at what data rate should i take values? and how to code for it
1 次查看(过去 30 天)
显示 更早的评论
I am using arduino matlab along with pulse sensor and I am not satisfied with the output as I dont think I am getting dicrotic curve I have written my current code and output that I am getting and what I am hoping to get. Also will any signal processing technique improve the output. please help.
output obtained
current code:
clear all
close all
clc;
a = arduino();
%%
v=zeros(500,1);
t=seconds(v);
t0=datetime('now');
for c=1:500
v(c) = readVoltage(a,'A0');
t(c)=datetime('now')-t0;
end
%%
plot(1:c,v);
title('Vata');
expected output
0 个评论
回答(1 个)
Star Strider
2019-2-7
For cardiovascular data (including EKG) recording, the minimum sampling frequency is generally considered to be 250 Hz, giving a Nyquist frequency of 125 Hz. This will capture all the necessary data, and allow for filtering and other data processing. You can always downsample the data later if you want, however you cannot create data that you did not originally record.
8 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Instrument Control Toolbox 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!