iBeacon is a very precise micro-positioning technology developed by Apple through low-power Bluetooth technology. Through this technology, the device can receive a certain range of signals sent by other iBeacons, and can also pass your information to other users within a certain range. All devices equipped with Bluetooth version and iOS7 can be used as transmitters and receivers for iBeacons technology.
iBeacons is Apple's 2013 WWDC launching a Bluetooth-based (Bluetooth LE | BLE | Bluetooth Smart)-based precision micro-positioning technology. When your handheld device is close to a Beacon base station, the device can sense the Beacon signal. A few millimeters to 50 meters. Compared with the original Bluetooth technology, iBeacons has several characteristics: First, it does not need to be paired. Apple has strict control over Bluetooth devices before, so only Bluetooth devices that have passed MFI authentication can connect with iDevice, and Bluetooth does not have these restrictions. Accurate and distance. Ordinary Bluetooth (before Bluetooth) generally has a transmission distance of 0.1~10m, while the iBeacons signal can be accurate to the millimeter level and can support up to 50m range; the power consumption is lower. In fact, Bluetooth is also called low-power Bluetooth. An ordinary button battery can be used by a Beacon base station hardware for two years.
Summarizing iBeacons in one sentence is that the technology is like an indoor GPS. The iPhone can receive iBeacons transmissions and obtain various accurate positioning information. For example, when you drive to an underground parking lot, go shopping after parking. After returning, the iPhone app can guide you to the exact location of your locomotive. Positioning is only part of the iBeacons technology, and iBeacons also allows your phone to send a simple "I am here" signal, which means iBeacons technology can do more.
In order to test whether the iBeacon application of Apple's mobile phone can really achieve accurate indoor positioning function, let's do a simple experiment for everyone.
First, the mobile phone should be equipped with the Bluetooth BLE software in the App store. AirLocate is the iBeacon test software launched by Apple. Locate iBeacons is a third-party software that can realize the distance positioning and calibration of iBeacon. Let's take a look at Locate. Distance display and indoor positioning achieved by iBeacons.
[1] Install Locate iBeacons on your mobile phone. Your iphone is at least 4s or above. The system must be ios7.0 or higher. The system after iphone4s ios7.0 supports Bluetooth BLE.
[2] Click on Locate iB and enter as shown below.
[3] Click Locate iBeacons to enter the following interface. If your base station is already open, you can see the device as shown in the figure. The following figure shows the distance between your mobile phone and the iBeacon base station. This distance may be Different hardware devices vary, so calibration is required. Please see how to calibrate in the next step. Here, why does the software display the distance display? The main reason is that the UUID released by Apple is added by default in the software. We can also modify the uuid of the base station, and then add the uuid to the software. Functional, this is going to be developed in depth.
[4] Calibration, click on the first line and go to the next step.
[5] Calibration tips, put your iphone about 1 meter away from the iBeacon base station, press Calibrate, and keep it for 30 seconds to 1 minute. The process is as shown below.
[6] After the calibration is completed, the following figure shows that the focus calibration is complete. You can take your iphone everywhere. The magic iBeacon will tell you the distance you are. If more than 3 iBeacon base station signals can be received, Then you can achieve a more realistic indoor positioning.
[7] The display distance is as follows.
[8] At the end, iBeacon's simple application on ios is like this. In fact, there are a lot of novel technologies in it. Apple is now promoting iBeacon, which is Bluetooth BLE indoor positioning technology. There are too many places available for this thing. Parking location, library positioning, supermarkets, playgrounds, airport seats, entrances, football World Cup stadiums, etc. can be used, you can't think of Apple, but also for mobile payments, this is also Apple Why the company's mobile phones have never used NFC. At present, the US has installed iBeacon base stations in Apple stores and many amusement parks, and many app developers have already targeted this unimaginable cake. We will wait and see.
[9] In addition, we know that Apple's AirLocate is open source, Apple's sample code released on WWDC2013, but the Locate iBeacons used in this article is not open source, but can be downloaded for free from the App store for free, I also have the hand Modify the good source code, but did not publish on the App store, after all, it is a hassle to release it, we still give iBeacon base station performance is the best priority. Later, I will send out more iBeacon related tutorials, and pay attention to the updates of my csdn blog. Let us witness the growth of iBeacon.
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