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摘要：随着科技的发展，医疗生产发生了巨大变革，心电图机正朝着多通道，数字智能型，网络共享型等方向发展。本课题主要进行MSP430心率测量仪与PC机的通信设计。选用16位超低功耗单片机MSP430FG439对采集的心电信号进行记录、实时分析及处理，RS232接口电路实现单片机到计算机的电平逻辑转换，将采集的心电信号上传给PC机。硬件设计采用Protel 99 SE软件，完成了核心小系统的硬件设计及MSP430与PC机之间串口通信电路模块的电路原理图及PCB板图的设计。软件设计采用IAR公司研发的单片机软件开发平台EW430V3.10A，实现了串行通信的软件编写与调试。用面向对象的设计方法，在VC环境下实现心电信号在PC机上显示。通过系统软硬件结合调试，完成了心率测量仪与PC机通信的设计。
关键词： MSP430FG439；串口通信；心电图
The Design of Communication between MSP430 Heart Rate Meter and Personal Computer
Abstract: With the development of the science and technology, medical treatment production has greatly changed. The electrocardiogram monitor is developing for the direction of multi-channel, intelligence and shared network. The design of communication between MSP430 heart rate meter and Personal Computer is introduced in the thesis. The meter uses ultra low power 16 bits single chip microcomputer MSP430FG439 to record, analyze, and real time process the ECG signal. The logic voltage switch from single chip microcomputer to PC is realized and the ECG signal is transmitted to Personal Computer by the serial RS232 interface. Protel 99 SE is used in circuit design which completes the schematic and PCB design of the core system and the communication circuit between MSP430 and PC. The program and debug of the serial interface communication are conducted by the software workbench EW430V3.10A which is researched by IAR Company. The ECG signal displayed on PC is completed by Object-Oriented method. The design of communication between MSP430 heart rate meter and Personal Computer is completed by debugging in the corporation of both software and hardware.
Key words: MSP430FG439, serial interface communication, electrocardiography
