Tethered Balloon Camera Control for Long-Term Aerial Imaging

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Solution Overview

Problem

Current aerial imaging systems, such as UAVs, face limitations in battery life, high costs, and regulatory restrictions, making them unsuitable for long-term monitoring and applications requiring continuous imaging, while satellite and airplane imagery is expensive and inflexible.

Innovation Solution

A low-cost, flexible aerial imaging system using a tethered balloon or kite as an aerial platform, equipped with a camera and a mobile device for path planning and image alignment, allowing for extended coverage and efficient image capture while accounting for wind disturbances and battery life optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If UAVs are used for aerial imaging, then high-resolution imagery can be captured, but battery life is limited to tens of minutes making long-term monitoring infeasible

Engineering Contradiction:
Improvebattery lifeVSAvoidcontinuous monitoring capability
Core Design Contradiction:
Duration of action of moving objectVSReliability

Solution Approach 1:

The patent replaces expensive, complex UAV systems with simple, low-cost aerial platforms (such as tethered balloons or kites) that can operate continuously without battery limitations. These platforms use passive aerodynamic principles rather than powered flight, eliminating the battery life constraint while maintaining imaging capability through a camera mounted on the platform.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Reliability

If mid-to-heavy payload carrying UAVs are used, then aerial imaging capability is achieved, but capital investment cost exceeds a thousand dollars

Engineering Contradiction:
Improveaerial imaging capabilityVSAvoidcapital investment cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs extremely simple aerial platforms such as tethered balloons, kites, or even rigid frameworks that can be constructed for minimal cost. These platforms carry lightweight camera equipment and can be built using basic materials, reducing capital investment from over a thousand dollars to a fraction of that cost while maintaining functional aerial imaging capability.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent creates simplified copies of traditional aerial imaging systems by replacing complex UAV mechanisms with basic aerodynamic structures. Instead of copying the expensive UAV design, it uses analogous principles (aerial platforms carrying cameras) with dramatically reduced complexity and cost.

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If UAV batteries are used frequently, then operational flexibility is maintained, but finite charge cycles require frequent battery replacement

Engineering Contradiction:
Improveoperational flexibilityVSAvoidbattery replacement frequency
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent eliminates batteries entirely from the aerial platform by using passive aerodynamic structures (tethered balloons, kites) that remain stationary or are slowly moved by ground operators. This removes the battery charge cycle limitation and replacement frequency issue while maintaining operational flexibility through manual or semi-automatic control.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent introduces a tether as an intermediary between the ground and the aerial platform, allowing the platform to remain airborne without self-propulsion. The tether transmits control forces and power from the ground, enabling continuous operation without battery constraints while maintaining adaptability through ground-based control.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Area of stationary object

If satellite or airplane imagery is used, then large-scale coverage is achieved, but cost is expensive and flexibility is reduced

Engineering Contradiction:
Improvecoverage areaVSAvoidoperational flexibility
Core Design Contradiction:
Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The patent segments the aerial imaging task into multiple passes or multiple simple platforms rather than relying on a single expensive satellite or airplane mission. The tethered platform can be repositioned incrementally to cover larger areas over time, providing flexible, incremental coverage at low cost.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates a dynamically adaptable imaging system where the tethered platform can be repositioned, reconfigured, and reused indefinitely. Unlike fixed satellite orbits or scheduled airplane flights, this system allows real-time adaptation to changing monitoring needs, weather conditions, and area requirements, providing both flexibility and scalable coverage.

Inventive Principle:
Principle #15Dynamics

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 provides high-quality, cost-effective aerial imagery over extended periods, suitable for applications like agricultural monitoring and crowd surveillance, with reduced operational costs and increased flexibility compared to traditional methods.

Implementation Method 1

an aerial platform configured to rise to a height above ground

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

The aerial platform may be an apparatus such as a balloon or a kite

Methodology Applied
Scientific EffectAerodynamic lift: Aerofoil

Data Source

PatentEP3686868B1Low-cost, long-term aerial imagery
Publication Date: 2021.06.16 MICROSOFT TECHNOLOGY LICENSING LLC
  • EP3686868B1 patent drawingFigure 1A~1B
  • EP3686868B1 patent drawingFigure 2A~2C
  • EP3686868B1 patent drawingFigure 3

AI summary

An imaging system that includes a camera mounted on an aerial platform, for example a balloon, allows a user to increase the longevity of the camera's battery by remote control. A user may capture imagery at a time scale of interest and desired power consumption by adjusting parameters for image capture by the camera. A user may adjust a time to capture an image, a time to capture a video, or a number of cycles per time period to capture one or more images as the aerial platform moves in a region of interest to change power consumption for imagining. The system also provides imagining alignment to account for unwanted movement of the aerial platform when moved in the region of interest. Additionally, a mounting device is provided that is simple and inexpensive, and that allows a camera to remain positioned in a desired position relative to the ground.