A Wearable Contactless Sensor Suitable for Continuous Simultaneous Monitoring of Respiration and Cardiac Activity
A Wearable Contactless Sensor Suitable for Continuous Simultaneous Monitoring of Respiration and Cardiac Activity
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DOI：
10.1155/2015/151859
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发表时间：
2015-01-01
影响因子：
1.9
通讯作者：
Breen, Paul P.
中科院分区：
文献类型：
--
作者：
Gargiulo, Gaetano D.;Gunawardana, Upul;Breen, Paul P.
一个可靠的系统，可以同时和准确地监测呼吸和心输出量将有很大的效用，在医疗保健应用。在本文中，我们提出了一种新的方法来创建这样一个系统。这种无创、低功耗、低成本、非接触式传感器适用于连续监测呼吸（潮气量）和心搏量。此外，它能够以真实容量（即，mL）。当前实施例，特别是为睡眠监测应用设计的，当由4.8V电池组供电时仅需要100 mW，并且基于嵌入在T恤中的单个电阻带的使用。在这里，我们描述了该设备的实现，解释了合理的电子电路和物理服装的设计选择，以及使用一个志愿者进行的初步测试。该设备与市售肺量计的比较表明，潮气量可以在较长的时间内监测，精度为+/-10%。我们进一步证明了该设备的实用性，以测量心输出量和呼吸努力。
A reliable system that can simultaneously and accurately monitor respiration and cardiac output would have great utility in healthcare applications. In this paper we present a novel approach to creating such a system. This noninvasive, low power, low cost, contactless sensor is suitable for continuous monitoring of respiration (tidal volume) and cardiac stroke volume. Furthermore, it is capable of delivering this data in true volume (i.e., mL). The current embodiment, specifically designed for sleep monitoring applications, requires only 100 mW when powered by a 4.8 V battery pack and is based on the use of a single electroresistive band embedded in a T-shirt. Here, we describe the implementation of the device, explaining the rational and design choices for the electronic circuit and the physical garment together with the preliminary tests performed using one volunteer subject. Comparison of the device with a commercially available spirometer demonstrates that tidal volume can be monitored over extended periods with a precision of +/- 10%. We further demonstrate the utility of the device to measure cardiac output and respiration effort.