Mobile Drift Sensor Positioning for Field Overspray Detection
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Solution Overview
Problem
Current overspray detection systems for agricultural sprayers are costly and cumbersome, requiring fixed sensing apparatus that must be installed and moved when field boundaries change, and struggle to detect the extent of overspray beyond field boundaries, especially for substances too small to be observed visually.
Innovation Solution
A mobile overspray detection system using unmanned aerial vehicles (UAVs) that sense wind speed and direction to position themselves in monitor areas likely to experience overspray, generating control signals to detect and quantify overspray conditions, and adjust the sprayer's operation to prevent further drift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed sensing apparatus is used to detect overspray, then detection reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent transitions from fixed sensing apparatus to mobile sensing devices that can dynamically reposition themselves. The mobile sensor carries sensors and repositions to different locations along the field boundary based on detected conditions, providing reliable overspray detection without requiring complex fixed installation infrastructure at multiple locations.
Solution Approach 2:
The mobile sensor performs self-positioning and self-monitoring functions. It autonomously navigates to detect wind conditions, identifies likely overspray areas, and repositions itself to monitor those areas, reducing the need for external control systems and complex fixed apparatus while maintaining detection reliability.
2Reliability
If fixed sensing apparatus is installed at each field boundary, then overspray detection coverage is improved, but ease of operation deteriorates when field boundaries change
Solution Approach 1:
The mobile sensor dynamically adapts to changing field boundaries by repositioning itself. When field boundaries change, the mobile sensor can autonomously navigate to new boundary locations and continue monitoring, eliminating the need to physically relocate fixed sensing apparatus and maintaining comprehensive coverage.
Solution Approach 2:
The mobile sensor serves multiple field boundaries and locations with a single device. It can monitor different segments of the field boundary at different times, providing universal overspray detection coverage across varying field configurations without requiring dedicated fixed sensors at each boundary.
3Ease of operation
If mobile sensor is used, then ease of operation and adaptability are improved, but measurement precision may deteriorate
Solution Approach 1:
The mobile sensor continuously monitors wind speed and direction, using this feedback to identify likely overspray conditions and reposition itself to appropriate monitoring locations. This feedback loop ensures the mobile sensor maintains optimal positioning for precise detection despite its mobility, adapting to changing environmental conditions in real-time.
Solution Approach 2:
The mobile sensor performs preliminary detection of wind conditions and identifies likely overspray areas before repositioning to monitor those specific areas. This preliminary action ensures that when the sensor arrives at its monitoring position, it is already targeted at the correct location for precise overspray detection, maintaining measurement precision.
Data Source
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AI summary
Wind speed, wind direction, and field boundary information are detected and used to identify a monitor area indicative of a likely overspray condition. Control signals are generated to obtain information from a sprayed substance sensor, in the monitor area. When an overspray condition is detected, an overspraying signal from the sprayed substance sensor indicating the detected overspray condition is received and overspray processing is performed, based upon the received overspray signal.