CN114252672A - Signal processing method, chip, signal display device and storage medium - Google Patents
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Abstract
The present application relates to a signal processing method, a chip, a signal display device, and a storage medium. The signal processing method comprises the following steps: acquiring a plurality of point data signals, wherein the point data signals comprise a first point signal of a first channel and a second point signal of a second channel; acquiring the position and the arrangement sequence of the display points according to the first point signal and the second point signal; acquiring the distance between adjacent display points according to the positions and the arrangement sequence of the display points; and acquiring the energy of each sub-waveform between the adjacent display points according to the distance between the adjacent display points, wherein the larger the distance between the adjacent display points is, the smaller the energy of each sub-waveform between the adjacent display points is. The waveform of the analog display device can be well fitted.
Description
Technical Field
The present disclosure relates to the field of signal display technologies, and in particular, to a signal processing method, a chip, a signal display device, and a storage medium.
Background
With the development of display devices such as oscilloscopes, digital signal processing techniques have emerged. The technology inputs an analog waveform into an analog-to-digital converter (ADC) after the analog waveform is amplified and attenuated by a front end. And finally drawing the waveform through a display by processing such as mathematical operation.
However, the waveform form drawn by the current digital signal processing technology is stiff and lively.
Disclosure of Invention
In view of the above, it is desirable to provide a signal processing method, a chip, a signal display device, and a storage medium capable of well fitting a waveform of an analog display device in order to solve the above-described problems.
A method of signal processing, the method comprising:
acquiring a plurality of point data signals, wherein the point data signals comprise a first point signal of a first channel and a second point signal of a second channel;
acquiring the position and the arrangement sequence of display points according to the first point signal and the second point signal;
acquiring the distance between adjacent display points according to the positions and the arrangement sequence of the display points;
and acquiring the energy of each sub-waveform between the adjacent display points according to the distance between the adjacent display points, wherein the larger the distance between the adjacent display points is, the smaller the energy of each sub-waveform between the adjacent display points is.
According to the signal processing method, firstly, the distance between adjacent display points is determined through a first point signal of a first channel and a second point signal of a second channel, then, the energy of each sub-waveform between the adjacent display points is obtained according to the distance between the adjacent display points, the larger the distance between the adjacent display points is, the smaller the energy of each sub-waveform between the adjacent display points is, and therefore distance-based bright-dark display is achieved, and waveform display is more vivid.
In one embodiment, the sub-waveform comprises a main wavy line and a wave halo surrounding the main wavy line;
the acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points comprises:
acquiring the energy of a main waveform line of each sub-waveform according to the distance between adjacent display points;
and acquiring corresponding energy of the waveform shadow according to the energy of the main waveform line of each sub-waveform, wherein the energy of the waveform shadow is sequentially reduced from the main waveform line to the outside in the same sub-waveform.
In this case, the waveform can be made more smooth.
In one embodiment, after obtaining the position and the arrangement order of the display points according to the first point signal and the second point signal, the method further includes:
and acquiring a first display time sequence of each sub-waveform between adjacent display points according to the arrangement sequence of the display points.
In one embodiment, after acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points, the method further includes:
and according to the first display time sequence of each sub-waveform, the energy of each sub-waveform is attenuated one by one.
At this time, an intra-frame afterglow may be formed.
In one embodiment, the obtaining the plurality of point data signals includes:
obtaining at least two groups of point data signals, wherein one group of point data signals form a frame waveform diagram which comprises a plurality of sub-waveforms;
after the energy of each sub-waveform between adjacent display points is acquired according to the distance between the adjacent display points, the method further comprises the following steps:
acquiring a second display time sequence of at least two frames of oscillograms corresponding to the at least two groups of point data signals;
and according to the second display time sequence, the energy of each sub-waveform of each frame waveform image is attenuated one by one.
At this time, a global afterglow effect can be formed.
In one embodiment, after acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points, the method further includes:
when at least two sub-waveforms are intersected, the energy of the intersected at least two sub-waveforms is superposed to obtain the energy at the intersection position.
At the moment, the waveform display is more vivid and lifelike through the superposition of the energy.
A signal processing chip is used for realizing the steps of the method.
A signal display apparatus, the apparatus comprising:
the signal acquisition module is used for acquiring a signal to be detected and converting the signal to be detected into the point data signal;
the signal processing chip is connected with the signal acquisition module and is used for realizing the steps of the method;
and the display module is connected with the signal processing chip and is used for displaying the sub-waveform image.
In one of the embodiments, the first and second electrodes are,
the signal acquisition module includes:
the analog-to-digital conversion unit is used for acquiring a detected signal and converting the detected signal into a digital signal;
the field programmable gate array unit is connected with the analog-to-digital conversion unit and the signal processing chip and is used for compressing and extracting the digital signals to form the point data signals;
and/or the presence of a gas in the gas,
the signal processing chip comprises a graphics processor.
A computer-readable storage medium, on which a computer program is stored which, in one embodiment, when being executed by a processor, carries out the steps of the above-mentioned method.
Drawings
Fig. 1 to 5 are schematic flow charts of signal processing methods in different embodiments;
fig. 6 is a block diagram showing the structure of a signal display device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms "first," "second," and the like as used herein may be used herein to describe various point signals, but these point signals are not limited by these terms.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
In one embodiment, referring to fig. 1, a signal processing method is provided, including:
step S100, a plurality of point data signals are obtained, where the point data signals include a first point signal of a first channel and a second point signal of a second channel.
Specifically, U may be acquired simultaneously by the analog-to-digital conversion unitxAnd UyTwo kinds of measuredSignal, UxAnd UyThe data are respectively collected through a first channel and a second channel of the analog-to-digital conversion unit.
Then, the analog-to-digital conversion unit is used for acquiring the detected signal U of the first channelxPerforming analog-to-digital conversion to form UxCorresponding digital signal and measured signal U acquired by second channelyPerforming analog-to-digital conversion to form UyA corresponding digital signal.
Thereafter, can be determined by UxCorresponding digital signal obtains first point signal uxFrom UyThe corresponding digital signal can obtain a second point signal uy。
Step S200, acquiring the position and the arrangement sequence of the display points according to the first point signal and the second point signal.
First point signal uxAnd a second point signal uyRespectively corresponding to the measured signals UxAnd UyWhereby the position (u) of the display point can be acquiredx，uy). Position of display point (u)x，uy) When displayed subsequently, convert to (U)x，Uy) And the actual display is performed.
Meanwhile, the analog-to-digital conversion unit collects multiple groups of U according to the preset frequencyxAnd UyThereby forming a plurality of display dots, and the arrangement order of each display dot may be according to each group UxAnd UyCorresponding first point signal uxAnd a second point signal uyThe acquisition time is determined in sequence. Each group UxAnd UyCorresponding first point signal uxAnd a second point signal uyThe acquisition time of each group U is measured by the analog-to-digital conversion unitxAnd UyIs determined.
Step S400, acquiring the distance between adjacent display points according to the positions and the arrangement sequence of the display points.
As an example, the location of the first display point may be (u)x1，uy1) The corresponding actual display position is (U)x1，Uy1) The position of the second display point may be (u)x2，uy2) Corresponding reality ofThe display position is (U)x2，Uy2) Then the distance between adjacent display points is { [ (U) at the time of subsequent displayx2)-(Ux1)]2+[(Uy2)-(Uy1)]2The squared value of.
Thereby, the distance between adjacent display points can be acquired.
Step S500, acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points, wherein the larger the distance between the adjacent display points is, the smaller the energy of each sub-waveform between the adjacent display points is.
The sub-waveforms between adjacent display points form the entire display waveform map.
In this embodiment, first, the distance between adjacent display points is determined by the first point signal of the first channel and the second point signal of the second channel, and then, the energy of each sub-waveform between adjacent display points is acquired according to the distance between adjacent display points, and the larger the distance between adjacent display points is, the smaller the energy of each sub-waveform between adjacent display points is, so that distance-based bright-dark display can be realized, and the waveform display is more vivid and lifelike.
In one embodiment, each sub-waveform between adjacent display points is designed to include a main waveform line and a waveform halo that surrounds the main waveform line.
At this time, referring to fig. 2, step S500 includes:
step S510, acquiring the energy of the main waveform line of each sub-waveform according to the distance between adjacent display points.
Here, the energy of the main wavy line is first determined so as to sequentially set the energy of the wavy halo outward from the main wavy line.
Step S520, acquiring corresponding energy of the wave shadow according to the energy of the main wave line of each sub-waveform, wherein the energy of the wave shadow is sequentially reduced from the main wave line to the outside in the same sub-waveform.
After the energy of the main waveform line is determined, the energy of the set waveform shadow is sequentially reduced outwards from the main waveform line, so that the waveform shadow is formed. Therefore, the present embodiment can make the waveform more rounded.
As an example, within the same sub-waveform, the energy of the main wavy line and the energy of the wave shadow may be made to follow a gaussian distribution according to a computer algorithm.
In an embodiment, after step S200, please refer to fig. 3, which further includes:
step S300, acquiring a first display time sequence of each sub-waveform between adjacent display points according to the arrangement sequence of the display points.
As explained earlier, the order of arrangement of each display dot may be for each group U by the analog-to-digital conversion unitxAnd UyIs determined. The first display time sequence of each sub-waveform can be determined according to the arrangement sequence of the display points, so that the first display time sequence of each sub-waveform can be consistent with the collection time sequence of the analog-to-digital conversion unit for the detected signal.
It is understood that the order of steps S300, S400 and S500 is not limited.
Further, in this embodiment, after step S500, the method further includes:
step S600, according to the first display timing sequence of each sub-waveform, the energy of each sub-waveform is attenuated one by one.
At this time, the sub-waveform displayed first may be made gradually dark and then disappear first, and then the sub-waveform displayed later may be made gradually dark and then disappear, thereby forming an afterglow within a frame.
In one embodiment, referring to fig. 4, step S100 includes:
at least two groups of point data signals are obtained, one group of point data signals form a frame waveform diagram, and the waveform diagram comprises a plurality of sub-waveforms.
At this time, the two sets of the acquired dot data signals may form at least two frame waveform patterns.
After step S500, the method further includes:
step S700, a second display timing sequence of at least two frames of oscillograms corresponding to at least two groups of point data signals is obtained.
Specifically, the second display timing of each frame waveform corresponding to each group of point data signals may be determined according to the acquisition timing of each group of point data signals.
Step S800, according to the second display timing, attenuating the energy of each sub-waveform of each frame waveform diagram one by one.
At this time, the waveform image of the previous frame displayed first may gradually become dark first and then disappear, and the waveform image of the next frame displayed later may gradually become dark and then disappear, thereby forming a global afterglow effect.
In an embodiment, after step S500, referring to fig. 5, the method further includes:
and S900, when the at least two sub-waveforms are intersected, overlapping the energy of the at least two intersected sub-waveforms to obtain the energy at the intersection position.
Further, the respective sub-waveforms are displayed at different timings. At this time, if the energy of each sub-waveform is attenuated as in the above embodiment, the energy of at least two intersecting sub-waveforms at the same time is superimposed, so as to obtain the energy at the intersection position.
The embodiment enables the waveform display to be more vivid and lifelike through the superposition of the energy.
It should be understood that although the various steps in the flowcharts of fig. 1-5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. Unless explicitly stated otherwise herein, the steps are not performed in a strict order,
the steps may be performed in other orders. Moreover, at least some of the steps in fig. 1-5 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps or stages.
In an embodiment, there is also provided a signal processing chip comprising steps for implementing the method of any of the above.
In one embodiment, a signal display device is further provided, which includes a signal acquisition module 100, a signal processing chip 200 and a display module 300.
The signal acquisition module 100 is configured to acquire a signal under test and convert the signal under test into a point data signal.
The signal processing chip 200 is used to implement the steps of the method of any of the above.
The display module 300 is connected to the signal processing chip 200 for displaying the sub-waveform image. As an example, the display module 300 may be a liquid crystal display.
In one embodiment, the signal acquisition module 100 includes an analog-to-digital conversion unit 110, a field programmable gate array unit 120.
The analog-to-digital conversion unit 110 is used for collecting a signal to be tested and converting the signal to be tested into a digital signal.
The field programmable gate array unit 120 is connected to the analog-to-digital conversion unit 110 and the signal processing chip 200, and is configured to perform compression and decimation on the digital signal to form a point data signal.
As an example, the analog-to-digital conversion unit 110 may have a first channel and a second channel. The field programmable gate array unit 120 may include a sampling subunit 121 and a compressing subunit 122.
Specifically, the analog-to-digital conversion unit 110 may simultaneously acquire UxAnd UyTwo signals to be measured, UxAnd UyRespectively through the first channel and the second channel of the analog-to-digital conversion unit 110.
Then, the analog-to-digital conversion unit 110 converts the detected signal U collected by the first channelxPerforming analog-to-digital conversion to form UxThe corresponding digital signal is sent to the field programmable gate array unit 120, and the measured signal U collected by the second channel is sent to the field programmable gate array unit 120yPerforming analog-to-digital conversion to form UyThe corresponding digital signal is sent to the field programmable gate array unit 120.
Thereafter, the compression subunit 122 compresses the U pairxThe corresponding digital signal is compressed and extracted to form a first point signal uxAnd transmits to the signal processing chip 200. At the same time, the compression subunit 122 is coupled to UyThe corresponding digital signal is compressed and decimated to form a second dot signal uy, which is sent to the signal processing chip 200.
The computing power of a Central Processing Unit (CPU) used by a display device such as an oscilloscope cannot generally achieve the goal of refreshing digital signals acquired and converted by a high-speed ADC. At the moment, an external operation Integrated Circuit (IC) such as a Field Programmable Gate Array (FPGA) is adopted for auxiliary operation, so that the waveform can be effectively drawn.
Of course, when the computing power of the Central Processing Unit (CPU) is sufficient, the FPGA may not be provided.
In one embodiment, signal processing chip 200 includes a Graphics Processor (GPU). The GPU has good graphic processing capacity, so that the corresponding functions of the signal processing chip are conveniently realized.
Of course, the present application is not limited thereto, and the signal processing chip may also include an FPGA or the like.
For specific limitations of the signal processing chip and the signal display device, reference may be made to the above limitations of the signal processing method, which is not described herein again. The modules in the signal display device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
In an embodiment, there is further provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method of any of the above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
In the description herein, references to the description of "one embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of signal processing, the method comprising:
acquiring a plurality of point data signals, wherein the point data signals comprise a first point signal of a first channel and a second point signal of a second channel;
acquiring the position and the arrangement sequence of display points according to the first point signal and the second point signal;
acquiring the distance between adjacent display points according to the positions and the arrangement sequence of the display points;
and acquiring the energy of each sub-waveform between the adjacent display points according to the distance between the adjacent display points, wherein the larger the distance between the adjacent display points is, the smaller the energy of each sub-waveform between the adjacent display points is.
2. The signal processing method of claim 1, wherein the sub-waveform comprises a main wavy line and a wave halo, the wave halo surrounding the main wavy line;
the acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points comprises:
acquiring the energy of a main waveform line of each sub-waveform according to the distance between adjacent display points;
and acquiring corresponding energy of the waveform shadow according to the energy of the main waveform line of each sub-waveform, wherein the energy of the waveform shadow is sequentially reduced from the main waveform line to the outside in the same sub-waveform.
3. The signal processing method according to claim 1, wherein after acquiring the positions and the arrangement order of the display points according to the first point signal and the second point signal, the method further comprises:
and acquiring a first display time sequence of each sub-waveform between adjacent display points according to the arrangement sequence of the display points.
4. The signal processing method according to claim 3, wherein after acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points, the method further comprises:
and according to the first display time sequence of each sub-waveform, the energy of each sub-waveform is attenuated one by one.
5. The signal processing method of claim 1, wherein said obtaining a plurality of point data signals comprises:
obtaining at least two groups of point data signals, wherein one group of point data signals form a frame waveform diagram which comprises a plurality of sub-waveforms;
after the energy of each sub-waveform between adjacent display points is acquired according to the distance between the adjacent display points, the method further comprises the following steps:
acquiring a second display time sequence of at least two frames of oscillograms corresponding to the at least two groups of point data signals;
and according to the second display time sequence, the energy of each sub-waveform of each frame waveform image is attenuated one by one.
6. The signal processing method according to claim 1, wherein after acquiring the energy of each sub-waveform between adjacent display points according to the distance between the adjacent display points, the method further comprises:
when at least two sub-waveforms are intersected, the energy of the intersected at least two sub-waveforms is superposed to obtain the energy at the intersection position.
7. A signal processing chip for implementing the steps of the method of any one of claims 1 to 6.
8. A signal display apparatus, characterized in that the apparatus comprises:
the signal acquisition module is used for acquiring a signal to be detected and converting the signal to be detected into the point data signal;
a signal processing chip connected to the signal acquisition module for implementing the steps of the method of any one of claims 1 to 6;
and the display module is connected with the signal processing chip and is used for displaying the sub-waveform image.
9. Signal display device according to claim 8,
the signal acquisition module includes:
the analog-to-digital conversion unit is used for acquiring a detected signal and converting the detected signal into a digital signal;
the field programmable gate array unit is connected with the analog-to-digital conversion unit and the signal processing chip and is used for compressing and extracting the digital signals to form the point data signals;
and/or the presence of a gas in the gas,
the signal processing chip comprises a graphics processor.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
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