A Sub-1 μW multiparameter injectable BioMote for continuous alcohol monitoring
A Sub-1 μW multiparameter injectable BioMote for continuous alcohol monitoring
复制标题
用于连续酒精监测的低于 1 μW 多参数可注射 BioMote
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
D. Hall
中科院分区：
文献类型：
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作者：
Haowei Jiang;Xiahan Zhou;Saurabh Kulkarni;Michael Uranian;R. Seenivasan;D. Hall
本文提出了一种无线的，完全集成的，微型的“BioMote”传感器节点，可以通过一个16号注射器连续，长期的酒精监测。测量酒精，背景和pH值的微电极电化学传感器阵列被实现为差分测量乙醇，同时去除干扰和运动伪影。低功耗多技术恒电位仪支持电流法和电位法技术，分别实现2.5 nA灵敏度和30.1 dB动态范围，以及0.5 mV灵敏度和43 dB动态范围。使用自激振荡电流-频率（I-to-F）转换器通过反向散射将测量值传输到可穿戴设备。该系统通过片上4匝线圈和可穿戴设备之间的耦合以985 MHz无线供电。该芯片采用65 nm CMOS工艺实现，功耗为970 nW，面积为0.85×1.5 mm 2。
This paper presents a wireless, fully-integrated, miniature “BioMote” sensor node that can be injected through a 16-gauge syringe for continuous, long-term alcohol monitoring. A microelectrode electrochemical sensor array that measures alcohol, background, and pH was implemented to differentially measure ethanol while removing interference and motion artifacts. The low-power multi-technique potentiostat supports both amperometric and potentiometric techniques achieving 2.5 nA sensitivity with 30.1 dB dynamic range and 0.5 mV sensitivity with 43 dB dynamic range, respectively. The measurements are transmitted to a wearable device through backscatter using a self-oscillating current-to-frequency (I-to-F) converter. The system is wirelessly powered via the coupling between an on-chip 4-turn coil and a wearable device at 985 MHz. The self-contained 0.85×1.5 mm2 chip is implemented in 65 nm CMOS and consumes 970 nW.