Methane-Guided Deep-Sea Sampling for Precise SMTZ Core Recovery
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Solution Overview
Problem
Current deep-sea sediment samplers have low precision and small sampling volume, leading to disturbance during sampling and inability to accurately collect the SMTZ region, which is crucial for studying AOM reactions and deep-sea ecosystems, and they fail to maintain the in situ environment, causing distortion of environmental and biological indicators.
Innovation Solution
A multi-medium large-diameter fidelity sampling apparatus with a methane concentration detection array to determine SMTZ depth, a first control module for precise sampling, and a sample collection module for pressure-retaining and real-time thickness monitoring, enabling on-demand release or secondary sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current deep-sea sediment samplers are used, then sampling operation is simple, but sampling precision is low and sampling volume is small
Solution Approach 1:
The sampling system is divided into multiple independent modules: penetration module, sampling module, and detection module. Each module performs a specific function, allowing for precise control and measurement while maintaining operational simplicity through modular design.
Solution Approach 2:
A detection module continuously monitors sampling parameters and provides feedback to the control system. This enables real-time adjustment of sampling depth, pressure, and volume to achieve high precision sampling while the automated feedback loop maintains device operation simplicity.
2Quantity of substance
If current deep-sea sediment samplers are used, then device operation is simple, but sampling volume is small and disturbance occurs
Solution Approach 1:
The sampling device employs dynamic adjustable parameters including variable sampling volume, adjustable penetration depth, and controllable sampling rate. This allows the system to adapt to different sampling requirements and achieve large volume collection while the automated control maintains ease of operation.
Solution Approach 2:
The system dynamically changes operational parameters such as pressure, volume, and depth based on real-time detection data. This enables large-scale sampling without disturbance by adjusting parameters to match optimal sampling conditions while maintaining simple operation through automated parameter management.
3Reliability
If current deep-sea sediment samplers are used, then sampling process is simple, but in situ environment cannot be maintained causing indicator distortion
Solution Approach 1:
The sampling system maintains an in situ-like environment within the sampling chamber by controlling pressure, temperature, and chemical composition. This creates an inert environment that prevents sample alteration while the automated environmental control systems manage complexity through integration.
Solution Approach 2:
The system continuously maintains optimal environmental conditions throughout the sampling process, from penetration to sample retrieval. This continuous control ensures environmental integrity while integrated systems maintain ease of operation through automated monitoring and adjustment.
4Measurement precision
If current deep-sea sediment samplers are used, then equipment is simple, but sampling precision is low leading to inability to accurately locate SMTZ region
Solution Approach 1:
The detection module performs preliminary detection of methane concentration and environmental parameters before sampling begins. This preliminary action identifies the SMTZ region location, allowing precise targeting of the sampling operation while the pre-programmed detection algorithms reduce measurement difficulty.
Solution Approach 2:
The system replaces manual mechanical sampling with automated detection and control systems that use sensors, algorithms, and automated actuators. This substitution enables precise SMTZ localization through electronic detection and automated positioning, reducing the difficulty of detection and measurement.
Data Source
AI summary
The present invention discloses a multi-medium large-diameter fidelity sampling apparatus and sampling method, and relates to the field of deep-sea sampling. The apparatus includes: a methane concentration detection array, configured to detect methane leakage situation at a target sampling site and generate methane detection information; a first control module, configured to determine SMTZ depth information at the target sampling site based on the methane detection information, and further configured to determine a first control instruction based on the SMTZ depth information; and a sample collection module, configured to perform pressure-retaining sampling in response to the first control instruction, and further configured to determine sample thickness information, and to release the sample and/or perform secondary sampling based on a second control instruction determined by the first control module in response to the sample thickness information.