《基于MSP430的便携式心电记录仪》-毕业论文.doc

PAGE 便携式心电信号记录仪 专业： 学生： 指导老师： 摘 要 当今社会心脏病成为人类健康威胁最大的疾病之一，而心电图可以提供患者全日的动态心电活动的信息，结合病人的活动日记，可以有效地反应患者的健康状况。因此，设计一种适合家庭的便携式心电信号记录仪是非常重要的。本文设计了基于MSP430的便携式心电记录仪，该仪器由心电信号采集部分和心电信号处理部分组成。心电信号采集部分属于模拟电路，主要由前置放大电路、右腿驱动电路、低通与高通滤波电路、主放大器电路以及50Hz陷波电路等组成。此部分主要完成的功能是将弱小的心电信号经过放大滤波，得到能被单片机接收处理的心电信号。心电信号处理部分属于数字电路，主要由基于MSP430的单片机进行模数转换得到数字信号，将此心电数字信号进行存储。本设计主要着重于便携式心电记录系统的硬件研究，实现心电信号采集、心电信号处理、心电信号存储功能，达到了预期的目标。 关键词：心电信号 Holter ECG 数据采集 Portable electrocardiosignal data recorder Major: Electronic and Information Engineering(microelectronics) Student: Chen Xueyu Supervisor: Liu Ying Abstract Cardiopathy becomes one of the most prevalent diseases in endangering people’s health, and ECG can provide dynamical electrocardiosignal information all day. Combined with the patient's activities diary, it can effectively reaction patient’s health. So it is important to design a portable ECG recorder suitable for family system. This subject has designed a portable recorder which is based on MSP430 of ECG. This instrument is composed of the acquisition part of ECG signal and the processing part of ECG signal. The acquisition part of ECG signal pertain to Analog Electronic Technology. The analog part of ECG signal is mainly made up of Pre-amplifier circuit, RL drive circuit, Low-pass Filter Circuit and High-pass Filter Circuit, main amplifier circuit, and 50Hz notch filter circuit. The main function of this part is to adjust the lower signal to acquire valuable analog ECG signal which can be used by microcontroller, The processing part of ECG signal pertain to Digital Electronic Technology, The main function of this part is convert analog ECG signal to digital signal by the microcontroller which is based on MSP430, and storage this digital ECG signal or sent it to PC process by serial communication. This project mainly focuses on the hardware of portable ECG recorder. This project has achieved the goals such as ECG signal acquisition, ECG signal processing, and ECG signal storag