Abstract
A visual touch control direct current (DC) electronic load is designed based on ARM, which carries a real time operating system and a graph software library. The system scheme, hardware design, software design and testing are introduced. In hardware design, STM32F103ZET6 is used as the main controller, IRF540N is used as the power load device, and 3.2-inch TFT touch screen driven by ILI9341 is used as the touch display. In software design, based on μC/OS-III embedded real-time operating system, the STemWin graph software library is used to drive LCD with users adjusting the electronic load. The touch screen data is obtained by Microcontroller through SPI interface, then the processed data is converted to output voltage by the 12-bit DAC of micro-controller. The load characteristics are obtained by adjusting the FET through OPA2330. Meanwhile, the sampling voltage and loop current are tested by 16-bit ADS1118, and the results are displayed on the LCD. The test results shows that the DC electronic load is stable and reliable, and the interactive mode improves the ease of use and practical value.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
