A method for high-precision positioning of large-scale workshops

Abstract

The invention relates to a method for high-precision positioning of a large-scale factory building, which can effectively solve the problem of high-efficiency, convenient and accurate high-precision positioning of a large-size factory building. A target point of 5m and a target point with digitally coded information are arranged in a grid density; each photo has at least 4 circular LED light target points, and the overlapping degree of adjacent photos is 85%; the photos taken are imaged by a computer Process the matching to obtain the three-dimensional coordinates of the target point; calibrate the positioning device to calculate the positional relationship between the camera on the positioning device and the positioning point, and use the industrial camera on the positioning device to capture the target point of the LED light to calculate the position and attitude of the camera. At the same time, the positioning point of the positioning device terminal is calculated to complete the positioning. The invention locates independently, is free from external interference, has high positioning accuracy, is not restricted by distance, has low power consumption, large coverage, is not affected by ambient light, and has low scene 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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