CN212808401U

CN212808401U - Multifunctional portable instrument

Info

Publication number: CN212808401U
Application number: CN202020890542.1U
Authority: CN
Inventors: 石鹏; 陈旭; 张珂源; 李白燕
Original assignee: Huanghuai University
Current assignee: Huanghuai University
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-03-26
Anticipated expiration: 2030-05-25

Abstract

The utility model relates to a multifunctional portable instrument, which can effectively solve the problem that the prior art is inconvenient to observe and measure signals needing to be processed in real time, and adopts the technical proposal that the multifunctional portable instrument comprises a shell and a main control chip, wherein the shell is provided with a liquid crystal touch screen display module, a switch, a function selection button, an analog channel control selection button, an oscilloscope vertical adjusting button and an oscilloscope horizontal adjusting button, the function selection button comprises an oscilloscope function button, a signal source function button, an universal meter function button and a logic analysis function button, the main control chip is arranged in the shell, the liquid crystal touch screen display module is connected with a main control chip pin 3, the analog channel control selection button is connected with a main control chip pin 2 through a lead, and a power supply is connected with a main control chip pin 1, the utility model adopts the four-channel signal acquisition and two-channel signal output modes to work, and can work simultaneously, is an innovation on multifunctional portable instruments and meters.

Description

Multifunctional portable instrument

Technical Field

The utility model relates to the field of electronic technology, especially a multi-functional portable instrument and meter.

Background

With the development of electronic technology, no matter professionals or amateur electronic enthusiasts, the demand of professional electronic instruments and meters is increased, the market is gradually expanded, no multifunctional portable instrument and meter integrating an oscilloscope logic analyzer signal source multimeter into a whole exists in the current market, and entry-level electronic enthusiasts need a portable multifunctional instrument for conveniently observing and measuring signals needing to be processed in real time, so that the multifunctional portable instrument and meter is imperative to be invented.

Disclosure of Invention

To the above situation, for solving prior art's defect, the utility model aims at providing a multi-functional portable instrument and meter can effectively solve the problem of the inconvenient real-time signal that needs the processing of observing and measuring of prior art.

The utility model adopts the technical proposal that the device comprises a shell and a main control chip, a liquid crystal touch screen display module, a switch, a function selection button, an analog channel control selection button, an oscilloscope vertical adjustment button and an oscilloscope horizontal adjustment button are arranged on the shell, the function selection button comprises an oscilloscope function button, a signal source function button, an universal meter function button and a logic analysis function button, the main control chip is arranged in the shell, the liquid crystal touch screen display module is connected with a main control chip pin 3, the analog channel control selection button is connected with a main control chip pin 2 through a wire, a power supply is connected with a main control chip pin 1, the universal meter function button is connected with a main control chip pin 7 through a wire, the oscilloscope function button, the oscilloscope vertical adjustment button and the oscilloscope horizontal adjustment button are connected with a main control chip pin 6 through wires, the signal source function button is connected with a main control chip pin 5 through a wire, the logic analysis function key is connected with a pin 4 of the main control chip through a wire, and the power supply is connected with the switch.

The utility model discloses a four-channel signal acquisition and binary channels signal output's mode carries out work to can be simultaneous carry out work, be the innovation on the multi-functional portable instrument and meter.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural frame diagram of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model comprises a shell and a main control chip, a liquid crystal touch screen display module 1, a switch 2, a function selection button 3, an analog channel control selection button 4, an oscilloscope vertical adjustment button 5 and an oscilloscope horizontal adjustment button 6 are arranged on the shell, the function selection button 3 comprises an oscilloscope function button, a signal source function button, a multimeter function button and a logic analysis function button, the main control chip is arranged in the shell, the liquid crystal touch screen display module 1 is connected with a main control chip pin 3, the analog channel control selection button 4 is connected with the main control chip pin 2 through a wire, a power supply is connected with the main control chip pin 1, the multimeter function button is connected with a main control chip pin 7 through a wire, the oscilloscope function button, the oscilloscope vertical adjustment button 5 and the oscilloscope horizontal adjustment button 6 are connected with the main control chip pin 6 through wires, the signal source function key is connected with a pin 5 of a main control chip through a lead, the logic analysis function key is connected with a pin 4 of the main control chip through a lead, and a power supply is connected with the switch 2.

In order to ensure the use effect, the model of the main control chip is STM32F407ZET 6.

The liquid crystal touch screen display module 1 is an LCD liquid crystal display screen.

The utility model discloses a service conditions is, the oscilloscope function has four passageways, can part work, also can simultaneous working carry out the collection measurement processing of four ways signal, like figure 1, click button 2 and start, select the oscilloscope button that function selection button 3 corresponds after the start, later select simulation channel control to select button 4 to carry out passageway 1 or passageway 2's selection, can carry out the collection measurement processing of signal, a waveform for measuring the display signal, frequency, some parameter information that the amplitude is commonly used.

The logic analysis function has eight channels, and can simultaneously collect and display eight different signals, and after digital processing, analysis and display are performed, as shown in fig. 1, a key 2 is clicked to start up, a logic analyzer key corresponding to a function selection key 3 is selected after the start-up, and then an analog channel control selection key 4 is selected to perform channel selection, so that the collection and measurement processing of the signals can be performed, the logic of the measured signals is observed on a liquid crystal screen, the logic analyzer function 3 is used for measuring and displaying the logic of the digital signals, and the IIC protocol, the USART protocol, the ONEWIRE protocol, and the SPI protocol are analyzed.

The signal source function has two channels, and can work separately or simultaneously to output two-way signals. As shown in fig. 1, a key 2 is clicked to start the device, a signal source key corresponding to a function selection key 3 is selected after the device is started, and then a channel 3 or a channel 4 is selected 4, so that various function waveforms can be generated, function parameters can be adjusted through the key, and a function generator is used for generating sine waves, square waves, sawtooth waves, ramp waves, noise waves and triangles with adjustable frequency and can be used together with the functions of an oscilloscope.

The multimeter function has the processing function of the capacitance value of the capacitor and the inductance value of the inductor, and the measurement of the conventional resistance value, voltage and current. Referring to fig. 1, a key 2 is clicked to start the device, a multimeter key corresponding to a function selection key 3 is selected after the device is started, a meter pen interface is selected to measure parameters of voltage, current, resistance, inductance and capacitance, and the numerical values of various measured physical quantities are checked through a liquid crystal display.

The liquid crystal touch screen module 1 is used for displaying a logic waveform and an analysis result, displaying a measurement result of a multimeter, displaying a set content of a signal source, and performing human-computer interaction touch control.

The channel selection function 4 is used for selecting channels and processing opening and closing of the four analog channels, a power supply is used for supplying power to the whole circuit respectively, the oscilloscope vertical adjusting key 5 is used for a longitudinal adjusting function and performing display processing after information acquisition, the oscilloscope horizontal adjusting key 6 is used for a transverse adjusting function and performing display processing after information acquisition, the oscilloscope and a signal source can simultaneously work under the control of a main control chip, and the liquid crystal touch screen can work in cooperation with a key knob, so that various measurements can be conveniently realized.

The utility model collects signals through the main control chip, processes signals, the display displays parameters, the main control chip selects STM32F407 and FPGA to work together to collect and process signals, the LCD screen displays the information of the detected signals, and adopts 8-bit high-speed ADC of external AD9288 to collect signals, the PFGA processes signals and transmits the signals to the MCU through a high-speed data bus, the function of the oscilloscope is realized through function selection and LCD screen display information, the FPGA is adopted to collect signals, digital signals of proper level are transmitted to the FPGA, the FPGA distinguishes high and low level, after the data is transmitted to the MCU to be decoded, the function of the logic analyzer is realized through function selection and LCD screen display information, the multifunctional portable instrument adopts ADC inside STM32F407 to collect signals, the processed signals of proper voltage are converted into digital signals through 12-bit ADC inside STM32F407, the function of the universal meter is realized by function selection and information display of the liquid crystal screen, a dual-power mode of a switch power supply and a lithium battery energy storage power supply can be adopted, the switch power supply is used under the condition that commercial power is conveniently received, the lithium battery energy storage is realized, the portable lithium battery is used outdoors for supplying power, the four-channel signal acquisition and dual-channel signal output mode is adopted for working, the work can be simultaneously carried out, the universal meter is an innovation on a multifunctional portable instrument, and the universal meter has good economic and social benefits.

Claims

1. A multifunctional portable instrument comprises a shell and a main control chip, and is characterized in that a liquid crystal touch screen display module (1), a switch (2), a function selection key (3), an analog channel control selection key (4), an oscilloscope vertical adjustment key (5) and an oscilloscope horizontal adjustment key (6) are arranged on the shell, the function selection key (3) comprises an oscilloscope function key, a signal source function key, a universal meter function key and a logic analysis function key, the main control chip is arranged in the shell, the liquid crystal touch screen display module (1) is connected with a main control chip pin 3, the analog channel control selection key (4) is connected with the main control chip pin 2 through a wire, a power supply is connected with the main control chip pin 1, the universal meter function key is connected with a main control chip pin 7 through a wire, the oscilloscope function key, the oscilloscope vertical adjustment key (5) and the oscilloscope horizontal adjustment key (6) are connected with the main control chip pin 6 through wires The signal source function key is connected with a pin 5 of a main control chip through a lead, the logic analysis function key is connected with a pin 4 of the main control chip through a lead, and a power supply is connected with the switch (2).

2. A multifunctional portable instrument and meter as claimed in claim 1, wherein said master control chip is model STM32F407ZET 6.

3. Multifunctional portable instrument according to claim 1, characterized in that said liquid crystal touch screen display module (1) is an LCD liquid crystal display.