CN101320054B - Method and device for signal generator outputting signal collected by oscillograph - Google Patents

Abstract

The present invention provides a method and device for a signal generator to output signals collected by an oscilloscope. The method realizes that the signal generator outputs the signals collected by the oscilloscope, including the following steps: command"; the oscilloscope sends waveform data to the signal generator; the signal generator sends "read time base command" and "read amplitude setting command" to the oscilloscope; the oscilloscope sends time base and amplitude setting values to the signal generator; the signal generator Calculate the output frequency and amplitude of the signal according to the time base and amplitude setting values; the signal generator outputs the signal collected by the oscilloscope according to the output frequency, output amplitude and waveform data. Through the above method and device, the signal generator can output the signal collected by the oscilloscope, and then the signal generator can be used in conjunction with the oscilloscope, which greatly expands their application space and field, and can be more widely used in geology, ocean, space, military, etc. field of study.

Description

Method and device for signal generator to output signal collected by oscilloscope

technical field

The invention generally relates to the field of measurement work, in particular to a method and a device for a signal generator to output signals collected by an oscilloscope.

Background technique

Signal generators are widely used in scientific research, teaching, engineering and other fields to generate signals of various waveforms, such as sine wave, square wave, triangle wave, AM wave and FM wave. The user can also edit any waveform through the waveform editing interface. The signal generator stores the arbitrary waveform edited by the user in the storage module of the signal generator. When the waveform needs to be output, it reads the waveform from the storage module. DDS technology output.

Oscilloscopes are also widely used in scientific research, teaching, engineering and other fields to detect various signal waveforms. The oscilloscope introduces the input signal through the analog channel, collects the waveform through the A/D conversion module, stores the waveform, and then displays the stored waveform on the screen.

At present, the signal generator and the oscilloscope are two independent instruments. Their structures are shown in Figure 1 and cannot communicate with each other. The signal generator cannot directly output the signal collected by the oscilloscope, which limits the use of the oscilloscope and signal generator.

Contents of the invention

The object of the present invention is to provide the method for signal generator output oscilloscope collected signal, the method realizes signal generator output described oscilloscope collected signal by oscilloscope and signal generator, as shown in Figure 2, this method comprises the following steps:

The signal generator sends the "read waveform data command" to the oscilloscope;

The oscilloscope sends waveform data to the signal generator;

The signal generator sends a "read time base command" to the oscilloscope;

The oscilloscope sends the time base setting value to the signal generator;

The signal generator calculates the output frequency of the signal according to the time base setting value;

The signal generator sends a "read amplitude setting command" to the oscilloscope;

The oscilloscope sends the amplitude setting value to the signal generator;

The signal generator calculates the output signal output amplitude according to the amplitude setting value;

According to the output frequency, output amplitude, and waveform data, the signal generator can output the waveform stored in the oscilloscope.

The present invention also provides a device for a signal generator to output signals collected by an oscilloscope, including a signal generator and an oscilloscope, and the signal generator includes an input module 1, a control processing module 1, a communication interface module 1, a waveform storage module 1 and a display module 1. The oscilloscope includes a display module 2, a control processing module 2, a waveform input acquisition module, a waveform storage module 2, a communication interface module 2 and an input module 2, wherein the signal generator also includes:

The instruction sending module is used to control the signal generator to send instructions to the oscilloscope, and the instructions include "reading waveform data instruction", "reading time base instruction" and "reading amplitude setting instruction";

The data receiving module is used to control the signal generator to receive data from the oscilloscope, including waveform data, time base setting value and amplitude;

The data processing module is used to calculate the output frequency and output amplitude of the signal;

Waveform output module 1, used for outputting waveforms according to waveform data, output frequency and output amplitude;

The oscilloscope also includes:

The instruction receiving module is used to control the oscilloscope to receive the instruction of the signal generator;

The data sending module is used to control the oscilloscope to output data to the signal generator, and the data includes waveform data, time base setting value and amplitude setting value.

The present invention enables the signal generator to output the signal collected by the oscilloscope through the above method and device. Users can play back and reproduce the signal waveform collected by the oscilloscope instantly through the signal generator; they can also output the signal waveform through the signal generator. After outputting through a certain circuit, the oscilloscope receives the output waveform, and stores and sends the output waveform to the signal generator. The difference between the input waveform and the output waveform of this circuit can be compared. The joint use of signal generators and oscilloscopes has greatly expanded their application space and fields, and can be more widely used in research fields such as geology, ocean, space, and military affairs.

Description of drawings

Fig. 1 is the structural diagram of oscilloscope, signal generator of prior art;

Fig. 2 is the flow chart of the method that signal generator output oscilloscope of the present invention gathers the signal;

The flowchart of Fig. 3 Embodiment 1 of the present invention;

Fig. 4 is the data format of the waveform data packet of embodiment 1 of the present invention;

Fig. 5 is a structural diagram of a device for outputting signals collected by an oscilloscope from a signal generator according to Embodiment 2 of the present invention.

Detailed ways

The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

Example 1

The method for the signal generator to output the signal collected by the oscilloscope is: the oscilloscope collects the input signal and saves it; the signal generator exchanges information with the oscilloscope, the signal generator obtains the waveform of the signal collected by the oscilloscope, and saves and outputs the signal, as shown in Figure 5 As shown, the specific steps are as follows:

The signal generator sends the command "read the waveform data of channel 1" to the oscilloscope: Data: Load: CH1: DAC VOLATILE, instructing the oscilloscope to send the waveform data of channel 1, and the format of the waveform data is the DAC value of 16 bits;

The oscilloscope receives the command "read the waveform data of channel 1" sent by the signal generator;

The oscilloscope reads the waveform data of channel 1 and sends it to the signal generator in the form of a data packet. The format of the data packet is shown in Figure 4. The data packet consists of two parts: data length and waveform data content. The data length consists of four bytes, which are used to inform the signal generator of the amount of waveform data to be received; the format of the waveform data content is a 16bits DAC value;

The signal generator receives the data sent by the oscilloscope;

The signal generator receives the data, parses out the size of the sent data, and saves all the sent data;

The signal generator sends the command "read the time base of channel 1" to the oscilloscope: Timebase: Scale? ;

After the oscilloscope receives the "read the time base of channel 1" command, it sends the time base setting value of CH1 channel to the signal generator;

The signal generator calculates the frequency of the signal according to the time base setting value;

The signal generator sends the command "read the vertical sensitivity of channel 1" to the oscilloscope: CH1: Scale? ;

After the oscilloscope receives the "read the vertical sensitivity of channel 1" command, it sends the amplitude setting value of CH1 channel to the signal generator;

The signal generator calculates the output amplitude of the signal according to the amplitude setting value;

According to the output frequency, output amplitude and waveform data, the signal generator can output the signal collected by the oscilloscope.

Example 2

As shown in Figure 3, the device for the signal generator of this embodiment to output the signal collected by the oscilloscope includes an oscilloscope and a signal generator, wherein the signal generator includes an input module 1, a control processing module 1, a communication interface module 1, and a waveform storage module 1 , waveform output module 1, display module 1; the oscilloscope includes: display module 2, control processing module 2, waveform input acquisition module 2, waveform storage module 2, communication interface module 2, input module 2. The oscilloscope also includes an instruction sending module, a data receiving module, and a data processing module; the signal generator also includes an instruction receiving module and a data sending module.

The data receiving module is respectively connected with the control processing module 1 and the communication interface module 1, and is used to control the signal generator to receive data from the oscilloscope, including waveform data, time base setting value and amplitude;

The data processing module is connected with the control processing module 1, and is used to calculate the output frequency and output amplitude of the signal;

The waveform output module 1 includes a waveform D/A conversion circuit and an amplitude D/A conversion circuit for outputting a waveform according to the waveform data, output frequency and output amplitude;

The instruction receiving module is respectively connected with the control processing module 2 and the communication interface module 2, and is used to control the oscilloscope to receive the instruction of the signal generator;

The data sending module is connected with the control processing module 2 and the communication interface module 2 respectively, and is used to control the oscilloscope to output data to the signal generator, and the data includes waveform data, time base setting value and amplitude setting value.

The communication interface module 1 of the signal generator is connected with the communication interface module 2 of the oscilloscope through a communication cable, and is used for data communication between the signal generator and the oscilloscope. The communication interface can be USB interface, RS232, LAN, GPIB, etc., and the communication cable is a special cable for a specific interface.

The waveform input acquisition module 2 includes an amplification circuit and an analog-to-digital conversion circuit for acquiring analog signals and converting them into digital signals.

The above-mentioned input module 1 and input module 2 can be a keyboard, a mouse, a U disk interface, and an interface connected to a PC, such as: USB interface, RS232, LAN, GPIB, etc.

The above-mentioned waveform storage module 1 and waveform storage module 2 may be memory banks such as RAM and FLASH for storing data.

The display module 1 and the display module 2 may be liquid crystal displays or plasma displays.

The control processing module 1 and the control processing module 2 are CPU and its peripheral circuits.

Below in conjunction with Fig. 5 illustrate adopting the device of the present embodiment to realize the process that the signal generator outputs the signal collected by the oscilloscope:

The command sending module of the signal generator sends the "read the waveform data of channel 1" command to the oscilloscope through the communication interface module 1: Data: Load: CH1: DAC VOLATILE, instructing the oscilloscope to send the waveform data of channel 1. The format of the waveform data is 16bits DAC value;

The communication interface module 2 of the oscilloscope receives the "read the waveform data of channel 1" instruction, and transmits it to the control processing module 2 through the instruction receiving module;

After the control processing module 2 receives the above instruction, it reads the waveform data of channel 1 from the waveform storage module 2, and sends it to the signal generator through the data sending module in the form of a data packet. The format of the data packet is shown in Figure 4 , the data packet consists of two parts: data length and waveform data content. The data length consists of four bytes, which are used to inform the signal generator of the amount of waveform data to be received, and the format of the waveform data content is a 16bits DAC value;

The communication interface module 1 of the signal generator receives the data sent by the oscilloscope, and transmits the data to the control processing module 1 through the data receiving module;

The control processing module 1 receives these data, and parses out the size of the sent data, and stores all the sent data in the waveform storage module 1;

The command sending module of the signal generator sends the command "read the time base of channel 1" to the oscilloscope through the communication interface module 1: Timebase: Scale? ;

After the communication interface module 2 of the oscilloscope receives the instruction, it passes the instruction to the control processing module 2 through the instruction receiving module;

After the control processing module 2 receives the above instruction, the time base setting value of the CH1 channel is sent to the signal generator through the data sending module;

The communication interface module 1 of the signal generator receives the time base setting value, and sends the value to the data processing module through the data receiving module and the control processing module 1;

The data processing module calculates the frequency of the signal according to the set value of the time base;

The command sending module of the signal generator sends the command "read the vertical sensitivity of channel 1" to the oscilloscope through the communication interface module 1: CH1: Scale? ;

After the communication interface module 2 of the oscilloscope receives the instruction, it passes the instruction to the control processing module 2 through the instruction receiving module;

After the control processing module 2 receives the above instruction, it sends the amplitude setting value of the CH1 channel to the signal generator through the data sending module;

The communication interface module 1 of the signal generator receives the amplitude setting value, and sends the value to the data processing module through the data receiving module and the control processing module 1;

The data processing module calculates the amplitude of the signal according to the amplitude setting value;

The waveform output module 1 outputs the waveform stored in the oscilloscope according to the frequency, amplitude and waveform data of the signal.

The above specific embodiments are only used to illustrate the present invention, but not to limit the present invention.

Claims (9)

1. the method for a signal generator outputting signal collected by oscillograph, this method realizes that by oscillograph and signal generator described signal generator exports described signal collected by oscillograph, it is characterized in that may further comprise the steps:

Described signal generator sends " reading the Wave data instruction " to described oscillograph;

Described oscillograph sends Wave data to described signal generator;

Described signal generator sends " base instruction when reading " to described oscillograph;

Base value of setting when described oscillograph sends to described signal generator;

The output frequency of described signal generator signal calculated;

Described signal generator sends " amplitude of reading is provided with instruction " to described oscillograph;

Described oscillograph is to described signal generator transmission amplitude value of setting;

The output amplitude of described signal generator signal calculated;

Described signal generator is according to output frequency, output amplitude and Wave data, outputting signal collected by oscillograph.

2. the device of a signal generator outputting signal collected by oscillograph comprises signal generator and oscillograph, it is characterized in that, described signal generator also comprises:

Instruction sending module is used for control-signals generator and sends instruction to oscillograph, and described instruction comprises " reading the Wave data instruction ", " base instruction when reading " and " amplitude of reading is provided with instruction ";

Data reception module is used for control-signals generator and receives oscillographic data;

Data processing module is used for the output frequency and the output amplitude of signal calculated;

Waveform output module 1 is used for according to Wave data, output frequency and output amplitude, outputting signal collected by oscillograph;

Described oscillograph also comprises:

The command reception module is used to control the instruction of oscillograph received signal generator;

Data transmission blocks is used to control oscillograph to the signal generator output data, described data comprise Wave data, the time base value of setting and the amplitude value of setting.

3. the device of signal generator outputting signal collected by oscillograph according to claim 2, it is characterized in that, described signal generator comprises load module 1, control treatment module 1, communication interface modules 1, waveform memory module 1, waveform output module 1 and display module 1, and described oscillograph comprises display module 2, control treatment module 2, waveform input acquisition module 2, waveform memory module 2, communication interface modules 2 and load module 2.

4. the device of signal generator outputting signal collected by oscillograph according to claim 3 is characterized in that, described display module 1 and described display module 2 are respectively LCD or plasma display.

5. the device of signal generator outputting signal collected by oscillograph according to claim 3 is characterized in that, described load module 1 and described load module 2 are respectively keyboard, touch-screen, mouse or input/output port.

6. the device of signal generator outputting signal collected by oscillograph according to claim 3 is characterized in that, described communication interface modules 1 and described communication interface modules 2 are respectively USB interface, RS232, LAN, GPIB or WLAN (wireless local area network).

7. the device of signal generator outputting signal collected by oscillograph according to claim 3 is characterized in that, described control treatment module 1 and control treatment module 2 are respectively CPU and peripheral circuit thereof.

8. the device of signal generator outputting signal collected by oscillograph according to claim 2, it is characterized in that, described waveform output module 1 comprises waveform D/A change-over circuit and amplitude D/A change-over circuit, is used for according to Wave data, output frequency and output amplitude, output waveform.

9. the device of signal generator outputting signal collected by oscillograph according to claim 3 is characterized in that, described waveform input acquisition module 2 comprises amplifying circuit and analog to digital conversion circuit, is used to gather simulating signal, and converts digital signal to.

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