如何使用 Android 1.6 中加速度计的 x、y、z 值计算 g 力

Question

I can get the three x, y, and z values from the accelerometer in Android. How can I use these to calculate the g-force?

Answer 1

If the accelerometer measures acceleration in meters per second squared (the SI unit), you can convert each acceleration into a g-force measurement by dividing by 9.81 .

If you want the g-force as an directionless measurement, you just need to apply the pythagorean theorem to the different components of the acceleration:

double g = Math.sqrt(x * x + y * y + z * z);

Answer 2

Just select TYPE_GRAVITY instead of TYPE_ACCELEROMETER as sensor type:

https://developer.android.com/guide/topics/sensors/sensors_motion.html#sensors-motion-grav