Daowan DW23 Seabed-Based System

Category: Seabed-Based System
Art.No.: DW23
Keywords: Seabed-Based,
Supplier: Marine Environmental Monitoring

Introduction:

Daowan DW23 Seabed-Based System is a comprehensive undersea environmental monitoring solution designed for long-term, continuous and high-precision observation of marine environmental parameters and dynamic variations. Daowan DW23 Seabed-Based System is engineered for stability in extreme seabed conditions and equipped with a variety of instruments.It enables reliable acquisition of multi-dimensional datasets essential for analyzing oceanic processes.

System Components

1. Seabed Deployment Platform

Comprising a seabed framework, acoustic release units and auxiliary components, this platform serves as the stable and reliable installation base for all subsea monitoring system devices. Equipped with retrievable recovery buoys/floats and synchronized with acoustic release technology, it offers flexible recovery options for both individual sensors and the entire seabed-based system.

2. Subsea Environmental Monitoring System

As the core sensing unit of the seabed observation platform, this system integrates a master control module, power-communication integrated subsea cables, a power supply system, underwater cameras, multi-parameter water quality sensors, current meters, ADCPs and other monitoring devices. It functions as the centralized data acquisition and control hub, enabling comprehensive Direct-reading environmental profiling across seafloor ecosystems.

3. Shore-Based Meteorological Monitoring System

Designed to collect meteorological parameters near offshore seabed installations, this system enables integrated analysis of weather data. It enhances data rationality assessment, identifies anomalies, provides actionable weather insights for offshore operations and deployment strategy optimization.

4. Station Data Processing System

A human-machine interactive centralized monitoring and control hub incorporating software, network infrastructure and server hardware. It delivers Direct-reading analytics capabilities for multi-source marine datasets, supporting remote system management, predictive maintenance and cross-platform data fusion.

Types of System

1. Direct-Read Disposable Seabed Base

Features low overall cost, real-time data transmission, and high reliability. It is non-recoverable and difficult to maintain.

2. Buoy-Type Seabed Base

The system is equipped with acoustic release system. When the sensors require maintenance or retrieval, a release command is sent from the deck unit to release the buoy. The buoy is connected to a reserved underwater rope, allowing it to ascend to the sea surface. Subsequently, the underwater frame is recovered using a winch mounted on a surface vessel.

3. Floating-Body Seabed Base

The principle is essentially the same as that of the float-type design, with the difference being that all sensors are mounted on a floating body. When the sensors need to be recovered, the release mechanism detaches the entire floating body, allowing it to carry the sensors and float to the surface.

Specifications 

1. Main frame material: 316 stainless steel

2. Equipment recycling mode: fixed deployment, floating ball type, floating body type

3. Meteorological monitoring: irradiance, wind speed, wind direction, temperature, humidity, atmospheric pressure, carbon dioxide concentration meteorological parameters

4. Water quality monitoring: temperature, depth, salinity, dissolved oxygen, pH, chlorophyll, turbidity and other parameters

5. Hydrological monitoring: flow speed, flow direction

6. Underwater video: 1 channel

7. System power source: storage battery , shore-based power supply (Direct-reading)

8. Data storage: main control system, local storage, shore station server storage

9. Storage time: Monitoring data storage: 2 years; Video storage: 3 months (cyclic overwriting)