An autonomous bladder pressure monitoring system
An autonomous bladder pressure monitoring system
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DOI：
10.1016/j.sna.2005.03.040
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发表时间：
2005-09-23
影响因子：
4.6
通讯作者：
Puers, R
中科院分区：
文献类型：
--
作者：
Coosemans, J;Puers, R
本文报道了一种能够连续测量膀胱内压力的自主监测系统的研制。该胶囊具有无线双向通信功能，可以在膀胱内的任何地方感应供电。通过短路谐振LC槽进行数据传输，最大限度地扩大了无源遥测的工作范围。提出了一种基于施密特触发器振荡器锁定外部射频场的时钟提取方法。原型机只用分立的部件建造。该系统在10赫兹的采样率下测量压力，分辨率为0.04kPa.(C)2005 Elsevier B.V.保留所有权利。
This paper reports on the development of an autonomous monitoring system, capable of continuously measuring the pressure inside the bladder. The capsule features wireless bi-directional communication and can be inductively powered anywhere inside the bladder. Short-circuiting the resonant LC tank for the data transmission maximizes the operating range of the passive telemetry. A novel clock extraction method is presented, based on lock-in of a Schmitt-trigger oscillator into the external radio-frequency field. A prototype was built using only discrete components. The system measures the pressure with a resolution of 0.04kPa at a sampling rate of 10 Hz. (C) 2005 Elsevier B.V. All rights reserved.