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ADXL345 accelerometer fall detection

Question asked by Mridula_Vijay on Jan 17, 2017
Latest reply on Feb 10, 2017 by Anthony.DeSimone

Hi,

 

We are currently using ADXL345 accelerometer for our fall detection algorithm purposes. We had plotted accelerometer data by taking the x, y, z values. We had set our own thresholds in the ADXL registers but unfortunately alerts are coming even if the pendant alone falls to the ground(in the absence of the person). Then we tried repeating the alert mechanism by substituting your threshold values(as given in the ADXL345 APPLICATION NOTE). But in that case also alert is raised even when the pendant alone falls. Could you please explain the cause for this?

Along with this, is there any method to distinguish the fall of pendant and body fall with pendant?

 

Regards

Mridula

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