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摘要
鉴于睡眠呼吸暂停综合症实时监测的必要性,设计了一种基于聚偏氟乙烯(PVDF)的便携式柔性呼吸传感器。采用环膜结构作为整体结构,以亲肤凝胶为基底,粘贴在人体腹部。利用ANSYS Workbench 18.0的ACT-PiezoAndMEMS-v180.1压电分析模块对PVDF环膜结构进行应力变形分析,找出能够产生最大变形效应的拱高作为最佳设计结构,旨在采集最强呼吸信号。另外通过信号调理电路放大采集信号,输出标准的呼吸电压信号。经过人体佩戴测试,得出正常呼吸波形图和呼吸暂停波形图。测试波形数据结果显示:该传感器测量准确,可实现家庭就地实时监控,为后续该结构在家庭监护方向的推广提供了依据,也为与之配套的监控系统开发奠定了基础。
Abstract
In view of the necessity of real-time monitoring of sleep apnea syndrome,a portable flexible respiratory sensor based on PVDF was designed.The annular membrane structure was used as the whole structure,and the skin gel was used as the substrate,which was pasted on the abdomen of the human body.The act-piezoandmems-v180.1 piezoelectric analysis module of ANSYS workbench 18.0 was used to analyze the deformation of the PVDF ring membrane structure,and the arch height which can produce the largest deformation effect was found as the best design structure.The purpose of this analysis was to collect the strongest respiratory signals.In addition,signal conditioning circuit amplified the acquisition signal and outputed the standard respiratory voltage signal.The normal respiratory waveform and apnea waveform were obtained by human body wear test.The test results shown that the sensor was accurate in measurement,which provided a basis for the further promotion of the structure in the direction of family monitoring,and also layed a foundation for the development of the corresponding monitoring system.
关键词
压电分析
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柔性呼吸传感器
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ANSYS
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环膜结构
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聚偏氟乙烯
Key words
piezoelectric analysis
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flexible respiratory sensor
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ANSYS
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ring membrane structure
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PVDF
基于聚偏氟乙烯的柔性呼吸传感器研制和性能研究[J].
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基金资助
国家自然科学基金青年科学基金(51303062);山西省重点研发计划项目(201703D121002);山西省面上青年基金(201701D221104);山西省软科学研究一般项目(2017041014-2);山西省教育科学规划课题(GH-18141、GH-18142)
