文章基本信息

标题：Physiologic-range flow and pressure sensor for respiratory systems
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作者：Lui Holder-Pearson ; Lui Holder-Pearson ; J. Geoffrey Chase 等
期刊名称：OpenHardwareX
印刷版ISSN：2468-0672
出版年度：2021
卷号：10
页码：1-10
DOI：10.1016/j.ohx.2021.e00227
语种：English
出版社：Elsevier
摘要：Graphical abstractDisplay OmittedAbstractA low-cost but reliable flow and pressure sensor is an impediment to development of medical equipment, and studies of human respiratory function, which is characterised by relatively low pressures and flows. A Venturi tube (D1=15mm,D2=10mm) connected to a differential pressure sensor (SDP816-125 Pa) allows accurate measurement of flow between5-75L·min-1, with Pearson Correlation over 4 min at50Hz⩾0.97, and distance correlation⩾0.96. The pressure measurement was similarly accurate using a MPVZ4006GW7U. Both sensors provide an analogue output from a5.0Vsupply, aiding compatibility and customisation. Each populated PCB costs approximately $50USD, and each Venturi sensor costs approximately $1USD. Multiple configurations exist, allowing flow rates up to250L·min-1, increased resolution for specific ranges, and different physical characteristics.
关键词：Respiratory analysis;Reusable sensor;Mechanical ventilation;Customisable sensor