为了实现同步同时观察左、右心室正后壁的情况,解决动态心电图改变长时间同步监测难问题,本文介绍了一种18导联心电监测系统。心电信号经过调理电路送入心电图(ECG)模拟前端ADAS1000芯片,MSP430控制器经SPI接口实现与心电图模拟前端的通...为了实现同步同时观察左、右心室正后壁的情况,解决动态心电图改变长时间同步监测难问题,本文介绍了一种18导联心电监测系统。心电信号经过调理电路送入心电图(ECG)模拟前端ADAS1000芯片,MSP430控制器经SPI接口实现与心电图模拟前端的通讯,并对数据进行分析处理,在上位机MATLAB软件上显示相应的波形。基于ADAS1000的18导联心电仪的导联功耗不大于15 m W,且导联同时工作的功耗不大于100 m W,实现了全天24小时的实时监测,以200 Hz的采样频率检测出不同人群,不同情况下的心电信号波形,获得全面的动态心电资料且成本低廉,在冠心病、心肌缺血、心律失常诊断中具有一定的实用和市场价值。展开更多
针对传统心电监护装置电路结构复杂、体积大、携带不便等问题,设计一种高度集成的便携式无线心电监护系统。系统采用模拟前端SOC(System On Chip)芯片ADS1298作为心电信号(ECG:Electro Cardio Gram)测量的核心芯片,结合高速、低功耗的...针对传统心电监护装置电路结构复杂、体积大、携带不便等问题,设计一种高度集成的便携式无线心电监护系统。系统采用模拟前端SOC(System On Chip)芯片ADS1298作为心电信号(ECG:Electro Cardio Gram)测量的核心芯片,结合高速、低功耗的单片机STC12LE5A60S2以及无线传输模块,再将ECG数据传输给上位机,由Lab VIEW软件编写的程序完成ECG信号处理。测试结果表明,该系统具有电路结构简单、体积小,抗干扰能力强、便携式、高精度等优点,有利于对心血管疾病的院前发现、防治和远程诊治,同时降低了心源性猝死的发生率。展开更多
This paper describes a low-power portable sensor interface dedicated to sensing and processing elec- trocardiogram （ECG） signals. Dry electrodes were employed in this ECG sensor, which eliminates the need of conduct...This paper describes a low-power portable sensor interface dedicated to sensing and processing elec- trocardiogram （ECG） signals. Dry electrodes were employed in this ECG sensor, which eliminates the need of conductive gel and avoids complicated and mandatory skin preparation before electrode attachment. This ECG sensor system consists of two ICs, an analog front-end （AFE） and a successive approximation register analog-to- digital converter （SAR ADC） containing a relaxation oscillator. This proposed design was fabricated in a 0.18 #m 1P6M standard CMOS process. The AFE for extracting the biopotential signals is essential in this ECG sensor. In measurements, the AFE obtains a mid-band gain of 45 dB, referred noise of 2.8μV rms while consuming 1μW from the a bandwidth from 0.6 to 160 Hz, and a total input 1.8 V supply. The noise efficiency factor （NEF） of our design is 3.4. After conditioning, the amplified ECG signal is digitized by a 12-bit SAR ADC with 61.8 dB SNDR and 220 fJ/conversion-step. Finally, a complete ECG sensor interface with three dry copper electrodes is demonstrated in real-word setting, showing successful recordings of a capture ECG waveform.展开更多
文摘为了实现同步同时观察左、右心室正后壁的情况,解决动态心电图改变长时间同步监测难问题,本文介绍了一种18导联心电监测系统。心电信号经过调理电路送入心电图(ECG)模拟前端ADAS1000芯片,MSP430控制器经SPI接口实现与心电图模拟前端的通讯,并对数据进行分析处理,在上位机MATLAB软件上显示相应的波形。基于ADAS1000的18导联心电仪的导联功耗不大于15 m W,且导联同时工作的功耗不大于100 m W,实现了全天24小时的实时监测,以200 Hz的采样频率检测出不同人群,不同情况下的心电信号波形,获得全面的动态心电资料且成本低廉,在冠心病、心肌缺血、心律失常诊断中具有一定的实用和市场价值。
基金supported by the National High Technology Research and Development Program of China(No.2100AA100701)the National Natural Science Foundation of China(Nos.61076027,61177021)the State Key Laboratory of ASIC & System,Fudan University
文摘This paper describes a low-power portable sensor interface dedicated to sensing and processing elec- trocardiogram （ECG） signals. Dry electrodes were employed in this ECG sensor, which eliminates the need of conductive gel and avoids complicated and mandatory skin preparation before electrode attachment. This ECG sensor system consists of two ICs, an analog front-end （AFE） and a successive approximation register analog-to- digital converter （SAR ADC） containing a relaxation oscillator. This proposed design was fabricated in a 0.18 #m 1P6M standard CMOS process. The AFE for extracting the biopotential signals is essential in this ECG sensor. In measurements, the AFE obtains a mid-band gain of 45 dB, referred noise of 2.8μV rms while consuming 1μW from the a bandwidth from 0.6 to 160 Hz, and a total input 1.8 V supply. The noise efficiency factor （NEF） of our design is 3.4. After conditioning, the amplified ECG signal is digitized by a 12-bit SAR ADC with 61.8 dB SNDR and 220 fJ/conversion-step. Finally, a complete ECG sensor interface with three dry copper electrodes is demonstrated in real-word setting, showing successful recordings of a capture ECG waveform.
