Drone Collision Avoidance Thresholds Based on Propeller Guards
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Solution Overview
Problem
Conventional aerial robotic vehicles (UAVs) use a fixed proximity threshold for collision avoidance, which may not be suitable for all circumstances, particularly when propeller guards are installed or not, leading to reduced maneuverability and safety concerns.
Innovation Solution
The system determines whether propeller guards are installed on an aerial robotic vehicle and adjusts the proximity threshold for collision avoidance accordingly, using sensors such as contact, weight, image, or radio-frequency identification tag readers to set a higher or lower threshold based on the presence and condition of the propeller guards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed proximity threshold is used for collision avoidance, then the obstacle avoidance system can prevent collisions with objects, but the drone's maneuverability is reduced when propeller guards are installed
Solution Approach 1:
The proximity threshold is changed from a fixed value to a dynamically adjustable parameter based on the presence of propeller guards. The system automatically detects whether propeller guards are installed and adjusts the threshold accordingly, allowing the drone to maintain optimal maneuverability while ensuring collision avoidance safety.
Solution Approach 2:
The system changes the proximity threshold parameter based on the configuration state (with or without propeller guards). When propeller guards are detected, a lower threshold is applied; when they are absent, a higher threshold is used, optimizing both safety and maneuverability for each operational state.
2Reliability
If a higher proximity threshold is used to ensure safety when propeller guards are not installed, then collision avoidance is improved, but the drone cannot operate effectively when propeller guards are installed
Solution Approach 1:
The proximity threshold dynamically adapts to the operational configuration. The system detects propeller guard presence and switches between two threshold modes: a higher threshold for safety when guards are absent, and a lower threshold for operational effectiveness when guards are present.
Solution Approach 2:
The proximity threshold parameter is adjusted based on the detected configuration state. The system maintains a higher threshold value to ensure safety when propeller guards are not installed, and switches to a lower threshold value when propeller guards are installed, optimizing operational effectiveness.
3Adaptability or versatility
If a lower proximity threshold is used to improve maneuverability when propeller guards are installed, then the drone can operate more effectively, but safety is compromised when propeller guards are not installed
Solution Approach 1:
The system dynamically adjusts the proximity threshold based on real-time detection of propeller guard presence. When guards are detected, a lower threshold enables better maneuverability; when guards are absent, the threshold increases to maintain safety.
Solution Approach 2:
The proximity threshold parameter changes based on the operational configuration. A lower threshold value is applied when propeller guards are installed to improve maneuverability, while a higher threshold value is used when guards are not installed to ensure safety.
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2
AI summary
Various embodiments include methods, devices, and aerial robotic vehicles for adjusting a proximity threshold implemented in a collision avoidance system based on whether propeller guards are installed. Methods may include an aerial robotic vehicle processor determining whether a propeller guard is installed, setting, a proximity threshold for collision avoidance based on the determination as to whether propeller guard(s) is/are installed on the aerial robotic vehicle, and controlling one or more motors of the aerial robotic vehicle using the proximity threshold for collision avoidance. When propeller guards are installed, the proximity threshold may be set at a smaller distance than when propeller guards are not installed. The determination of whether a propeller guard is installed may be based on sensor data from one or more sensors configured to detect or indicate the presence of a propeller guard, and/or based on rotor revolution rates determined from a motor or motor controller.