Camera Image Clarity in Vibrational Environments
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Solution Overview
Problem
Aerial photography using unmanned aerial vehicles (UAVs) is hindered by vibrations, which traditional vibration dampening hardware fails to adequately address, especially in small UAVs, as it increases weight and affects flight characteristics.
Innovation Solution
An image capture optimization system that utilizes an inertial measurement unit (IMU) to identify and signal the camera to capture images during 'dead points' in vibrational patterns, where minimal acceleration occurs, and adjusts shutter speed and exposure accordingly to minimize blur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vibration dampening hardware is used to reduce blur, then image clarity is improved, but UAV weight increases and flight characteristics deteriorate
Solution Approach 1:
The patent replaces mechanical vibration dampening hardware with an electronic solution using an inertial measurement unit (IMU) to detect vibrations and a controller to synchronize image capture with dead points in the vibrational pattern. This substitution eliminates the need for heavy mechanical dampening components while achieving the same image stabilization effect through timing-based control.
Solution Approach 2:
The patent changes the temporal parameter of image capture by dynamically adjusting when the camera shutter opens and closes based on real-time vibration data from the IMU. By capturing images during dead points (moments of minimal acceleration) in the vibrational cycle, the system achieves clear images without requiring physical dampening, thus avoiding weight penalties.
2Manufacturing precision
If vibration dampening hardware is used to reduce blur, then image clarity is improved, but payload capacity decreases
Solution Approach 1:
The patent replaces mechanical vibration dampening hardware with an electronic solution using an inertial measurement unit (IMU) to detect vibrations and a controller to synchronize image capture with dead points in the vibrational pattern. This substitution eliminates the need for heavy mechanical dampening components while achieving the same image stabilization effect through timing-based control.
3Manufacturing precision
If vibration dampening hardware is used to reduce blur, then image clarity is improved, but drag increases and range decreases
Solution Approach 1:
The patent replaces mechanical vibration dampening hardware with an electronic solution using an inertial measurement unit (IMU) to detect vibrations and a controller to synchronize image capture with dead points in the vibrational pattern. This substitution eliminates the need for heavy mechanical dampening components while achieving the same image stabilization effect through timing-based control.
4Manufacturing precision
If image capture is synchronized with dead points in vibrational pattern, then image clarity is improved, but capture timing precision requirements increase
Solution Approach 1:
The patent introduces an inertial measurement unit (IMU) as an intermediary device that measures vibrations along three orthogonal axes and provides real-time data to the controller. The IMU acts as a mediator between the physical vibrations and the camera control system, translating complex vibrational patterns into actionable timing information for capturing images during dead points.
Solution Approach 2:
The system implements a feedback loop where the IMU continuously monitors vibrations and provides real-time information to the controller, which then adjusts the camera shutter timing accordingly. This closed-loop feedback mechanism enables dynamic synchronization with dead points in the vibrational pattern, ensuring optimal capture timing even as vibration characteristics change during flight.
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 effectively captures clear and crisp images by synchronizing image capture with periods of minimal vibration, reducing blur and maintaining UAV performance without the need for heavy vibration dampening hardware.
Implementation Method 1
an inertial measurement unit (IMU) to measure a vibrational pattern experienced by the airframe and/or the camera
Data Source
AI summary
This disclosure describes optimizing a clarity of images captured by a camera exposed to vibrations, such as a camera mounted on an aerial vehicle. The vibrations can be caused by rotors, motors, forces (e.g., lift, drag, etc.) acting on the UAV, environmental factors (e.g., wind, turbulence, etc.), or any other force that may cause asymmetry. An inertial measurement unit can measure the vibrations and determine a vibrational pattern imposed upon the camera. The inertial measurement unit can identify one or more dead points in the vibrational pattern, and times associated therewith. The inertial measurement unit can send the one or more dead points and/or the times associated therewith to the camera, and cause the camera to capture and/or store images at times corresponding to the one or more dead points to enable capture of images with little or no blur.