如何知道最近的 iBeacon

Question

我正在使用 Cordova 制作 ios/android 应用程序。我正在将此插件用于 iBeacon 范围 https://github.com/petermetz/cordova-plugin-ibeacon。它的工作没有问题。 但我对知道最近的信标有疑问。

{
"region": {
    "typeName": "BeaconRegion",
    "identifier": "BeaconTest",
    "uuid": "8deefbb9-f738-4297-8040-96668bb44281"
},
"beacons": [
    {
        "proximity": "ProximityImmediate",
        "tx": -59,
        "rssi": -46,
        "uuid": "8deefbb9-f738-4297-8040-96668bb44281",
        "accuracy": 0.08,
        "minor": 4370,
        "major": 1
    },
    {
        "proximity": "ProximityNear",
        "tx": -59,
        "rssi": -57,
        "uuid": "8deefbb9-f738-4297-8040-96668bb44281",
        "accuracy": 0.71,
        "minor": 4358,
        "major": 1
    }
],
"eventType": "didRangeBeaconsInRegion"

}

在这里我知道哪个是最近的信标。但有时接近值是相同的。如何知道哪个最接近？ rssi 还是什么影响了？

Answer 1

您会在这里找到答案（因为 TX 和 RSSI 概念不是特定于平台的）：

https://community.estimote.com/hc/en-us/articles/201636913-Broadcasting-Power-RSSI-and-Measured-Power-explained

也请看这里： Estimating beacon proximity/distance based on RSSI - Bluetooth LE