加速度计和放大器;陀螺仪的精度在不同的移动设备 [英] Accelerometer & gyro accuracy in different mobile device

问题描述

欲实现使用移动设备的传感器的室内定位系统（加速度计，罗盘， 陀螺仪）。已经在这里讨论了几个地方，如这个问题 - <一个href="http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation">here和<一href="http://stackoverflow.com/questions/5314217/gyro-accelerometer-magnetometer-and-kalman-filter">here

I want to implement an indoor localisation system using the sensors of a mobile device (accelerometer, compass, gyro) . This problem was already discussed here on several places such as - here and here

的第一个步骤是决定哪些平台是最好的一个来实现这样的系统。 主要的可能性是三星的Galaxy / Galaxy Tab的，或者iPhone / iPad的。 最重要的标准是在传感器的数据的准确性。但是，这种比较是很复杂的，因为准确度不仅取决于设备本身而且还取决于它上面的软件层。

The first step is to decide which platform is the best one to implement such a system. The main possibilities are Samsung's Galaxy/ Galaxy tab, or the iphone/ ipad. The most important criteria is the accuracy of the sensors data. However, This comparison is very complicated, as the accuracy is dependent not only on the device itself but also on the software layers above it.

有没有研究提供关于这个问题的？ 有没有智能手机的传感器和这些药片？之间的差异

Is there any research available on the subject? Is there a difference between the sensors of smartphones and those of tablets?

到网站或文章的所有链接将最有益

Any links to websites or articles would be most helpful

在此先感谢！

阿里尔

推荐答案

我developped同样的事情对于Android平板电脑。当涉及到传感器的准确度，有一个又一个的一些巨大的差异。最近公布的片往往有更好的装备。

I've developped the very same thing for Android tablets. When it comes to accuracy of the sensors, there are some huge differences between one and another. Recently released tablets tend to have better equipment.

在其准确性更好，也可作为有为了提供从相同的构造传感器给出的设备。

Better in their accuracy, but also as there is an effort to provide sensors from the same constructor for given devices.

让我来解释一下。我已经与银河标签7.0和10.1的工作。 GT7的传感器是由不同的构造，它结束了在与轮询频率差距所提供。如果你有从x加速度计和Y向陀螺仪，无论是使用在他们的最大频率（其中你想更好的precision），这些频率不匹配。其中一个可能是大约10毫秒，15左右的另一这就是pretty的恼人计算。对于GT10，所有的传感器都在我使用的平板电脑打造由InvenSense公司。 InvenSense公司的惯性导航（我建议你检查自己的网站和他们的一些论文）创建的传感器和软件解决方案。不仅其准确性是伟大的，但所有的传感器将共同努力，特别是当它涉及到频率。

Let me explain. I've worked with Galaxy Tabs 7.0 and 10.1. GT7's sensors are provided by various constructors, which ends up in disparities related to polling frequencies. If you have an accelerometer from X and a gyroscope from Y, both being used at their largest frequency (which you do want for better precision), those frequencies won't match. One might be around 10 ms, the other around 15. And that's pretty annoying for calculations. For the GT10, all of the sensors are build by InvenSense on the tablet I used. InvenSense creates sensors and software solutions for inertial navigation (I recommend you to check their website and some of their papers). Not only their accuracy is great, but all of the sensors will work together, and especially when it comes to frequencies.

TL; DR - $使用最新的设备（也可能是最昂贵的）传感器之间更好的精度和幸运adequation p ​​$ PFER

TL;DR - Prefer using the latest equipment (and probably the most expensive) for better accuracy and luckily adequation between sensors.

这样糟糕的传感器发展的INS是一件棘手的事情，我可以说，但你可以把它的工作。

Developing an INS with such bad sensors is a tricky thing I can tell, but you can make it work.

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