CN104374969A - Digital oscilloscope allowing numeric parameter input - Google Patents

Abstract

The invention provides a digital oscilloscope capable of inputting digital parameters, including an input keyboard, a display screen and a control system. The input keyboard has a knob for inputting digital parameters, and the control system is based on the magnitude of the user's rotation of the knob. , determine the digital parameters and output; when the user presses the knob, the display screen displays a virtual input keyboard, the virtual input keyboard has a plurality of virtual keys, the control system according to the user's virtual keys The input operation determines the numeric parameters and outputs them. The digital oscilloscope of the present invention solves the problem in the prior art that digital parameters cannot be quickly input by setting a virtual input keyboard for inputting digital parameters on the display screen of the oscilloscope.

Description

A digital oscilloscope capable of inputting digital parameters

technical field

The invention relates to the field of digital oscilloscopes, in particular to a digital oscilloscope capable of inputting digital parameters.

Background technique

Digital oscilloscope is a widely used electronic measuring instrument. It can convert electrical signals into visible waveforms, which is convenient for test workers to observe the changes of signals. Generally, a digital oscilloscope includes functions such as waveform measurement, triggering, decoding, and mathematical operations. Users can configure the relevant parameters of each function according to their needs to obtain their desired waveform or processed waveform data.

Since the oscilloscope contains many functions, each function needs to set multiple parameters, but the area of the front panel of the oscilloscope is limited, and it is very difficult to place many function setting buttons, so there is basically no way to provide a keyboard for inputting numerical parameters.

In view of this situation, many manufacturers currently use a knob setting method for digital parameter input, that is, a knob is set on the front panel of the oscilloscope, and the user can set the size of the parameter by rotating the knob. The input digital parameter will be increased or decreased by 1, etc. The advantage of this method is that the system is more convenient to implement, and no special operation is required, just continue to rotate the knob forward or reverse until the desired value is adjusted. .

Although the method in the prior art can realize the input of digital parameters, it is cumbersome for the user to operate. For example, if the current digital parameter is 1 and the step of the knob is 1, then the user wants to adjust the digital parameter to 1000 through the knob. , it is necessary to rotate the knob 999 times to set the parameter to 1000, which is a waste of time, and setting digital parameters is an operation that testers often need to perform. If it takes a long time to set each time, it will inevitably prolong the entire Test time, reducing work efficiency.

To sum up, there is a lack of a digital oscilloscope that can quickly input digital parameters in the prior art.

Contents of the invention

In order to solve the problems in the prior art, the present invention proposes a digital oscilloscope capable of quickly inputting digital parameters.

The present invention proposes a digital oscilloscope capable of inputting digital parameters, including an input keyboard, a display screen and a control system. The input keyboard has a knob for inputting digital parameters, and the control system rotates the knob according to the magnitude of the user's , determine the digital parameters and output;

When the user presses the knob, the display screen displays a virtual input keyboard, the virtual input keyboard has a plurality of virtual keys, and the control system determines the digital parameters according to the user's input operation on the virtual keys and output.

In the oscilloscope of the present invention, the control system may also include, according to the user's input operation on the virtual key, that the control system controls the parameter input on the virtual input keyboard according to the user's input operation of rotating the knob The symbols are switched between different virtual keys, and the control system controls the parameter input symbols to select a virtual key according to the input operation of the user pressing the knob.

In the oscilloscope of the present invention, the virtual input keyboard can also include a numeric keypad, a unit keypad and a delete key, and the numeric keypad has a plurality of numeric keys for inputting the digital part in the numeric parameter , the unit keypad has a plurality of unit keys for inputting the unit part in the numerical parameter, and the delete key is used for deleting the numerical part in the parameter.

In the oscilloscope of the present invention, the virtual keys can also have multiple groups of unit keys corresponding to the functions of the oscilloscope, and the control system makes the unit keypad display corresponding to the function according to the function selected by the user unit key.

In the oscilloscope of the present invention, when the display screen displays the virtual input keyboard, the display screen may also display a virtual input keyboard function identifier.

In the oscilloscope of the present invention, the function identifier can also be an origin or a down arrow.

In the oscilloscope of the present invention, the knob for inputting digital parameters may also include a coarse tuning knob and a fine tuning knob, and the step value of the coarse tuning knob is greater than that of the fine tuning knob. step value.

In the oscilloscope of the present invention, when the user performs an input operation on the number keys, the control system can also make the user exit the virtual input keyboard according to the operation of the user pressing other keys on the input keyboard except the function keys. operate.

In the oscilloscope of the present invention, the numeric keypad may also include numeric keys for inputting 0-9, negative sign and decimal point.

The digital oscilloscope according to the present invention solves the problem of not being able to quickly input digital parameters in the prior art by setting a virtual input keyboard for inputting digital parameters, which not only improves the work efficiency of testers; Different unit keys are also set according to different functions, which is more convenient for testers to input parameter units; at the same time, the oscilloscope of the present invention also has the function of inputting digital parameters with knobs, which provides users with multiple choices, and the user experience is better. good.

Description of drawings

FIG. 1 is a schematic structural diagram of a digital oscilloscope 1 in an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of the front panel 2 of the digital oscilloscope 1 in the embodiment of the present invention.

FIG. 3 is a flow chart of inputting numerical parameters through the virtual input keyboard 202 in an embodiment of the present invention.

Detailed ways

A preferred embodiment of the present invention will be described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a digital oscilloscope 1 in this embodiment, in which only components related to the present invention are shown, and other parts are not shown. Fig. 2 is the structural diagram of the front panel 2 of digital oscilloscope 1, and display screen 103 and input keyboard 101 are arranged on front panel 2, and display screen 103 is used for displaying information such as waveform, parameter and menu, and input keyboard 101 is provided with multiple Keys and knobs are used to receive various input settings of the oscilloscope from the user.

With reference to Fig. 1 and Fig. 2, in the present embodiment, digital oscilloscope 1 comprises input keyboard 101, control module 102 and display screen 103, has the knob 201 that is used to input digital parameter on input keyboard 101, and control system 102 rotates knob according to user The amplitude of 201, determine the digital parameter and output, assuming that the step of the knob 201 is 1, if the user wants to adjust the digital parameter from 1 to 5, then the knob 201 needs to be rotated in one direction, 4 unit scales, and it can be completed Input for parameter 5.

In order to solve the problem of inconvenient input of digital parameters in the prior art, the present invention sets a virtual input keyboard 202 for inputting digital parameters. When the user presses the knob 201, the oscilloscope 1 enters the virtual input keyboard mode, and the virtual The keyboard 202 will appear on the display screen 103. The virtual input keyboard 202 has a plurality of virtual keys, and the control system 102 determines and outputs digital parameters according to the user's input operation on the virtual keys.

In this embodiment, the numeric parameter may be a purely numeric numeric parameter, or a numeric parameter with a unit.

In this embodiment, the control system 102 controls the parameter input symbols on the virtual input keyboard 202 to switch between different virtual keys according to the user's input operation on the virtual key according to the user's input operation of rotating the knob 201, And the control system 102 controls the parameter input symbol to select a virtual key according to the input operation of the user pressing the knob 201 .

In this embodiment, the parameter input symbol refers to the mark on the virtual input keyboard 202 used to indicate the current operating position. appears at this key, indicating that this key is currently being operated.

In this embodiment, completing the input of numerical parameters through the virtual input keyboard 202 includes two steps. One is the selection operation, that is, the user rotates the knob 201, and the control system 102 controls the operation on the virtual input keyboard 202 The parameter input character switches between different virtual keys; the second is the confirmation operation, that is, when the user switches to the virtual key he wants to input through the rotation operation, he needs to press the knob 201 to confirm the input of the parameter corresponding to the key. The time control system 102 controls the parameter input symbol on the virtual input keyboard 202 to select the virtual key according to the user's pressing operation, that is, the input of the numerical parameter corresponding to the virtual key is completed.

In this embodiment, the virtual input keyboard 202 includes a numeric keypad 204, a unit keypad 205 and a delete key 206. The numeric keypad 204 has a plurality of numeric keys for inputting the numeric part in the numerical parameter. The unit keypad 205 There are multiple unit keys on it, which are used to input the unit part in the numerical parameter, and the delete key 206 is used to delete the numerical part in the parameter.

As another example, the virtual input keyboard 202 may also include a parameter input area 203 for displaying numerical parameters that have been input.

In this embodiment, the numeric keypad 204 includes numeric keys for inputting 0-9, negative sign and decimal point.

As another example, the numeric keypad 204 may also include other keys for inputting numbers such as symbols or numbers.

In this embodiment, the virtual keys have multiple groups of unit keys corresponding to the functions of the oscilloscope, and the control system 102 makes the unit key area 205 display the unit keys corresponding to the functions according to the function selected by the user. For example, when it is used to switch to the function that needs to input the frequency, the unit keypad 205 will display a plurality of units corresponding to the frequency at this time, as shown in Figure 2, including MHz, KHz, Hz, mHz and uHz; if the user switches When the function of time needs to be input, the unit keypad 205 will display multiple units corresponding to the time, such as s, ms, us and ps. That is, the keys displayed on the unit key area 205 are related to functions, and the control system 102 will display only the unit keys corresponding to the function in the unit key area 205 according to the function selected by the user. Users no longer need to switch units according to functions, and the input operation of units becomes more convenient.

In this embodiment, when the display screen 103 displays the virtual input keyboard 202, the display screen 103 also displays a virtual input keyboard function identifier. That is, when the user switches to the virtual input keyboard mode, an identifier will be displayed on the menu bar of the display screen 103 to indicate that the system is currently in the virtual input keyboard mode.

In this embodiment, the virtual input keyboard function identifier is a dot, that is, when the system enters the virtual input keyboard mode, a dot will be displayed on the menu bar of the display screen 103 .

As another example, the function identifier of the virtual input keyboard may also be set as a down arrow or an up arrow or other symbol with an identification function.

As another example, the digital oscilloscope 1 can have two digital parameter input modes, one is the above-mentioned virtual input keyboard mode, and the other is the knob mode. In this example, the knob 201 for inputting digital parameters includes A coarse-tuning knob and a fine-tuning knob. When the user switches to the knob mode, the user can input digital parameters by rotating the coarse-tuning knob or the fine-tuning knob. The step value of the coarse-tuning knob is greater than that of the fine-tuning knob. For example, the step of the coarse adjustment knob is 10, and the step of the fine adjustment knob is 1, then when the user needs to input a relatively large number, the coarse adjustment knob can be used; when a relatively small number is input, the fine adjustment knob can be used. It is more convenient for users to operate, but compared with the virtual input keyboard mode, the operation of the knob mode is more complicated and time-consuming. However, it provides two modes of input parameters, so that users have more choices and a better user experience.

In this embodiment, when the user performs an input operation on the numeric keys on the numeric keypad 204, the control system 102 enables the user to exit the virtual input keyboard 202 according to the user's operation of pressing other keys on the input keyboard 101 except the function keys. operation. That is, when the user is using the virtual input keyboard 202 to input the digital part of the numerical parameter, if he wants to exit the virtual input keyboard mode, he can press other keys on the input keyboard 101 except the function keys to exit the virtual input keyboard. model.

As another example, an exit button may also be specially set on the input keyboard 101 to exit the virtual input keyboard mode halfway.

Referring to FIG. 3 , the specific steps for the oscilloscope 1 in this embodiment to complete digital parameter input through the virtual input keyboard 202 will be introduced.

301; Enter the virtual input keyboard mode;

First, the user enters the virtual input keyboard mode through a specified method, for example, through a specified key or menu item. The control system 102 controls the display screen 103 to display the virtual input keyboard 202 according to the user's operation, which means that the virtual input keyboard mode has been entered.

302: Determine the type of the virtual key;

Then, the control system 102 will determine the key type operated by the user, and the key type includes a number key, a unit key and a delete key.

303: number keys;

Usually, when a numeric parameter is input, the numeric part will be input first, so the user will operate the numeric keys first. For example, if the user wants to enter 20Hz, then the user would enter the number 20 first.

304: Input the selected number;

The user realizes the input of the number 20 by operating the knob 201 . That is, the control system 102 switches the parameter input symbol to the number key corresponding to the number 2 according to the user's operation of rotating the knob 201, and according to the user's operation of pressing the knob 201, the parameter input symbol selects the button, that is, the input of the number 2 is completed, and at the same time Then complete the input of the number 0, and finally input the number 20 into the parameter input area 203.

305: unit key;

After completing the input of the number, the user also needs to complete the input of the unit Hz by operating the unit key.

306: Input the selected unit;

By operating the knob 201, the user realizes the input of the unit Hz. That is, the control system 102 switches the parameter input character to the unit key corresponding to the unit Hz according to the user's operation of rotating the knob 201, and according to the user's operation of pressing the knob 201, the parameter input character selects the key, that is, the input of the unit Hz is completed, and finally Enter the unit Hz into the parameter input field 203 .

307: Complete the input of numerical parameters and exit the virtual input keyboard mode;

After the user confirms the input of the unit, the control system 102 will make the instrument exit the virtual input keyboard simulation according to the operation, which means that the input of the digital parameter 20Hz is completed at this time, and the virtual input keyboard 202 on the display screen 103 will disappear at the same time.

308: delete key;

If the user makes an input error when inputting the numeric part of the numeric parameter, he can delete it by pressing the delete key.

309: Delete the last digit of the entered number.

The user realizes the delete operation by operating the knob 201 . That is, the control system 102 switches the parameter input character to the delete key according to the user's operation of rotating the knob 201, and deletes the last digit of the number input into the parameter input area 203 according to the user's operation of pressing the knob 201. Knob 201, delete a digit.

Compared with the prior art, the digital oscilloscope 1 of the present invention is provided with a virtual input keyboard simulation, that is, the user can quickly realize the input of digital parameters through a virtual input keyboard 202 displayed on the display screen 103, It solves the problem that the numerical parameters cannot be quickly input in the prior art, and not only improves the work efficiency of testers; moreover, different unit keys are set on the virtual input keyboard 202 according to different functions, which makes it more convenient for testers to input parameter units operation; at the same time, the oscilloscope of the present invention also has the function of inputting digital parameters with a knob, which provides users with multiple choices and better user experience.

Claims (9)

1. A digital oscilloscope capable of inputting digital parameters, comprising an input keyboard, a display screen and a control system, said input keyboard having a knob for inputting digital parameters, The control system determines and outputs digital parameters according to the magnitude of the knob rotated by the user, It is characterized in that, When the user presses the knob, the display screen displays a virtual input keyboard, the virtual input keyboard has a plurality of virtual keys, and the control system determines the digital parameters according to the user's input operation on the virtual keys and output. 2. The oscilloscope according to claim 1, wherein According to the user's input operation on the virtual keys, the control system includes, according to the user's input operation of rotating the knob, the control system controls the parameter input symbols on the virtual input keyboard to switch between different virtual keys, and The control system controls the parameter input symbol to select a virtual button according to the input operation of the user pressing the knob. 3. The oscilloscope according to claim 1 or 2, characterized in that, The virtual input keyboard includes a numeric keypad, a unit keypad and a delete key, the numeric keypad has a plurality of numeric keys for inputting the number part in the numeric parameter, and the unit keypad has a plurality of units The key is used to input the unit part in the number parameter, and the delete key is used to delete the number part in the parameter. 4. The oscilloscope according to claim 3, wherein, The virtual keys have multiple groups of unit keys corresponding to the functions of the oscilloscope, and the control system makes the unit key area display the unit keys corresponding to the functions according to the function selected by the user. 5. The oscilloscope according to claim 1, wherein when the display screen displays the virtual input keyboard, the display screen also displays a virtual input keyboard function identifier. 6. The oscilloscope according to claim 5, wherein the function identifier is an origin or a down arrow. 7. The oscilloscope according to claim 1, wherein the knobs for inputting digital parameters include a coarse adjustment knob and a fine adjustment knob, and the step value of the coarse adjustment knob is larger than the The step value of the fine adjustment knob. 8. The oscilloscope according to claim 3, characterized in that, when the user performs an input operation on the number keys, the control system causes the user to log out of The operation of the virtual input keyboard. 9. The oscilloscope according to claim 3, wherein the number keypad includes number keys for inputting 0-9, negative sign and decimal point.