生醫訊號處理報告 PPG · PDF file生醫訊號處理報告 ppg 組員名單 4a227001陳威丞 4a227020張奕凱 4a227034林昱佑 4a227038黃聖閔 ... 數位處理後級放大器

PPG
4A227001
4A227020
4A227034
4A227038 :

PPG
PPG
PPG
PPG

PPG
PPG(Photoplethysmography)

PPG0.5Hz15Hz
PPG

PPG
: LED LED

PPG
1. (1)
2. (2)
(1) (2)

PPG
MSP430
MATLAB
0.5HZ
15HZ
CNY70

ppg 51020

:0.515Hz Fs():1024Hz

T=1/fs; subplot(212)
fd=1/(N*T); plot(fy,angle(y_fft))
m=0:N-1; title('Phase spectrum of signals')
fy=m.*fd; xlabel('Frequency (Hz)')
y_fft=fft(y); ylabel('phase')
figure(2)
subplot(211)
plot(fy,abs(y_fft))
title('Magnitude spectrum of signals')
xlabel('Frequency (Hz)')
ylabel('Magnitude')

(fc)
Butterworth IIR :0.5hz :15hz
:0.05hz :30hz
1 60 :11 :4
Elliptic IIR :0.5hz :15hz
:0.05hz :30hz
1 60 :5 :3
Chebyshev
I
IIR :0.5hz :15hz
:0.05hz :30hz
1 60 :7 :3
Chebyshev
II
IIR :0.5hz :15hz
:0.05hz :30hz
1 60 :7 :3
Kaiser FIR :0.5hz :15hz
:0.05hz :30hz
5% 1% :153 :5080

clc
clear all
close all
SignalPPG = csvread('ch3.csv');
fs=1024;
T=1/fs;
N=length(SignalPPG);
t=(0:N-1)/fs;
fd=1/(N*T);
m=0:N-1;
fy=m.*fd;
% SignalPPG_base=detrend(SignalPPG);
figure(1)
subplot(111)
plot(t,SignalPPG_base)
xlabel('t (sec)')

Butterworth
NR=fs/2; %Nyquist rate
[n1,Wn1]=buttord(15/NR,30/NR,1,60);%
[b1,a1]=butter(n1,Wn1);
butterlow=filtfilt(b1,a1,SignalPPG_base);
[h1,f1]=freqz(b1,a1,512,fs);
[n2,Wn2]=buttord(0.5/NR,0.05/NR,1,60);%
[b2,a2]=butter(n2,Wn2,'high');
butterhigh=filtfilt(b2,a2,SignalPPG_base);
butterband=filtfilt(b2,a2,butterlow);%+
[h2,f2]=freqz(b2,a2,512,fs);

figure(2)
subplot(211)
plot(f1(1:15),abs(h1(1:15)))
ylabel('H(w)')
title('Lowpass filter 15Hz')
subplot(212)
plot(f2(1:15),abs(h2(1:15)))
ylabel('H(w)')
title('Highpass filter 0.5Hz')

Butterworth(5501300) SignalPPG_butterband1300=butterband(550:1300);
figure(3)
plot(t(550:1300),SignalPPG_butterband1300)
title('Signals')
xlabel('Time (sec)')
ylabel('Amplitude')

Butterworth 0
L=2048;
fd=1/(L*T);
m=0:L-1;
fy=m.*fd;

Butterworth SignalPPG_butterband1300_re=SignalPPG_butterband1300.*boxcar(length(Sign
alPPG_butterband1300));
SignalPPG_butterband1300_hann=SignalPPG_butterband1300.*hanning(length(SignalPPG_butterband1300));
SignalPPG_butterband1300_hamm=SignalPPG_butterband1300.*hamming(length(SignalPPG_butterband1300));
SignalPPG_butterband1300_bm=SignalPPG_butterband1300.*blackman(length(SignalPPG_butterband1300));
SignalPPG_butterband1300_tr=SignalPPG_butterband1300.*triang(length(SignalPPG_butterband1300));
SignalPPG_butterband1300_re_fft=fft(SignalPPG_butterband1300_re,L);
SignalPPG_butterband1300_hann_fft=fft(SignalPPG_butterband1300_hann,L);
SignalPPG_butterband1300_hamm_fft=fft(SignalPPG_butterband1300_hamm,L);
SignalPPG_butterband1300_bm_fft=fft(SignalPPG_butterband1300_bm,L);
SignalPPG_butterband1300_tr_fft=fft(SignalPPG_butterband1300_tr,L);

figure(10)
subplot(521)
plot(t(550:1300),SignalPPG_butterband1300_re)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(522)
plot(fy(1:60),abs(SignalPPG_butterband1300_re_fft(1:60)))
axis([0 30 0 20000])
xlabel('f (Hz)')
subplot(523)
plot(t(550:1300),SignalPPG_butterband1300_hann)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(524)
plot(fy(1:60),abs(SignalPPG_butterband1300_hann_fft(1:60)))
xlabel('f (Hz)')
axis([0 30 0 20000])
subplot(525)
plot(t(550:1300),SignalPPG_butterband1300_hamm)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')

subplot(526)
plot(fy(1:60),abs(SignalPPG_butterband1300_hamm_fft(1:60)))
axis([0 30 0 20000])
xlabel('f (Hz)')
subplot(527)
plot(t(550:1300),SignalPPG_butterband1300_bm)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(528)
plot(fy(1:60),abs(SignalPPG_butterband1300_bm_fft(1:60)))
xlabel('f (Hz)')
axis([0 30 0 20000])
subplot(529)
plot(t(550:1300),SignalPPG_butterband1300_tr)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(5,2,10)
plot(fy(1:60),abs(SignalPPG_butterband1300_tr_fft(1:60)))
xlabel('f (Hz)')
axis([0 30 0 20000])

elliptic [n3,Wn3]=ellipord(15/NR,30/NR,1,60) ;%
[b3,a3]=ellip(n3,1,60,Wn3);
elliplow=filtfilt(b3,a3,SignalPPG_base);
[h3,f3]=freqz(b3,a3,512,fs);
[n4,Wn4]=ellipord(0.5/NR,0.05/NR,1,60);%
[b4,a4]=ellip(n4,1,60,Wn4,'high');
elliphigh=filtfilt(b4,a4,SignalPPG_base);
[h4,f4]=freqz(b4,a4,512,fs);
ellipband=filtfilt(b4,a4,elliplow);%+
ellipband_fft=fft(ellipband);

figure(2)
subplot(211)
plot(f3(1:15),abs(h3(1:15)))
ylabel('H(w)')
subplot(212)
plot(f4(1:15),abs(h4(1:15)))
ylabel('H(w)')

elliptic(5501300) SignalPPG_ellipband1300=ellipband(550:1300);
figure(9)
plot(t(550:1300),SignalPPG_ellipband1300)
title('Signals')
ylabel('Amplitude')

Elliptic 0
L=2048;
SignalPPG_base1300_fft=fft(SignalPPG_base1300,L);
fd=1/(L*T);
m=0:L-1;
fy=m.*fd;

Elliptic SignalPPG_ellipband1300_re=SignalPPG_ellipband1300.*boxcar(len
gth(SignalPPG_ellipband1300));
SignalPPG_ellipband1300_hann=SignalPPG_ellipband1300.*hanning(length(SignalPPG_ellipband1300));
SignalPPG_ellipband1300_hamm=SignalPPG_ellipband1300.*hamming(length(SignalPPG_ellipband1300));
SignalPPG_ellipband1300_bm=SignalPPG_ellipband1300.*blackman(length(SignalPPG_ellipband1300));
SignalPPG_ellipband1300_tr=SignalPPG_ellipband1300.*triang(length(SignalPPG_ellipband1300));
SignalPPG_ellipband1300_re_fft=fft(SignalPPG_ellipband1300_re,L);
SignalPPG_ellipband1300_hann_fft=fft(SignalPPG_ellipband1300_hann,L);
SignalPPG_ellipband1300_hamm_fft=fft(SignalPPG_ellipband1300_hamm,L);
SignalPPG_ellipband1300_bm_fft=fft(SignalPPG_ellipband1300_bm,L);
SignalPPG_ellipband1300_tr_fft=fft(SignalPPG_ellipband1300_tr,L);

figure(13)
subplot(521)
plot(t(550:1300),SignalPPG_ellipband1300_re)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(522)
plot(fy(1:60),abs(SignalPPG_ellipband1300_re_fft(1:60)))
axis([0 30 0 20000])
xlabel('f (Hz)')
subplot(523)
plot(t(550:1300),SignalPPG_ellipband1300_hann)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(524)
plot(fy(1:60),abs(SignalPPG_ellipband1300_hann_fft(1:60)))
xlabel('f (Hz)')
axis([0 30 0 20000])
subplot(525)
plot(t(550:1300),SignalPPG_ellipband1300_hamm)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')

subplot(526)
plot(fy(1:60),abs(SignalPPG_ellipband1300_hamm_fft(1:60)))
axis([0 30 0 20000])
xlabel('f (Hz)')
subplot(527)
plot(t(550:1300),SignalPPG_ellipband1300_bm)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(528)
plot(fy(1:60),abs(SignalPPG_ellipband1300_bm_fft(1:60)))
xlabel('f (Hz)')
axis([0 30 0 20000])
subplot(529)
plot(t(550:1300),SignalPPG_ellipband1300_tr)
axis([0.5 1.5 -100 100])
xlabel('t (sec)')
subplot(5,2,10)
plot(fy(1:60),abs(SignalPPG_ellipband1300_tr_fft(1:60)))
xlabel('f (Hz)')
axis([0 30 0 20000])

Chebyshev I
NR=fs/2; %Nyquist rate
[n1,Wn1]=cheb1ord(15/NR,30/NR,1,60);%
[b1,a1]=cheby1(n1,1,Wn1);
cheby1low=filtfilt(b1,a1,SignalPPG_base);
[h1,f1]=freqz(b1,a1,512,fs);
[n2,Wn2]=cheb1ord(0.5/NR,0.05/NR,1,60);%
[b2,a2]=cheby1(n2,1,Wn2,'high');
cheby1high=filtfilt(b2,a2,SignalPPG_base);
cheby1band=filtfilt(b2,a2,cheby1low);%+
[h2,f2]=freqz(b2,a2,512,fs);

figure(4)
subplot(211)
plot(f3(1:30),abs(h3(1:30)))
ylabel('H(w)')
subplot(212)
plot(f4(1:30),abs(h4(1:30)))
ylabel('H(w)')

ChebyshevI (5501300) SignalPPG_cheby1band1300=cheby1band(550:1300);
figure(5)
plot(t(550:1300),SignalPPG_cheby1band1300)
title('Signals')
ylabel('Amplitud

Documents

生醫訊號處理報告 PPG · PDF file生醫訊號處理報告 ppg 組員名單 4a227001陳威丞 4a227020張奕凱 4a227034林昱佑 4a227038黃聖閔 ... 數位處理 後級放大器

生醫訊號處理報告 PPG · PDF file生醫訊號處理報告 ppg 組員名單 4a227001陳威丞 4a227020張奕凱 4a227034林昱佑 4a227038黃聖閔 ... 數位處理後級放大器