Underwater Observation Unit for Sub-Centimeter Positional Monitoring
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Solution Overview
Problem
Existing underwater monitoring systems face challenges in accurately detecting positional changes of submerged assets due to environmental factors like tectonic shifts, volcanic activity, and sediment subsidence, requiring high-resolution, long-term, and self-powered monitoring with pressure resistance in deep-sea environments.
Innovation Solution
An underwater observation unit equipped with a housing, light source, imaging device, processor, and communication device, utilizing a fisheye lens for wide-field imaging and optical signal transmission, along with an orientation sensor for attitude data, enables accurate positional data collection and transmission over long distances with high resolution and low latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional underwater monitoring devices are used, then basic positioning can be achieved, but measurement precision is insufficient for detecting sub-centimeter structural changes
Solution Approach 1:
The system divides the monitoring task into multiple independent observation units distributed throughout the underwater environment. Each unit performs localized high-precision measurements, and the results are synthesized to achieve comprehensive sub-centimeter positioning accuracy without requiring a single complex system
Solution Approach 2:
The patent introduces virtual reference frames and coordinate transformations as intermediaries to reconcile measurements from multiple observation units. These mathematical intermediaries enable precise positional data fusion without direct mechanical coupling between all components
2Duration of action of stationary object
If monitoring systems operate continuously for long-term deployment, then structural changes can be detected over time, but energy consumption increases
Solution Approach 1:
The observation units implement periodic sampling of positional data at optimized intervals rather than continuous monitoring. The sampling frequency is dynamically adjusted based on environmental conditions and structural stability, enabling long-term deployment while minimizing energy consumption during stable periods
Solution Approach 2:
The system incorporates autonomous decision-making capabilities where observation units self-regulate their operational state based on detected structural changes. When stability thresholds are met, units enter low-power standby mode; when changes are detected, they automatically activate full monitoring capacity without external intervention
3Stress or pressure
If deep-sea observation units are designed to withstand high pressures, then they can operate in deep-water environments, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The monitoring system uses multiple distributed observation units with standardized pressure-resistant housings rather than one large complex system. This segmentation allows each unit to be manufactured using standard deep-sea equipment protocols and then assembled through modular connections, reducing overall manufacturing complexity
Solution Approach 2:
The patent employs materials and structural designs optimized for specific pressure ranges rather than over-engineering for maximum depth. Observation units can be manufactured for their operational depth requirements, then deployed to locations where their pressure resistance parameters are sufficient, simplifying manufacturing while ensuring safety
4Reliability
If multiple observation units are deployed to form a meshed network, then measurement precision and reliability improve, but system complexity and deployment difficulty increase
Solution Approach 1:
The system merges the capabilities of multiple independent observation units into a coordinated meshed network. Each unit maintains its own autonomous functionality while contributing to a unified positional measurement system, achieving enhanced reliability through redundancy without requiring centralized control
Solution Approach 2:
The observation units are designed as universal, multi-functional modules that can operate independently or as part of the larger network. Each unit performs the same core functions (positioning, imaging, communication) but adapts its role based on network position and requirements, simplifying deployment and maintenance while improving overall system reliability
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 accurate sub-centimeter positional data of submerged assets, enabling timely detection of structural changes and stress estimation between interconnected components, with the ability to form a meshed network for enhanced reliability and prolonged operation.
Implementation Method 1
The light source is fixed to the housing, and is configured to emit light into the surroundings of the observation unit
Implementation Method 2
The underwater imaging device is attached to the housing, and is configured to acquire image data of a second light source located within a wide field of view (FOV) of the imaging device
Data Source
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AI summary
An observation unit (30) for underwater deployment on/in a submerged earth layer (12) or structure. The unit comprises a housing (32), a light source (36), an underwater imaging device (40), a processor device (44), and a communication device (35). The housing supports the underwater observation unit relative to the submerged layer or structure. The light source is fixed to the housing, and configured to emit light into the unit's surroundings. The imaging device is attached to the housing, and configured to acquire image data of a second light source located within a FOV of the camera that covers the surroundings of the unit. The processor device is configured to determine positional data of the second light source relative to the imaging device, from the image data. The communication device is configured to transmit the positional data to another underwater observation unit, an underwater vehicle, or an underwater processing station.