【作者】 李伟博； 吴效明；

【Author】 Li Wei Bo Wu Xiao Ming(South China University of Technology Guang Dong Guang Zhou 510006)

【机构】 华南理工大学生物科学与工程学院；

【摘要】 采用cypress公司推出的EZ-USBFX2芯片作为USB接口芯片,设计了一种医院无线生理信号采集系统。该系统应用EZ-USBFX2芯片构建单片机和主机的数据管道,将采集到的各项无线生理信号实时、准确地传送给主机。该芯片工作在SlaveFIFO方式下,其它的单片机可以像访问外部存储器一样访问FX2的端点。CYPRESS公司为开发者提供了固件程序框架,用户只需在这些框架里加入自己的代码就可以实现特定的功能。主机应用程序通过USB接口向设备发送相应的命令来控制采样过程。这个系统可以同时检测多项生理信号,且实时性好,有一定的优越性。更多还原

【Abstract】 Adopting the chip EZ-USB FX2 introduced by the company of cypress as the USB interface chip,we design a system of physiological signal acquisition for the hospital.The system constructs a data pipeline between the microcontroller and the host with the chip EZ-USB FX2 and transmits the wireless real-time physiological signals collected to the host accurately.The chip operates in Slave FIFO mode.Another MCU can access the endpoint of FX2 as same as accessing the external memory.The CYPRESS company provides a firmware framework for developers.It can perform some specific functions only if users simply add their own codes into the framework.The host application controls the process of sampling by means of sending the appropriate commands to the device through the USB interface.The system can detect a number of physiological signals.Moreover it is real time and has many advantages.更多还原