A 0.3V biofuel-cell-powered glucose/lactate biosensing system employing a 180nW 64dB SNR passive δς ADC and a 920MHz wireless transmitter
A 0.3V biofuel-cell-powered glucose/lactate biosensing system employing a 180nW 64dB SNR passive δς ADC and a 920MHz wireless transmitter
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0.3V 生物燃料电池供电的葡萄糖/乳酸生物传感系统，采用 180nW 64dB SNR 无源 δς ADC 和 920MHz 无线发射器
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
P. Mercier
中科院分区：
文献类型：
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作者：
Ali Fazli Yeknami;Xiaoyang Wang;Somayeh Imani;Ali Nikoofard;Itthipon Jeerapan;Joseph Wang;P. Mercier
可穿戴的理化生物传感器提供了一个令人兴奋的机会来监测体液中离子和代谢物的浓度，如汗液、唾液和间质液，用于健康和健身监测的新兴应用[1]。然而，目前的物理化学传感原型依赖电池和DC-DC转换器为仪器提供电力，这可能会导致体积大、外形突出、寿命有限[1]。本文提出了一种无线物理化学传感系统，当通过酶生物燃料电池(BFC)供电时，能够监测葡萄糖或乳酸，该系统基于待传感底层分析物中自然存在的能量。与现有技术的BFC收割机不同，BFC收割机利用笨重的升压转换器将0.3至0.4V的BFC电压提高到更高的水平，适用于传统的cmos电路[2]，这项工作放弃了任何DC-DC转换器，而是整个系统，包括ΔΣ模数转换器和920 MHz射频发射器，被设计为直接从0.3至0.4V的动态BFC输出运行。
Wearable physiochemical biosensors offer an exciting opportunity to monitor the concentration of ions and metabolites in bodily fluids such as sweat, saliva, and interstitial fluids for emerging applications in health and fitness monitoring [1]. However, current physiochemical sensing prototypes rely on batteries and DC-DC converters to provide power for instrumentation, which may result in a large, obtrusive form factor with limited lifetime [1]. This paper presents a wireless physiochemical sensing system capable of monitoring glucose or lactate when powered via an enzymatic biofuel cell (BFC) based on energy naturally present in the underlying analytes to be sensed. Unlike prior-art BFC harvesters, which utilize bulky boost converters to increase the 0.3-to-0.4V BFC voltage to a higher level suitable for conventional CMOS circuits [2], this work forgoes any DC-DC converter, and instead the entire system, including a ΔΣ ADC and 920mHz RF transmitter, is designed to operate directly from the dynamic 0.3-to-0.4V BFC output.