心电图机幅频特性检定结果的分析

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【摘要】本文以心电图机为检定对象，以检定项目幅频特性为例，分析了测量数据是否存在异常值，并对测量不确定度进行评定，以期为各位同仁的检定工作提供指导和借鉴。

【关键词】心电图机；幅频特性；异常值；测量不确定度评定

【DOI编码】10.3969/j.issn.1674-4977.2023.06.010

Analysis of the Verification Results of Amplitude Frequency Characteristics of Electrocardiograph

LIU Yaxuan

（Gansu Provincial Metrological Testing and Verification Center， Pingliang 744000， China）

Abstract： In this paper， the ECG machine is taken as the verification object， and the amplitude-frequency characteristics of the verification items are taken as an example. It mainly analyzes whether there are abnormal values in the measurement data， and evaluates the measurement uncertainty， so as to provide guidance and reference for the verification work of colleagues.

Key words： electrocardiograph； amplitude-frequency characteristics； abnormal value； evaluation of measurement uncertainty

1幅频特性的检定意义

心电图机接收到的信号频率和输出的信号幅度是一一对应的，其输出波形的振幅随着输入频率的改变而改变。（剩余2499字）