Android Altbeacon库测距仅在30%的时间内检测到信标
我正在使用AltBeacon库对设备附近的信标进行测距。我使用的是库的所有默认值,即1100ms的扫描周期和0ms的扫描周期 库每1100ms调用一次我的侦听器,但问题是在很多调用中,没有信标检测。信标只检测到约30%-40%的呼叫,其余70%的呼叫表示周围没有信标 我能做些什么来解决这个问题Android Altbeacon库测距仅在30%的时间内检测到信标,android,ibeacon,altbeacon,Android,Ibeacon,Altbeacon,我正在使用AltBeacon库对设备附近的信标进行测距。我使用的是库的所有默认值,即1100ms的扫描周期和0ms的扫描周期 库每1100ms调用一次我的侦听器,但问题是在很多调用中,没有信标检测。信标只检测到约30%-40%的呼叫,其余70%的呼叫表示周围没有信标 我能做些什么来解决这个问题 关于编辑:在看到日志摘录后,我提交了第二个答案 我想到了两种可能性: 尝试在Android设备上禁用WiFi的情况下重复此测试。一些Android设备结合了WiFi/Bluetooth组件,在同时使用时会
关于编辑:在看到日志摘录后,我提交了第二个答案 我想到了两种可能性:
在查看了一个非常大的50秒LogCat摘录(私下发送)后,我发现有两个信标以不规则的间隔被检测到:
Beacon #1 7383942b-xxxx-xxxx-xxxx-xxxxxxxxxxxx id2: 5 id3: 5000
Max time between detections: 5.75600001 s
Mean time between detections: 2.03854544 s
% range cycles with detection: 51%
Beacon #2 b9407f30-xxxx-xxxx-xxxx-xxxxxxxxxxxx id2: 60039 id3: 2279
Max time between detections: 4.794999515 s
Mean time between detections: 1.377583336 s
% range cycles with detection: 82 %
库代码按预期每1100毫秒启动和停止一次蓝牙扫描,在89%的测距周期中,至少检测到两个信标中的一个。这表明应用程序、库和操作系统都工作正常——没有明显的时间段不检测到信标。更重要的是,每个信标的RSSI表明一个相当强的信号,在记录期间相当一致。但是信标的检测间隔非常不规则。这是不寻常的
这表明某些无线电或硬件问题,无论是信标、电话还是无线电环境。有几种可能性:
public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
if (beacons.size() > 0) {
EditText editText = (EditText)RangingActivity.this
.findViewById(R.id.rangingText);
int rssi = -100;
for (Beacon beacon: beacons) {
logToDisplay("Beacon "+beacon.toString()+" is about "+beacon.getDistance()+" meters away, with Rssi: "+beacon.getRssi());
if (beacon.getId1().toString().equals("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6") && beacon.getId2().toString().equals("1") && beacon.getId3().toString().equals("1")) {
rssi = beacon.getRssi();
}
}
if (rssi > -100) {
Log.d(TAG, "Beacon found in ranging cycle. rssi: "+rssi);
}
else {
Log.d(TAG, "Beacon not found in ranging cycle");
}
}
}
你用的是什么类型的信标?它的传输频率是多少?如果信标每三秒发射一次,这就是你希望看到的。我目前正在使用Estimote信标。信标的默认广告时间间隔为950毫秒。我已将其更改为5亿秒,但我遇到了相同的问题。我也试过使用RECO信标。你能发布设置测距的代码吗?您在测试中使用的是哪种Android设备型号?我正在用如下内容实例化BeaconManager:
mBeaconManager=BeaconManager.getInstanceForApplication(appContext);mBeaconManager.getBeaconParsers().add(新建BeaconParser().setBeaconLayout(“m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24”);mBeaconManager.bind(这个);mBackgroundPowerSaver=新的BackgroundPowerSaver(aaapplicationcontext);mBeaconManager.setBackgroundScanPeriod(背景扫描期);mBeaconManager.Setbackground在扫描周期之间(背景在扫描周期之间)代码>然后我开始这样做:mBeaconManager.startrangbeaconregion(region)代码>之后,我在我的侦听器的didRangeBeanConsincin区域
中接收事件。我每秒收到一个调用,但在很多调用中,作为参数传递的集合是空的1。是的,我所有的测试都是在没有wifi的情况下完成的,因为我过去在这方面有问题。2.我已经安装了安卓定位应用程序,如果我输入一个信标的详细信息,我会看到很多“未检测到”,我会在几秒钟内看到它。这正常吗?对于我的iOS版本的应用程序,这不会发生,一切正常。很抱歉,您遇到了问题。您是否可以从应用程序中捕获一些日志输出?要从库中获取调试级别日志输出,请添加一行代码,如:beaconManager.setDebug(true)代码>然后在间歇性信标检测期间捕获LogCat输出——最好一分钟或更长时间。日志摘录将很长,请将其发送到support@radiusnetworks.com. 我会回顾和总结我在这个论坛的回复中看到的任何问题,不会发布任何标识符或其他私人信息。好的,大卫,我已经发送了。谢谢!;)嗨,大卫,你收到日志了吗?非常感谢你的深入分析。我一直在和我的技术团队评估所有的可能性,我们怀疑这可能是3种可能性中的任何一种。我团队的一位成员,已经与您的库一起对beacons数据进行了非常深入的分析,并希望与您讨论这个问题。他有很多图表可以向你展示,来描述他对这个问题的理论。我能让他和你联系吗?我们对使用AltBeacon非常感兴趣,但我们必须解决我们的问题:)谢谢您的帮助
$ adb logcat -v time | grep "ranging cycle"
10-07 15:17:00.076 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:01.180 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -73
10-07 15:17:02.287 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -75
10-07 15:17:03.422 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:04.545 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:05.714 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:06.815 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:07.989 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -65
10-07 15:17:09.087 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -72
10-07 15:17:10.198 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -65
10-07 15:17:11.322 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -71
10-07 15:17:12.484 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:13.587 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -64
10-07 15:17:14.758 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:15.867 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:16.998 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:18.195 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:19.280 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:20.415 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:21.560 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:22.659 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:23.802 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:25.035 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -66
10-07 15:17:26.189 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:27.331 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -73
10-07 15:17:28.458 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:29.618 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -67
10-07 15:17:30.756 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -84
10-07 15:17:31.886 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -76
10-07 15:17:33.047 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -76
10-07 15:17:34.193 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -85
10-07 15:17:35.339 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -83
10-07 15:17:36.502 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -90
10-07 15:17:37.683 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -78
10-07 15:17:38.871 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -87
10-07 15:17:40.079 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -90
10-07 15:17:41.234 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -85
10-07 15:17:42.422 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -87
10-07 15:17:43.588 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -88
10-07 15:17:44.751 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -88
10-07 15:17:45.924 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -86
10-07 15:17:47.114 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -83
10-07 15:17:48.264 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -82
10-07 15:17:49.409 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -82
10-07 15:17:50.612 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -88
10-07 15:17:51.781 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -79
10-07 15:17:52.913 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -79
10-07 15:17:54.122 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -82
10-07 15:17:55.296 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -84
10-07 15:17:56.441 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -89
10-07 15:17:57.631 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -75
10-07 15:17:58.782 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -63
10-07 15:17:59.924 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -71
10-07 15:18:01.098 D/RangingActivity(16630): Beacon found in ranging cycle. rssi: -72