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首页> 外文期刊>Journal of Microelectromechanical Systems >A Fully Integrated Multisite Pressure Sensor for Wireless Arterial Flow Characterization
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A Fully Integrated Multisite Pressure Sensor for Wireless Arterial Flow Characterization

机译:用于无线动脉血流表征的全集成多站点压力传感器

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This paper presents a fully integrated battery-free sensing system that uses a two-site wireless pressure measurement for the detection of arterial stenosis. The remotely powered system uses a backscatter-modulated passive-telemetry interface and transmits sensor as well as reference information to an external system. The monolithic process used to realize the system integrates a 3 μm BiCMOS circuit with silicon-on-glass absolute pressure sensors and an on-chip antenna. The wireless sensor interface consumes 340 μW and uses capacitance-to-frequency conversion for readout of the vacuum-sealed pressure transducers. The integrated device has a 200 μm profile and a volume of 2 mm{sup}3. The system can sense a reduction in flow of 13%, corresponding to a differential pressure of 3 mmHg.
机译:本文提出了一种完全集成的无电池传感系统,该系统使用两点无线压力测量来检测动脉狭窄。远程供电系统使用反向散射调制的无源遥测接口,并将传感器以及参考信息传输到外部系统。用于实现系统的单片工艺将3μmBiCMOS电路与玻璃硅绝对压力传感器和片上天线集成在一起。无线传感器接口的功耗为340μW,并使用电容到频率的转换来读取真空密封的压力传感器。集成器件的轮廓为200μm,体积为2 mm {sup} 3。该系统可以感觉到流量减少了13%,相当于3 mmHg的压差。

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