用基里加米设计制造可伸缩的压电传感器,用于监测心脏声音
Xudong Zhang1, Xudong Ye1, Xi Lei2
1Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Shanghai 200072, China.
Sensors (Basel, Switzerland)
|December 11, 2025
概括
这项研究引入了一种新的,可拉伸的压电心脏声传感器,使用基里加米设计. 这种可穿戴传感器准确地检测心脏声音,为早期心血管疾病查提供了潜力.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 心脏病学 心脏病学
背景情况:
- 心脏声音对于诊断心血管疾病至关重要.
- 现有的传感器缺乏伸展性,由于胸部变形导致信号扭曲.
- 需要先进的传感器来准确,长期监测心脏声音.
研究的目的:
- 开发一种易于制造,可拉伸的压电心脏声音传感器.
- 为了提高可穿戴应用的传感器性能和稳定性.
- 为了验证传感器在检测关键心脏声音 (S1和S2) 中的有效性.
主要方法:
- 一个五层"三明治"压电传感器的制造,具有基里加米灵感的设计.
- 使用有限元模拟来优化基里加米结构.
- 进行电气测试,以评估对声压和频率的响应.
- 在各种应变和曲条件下评估传感器稳定性.
- 执行为期7天的连续监测并将信号与心电图和商业传感器进行比较.
主要成果:
- 基里加米设计显著提高了传感器的伸展性,同时保持了压电效率.
- 传感器显示对声压的线性响应 (0.11V到0.42V,70-94dB).
- 在0-30%的应变下观察到稳定的性能,曲半径为11毫米,并持续激发.
- 可靠检测S1和S2心脏声音,信号一致性高.
结论:
- 拟议的基里加米式压电传感器为心脏声音监测提供了卓越的伸展性和稳定性.
- 显示了可穿戴,长期心血管健康监测和早期疾病查的潜力.
- 解决了传统的刚性或不可拉伸的心脏声传感器的局限性.
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