一个直接数字40 A 100 kb/s心内通信接收器,具有250秒的启动时间,用于低功率循环无心脏起器同步
IEEE transactions on biomedical circuits and systems
|April 17, 2024
概括
本研究介绍了使用同步工作循环的双室无心脏起器 (LLPMs) 的节能方法. 这种技术显著降低了能源消耗,有可能延长心脏起器的寿命和患者的结果.
科学领域:
- 生物医学工程 生物医学工程
- 可以植入的医疗器械
- 低功率电子产品 低功率电子产品
背景情况:
- 双室无心脏起器 (LLPMs) 提供先进的心脏节律管理.
- 目前的LLPM同步依赖于连续导电心内通信 (CIC),导致高功耗.
- 过度的电力消耗会降低设备预计的寿命,需要频繁更换.
研究的目的:
- 为双室LLPMs开发一个功率优化的同步策略.
- 设计和评估一种新型的低功耗直接数字CIC (DD-CIC) 接收器.
- 为了证明电流消耗的显著降低,以改善设备的寿命.
主要方法:
- 拟议的CIC收发器的同步工作循环.
- 开发了一种使用曼彻斯特编码数据的新型低功耗DD-CIC接收器.
- 用180nmCMOS技术制造了接收器,用于性能分析.
- 在工作周期运行下测试的灵敏度,电流消耗和启动时间.
主要成果:
- 该DD-CIC接收器在100kb/s时达到81.67.4μV的灵敏度.
- 活动电流消耗量为39.10.6μA,启动时间低于250μs.
- 拟议的同步策略将平均电流消耗降低到73nA.
- 随着持续CIC的使用,预计设备寿命减少了25-45%.
结论:
- 同步工作循环是对功率优化的基于CIC的植入物同步的有希望的策略.
- 这种方法可以显著减少双室LLPM的当前消耗.
- 增加设备寿命可能会减少对昂贵和危险的重新干预的需求.
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