Contents
What does a 3-axis accelerometer measure?
What is a three-axis accelerometer? A 3-axis accelerometer measures the accelerations that take place in relation to the 3 Cartesian coordinate axes. In other words, it can gauge the changes in the speed of a point.
What can an accelerometer measure?
An accelerometer is a device that measures the vibration, or acceleration of motion of a structure. The force caused by vibration or a change in motion (acceleration) causes the mass to “squeeze” the piezoelectric material which produces an electrical charge that is proportional to the force exerted upon it.
What do you need to get good position accuracy?
To get good good position accuracy, you need some kind of position reference. Exactly what this is depends on how far you want the device to travel. If you only want to travel a metre or so, I recommend forgetting about the IMU and using a magnetic trcker like the miniBIRD. For a longer distance you can use GPS.
How to calculate speed and distance from a 3 axis accelerometer?
Freescale has published a very good paper on the subject. I would use IIR filters designed using polynomial regression with an exponentially fading memory. That would give you smoothed acceleration data. A GW indicates, you would need to cascade one integrator to get vel and two integrators to get pos.
How is the position of an object determined by accelerometer?
The double integration of acceleration gives the position of an object. However, how should the position of an object fitted with accelerometer and gyroscope be determined using the data from the two sensors. How can I reduce noise from accelerometer and gyroscope values of the nao robot for classification?
Do you need IMU to get good position accuracy?
To get good good position accuracy, you need some kind of position reference. Exactly what this is depends on how far you want the device to travel. If you only want to travel a metre or so, I recommend forgetting about the IMU and using a magnetic trcker like the miniBIRD.