Road Machine Display for Predictive Paving Progress Mapping
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Solution Overview
Problem
Operators of asphalt finishers face challenges in accurately predicting the progress of laying and leveling work, leading to potential inefficiencies in material mixture usage and project timing.
Innovation Solution
A display unit for road machines equipped with processing circuitry and an information obtaining device, which uses data on road pavement to predict future events and display this information on a road map, enabling more accurate progress forecasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If operators rely on basic display information showing only the amount of material mixture necessary for finishing the unconstructed pavement, then the display system remains simple, but operators cannot accurately predict the progress of laying and leveling work
Solution Approach 1:
The system performs preliminary calculations and predictions of future events (material depletion timing, pavement completion points) based on current operational data before these events actually occur. The processing circuitry computes projected pavement distances and material requirements in advance, allowing operators to prepare accordingly rather than reacting to situations as they arise.
Solution Approach 2:
The display unit acts as an intermediary between the complex operational parameters (material flow rate, pavement speed, remaining material volume) and the operator's decision-making needs. It translates multiple raw data streams into synthesized predictive information such as 'pavement distance until material depletion' and 'estimated completion points,' making the system manageable despite its computational complexity.
2Productivity
If the display shows detailed predictive information about future events, then operators can optimize material usage and timing, but the information processing and display complexity increases
Solution Approach 1:
The system continuously monitors actual operational parameters (material consumption rate, paving speed, distance traveled) and compares them against predicted values. This feedback loop allows the processing circuitry to update predictions in real-time, adjusting for variations in operating conditions while maintaining accurate forecasts of material depletion and completion points.
Solution Approach 2:
The system dynamically adjusts prediction parameters based on changing operational conditions. When the asphalt finisher's speed, material flow rate, or remaining material volume changes, the processing circuitry recalculates predictive parameters such as 'remaining pavement distance' and 'estimated material depletion point' to reflect current conditions, maintaining accuracy without requiring manual intervention.
3Loss of time
If the system predicts future events based on road pavement information, then operators gain advance notice for material ordering, but the risk of inaccurate predictions affecting project timing increases
Solution Approach 1:
The system provides predictions with built-in safety margins by calculating conservative estimates of material depletion points and completion distances. Rather than providing exactly accurate predictions that might be off by small margins, the system errs on the side of caution, suggesting slightly earlier material orders or additional material requirements to ensure project continuity.
Data Source
AI summary
A display unit for a road machine includes a display and processing circuitry. The road machine includes a tractor, a hopper installed in front of the tractor to receive a paving material, a conveyor configured to feed the paving material in the hopper to the back side of the tractor, a screw configured to lay and spread the paving material fed by the conveyor behind the tractor, a screed configured to lay and level the paving material laid and spread by the screw behind the screw, and an information obtaining device configured to obtain information on road pavement. The processing circuitry of the display unit is configured to predict a future event based on the information on the road pavement obtained by the information obtaining device, and to display information on the event on a road map on the display.