hope u r fine.....we are final year students of biomedical engineering currently
working on project (Vital Signs Monitoring using LabVIEW). we are measuring 4
parameters i.e temperature, pulse oximeter, heart rate and blood pressure. we are
using DAQ card (PXI-6229) for interfacing hardware with LABVIEW.
we have to ask certain questions related to our project....
Currently working on Blood Pressure:
We are using MPX5050Dp pressure sensor, DC motor and valve. We are doing the
programming of blood pressure...we've done the programming of both motor and valve
control...and have also acquire pressure sensor voltage and have convert it into
mmHg.(also got bp graph)...
Sampling frequency =10kHz
Sampling rate =10Khz
And apply low pas filter and then band pas filter.
= low pass filter = 20hz order 6th order butterworth
= bandpass filter= 0.5-20hz order 6 butterworth
we are getting right graph but we are still unable to find mean arterial pressure
(map) and sytolic diastolic pressures.
from band pass filter graph we want to acquire the largest amplitude peak (which is
we tried different vi to got the largest amplitude but we are failed ....
• max min array vi
• analog max min waveform vi
• amplitude and level vi( peak to peak)
• Power spectrum and FFT vi for max peak detection
• Peak detector
and also apply many program but …
from all these vi and program we've got amplitude of all peaks in the graph( which
we did not want)...we want only one largest amplitude..
we have generated array in which same value comes in each index. but we want to store all positive peaks .. and then retrieve maximum value from that array to find mean arterial pressure..suggest any way to generate different values at a time
we need ur help ..plz give some suggestions