I have lots of vibration data that was recorded in multiple length time segments. For example, one group may contain 5 seconds of data, and the next group may contain 30 seconds. Each group contains 15 channels of accelerometer data (5 sensors with 3 axis/sensor).
What I would like to do is pragmatically scan through the data streams and capture the highest amplitude accelerations that occur in a given 1 second interval within a specified window of frequencies.
The data was collected at a sample rate of 1kHz resulting in FFTs that go up to 500Hz. However, I am actually only interested in frequencies between 1Hz and 50Hz.
If I get you right, you should filter the original channels - either with digital low pass (0 – 50 Hz) or a band pass filter (1 – 50 Hz). Then calculate the start and stop row for your 1 second interval and calculate the max amplitude with the statistic function. Repeating these 15 times for all channels it makes sense to create a script for these steps.
