基于RPI的便携式低功耗心电图机计量检定仪系统设计及功能测试  

作　　者：张荣毅 

机构地区：[1]天津市河西区计量检定所,天津300000

出　　处：《科技创新与应用》2025年第6期117-120,共4页Technology Innovation and Application

摘　　要：探究基于RPI微处理器的便携式低功耗心电图机计量检定仪系统的设计要点,并对其基本功能和检定性能进行测试。该检定仪的硬件部分以RPI处理器为核心,通过USB口、GPIO口等与D/A转换器、信号调节模块、信号叠加模块等进行通信,将处理后的信号送入被检设备中;软件部分包含被检设备选择界面和检定项目选择界面,可获取波形、频率、幅值等数字信号,支持衰减电路、叠加电路以及输出导联的选择。从测试情况看,该检定仪系统操作界面简洁,人机交互友好,在不同条件下输出心率信号的精度均满足国家计量规程中的精度要求。This paper explores the design points of a portable low-power electrocardiogram measurement and calibration system based on RPI microprocessor,and tests its basic functions and calibration performance.The hardware part of the calibration instrument is centered around an RPI processor,which communicates with D/A converters,signal conditioning modules,signal superposition modules,etc.through USB ports,GPIO ports,etc.,and sends the processed signals to the device being tested;the software part includes a equipment under test selection interface and a verification item selection interface,which can obtain digital signals such as waveform,frequency,and amplitude,and support the selection of attenuation circuits,superposition circuits and output leads.Judging from the test situation,the operating interface of the calibration instrument system is simple,the human-computer interaction is friendly,and the accuracy of the output heart rate signal under different conditions meets the accuracy requirements in the national metrology regulations.

关 键 词：RPI处理器 检定仪 心率信号 导联选择 衰减电路 

分 类 号：TH77[机械工程—仪器科学与技术]