Question

我想用ipad的蓝牙模拟多个ibeacon信号，是否可能

Answer 1

您无法同时进行多次传输，但您可以通过使用计时器在两个或更多个发射器之间切换来模拟此情况。当作为iBeacon进行传输时，iOS设备通常每秒发送10个广告包。但接收者只希望每秒至少接收一次数据包以进行正常操作。

尝试设置定时器在两个iBeacon发射器之间来回切换（关闭一个然后打开另一个）。像这样：

    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        // Override point for customization after application launch.
        NSLog(@"We are going to simulate advertising multiple iBeacons simultaneously!");
        CLBeaconRegion *iBeacon1 = [[CLBeaconRegion alloc] initWithProximityUUID:[[NSUUID alloc] initWithUUIDString:@"2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6"]  major:15555 minor:35001 identifier:@"iBeacon1"];
        CLBeaconRegion *iBeacon2 = [[CLBeaconRegion alloc] initWithProximityUUID:[[NSUUID alloc] initWithUUIDString:@"2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6"]  major:15555 minor:35002 identifier:@"iBeacon2"];

        iBeacons = [[NSMutableArray alloc] init];
        [iBeacons addObject: iBeacon1];
        [iBeacons addObject: iBeacon2];
        measuredPower = [NSNumber numberWithInt:-59];
        currentIBeaconNumber = 0;
        self.peripheralManager = [[CBPeripheralManager alloc] initWithDelegate:self queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)];
        [self rotateAdvertising];
        return YES;
    }

    - (void) configureAdvertisingForIBeaconNumber: (int) iBeaconNumber {
        if(self.peripheralManager.state!=CBCentralManagerStatePoweredOn) {
            NSLog(@"Core Bluetooth is off");
            return;
        }
        [self.peripheralManager stopAdvertising];
        NSLog(@"Transmitting as iBeacon number %d", currentIBeaconNumber);
        NSDictionary *peripheralData;
        peripheralData = [[iBeacons objectAtIndex:iBeaconNumber] peripheralDataWithMeasuredPower:measuredPower];
        [self.peripheralManager startAdvertising:peripheralData];
    }

    - (void) rotateAdvertising {
        [self configureAdvertisingForIBeaconNumber:currentIBeaconNumber];
        currentIBeaconNumber = (currentIBeaconNumber + 1) % iBeacons.count;
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW,  1000* NSEC_PER_MSEC), dispatch_get_main_queue(),                ^{
            [self rotateAdvertising];
        });
    }

我测试了这个并且它可以工作 - 第二个iOS设备包括两个iBeacons。

如果我尝试每秒多次在两个标识符之间切换，则接收iOS设备会定期丢失其中一个信标。因为此代码每秒仅切换一次，所以当接收器不接收两个iBeacon传输中的一个时，接收器将具有稍微超过一秒的间隙。这可能会或可能不会对接收器侧的测距/监测造成一些意外的副作用。但是你可以尝试看看。

我可以只从一个蓝牙广播多个ibeacon信号吗？如何

1 个答案: