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Vol. 157, Issue 10, October 2013, pp. 26-30

 

Bullet

 

Design on Electrocardiosignal Detection Sensor
 
Hao ZHANG

School of Mathematics and Computer Science, Tongling University, 244061, China
E-mail: ahzhanghao@yeah.net

 

Received: 18 August 2013   /Accepted: 25 September 2013   /Published: 31 October 2013

Digital Sensors and Sensor Sysstems

 

Abstract: The key of using a sensor to detect electrocardiosignal (ECG) is on extracting a weak signal from strong noise background and performing the high-gain amplification. The ECG characteristics and circuit model were analyzed in this study. The design included the detection sensor of four parts-preamplifier, high-pass and low-pass filter circuits, 50 Hz notch filter and main amplifier, and the sensor has a high common-mode rejection ratio (CMRR) and uses a special chip UAF42 to filter power frequency interference. It has been successfully applied to the ECG monitoring system to achieve good results.

 

Keywords: ECG, Driving circuit of right leg, Filter.

 

 

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