Dump Truck Stop Position Control for Varying Bund Shapes
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Solution Overview
Problem
Existing technologies fail to accurately stop transport vehicles close to bunds in open pit mines due to varying bund shapes and changes, neglecting the need for adaptive positioning based on bund geometry.
Innovation Solution
A dump truck system equipped with a stop position determining module that uses external sensors, such as laser sensors, and a control server to calculate and adjust the stop position based on the bund's shape, ensuring precise alignment with the bund for efficient earth discharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transport vehicle stops as close to the bund as possible, then the earth discharging efficiency is improved, but the risk of discharging transport object outside the bund increases when bund shape varies
Solution Approach 1:
The stop position determining module dynamically calculates the optimal stop position based on real-time detection of bund shape and geometry. The system adapts the stop position coordinates (Xs, Ys) according to the actual bund configuration, allowing the vehicle to stop as close as safely possible to maximize discharging efficiency while maintaining reliability through continuous positional adjustment.
Solution Approach 2:
The system uses external sensors to detect bund shape and provides feedback to the stop position determining module. This feedback loop enables the system to continuously refine the stop position calculation, ensuring the vehicle stops at the optimal location that balances proximity to the bund with accurate positioning to prevent overflow.
2Device complexity
If a fixed stop position is used, then the device complexity is reduced, but the adaptability to varying bund shapes deteriorates
Solution Approach 1:
The stop position determining module automatically calculates and determines the optimal stop position based on sensor-detected bund characteristics. The system performs self-service by autonomously processing the bund shape data and generating stop position coordinates without requiring manual intervention or complex pre-programming for each bund configuration.
Solution Approach 2:
The system changes the stop position parameters (Xs, Ys) based on detected bund shape parameters. By dynamically adjusting these coordinates according to the actual bund geometry, the system achieves high adaptability to varying bund shapes while maintaining relatively simple device architecture through parameter-based control rather than structural complexity.
3Ease of operation
If the stop position is determined without considering bund shape, then the ease of operation is improved, but the manufacturing precision of stop position deteriorates
Solution Approach 1:
The system replaces manual determination of stop position with an automated calculation system that uses external sensor data. The stop position determining module substitutes complex manual measurement and judgment with algorithmic processing of sensor inputs, maintaining ease of operation while achieving high precision in stop position determination through computational methods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the dump truck to stop close to the bund, adapting to shape changes, ensuring effective earth discharging operations and maintaining vehicle alignment with the bund, even when bund shapes vary or change.
Implementation Method 1
uses external sensors, such as laser sensors
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
To make a transport vehicle stop close to a bund in dependence on the shape of the bund. A stop position determining device for a transport vehicle includes: a bund identification module (520) that identifies the shape of a bund (400) provided on a traveling surface based on information from an external sensor (231) provided on the transport vehicle; and a target stop position calculation module (530) that calculates a target stop position (SP) for the transport vehicle based on the shape of the bund identified by the bund identification module.