Return logged angular velocity data from Android sensor
Get Logged Angular Velocity Data from Android Sensor
This example assumes that you have already installed and set up MATLAB® Mobile™ on your Android™ device and connected it to your computer running MATLAB. For information about these steps, see Install MATLAB Mobile on Your Android Device and Sign In to the Cloud.
Start MATLAB Mobile on your Android device.
On the Sensors screen of MATLAB Mobile, tap the Angular Velocity sensor.
Place the device where you want to get the sensor data, if a remote location.
On your computer, create a
m, in MATLAB.
m = mobiledev
Begin logging data by enabling the
m.Logging = 1
This action starts the transmitting of data from all selected sensors. You can also start transmission by tapping the Start button in MATLAB Mobile on the device.
Get the logged angular velocity data.
[av, t] = angvellog(m)
This returns the angular velocity log, where
contains the three data points in
Z rotations, in
radians per second.
See Device Orientation for a diagram showing the
Z axes relative to
log — Name of variable for angular velocity log data
Name of variable for angular velocity log data, returned as an
m-by-3 matrix of data points from the Angular
Velocity sensor on the Android device. The three data points are the angular velocity
Z rotations, in radians per second.
Angular velocity is defined in relation to the
Z axes and in standard right-hand rotational
vector notation. If you place the device face-up on a table, the
positive X-axis extends out of the right side of the device,
positive Y-axis extends out of the top edge, and the positive Z-axis
extends out of the front face of the device. This is independent of
the orientation of the device.
timestamp — Name of variable for timestamp
Name of variable for timestamp, returned as an
m-by-1 vector of timestamps from the Angular
Velocity sensor on the Android device. Time is in seconds, relative