一种基于虚拟仪器的交互式心电信号源系统

Interactive electrocardiograph signal source system based on virtual instrument

目的:为满足对心电类仪器的研发检测以及对其后续使用进行质量监控、心电检测算法的验证、心电自动诊断研究领域对特殊心电信号的需求,研究设计一种基于虚拟仪器的交互式心电信号源系统。方法:该系统运用软件技术通过绘图和插件组合编辑方式获得所需心电信号,通过DAQ硬件卡和归一化双端输出电路实现以相当于人体真实水平输出。结果:该系统实现了可人为地构建所需心电波形,调用、修改、显示已有心电信号,并可将其以相当于人体真实水平进行输出。结论:该心电信号源系统具有强大的交互式编辑扩展功能,理论上可产生任意所需心电信号,在心电类仪器的研发、质量检测、计量检定校准、心电检测算法的验证、心电自动诊断研究等领域有非常广阔应用前景。

Objective To test the research and development of electrocardiograph （ECG） instruments and offer quality monitoring in the subsequent use of ECG instruments, and to verify the ECG detection algorithm, and to meet the requirement for the special ECG signal in the field of ECG automated diagnosis research by studying and designing a kind of interactive ECG signal source system based on virtual instrument. Methuds The software technology of system was utilized to obtain the desired ECG signal by drawing and plug-in combination editing mode. The output signal close to the original ECG signal was obtained by using the DAQ card and normalized double-side output circuit. Results The desired ECG waveform was artificially built by using the system. And the ECG signal in the system was called, modified, displayed, and output in the level close to original ECG signal. Conclusion The ECG signal source system has a powerful interactive editing extension function. Theoretically, any desired ECG signal can be produced by using the system. The designed system has a broad application prospects in the research and development, quality test, verification and calibration of ECG instruments, the verification of ECG detection algorithm, ECG automatic diagnosis research and other fields.