Automated Raised Pavement Marker Placement With Speed-Based Timing
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Solution Overview
Problem
Current methods for placing raised pavement markers on roads are labor-intensive, inefficient, and prone to human error, leading to inconsistencies in spacing and alignment, which can compromise their effectiveness and safety.
Innovation Solution
A system that automates the placement of raised pavement markers using a melter to apply a melted attachment substance, a ribbon gun to dispense it on the road, and a marker placement device, controlled by sensors and processors to ensure precise timing and spacing based on vehicle speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual measurement, spacing, placement, and attachment of raised pavement markers is used, then flexibility and adaptability are maintained, but labor intensity increases and placement consistency deteriorates
Solution Approach 1:
The system uses sensors to automatically detect road surface conditions and marker placement locations, eliminating the need for manual measurement and spacing. The automated placement device then positions markers consistently without human intervention, resolving the contradiction between placement precision and operational ease.
Solution Approach 2:
The patent replaces manual mechanical operations with an automated system that uses sensors for detection, processors for decision-making, and an automated placement mechanism. This substitution maintains flexibility through programmable control while eliminating manual labor and improving placement consistency.
2Productivity
If automated marker placement system is implemented, then productivity increases and labor requirements decrease, but device complexity increases
Solution Approach 1:
The automated placement device integrates multiple functions into a single system: sensors detect road conditions and marker locations, processors calculate optimal placement positions, and the placement mechanism applies markers consistently. This multi-functionality increases productivity while consolidating complexity into an integrated automated system.
Solution Approach 2:
The system introduces sensors and processors as intermediaries between the operator and the marker placement process. These intermediaries automatically handle measurement, calculation, and positioning tasks, improving productivity while managing complexity through modular sensor-processing-actuation architecture.
3Manufacturing precision
If manual spacing and alignment methods are used, then equipment simplicity is maintained, but marker spacing consistency deteriorates
Solution Approach 1:
The system uses sensors to continuously monitor road surface conditions and marker placement positions, providing feedback to the processor. The processor adjusts subsequent marker placements based on this feedback, ensuring consistent spacing and alignment. This closed-loop control achieves precision while managing equipment complexity through intelligent control algorithms.
Solution Approach 2:
The patent replaces manual spacing measurements and alignment procedures with an automated sensor-based system. The sensors detect road features and calculate precise marker positions, eliminating the need for complex manual measurement equipment while achieving superior spacing consistency through electronic control.
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 consistent and accurate placement of markers without manual intervention, reducing labor, increasing efficiency, and enhancing road safety by maintaining consistent marker spacing and alignment.
Implementation Method 1
a melter to melt an attachment substance, such as bituminous
Implementation Method 2
a thermoplastic ribbon gun equipped with a heating element to maintain the attachment substance at a specific temperature for application
Data Source
AI summary
A system for automated pavement marker placement is disclosed, comprising a gun for applying a melted attachment substance onto a road surface, and a marker placement device for positioning a pavement marker onto the substance. The system includes one or more sensors to measure the speed of the gun and marker placement device, and processors to determine activation times for the gun and marker placement device based on speed and distance parameters. The described system addresses the technical problem of precise marker placement at varying speeds, providing a solution that ensures accurate alignment and adhesion of markers. The system is primarily used in road construction and maintenance, enhancing efficiency and accuracy in marker application. The processors dynamically adjust activation times in response to speed changes, optimizing the process for consistent results.