节能电源管理接口与适应式HV多模式刺激,用于电源传感器集成补丁型系统
IEEE transactions on biomedical circuits and systems
|July 21, 2023
概括
本研究介绍了用于贴片型医疗保健设备的节能电源管理接口,其中包括自适应式高压刺激和高效电源转换. 该系统优化了电力使用,并提高了可穿戴健康监测设备的性能.
科学领域:
- 集成电路 集成电路
- 生物医学工程 生物医学工程
- 电力电子 电力电子 电力电子
背景情况:
- 贴片型医疗保健设备需要集成的电源管理和传感器读取才能有效运行.
- 现有系统在平衡功率效率与高压刺激需求方面面临挑战.
研究的目的:
- 为贴片型医疗保健设备开发一个节能功率管理接口 (PMI).
- 通过集成的功率管理和传感器读出电路来实现自适应性高压 (HV) 刺激.
- 提高可穿戴健康应用的整体系统效率和性能.
主要方法:
- 提出了一种具有适应模式控制的多模式转换器,以实现高效的电源供应 (峰值效率为95.6%).
- 设计了一种使用充电 (CP) 的自适应式HV刺激系统,并进行自适应式输出调整以节省电力.
- 集成电池接口电路用于充电状态 (SOC) 监控和功率调节方案以实现最佳运行.
主要成果:
- 在广泛的4-440mA输出电流范围内实现了90%以上的效率.
- 通过CP利用和对生物阻抗的自适应调来证明周期性节能.
- 经过验证的基于SOC的功率降低高达28%的高分辨率,低功耗运行.
- 在0.18-μm CMOS中制造出功率传感器集成电路,并通过实验测试和补丁型设备原型进行验证.
结论:
- 开发的PMI有效地整合了电源管理和HV刺激,用于贴片型医疗保健设备.
- 拟议的自适应控制方案显著提高了能源效率和节能.
- 实验验证和原型演示证实了该系统在可穿戴健康应用中的可行性和性能.
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