Wireless beacon positioning system and positioning method thereof

Abstract

The invention provides a wireless beacon positioning system and a positioning method thereof, and belongs to the technical field of the internet of things. The system comprises a wireless beacon, an identification card and a positioning substation, wherein the wireless beacon and the positioning substation are paired and grouped by adopting an on-demand distribution way, and only the wireless beacon and the positioning substation in the same group can perform data communication; the wireless beacon performs time synchronization by adopting a dynamic on-demand time service principle, and the problem that the wireless beacon still can realize the on-demand group dynamic time service under the condition that the battery power supply is dormant as required is solved, through the emission fieldintensity, the attenuation coefficient on-demand configuration, signal intensity threshold filtering and like technology, the flexible requirements on the positioning precision on-demand deployment at the petrochemical, chemical engineering and like job fields are satisfies, the low cost and high-precision positioning effect is realized.

Description

Technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a wireless beacon positioning system and a positioning method thereof. Background technique [0002] A positioning system using multiple technologies such as RFID, ZigBee, Wi-Fi, UWB, Bluetooth, etc. The basic architecture is a fixed deployment of card reading substations, where personnel carry identification cards, and the card reading substations receive information from the identification cards carried by personnel. According to its field strength, phase, identification card serial code and other information for identification and positioning. [0003] The above positioning algorithms all require the clocks of the nodes in the network to be synchronized. However, different nodes have their own local clocks. Due to the deviation of the crystal oscillation frequency of different nodes, it is difficult to keep the frequency of multiple crystal oscillators consistent. The...

AI Technical Summary

Problems solved by technology

[0010] However, the above methods all need to periodically send positioning information to mobile nodes or personnel positioning portable terminals in a wireless manner

Therefore, both of them have the following problems: due to the difference in the characteristics of the node crystal oscillators, even if the clock frequency and counting period between the nodes are set to the same value, the period of each node cannot be guaranteed to be equal

In fact, in petrochemical, chemical and other work sites, if the signal of any beacon is not good, it will lead to principled errors such as "cannot pass through devices\equipment\walls, and do not distinguish between inside and outside"

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