基于嵌入式技术的心电监护仪抗干扰设计  

Anti-interference design of electrocardiogram monitor based on embedded technology

作　　者：陈斌 顾珑 CHEN Bin;GU Long(Changzhou NO.2 People’s Hospital,Changzhou Jiangsu 213161,China)

机构地区：[1]常州市第二人民医院,江苏常州213161

出　　处：《自动化与仪器仪表》2024年第5期272-275,共4页Automation & Instrumentation

摘　　要：心电监测系统在医学临床、飞行员选拔和运动健康等重要领域具有巨大价值。然而,由于高频干扰、工频干扰等问题,心电信号的转折性和识别存在困难。研究通过对心电噪声和心电信号本身频谱图的详细分析,进行了心电噪声预处理。研究采用自适应步长的LMS滤波器,能够根据噪声的强度自动调整。实验在横坐标0~1 200数据点范围内,低频振幅在-4到2之间,高频振幅在-1到1之间。频率上升到400兆赫后,场强迅速降低,最后达到1 000兆赫,场强最低为11.4 V/m,平均场强为31.35 V/m。通过去噪处理,可以更准确地监测和分析心电信号,为医学临床、飞行员选拔和运动健康等领域提供更精确的数据支持,同时也为患者提供了更便利的医疗监测和生活条件。The electrocardiogram monitoring system has great value in important fields such as medical clinical practice,pilot selection,and exercise health.However,due to issues such as high-frequency interference and power frequency interference,the turning point and recognition of electrocardiogram signals are difficult.The study conducted a detailed analysis of electrocardiogram noise and the spectrum of the electrocardiogram signal itself,and conducted electrocardiogram noise preprocessing.The research adopts an LMS filter with adaptive step size,which can automatically adjust according to the intensity of noise.The experiment was conducted within the range of 0 to 1200 data points on the horizontal axis,with low-frequency amplitudes ranging from-4 to 2 and high-frequency amplitudes ranging from-1 to 1.After the frequency rises to 400 MHz,the field strength rapidly decreases and finally reaches 1000 MHz,with a minimum field strength of 11.4 V/m and an average field strength of 31.35 V/m.Through denoising processing,electrocardiogram signals can be more accurately monitored and analyzed,providing more accurate data support for medical clinical practice,pilot selection,and sports health,while also providing more convenient medical monitoring and living conditions for patients.

关 键 词：心电监护 嵌入式 心电噪音 医学领域 频谱图 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]