How to determine peaks of an analog signal from Arduino ?

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HARVIN RAJ
HARVIN RAJ 2021-2-13
编辑： Shubham Khatri 2021-2-22
Hi, I need help to read analog signal from a sensor connected to Arduino and then count the number of peaks of the analog signal. I want to display the number of peaks of the analog signal as it's output. How can I use MATLAB to determine the peaks of the analog signal and count the number of peaks for 1 minute (timer). Thank you.

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回答（1 个）

Shubham Khatri
Shubham Khatri 2021-2-21
编辑：Shubham Khatri 2021-2-22
Hello,
You can read the signal from aurdino. I have attached the code below.
c=60;
while(c>0)
c=c-1;
readvalue = readvalue +1;
pause(1)
For index = 1:readvalue
analog(index) = readVoltage(a, 'A0');
Allvalues=analog(index) +Allvalues;
pause(0.1);
end
plot(index, Allvalues*5/1023)
yLabel('Volatge')
xLabel('time')
You can also visit the documentaion for readVoltage here.
To find the peaks within the signal you can use findpeak. For more information, please refer to the documentation link here.
Hope it helps

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