Road Paver Remote Control and Automated Leveling
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Solution Overview
Problem
Current road pavers require operators to be confined to a control station, limiting their view and mobility, and often necessitate two people for initial leveling, leading to communication challenges and inefficient operation, especially in complex environments.
Innovation Solution
A road paver with a centralized, automated leveling system controlled by a process computer, allowing operators to input data wirelessly from multiple locations and featuring sensors and electrically controlled steering for improved maneuverability and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator sits in the driver's seat to access controls and dashboard, then control access is enabled, but the operator's radius of action and overview of the road surface is very limited
Solution Approach 1:
The control system is segmented into multiple access points: traditional controls in the driver's seat and additional wireless controls that can be positioned anywhere around the paver. This allows the operator to access controls from multiple locations rather than being confined to a single position.
Solution Approach 2:
A wireless communication system acts as an intermediary between the operator and the paver controls. This mediator enables control signals to be transmitted without physical connection, allowing the operator to move freely while maintaining control capability.
2Productivity
If two people are used for initial leveling, then leveling can be performed, but communication difficulties and misunderstandings occur in the loud noise environment
Solution Approach 1:
The leveling system performs self-measurement and self-correction using sensors that automatically detect grade and alignment conditions. The system communicates findings directly to the operator via display or wireless device, eliminating the need for a second person to verbally instruct adjustments in noisy environments.
Solution Approach 2:
Manual visual inspection and verbal communication are replaced with electronic sensors and digital communication systems. The sensors automatically measure leveling parameters and transmit data electronically, replacing the mechanical/verbal communication chain that was prone to misunderstandings.
3Ease of operation
If manual entry of operating parameters is required, then parameter input is possible, but operation becomes time-consuming and prone to errors
Solution Approach 1:
The system automatically captures operating parameters through integrated sensors that measure grade, alignment, and other conditions. These parameters are automatically entered into the control system without manual input, eliminating time-consuming manual data entry and reducing errors.
Solution Approach 2:
Manual parameter entry is replaced with automatic sensor-based data capture. Electronic sensors continuously monitor and feed parameter data to the control system, replacing the manual writing or typing process with automated electronic measurement and transmission.
4Ease of operation
If servo-hydraulic steering system is used, then direct wheel control is achieved, but remote control of the steering system is difficult to implement
Solution Approach 1:
A wireless communication system serves as an intermediary between the operator and the servo-hydraulic steering system. This allows control commands to be transmitted wirelessly to the hydraulic system, enabling remote control while maintaining the precision of direct hydraulic actuation.
Solution Approach 2:
The steering control system is designed to accept multiple input methods: traditional wired controls in the driver's seat, wireless handheld controls, and potentially automated control inputs. This multi-functionality allows the same hydraulic system to be controlled from various positions and methods.
Data Source
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AI summary
Road pavers (10) are used to produce road surfaces made of asphalt and other road construction materials. These road pavers (10) are self-propelled. They are equipped with a chassis (12), which can be either tracked or wheeled. Road pavers (10) have an operator's station (19) containing a driver's seat (20). To operate the road paver (10), the operator must be seated in the driver's seat (19) because this is the only place where they have access to the controls or the dashboard (21). Because the operator is confined to the driver's seat (20), their range of motion and their view of the road surface being paved are very limited. Before commissioning, the road paver (10) must be leveled. Currently, leveling is done by two people, which is very costly and presents various difficulties.Road pavers (10), in particular wheeled pavers, are usually equipped with a servo-hydraulic steering system. The steering characteristics of the wheeled paver are limited by such a servo-hydraulic steering system. The application now provides a road paver (10) in which the operation, in particular the control, is designed to be comfortable and simple.