摘要
介绍了心电测试仪的工作原理和功能框图,指出心电信号的采集放大、高低通滤波和50Hz带阻滤波器设计是系统设计的重点,着重分析研究了心电测试仪中有源低通滤波器、有源高通滤波器和有源带阻滤波器的频率响应特性,并给出了心电测试仪的频响图。
The principle and functional block diagram of the electrocardiograph (ECG)testing meter are introduced.At first,it is put forward that the key points of the system design are the circuit designs of the ECG signal acquisition,amplification, high-pass and low-pass filters and 50Hz stop filter.The frequency response of the power low pass filter and the power high pass filter and the power notch filter is analyzed and studied,and it is given the frequency responses chat of the ECG testing meter.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2004年第z1期206-208,共3页
Chinese Journal of Scientific Instrument
关键词
信号采集
滤波器
频
率
频响图
Signal acquisition Filter Frequency Frequency responses chat
