47 results about "Marine technology" patented technology

The invention discloses a marine ranching shore-based monitoring system which belongs to the field of marine technology. The marine ranching shore-based monitoring system comprises a shore-based control system, a seabed observing platform, a monitoring control center and a submarine cable. Sensor data and a seabed real-time video are integrated through the seabed observing platform and are transmitted to the shore-based control system through a cable. The shore-based control system transmits data to the monitoring control center. The instruction of the monitoring control center is successively transmitted to the shore-based control system and the seabed observing platform for realizing remote control. According to the marine ranching shore-based monitoring system, a problem of integrating energy supply and data transmission in an underwater system is settled through designing the seabed observing platform and arranging the submarine communication cable. The marine ranching shore-based monitoring system realizes long-term real-time online stable and automatic monitoring on marine essential factors such as ecological environment.

The invention belongs to the technical field of ocean, and provides an ecological breakwater compounded by submerged breakwater and square hole grid artificial fish reef. The ecological breakwater comprises a riprap foundation bed, an artificial coral reef protection bottom, a submerged breakwater, a square hole grid artificial fish reef and joint columns, wherein the submerged breakwater is arranged at the top of the riprap foundation bed, the square hole grid artificial fish reef is arranged on the outer side of the submerged breakwater, and the node columns are arranged between the submerged breakwater and the square hole grid artificial fish reef. According to the ecological breakwater, the square-hole grid artificial fish reef is arranged along the marginal quay direction, the square-hole grid empty box cover surface formed by the square-hole grid artificial fish reef interacts with waves to dissipate wave energy and protect the internal submerged dike, meanwhile, the porous structure of the hollow curved surface has a large surface area to provide more inhabiting space for organisms, and also has good water permeability, so that internal and external water exchange can be enhanced.

The invention relates to the technical field of optical fiber sensing and ocean, in particular to a device and method for simultaneously picking up self-vibration signals of an underwater platform and external sound signals, and the device comprises a light source light transmitting module, a link module, a sensing module and a modulation-demodulation module; picking of the self-vibration signals of the underwater platform and the external sound signals is integrated into a set of optical fiber phase type sensing device, and through installation design and an anti-interference signal extraction method, link optical fibers are ingeniously utilized to load platform self-vibration signals, so that the problem that a plurality of sensors are needed for sensing a plurality of parameters is solved; and meanwhile, the two signals are extracted by adopting an optical coherence detection mode, so that the device has the advantages of high sensitivity, small size, light weight, electromagnetic interference resistance and the like, and has good adaptability to a miniaturized underwater platform.

The invention discloses a marine rescue system in the field of marine technology. The system comprises an annular airbag with two ends fixed to the rescue mother ship and the rescued ship respectively, and a winch mounted on the rescue mother ship, A cable wound around the winch is pierced into the cavity of the annular air bag, During the winch unwinding process, the safety protection rope at theend of the rope passes through the cavity of the annular airbag to reach the rescued ship and fix the trapped persons. During the winch unwinding process, the safety protection rope at the end of therope lifts the trapped persons through the cavity of the annular airbag to the rescue mother ship to complete the rescue. As that annular airbag is use for providing support and protection, the invention combine with the winch lifting method to carry out the safety rescue of the trapped person at sea, the invention has the advantages of high safety, low cost and easy implementation.

The invention relates to the technical field of marine technology and navigation, and particularly provides a grid equiangular air line applicable to polar navigation and a design method thereof. Thegrid equiangular air line is defined as a curve intersecting with all grid heading reference lines to form fixed included angles on the ellipsoid face of the globe. The invention provides a specific air line equation and grid heading angle calculating method. The air line voyage is short, grid heading angles on the air line are equal, the air line is shown as a straight line on a polar spherical projection drawing, the air line can be strictly applied in cooperation with the grid navigation method and polar spherical projection and is more suitable for polar navigation.

The invention belongs to the field of marine technical equipment, and particularly relates to an automatic floating device of an underwater robot and a method for controlling the automatic floating device. The method includes that faults such as water leakage can possibly occur due to complexity of work environments of the underwater robot, the underwater robot urgently needs to float out of water surfaces, water leakage signals can be detected by a water leakage sensor inside the underwater robot at the moment, and can be transmitted to a central controller, signals can be transmitted to an igniter after the signals are processed and judged by the central controller, the igniter can be activated and carries out ignition to initiate chemical reaction, a large quantity of gas can be generated instantly, is filtered by a filter and then flows into a gas bag, a gas bag cover can be flicked after the gas bag is quickly expanded, the gas bag is immediately unfolded right above the underwater robot, the volume and buoyancy of the underwater robot are increased after the gas bag is unfolded, and the underwater robot can ultimately float out of the water surfaces under the effect of net buoyancy, can be timely found by staffs under the assisting effect of a GPS (global positioning system) positioner and can be recovered. The automatic floating device and the method have the advantages that the automatic floating device is simple in structure and can work reliably, and the response capacity of the underwater robot under special conditions can be greatly improved.

The invention discloses an underwater three-dimensional temperature-salinity parallel forecasting method based on a LightGBM model, and relates to the technical field of ocean. The method comprises the following steps: carrying out data preprocessing on obtained sea surface temperature historical data, sea surface height historical data and Argo buoy historical data; and after a sea surface temperature abnormal value, a sea surface height abnormal value and an Argo buoy abnormal value which are uniform in temporal-spatial resolution are obtained through screening, constructing a training data set, and performing parallel training based on the LightGBM model to obtain an underwater three-dimensional temperature-salinity forecasting model for underwater three-dimensional temperature-salinity forecasting. The method fully utilizes rich sea surface satellite data, and realizes analysis and forecasting of the underwater three-dimensional temperature-salinity information through a parallel algorithm, so that the forecasting precision of the three-dimensional temperature-salinity information is guaranteed, the forecasting efficiency is remarkably improved, and the limitation of inversion of the underwater three-dimensional temperature-salinity information in dynamics and statistics is broken through.

The invention relates to an underwater acoustic target positioning and tracking method based on the networking technology of wave gliders, belonging to the field of marine technology. Equipped with satellite communication module, attitude indicator and compass. A single node is connected to the centralized control center through satellite broadband communication. Multiple nodes realize remote real-time networking and transmit single-point acquisition signals back to the centralized control center. The centralized control center integrates signals from multiple nodes to preliminarily estimate the underwater acoustic target position. When the number of valid nodes is not enough to estimate the target position, the centralized control center plans the running trajectories of other wave gliders near the valid nodes to cover the target area, thereby increasing the number of valid nodes for target detection. Using the preliminary estimated underwater acoustic target position as the observed value of the target position, and combining the target motion equation to estimate the target current position as the final output, the accurate positioning and tracking of the underwater acoustic target can be realized.

The invention relates to the technical field of ships, in particular to a ship anti-rolling device suitable for large ships. The anti-rolling device is provided with one or more buffer energy-absorbing mechanisms on both sides of the hull, through which the buffer energy-absorbing mechanism can effectively buffer, absorb, and transform the lateral force of waves on one side of the hull, reducing the transverse force of the ship. Shake, keep the ship sailing smoothly, and help to increase the deadweight tonnage of the ship and improve the safety of the ship.

The invention discloses a marine rescue system in the field of marine technology. The system comprises an annular airbag with two ends fixed to the rescue mother ship and the rescued ship respectively, and a winch mounted on the rescue mother ship, A cable wound around the winch is pierced into the cavity of the annular air bag, During the winch unwinding process, the safety protection rope at theend of the rope passes through the cavity of the annular airbag to reach the rescued ship and fix the trapped persons. During the winch unwinding process, the safety protection rope at the end of therope lifts the trapped persons through the cavity of the annular airbag to the rescue mother ship to complete the rescue. As that annular airbag is use for providing support and protection, the invention combine with the winch lifting method to carry out the safety rescue of the trapped person at sea, the invention has the advantages of high safety, low cost and easy implementation.

The invention discloses a measuring apparatus and method for the inclination angle of a jacket platform, which belongs to the field of marine technology. The measuring apparatus for the inclination angle of the jacket platform comprises a top disc, a hemispherical shell and a suspension cable, wherein the top disc is a cylinder, the lower surface of the top disc is fixedly connected with a three-legged support with a downward apex which is located on a central vertical line of the top disc, one end of the suspension cable is fixedly connected with the apex of the three-legged support, the other end of the suspension cable is connected with a suspension bracket in fixed connection with the hemispherical shell, the interior surface of the hemispherical shell is marked with latitude and longitude, and a laser transmitter is arranged at the circle center of the lower surface of the top disc. The measuring apparatus provided by the invention has the beneficial effects of capacity of faster and more accurate measurement of the inclination angle of an offshore jacket platform, low price, convenience in installation, accuracy in inspection, simple structure and good universality.

The invention belongs to the technical field of ocean and discloses a port observer for ocean waves. Aiming at the problem that the observation screen of the existing port observer is easily wetted by the waves, resulting in blurred observation, and the connection between the wires in the observer and the shell is prone to leaks, resulting in moisture intrusion, this paper proposes this Invented scheme. The port observer includes a casing, the bottom inner wall of the casing is fixedly mounted with an observer, the bottom of the casing is fixedly mounted with a bottom plate, and four symmetrically arranged support rods are slidably connected to the bottom plate. Threads are provided, a backing plate is fixedly installed on the bottom end of the support rod, and a baffle is fixedly installed on the top end of the support rod. The port viewer of the present invention is simple to operate and easy to use, can wipe the transparent glass of the viewer, and can also adjust the height of the viewer, and at the same time, it is convenient to disassemble and assemble connecting wires, and can be sealed, which is convenient for use.