A 0.5 mm2 0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS Solar Cell-Powered Biofuel Cell-Input Biosensing System with PIM/PDM LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens
A 0.5 mm2 0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS Solar Cell-Powered Biofuel Cell-Input Biosensing System with PIM/PDM LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens
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0.5 mm2 0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS 太阳能电池供电的生物燃料电池输入生物传感系统，具有 PIM/PDM LED 驱动，适用于独立无 RF 连续血糖监测隐形眼镜
DOI：
10.1109/esscirc53450.2021.9567771
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
K. Niitsu
中科院分区：
文献类型：
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作者：
Guowei Chen;Xinyang Yu;Yue Wang;Tran Minh Quan;Naofumi Matsuyama;Takuya Tsujimura;Md. Zahidul Islam;K. Niitsu
这项工作提出了第一个太阳能电池（SC）供电的生物燃料电池（BFC）输入生物传感系统，具有混合脉冲间隔调制（PIM）和脉冲密度调制（PDM）LED驱动能力，用于独立的无RF连续葡萄糖监测（CGM）隐形眼镜，允许糖尿病患者在没有任何外部设备的情况下获得CGM水平信息。来自镜头上SC的电力供应可以消除无线电力输送的必要性，并且LED实现可以消除无线通信的必要性。通过采用BFC输入方法而不是使用耗电的恒电位仪，降低了功耗。在PIM/PDM模式下，采用0.31 V/0.39 V电源电压时测得的功率为28 nW/144 nW，可由镜头上SC管理，从而在办公室环境光下实现完全独立运行。
This work presents the first solar cell (SC)-powered biofuel cell (BFC)-input biosensing system with hybrid pulse interval modulation (PIM) and pulse density modulation (PDM) LED driving capability for stand-alone RF-less continuous glucose monitoring (CGM) contact lenses, which allows diabetes patients to obtain CGM level information without any external devices. Power supply from on-lens SCs can eliminate the necessity of wireless power delivery, and LED implementation can eliminate the necessity of wireless communication. By employing the BFC-input approach instead of using a power-hungry potentiostat, power consumption was reduced. The measured power of 28 nW/144 nW at PIM/PDM mode with a 0.31 V/0.39 V supply voltage can be managed by the on-lens SCs, enabling a fully stand-alone operation under office-room ambient light.