It is composed of labview front panel and back panel controls.
The ultrasonic ranging system based on a single-chip microcomputer measures the output pulse width, that is, the time interval between transmitting and receiving ultrasonic waves. It controls the peripheral circuits in a timely manner through the single-chip microcomputer and provides signals such as frequency oscillation, data processing, and decoding display to the peripheral circuits. The ultrasonic transmitting circuit includes a gate control circuit (RS flip-flop) and a differential/shaping circuit, while the receiving circuit consists of receiving, amplifying, signal filtering, and shaping circuits.
It is mainly composed of the basic functions and structure of the professional electric energy measurement chip ATT7022B and the single-chip computer MSP430F149 system. In terms of hardware circuits, the electromagnetic compatibility of the circuit is fully considered in the circuit design. A more reliable power supply for electric energy meters is designed to improve the ability to withstand lightning strikes. And it is proposed to use EPROM to store data in order to achieve the purpose of simplicity and security. In the particularly critical communication unit of the electronic energy meter, multiple communication methods such as serial communication and wireless communication are designed to connect scattered electricity meters into a network to achieve centralized control and remote meter reading functions. In addition, a GPS module is designed to locate the coordinates of the collection point.
Multifunctional CNC power supply design based on STM32 (schematic diagram, PCB, program source code, etc.).
STM32 digital oscilloscope source code + digital signal processing tutorials and supporting examples.
Esai source code biofuel and gutter oil rapid detector
Ranging through the ultrasonic module, stm32 is transmitted to OLED through IIC protocol
This program can realize the ultrasonic ranging function, and has functions such as LCD display, serial port output, and changing range.
As a simplified version of AT89C51, AT89C2051 removes P0, P2 and other ports, reducing the number of I/O ports. However, it adds a voltage comparator, so its functions are enhanced in some aspects. For example, it can be used to process analog Quantity, simple analog-to-digital conversion, etc. This article uses this function to design a digital capacitance meter, which can measure the capacity of capacitors with a capacity less than 2 microfarads. It uses a 3-and-a-half-digit digital display. The maximum display value is 1999. The reading unit is uniformly nanofarads (nf), and the measuring range is divided into In the fourth gear, the readings are multiplied by the corresponding magnification.
Learning about microcontrollers is a small example of microcontroller design that is very suitable for beginners and should not be missed.
Storage oscilloscope, fully functional and verified, for graduation project
CPLD portable digital storage oscilloscope hardware platform design
The main modules of this system include measurement and display main control single chip GPRS. Metering uses a serial communication module to provide a serial port to send commands to the metering module for measurement, and the metering module sends back parameters such as voltage, current, and electric energy. GD32F350 receives and processes the display, stores it in the buffer, and then sends the stored data to Baidu Cloud through the GPRS module through the TFT LCD display. Then obtain the main parameters through the mobile APP.
The NuMicro® ML56 series has a wealth of peripherals to implement this capacitive touch thermostat. This reference design can provide ambient temperature sensing, touch control and LCD display of temperature and time information.
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