UAV Sound Determination Feature for Noise Compliance
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) generating sounds that exceed regulatory or user-preferred sound levels during delivery, leading to noise pollution and potential disruptions.
Innovation Solution
Implementing a sound determination feature that uses sensors to capture and analyze sound data, generating sound maps to identify sound power levels and pressure levels at various distances, and adjusting propeller configurations or landing marker locations to adhere to sound regulations and preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UAV delivers item to delivery location, then delivery service is provided, but sound levels exceed regulatory or user-preferred limits causing noise pollution
Solution Approach 1:
The patent implements dynamic propeller modulation where the UAV controller adjusts propeller rotational speeds in real-time based on measured sound levels. The system transitions from static propeller operation to dynamic control, continuously adjusting motor speeds to maintain sound levels within regulatory limits while preserving delivery functionality. This is achieved through feedback loops that monitor sound metrics and automatically modulate propeller RPM accordingly.
Solution Approach 2:
The patent changes operational parameters by adjusting propeller rotational speeds and motor power outputs based on measured sound levels. The system modifies physical parameters (RPM, thrust, noise) to resolve the contradiction between delivering items and maintaining acceptable noise levels. By varying these parameters dynamically during flight, the system achieves both delivery objectives and noise compliance.
2Productivity
If UAV uses standard propeller configuration for delivery, then delivery efficiency is maintained, but sound levels exceed user-preferred limits
Solution Approach 1:
The patent implements a feedback mechanism where sound level measurements from sensors are continuously fed back to the UAV controller. The controller uses this feedback information to adjust propeller speeds in real-time, creating a closed-loop control system. This feedback loop enables the system to maintain delivery efficiency while automatically reducing sound levels to user-preferred limits through continuous monitoring and adjustment.
Solution Approach 2:
The system performs preliminary sound level measurements and predictions before actual delivery operations begin. By pre-calculating sound metrics based on propeller configurations and environmental factors, the system can pre-adjust operational parameters to ensure sound levels remain within preferred limits during the actual delivery, avoiding noise complaints while maintaining efficiency.
3Speed
If UAV operates at high speed for quick delivery, then delivery time is reduced, but sound power levels increase exceeding regulations
Solution Approach 1:
The patent implements dynamic adjustment of propeller speeds based on real-time sound level measurements. Rather than operating at fixed high speeds, the system dynamically modulates propeller RPM to maintain optimal delivery speed while keeping sound power levels within regulatory limits. This dynamic control allows the UAV to achieve quick delivery without excessive noise by adjusting speeds based on actual operating conditions and measured sound metrics.
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
Effectively reduces noise pollution by dynamically modifying UAV sound levels and landing marker positions, ensuring compliance with sound regulations and user preferences during delivery operations.
Implementation Method 1
obtain sound information about the sound generated by the UAV during flight
Data Source
AI summary
Techniques for calculating a sound received at a plurality of distances from an unmanned aerial vehicle (UAV) may be provided. For example, during delivery, the UAV may be associated with a sensor to obtain first sound information that corresponds to the sound generated by the UAV. A sensor associated with a landing marker may obtain second sound information about the sound generated by the UAV during flight and delivery of a payload to a location associated with the landing marker. In embodiments, the first sound information and the second sound information may be utilized to calculate sound metrics for the sound generated by the UAV and determine the sound received at a plurality of distances from the UAV during flight.