找出路由器和接收器之间的距离? [英] Finding out distance between router and receiver?

问题描述

一个普遍的问题:是否有可能检索有关多远的信息，例如一台计算机来自wifi路由器.例如，如果我距家庭无线热点10米或2米，我想在计算机上获取数据.

A general question: is it possible to retrieve information about how far away e.g. a computer is from a wifi-router. For instance I want to get data on my computer if I'm 10 meters away from my home-wifispot or 2 meters.

有没有可能吗?

蓝牙怎么样?是否有可能获得有关蓝牙连接的设备之间的距离的信息?

How about bluetooth? Is it possible to get information about how far away bluetooth-connected devices are one from another?

推荐答案

我会推荐一条测量线或只是老式的猜测.

I would recommend a measuring line or just good-old-fashioned guesstimating.

没有简单"的方法可以做到这一点(复杂的方法可能涉及提前构建准确的"信号图，或者试图拟合一个更好的方程式，而该方程式仍然受到天真的规则的诸多限制).经验法则"1/r ^ 2"就是这样-一般经验法则.另一方面，也许有一些现有的软件可以告诉您您的RSS强度，让您感到完成任务:-)

There is no "simple" way to do it (complex ways may involve building "accurate" signal maps ahead of time or trying to fit a better equation which is still subject to anumber of the limitations with the naive rule) and the rule of thumb "1/r^2" is just that -- a general rule of thumb. On the other hand, perhaps there is some existing software that will show you your RSS strength and make the task feel accomplished :-)

如果您用Google搜索"RSS信号距离"，则会找到有用的链接.这种任务在学术界看来是很普遍的话题.小型无线设备("motes")，并且有一些有趣的方法可以解决此问题，例如安装辅助低频声学传感器.

You will find useful links if you google for "RSS signal distance". This kind of task seems quite a common topic in academia w.r.t. small wireless devices ("motes") as well and there have been some interesting approaches to this problem such as the fitting of secondary low-frequency acoustic sensors.

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