CN111766423A - Signal display method of oscilloscope and oscilloscope - Google Patents
Signal display method of oscilloscope and oscilloscope Download PDFInfo
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Abstract
The invention discloses a signal display method of an oscilloscope and the oscilloscope, which judge whether the oscilloscope channel needing to be hidden and displayed exists according to a user input instruction which is input by a user and used for controlling channel hiding, if so, signal data in the oscilloscope channel needing to be hidden and displayed are not overlapped, so that the signal data in the oscilloscope channel needing to be hidden and displayed are not contained in the display data finally displayed on a display screen, and a user can clearly observe the signal data needing to be concerned and can not be interfered by the signal data of other channels.
Description
Technical Field
The invention relates to the technical field of oscilloscopes, in particular to a signal display method of an oscilloscope and the oscilloscope.
Background
When a user uses an oscilloscope to perform testing or measurement, multiple channels are often used to test or measure different signals. At present, when oscilloscopes of all manufacturers at home and abroad work at the same time in multiple channels, waveforms of all channel signals can be displayed on display screens of the oscilloscopes, however, under certain conditions, a user may only pay attention to the waveform of a certain channel signal, and waveforms of other channel signals displayed on the display screens can influence the user to observe the waveform of the channel signal concerned by the user, so that the user is difficult to observe.
Particularly, some oscilloscopes have a mathematical operation function, which can perform mathematical operation on signals of some channels, for example, channel 1 (C1) and channel 2 (C2) of the oscillograph are turned on, at this time, the mathematical operation is set to be C1/C2, if a voltage signal is input by C1 and a current signal is input by C2, the mathematical operation result which needs to be observed by a user is a resistor, and the conventional oscillographs display the mathematical operation result in a manner that the mathematical operation result is superimposed on waveforms of all channel signals of the oscillograph to be displayed, so that the mathematical operation result is superimposed with each other, and it is difficult for the user to clearly observe the mathematical operation result.
In view of the above problems, one existing solution is to move each channel signal to a different area to prevent mutual interference, and such a solution still occupies a certain display area and cannot observe the target waveform maximally. And the user has a need to use the optimal vertical accuracy of the acquisition ADC to broaden the vertical range of the C1 and C2 waveforms to the optimal (full screen display) and then observe the mathematically manipulated waveform, this solution does not solve the above problem because moving the vertical position causes clipping distortion of the acquired waveform.
The other scheme is that a channel corresponding to a waveform which does not need to be displayed is directly closed, so that although the waveform cannot be displayed, data of the channel needs to be read for mathematical operation, after the channel is closed, signal data of the corresponding channel cannot be read during the mathematical operation, so that the waveform corresponding to the result of the mathematical operation cannot be displayed at all, and the situation that the waveform is not triggered can be caused.
Disclosure of Invention
The invention aims to provide a signal display method of an oscilloscope and the oscilloscope, and solves the technical problem that the waveforms of a plurality of channel signals of the oscilloscope are mutually superposed during display to cause difficulty in observation of a user.
According to a first aspect, there is provided in one embodiment a method of displaying a signal of an oscilloscope, comprising:
acquiring signal data of a plurality of channels of an oscilloscope;
mapping the signal data of the plurality of channels to obtain two-dimensional waveform data which corresponds to each channel and is used for displaying; the two-dimensional waveform data which correspond to different channels and are used for displaying have different color information;
acquiring a user input instruction for controlling channel hiding; the user input instruction for controlling channel hiding comprises identification information of a channel needing to be hidden and displayed;
judging whether the oscilloscope has a channel needing to be hidden and displayed or not based on the user input instruction for controlling channel hiding;
when the channel needing to be hidden and displayed exists in the oscilloscope, based on the identification information of the channel needing to be hidden and displayed, superposing the two-dimensional waveform data for display corresponding to other channels of the oscilloscope except the channel needing to be hidden and displayed to obtain display data;
and displaying the display data on a display screen of the oscilloscope.
According to a second aspect, there is provided in an embodiment an oscilloscope, comprising:
the signal acquisition module is used for acquiring signal data of a plurality of channels of the oscilloscope;
the mapping processing module is used for mapping the signal data of the plurality of channels to obtain two-dimensional waveform data which corresponds to each channel and is used for displaying; the two-dimensional waveform data which correspond to different channels and are used for displaying have different color information;
the channel hiding module is used for acquiring a user input instruction for controlling channel hiding; the user input instruction for controlling channel hiding comprises identification information of a channel needing to be hidden and displayed;
the judging module is used for judging whether the oscilloscope has a channel needing to be hidden and displayed or not based on the user input instruction for controlling channel hiding;
the superposition module is used for superposing the two-dimensional waveform data for display corresponding to other channels of the oscilloscope except the channel needing to be hidden and displayed to obtain display data based on the identification information of the channel needing to be hidden and displayed when the channel needing to be hidden and displayed exists in the oscilloscope;
and the display screen is used for displaying the display data.
According to the oscilloscope and the signal display method of the oscilloscope, whether the oscilloscope channel needing to be hidden and displayed exists is judged according to the user input instruction for controlling channel hiding, which is input by a user, if so, signal data in the oscilloscope channel needing to be hidden and displayed are not overlapped, so that the signal data in the oscilloscope channel needing to be hidden and displayed are not included in display data finally displayed on a display screen, and a user can clearly observe the signal data needing to be concerned and cannot be interfered by signal data of other channels.
Drawings
FIG. 1 is a schematic diagram of an oscilloscope according to an embodiment;
FIG. 2 is a block diagram of a CPU of an oscilloscope according to an embodiment;
FIG. 3(a) is a schematic diagram of display data without channel display hiding;
FIG. 3(b) is a schematic diagram of display data after channel display hiding;
FIG. 4 is a flow chart of a signal display method of an oscilloscope according to an embodiment;
fig. 5 is a flowchart illustrating an exemplary embodiment of a signal display method of an oscilloscope.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
In the embodiment of the invention, whether the oscilloscope channel needing to be hidden and displayed exists is judged according to the user input instruction for controlling channel hiding, if so, the oscilloscope channel needing to be hidden and displayed is determined, and when the two-dimensional waveform data corresponding to the channel and used for displaying are overlapped, the two-dimensional waveform data of the oscilloscope channel needing to be hidden and displayed are not overlapped, so that the display data finally observed by a user only comprises the two-dimensional waveform data corresponding to the oscilloscope channel needing to be observed.
The first embodiment is as follows:
referring to fig. 1, fig. 1 is a schematic structural diagram of an oscilloscope according to an embodiment, where the oscilloscope includes a programmable logic controller (FPGA) 10, a Central Processing Unit (CPU) 20, and a display screen 30.
The programmable logic controller 10 is configured to collect multi-channel signal data and store the collected multi-channel signal data in a random access memory (DDR). In this embodiment, after the programmable logic controller 10 collects multi-channel signal data, it needs to process the multi-channel signal data, for example, the collected analog signal data is processed into digital signal data, and the processed collected multi-channel signal data is stored in a random access memory (DDR).
Referring to fig. 2, fig. 2 is a block diagram of a central processing unit of an oscilloscope according to an embodiment, where the central processing unit 20 includes a signal obtaining module 201, a mapping processing module 202, a channel hiding module 203, a determining module 204, and a superimposing module 205.
The signal acquiring module 201 is used for acquiring signal data of each channel of the oscilloscope from the random access memory.
In one embodiment, acquiring signal data for each channel of the oscilloscope comprises:
and acquiring signal data of an acquisition channel of the oscilloscope, and/or acquiring signal data of a channel corresponding to a mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope.
The signal data of the acquisition channel of the oscilloscope is multi-channel signal data acquired by the programmable logic controller 10, that is, the acquisition channel of the oscilloscope for acquiring signals from an external circuit, and the acquisition channel is a channel of the oscilloscope itself, and is commonly a 4-channel oscilloscope, an 8-channel oscilloscope, and the like.
The signal data of the channel is corresponding to the mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope, the signal data of the channel is corresponding to the mathematical operation result obtained by performing the mathematical operation on the signal data acquired by the programmable logic controller 10, the signal data is not directly acquired by the oscilloscope from an external circuit, but is acquired later through some mathematical operations, for example, the oscilloscope comprises an acquisition channel 1 (C1) and an acquisition channel 2 (C2), C1 is the signal data of the acquisition channel 1, C2 is the signal data of the acquisition channel 2, the mathematical operation is set to C1/C2, and the signal data of the channel corresponding to the mathematical operation result is C1/C2.
In one embodiment, acquiring the signal data of the channel corresponding to the mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope comprises:
the central processor 20 obtains a user input command for mathematical operation of the control signal.
Based on the user input instruction for controlling the signal mathematical operation, the central processor 20 determines whether to perform the mathematical operation on the signal data of at least one channel acquired by the oscilloscope.
When it is determined that mathematical operation needs to be performed on the signal data of at least one acquisition channel of the oscilloscope, the central processing unit 20 performs mathematical operation on the signal data of at least one acquisition channel of the oscilloscope according to a preset mathematical operation relationship to obtain the signal data of a channel corresponding to a mathematical operation result.
In this embodiment, the user input instruction for controlling the signal mathematical operation may be a mathematical operation instruction input to the central processing unit 20 by a user through the human-computer interaction device, such as a keyboard, a mouse, etc., or may be an instruction for performing an operation through a common mathematical operation button on the display screen, and the mathematical operation such as addition, subtraction, multiplication, division, etc. may be set as a virtual or physical button on the display screen for the user to operate at any time as the common mathematical operation.
In this embodiment, the channels corresponding to the mathematical operation results may be multiple, and the mathematical operation is performed on the signal data of different acquisition channels through multiple preset mathematical relationships to obtain multiple mathematical operation results, where each mathematical operation result corresponds to one channel, and when the signal data of the channels corresponding to the mathematical operation results are displayed, it is also necessary to determine whether to hide channels corresponding to some mathematical operation results, and if so, hide the channels corresponding to the mathematical operation results, where the determination method and the hiding method are the same as those of the acquisition channels, and are not described herein again.
The mapping processing module 202 is configured to perform mapping processing on the signal data of the multiple channels to obtain two-dimensional waveform data for display corresponding to each channel; the two-dimensional waveform data for display corresponding to different channels have different color information.
In this embodiment, the mapping process for the signal data of the multiple channels may adopt an existing mapping process method for the signal data of the oscilloscope, and in an embodiment, the mapping process method may include the following steps:
converting the signal data of each channel into coordinate data;
converting the coordinate data of each channel into two-dimensional data;
and converting the two-dimensional data of each channel into two-dimensional waveform data for display of each channel by using a color mode (RGB), wherein the two-dimensional waveform data of different channels have different RGB values.
The channel hiding module 203 is used for acquiring a user input instruction for controlling channel hiding; the user input instruction for controlling channel hiding includes identification information of a channel to be hidden and displayed, where the identification information may be a number of the channel, such as acquisition channel 1, acquisition channel 2, and the like.
In one embodiment, obtaining a user input instruction for controlling channel hiding comprises:
and acquiring an operation instruction of a user on a touch button for controlling channel hiding in the display screen. That is, the user can input a user input instruction for controlling the channel hiding by operating a touch button for controlling the channel hiding on the display screen. In addition, the user may input the user input command for controlling the channel hiding in other manners, for example, by directly inputting the command to the central processor 20.
The judging module 204 judges whether the oscilloscope has a channel which needs to be hidden and displayed or not based on a user input instruction for controlling channel hiding. For example, when a user presses a touch button for controlling channel hiding, the oscilloscope has a channel which the user needs to hide and display, otherwise, the oscilloscope does not have a channel which the user needs to hide and display, and at the moment, the oscilloscope can directly superpose and display signal data in each channel according to the existing oscilloscope channel signal display method.
The superimposing module 205 is configured to, when it is determined that the channel that needs to be hidden and displayed exists in the oscilloscope, superimpose, based on the identification information of the channel that needs to be hidden and displayed, the two-dimensional waveform data for display corresponding to the other channels of the oscilloscope excluding the channel that needs to be hidden and displayed, so as to obtain display data.
In this embodiment, according to identification information of a channel that needs to be hidden and displayed and is included in a user input instruction, a channel that needs to be hidden and displayed can be determined, that is, a channel that does not need to be hidden and displayed, in a specific implementation manner, only one channel that can be used for displaying may be provided, and at this time, superposition of two-dimensional waveform data is not required, and two-dimensional waveform data of the only one channel that can be displayed is directly used as display data.
In another specific embodiment, if there are a plurality of channels that can be used for displaying, in this embodiment, two-dimensional waveform data for displaying corresponding to the channels are sequentially superimposed upward from the bottom layer of the display area according to the order from low to high of the priority corresponding to the channels; when a plurality of two-dimensional waveform data for display are superposed on the same pixel point in the display area, only the waveform data for display corresponding to the uppermost layer is displayed. The priority corresponding to the channel is set in advance by a user, the higher the priority is, the higher the display level is, for example, two-dimensional waveform data corresponding to two channels on the same pixel point of the display area are to be displayed, and the two-dimensional waveform data corresponding to the channel with the high priority is displayed.
The display screen 30 includes a display area 301 and a touch button 302, wherein the display area 301 is used for displaying display data, the touch button 302 is used for a user to input instructions, and the user input instructions at least include a user input instruction for controlling channel hiding.
Referring to fig. 3(a) and fig. 3(b), fig. 3(a) is a schematic diagram of display data without channel display hiding, and fig. 3(b) is a schematic diagram of display data after channel display hiding, it can be seen that after channel display hiding, the waveform in the display area is clearer and is convenient for observation.
Example two:
referring to fig. 4, fig. 4 is a flowchart illustrating a signal display method of an oscilloscope according to an embodiment, where the signal display method can be executed in a central processing unit, and includes steps S10 through step 60, which are described in detail below.
And step S10, acquiring signal data of a plurality of channels of the oscilloscope.
Step S20, mapping the signal data of a plurality of channels to obtain two-dimensional waveform data for display corresponding to each channel; the two-dimensional waveform data for display corresponding to different channels have different color information.
Step S30, obtaining a user input instruction for controlling channel hiding; the user input instruction for controlling the hiding of the channel comprises identification information of the channel needing to be hidden and displayed.
And step S40, judging whether the oscilloscope has a channel needing to be hidden and displayed or not based on a user input instruction for controlling channel hiding.
And step S50, when the channel needing to be hidden and displayed exists in the oscilloscope, based on the identification information of the channel needing to be hidden and displayed, superposing the two-dimensional waveform data for display corresponding to other channels of the oscilloscope except the channel needing to be hidden and displayed to obtain display data.
And step S60, displaying the display data on the display screen of the oscilloscope.
In one embodiment, the acquiring signal data of each channel of the oscilloscope in step S10 includes:
and acquiring signal data of an acquisition channel of the oscilloscope, and/or acquiring signal data of a channel corresponding to a mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope.
The signal data of the acquisition channel of the oscilloscope is multi-channel signal data acquired by the programmable logic controller 10, that is, the acquisition channel of the oscilloscope for acquiring signals from an external circuit, and the acquisition channel is a channel of the oscilloscope itself, and is commonly a 4-channel oscilloscope, an 8-channel oscilloscope, and the like.
The signal data of the channel is corresponding to the mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope, the signal data of the channel is corresponding to the mathematical operation result obtained by performing the mathematical operation on the signal data acquired by the programmable logic controller 10, the signal data is not directly acquired by the oscilloscope from an external circuit, but is acquired later through some mathematical operations, for example, the oscilloscope comprises an acquisition channel 1 (C1) and an acquisition channel 2 (C2), C1 is the signal data of the acquisition channel 1, C2 is the signal data of the acquisition channel 2, the mathematical operation is set to C1/C2, and the signal data of the channel corresponding to the mathematical operation result is C1/C2.
In one embodiment, acquiring the signal data of the channel corresponding to the mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope comprises:
the central processor 20 obtains a user input command for mathematical operation of the control signal.
Based on the user input instruction for controlling the signal mathematical operation, the central processor 20 determines whether to perform the mathematical operation on the signal data of at least one channel acquired by the oscilloscope.
When it is determined that mathematical operation needs to be performed on the signal data of at least one acquisition channel of the oscilloscope, the central processing unit 20 performs mathematical operation on the signal data of at least one acquisition channel of the oscilloscope according to a preset mathematical operation relationship to obtain the signal data of a channel corresponding to a mathematical operation result.
In this embodiment, the user input instruction for controlling the signal mathematical operation may be a mathematical operation instruction input to the central processing unit 20 by a user through the human-computer interaction device, such as a keyboard, a mouse, etc., or may be an instruction for performing an operation through a common mathematical operation button on the display screen, and the mathematical operation such as addition, subtraction, multiplication, division, etc. may be set as a virtual or physical button on the display screen for the user to operate at any time as the common mathematical operation.
In this embodiment, the channels corresponding to the mathematical operation results may be multiple, and the mathematical operation is performed on the signal data of different acquisition channels through multiple preset mathematical relationships to obtain multiple mathematical operation results, where each mathematical operation result corresponds to one channel, and when the signal data of the channels corresponding to the mathematical operation results are displayed, it is also necessary to determine whether to hide channels corresponding to some mathematical operation results, and if so, hide the channels corresponding to the mathematical operation results, where the determination method and the hiding method are the same as those of the acquisition channels, and are not described herein again.
In an embodiment, the mapping process performed on the signal data of the multiple channels in step S20 may use an existing oscilloscope signal data mapping process method, and under an embodiment, the mapping process may include the following steps:
converting the signal data of each channel into coordinate data;
converting the coordinate data of each channel into two-dimensional data;
and converting the two-dimensional data of each channel into two-dimensional waveform data for display of each channel by using a color mode (RGB), wherein the two-dimensional waveform data of different channels have different RGB values.
The channel hiding module 203 is used for acquiring a user input instruction for controlling channel hiding; the user input instruction for controlling channel hiding includes identification information of a channel to be hidden and displayed, where the identification information may be a number of the channel, such as acquisition channel 1, acquisition channel 2, and the like.
In one embodiment, obtaining a user input instruction for controlling channel hiding comprises:
and acquiring an operation instruction of a user on a touch button for controlling channel hiding in the display screen. That is, the user can input a user input instruction for controlling the channel hiding by operating a touch button for controlling the channel hiding on the display screen. In addition, the user may input the user input command for controlling the channel hiding in other manners, for example, by directly inputting the command to the central processor 20.
In an embodiment, if there are a plurality of channels that can be used for displaying, in this embodiment, two-dimensional waveform data for displaying corresponding to the channels are sequentially superimposed upward from the bottom layer of the display area according to the order from low to high of the priority corresponding to the channels; when a plurality of two-dimensional waveform data for display are superposed on the same pixel point in the display area, only the waveform data for display corresponding to the uppermost layer is displayed. The priority corresponding to the channel is set in advance by a user, the higher the priority is, the higher the display level is, for example, two-dimensional waveform data corresponding to two channels on the same pixel point of the display area are to be displayed, and the two-dimensional waveform data corresponding to the channel with the high priority is displayed.
Referring to fig. 5, fig. 5 is a flowchart illustrating a signal display method of an oscilloscope according to an embodiment of the present invention, which includes the following steps:
and S101, acquiring signal data to each acquisition channel by the programmable logic controller.
And S102, storing the signal data in each acquisition channel to a random access memory by the programmable logic controller.
Step S103, the central processing unit obtains the signal data of the acquisition channel stored in the random access memory.
Step S104, judging whether to perform mathematical operation.
And step S105, if mathematical operation is carried out, carrying out mathematical operation on the signal data of the related acquisition channel according to a preset mathematical operation relation to obtain signal data corresponding to a mathematical operation result.
And step S106, mapping the signal data of the acquisition channels to obtain two-dimensional waveform data which corresponds to each acquisition channel and is used for displaying.
And step S107, traversing the acquisition channels, and judging whether each acquisition channel needs to be hidden and displayed one by one.
And step S108, superposing the signal data of the acquisition channels which do not need to be hidden and displayed.
Step S109, determines whether or not the signal data is completely superimposed.
And step S110, if the superposition is finished, mapping the signal data of the channel corresponding to the mathematical operation result to obtain two-dimensional waveform data for display corresponding to the mathematical operation result.
Step S111, determining whether the channel corresponding to the mathematical operation result needs to be hidden and displayed.
In step S112, if the channel corresponding to the mathematical operation result does not need to be hidden and displayed, the two-dimensional waveform data for display corresponding to the mathematical operation result is superimposed on the display data.
Step S113, determining whether the two-dimensional waveform data for display corresponding to the mathematical operation result is completely superimposed.
In step S114, when the superimposition is completed, a display histogram is drawn and displayed.
And step S115, if mathematical operation is not performed, mapping the signal data of the acquisition channels to obtain two-dimensional waveform data for display corresponding to each channel.
Step S116, the acquisition channels are traversed, and whether each acquisition channel needs to be hidden and displayed or not is judged one by one.
And step S117, superposing the signal data of the acquisition channels which do not need to be hidden and displayed.
Step S118, determining whether the signal data is completely superimposed.
In step S119, when the superimposition is completed, a display histogram is drawn and displayed.
In the embodiment of the invention, a user inputs a user input instruction for controlling channel hiding according to waveform data to be observed, and a channel corresponding to the waveform data which is not required to be observed by the user is hidden according to the user input instruction for controlling channel hiding, namely, the channel is not superposed into display data, so that the display data finally displayed on a display screen is required to be observed by the user, and the user can observe the waveform data more clearly and straightly; particularly, the user can hide all the acquisition channels and only display the waveform data corresponding to the mathematical operation result aiming at the condition that the user only needs to observe the waveform data corresponding to the mathematical operation result of the acquisition channel signal data.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by computer programs. When all or part of the functions of the above embodiments are implemented by a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a read only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to realize the above functions. For example, the program may be stored in a memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above may be implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and may be downloaded or copied to a memory of a local device, or may be version-updated in a system of the local device, and when the program in the memory is executed by a processor, all or part of the functions in the above embodiments may be implemented.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A method for displaying a signal of an oscilloscope, comprising:
acquiring signal data of a plurality of channels of an oscilloscope;
mapping the signal data of the plurality of channels to obtain two-dimensional waveform data which corresponds to each channel and is used for displaying; the two-dimensional waveform data which correspond to different channels and are used for displaying have different color information;
acquiring a user input instruction for controlling channel hiding; the user input instruction for controlling channel hiding comprises identification information of a channel needing to be hidden and displayed;
judging whether the oscilloscope has a channel needing to be hidden and displayed or not based on the user input instruction for controlling channel hiding;
when the channel needing to be hidden and displayed exists in the oscilloscope, removing the channel needing to be hidden and displayed based on the identification information of the channel needing to be hidden and displayed, and superposing two-dimensional waveform data for display corresponding to other channels of the oscilloscope to obtain display data;
and displaying the display data on a display screen of the oscilloscope.
2. The method for signal display on an oscilloscope of claim 1 wherein said obtaining signal data for a plurality of channels of an oscilloscope comprises:
and acquiring signal data of an acquisition channel of the oscilloscope, and/or acquiring signal data of a channel corresponding to a mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope.
3. The method for displaying an oscilloscope signal according to claim 2, wherein said obtaining the signal data of the channel corresponding to the result of the mathematical operation on the signal data of at least one acquisition channel of the oscilloscope comprises:
acquiring a user input instruction for controlling signal mathematical operation;
judging whether to perform mathematical operation on signal data of at least one acquisition channel of the oscilloscope based on the user input instruction for controlling the mathematical operation of the signal;
and when the signal data of at least one acquisition channel of the oscilloscope is judged to need to be subjected to mathematical operation, performing mathematical operation on the signal data of at least one acquisition channel of the oscilloscope according to a preset mathematical operation relation to obtain the signal data of a channel corresponding to a mathematical operation result.
4. The method for displaying the signal of the oscilloscope according to claim 1, wherein said superimposing the two-dimensional waveform data for display corresponding to the other channels of the oscilloscope excluding the channel that needs to be hidden for display to obtain the display data comprises:
sequentially and upwards superposing the two-dimensional waveform data for display corresponding to the channels from the bottom layer of the display area according to the sequence of the priorities corresponding to the channels from low to high; when a plurality of two-dimensional waveform data for display are superposed on the same pixel point in the display area, only the waveform data for display corresponding to the uppermost layer is displayed.
5. The method for displaying an oscilloscope signal according to claim 1, wherein said obtaining a user input command for controlling channel hiding comprises:
and acquiring an operation instruction of a user on a touch button for controlling channel hiding in the display screen.
6. An oscilloscope, comprising:
the signal acquisition module is used for acquiring signal data of a plurality of channels of the oscilloscope;
the mapping processing module is used for mapping the signal data of the plurality of channels to obtain two-dimensional waveform data which corresponds to each channel and is used for displaying; the two-dimensional waveform data which correspond to different channels and are used for displaying have different color information;
the channel hiding module is used for acquiring a user input instruction for controlling channel hiding; the user input instruction for controlling channel hiding comprises identification information of a channel needing to be hidden and displayed;
the judging module is used for judging whether the oscilloscope has a channel needing to be hidden and displayed or not based on the user input instruction for controlling channel hiding;
the superposition module is used for superposing the two-dimensional waveform data for display corresponding to other channels of the oscilloscope except the channel needing to be hidden and displayed to obtain display data based on the identification information of the channel needing to be hidden and displayed when the channel needing to be hidden and displayed exists in the oscilloscope;
and the display screen is used for displaying the display data.
7. The oscilloscope of claim 6, wherein the signal acquisition module for acquiring signal data for each channel of the oscilloscope comprises:
and acquiring signal data of an acquisition channel of the oscilloscope, and/or acquiring signal data of a channel corresponding to a mathematical operation result of the signal data of at least one acquisition channel of the oscilloscope.
8. The oscilloscope of claim 7, wherein the obtaining of the signal data for the channel corresponding to the result of the mathematical operation on the signal data for at least one acquisition channel of the oscilloscope comprises:
acquiring a user input instruction for controlling signal mathematical operation;
judging whether to perform mathematical operation on signal data of at least one acquisition channel of the oscilloscope based on the user input instruction for controlling the mathematical operation of the signal;
and when the signal data of at least one acquisition channel of the oscilloscope is judged to need to be subjected to mathematical operation, performing mathematical operation on the signal data of at least one acquisition channel of the oscilloscope according to a preset mathematical operation relation to obtain the signal data of a channel corresponding to a mathematical operation result.
9. The oscilloscope of claim 6, wherein the superimposing module is configured to superimpose the two-dimensional waveform data for display corresponding to the other channels of the oscilloscope excluding the channel that needs to be hidden from display to obtain the display data, and the superimposing module comprises:
sequentially and upwards superposing the two-dimensional waveform data for display corresponding to the channels from the bottom layer of the display area according to the sequence of the priorities corresponding to the channels from low to high; when a plurality of two-dimensional waveform data for display are superposed on the same pixel point in the display area, only the waveform data for display corresponding to the uppermost layer is displayed.
10. The oscilloscope of claim 6, wherein the display screen comprises:
a display area for displaying the display data;
and the touch button is used for inputting instructions by a user, and the instructions input by the user at least comprise user input instructions for controlling channel hiding.
Priority Applications (1)
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