Compactor Path Planning for Confined and Unconfined Road Edges
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Solution Overview
Problem
Current road construction equipment systems fail to effectively account for confinement structures and edge types when planning compaction paths, leading to suboptimal compaction and potential issues like hot asphalt mat being displaced or improperly placed.
Innovation Solution
The system includes an interface and processing circuitry that receives position information of road edges, classifies them as confined or unconfined, and generates a path plan to optimize compaction paths, preventing adverse effects such as mat displacement, using image capturing devices and location sensors to adjust the compaction pattern based on edge types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the compactor follows a predetermined linear path without considering edge types, then the path planning is simple, but the compaction quality deteriorates due to mat displacement and improper placement
Solution Approach 1:
The system changes the parameters of the path plan based on detected edge types. When a confined edge is detected, the path is adjusted to maintain a specific distance from the edge; when an unconfined edge is detected, different path parameters are used. This dynamic parameter adjustment resolves the contradiction by adapting the path planning to edge conditions without requiring completely different planning systems.
Solution Approach 2:
The patent replaces manual path planning and mechanical edge detection with an automated system using image capturing devices, location sensors, and processing circuitry. This substitution automates the detection and adaptation process, improving compaction quality without proportionally increasing operational complexity.
2Stability of the object's composition
If the compactor adjusts the path plan based on edge type classification, then the compaction uniformity improves, but the operation time increases due to detection and classification processes
Solution Approach 1:
The system performs preliminary detection and classification of edge types before finalizing the path plan. By detecting edges and classifying them as confined or unconfined in advance, the system prepares the appropriate path parameters beforehand, reducing delays during actual compaction operations and maintaining compaction uniformity.
Solution Approach 2:
The image capturing device and location sensor operate continuously or at regular intervals to detect edge types and adjust the path plan in real-time. This continuous detection and adaptation ensures compaction uniformity without significant interruptions, minimizing time loss while maintaining stable compaction quality.
3Measurement precision
If the system uses image capturing devices and location sensors to detect edge positions, then the edge detection accuracy improves, but the device complexity and cost increase
Solution Approach 1:
The image capturing device and location sensor serve multiple functions: detecting edge positions, determining work area boundaries, identifying confinement structures, and providing data for path planning. This multi-functionality improves measurement precision without proportionally increasing system complexity, as the same hardware components perform multiple detection tasks.
Solution Approach 2:
The patent combines image capturing devices, location sensors, and processing circuitry into an integrated detection and control system. By merging these components into a unified system that processes data together, the overall complexity is managed more efficiently while achieving high edge detection accuracy through the synergistic operation of multiple sensors.
Data Source
AI summary
A compactor can include an interface configured to receive position information of a first side edge and a second side edge opposite the first side edge of a work area of the compactor. The compactor can also include processing circuitry coupled to the interface to receive position information of a first side edge and a second side edge opposite the first side edge of a work area of the compactor. The processing circuitry can generate a path plan for the work machine based on location and classification of the first side edge and the second side edge. The processing circuitry can operate the compactor based on the path plan.