online signal peak detection
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Hello,
I have a script for reading sensor data from a gas sensor. The sensors are connected to an Arduino, I read the data from Arduino through Matlab. Attached you can find my Matlab script. The sensor generates a signal which has a peak every 5 minutes. I want to detect the point where the signal starts to increase and the point where the signal starts to increase (the min and max value of the peak). I want to perform this online (real time). The method I perform for peak detection is: I check the last 6 values of the sensor and if there is a increase in the last three values, I detect a min value and if there is an increase of the last three values, I detect an max value (this part of the script starts from line 263). However this method is not accurate and doesn’t work well sometimes. Could anyone recommend a better way of peak detection?
I have also attached an excel file so you can see how the data of the sensor look like.
Thanks in advance
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Ahmed Redissi
2021-4-15
If you have the Signal Processing Toolbox, try using the function "findpeaks". Here's how to use it:
另请参阅
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