probabilistic information as three-dimensional waveform；
S4, under monochromatic system mode, digital oscilloscope starts three-dimensional waveform and maps and show
The probabilistic information of three-dimensional waveform is first calculated new brightness value L, improved brightness regulation by gray scale adjustment module
Formula are as follows:
Wherein, P is the probabilistic information of three-dimensional waveform, and b and k are intermediate variable, and H is gray-level value；
Three-dimensional waveform mapping is carried out further according to brightness value L, three-dimensional waveform is carried out after mapping and is shown；
In the present embodiment, when different under base gear, since the sample rate of oscillograph is different, but three-dimensional mapping
Mapping time is fixed.This will lead to when different under base gear, and the probabilistic information of waveform of the same race has biggish difference, most
Whole user can observe that brightness of the waveform of the same race when different under base gear is inconsistent or difference in brightness is larger.Therefore, it is necessary to
Brightness curve is adjusted.Concrete mode be by it is each when base gear under, all brightness values are different plus a biasing
When the increased biasing of base gear it is different, to realize mutually assimilation of brightness when different under base.
As shown in figure 4, each brightness curve slope is all different, tonal gradation is got over closer to H50, brightness rate of rise
Greatly, closer to H1 or H100, the slope of brightness curve is gradually become smaller.And for the starting point of each curve, tonal gradation is got over
Greatly, variation range is bigger；For terminal, tonal gradation is bigger, and variation range is smaller.Brightness regulation curve in Fig. 4, can
To limit maximum brightness under different gray scales, so that the high probability point improved in Fig. 2 is always maintained at highlighted problem.
S5, under across colour system mode, digital oscilloscope start three-dimensional waveform mapping
The probabilistic information of three-dimensional waveform is converted the letter of the color based on tri- base colors of R, G, B by gray scale adjustment module
Then breath carries out equivalent variation to one or more of tri- base colors of R, G, B, if to tri- base colors of R, G, B
One or both of color carry out equivalent variation, the result of equivalence variation is equivalent or trend is identical, then carries out monochromatic system
Three-dimensional waveform shows, if not to the result of the equivalent variations of two kinds of colors or three kinds of colors in tri- base colors of R, G, B
Equivalent or trend is on the contrary, then three-dimensional waveform of the result progress across colour system of equivalent variation is shown.
Wherein, the process of equivalent transformations are as follows: for example by the value of R and B in tri- base colors of R, G, B simultaneously according to probability
An equal amount of value is added and subtracted in variation, and the value variation successor for reaching R and B is so in the same size, and the value of G remains 0, then root on screen
The purple waveform that different brightness are shown according to waveform probability realizes that the three-dimensional waveform of monochromatic system is shown.Similarly, if R, G, B tri-
Two or three of color in a base color is then shielded in the variation (variation size or variation tendency are different) for carrying out non-equivalent
The waveform that can show multiple color mixing on curtain according to waveform probability, realizes the three-dimensional waveform across colour system and shows.
Under across colour system mode, when user adjusts gray value H, the variation that can adjust tri- base color values of R, G, B becomes
Gesture, to generate different color changes according to different probabilistic informations.
In the present embodiment, on multi-tiled display, because colour system span is too big and colour system coincidence has led to extremely difficult differentiation
Signal between different channels.Then following holographic colour temperature display optimization scheme is designed.Program colour system span scope compared with
It is small, and the color between different channels has stronger discrimination, as figure 5 illustrates.
Under color temperature mode after optimization, brightness degree is divided into 100 parts by the color gradient in each channel, from left to right
Brightness value is respectively represented from 1% to 100%, wherein color RGB information value corresponding to per two adjacent brightness values is that have
Multiple interval of values.In addition, brightness value 0 is then shown as black, that is, need to show without waveform.In conjunction with the gray scale of Fig. 4
Adjustment curve, every curve all cover one section of brightness value section [L corresponding to all hit probability Pmin,Lmax], institute is right
The section that the color RGB information value answered just is covered by colour brightness gradual change.Thereby realize the gray scale tune under color temperature mode
Section, significantly increases the projecting degree of Wave anomaly or feature.
Although the illustrative specific embodiment of the present invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the present invention is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the spirit and scope of the present invention in, these
Variation is it will be apparent that all utilize the innovation and creation of present inventive concept in the column of protection.
Claims (2)
1. a kind of digital oscilloscope three-dimensional waveform display methods linear based on double gradual changes, which comprises the following steps:
(1), measured signal is accessed digital oscilloscope by user, opens three-dimensional waveform display pattern；
(2), the size of the gray value H, H of user setting gray scale adjustment module are from 1% to 100%；Waveform display pattern is set: single
Colour system mode or across colour system mode；
(3), the probabilistic information of three-dimensional waveform is calculated
According to the resolution ratio of liquid crystal display, digital oscilloscope is arranged three three-dimensional databases, each in three-dimensional database
Storage unit corresponds to a pixel on liquid crystal display；
Digital oscilloscope adds up several three-dimensional waveforms whithin a period of time, this section is recorded in the storage unit of three-dimensional database
In time on screen each location point frequency of occurrence, and the probabilistic information as three-dimensional waveform；
(4), under monochromatic system mode, digital oscilloscope starts three-dimensional waveform and maps and show
The probabilistic information of three-dimensional waveform is first calculated new brightness value L by following formula by gray scale adjustment module；
Wherein, P is the probabilistic information of three-dimensional waveform, and b and k are intermediate variable, and H is gray-level value, λ1~λ5For constant；
Three-dimensional waveform mapping is carried out further according to brightness value L, three-dimensional waveform is carried out after mapping and is shown；
(5), under across colour system mode, digital oscilloscope starts three-dimensional waveform mapping
The probabilistic information of three-dimensional waveform is converted the colouring information based on tri- base colors of R, G, B by gray scale adjustment module, so
Equivalent variation is carried out to one or more of tri- base colors of R, G, B afterwards, if to one in tri- base colors of R, G, B
Kind and two kinds of colors carry out equivalent variations, and the three-dimensional waveform that the result that equivalence changes carries out monochromatic system is shown, if to R, G, B
The result non-equivalence or trend of the equivalent variation of two kinds of colors or three kinds of colors in three base colors are on the contrary, then equivalent variation
Result carry out the three-dimensional waveform across colour system show.
2. a kind of digital oscilloscope three-dimensional waveform display methods linear based on double gradual changes according to claim 1, special
Sign is, under across the colour system mode, when user adjusts gray value H, the variation that can adjust tri- base color values of R, G, B becomes
Gesture, to generate different color changes according to different probabilistic informations.
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