Local updating system and method for high-precision map of strip mine

By employing multi-source heterogeneous data acquisition, intelligent change detection, and incremental 3D reconstruction, the problem of long update cycles for high-precision maps in open-pit mines has been solved. This enables high-frequency, low-bandwidth, high-precision map updates, meeting the safety and production needs of unmanned mining trucks, reducing computation and transmission costs, and improving production efficiency and safety.

CN121958291APending Publication Date: 2026-05-01CHINA NO 15 METALLURGICAL CONSTR GRP
0 Cites 0 Cited by

Patent Information

Application Number
CN202610155692.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-04
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing technologies cannot effectively solve the problem of mismatch between the timeliness of high-precision maps and the continuous production rhythm of mines in open-pit mines. This results in long update cycles, high consumption of computing resources, high data transmission bandwidth, low production matching degree, and serious redundant updates, which affect the safe operation and production efficiency of unmanned mining trucks.

Method used

The system employs a multi-source heterogeneous data acquisition module to acquire multi-source real-scene 3D data of the open-pit mine working face at high frequency. Combined with an intelligent change detection and region extraction module, it automatically identifies and extracts areas of rapid terrain change. The system then uses an incremental 3D reconstruction and update module to reconstruct local real-scene 3D models. Finally, it utilizes a spatiotemporal database and version management module for hierarchical storage and version management. Finally, it uses a visual interaction and verification platform for verification and error statistics to achieve high-precision and efficient updates.

Benefits of technology

It enables high-frequency, low-bandwidth, high-precision local map updates, shortens the update cycle to the process level, reduces computing and transmission costs, improves stitching accuracy and change detection reliability, meets the safety requirements of unmanned mining trucks, reduces manual surveying costs, and ensures the continuity and safety of production.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a local updating system and method for a high-precision map of a strip mine, and the system comprises six modules: a multi-source data collection module, an intelligent change detection module, an incremental three-dimensional reconstruction module, a space-time database management module, a visual verification module and a mining and stripping amount measurement module. PointNet + + and U-Net networks are fused to realize change region extraction with the precision less than or equal to 1m, only local reconstruction is carried out on the change region, centimeter-level seamless fusion is realized by adopting graph optimization and Laplacian grid deformation, and updating is completed in a short time. The model supports version second-level rollback, WebGL30FPS rendering and TIN method automatic amount calculation, the error is less than 1.2%, the bandwidth is saved by 90%, the GPU occupation is reduced by 75%, the requirement of an unmanned mine card for the current trend less than or equal to 30 minutes under the pace of daily propulsion of a strip mine is met, mining while updating is realized, and a real-time data base is provided for intelligent scheduling and digital twin mines.
Need to check novelty before this filing date? Find Prior Art