Method for positioning large-size workshop with high precision

Abstract

The invention relates to a method for positioning large-size workshop with high precision with an aim to effectively solve the problem about efficient, convenient and accurate positioning of the large-size workshop. The method includes that a round LED lamp is laid at the top of the workshop, wherein at the top of the workshop, a target point with digital coding information is arranged according to the spacing of no more than 5m and the density of a grid; at least four round LED lamp targets are captured in each photo, and overlap degree of the adjacent photos is 85%; the photos are subjectedto image processing matching with a computer to obtain three-dimensional coordinates of a target point; positioning equipment is calibrated, positional relationship between a camera on the positioningequipment and a positioning point is calculated, the positioning point of the positioning equipment terminal is calculated, and positioning is completed; the method has the advantages of independentpositioning, free from outside interference, high positioning precision, free of distance restriction in propagation, low energy consumption, large coverage, free of affection by ambient light and lowscenario requirements.

Description

technical field [0001] The invention relates to building positioning, in particular to a high-precision positioning method for a large-scale factory building. Background technique [0002] Since the emergence of positioning technology represented by GPS, its high efficiency, convenience, speed and accuracy have brought about tremendous changes in people's lives and led to the rapid development of a number of applications and services. However, due to technical limitations of traditional positioning technology , the positioning effect in the indoor environment is not ideal or cannot be positioned. Therefore, the current indoor environment urgently needs an efficient, convenient and accurate positioning technology to fill the gap. The current positioning technology mainly relies on three methods: proximity information, scene analysis and geometric positioning. As far as the scope of application is concerned, the influence of positioning technology extends to various fields in...

AI Technical Summary

Problems solved by technology

The distance measurement accuracy in the range of 50m can reach 15cm, the accuracy in the range of 100m can reach 30cm, the three-dimensional positioning accuracy of the mesh multi-antenna can reach 10cm, and the accuracy drops significantly when encountering obstacles (such as walls)

Key issues: extremely high requirements for time synchronization and expensive equipment; serious multipath effects make it difficult to perform high-precision positioning

[0013] From the above, it can be seen that the above-mentioned positioning technologies have problems of one kind or another to varying degrees, and cannot meet the actual needs of high-precision positioning of large-scale factories. Therefore, its improvement and innovation are imperative

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