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What are the common positioning techniques for indoor positioning?

Bluetooth positioning: Bluetooth positioning is based on the RSSI (Received Signal Strength Indication) positioning principle. Bluetooth indoor technology is the use of a number of Bluetooth LAN access points installed indoors, to maintain the network into a multi-user based on the basic network connection mode, and to ensure that the Bluetooth LAN access point is always the main device of this micro-micro-network, and then through the measurement of the signal strength to obtain the user's location information. According to the different positioning end, Bluetooth positioning method is divided into network side positioning and terminal side positioning.

UWB Positioning: Ultra-wideband (UWB) positioning technology is a brand new, with the traditional communication positioning technology is very different from the new technology. It utilizes anchor nodes and bridge nodes with known positions arranged in advance to communicate with newly added blind nodes, and utilizes the TDOA positioning algorithm to locate by measuring out the transmission delay difference between different base stations and mobile terminals.

Bluetooth positioning and UWB positioning comparison:

Bluetooth positioning and UWB positioning comparison

First of all, the engineers are most concerned about the positioning accuracy problem: at present, the Bluetooth indoor positioning solution can achieve meter-level positioning accuracy; UWB positioning has been able to achieve centimeter-level high-precision positioning.

Positioning hardware: As the name suggests, the realization of Bluetooth indoor positioning solution is inevitably based on Bluetooth indoor positioning products, the main positioning hardware, including Bluetooth gateway, Bluetooth Beacon, bracelets, watches and other Bluetooth tags, as well as smart phones, wireless LAN and back-end data servers, etc. The UWB positioning hardware products, mainly including the positioning engine servers, intelligent terminal, POE switches, UWB base stations, UWB tags, UWB modules, software interfaces and so on.

Application areas: Bluetooth positioning is mainly used in indoor positioning for people and objects with general positioning accuracy requirements, which is used to obtain the approximate position information of people or objects within a certain spatial range; UWB positioning is mainly used in indoor high-precision positioning, which is used to obtain the precise position information of people or objects within a certain spatial range.

Location environment construction: Bluetooth positioning layout is relatively simple, as long as the attention of the interval range can be, UWB positioning layout compared to Bluetooth positioning is a little more complex, because it involves the installation of UWB base station.

Finally, I will SKYLAB indoor positioning engineers summarize the various fields of indoor positioning solutions to tell you the main points: indoor positioning from the direction of use can be divided into consumer and industrial categories. Consumers mainly realize indoor personnel guidance, consumer push, security monitoring, smart home and other commercial applications. Industrial class mainly realize fire safety, personnel monitoring, equipment guidance, property security, intelligent factory and other applications. Some of them focus on pure indoor positioning, while others focus more on navigation functions, historical tracks, electronic fences and other functions, so they need to be targeted to choose a solution. Simple indoor positioning, navigation, positioning accuracy requirements are not high, you can give priority to Bluetooth positioning solutions, focusing on the history of the track, electronic fences, these features can be prioritized to consider the UWB positioning solutions; I hope to be able to help you have indoor positioning solutions for the needs of customers.