加速度计不同移动设备的陀螺仪精度 [英] Accelerometer & gyro accuracy in different mobile device

问题描述

我想使用移动设备的传感器(加速度计、指南针、陀螺仪).这个问题已经在几个地方讨论过，比如 - here 和 这里

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

第一步是决定哪个平台最适合实施这样的系统.主要的可能性是三星的 Galaxy/Galaxy 标签，或 iphone/ipad.最重要的标准是传感器数据的准确性.但是，这种比较非常复杂，因为准确性不仅取决于设备本身，还取决于其上的软件层.

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.

是否有关于该主题的研究?智能手机的传感器和平板的传感器有区别吗?

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

任何指向网站或文章的链接都会最有帮助

Any links to websites or articles would be most helpful

提前致谢！

爱丽儿

推荐答案

我为 Android 平板电脑开发了同样的东西.当谈到传感器的准确性时，两者之间存在一些巨大差异.最近发布的平板电脑往往有更好的设备.

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.

精度更高，但也努力为给定设备提供来自相同构造函数的传感器.

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

让我解释一下.我使用过 Galaxy Tabs 7.0 和 10.1.GT7 的传感器由各种构造器提供，最终导致与轮询频率相关的差异.如果您有一个来自 X 的加速度计和一个来自 Y 的陀螺仪，两者都以最大频率使用(您确实希望获得更高的精度)，那么这些频率将不匹配.一个可能大约 10 毫秒，另一个大约 15 毫秒.这对于计算来说非常烦人.对于 GT10，所有传感器都是由 InvenSense 在我使用的平板电脑上构建的.InvenSense 为惯性导航创建传感器和软件解决方案(我建议您查看他们的网站和他们的一些论文).不仅它们的准确性很高，而且所有传感器都可以协同工作，尤其是在涉及频率时.

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 - 更喜欢使用最新的设备(可能也是最昂贵的)以获得更好的准确性和传感器之间的足够的幸运.

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

开发带有如此糟糕传感器的 INS 是一件棘手的事情，我可以说，但你可以让它发挥作用.

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

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