UAV Continuous Jet Delivery for Low-Drift Liquid Dosing
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Solution Overview
Problem
Existing methods for applying insecticides and repellents using unmanned aerial vehicles face challenges such as environmental pollution, drift of droplets, excessive load on plants, and inefficiency in delivering small doses to moving objects, particularly fruit trees and animals, due to the limitations of spraying systems and standard nozzles.
Innovation Solution
A method and system for delivering liquid using a controlled ejection of continuous jets from unmanned aerial vehicles, which includes obtaining information about processing sites, determining application areas, and delivering liquid via controlled ejections of continuous jets while maintaining the vehicle, using image sensors and navigation systems to ensure precise targeting and minimize environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If spraying liquid mixtures is used to apply pesticides and insecticides, then coverage area is improved, but environmental pollution and drift of droplets increase
Solution Approach 1:
The continuous liquid jet is segmented into discrete giant droplets through controlled ejection, where each droplet is delivered independently to the target. This segmentation allows precise dosing while minimizing drift, as each droplet follows a controlled trajectory rather than forming an aerosol cloud that disperses with wind
Solution Approach 2:
The patent replaces the conventional aerosol spray mechanism with a mechanical jet ejection system. Instead of using pressurized nozzles to create fine mist, the system uses controlled ejection to deliver laminar continuous jets that break into giant droplets, substituting mechanical precision for aerosol dispersion
2Object-affected harmful factors
If small doses of pesticides are applied to meet eco-friendly requirements, then environmental friendliness is improved, but application precision and delivery accuracy deteriorate
Solution Approach 1:
The patent changes the critical parameter from droplet size (aerosol) to jet velocity and ejection timing. By controlling the velocity and timing of continuous jet ejection, the system achieves precise dosing of small amounts of liquid while maintaining application accuracy, as the jet trajectory can be precisely controlled and predicted
3Ease of operation
If standard spraying nozzles are used to deliver liquid, then ease of operation is improved, but delivery accuracy and dosing precision deteriorate
Solution Approach 1:
The system transitions from static nozzle spraying to dynamic jet ejection. The ejection mechanism can adjust velocity, timing, and direction of the liquid jet in real-time, allowing precise control of dosing while maintaining operational simplicity through automated control systems that manage the complexity
4Reliability
If aerial spraying is performed from high altitude, then safety and operator protection are improved, but application accuracy and environmental contamination increase
Solution Approach 1:
The patent substitutes aerosol spray delivery with directed jet ejection, where liquid is delivered in focused streams rather than dispersed clouds. This mechanical precision in delivery allows high-altitude operation while minimizing environmental contamination, as the jets maintain their trajectory and break into droplets only at or near the target
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 targeted and efficient delivery of small doses of liquid agents to objects like fruit trees and animals, reducing environmental pollution and improving application accuracy by using laminar continuous jets that break into giant droplets, minimizing drift and ensuring precise application without environmental contamination.
Implementation Method 1
the jet is reaching the object for application in the form of a continuous liquid jet or in the form of giant droplets, formed during the break-up process of the continuous jet
Implementation Method 2
a strong downward air flow created by the propellers of vehicle itself
Data Source
AI summary
The invention is intended for organizing the process of targeted delivery of small doses of liquid chemical treatment agents from unmanned aerial vehicles, for example, in precision agriculture or animal husbandry. Delivery of the required dose of liquid chemical treatment agents to the required application area by series of one or more targeted ejections of a continuous, and optimally laminar, jet from the unmanned aerial vehicle in flight, according to the method and/or delivery system according to the invention, is performed without significant deflection of the liquid and its losses outside the application area compared to known methods and spraying devices, and, therefore, more environmentally friendly and economical; and the application system has a minimal negative impact on the application areas and ensures the motion of unmanned aerial vehicles along optimal and safe routes.