An elastic timer for wide dynamic working range
An elastic timer for wide dynamic working range
复制标题
具有宽动态工作范围的弹性定时器
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
A. Yakovlev
中科院分区：
文献类型：
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作者：
D. Shang;Oyinkuro Benafa;F. Xia;Yuqing Xu;A. Yakovlev
为了计时，许多系统都需要振荡器。它们通常被称为定时器。在低占空比系统中，例如无线传感器，这样的振荡器可能会导致系统功耗的很大一部分。在制造低功耗的片上振荡器方面，已经进行了广泛的研究。然而，计时功能的另一部分，即计算振荡周期的部分，通常不在这类研究中涉及。这篇文章描述了一项研究，其重点是开发具有固有的计算自身振荡周期的能力的振荡器，适合直接用作计时装置。证明了基于异步计数器和匹配时延的解决方案的功能正确性，并从振荡频率和工作范围两个方面对一些设计进行了表征。此外，所提出的定时器对于电压变化是无缝弹性的。
Oscillators are needed in many systems for time keeping purposes. They are often called timers. In low duty cycle systems, such as wireless sensors, such oscillators may incur a significant portion of system power consumption. Extensive research exists in making on-chip oscillators low power. However, the other part of the time keeping function, that of computing the number of oscillation cycles, is normally not treated in such research. This paper describes research that focuses on developing oscillators with an innate capability of counting its own oscillation cycles, suitable for direct use as timekeeping devices. The functional correctness of solutions based on asynchronous counters and matched delays are demonstrated and a number of designs are characterized in terms of oscillation frequency and working ranges. In addition, the proposed timers are seamlessly elastic in relation to voltage variations.