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pic16f877a heart beat monitor

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RimX

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i need a Mikro C code to calculate the Heart rate pulse on pic16f877a
 

SunnySkyguy

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Accuracy of peak detector is critical to avoid false transitions. This generally uses a BPF filter , matched to the spectrum of the heartbeat with AGC and a comparator with optimal hysteresis.
Then for 3 digit resolution on rate from 0.8 to 3 Hz the time interval counter must be at least 1000x faster. And 4 digit resolution 10k faster.
Due to beat to beat variation, std deviation will reduce usually by 1/ root N samples averaged, so 9 seconds reduces variation in results by 3.
 

RimX

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i am using this Design i just need the code with working Proteus :bang:


HeartRateMeasurementCkt1.jpgIMG-20150520-WA0000.jpg
 

betwixt

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If you want someone to design it for you I'm sure plenty of people will be happy to quote you a price.

Otherwise, please tell us what you have achieved so far and what problems you are seeing. We will happily advise.

If you are expecting good results from that layout, think again!

Brian.
 

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