基于ARM的心音诊断播报仪设计

Design of heart sound diagnosis broadcasting instrument based on ARM

以德州仪器TM4C ARM微处理器为控制核心,运用传感器、A/D转换、滤波放大、ARM信号处理、语音输出等技术手段,设计了一个心音信号综合采集分析诊断系统。首先语音播报模块帮助用户操作,再采用传感器对人体的心音信号进行采集,经过信号预处理模块对信号进行滤波放大等处理,通过ARM将采集到的数据进行A/D转换、心音分离、初步诊断并用扬声器播报输出。结果表明,设计的系统能很好地去除心音噪声,并可分离出第一与第二心音,给出初步诊断结果,并可将测试结果传至社区医疗数据库,为远程医疗提供一个有益的尝试。

A heart sound signal integrated acquisition and analysis system was designed,take TI TM4C ARM microprocessor as the control center,sensors,A/D conversion,filter amplification,ARM signal processing and voice output were used.First of all,the voice broadcast module helps the user to operate,and then uses the sensor to collect the heart sound signals of the human body.After the signal preprocessing module filters and amplifies the signal,the data is collected by the ARM undergoes A/D conversion,heart sound separation and preliminary diagnosis,the speaker broadcast output is used.The results show that the designed system can remove the noise of the heart sound well and separate the first and second heart sounds well to give the preliminary diagnosis results.The test results can be transferred to community health database,it is a useful attempt to telemedicine.