针对传统心电仪及心音听诊设备相互独立且不易携带的缺点,设计并实现了一种基于Android平台的便携式心音心电采集系统。该系统由心音和心电采集及信号调理模块,蓝牙数据通信模块和Android系统上位机构成。首先在心音与心电采集与放大电路中将信号进行分别放大和去噪处理,然后通过模数转换将处理后的信号经由蓝牙模块发出;最后使用Android平台设备上位机程序对采集到的心音与心电信号进行接收与实时显示。实际效果表明,所设计的信号调理电路能够有效滤除外界噪声干扰,可以清楚地分辨信号的诊疗特征,极大程度上克服了现有诊断设备的诸多缺点,为个人健康监护以及医务人员外出诊断都提供了一个良好的解决方案。
Since the traditional ECG monitor and cardiophony equipment are mutually independent and uneasy to carry,a portable ECG and PCG acquisition system based on Android platform was designed and realized. The acquisition system is constituted of heart sounds and ECG acquisition and signal conditioning module,Bluetooth data communication module and upper computer of Android system. The signals are amplified and denoised respectively in ECG and PCG acquisition and amplification circuit,and then send out through Bluetooth module after AD conversion. The upper computer procedure of the Android platform is used to receive and display the collected ECG and PCG signals in real-time. The actual results show that the signal conditioning circuit can filter out the outside noise effectively,and distinguish the treatment features of the signals clearly. The system has overcome many shortcomings of the existing diagnostic equipments to the maximum extent,and provides a good solution for the personal health supervision and medical personnel out-call.