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MMA8453Q - Interpreting XYZ Data individually - HPF low power active

Question asked by Mike Pedersen on Mar 22, 2017
Latest reply on Mar 23, 2017 by David Diaz Marin

Im currently monitoring acceleration while driving. 

High pass filtering is active with default value 0.25 Hz

Data rate is 6.25 Hz

 

Im struggling with how to identify acceleration on a single Axis?

My initial idea was to measure a baseline with the accelerometer in a fixed position, and then subtracting that baseline from my movement data. However this doesnt seem to give me any usable data without considering the data that should have been cut off by the high pass filter.

 

So my core question is how do i identify the values that should have been been filtered out?

 

My data consist of the xyz positional data.

 

The end goal is to be able to identify an exact threshold on which to have the accelerometer firing events.

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