Help me build ECG counter with AVR

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gharibe_12000

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hi
i want to build a counter for my ecg(ekg) final project.

i want do it whit " AVR ".

please help me !

i have a analog output in my schematic.

how can i do this?

can i do this whit " oc1a & oc1b " pins ?

tnx

( sorry about my bad english )
 

microcontroller ecg

Hi,
Basically you have to connect the analog output to a comparator with comparison threshold adjusted to mid value of QRS signal so that you get clean pulses corresponding to QRS. Now any micro can be used to compute the R-R interval or the heart rate by counting these pulses.

Regards,
 
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avr counter

You could sample the ECG ith the micro. And then use an qrs detection algoritm for the calculations. Use the pan & tompkins which is very good.
 

avr in ecg

hi

finaly i found a way !

i use a timer and a counter and interupts .

i create a 1 secend time ( ore biger time like 15 secend ).
enable interupts , ! when a interupts come counter increment a number .

when time is finished we have a number and can find total number .


≈≈≈:!::!::!::!:≈≈≈≈


( sorry about my bad english )
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