Time between excitation wave and received waves
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If I have graph of voltage vs time for the excitation signal and the received signal for a material...how do I calculate the time it takes for the wave to move from one side of the material to the other side.. the blue signal is the excitation then the orange signal is the received one
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Jonas
2021년 6월 15일
can you provide an image or data so we can see the excitation signal and the resulting signal?
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Star Strider
2021년 6월 15일
Try this —
F = openfig('sample.fig');
Ax = gca;
Lines = findobj(Ax, 'Type','line')
sent = findobj(Lines,'DisplayName','Excitation Signal');
Xsent = sent.XData;
Ysent = sent.YData;
recd = findobj(Lines,'DisplayName','Received Signal');
Xrecd = recd.XData;
Yrecd = recd.YData;
Ysidx = Ysent>0.01; % Threshold Signal
Yridx = Yrecd>0.01; % Threshold Signal
Yss = find(Ysidx,1,'first'); % First 'true' Index
Yrs = find(Yridx,1,'first'); % First 'true' Index
[istart,istop,dist] = findsignal(Yrecd(Yridx), Ysent(Ysidx));
figure
findsignal(Yrecd(Yridx), Ysent(Ysidx))
grid
figure
subplot(2,1,1)
plot(Xsent, Ysent)
% text(Xsent([istart istop])+Xsent(Yss), [0 0], compose('\\leftarrow t = %8.5E', Xsent([istart istop])+Xsent(Yss)), 'Rotation',90)
title('Sent')
grid
subplot(2,1,2)
plot(Xrecd, Yrecd)
text(Xrecd([istart istop])+Xrecd(Yrs), [0 0], compose('\\leftarrow t = %8.5E', Xrecd([istart istop])+Xrecd(Yrs)), 'Rotation',90, 'Horiz','left', 'Vert','middle')
title('Received')
grid
.
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