I am on a project to track the human body motion in to a 3d design and animation software. I found that acccelerometers are used for these purposes. According to my project what I will need is the path coordinates on which the human hand or other part moves. This can be done if I get the speed and integrate them i will find the path. But accelerometers by name seems that they gives the acceleration of the object they are attached, that is an object at rest will output zero and at shake time output some value and at motion time then output zero. So my question is this that does accelerometers outputs the accceleration of object or the force applied on them at a direction? If it is the force applied on a direction then it can work for me.
The unit of accelerometer module output
accelerometergyroscope
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Best Answer
Accelerometers measure acceleration. Integrate twice for position with respect to time. Doing that for each axis provides a 3D position.
In theory. For the real world it's not even close to that simple. Doing a simple double integration will be reliable for less than a few seconds. If you want to find out a better way, then you'll need to ask a different question. Though you'll likely find it answered on this site already.
Typically accelerometers are not used for this because it's so unreliable. What people usually use are cameras and motion capture.