CN214847359U - Arduino-based waveform generator and oscilloscope integrated system and electronic equipment - Google Patents

Abstract

The utility model provides an Arduino-based waveform generator and oscilloscope integrated system and an electronic device, wherein the system comprises an Arduino singlechip, a waveform generating unit, an oscillograph unit, a function switching unit and an LED display unit; the output end of the function switching unit is connected with the Arduino single chip microcomputer; the waveform generating unit comprises a first control module, a first waveform generating module and a DAC functional module; the output end of the first control module is connected with the Arduino single chip microcomputer; the output end of the Arduino single chip microcomputer is connected with a first waveform generation module, and the output end of the first waveform generation module is respectively connected with the LED display unit and the DAC functional module; the oscillography unit comprises a signal input module, a second control module and a waveform generation module; the output ends of the signal input module and the second control module are connected with the Arduino single chip microcomputer; and the output end of the Arduino single chip microcomputer is connected with the second waveform generation module. The system utilizes arduino to realize the switching and control of two states of the oscilloscope and the waveform generator, and has low cost and strong practicability.

Description

Arduino-based waveform generator and oscilloscope integrated system and electronic equipment

Technical Field

The utility model relates to a waveform demonstration teaching aid field that physics experiments were used, in particular to waveform generator and oscilloscope integration system and electronic equipment based on Arduino.

Background

The waveform generator is a data signal generator, and when debugging hardware, signals are often added to observe whether the circuit works normally. The common signal generator is not only heavy, but also only sends a few simple waveforms, which can not meet the requirements. Therefore, the arbitrary waveform generator is gradually brought into the field of vision of people as an optimal instrument for simulation experiments. The oscilloscope is an electronic measuring instrument with wide application. It can convert the invisible electric signal into visible image, and is convenient for people to research the change process of various electric phenomena. Therefore, it is also widely used in physical experiments.

At present, an oscilloscope and a waveform generator in the market are two kinds of separated equipment, the size is large, the application is inconvenient, the oscilloscope and the waveform generator are often applied in a laboratory, the problem that the oscilloscope and the waveform generator can be simultaneously brought into a classroom teaching demonstration experiment for use is solved, and a relatively accurate oscilloscope is designed; meanwhile, the small oscilloscope used for course teaching needs to be designed to be convenient to wire, control and observe the graph change on the liquid crystal display screen on the oscilloscope and timely capture the electric quantity change situation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waveform generator and oscilloscope integration system based on Arduino, this system realize functions such as switching of wave form, the switching of square wave duty cycle through button micro-gap switch under the waveform generator state, realize analog voltage's read-in control wave frequency through first control module, realize the production of wave form and the demonstration in the LED module through the control of DAC functional module and Arduino procedure at last. The system realizes the switching of sampling frequency of the oscilloscope through the second control module in the state of the oscilloscope, reads analog signals through the ground wire by the signal input module, and then realizes the display of waveforms in the LED module through the control of an arduino program.

In order to achieve the above object, the utility model provides a waveform generator and oscilloscope integration system based on Arduino in a first aspect, which comprises an Arduino single chip microcomputer, a waveform generating unit, an oscillography unit, a function switching unit and a LED display unit; the function switching unit is provided with a function switching key, and the output end of the function switching key is connected with the Arduino single chip microcomputer; wherein the content of the first and second substances,

the waveform generating unit comprises a first control module, a first waveform generating module and a DAC functional module; the first control module is used for editing waveform data, and the output end of the first control module is connected with the Arduino single chip microcomputer; the output end of the Arduino single chip microcomputer is connected with the first waveform generation module, and the output end of the first waveform generation module is respectively connected with the LED display unit and the DAC functional module; the LED display unit is used for displaying the waveform data;

the oscillometric unit comprises a signal input module, a second control module and a second waveform generation module; the output ends of the signal input module and the second control module are connected with the Arduino single chip microcomputer, and the signal input module is provided with a serial port for accessing a signal to be detected; the output end of the Arduino single chip microcomputer is connected with the second waveform generation module; and the output end of the second waveform generation module is connected with the LED display unit and used for displaying the waveform of the signal to be detected.

Furthermore, the waveform generation unit further comprises a waveform output module, wherein the input end of the waveform output module is connected with the DAC functional module, and the waveform output module is provided with a serial port.

Furthermore, a frequency control key, a proportion adjusting key and a waveform adjusting key are arranged on the first control module.

Further, the frequency control key comprises a frequency control switch key and a frequency output adjusting knob.

Furthermore, a frequency increasing key and a frequency decreasing key are arranged on the second control module.

Further, the LED display unit is a 128 × 64OLED display screen.

Further, the signal input module further comprises a ground connection port.

Further, the waveform adjusting key edits the waveform data including: sine waves, triangular waves, sawtooth waves, square waves.

Further, the waveform information displayed by the LED display unit includes: the waveform, the voltage peak-to-peak value, the voltage intermediate value, the frequency value and the duty ratio in the square wave mode of the signal to be detected.

The utility model discloses the second aspect provides an electronic equipment, include as above waveform generator and oscilloscope integration system based on Arduino.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

(one) the utility model provides a waveform generator and oscilloscope integration system based on Arduino, this system be based on the Arduino singlechip preparation simple, practical, can realize that the sampling period is the oscilloscope of ten fender positions of 2-1000 microseconds and can generate the waveform generator that the frequency is 37-1000Hz sine wave, triangular wave, sawtooth wave, the adjustable square wave of duty cycle. The system can realize the switching and control of two states of the oscilloscope and the waveform generator, and the system can adjust the input of digital signals through the corresponding control module to switch the oscilloscope/the waveform generator.

(two) the utility model provides a waveform generator and oscilloscope integration system based on Arduino, this system realize functions such as switching of wave form, the switching of square wave duty cycle through button micro-gap switch under the waveform generator state, realize analog voltage's read-in control wave frequency through first control module, realize the production of wave form and the demonstration in 128 x 64OLED screen through the control of DAC functional module and Arduino procedure at last. According to the system, switching of sampling frequency of the oscilloscope is achieved through the second control module in the state of the oscilloscope, analog signals are read through the ground wire and the signal input module, and then waveforms are displayed in a 128 x 64OLED screen through control of an arduino program.

(III) the utility model provides a waveform generator and oscilloscope integration system based on Arduino, this system utilize Arduino unite two into one oscilloscope and waveform generator, and the use of all enough ordinary waveform display and emergence experiment, the practicality is extremely strong. The system has the advantage of low cost, develops the singlechip of the arduino UNO to a high degree, and saves the cost. In addition, the sampling of the oscillography mode of the system adopts an ADCH register mode, and the maximum sampling is improved by about 50 times compared with the common analog read (pin) sampling.

Drawings

Fig. 1 is a schematic structural diagram of an Arduino-based waveform generator and oscilloscope integrated system according to the present invention;

the same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: the device comprises an Arduino single-chip microcomputer-1, a waveform generating unit-2, a first control module-21, a frequency control key-211, a proportion adjusting key-212, a waveform adjusting key-213, a first waveform generating module-22, a DAC functional module-23, a waveform output module-24, an oscillography unit-3, a signal input module-31, a second control module-32, a second waveform generating module-33, a frequency increasing key-321, a frequency reducing key-322, a function switching unit-4, a function switching key-41 and an LED display unit-5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in 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 invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

It should be noted that, in the function equation of the present invention, the symbol "+" represents multiplication of the front and rear constants or vectors for the operation symbol, and "/" represents division of the front and rear constants or vectors for the operation symbol, and all the function equations of the present invention follow the mathematical operation rule of addition, subtraction, multiplication and division.

It should be noted that the term "first/second" in the present invention is used only for distinguishing similar objects, and does not represent a specific ordering for the objects, and it should be understood that "first/second" may be interchanged with a specific order or sequence if allowed. It should be understood that "first \ second" distinct objects may be interchanged under appropriate circumstances such that embodiments of the invention described herein may be practiced in sequences other than those described or illustrated herein.

As shown in fig. 1, the utility model provides a waveform generator and oscilloscope integrated system based on Arduino, including Arduino singlechip 1, waveform generation unit 2, oscillography unit 3, function switching unit 4 and LED display element 5; the function switching unit 4 is provided with a function switching key 41, and the output end of the function switching key 41 is connected with the Arduino single chip microcomputer 1; wherein the content of the first and second substances,

the waveform generating unit 2 comprises a first control module 21, a first waveform generating module 22, a DAC functional module 23 and a waveform output module 24; the output end of the first control module 21 is connected with the Arduino single-chip microcomputer 1, and the first control module 21 is provided with a frequency control key 211, a proportion adjusting key 212 and a waveform adjusting key 213 for editing waveform data; the output end of the Arduino single chip microcomputer 1 is connected with the first waveform generation module 22, and the output end of the first waveform generation module 22 is respectively connected with the LED display unit 5 and the DAC functional module 23; the LED display unit 5 is used for displaying waveform data; the output end of the DAC functional module 23 is connected with the waveform output module 24; the waveform output module 24 is provided with a serial port for outputting the waveform data;

the oscillography unit 3 comprises a signal input module 31, a second control module 32 and a second waveform generation module 33; the output ends of the signal input module 31 and the second control module 32 are both connected with the Arduino single-chip microcomputer 1, and the signal input module 31 is provided with a serial port for accessing a signal to be detected; the second control module 32 is provided with a frequency increasing button 321 and a frequency decreasing button 322 for adjusting the waveform frequency of the signal to be measured; the input end of the signal input module 31 is connected with the Arduino single chip microcomputer 1, and the output end of the Arduino single chip microcomputer 1 is connected with the second waveform generation module 33; the output end of the second waveform generation module 33 is connected with the LED display unit 5, and is configured to display the waveform of the signal to be detected.

Specifically, the function switching button 41 is used for switching between a waveform generator mode and an oscilloscope mode, when the function switching button 41 is switched off to the oscilloscope mode, the waveform generator mode is obtained after the function switching button 41 is pressed, and the system needs to be reset for use after the mode is switched. Be provided with function switching button 41 on the function switching unit 4, function switching button 41's output with Arduino singlechip 1 connects.

Specifically, the first control module 21 in the waveform generating unit 2 is provided with a frequency control key 211, a proportional adjustment key 212 and a waveform adjustment key 213, wherein the frequency control key 211 comprises a frequency control switch key and a frequency output adjustment knob. More specifically, the frequency control switch button is a frequency control switch in a waveform generator mode, used together with a frequency output adjustment knob. When the frequency control switch is closed, the frequency in the mode of the waveform generator is adjustable, and the output waveform frequency is adjusted through the potential output of the frequency output adjusting knob; the frequency in the waveform generator mode is not adjustable when the control switch button is off.

Specifically, the proportional adjustment button 212 is used for waveform adjustment, and the waveform can be adjusted after being pressed, wherein the adjustment sequence is sine wave, triangular wave, sawtooth wave and square wave in sequence. The waveform adjustment button 213 is used for duty ratio adjustment, and can adjust the duty ratio of the output square wave after being pressed, and the duty ratio is increased by 10% every time the square wave is pressed. In particular, the DAC function 22 is an R2R eight-bit digital-to-analog converter by which an analog signal output with an accuracy of 0.0195V can be produced. More specifically, a digital waveform can be functionally modeled by dividing the waveform for one cycle into 256 portions and storing them in the array wavedigital [255], whose size is represented by 0-255, one for each voltage value of 0-5V. Sine function digital waveform we can call the sine function directly; the digital waveform of the trigonometric function may be represented by y-2 x (0< x <128), y-512-2 x (128< x < 255); the digital waveform of the sawtooth function we can represent by y ═ x (0< x < 255); the digital waveform of the duty-cycle tunable square wave function can be represented by y-255 (0< x < a), and y-0 (a < x < 255). Finally, the data is stored in the array wavedigital [255 ].

Specifically, a waveform data signal is formed by the first waveform generation module 22, and the signal can be displayed by the LED display unit 5; or the waveform data signal is transmitted to the DAC functional module 23, the DAC functional module 23 converts the waveform data signal into a waveform analog signal, and finally transmits the waveform analog signal to the waveform output module 24, and the waveform output module 24 outputs corresponding waveform data; more specifically, the LED display unit 5 displays the waveform generated in the waveform generator mode, and the waveform of the generation signal, the voltage peak-to-peak value Vpp, the voltage intermediate value Vmid, the signal frequency F, and the duty ratio in the square wave mode.

The utility model discloses the operating principle of well waveform generator mode includes: the function switching button 41 on the function switching unit 4 is used for switching to a waveform generator mode, and then the waveform data is regulated through the first control module 21, wherein the frequency control button 211 on the first control module 21 comprises a frequency control switch button and a frequency output regulating knob, when the frequency control switch is closed, the frequency of the waveform data in the waveform generator mode is adjustable, and the frequency of the waveform data output is regulated through the potential output of the frequency output regulating knob; when the control switch key is turned off, the frequency of the waveform data in the waveform generator mode is not adjustable; the proportional adjustment key 212 on the first control module 21 is used for waveform adjustment, and the waveform can be adjusted after being pressed down, and the adjustment sequence is sine wave, triangular wave, sawtooth wave and square wave in sequence; the waveform adjusting button 213 of the first control module 21 is used for duty ratio adjustment, and the duty ratio of the output square wave can be adjusted after the first control module is pressed down, and the duty ratio is increased by 10% every time the first control module is pressed down. The corresponding waveform data parameter signals are adjusted by the first control module 21 and sent to the Arduino single chip microcomputer 1, and the Arduino single chip microcomputer 1 sends the waveform data signals to the first waveform generation module 22 to form waveform digital signals which are sent to the LED display unit 5 to be displayed; or the waveform data is sent to the DAC functional module 23 to form a waveform analog signal, and then the waveform output module 24 outputs corresponding waveform data; the LED display unit 5 displays the waveform generated in the waveform generator mode, and the waveform of the generation signal, the voltage peak-to-peak value Vpp, the voltage intermediate value Vmid, the signal frequency F, and the duty ratio in the square wave mode.

Specifically, a serial port is arranged on the signal input module 31 in the oscillograph unit 3 and is used for accessing a signal to be detected; the second control module 32 is provided with a frequency increasing button 321 and a frequency decreasing button 322 for adjusting the waveform frequency of the signal to be measured; the frequency increase button 321 can increase the sampling frequency, and the frequency decrease button 322 can decrease the sampling frequency; the two keys are used in linkage. More specifically, the second control module 32 adjusts corresponding parameters of the signal to be detected to the Arduino single chip microcomputer 1, and the Arduino single chip microcomputer 1 gives corresponding instructions to send the instructions to the second waveform generation module 33 and then transmits the instructions to the LED display unit 5.

Specifically, the formed waveform of the signal to be detected can be displayed through the LED display unit 5; more specifically, the LED display unit 5 displays the waveform of the signal to be measured in the waveform generator mode, thereby being able to display the waveform of the input signal to be measured, the voltage peak-to-peak value Vpp, the voltage intermediate value Vmid, and the signal frequency F in the oscilloscope mode.

The utility model discloses the operating principle of well waveform generator mode includes: the function switching key 41 on the function switching unit 4 is used for switching to an oscilloscope mode; the signal input module 31 is provided with a serial port, and a signal to be detected is input through the serial port of the signal input module 31; then, the second control module 32 adjusts the waveform of the signal to be measured, and the second control module 32 is provided with a frequency increasing button 321 and a frequency decreasing button 322 for adjusting the waveform frequency of the signal to be measured; the frequency increase button 321 can increase the sampling frequency, and the frequency decrease button 322 can decrease the sampling frequency; second control module 32 adjusts out corresponding signal parameter instruction that awaits measuring to Arduino singlechip 1, and Arduino singlechip 1 forms the waveform data of the signal that awaits measuring, transmits to LED display element 5 at last, and LED display element 5 carries out the demonstration of the waveform of the signal that awaits measuring.

Specifically, the LED display unit 5 is a 128 × 64OLED display screen.

Specifically, the signal input module 31 further includes a ground connection port. More specifically, in the design of the present system, the signal input port in the signal input module 31, the ground connection port, and the waveform output module 23 of the waveform generating unit 2 are all provided in one block, and are all four bump interfaces and two jacks.

Specifically, the system further comprises a communication module for electrically connecting the Arduino single chip microcomputer 1, the waveform generating unit 2, the oscillograph unit 3, the function switching unit 4 and the LED display unit 5. More specifically, the communication module is a plurality of jack wires.

Specifically, the Arduino single chip microcomputer 1 is provided with a function module for storing an ADC and an array. More specifically, the ADC in the system uses an ADCH register. There are two types of AD conversion commonly used in arduino, one is analog read (pin) form, and the other is ADCH register. More specifically, the ADCH register used by the present system may read the upper 8 bits of the ADC conversion result directly from the ADC register. The read period of the analog input is 2 microseconds (0.000002 seconds), so the maximum read speed is 500,000 times per second.

The utility model also provides an electronic equipment, include as above waveform generator and oscilloscope integration system based on Arduino.

The utility model provides a waveform generator and oscilloscope integration system based on Arduino, this system be based on the Arduino singlechip preparation a section simple, practical, can realize that the sampling period is 2-1000 microseconds ten oscilloscopes that keep off the position and can generate the waveform generator that the frequency is 37-1000Hz sine wave, triangular wave, sawtooth wave, the adjustable square wave of duty cycle. The system can realize the switching and control of two states of the oscilloscope and the waveform generator, and the system can adjust the input of digital signals through the corresponding control module to switch the oscilloscope/the waveform generator.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The integrated system of the waveform generator and the oscilloscope based on the Arduino is characterized by comprising an Arduino single chip microcomputer (1), a waveform generating unit (2), an oscillograph unit (3), a function switching unit (4) and an LED display unit (5); a function switching key (41) is arranged on the function switching unit (4), and the output end of the function switching key (41) is connected with the Arduino single chip microcomputer (1); wherein the content of the first and second substances,

the waveform generation unit (2) comprises a first control module (21), a first waveform generation module (22) and a DAC functional module (23); the first control module (21) is used for editing waveform data, and the output end of the first control module is connected with the Arduino single chip microcomputer (1); the output end of the Arduino single chip microcomputer (1) is connected with the first waveform generation module (22), and the output end of the first waveform generation module (22) is respectively connected with the LED display unit (5) and the DAC functional module (23); the LED display unit (5) is used for displaying the waveform data;

the oscillography unit (3) comprises a signal input module (31), a second control module (32) and a second waveform generation module (33); the output ends of the signal input module (31) and the second control module (32) are connected with the Arduino single chip microcomputer (1), and the signal input module (31) is provided with a serial port for accessing a signal to be detected; the output end of the Arduino single chip microcomputer (1) is connected with the second waveform generation module (33); the output end of the second waveform generation module (33) is connected with the LED display unit (5) and used for displaying the waveform of the signal to be detected.

2. The Arduino-based waveform generator and oscilloscope integrated system according to claim 1, wherein the waveform generating unit (2) further comprises a waveform output module (24), an input end of the waveform output module (24) is connected with the DAC functional module (23), and the waveform output module (24) is provided with a serial port.

3. The Arduino-based waveform generator and oscilloscope integrated system according to claim 1, wherein a frequency control key (211), a proportional adjustment key (212) and a waveform adjustment key (213) are provided on said first control module (21).

4. The Arduino-based waveform generator and oscilloscope integrated system according to claim 3, wherein said frequency control key (211) comprises a frequency control switch key and a frequency output adjustment knob.

5. The Arduino-based waveform generator and oscilloscope integrated system according to claim 1, wherein said second control module (32) is provided with a frequency increase button (321) and a frequency decrease button (322).

6. The Arduino-based waveform generator and oscilloscope integrated system according to claim 1, wherein said LED display unit (5) is a 128 x 64OLED display screen.

7. The Arduino-based waveform generator and oscilloscope integrated system according to claim 1, wherein said signal input module (31) further comprises a ground connection port.

8. The Arduino-based waveform generator and oscilloscope integration system according to claim 3, wherein said waveform adjustment key (213) editing waveform data comprises: sine waves, triangular waves, sawtooth waves, square waves.

9. The Arduino-based waveform generator and oscilloscope integrated system according to claim 1, wherein the waveform information displayed by said LED display unit (5) comprises: the waveform, the voltage peak-to-peak value, the voltage intermediate value, the frequency value and the duty ratio in the square wave mode of the signal to be detected.

10. Electronic device, characterized in that it comprises an Arduino-based waveform generator and oscilloscope integrated system according to any of claims 1 to 9.

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