Gyroscopic Camera Stabilization for Tethered Helicopter Surveillance
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Solution Overview
Problem
Existing tethered helicopter surveillance systems face challenges in angularly stabilizing a rotating helicopter to meet image clarity and resolution requirements for cameras mounted on them.
Innovation Solution
A gyroscopically stabilized camera platform is isolated from the helicopter, allowing the helicopter to move freely while maintaining a tethered fiber-optic connection for real-time data transfer to a ground station through a fiber optic rotary joint, enabling high-quality data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a camera is mounted on a rotating helicopter to enable surveillance, then the helicopter can be positioned anywhere in the sky for observation, but it is virtually impossible to angularly stabilize the rotating helicopter sufficiently to meet image clarity and resolution requirements
Solution Approach 1:
The system divides the stabilization function from the helicopter platform by introducing a separate gyroscopically stabilized platform that carries the camera. This segmentation allows the helicopter to rotate freely for positioning while the camera platform maintains stable orientation for clear imaging.
Solution Approach 2:
A gyroscopically stabilized platform acts as an intermediary between the rotating helicopter and the camera. This intermediate platform absorbs the rotational disturbances and provides a stable mounting base for the camera, enabling both helicopter mobility and image clarity.
2Productivity
If a tethered cable is used for data transfer between the helicopter and ground station, then real-time data transmission is enabled, but the cable must accommodate helicopter rotation while maintaining coupling efficiency
Solution Approach 1:
The system replaces traditional mechanical cable connections with a fiber optic rotary joint that uses optical fields for data transmission. This substitution eliminates the mechanical coupling problems associated with rotating cables while maintaining real-time data transmission capability.
Solution Approach 2:
The system changes the transmission medium parameter from electrical signals in copper cables to optical signals in fiber optics. This parameter change allows the data transmission to occur through a rotary joint without the mechanical coupling issues that plague traditional cable 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
This solution allows for the transfer of high-volume, high-quality real-time digital data between the airborne platform and the ground station, overcoming the limitations of angular stabilization and ensuring excellent coupling efficiency during rotation.
Implementation Method 1
a gyroscopically stabilized platform (4) is attached underneath of the helicopter (5). The camera and/or sensor system with media converters is located within the gyroscopically stabilized platform (4)
Implementation Method 2
The fiber-optic rotary joints allow for free rotation of fiber while maintaining excellent coupling efficiency
Data Source
AI summary
The invention aims to transfer a substantial volume of high-quality, high-volume real-time data, which currently cannot be achieved by wireless techniques, between a mobile airborne observation platform and the ground station via a tethered fiber connection between said platform and said ground station.