基于Android移动终端的肺音测量系统设计与实现

Design and Implementation of Lung Sounds Measurement System Based on Android Mobile Terminal

肺音是反映呼吸道疾病的重要参数。为方便呼吸道疾病患者随时随地自我测量与诊断,设计一种基于Android移动终端的肺音测量系统。该系统以嵌入式终端为基础,蓝牙为传输途径,Android平台客户端为核心,实现了数据采集、波形显示、数据存储功能。通过建立数据提取方法,利用希尔伯特变换对音频信号进行分析,得出肺音的频率、强度、持续时长3个参数。实验结果表明,该测量系统能对肺音准确测量,应用灵活,可满足实际需要。

Lung sounds are important parameters reflecting respiratory diseases.A lung sound measurement system based on Android platform is designed and developed to realize the self-measurement and diagnosis of patients with respiratory diseases at any time and anywhere.The system is based on embedded terminal with bluetooth network as the transmission channel and Android platform client as the core of the measurement system. It not only achieves data acquisition,waveform display,data storage,but also establishes a data extraction method. Hilbert transform is used to analyze the audio signal,and three parameters,frequency,intensity and duration are obtained.The experimental results show that the system can accurately measure the lung sounds and can be applied flexibly to meet the actual needs.