A simple sensing mechanism for wireless, passive pressure sensors.
A simple sensing mechanism for wireless, passive pressure sensors.
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一种用于无线无源压力传感器的简单传感机制。
DOI：
10.1109/embc.2016.7591090
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Ledet,EricH
中科院分区：
文献类型：
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作者：
Drazan,JohnF;Wassick,MichaelT;Dahle,Reena;Beardslee,LukeA;Cady,NathanielC;Ledet,EricH
我们开发了一种简单的无线压力传感器，它只由三个电隔离元件组成。两个导电螺旋被一个闭孔泡沫分开，当暴露在变化的压力下时，泡沫会变形。这种变形改变了电容，从而改变了传感器的谐振频率。将原型传感器浸入水中并在暴露于10至130 mmHg的生理相关压力时进行无线询问。传感器始终表现出4.35 kHz/mmHg的灵敏度，足以解决体内生理相关的压力变化。这些简单的传感器具有体内压力传感的潜力。
We have developed a simple wireless pressure sensor that consists of only three electrically isolated components. Two conductive spirals are separated by a closed cell foam that deforms when exposed to changing pressures. This deformation changes the capacitance and thus the resonant frequency of the sensors. Prototype sensors were submerged and wirelessly interrogated while being exposed to physiologically relevant pressures from 10 to 130 mmHg. Sensors consistently exhibited a sensitivity of 4.35 kHz/mmHg which is sufficient for resolving physiologically relevant pressure changes in vivo. These simple sensors have the potential for in vivo pressure sensing.