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A2 3 W Wireless Intraocular PressureTemperature Monitor Yi-Chun Shih Student Me
设计了一种用于连续眼内压监测的超低功耗无线压力/温度传感设备。
2.3 μW @1.5V, 电容和温度标准偏差分别为1.4 fF和0.4°C
无线传感眼内压监测超低功耗温度传感RF反向散射
▸采用时间交错松弛振荡器将电容和温度转换为频率
▸通过RF反向散射调制将信号处理负担转移到外部读取器
▸消除了数字化电路，显著降低了功耗
Abstract
We present the design of an ultra-low power, wire-
less pressure/temperature sensin g device for continuous intraoc-
ular pressure monitoring. The device is wirelessly pow ered and
demonstrates a power consumption of 2.3 Wa t1 . 5Vd u r i n g
continuous monitoring. The chip converts both capacitance and
temperature to frequency using a time-interleaved relaxation oscil-
lator, which modulates RF backscatter to a reader for computation
of measured samples. A signi ficant reduction in power consump