问题描述
是否可以计算arduino蓝牙屏蔽(BLE Shield 2.1)与手机之间的距离?更具体地说，当手机在护罩的＜5英尺以内时，我希望它执行一个动作.我知道BLE Beacon技术可以在一般意义上(即时，近距离，远距离)做到这一点，所以我想知道是否有可能?
Is it possible to calculate the distance between an arduino bluetooth shield (BLE Shield 2.1) and cell phone? More specifically, when the cell phone is within <5 feet of the shield, I want it to perform an action. I know BLE Beacon technology is able to do this in a general sense (immediate, near, far) so I'm wondering if it is possible?
通过堆栈溢出，我发现了以下答案，但它们都是过时的:
Looking through stack overflow, I've found the following answers but they are all dated:
我知道超声频率和激光瞄准器都是可以选择的，但是我试图将成本保持在较低水平，所以我希望使用一种无需使用其他工具即可计算距离的方法.
I know that ultrasonic frequency and laser sight are both options but I am trying to keep costs low so I would prefer a way in which the distance is calculated without the use of an additional tool.
推荐答案
是的，您可以将其用于基于RSSI(接收信号强度)的距离计算.您应该按照Eirik M Answer中所述在Arduino端实现iBeacon.我认为最重要的是，您必须了解BLE/iBeacon的精度.
Yes you can use it for distance calculation based on RSSI (received signal strength). You should implement iBeacon on Arduino side as stated in Eirik M answer. The most important thing in my opinion is that you have to be aware of BLE/iBeacon precision.
请仔细阅读以下文章，以确定iBeacon技术是否适合您的需求.如果是这样，实施应该是直接的.
Please read carefully the following articles to determine if iBeacon technology fits to your needs. If so, implementation should be straight forward.
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