本文介绍了一种简便实用的高精度实时数据采集系统。该系统基于USB接口,采用MCU 控制采样,采样精度可达16位。具有成本低、开发特别简便、方便实用、可扩展性强等特点,可广泛应用于信号分析处理系统。本文通过对该系统的说明,还为读者提供了一种实用的开发USB总线设备的可行方案。 关键词:通用串行总线,CH372,数据采集,固件 Abstract: A practical design of real-time data acquisition system of high-accuracy was introduced in this paper. This system is based on USB, and sampling precision can reach 16-bit. It is low cost, easily and conveniently developed, and has high practicality and outstanding expansibility. It can be widely used in many kinds of signal processing systems. By the introducing in the paper, a kind of practical design of developing equipments based on USB to readers as well. Keyword:USB,CH372,Data acquisition,firmware