online signal peak detection

3 次查看（过去 30 天）
Rahim Yousefi
Rahim Yousefi 2021-4-15
评论： Rahim Yousefi 2021-4-15
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

请先登录，再回答此问题。

回答（1 个）

Ahmed Redissi
Ahmed Redissi 2021-4-15
If you have the Signal Processing Toolbox, try using the function "findpeaks". Here's how to use it:
https://www.mathworks.com/help/signal/ref/findpeaks.html
  1 个评论
Rahim Yousefi
Rahim Yousefi 2021-4-15
Thank you for your answer, but as I mentioned I want to perform an online (real time) peak detection. This is not possible with the Matlab signal processing toolbox.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Measurements and Feature Extraction 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by