硬件加速器用于节能单导干电极ECG可穿戴设计的高功率硬件加速器
概括
一个新的低功耗硬件架构提高了可穿戴式心电图 (ECG) 监测的寿命. 该系统可实现高效的实时信号处理,使用干电极可靠地估计心率和心率变化.
科学领域:
- 生物医学工程 生物医学工程
- 可穿戴技术可穿戴技术
- 信号处理 信号处理
背景情况:
- 单导电心电图 (ECG) 的可穿戴设备对远程监测具有前景.
- 由于复杂的预处理,当前可穿戴设备的高功耗限制了电池寿命.
- 干电极集成对长期ECG监测提出了挑战.
研究的目的:
- 提出一种新的硬件 (HW) 架构,用于基于干电极的心电图信号处理.
- 为了提高可穿戴式心电图监测设备的寿命.
- 为了实现远程医疗应用的高效实时信号处理.
主要方法:
- 开发了一个模拟前端 (AFE) 芯片,与一个可编程门阵列 (FPGA) 结合起来.
- 在FPGA上实现了优化的立方赫米特插值算法,用于信号处理.
- 在一个具有单核处理器的FPGA板上部署了该系统,专注于低功耗.
主要成果:
- 拟议的架构实现了低功耗 (0.01W).
- 它使用最小的FPGA资源 (0.67%的LUT,0.44%的FFs) 进行实时处理.
- 通过计算信号质量指数 (SQI) 实现了平均信号噪声比 (SNR) 16.4 dB.
结论:
- 开发的HW架构显著提高可穿戴式心电图监测的寿命.
- 它提供高效的实时信号处理,适合干电极应用.
- 该系统在长期监测中对心率 (HR) 和心率变化 (HRV) 估计有效.
相关概念视频
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Parts of an ECG
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An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
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