6 results about "Merchant ship" patented technology

The invention relates to the technical field of aquaculture, and discloses a sea-skimming type culture work ship based on oil collecting and distributing commercial ship refitting, which comprises a ship body, a deck is arranged at the top end of the ship body, and a plurality of culture cabins are arranged in the ship body and positioned below the deck; the ship body of an existing oil collecting and distributing commercial ship is modified, and the technical and regulation obstacles of recycling of old ships are solved; by optimizing the connecting structure of the sea cabin and the main ship body, the total longitudinal strength and the local strength of the ship body are cooperatively guaranteed; meanwhile, the requirements for complete stability and harsh broken cabin stability are met, and a centralizing torque dynamic compensation method is provided for variable loads in a transition state; by arranging an internal anti-oscillation structure and optimizing the form of the cabin, the oscillation impact of liquid in the sea cabin and the closed cabin is effectively inhibited; and aiming at high-density culture working conditions, efficient replacement of water in the culture cabin and stable water quality are ensured.

The application provides a kind of virtual DC motor model-free self-learning control method of port commercial ship micro-grid, to improve the stability of ship micro-grid DC bus voltage under the access of port commercial ship shore power, comprising the following steps: collecting ship micro-grid DC bus voltage, establishing ship virtual DC motor model and discretizing armature equation;Establish a tight format local linearization data model related to virtual DC motor input moment of inertia and output DC bus voltage;Design moment of inertia model-free self-learning controller and calculate pseudo partial derivative according to input and output data;Design adaptive adjustment of moment of inertia;By controlling ship micro-grid Buck / Boost converter, simulate the external characteristic of DC generator to stabilize DC bus voltage.The application effectively suppresses the fluctuation of ship micro-grid DC bus voltage caused by load switching and new energy output change under the access of port commercial ship shore power, while also optimizes the dynamic response speed of ship micro-grid DC bus voltage regulation.

The invention relates to the technical field of ocean, and discloses a complex meteorological marine path planning method based on space-time dependency modeling of a graph neural network, which comprises the following steps of: constructing a marine space-time diagram data structure; modeling meteorological space-time dependence based on a space-time diagram neural network; real-time meteorological data fusion and graph structure dynamic updating; performing multi-target path scheduling optimization to generate candidate paths; dynamic adjustment and feedback loops in path execution. Sailing safety can be improved, severe meteorological areas are avoided, and the probability that the ship encounters danger is reduced; the navigation efficiency can be improved, the navigation time and fuel consumption are reduced, and the operation cost is reduced; the method can better adapt to complex and changeable meteorological environments on the sea, provides a more flexible and accurate path planning scheme for ships, has wide application prospects, and can be applied to multiple related fields on the sea, such as commercial ship transportation, fishery fishing, sea rescue and the like.

The invention relates to the technical field of erosion and deposition monitoring, and discloses a self-adaptive seabed erosion and deposition monitoring and early warning method for an estuary navigable water area, and the method comprises the following steps: S1, obtaining a corrected vertical motion sequence; s2, calculating a dimensionless blocking coefficient, and constructing a heterogeneous observation array; s3, generating a sinking residual error for the detection ship; s4, performing frequency domain transformation on the vertical sequence of the detection ship, and extracting low-frequency inertia and high-frequency flow-induced turbulence characteristics; s5, differential verification is carried out, and a heterogeneous differential ratio is constructed; and S6, constructing a feature vector based on the sinking residual error and the heterogeneous difference ratio, judging the erosion and deposition state by using decision logic, and outputting an early warning. According to the method, a commercial ship is adaptively converted into a detection and reference ship by calculating a dimensionless blocking coefficient, and a hydrodynamic response is captured by using AIS and GNSS data; special measuring equipment is not needed, the problems that traditional surveying and mapping are long in period, high in cost and prone to interference are solved, and monitoring timeliness is improved.

This invention provides a port long-channel fog navigation system and method based on UAV navigation and small target detection and localization, comprising: a guided vessel and a pilot terminal layer, an aerial UAV, and a maritime support platform; the guided vessel and pilot terminal layer includes: a guided merchant ship and a pilot tablet terminal; the aerial UAV includes: two UAVs operating in a forward formation navigation mode; the two UAVs respectively acquire images and point clouds at a fixed frequency, attach a unified timestamp and their own attitude information, and send them to a tugboat RTX edge computing base station, where the tugboat RTX base station performs data fusion; the maritime support platform includes: a tugboat RTX base station, which establishes a unified ENU coordinate system, transmits data through a dedicated wireless link and a data access gateway, fuses the observation data from the two UAVs, and performs 3D positioning and collision avoidance calculations. This invention significantly improves the detection accuracy of small targets and the ability to share 3D situational awareness, thereby reducing the risk of collision.

The application provides a light-weight BS architecture offshore monitoring method and related equipment, and belongs to the technical field of offshore monitoring. The application comprises the following steps: receiving offshore radar and AIS data to obtain offshore fusion target data set; calculating a dynamic threshold based on the number of targets in the offshore fusion target data set and offshore scene load data, triggering container elastic scaling according to the dynamic threshold to obtain resource allocation data adapted to offshore target fluctuations; detecting the running state of microservices to obtain microservice health state data; and scheduling standby node resources according to the resource allocation data and the microservice health state data, and restoring the offshore fusion target data set through cache replication and data snapshot to obtain the restored offshore fusion target data set. The application can accurately identify and track fishing boat and merchant ship targets, and automatically and elastically schedule computing resources according to target quantity fluctuations.