Rotor Wing Optical Comb Sensing for Accurate UAV Movement Prediction
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Solution Overview
Problem
Existing methods for predicting the movement of flying objects, such as small unmanned aerial vehicles, lack accuracy and efficiency.
Innovation Solution
A movement prediction apparatus utilizing a first and second light output device to generate optical frequency combs with different intervals, combined with a light reception device to measure distances to rotor wings and calculate rotational speeds, enabling precise prediction of object movement based on changes in distance and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional image data processing methods are used to predict movement, then the system is simple to implement, but the prediction accuracy is insufficient for effective control
Solution Approach 1:
The patent replaces conventional image data processing methods with optical frequency comb-based distance measurement. This substitution enables direct measurement of rotor wing position and rotation speed through optical means, achieving high-accuracy movement prediction without relying on complex image analysis algorithms and processing systems.
Solution Approach 2:
The patent introduces optical frequency combs as an intermediary mechanism between the measurement system and the flying object. By using optical frequency combs to measure distance and rotor wing rotation, the system achieves accurate movement prediction without directly analyzing complex visual data, thus improving precision while managing system complexity.
2Measurement precision
If optical frequency comb-based distance measurement is used, then movement prediction accuracy improves, but the device complexity increases
Solution Approach 1:
The patent employs optical frequency combs that serve multiple functions: they enable precise distance measurement, detect rotor wing rotation speed, and provide reference for calibration. This multi-functionality allows the system to achieve high-accuracy movement prediction across multiple parameters using a unified optical measurement approach, improving precision while optimizing the complexity increase.
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
Enables high-accuracy prediction of flying object movements, including ascent, descent, turning, and changes in attitude, by measuring rotor wing rotation and using optical beat signals for enhanced distance measurement.
Implementation Method 1
a first light output device outputs output-light having a spectral component of a first optical frequency comb of which a frequency comb interval is a first interval
Implementation Method 2
reflection light that is the output-light reflected by a first rotor wing
Implementation Method 3
calculates a first rotation amount that represents a rotational speed of the first rotor wing based on a change amount of the measured first distance
Data Source
AI summary
A movement prediction apparatus including first and second light output devices, a light reception device, and a processor. The first light output device outputs output-light having a spectral component of a first optical frequency comb of which a frequency comb interval is a first interval. The second light output device outputs reference light having a spectral component of a second optical frequency comb of which a frequency comb interval is a second interval. The light reception device receives combination light that is a combination of the output-light, reflection light that is the output-light reflected by a flying object rotor wing, and the reference light, and measures a distance to the rotor wing based on the combination light. The processor calculates a rotation amount that represents a rotational speed of the rotor wing based on a change amount of the measured distance, and predicts a movement of the flying object.