Mining Machine Navigation Correction via Landmark Deviation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mining machines tend to deviate from their intended paths in mines due to navigation errors, especially when GPS is unavailable, as the position correction using landmarks can be inaccurate if those landmarks are moved, leading to potential deviations from the traveling path.
Innovation Solution
A mining machine management system equipped with a detection unit for non-contact landmark positioning, an own position detection device, and a processing unit that corrects the machine's position using pre-registered landmark positions, excluding those with significant deviations to prevent path deviation, and updates registration positions as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If navigation is used to reckon position and azimuth by obtaining traveling distance using speed sensor or moving distance sensor, then the mining machine can travel automatically, but the error of the reckoned position becomes larger as the traveling distance becomes larger
Solution Approach 1:
The system uses gyro sensors to continuously monitor azimuth and speed sensors to monitor traveling distance, providing feedback to detect deviations from the predetermined traveling path. When deviations are detected, the system generates travel restriction instructions to correct the path, thereby maintaining position accuracy over long distances.
Solution Approach 2:
The invention introduces a management server as an intermediary between the mining machine and the traveling path control system. The server stores predetermined traveling paths, receives detection results from multiple mining machines, and generates travel restriction instructions based on detected deviations, coordinating path maintenance across the entire system.
2Reliability
If position correction using landmarks is implemented when GPS is unavailable, then the mining machine can continue traveling, but the mining machine may deviate from the traveling path if the landmark position has changed
Solution Approach 1:
The system pre-stores the positions of multiple landmarks in the management server before travel begins. During travel, the server compares the predetermined landmark positions with actual detection results to identify moved landmarks before they cause significant path deviations, allowing proactive correction of the traveling path.
Solution Approach 2:
When landmark position changes are detected, the system dynamically updates the predetermined traveling path parameters to account for the moved landmarks. The management server recalculates optimal paths that avoid areas affected by landmark displacement, adapting the navigation parameters in real-time to maintain accuracy.
3Productivity
If multiple mining machines travel simultaneously using shared landmark references, then resource utilization is improved, but position deviations may propagate across multiple machines
Solution Approach 1:
The management server acts as a central intermediary that independently verifies landmark positions for each mining machine. When one machine detects a moved landmark, the server validates this information and communicates the position change to other machines, ensuring all machines have consistent and accurate landmark reference data without direct machine-to-machine error propagation.
Solution Approach 2:
The system implements a feedback mechanism where each mining machine reports its detected landmark positions to the management server, which then compares these reports with predetermined positions and with reports from other machines. This cross-validation feedback loop identifies and corrects position deviations before they affect multiple machines simultaneously.
Data Source
AI summary
A mining machine management system includes a detection unit mounted on a mining machine that travels in a mine in which a plurality of landmarks is installed, and configured to detect a position of the landmark with respect to the mining machine in a non-contact manner, an own position detection device mounted on the mining machine, and configured to obtain an own position of the mining machine, a storage unit configured to store positions of the plurality of landmarks, the positions having been obtained in advance, as registration positions, and a processing unit configured to obtain the position of the landmark detected by the detection unit from a detection result of the detection unit and the own position, and read the registration position corresponding to the landmark from the storage unit and obtain position deviation between the registration position and the position of the landmark.