Retractable UAV Payload Release Tracking for Wind Drift Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing unmanned aerial vehicles (UAVs) face challenges in accurately delivering payloads to ground locations due to wind interference and the inability to adjust descent paths in real time, leading to potential misdelivery.
Innovation Solution
A retractable payload delivery system equipped with a delivery device that secures the payload during descent, uses image tracking to determine its location, and adjusts for deviations from the planned path using imaging systems and thrusters to ensure precise delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UAV delivers payloads using a retractable delivery system, then the delivery reliability is improved, but the device complexity increases due to the need for imaging systems and real-time path adjustment mechanisms
Solution Approach 1:
The patent implements a feedback control system where an imaging system continuously tracks the delivery device's position during descent. The control system receives image data, determines the delivery device's location, and compares it with the planned path. When deviations are detected, the system sends control signals to adjust the delivery device's position, creating a closed-loop feedback mechanism that ensures accurate payload delivery despite wind interference and path deviations.
Solution Approach 2:
The patent replaces traditional mechanical position sensing systems with an optical imaging-based tracking system. Instead of using complex mechanical sensors on the delivery device to sense its position, the system uses an imaging system on the UAV to optically track the delivery device's location and use image coordinate mapping to determine position, thereby reducing mechanical complexity.
2Measurement precision
If the UAV uses image tracking to monitor the delivery device location, then the measurement precision of delivery device position is improved, but the loss of time increases due to real-time image processing requirements
Solution Approach 1:
The patent performs preliminary actions by pre-establishing the mapping relationship between image coordinates and real-world locations before the delivery operation. The system captures image data of the delivery device and immediately processes it to determine position, rather than waiting for the descent to complete. This preliminary position determination allows for real-time path correction without significant time delay.
Solution Approach 2:
The imaging system provides continuous feedback on the delivery device's position during descent. The control system processes image data in real-time, determines deviations from the planned path, and immediately sends correction signals. This continuous feedback loop minimizes the time delay between position measurement and corrective action, ensuring accurate delivery without significant time loss.
3Manufacturing precision
If the delivery device is secured during descent using a retractable system, then the delivery precision is improved, but the device complexity increases due to the retraction system and tether mechanism
Solution Approach 1:
The patent introduces a tether as an intermediary element between the UAV and the delivery device. The tether allows the delivery device to be lowered and secured during descent while maintaining a mechanical connection for control. This intermediary mechanism enables precise delivery by providing both structural support and a means for active control, balancing the need for precision with acceptable system complexity.
Solution Approach 2:
The retractable delivery system provides dynamic control during the delivery process. The system can adjust the tether length and tension in real-time based on the delivery device's position and descent rate. This dynamic adjustment capability allows for precise control of the delivery device's motion while maintaining system simplicity through a single mechanical connection rather than multiple independent control systems.
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
The system enables accurate and reliable delivery of payloads to intended ground locations by compensating for wind interference and path deviations, enhancing the precision of UAV delivery operations.
Implementation Method 1
The location of the delivery device can be determined as it is lowered to the ground using image tracking. The UAV can include an imaging system that captures image data of the suspended delivery device and identifies image coordinates of the delivery device
Implementation Method 2
a field of view of the imaging system includes a light source that is situated on the delivery device and that is arranged to emit light toward the UAV
Data Source
AI summary
An unmanned aerial vehicle (UAV) is disclosed that includes a retractable payload delivery system. The payload delivery system can lower a payload to the ground using a delivery device that secures the payload during descent and releases the payload upon reaching the ground. The location of the delivery device can be determined as it is lowered to the ground using image tracking. The UAV can include an imaging system that captures image data of the suspended delivery device and identifies image coordinates of the delivery device, and the image coordinates can then be mapped to a location. The UAV may also be configured to account for any deviations from a planned path of descent in real time to effect accurate delivery locations of released payloads.