基于STM32与异步FIFO的乒乓模式高速数据采集系统设计

Design of High-Speed Data Acquisition System Based on STM32 and Ping Pong Mode of Asynchronous FIFO

针对电力行业光纤光栅传感器数据采集速率不足、功耗高等问题,设计了一种基于STM32与异步FIFO的高速数据采集系统。该系统以STM32为核心,通过采用TIADC结构来实现双通道交替采样,提高了系统采样率;各通道内利用两片异步FIFO实现乒乓缓存技术,完成了信号数据的高速存储与实时处理,并通过WIFI通信将数据传输到上位机。试验证明:该数据采样系统实现了低功耗的高速数据采集,存储深度为16 K,最高采样率可达200 Msample/s,可满足电力行业工程需求。

To slove the problems insufficient data collection rate and high power consumption of fiber grating sensors in power industry, a high speed data acquisition system based on STM32 and ping-pong mode of asynchronous FIFO is designed.The core of the system is STM32 single chip microcomputer, this system uses TIADC structure to realize dual channel alternating sampling, which improves the sampling rate of the system. In each channel, two Asynchronous FIFO are realized ping-pong caching technology,which complete the high-speed storage and real-time processing of signal, and WIFI communication is used to transfer data to the host computer. The test result shows that the data sampling system realizes highspeed data acquisition with low power consumption, the storage depth is 16 K, and the highest sampling rate can reach 200 Msample/s.