Cross Member Tracking for GNSS-Guided Vehicle Unloading
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Solution Overview
Problem
Existing agricultural and construction vehicles face challenges in efficiently loading material into receiving vehicles while avoiding cross members or hoops, leading to material spillage and damage, due to environmental conditions that hinder accurate image processing for vehicle positioning.
Innovation Solution
A calibration system that determines the offset between receiving vehicle parameters and a reference point on the following vehicle, using GNSS and dynamic modeling to track vehicle positions without real-time image processing, ensuring precise unloading operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time image processing is used to locate receiving vehicle cross members, then positioning accuracy can be achieved, but environmental obscurants (dust, smoke, poor lighting) cause measurement failures and material spillage
Solution Approach 1:
The patent replaces optical/image processing systems with a mechanical/electronic solution using GNSS receivers and onboard computer systems to track vehicle positions. The leading vehicle's computer receives GNSS data from both vehicles, calculates cross member location based on relative positioning, and controls the unloading spout accordingly, eliminating dependence on visual conditions
Solution Approach 2:
The patent introduces GNSS satellite signals as an intermediary medium for position detection. Instead of directly imaging the receiving vehicle and its cross members, the system uses satellite-based positioning data as an intermediate reference frame to indirectly determine cross member location and adjust the unloading trajectory
2Measurement precision
If manual control of unloading spout position is used, then the operator can monitor conditions, but the operator's attention is diverted from harvesting operations reducing overall productivity
Solution Approach 1:
The system enables the unloading operation to control itself automatically. The leading vehicle's computer system autonomously receives GNSS positioning data, calculates the receiving vehicle's position and cross member location, determines the optimal unloading trajectory, and controls the spout positioning without human intervention, allowing the operator to focus on harvesting
Solution Approach 2:
The system implements continuous feedback control by constantly monitoring the relative positions of both vehicles through GNSS receivers, calculating cross member location in real-time, and adjusting the unloading spout position based on this feedback to maintain accurate material delivery
3Loss of substance
If automated unloading control with cross member tracking is implemented, then material spillage is reduced, but system complexity increases
Solution Approach 1:
The patent makes the leading vehicle's computer system multi-functional by having it perform both harvesting control functions and unloading control functions. The same computer receives GNSS data, calculates positions, determines cross member location, and controls the spout, eliminating the need for separate dedicated control hardware and reducing overall system complexity
Solution Approach 2:
The system merges the positioning functions for both vehicles into a single integrated control architecture. The leading vehicle's computer receives and processes GNSS data from both vehicles, combines this information to calculate relative positioning and cross member location, and uses this merged information to control the unloading operation
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
Enables accurate and efficient unloading by avoiding cross members, reducing spillage and damage, and maintaining optimal fill strategies despite environmental obscurants.
Implementation Method 1
using GNSS and dynamic modeling to track vehicle positions
Data Source
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AI summary
A cross member on a receiving vehicle which is coupled to a following vehicle, is located relative to a leading vehicle. The location of the cross member is tracked during an unloading operation so the leading vehicle avoids the cross member when unloading material into the receiving vehicle.