Aggressive use of Deep Sleep mode in low power embedded systems

Jun'ichi Segawa, Yusuke Shirota, K. Fujisaki, Tetsuro Kimura, Tatsunori Kanai
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引用次数: 4

Abstract

Since idle-state is the dominant state for embedded systems, disabling unused devices in idle-states can lead to significant power reduction. Among the various sleep modes provided by application processors, Deep Sleep mode offers maximum power savings. Since Deep Sleep mode requires to stop I/O devices and clocks, it is usually used in suspend-state. However, with the emergence of non-volatile or low power compute state retainable devices, we can now explore exploiting Deep Sleep mode in non-suspend states. We propose a new scheme to aggressively use Deep Sleep mode under normal operations. An experimental result of 48-80% power reduction on our prototype board indicates possibilities for near-future mobile platform running solely on photovoltaic-power.
在低功耗嵌入式系统中积极使用深度睡眠模式
由于空闲状态是嵌入式系统的主要状态,因此禁用处于空闲状态的未使用设备可以显著降低功耗。在应用处理器提供的各种睡眠模式中,深度睡眠模式提供了最大的功耗节省。由于深度睡眠模式需要停止I/O设备和时钟,因此通常在挂起状态下使用。然而,随着非易失性或低功耗计算状态可保留设备的出现,我们现在可以探索在非挂起状态下利用深度睡眠模式。我们提出了一种在正常操作下积极使用深度睡眠模式的新方案。在我们的原型板上,功耗降低48-80%的实验结果表明,在不久的将来,完全依靠光伏电力运行的移动平台是有可能的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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