中圖分類號(hào)： TN98 文獻(xiàn)標(biāo)識(shí)碼： A DOI：10.16157/j.issn.0258-7998.191163 中文引用格式： 楊帆，胡光昊. 基于STM32的三相電表校準(zhǔn)裝置的設(shè)計(jì)[J].電子技術(shù)應(yīng)用，2020，46(9)：60-63，68. 英文引用格式： Yang Fan，Hu Guanghao. Design of three-phase meter calibration device based on STM32[J]. Application of Electronic Technique，2020，46(9)：60-63，68.
Design of three-phase meter calibration device based on STM32
Yang Fan1，2，Hu Guanghao1
1.School of Electrical and Information Engineering，Wuhan Institute of Technology，Wuhan 430205，China； 2.Hubei Video Image and HD Projections Engineering Research Center，Wuhan 430205，China
Abstract： Aiming at the problems of low measurement accuracy and high cost of conventional three-phase meter calibration device, this paper studies a three-phase multifunctional meter calibration device based on STM32F429 single-chip microcomputer. The hardware circuit of the device mainly includes voltage and current sampling range switching circuit, relay drive circuit, time clock circuit, RS232 serial communication module and display circuit. The voltage and current sampling range switching circuit converts the voltage and current signals collected by the current and voltage transformer into the measurement range of CS5463 chip. There are 4 UART ports for RS232 communication in STM32F429 chip, convenient to connect with other peripherals. After receiving the signal, the voltage and current data collected are displayed on the TFTLCD capacitive touch screen. Software design is mainly to initialize temporary variables and configure the relevant registers of CS5463, and then collect voltage and current at regular intervals. Through the analysis and comparison of the test results, the measurement accuracy of the device reaches 4 decimal places.
Key words : STM32F429 single chip microcomputer；voltage and current collection；range switching circuit
