发明名称 |
SELF POWERED SENSORS WITH RADIOISOTOPE SOURCE |
摘要 |
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.
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申请公布号 |
WO2008115202(A3) |
申请公布日期 |
2008.12.04 |
申请号 |
WO2007US20158 |
申请日期 |
2007.09.18 |
申请人 |
CORNELL RESEARCH FOUNDATION, INC.;LAL, AMIT;DUGGIRALA, RAJESH;CHANDRASEKHAR, MVS |
发明人 |
LAL, AMIT;DUGGIRALA, RAJESH;CHANDRASEKHAR, MVS |
分类号 |
H01L35/00 |
主分类号 |
H01L35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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