编号 淮安信息职业技术学院毕业论文题 目基于 USB 接口的脉搏检测仪的设计学生姓名刘巍学 号11012111院 系电子信息工程专 业电子信息技术班 级110121指导老师杨金红 顾问老师 孙云龙二〇一五年六月摘 要本文设计、制作了一种基于 USB 接口的脉搏检测仪，硬件电路包括数据采集电路、放大滤波电路、控制电路及电源电路。其中数据采集部分采纳的是光电脉搏传感器；放大电路采纳了 AD620；滤波电路由二阶有源低通滤波器构成；控制电路选用了带 USB 控制器、ADC 的微控制器 C8051F320；仪器软件设计分 MCU 固件程序设计、USB 设备驱动程序设计、数据采集程序设计及软件滤波程序设计等四部分组成。仪器的硬件、软件各部分配合良好，测试所得脉搏波形能够正确反映人体脉搏的真实特征。该仪器同时具有使用、携带方便等优点，现场测试表明：本系统已达到预期设计要求。关键词：脉搏 光电传感器 低通滤波 基线漂移 C8051F320AbstractIn this paper, design and production of a kind of pulse detector based on USB interface, enlarge hardware circuit including data acquisition circuit and filter circuit, control circuit and power circuit. The data acquisition part adopts photoelectric pulse sensor; Amplifier AD620 is adopted; Filter circuit composed of second-order active low-pass filter; Control circuit selects the microcontroller with USB controller and ADC with C8051F320; Instrument software design of MCU firmware program design, USB device driver design, data acquisition program design and the design of the software filtering programs of four parts. The parts of hardware and software of the instrument with good, testing the pulse waveform can correctly reflect the real characteristics of the pulse of the human body. The instrument also has the advantages of use, easy to carry, field test shows that this system has reached the expected design requirements.Keywords:Pulse Photosensor Low pass filtering C8051F320 USB interface目 录摘 要.............................................
