Inhee Lee, Eunseong Moon, Yejoong Kim, J. Phillips, D. Blaauw
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引用次数: 0
Abstract
This paper presents a $10\text{mm}^{3}$ Intemet-of-Tiny-Things $(\text{IoT}^{2})$ system that measures light dose using custom photovoltaic cells and a light-dose-to-digital converter (LDDC). The LDDC nulls diode leakage for temperature stability and creates headroom without power overhead by dual forward-biased photovoltaic cells. It also adaptively updates the current mirror ratio and accumulation weighting factor for a low, near-constant power consumption. The system can operate energy-autonomously at $> 5001\text{x}$ light level. The LDDC achieves a $3\sigma$ inaccuracy of $\pm$ 3.8% and $\sigma/\mu$ of 2.4% across a wide light intensity range from 10lx to $300\text{klx}$ while consuming only $35-339\text{nW}$
本文介绍了一个$10\text{mm}^{3}$微型物联网$(\text{IoT}^{2})$系统，该系统使用定制光伏电池和光剂量-数字转换器(LDDC)测量光剂量。LDDC为温度稳定性消除二极管泄漏，并通过双正向偏置光伏电池创造无功率开销的净空空间。它还可以自适应地更新当前镜像比率和累积权重因子，以实现低且接近恒定的功耗。该系统可以在$> 5001\text{x}$光级下自主运行。LDDC的$3\sigma$误差为$\pm$ 3.8% and $\sigma/\mu$ of 2.4% across a wide light intensity range from 10lx to $300\text{klx}$ while consuming only $35-339\text{nW}$
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