UAV Capacitive Sensor Propeller Stoppage
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Solution Overview
Problem
Conventional unmanned aerial vehicles (UAVs) pose a risk of injury and damage when propellers are touched during operation due to their high-speed rotation, and existing propeller guards are cumbersome and inefficient.
Innovation Solution
Integration of capacitive sensors on the exterior surfaces of UAVs that detect human touch, allowing for immediate stoppage of propeller rotation, enabling the use of lighter and more open propeller guards that improve airflow, weight, and noise efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional propeller guards are used to protect against high-speed propellers, then safety is improved, but weight increases and airflow efficiency deteriorates
Solution Approach 1:
The patent replaces the mechanical propeller guard system with an electronic sensing and control system. Capacitive sensors detect human touch near propellers, and electronic controllers automatically stop propeller rotation, eliminating the need for heavy mechanical guards while maintaining safety.
Solution Approach 2:
The patent changes the operational parameters of the propeller system by introducing dynamic control based on sensor input. The propellers transition from continuous high-speed rotation to automatic stoppage when human presence is detected, allowing for lighter protective structures.
2Reliability
If conventional propeller guards are used to protect against high-speed propellers, then safety is improved, but airflow efficiency deteriorates
Solution Approach 1:
The patent replaces the mechanical propeller guard system with an electronic sensing and control system. Capacitive sensors detect human touch near propellers, and electronic controllers automatically stop propeller rotation, eliminating the need for heavy mechanical guards while maintaining safety.
3Reliability
If capacitive sensors are integrated to detect human touch, then safety is improved and propeller guards can be lighter, but device complexity increases
Solution Approach 1:
The capacitive sensors serve multiple functions: they detect human touch for safety purposes and can potentially serve as part of the UAV's user interface system. This multi-functionality reduces overall system complexity by consolidating components.
Solution Approach 2:
The capacitive sensors automatically detect human presence and trigger propeller stoppage without requiring additional processing systems. The sensors and controllers work autonomously to provide safety functionality.
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
Prevents injury and damage by stopping propellers upon human touch while allowing for more efficient and lightweight propeller guards, enhancing UAV performance.
Implementation Method 1
Capacitive sensors are positioned on exterior surfaces of the UAV such as on the main body and on the propeller guards. When human touch on an exterior surface of the UAV is detected...
Data Source
AI summary
Systems, devices, and methods for stopping the rotation of propellers used in unmanned aerial vehicles (UAV) such as drones are disclosed. The propellers are stopped in response to sensing human touch on a surface of the UAV using capacitive sensors.