Flexible wireless pressure sensor module
Flexible wireless pressure sensor module
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DOI：
10.1016/j.sna.2005.01.008
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发表时间：
2005-09-23
影响因子：
4.6
通讯作者：
Kim, YJ
中科院分区：
文献类型：
--
作者：
Shin, KH;Moon, CR;Kim, YJ
采用芯片嵌入式柔性封装（CEFP）技术，研制了一种用于植入式血压传感的柔性无线压力传感器模块。CEFP可以提供无线通信平台，它由薄化的硅芯片（RFIC）和天线组成。通过弯曲试验和计算机仿真，分析了柔性通信平台用减薄硅芯片的力学特性。实现的传感器是机械柔性的，并且可以容易地附接到血管的外部。该压力传感器由一个柔性电容式传感器系统组成，包括LC谐振器，它被包裹在血管上，可以远程监测血压。随着血压的变化，血管扩张或收缩。传感器系统识别由于改变电极之间的距离从而改变电容而导致的血压变化。当施加的压力从0变化到213.3kPa时，谐振器频率相应地变化。植入式血压计的灵敏度为11.25 kHz/kPa。所提出的灵活的无线传感器模块可以被用作泛在传感器网络系统中的基本平台。(C)2005 Elsevier B. V.保留所有权利。
A flexible wireless pressure sensor module for implantable blood pressure sensing has been developed using chip embedded flexible packaging (CEFP) technology. The CEFP can provide wireless communication platform, which is composed of thinned silicon chips (RFIC) and antenna. The mechanical characteristics of the thinned silicon chips for flexible communication platform are analyzed using a bending test and computer simulation. The realized sensor is mechanically flexible and can be easily attached to the outside of the blood vessel. The pressure sensor consists of a flexible capacitance type sensor system including LC resonator, which is wrapped onto the blood vessel and can remotely monitor the blood pressure. As blood pressure changes, the blood vessel either expands or shrinks. The sensor system recognizes blood pressure variation due to changing the distance between the electrodes and hence, capacitance. While the applied pressure changes from 0 to 213.3 kPa the resonator frequency changes correspondingly. The sensitivity of the implantable blood pressure is 11.25 kHz/kPa. The proposed flexible wireless sensor module can be used as a basic platform in a ubiquitous sensor network system. (C) 2005 Elsevier B.V. All rights reserved.