circuits of different advanced qrs filters
I'm designed a Holter Monitor and made the prototype already, now i'm working on the software to perform QRS detection. Anyone know a simple procedure to do it, I've done searches online, and found out that first there needs to be a bandpass filter before a differentiator and then a squaring function. Seems a bit hard, but i've only got 2 weeks to do this. Can someone help me, i'll be using matlab, so any help would be greatly appreciated.
First, I've got to design FIR filters that filter out 11Hz and 0.5Hz
Then I've got to design a differentiator implementing a 5 point derivative
Then I've got to implement a squaring function
and finally a Moving Window Integrator
All this is basically done and outlined in the attachment. The problem is my digital circuit samples at 250 samples per second and not 400 samples, what do I need to change? Any text on this matter would be greatly appreciated. Any suggestion on good Digital filter and differentiator would also be helpful.
Thank you.