基于过采样技术的生物电信号检测.pdf

7 Vol. 36 No.7 2008 7 ACTA L CTRONICA SINICA July 2008 李 刚, 张丽君, 林 凌, 何 峰 ( , 300072) : ,., . , . . : ; ; ; : TP271+ 81 : A : (2008) Research of Bioelectricity Signal Detection Based on Oversampling LI Gang,ZHANG Lijun, LIN Ling, H Feng ( Biomedical Signal Detecting and Processing Laboratory , Tianj in University , Tianj in 300072, China) Abstract : In order to bring the speed potential of the middling resolution ADC to play effectively,predigest the design of bioelectricitical amplifier and reduce its cost, oversampling is used to detect bioelectricity in this paper. Human s CG detection based on oversampling is used to check it s validity, and three sample methods are utilized to experiment.The results show that the CG has better precision and SNR by the method of oversampling than the conventionality.Thismethod can be applied to various bioelectricity signal detection widely. Key words: oversampling;bioelectricity detection;analog to digital converter;resolution . 1 [8] , 1786 , Luigi Galvani . , . 2 , Willam nthoven [ 1] , , ( ) , , , , , , [ 9] . , , , , , , , , , : , . f s f N f s , , [2] . , , kf s ( k