Substation scene mapping and positioning optimization method based on laser and vision fusion

Abstract

The invention discloses a transformer substation scene mapping and positioning optimization method based on laser and vision fusion, and the method comprises the steps: firstly obtaining a single-line laser radar, an inertial sensor IMU, an odometer and binocular image data, and carrying out the preprocessing; then carrying out local positioning and mapping, and constructing a sub-map; when laser thread positioning and mapping are carried out, binocular image processing, namely a visual thread, is synchronously carried out, feature point tracking is realized, and a key frame is judged; carrying out target detection on the obtained key frame; and finally, generating semantic landmarks and projecting the semantic landmarks to the sub-maps. And optimizing the sub-map, and carrying out global optimization. According to the method, the advantages of a positioning algorithm based on graph optimization and deep learning are combined, the complete navigation map capable of being stably positioned can be obtained, the feature matching time is greatly shortened, the positioning stability under the complex operation and maintenance scene of the transformer substation is greatly improved, and the navigation under the scene of the transformer substation is quicker and more reliable.

Description

technical field [0001] The invention relates to the field of SLAM in the complex scene of fusion of laser and vision, and is aimed at efficient and stable mapping and positioning in the complex environment of the substation. Background technique [0002] With the development of my country's economy and the improvement of people's living standards, social electricity consumption is also increasing, and the power industry has developed rapidly. Substation, transmission, distribution and other power system links are very important links in the power grid. Therefore, the substation urgently needs advanced on-site operation and maintenance technology. This puts forward higher requirements for the construction of substations, and the intelligent transformation of substations has become a hot issue. [0003] Substation equipment inspection is an important method to ensure the normal operation of substations. At present, most substations manually identify the type and model of sub...

AI Technical Summary

Problems solved by technology

A visual fusion SLAM scheme based on single-line laser radar is proposed. The invention solves the problem that single-line laser radar cannot perceive three-dimensional obstacles and laser penetration, and is optimized for the actual complex scene of the substation

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