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首页> 外文期刊>IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems >ENZYME: An Energy-Efficient Transient Computing Paradigm for Ultralow Self-Powered IoT Edge Devices
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ENZYME: An Energy-Efficient Transient Computing Paradigm for Ultralow Self-Powered IoT Edge Devices

机译：ENZYME：超低自供电物联网边缘设备的节能瞬态计算范例

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摘要

Internet of Things (IoT) edge devices usually work under power-constrained scenarios like outdoor environmental monitoring. Considering the cost and sustainability in a long run, energy harvesting technology is preferable for edge devices. Nevertheless, the harvesting power is generally weak and unstable, making it difficult for edge devices to maintain the normal functionality. Hence, it is crucial to improve the energy efficiency of edge devices. This paper proposes a software paradigm, ENZYME, to improve the energy efficiency of edge devices for transient computing with ultralow energy harvesting power supplies. ENZYME consists of two lightweight yet highly efficient software modules including Routine Handler and frequency modulator (FM). Routine Handler assists power regulator to maximize power extraction from energy harvesters with proper operation routines. Further, FM maximizes the utility of the extracted energy for program execution via efficient runtime clock frequency modulation. The lightweight and highly efficient natures enable ENZYME to be integrated into low-power IoT edge devices easily and efficiently. Experimental results demonstrate that ENZYME achieves more than 8.8% energy efficiency over state-of-the-art techniques with Routine Handler, and 35.71% extra energy utility with FM upon applying Routine Handler.
机译：物联网（IoT）边缘设备通常在功耗受限的情况下工作，例如室外环境监控。从长远来看，考虑到成本和可持续性，能量收集技术更适合边缘设备。然而，收割能力通常很弱且不稳定，这使得边缘设备难以维持正常功能。因此，提高边缘设备的能源效率至关重要。本文提出了一种软件范例ENZYME，以提高具有超低能量收集电源的瞬态计算的边缘设备的能效。 ENZYME由两个轻巧而高效的软件模块组成，包括例程处理程序和频率调制器（FM）。例程处理程序通过适当的操作例程协助功率调节器最大程度地从能量收集器中提取功率。此外，FM通过有效的运行时时钟频率调制最大程度地提高了提取能量在程序执行中的效用。轻巧和高效的特性使ENZYME可以轻松高效地集成到低功耗IoT边缘设备中。实验结果表明，与常规例程相比，ENZYME的能源效率超过了8.8％，而在常规例程中使用FM时，ENZYME的FM具有35.71％的额外能源利用率。

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