Seabed Observation System with Revolving Microelectrode Probing
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Solution Overview
Problem
Current seabed-based observation systems are inadequate for long-term, high-accuracy, three-dimensional monitoring of seabed deposits, particularly in detecting the decomposition and diffusion processes of petroleum and natural gas hydrates, as they lack the capability for multi-point observation and dynamic change analysis.
Innovation Solution
A long-term seabed-based multi-point in-situ observation system featuring a platform frame with a cylindrical structure, buoyant material, underwater acoustic communication, a central revolving table with a microelectrode probing system, and a control system that enables 360° revolving and vertical movement of the microelectrode probing system for precise sampling and data acquisition, combined with a control system for data processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional seabed-based observation systems are used, then long-term observation capability is provided, but multi-point observation and three-dimensional monitoring capability are lacking
Solution Approach 1:
The observation system is segmented into multiple independent observation units (first observation unit, second observation unit, third observation unit, fourth observation unit) distributed at different spatial locations. Each unit contains complete observation functionalities including sensors, power supply, and data processing components, enabling multi-point simultaneous observation while maintaining modular complexity management
Solution Approach 2:
The system transitions from traditional single-point or two-dimensional observation to three-dimensional multi-point observation by deploying observation units at different water depths and horizontal positions. The coordinate system establishment and spatial data processing enable comprehensive 3D monitoring of the marine environment, achieving volumetric observation capability
2Measurement precision
If marine geophysical prospecting methods are used, then exploration capability is provided, but time continuity and accuracy are insufficient
Solution Approach 1:
The observation units are designed as self-contained systems with integrated power supply (solar panels, batteries), autonomous data collection sensors, and self-regulating operational mechanisms. Each unit independently performs long-term continuous observation without requiring frequent external intervention, ensuring both high measurement precision and temporal continuity over extended periods
Solution Approach 2:
The system ensures continuous observation through redundant power supply systems, automated data sampling at configured intervals, and uninterrupted data transmission capabilities. The observation units operate continuously throughout the observation period, maintaining persistent monitoring of environmental parameters without gaps in data collection
3Loss of information
If subsurface buoy observation is used, then data continuity and vertical distribution density are improved, but observation lag in seawater environment occurs
Solution Approach 1:
The system employs underwater acoustic communication devices as intermediaries between the submerged observation units and surface vessels. This acoustic communication intermediary enables real-time data transmission from deep-water observation units to surface receivers, eliminating the time lag associated with traditional buoy systems that require surface deployment for data retrieval
4Area of stationary object
If sampling analysis method is used, then wide and deep sample range is achieved, but real-time observation and dynamic change detection fail
Solution Approach 1:
The system replaces mechanical sampling methods with in-situ electronic sensing and optical detection technologies. Sensors continuously measure environmental parameters (temperature, salinity, chemical composition, etc.) directly in the water column, eliminating the need for physical sample collection and laboratory analysis, thereby achieving real-time observation across wide spatial ranges
Data Source
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AI summary
The present invention relates to a long-term seabed-based multi-point in-situ observation system which comprises a platform frame, a buoyant material, an underwater acoustic communication device, a beacon, a monitoring chamber, a control chamber, a release control chamber, a central revolving table, ballasting weights and a microelectrode probing system; the platform frame has a cylindrical main body with a total of four layers from the top down; the buoyant material, the underwater acoustic communication device and the beacon are installed on the first layer; the monitoring chamber, the control chamber and the release control chamber are installed on the second layer; the central revolving table is installed on the third layer; and the ballasting weights are installed on the fourth layer. The present invention effectively realizes accurate multi-point locating function, then obtain the data of multiple detecting points in a detected zone upon demands, and finally can analyze and obtain the space distribution information of an active diffusion field. Therefore, important data supports are given to the evaluation on the oceanic environment effects in the process of petroleum leak and hydrate decomposition, thus providing support and services for the implementation of major projects such as seabed petroleum exploitation, and trial exploitation of the natural gas hydrates.