Detecting Horizontal Movement

[mackrackit]

At first I thought this was a "person carry" project.

I wish to detect my movement over ground

Mounting to a vehicle has more possibilities.
These a very nice units.
http://www.dickey-john.com/product/radar-ii/

[Ioannis]

Wow, nice sensor! And heavy too, over 2kg !

Darrel, i was thinking about the integration of accelerometer and humbly appologize for my doubts. The spikes in the oscilloscope snapshot clicked me.

Ioannis

[rsocor01]

Darrel, i was thinking about the integration of accelerometer and humbly appologize for my doubts. The spikes in the oscilloscope snapshot clicked me.

Ioannis

Well, I had my doubts too, but not anymore after studying Darrel's program .

There are a couple of things that I wanted to mention. First, for this program to work properly it is assumed that the initial speed of the integration is zero. In other words, it is assumed that when the program is started the speed that we want to measure is zero. Second, referring to Alain's comment

Try this into an elevator ( or an automated train ) and I promise you will stay a moment in it calling for help ... !!!

Alain

You have a point there. So, it is necessary to obtain all the 3-axis acceleration components (X, Y, and Z) and calculate the resultant acceleration vector to obtain a valid result for the speed. There shouldn't be any problems with this program.

Robert

[Ioannis]

it is necessary to obtain all the 3-axis acceleration components (X, Y, and Z)

Darrel noted that too.

Ioannis