total number of peaks in a signal

[SAIbme]

Hi.

I wolud like to know a method to find the total number of peaks a signal whose time duration is more than a minute.

I've attached a vi, which has a  simulated ECG signal for which the number of peaks has to be detected.

I've tried to get the number of peaks in an array every time the signal moves in the waveform, but it is not dispayed as array of numbers.

Kindly help me in solving this.

Good Day

[1984]

I can not open your VI at this point but generally speaking x(i) is a peak IF (x(i-1)<x(i)) AND (x(i+1)=<x(i))

Hpoe this helps.

[NapDynamite]

Hi SAIbme,

I have attached a VI along with a picture below. Hope this helps\

[SAIbme]

Hi NapDynamite,

Thanks for your reply. I can understand the VI you have sent me, but it works out only to find out the peaks at that instant of time.

I would like to find total number of peaks that appear in that waveform graph until the signal stops running (or until it is intentionally stopped). 

Kindly help me in solving this.

Good Day 

[Henrik_Volkers]

take a look at this one ...

http://forums.ni.com/t5/High-Speed-Digitizers/Continuous-pulse-counting/m-p/2403134#M4122

[Henrik_Volkers]

here is something to play with, but keep in mind that for ECG pulse counting this is not the best approach.

[SAIbme]

Hi Henrik_Volkers,

Thanks for your reply.

I went to the link which you suggested me,

http://forums.ni.com/t5/High-Speed-Digitizers/Continuous-pulse-counting/m-p/2403134#M4122,

and I downloaded the VI, pulse counting signal loop.VI, but i'm unable to run it since there are some sub VIs which I cannot open.

Also, in the VI, pulse.vi ‏23 KB, may I know how to replace 'read from measurement file.VI' instead of simulating the signal and how to control the value of 'N' to get better result ?

Good Day   

[SAIbme]

Hi 1984,

Thanks for your reply.

Kindly be more specific about implementing the equation which you have suggested " speaking x(i) is a peak IF (x(i-1)<x(i)) AND (x(i+1)=<x(i))" .

Can it be implemented using MATLAB script?

Please suggest me an idea for it.

Good Day  

[Henrik_Volkers]

just replace the sequence in the while loop with you datasource and delete the simulation part.

And don't expect ready solutions , we are not here to do your homework 😉

[Henrik_Volkers]

I don't have your subvis but here is a mod of your first post