Infrared Roller Path Tracking for Uniform Pavement Compaction
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Solution Overview
Problem
Conventional methods for ensuring uniform compaction of asphalt pavements are prone to errors due to lack of real-time feedback, leading to substandard compaction and increased maintenance costs, while GPS-based intelligent compaction technologies are hindered by high costs and signal disturbances.
Innovation Solution
A thermal-based automatic roller tracking and mapping system using an infrared camera for real-time tracking and mapping, providing accurate roller position estimation and path correction, which is more cost-effective and adaptable to adverse conditions than GPS-based systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based intelligent compaction technology is used, then real-time roller position tracking and compaction quality monitoring are improved, but equipment cost increases and signal reliability deteriorates in adverse conditions
Solution Approach 1:
The patent introduces an infrared camera as an intermediary device that captures thermal images of the roller and pavement, which are then processed through image recognition algorithms to determine roller position and trajectory. This intermediary approach replaces direct GPS signal reliance with an indirect visual-thermal measurement system that is not susceptible to signal blockage or interference.
Solution Approach 2:
The patent substitutes the GPS electromagnetic signal-based positioning system with a thermal imaging and computer vision-based positioning system. The infrared camera detects thermal radiation patterns, and software algorithms process these images to calculate roller position, speed, and trajectory, replacing the mechanical/electromagnetic GPS system with an optical-thermal system that operates independently of satellite signals.
2Ease of operation
If manual rolling pattern following is used, then operation simplicity is maintained, but compaction uniformity deteriorates due to operator errors
Solution Approach 1:
The patent implements a feedback system where the infrared camera continuously captures roller position data, the software processes this data to determine actual trajectory and compaction parameters, and this information is fed back to the operator through a display interface. This closed-loop feedback enables the operator to make real-time adjustments to maintain uniform compaction without requiring complex manual procedures.
Solution Approach 2:
The system performs automatic tracking, calculation, and analysis of roller position and compaction quality without requiring manual measurement or complex operator intervention. The infrared camera and software automatically monitor the rolling pattern, calculate speed and trajectory, and provide objective data that serves the compaction quality control function independently of operator skill or attention.
3Ease of manufacture
If conventional compaction quality control is used, then equipment cost is reduced, but measurement precision of compaction parameters deteriorates
Solution Approach 1:
The patent creates a thermal image copy or representation of the physical roller and pavement system. The infrared camera captures thermal radiation patterns that form a two-dimensional image copy of the rolling process, which can then be analyzed software-based to extract precise measurement data about roller position, speed, and compaction quality without requiring expensive specialized measurement equipment.
Solution Approach 2:
The patent changes the measurement parameter from electromagnetic signal-based GPS coordinates to thermal radiation-based image data. By detecting infrared thermal patterns and processing them through image recognition algorithms, the system extracts precise compaction parameters such as roller position, traveling speed, and trajectory, achieving high measurement precision through a fundamentally different physical parameter (thermal radiation) that is more cost-effective to detect.
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
The system ensures high-quality, uniform compaction by providing accurate real-time feedback, reducing maintenance costs and overcoming limitations of GPS-based technologies, particularly in signal-denied environments.
Implementation Method 1
The tracking and mapping system utilizes an infrared camera for automatic roller path tracking and mapping in pavement construction
Implementation Method 2
accurate roller position estimation and path correction, which is more cost-effective and adaptable to adverse conditions than GPS-based systems
Data Source
AI summary
Disclosed is a thermal-based automatic roller tracking and mapping system for roller path tracking and mapping in pavement compaction. Accuracy in estimation during roller position tracking and mapping for pavement compaction through the use of thermal imaging is achieved. The tracking and mapping system utilizes an infrared camera for automatic roller path tracking and mapping in pavement construction. The tracking and mapping data associated with the movement of the roller vehicle during compaction of the surface can be generated and visually represented in a user interface accessible to the operator of the roller vehicle. Based on the tracking and mapping data that is generated in real-time and presented to the operator in the user interface, the operator can make adjustments to the roller vehicle and path, as necessary.