Utility Vehicle Distribution Tool With Sensor-Based Layer Control
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Solution Overview
Problem
Existing methods for distributing materials using distribution tools on utility vehicles fail to account for the actual layer structure or surface profile achieved, requiring experienced drivers to manually correct deviations, which is inefficient and labor-intensive.
Innovation Solution
A method utilizing a single sensor device to adjust the lifting position of the distribution tool based on real-time distance measurements from the underlying surface, enabling partially or fully automated control of the layer thickness, guided by a control unit and hydraulic lifting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If position-related control of the lifting position is used, then the distribution process can be automated, but the actual layer structure or surface profile is not taken into account, requiring experienced drivers to manually correct deviations
Solution Approach 1:
The patent implements a feedback mechanism where the control unit receives information about the actual layer structure or surface profile from sensors (such as laser scanners or cameras) and adjusts the lifting position of the distribution tool accordingly. This closed-loop control ensures that the automated process continuously adapts to real-time conditions, maintaining uniform layer structures without requiring manual intervention from experienced drivers.
2Measurement precision
If inspection is performed to control correct distribution, then layer thickness can be monitored, but it is restricted to the immediate vicinity of the utility vehicle and requires experienced drivers
Solution Approach 1:
The patent replaces manual inspection by experienced drivers with automated measurement systems. Sensors such as laser scanners, ultrasonic sensors, or cameras mounted on the utility vehicle automatically measure layer thickness and surface profile, eliminating the need for human operators to visually inspect and manually correct deviations. This substitution of mechanical/manual inspection with automated sensing systems improves both measurement precision and ease of operation.
3Device complexity
If a single sensor device is used to determine distance, then device complexity is reduced, but the system must handle cases where the sensor distance value is less than zero due to material accumulation
Solution Approach 1:
The patent implements dynamic adaptation of the control system based on sensor readings. When the sensor detects a distance value of less than zero (indicating material accumulation behind the distribution tool), the control unit dynamically adjusts its behavior by using alternative estimation methods or modifying the lifting position adjustment algorithm. This dynamic response ensures the system maintains reliability despite using a single sensor device and handling edge cases appropriately.
Data Source
AI summary
A method for assisting a distribution process by a distribution tool attached to a utility vehicle includes adjusting a position of a lower edge of the distribution tool by changing a lifting position of the distribution tool, determining by a sensor attached to the distribution tool a first distance between the lower edge and a surface region of the material being distributed, utilizing the first distance as a basis for adjusting the lifting position when the first distance has a value greater than or equal to zero, estimating a second distance from the lower edge of the distribution tool to the surface region based on the position of the lower edge resulting from the lifting position, and utilizing the second distance for adjusting the lifting position when the first distance has a value of less than zero.