Multifunctional data acquisition system based on STM32 and USB bus
To better meet the diverse needs of industrial production and automation control,and to address the limitations of poor portability and limited functionality in existing general-purpose data acquisition systems,this paper presents the design and implementation of a multifunctional USB data acquisition system based on the STM32F723ZET6 microcontroller.Through the USB interface,the system can be controlled via host computer software to perform 16-channel analog-to-digital conversion data acquisition,dual-channel digital-to-analog conversion output and PWM signal detection and generation.Meanwhile,the acquired or output data is displayed in real-time on the host computer.Practical measurements indicate that the system can achieve a maximum analog input sampling rate and analog output update rate of 1 MS/s.Additionally,the system can detect and generate signal with a frequency up to 1 MHz and a minimum duty cycle of 1%,which ensuring high precision signal sampling and reliable data transmission.This system offers high portability,cost-effectiveness,comprehensive functionality,and meets the requirements of practical applications.