多通道生理参数采集模块的USB接口设计

摘要

采用USB接口芯片和多通道生理参数采集模块设计了一种采集模块与上位机PC通信的USB接口，实现了多通道生理参数的实时数据采集。从通信实现的上位机和下位机两方面讨论了接口的设计和实现过程。阐述了基于PC的上位机驱动程序设计，基于USB接口芯片的下位机硬件设计和固件设计，与PC串口通信对比了数据通信的实时性和准确性。%This paper introduces the design of USB interface used on muItipIe physioIogicaI parameter acquistion moduIe. The hardware is achieved by MCU and USB controI IC.The firmware of USB simuIated doubIe-thread function.The CircuIar data buffer is used in data processing.It gave the core code about the WDM driver and appIiction program.Last,the reaI-time and accuracy is compared.