我如何才能找到只使用加速度计的速度？ [英] How can I find the velocity using accelerometers only?
问题描述
仅使用手机的（安卓）内置加速度计，我怎么会去寻找它的速度？
Using only the phone's (Android) built in accelerometer, how would I go about finding its velocity?
我一直在摆弄这个的数学，但无论功能我拿出容易导致速度呈指数增长。我从在App启动，手机处于静止状态的假设工作。这绝对应该使查找速度（至少粗略地）可能的。
I have been tinkering with the maths of this but whatever function I come up with tends to lead to exponential growth of the velocity. I am working from the assumption that on startup of the App, the phone is at a standstill. This should definitely make finding the velocity (at least roughly) possible.
我在物理学和数学体面的背景了，所以我不应该在这里的任何概念的任何困难。
I have a decent background in physics and math too, so I shouldn't have any difficulty with any concepts here.
我应该怎么办呢？
推荐答案
这真的取决于加速度是多长时间。温和，长的加速可能是可衡量的，但是任何突然增加的加速，接着是恒定的速度，将让你的测量相当困难，而且容易出错。
That will really depend on what the acceleration is and for how long. A mild, long acceleration could be measurable, but any sudden increase in acceleration, followed by a constant velocity, will make your measurements quite difficult and prone to error.
假设恒定的加速度，该公式是非常简单的：A =（V1-V0）/吨。所以，知道时间和加速度，并假设V 0 = 0，则V 1 = A * T
Assuming constant acceleration, the formula is extremely simple: a = (V1-V0)/t . So, knowing the time and the acceleration, and assuming V0 = 0, then V1 = a*t
在一个更真实的世界，你可能不会有一个恒定的加速度，所以你应该计算增量V每次测量，并添加所有这些变化的速度，以获得最终速度。总是认为你不会有一个连续的加速度数据，所以这是最可行的办法（即真实数据VS积分的数学理论）。
In a more real world, you probably won't have a constant acceleration, so you should calculate Delta V for each measurement, and adding all those changes in velocity to get the final velocity. Always consider that you won't have a continuous acceleration data, so this is the most feasible way (i.e, real data vs integral math theory).
在任何方式，即使在最好的情况下，你会最终有一个非常高的误差，所以不推荐这种方法为任何应用程序，真正要看实际速度。
In any way, even in the best scenario, you will end up with a very high error margin, so I do not recommend this approach for any app that truly depends on real velocities.
这篇关于我如何才能找到只使用加速度计的速度？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
