UAV Takeoff Pad Overload Lockout for Stable Delivery Flights
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face difficulties in maintaining safe flight when the weight of the article to be delivered exceeds the vehicle's capacity, leading to potential loss of control due to wind disturbances and necessitating regulatory restrictions on overload conditions.
Innovation Solution
A takeoff and landing device equipped with a weight acquisition unit and a controller that determines if the UAV is overloaded, using a fixing device or a control signal transmission unit to prevent takeoff, ensuring the UAV does not fly in an overloaded state by physically restricting takeoff or disabling flight signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the load weight is increased to deliver larger articles, then the delivery capability is improved, but the flight stability deteriorates due to wind disturbances and control loss
Solution Approach 1:
The system performs preliminary weight measurement of the article before the UAV takes off. The weight acquisition unit measures the article weight on the takeoff pad, and the controller determines whether it exceeds the maximum load capacity before flight initiation, preventing unstable flights in advance
Solution Approach 2:
The system implements feedback control by continuously monitoring the article weight through the weight acquisition unit and comparing it with the maximum load capacity stored in the controller. Based on this feedback, the controller automatically determines whether to permit or prohibit takeoff, ensuring flight stability
2Reliability
If the maximum load capacity is restricted to maintain flight safety, then the flight stability is improved, but the delivery capability deteriorates
Solution Approach 1:
The system dynamically adjusts the takeoff permission state based on real-time weight measurements. The controller switches between a first state (prohibiting takeoff) when weight exceeds capacity and a second state (permitting takeoff) when weight is within limits, optimizing both safety and delivery capability flexibly
3Reliability
If a weight measurement system is added to determine overload conditions, then the flight safety is improved, but the device complexity increases
Solution Approach 1:
The takeoff pad serves a dual function: it is both the physical platform for UAV takeoff/landing and the measurement platform for weight acquisition. The weight acquisition unit utilizes the existing takeoff pad structure to measure article weight, eliminating the need for separate measurement infrastructure and reducing system complexity
Solution Approach 2:
The system merges the weight measurement function with the existing takeoff pad and controller. The controller integrates both the maximum load capacity storage and the takeoff permission control functions, combining multiple functions into existing components to minimize additional complexity
Data Source
AI summary
A takeoff and landing device, includes: a fixing devices or a communication unit configured to be able to switch between a first state that is a state of preventing the unmanned aerial vehicle from taking off from the takeoff and landing device and a second state that is a state of not preventing taking off; a weight acquisition unit configured to acquire weight of the article that the unmanned aerial vehicle delivers; and a takeoff controller or a takeoff controller configured to switch a state of the fixing devices or the communication unit to the first state or the second state on the basis of the weight of the article acquired by the weight acquisition unit and of a reference value for determining whether it is an overload.