Intelligent switching method of uwb positioning system in two-dimensional and three-dimensional positioning scenes

Abstract

The invention belongs to the technical field of UWB positioning. The invention specifically relates to an intelligent switching method for positioning base stations required by a UWB positioning system in two-dimensional and three-dimensional positioning scenes. The method comprises the following steps: S1, giving different positioning base station receiving signal angles [theta]i, j (i = 1, 2, 3,and the like, N, j = 1, 2, 3, and the like, M) to different positioning base stations according to positioning node receiving angles, N being the number of layers where the positioning base stationsare located, and M being the number of the base stations; and S2, initially setting a two-dimensional positioning scene, and judging that the positioning tag is located between the several layers of base stations according to positive and negative conditions of [theta]i, j values. The required positioning base station is intelligently switched by using the positive and negative value change of thesignal receiving angle of the positioning tag and the positioning base station, so that the link of the positioning tag, which is irrelevant to the current positioning, is reduced, the utilization rate of the base station is optimized, and the average power consumption of the whole positioning system is reduced.

Description

technical field [0001] The invention belongs to the technical field of UWB positioning, and in particular relates to an intelligent switching method of a UWB positioning system in two-dimensional and three-dimensional positioning scenes. Background technique [0002] With the increasingly large and complex living space of people, indoor positioning technology and location-based services are also developing, and there are more and more positioning base stations installed in various locations and positioning tags attached to objects and human bodies. Most of these positioning tags transmit positioning raw data with the positioning base station in real time, and then transmit it to the background for processing. UWB (ultra-wideband signal) has an extremely wide signal bandwidth, which makes it have unique advantages in the penetration ability of non-metallic obstacles, anti-multipath ability and anti-interference ability, so it is widely used in indoor precise positioning. [...

AI Technical Summary

Problems solved by technology

In the prior art, the three-dimensional base station layout and positioning algorithm are directly used to meet the positioning requirements. This method has relatively large defects. One is to waste the battery capacity resource in the positioning hardware node, which increases the cost, and the other is to increase unnecessary background processing consumption; at the same time, the positioning tag directly communicates with the positioning base station within a certain space range, and then performs positioning calculation, which increases the system function. consumption

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