呼吸机检测仪校准装置气体流量校准系统的设计  

Design of gas flow calibration system for ventilator tester calibration device

作　　者：陈鑫宇 黄震威 梅杰[2] 王俊贤 邹剑秋 谢代梁 Chen Xinyu;Huang Zhenwei;Mei Jie;Wang Junxian;Zou Jianqiu;Xie Dailiang(School of Metrology and Testing Engineering,China University of Metrology,Hangzhou 310018,China;Zhejiang Academy of Metrology,Hangzhou 310018,China;Kaihua County Institute of Inspection and Testing,Kaihua 324300,China)

机构地区：[1]中国计量大学计量测试工程学院,杭州310018 [2]浙江省计量科学研究院,杭州310018 [3]开化县检验检测研究院,开化324300

出　　处：《电子测量与仪器学报》2024年第4期217-224,共8页Journal of Electronic Measurement and Instrumentation

基　　金：浙江省市场监督局“雏鹰计划”(CY202214)项目资助。

摘　　要：目前,我国尚未公开呼吸机检测仪的国家校准规范,导致呼吸机检测仪各参数的计量溯源难以展开。一些自编的校准方法在气体流量校准上存在流量校准点受柱塞大小影响的问题,进而限制了流量校准范围。为解决这一问题,本文提出了基于标准表法和柱塞法分别对静态流量和潮气量进行校准的方法,并集成了两套管路、设计了校准系统。介绍了呼吸机检测仪流量测量的基本原理,根据该原理提出了校准方法并实际搭建了装置,对装置进行了测试。测试结果表明本系统静态流量测量范围为5~200 SLPM,扩展不确定度Ur(Qv)=0.602%(k=2);潮气量测量范围为0~2000 mL,扩展不确定度Ur(V)=0.174%(k=2),相对误差满足技术指标。本系统可实现对呼吸机检测仪流量参数的校准。该校准系统的设计为呼吸机检测仪校准装置的研发奠定了基础,并为呼吸机检测仪校准规范的建立提供了一定的借鉴意义。At present,China has not yet publicized the national calibration specification of respiratory tester,which makes it difficult to carry out the metrological traceability of various parameters of respiratory tester.Some self-compiled calibration methods for gas flow calibration have the problem that the flow calibration point is affected by the size of the plunger,which in turn limits the flow calibration range.To solve this problem,this paper proposes a calibration method based on the standard meter method and plunger method for static flow and tidal volume,respectively,and integrates two sets of pipelines and designs a calibration system.The basic principle of flow measurement of the ventilator detector is introduced,the calibration method is proposed based on this principle and the device is actually built and tested,and the test results show that the static flow measurement range of this system is 5~200 SLPM,with the extended uncertainty Ur(Qv)=0.602%(k=2);the tidal volume measurement range is 0~2000 mL,with the extended uncertainty Ur(V)=0.174%(k=2),and the relative error meets the technical specifications,and this system can realize the calibration of respiratory tester calibration of flow parameters.The design of this calibration system lays the foundation for the research and development of the calibration device of respiratory tester and provides certain reference significance for the establishment of the calibration specification of respiratory tester.

关 键 词：计量学 呼吸机检测仪 气体流量 标准表法 柱塞法 

分 类 号：TH785[机械工程—仪器科学与技术]