Accelerometer

Measure linear acceleration along X, Y, and Z axes in m/s²

• Library:

• Simulink Support Package for Android Devices / Sensors

• 

Description

Use the Accelerometer block to measure linear acceleration along the X, Y, and Z axes in m/s².

The following illustration shows the X, Y, and Z orientation axes relative to a typical Android™ mobile phone.

The following illustration shows the X, Y, and Z orientation axes relative to a typical Android tablet.

The X, Y, and Z orientation axes relative to the device remain constant. For example, if you place the device face-up on a table, the Z-axis measures the acceleration of Earth gravity and outputs ≈ 9.81 in m/s². The X and Y axes, which are perpendicular to the acceleration of Earth gravity, both output ≈ 0.00 in m/s².

Note

During simulation with no hardware connected, this block does nothing. For more information, see Block Produces Zeros or Does Nothing in Simulation.

Ports

Output

X — X-axis accelerometer data

scalar

The block outputs the X-axis accelerometer data of the device.

Data Types: single

Y — Y-axis accelerometer data

scalar

The block outputs the Y-axis accelerometer data of the device.

Data Types: single

Z — Z-axis accelerometer data

scalar

The block outputs the Z-axis accelerometer data of the device.

Data Types: single

Parameters

Sample time — Time interval of sampling

0.1 (default) | nonnegative scalar

Specify a discrete time interval, in seconds, at which the block reads the accelerometer sensor of the device and outputs the data.

Note

Smaller values for Sample time require the processor to complete the same number of instructions in less time, which can cause task overruns.

Version History

Introduced in R2014a