Intelligent Detection And Analysis System For Parameters Of Digital Power Supply Board

With the upgrade of electronic power device and the advancement of control methods,digital power is becoming the most widely used power source.The development of digital power detection and analysis technology has also been promoted by the problems such as load system damage caused by unstable output due to device aging and faults.This topic carries on the detection analysis research of the digital power board,detects the power output voltage,the output current,the input voltage,the input current,when the power output is unstable makes the early warning,carries on the off-line operation maintenance to the power supply;collects the operating parameters of digital power supply,such as power factor,power efficiency,power control signal,etc.When the load and input voltage change,the correlation between the operating parameters is analyzed to provide data for designing a more stable power supply.The digital power supply detection and analysis system has the functions of data acquisition,analysis and storage for the digital power supply.The system is divided into front-end human-computer interaction system and upper computer detection and analysis software.The front-end equipment uses STM32F407ZGT6 as the controller,uses ST-em Win graphics library to design human-computer interaction interface,uses uCOS-Ⅱ for task scheduling,and has functions such as data acquisition,touch control,and waveform display.After receiving the data collected by the front-end device,the upper computer detection and analysis software filters,analyzes,stores the data and realizes real-time detection and operation status judgment of the digital power supply.Through the digital power supply operation detection experiments,the system can accurately judge the operation state of the digital power supply,which can realizes functions such as data acquisition,filtering analysis,waveform display,status judgment,data storage.The output voltage and current of digital power supply have strong background noise.Wavelet analysis is used to denoise the collected output voltage signal.Classical filtering algorithms such as median filtering and moving average filtering are used to denoise the output current signal.Good denoising effect is achieved.This topic provides an economical and effective technical means for the operation and maintenance of digital power boards.