i work on ECG signal , i detect QRS complex , P wave and T wave
i need to know that heart rate equation :
heart_rate = length(Rloc)/(time_scale/60); true or false ??
and
R_R interval =(60/heart_rate); ??
and ST_Segment = (S_point - R_point)*140msec ???
if ST true how can i get S_point and R_point
What kind of equipment are you using for ECG signal acquisition?
Of course T=1/f therefore RR interval = 60/HR, for HR in beats / min and RR in seconds. as for the others, it depends on your sampling rate and other details of your detectors. My recommendation is 'Read the manual'. :-)
Dear Salma Rafat,
actually, heart rate is a pulse-rate (say R waves rate) modulated signal, wherein waves repetition rate changes depending on modulation of sinoatrial (SA) node. By measuring and interpolating the R-R intervals we are obtaining continuous time data. Equation for describing these time data in the frame of one simple, linear model of cardiovascular control were proposed by Akselrod et al. See https://www.researchgate.net/publication/19110966_Hemodynamic_regulation_investigation_by_spectral_analysis._Am_J_Physiol_249_H867-H875 If you have not already read this article, I would highly recommend you to read it.
Best regards
Article Hemodynamic regulation: Investigation by spectral analysis
Andrew A. Olkowski>>> i use matlab R2013a and MIT-BIH database
for detecting ST-Segment i use ST-T database
Fernando Soares Schlindwein>>>>i already read the manual but i use pan-Tompkins algorithm that i need to measure heart rate but in this one there are 2 heart rates appear i dont know which one can i use correctly ,and what about ST-segment equation ??
Dear Michael Gordon,
thanks for your recommendation i will read it ..
my problem is detecting the ST-segment as i get its equation
as ST = (S-point - R-point) * 140 sec
S-point mean S(x,y ) , R-point mean R(x,y)??
thanks for your help
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