Calculate velocity and distance of XDK sensor. Millimeter accuracy desired.

[Mishra]

Hello Team,

I have been struggling to calculate Velocity and Distance traveled by XDK. For this, I am using the calibrated accelerometer and unfortunately, the results are not good. I have used both V = At ( to calculate instantaneous velocity )and V = U +At (U = Initial velocity). t = 5ms ( XDK is set to send data after every 5ms ).

I saw a demo of the XDK app using the mobile app. Is it possible to get the code used to find accurate measurements of XDK movements? I need precise movements so we can calculate mm (if not at least cm) level accuracy in XDK position shift. Please advice. 

Thanks for reading.
Cheers,

[Mishra]

Dear Members,

Kindly help

[Karthiga_R · Accepted solution]

Hi Mishra,

In workbench there is an example application called SendVirtualSensorDataOverUsb.

in Appcontroller.c file enable linear accel sensor in VirtualSensor_Enable_T struct. Using linear accel value, I moved XDK device approx 6 cm.

I calculated displacement using V= At as u mentioned. I used average accel value. Refer attached image.

Thank You 🙂