Gps speed limiter.Working principle of GPS Bluetooth positioning technology

　　Bluetooth positioning is based on the principle of RSSI positioning. The full name of RSSI is Received Signal Strength Indication, which is translated as signal field strength indication. Friends who are interested in in-depth research can refer to relevant materials.

　　In the industry, we already know that the development of Bluetooth positioning solutions mainly revolves around two aspects: network side positioning and terminal side positioning, which are divided based on different Bluetooth positioning methods of the positioning end.

　　The Bluetooth network side positioning system consists of terminals (such as wearable Bluetooth devices, Bluetooth wristbands, etc.), Bluetooth beacon nodes, Bluetooth gateways, wireless local area networks, and backend data servers. The specific positioning process is:

　　1) Firstly, install beacons and Bluetooth gateways within the area.

　　2) When the terminal enters the coverage range of the beacon signal, it can sense the broadcast signal of the beacon, and then calculate the RSSI value under a certain beacon. It is transmitted to the backend data server through the Bluetooth gateway via the wifi network, and the specific location of the terminal is calculated through the built-in positioning algorithm of the server. The backend server can send location information to users through the network.

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