Self-Powered Piezo-Floating-Gate Smart-Gauges Based on Quasi-Static Mechanical Energy Concentrators and Triggers
Self-Powered Piezo-Floating-Gate Smart-Gauges Based on Quasi-Static Mechanical Energy Concentrators and Triggers
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基于准静态机械能集中器和触发器的自供电压电浮栅智能仪表
DOI：
10.1109/jsen.2014.2351398
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发表时间：
2015
影响因子：
4.3
通讯作者：
S. Chakrabartty
中科院分区：
文献类型：
--
作者：
N. Lajnef;W. Borchani;R. Burgueño;S. Chakrabartty
物理过程的变化，如环境温度或压力的变化，发生在明显低于1赫兹的频率上。这对设计自供电传感器提出了挑战，这种传感器可以监测这些准静态物理过程，同时从被监测的信号中收集用于传感、计算和存储的操作能量。在这篇文章中，我们提出了一种设计自供电传感器/数据记录器的新范例，它利用了负刚度机械能量集中器的物理原理，利用了我们之前报道的基于压电驱动碰撞电离热电子注入(p-IHEI)的传感器的物理原理。其工作原理是基于细长柱弹性后屈曲响应过程中不稳定模式分支切换的突变，这些突变被用来产生高频变形作为基于p-IHEI的传感器的输入。实验结果表明，所提出的基于0.5-μMCOMS工艺集成电路的自供电传感器能够对频率范围小于1 Hz的准静态输入事件进行计数和记录。
Changes in physical processes like ambient temperature or pressure variations occur at frequencies that are significantly lower than 1 Hz. This poses a challenge for designing self-powered sensors that monitor these quasi-static physical processes and at the same time scavenge operational energy for sensing, computation, and storage from the signal being monitored. In this paper, we present a novel paradigm for designing a self-powered sensor/data logger that exploits the physics of negative-stiffness mechanical energy concentrators with the physics of our previously reported piezoelectricity driven impact ionized hot-electron injection (p-IHEI)-based sensors. The operational principle is based on the sudden transitions from unstable mode branch switching during the elastic postbuckling response of slender columns, which are used to generate high-frequency deformations as an input to the p-IHEI-based sensor. The experimental results demonstrate that the proposed self-powered sensor based on an integrated circuit fabricated in a 0.5-μm CMOS technology can count and record the number of quasi-static input events with frequencies spanning less than 1 Hz.