Vibration_sensor

General
1

I want to plot a line chart of vibration sensor Data. Following is my flow. How can i plot a real time line chat using node red where x-axis will be frequency and y-axis will be amplitude.

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2

Welcome to the forum.

Could you please:

  • export your flow again (copy)
  • edit your post
  • put the code between backticks like:

```
your flow code
```

4

Thanks for the reply. I am new to node red.

My flow

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5

I would recommend that you start from plotting the time as xaxis and vibration amplitude as yaxis for the first step. Node Red Dashboard line chart is great for this case. There are usually three axes for a vibration sensor.

After this, then you need to look into FFT and power spectrum density (PSD) that can plot the frequency as the xaxis and energy amplitude as the yaxis. There is a Node Red Node called "node-red-contrib-fft", which might be helpful (I have not used this node personally).

6

You could plot freq and amplitude over real time using two lines in the ui:chart

7

What would be the manufacturer and model of the sensor ?

8

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