【實用工具app】Simple Linear Acceleration|最夯免費app-綠色工廠好玩App

Simple Linear Acceleration measures the linear acceleration of your Android device without a second sensor!

Linear Acceleration:

An acceleromter can measure the static gravitation field of earth (like a tilt sensor) or it can measure measure linear acceleration (like accelerating in a vehicle), but it cannot measure both at the same time. When talking about linear acceleration in reference to an acceleration sensor, what we really mean is Linear Acceleration = Measured Acceleration - Gravity. The hard part is determining what part of the signal is gravity.

Most of the time measuring linear acceleration requires a gyroscope and not a lot of Android phones have them. So, should you be punished by not being able to measure your linear acceleration just because you don't have a gyroscope? Nope!

The Problem:

It is difficult to sequester the gravity component of the signal from the linear acceleration. Some Android devices implement Sensor.TYPE_LINEAR_ACCELERATION and Sensor.TYPE_GRAVITY which perform the calculations for you. Most of these devices are new and equipped with a gyroscope. If you have and older device and do not have a gyroscope, you are going to face some limitations with Sensor.TYPE_ACCELERATION. The tilt of the device can only be measured accurately assuming the device is not experiencing any linear acceleration. The linear acceleration can only be measured accurately if the tilt of the device is known.

A Simple Solution:

One of the most simple solutions to the linear acceleration problem is to measure the orientation of the device while it is static, i.e. not experiencing any angular or linear acceleration. The measured orientation will be used to determine the gravity component of the acceleration measurements until a new measurement can be taken.

What would you want to measure the linear acceleration of? Lots of freaking amazing stuff.

For example, you can measure the linear acceleration of (not recommended):

• Your car driving around a road course

• Your mountain bike going up a hill

• Your plane accelerating

• Your dog chasing your cat

• Your R/C truck flying through the air

• Your rockets for your science fair project

Totally impress your friends with all these cool features!

Features:

• Log all of your data in real-time

• Spiffy gauges to display the outputs

• Pretty graphs to visualize how awesome your filter is working

Yup, you can make your phone at least 10 times more amazing (rough estimate) by downloading Simple Linear Acceleration and then measuring the linear acceleration of you doing something super sweet.