Tethered UAV Spraying With Adjustable Cable Tension Control
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Solution Overview
Problem
Conventional aerial spraying apparatuses face instability in flight and spraying operations due to unadjusted cable lengths, leading to potential entanglement with obstacles and inconsistent spraying performance.
Innovation Solution
An aerial spraying apparatus with unmanned aerial vehicles (UAVs) connected by a cable to a ground station, featuring a cable mechanism for adjusting cable length and tension control, ensuring stable flight and operation by providing power, spraying agents, and communication via the cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cable length is fixed and not adjusted, then the system structure is simple, but the cable may become entangled with obstacles or the drone itself during flight, reducing reliability
Solution Approach 1:
The patent applies the dynamics principle by making the cable length adjustable during flight operations. The cable length adjustment mechanism allows the cable to be dynamically extended or retracted based on the drone's position and flight conditions, preventing entanglement while maintaining a relatively simple overall system structure. This dynamic adjustment capability resolves the contradiction between reliability and device complexity.
2Stability of the object's composition
If the cable length is adjusted during flight, then the flight stability and spraying operation are improved, but the device complexity increases due to additional cable mechanism components
Solution Approach 1:
The patent applies the self-service principle by enabling the cable mechanism to automatically adjust cable length based on flight conditions without requiring complex external control systems. The mechanism responds to the drone's movement and position autonomously, maintaining flight stability while minimizing the complexity of control architecture. This self-adjusting capability improves flight stability without proportionally increasing device complexity.
3Stability of the object's composition
If a cable mechanism for length adjustment is added, then the spraying operation stability is improved, but the ease of operation is reduced due to additional control requirements
Solution Approach 1:
The patent applies the feedback principle by implementing a control system that monitors flight conditions and automatically adjusts cable length accordingly. The feedback mechanism ensures the cable remains at the optimal length for stable spraying operations without requiring manual intervention. This automated feedback control improves spraying stability while maintaining ease of operation through minimal user input requirements.
Data Source
AI summary
An aerial spraying apparatus (unmanned aerial vehicle system) includes one or more drones (unmanned aerial vehicles), and a station on the ground that is connected by wire to at least one of the one or more drones. Each of the one or more drones is equipped with a drone side cable connected to the station or another drone, and a drone side cable mechanism that performs paying out or pulling in of the drone side cable.