公开(公告)号：WO2008115202A2

公开(公告)日：2008-09-25

申请号：PCT/US2007020158

申请日：2007-09-18

Applicant: CORNELL RES FOUNDATION INC

Inventor： LAL AMIT ,  DUGGIRALA RAJESH ,  CHANDRASEKHAR MVS

IPC: H01J47/08

CPC classification number: G21H5/00 ,  G01T1/2018 ,  G01T3/06 ,  G01T7/00

Abstract: A self-powered sensor (e.g., 100, 180, 220, 400) can wake-up systems requiring a trigger signal to wake-up circuits or systems in power-sleep mode, conserving the battery power for emergency computations and communications. In a humidity sensor embodiment 100, radioisotope generated voltage biases are employed to power sensor capacitors to realize self-powered sensors. A first self-powered capacitor biasing architecture 160 is based on changes in the leakage resistance of the polymer capacitor 110, and a second self-powered capacitor biasing architecture 140 uses changes in the capacitance of the polymer capacitor. Another sensor embodiment uses changes in the capacitance or leakage resistance of the sensor capacitor to modulate conductance of a MOSFET 114, realizing an easily readable electronic output signal. A temperature sensor embodiment 180 and a MEMS cantilever structure based fissile material proximity sensor embodiment 400 are also disclosed.

Abstract translation: 自供电传感器（例如，100,180,220,400）可以唤醒需要触发信号的系统以唤醒电源或电源睡眠模式下的系统，从而节省用于紧急计算和通信的电池电力。 在湿度传感器实施例100中，使用放射性同位素产生的电压偏压来为传感器电容器供电以实现自供电传感器。 第一自供电电容器偏置架构160基于聚合物电容器110的耐漏电流的变化，第二自供电电容器偏置架构140使用聚合物电容器的电容的变化。 另一传感器实施例使用传感器电容器的电容或漏电阻的变化来调制MOSFET 114的电导，实现易于读取的电子输出信号。 还公开了温度传感器实施例180和基于MEMS悬臂结构的裂变材料接近传感器实施例400。