UAV Low-Power Landing Control Using Ground Hazard Detection
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face safety risks when their battery power is severely low, leading to potential crashes and explosions due to loss of control during landing, especially in unknown ground conditions.
Innovation Solution
A UAV severe low-power protection method that acquires ground environment information, obtains landing safety judgment, and controls the flight state to achieve a safe landing by hovering and deviating from unsafe areas, using sensors and a flight controller to assess and manage the landing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UAV forcibly descends when battery power is lower than landing required power, then the UAV can land on the ground, but the pilot loses control and the UAV may fall into water, on trees, or on road causing explosion or injury accident
Solution Approach 1:
The system performs preliminary detection of ground environment information (water, trees, roads, pedestrians) before the forced descent occurs. By提前 identifying dangerous areas and marking them as no-fly zones, the system ensures that when the pilot loses control and forced descent happens, the UAV automatically avoids these pre-identified hazards, thus maintaining landing safety without requiring continuous pilot input.
Solution Approach 2:
The system continuously monitors battery power levels and ground environment conditions, providing real-time feedback to the flight controller. When the battery power drops below the threshold required for safe landing, the system activates the protective mechanism that uses previously detected ground environment data to guide the forced descent, ensuring the UAV lands in safe areas while maintaining pilot control through automated safety interventions.
2Ease of operation
If the UAV continues normal flight operations with low battery power, then the pilot maintains full control, but the UAV may not have sufficient power to complete landing, resulting in crash or explosion
Solution Approach 1:
The system performs preliminary detection and assessment of ground environment conditions before the battery is completely depleted. By identifying safe and dangerous landing areas in advance and storing this information in the flight controller, the system prepares a contingency plan that can be executed immediately when power becomes insufficient, ensuring landing success without interrupting normal flight operations.
Solution Approach 2:
The system takes preliminary anti-action by pre-identifying dangerous areas (water, trees, roads with pedestrians) and creating a restricted zone map before the crisis occurs. This preliminary protective measure counteracts the potential harmful outcome of forced descent by having the avoidance strategy ready in advance, thus preventing crashes or explosions while allowing the UAV to continue normal operations until power depletion becomes inevitable.
Data Source
AI summary
Embodiments of the present invention are an unmanned aerial vehicle (UAV) severe low-power protection method and a UAV. The method includes: first acquiring ground environment information when the UAV is in a severe low-power protection state, and then obtaining landing safety judgment information according to the ground environment information, and further controlling a flight state of the UAV according to the landing safety judgment information to realize a safe landing of the UAV. The foregoing method reduces the probability of explosion of the UAV, avoids injury accidents, and improves flight safety when the UAV is in a severe low-power state.