Radar Swath Sensing for Dust-Robust Agricultural Collection
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Solution Overview
Problem
Existing agricultural vehicle systems struggle to accurately determine swath properties such as area, volume, moisture, and density, especially in environments with obscurants like dust, which affects efficient swath collection and can lead to inefficiencies and damage from foreign objects.
Innovation Solution
A radar-sensor system that generates directional radar-data capable of penetrating obscurants, allowing for the determination of swath properties like area, volume, moisture, and density, and providing vehicle-control instructions for improved operation, including foreign object detection and avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical sensors are used to detect swath properties, then measurement capability is provided, but measurement precision deteriorates in the presence of obscurants like dust
Solution Approach 1:
The patent replaces optical sensing systems with radar-based electromagnetic sensing. Radar waves operate at different frequencies that can penetrate dust and obscurants, substituting the optical detection mechanism with a radar-based measurement system that is immune to particulate interference in the atmosphere.
Solution Approach 2:
The invention changes the fundamental parameter of detection from optical wavelengths to radar wavelengths. By operating in the microwave/radar frequency range rather than the visible or near-infrared spectrum, the system achieves penetration through obscurants that block optical signals, fundamentally altering the detection paradigm.
2Reliability
If foreign object detection is implemented, then damage prevention is improved, but device complexity increases
Solution Approach 1:
The radar system performs multiple functions simultaneously: it measures swath properties (area, volume, shape) and detects foreign objects within the swath. A single radar sensor and processing system handles both tasks, eliminating the need for separate detection systems and reducing overall device complexity despite the multiple functions performed.
Solution Approach 2:
The radar system uses its own transmitted signal reflections to both characterize the swath and identify foreign objects. The same electromagnetic waves that map the swath geometry also reflect off foreign objects, allowing the system to serve multiple detection purposes through self-analysis of the returned signal characteristics.
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
Enhances the accuracy and reliability of swath collection by providing better representation of swath properties and enabling autonomous vehicle control, reducing waste and damage from foreign objects, even in challenging environmental conditions.
Implementation Method 1
A radar-sensor may be provided that is configured to generate radar-data that is representative of the swath
Implementation Method 2
process the radar-data in order to determine: (i) swath-profile-data, which is representative of the location of the outer-surface of the swath
Data Source
AI summary
A system comprising a radar-sensor (210) configured to acquire radar-data (212) representative of swath (104) in an agricultural field (102); and a controller (214) configured to determine swath-property-data (216) based on the radar-data (212).