45 results about "Maritime safety" patented technology

The invention discloses a CFAR (Constant False Alarm Rate) and sparse representation-based high-resolution SAR (Synthetic Aperture Radar) image ship detection method, which mainly solves the problems of large data quantity to be processed and low real-time property existing in the conventional method. The method comprises the following detection steps: selecting a ship target training sample in a high-resolution SAR image and determining the size of a CFAR sliding window by the training sample; down-sampling the high-resolution image, performing image segmentation and land elimination on the high-resolution image, detecting in a low-resolution image by using the CFAR method and performing preliminary identification, and mapping a detected pixel point to a potential target region in the original high-resolution image; outputting potential target region slices obtained by all detection; and finally, extracting characteristic vectors of the potential target region slices respectively and identifying through a sparse representation classifier to obtain a final ship detection result. The CFAR and sparse representation-based high-resolution SAR image ship detection method has the advantages of high detection speed, high detection rate and low false alarm rate, and can be used for fishery supervision, maritime safety management and the like.

The invention discloses a maritime safety navigation intelligent induction device. The device can automatically calculate and generate an optimal safe navigation route based on the position of an induced ship OS at an arbitrary time and display the route on ECDIS from the position to the plan end point of the voyage. When a passing ship is in a monitoring distance around the induced ship, the device can automatically judge the risk and generate a cautious angle. Different colors are used to indicate the cautious angle of the induced ship OS relative to different passing ships TS, and the sidelength of the cautious angle can be further used to distinguish the cautious angle of the OS relative to different TSs and indicate the minimum speed of the OS with collision, so as to indicate the order in which the induced ship OS contacts or collides with different passing ships TS and the maximum speed of the OS to avoid collision. The range of safe heading angles for the induced ship OS, a careful navigation angle range relative to different TSs, and the extent to which the OS needs to be slowed down during voyages in the careful navigation angle range to ensure safety are acquired. An intelligent safe navigation support is provided for a driver.

The invention discloses a magnetofluid wave energy underwater charge platform with a compact structure, low noise and high reliability. The charge platform mainly consists of a support, a heaving floater, a connecting rod, a vertical pipe, limited blocks, a main piston, hydraulic devices, reciprocating type liquid metal magnetohydrodynamic generators, an underwater floater, unmanned underwater vehicle docking base stations, an energy storing device, a communication device, a mooring device and a control system, wherein the components are vertically suspended in seawater. The reciprocating type liquid metal magnetohydrodynamic generators which are matched with wave kinetic characteristic and are high in power density are adopted by the invention instead of the existing high-speed rotating generator, so that wave energy is directly converted into electric energy, continuous power supply is provided for the unmanned underwater vehicle docking base stations, and energy source supply is carried out on an unmanned underwater vehicle. Besides charging the unmanned underwater vehicle, the charge platform can supplies power for a plurality of loads, such as a maritime safety monitoring platform, a maritime communication relay station and an ocean observation and measurement platform.

A fall detection and recovery system includes cameras positioned around a perimeter of a vessel. The system analyzes video from the cameras to detect a falling object from the vessel and records a geolocation of the vessel at a time of falling of the object. The system applies environmental readings to evolve a recovery location for the falling object from the time of falling to a present time.

The invention discloses a maritime safety information broadcasting system based on Beidou navigation. The system comprises an information broadcasting platform. The information broadcasting platform is electrically connected with a Beidou satellite command aircraft. The Beidou satellite command aircraft is wirelessly connected with a Beidou satellite. The Beidou satellite is wirelessly connected with a Beidou ship-borne terminal. The Beidou ship-borne terminal comprises a shell, a Beidou location module, a Beidou communication module, a microprocessor, a controller, a data memory, a microphone, a loudspeaker and a display screen. The microphone, the loudspeaker and the display screen are mounted on a front panel of the shell. The maritime safety information broadcasting system based on Beidou navigation has the advantages of small investment scale, convenient networking, short construction period and high operation safety reliability.

The invention discloses a marine fishery maritime safety command system. The system is based on a marine fishery AIS collision system, a Beidou navigation system and an ocean radio system, and provides functions such as account management and password modification for local users, update of basic data of ships, chart data update, export of chart pictures, print of screen charts, operation video recording, system parameter setting, query and statistics, video surveillance playback for ships; specific requirements for chart are displayed to perform ship monitoring, notification, alarm and shortmessages are only sent to a monitored ship, and playback of the ship tracks and data query can be achieved; and alarm rescue can customize alarm area drawing and can customize alarm area management, weather and typhoon information display.

The invention discloses an on-sea intermediate frequency digital broadcasting system, comprising: an information management sub-system used to collect and control various kinds of on-sea security information, to create the information files requiring to be transmitted, and to create the emission sequence according to the priorities and the repetitive requirement of the files; an offshore broadcasting and transmitting station to receive and convert the information files from the information management sub-system into an OFDM signal and broadcasting the RF signal to a ship through antenna radiations; and a ship mounted receiver to receive wireless electric signals, to modulate the OFDM signal, to re-create the information files, and according to the application classification of the information files, to display the information contents or provide the information files to a designated device. The information management sub-system and the offshore broadcasting and transmitting station are connected through an offshore network; the offshore broadcasting and transmitting station is connected with the ship mounted receiver through a wireless transmission channel. The on-sea intermediate frequency digital broadcasting system proposed by the invention is able to make the ship information system and the device connected in a seamless manner; and therefore, the broadcasting and transmitting efficiency is high; the coverage is wide and the requirement for broadcasting and transmitting various kinds of MSI data can be fulfilled.

The invention discloses a ship wandering detection method based on AIS data, and the method can achieve the detection of the wandering behaviors of a ship according to the obtained AIS track data of the ship and the massive track data, classifies the wandering behaviors of the ship, and summarizes the relation between the tracks of four types of typical abnormal motion behaviors of the ship and adefined variable. According to the relationship between the ship motion trail characteristics and the statistical parameters, analysis is performed and the abnormal wandering behavior of the ship is detected according to the trail distribution condition in the grid. After the ship AIS track is filtered and smoothened, a global space-time grid index is established, gridding processing is conductedon the ship track, ship abnormal motion is detected according to ship abnormal behavior track characteristics, and abnormal classification alarming is conducted on ship motion behavior track abnormity. The ship wandering behavior detection can provide decision support for marine safety supervision, enhances marine traffic safety, ensures safe sailing of the ship, and has important significance forpromoting marine transportation to be safe, efficient and smooth.

A maritime safety system comprising at least one transmitter unit (12, 14, 16, 18), each transmitter unit being arranged to transmit successive signals by wireless communication at pseudo random intervals and each transmitter unit (12, 14, 16, 18) having an associated transmitter range, a base station (10) arranged to receive said transmitted signals and an alarm device (20). The base station (10) is arranged to cause the alarm device (20) to generate an audible and / or visible alarm when a plurality of successive signals from at least one of the transmitter units (12, 14, 16, 18) are not detected, and the arrangement is such that when a transmitter unit (12, 14, 16, 18) is disposed a distance from the base station (10) which is greater than the transmission range associated with the transmitter unit and a plurality of successive signals are not detected, an audible and / or visible alarm is generated.

A marine safety device for deployment in water upon unwanted entry by a person into the water to indicate the location of and to provide buoyancy for that person; the assembly comprises a cover for retaining components of the device as an undeployed package, an inflatable mast having a proximal end which engages the cover and a distal free end, means for inflation of the inflatable member upon contact between the device and a body of water. A weight is located at or near the proximal end of the inflatable member to bias the inflatable member to a generally upright position. The device further comprises means to enable a person in the body of water to gain floatation from the assembly via at least one grippable member attached to the inflatable member. The device when deployed, sits in the body of water so that at least part of the inflatable member remains exposed to view above a top water level to enable rescuers to pinpoint the location of the person in the water and to enable a person in the water to use the inflatable member as a buoyant safety device.

The invention discloses a maritime multi-band and multi-system life-saving radio station and a life-saving method thereof. The radio station comprises an enclosure and the following components arranged in the enclosure: a Beidou module for alarming and / or short message communication and / or positioning in the sea at a long distance; a 9GHz SART module for maritime position display; a VHF / UHF voicemodule for radio voice communication for sea-to-air medium and short visual range; an LED flash module for maritime nighttime display; a main control unit for controlling each module; a battery pack for supplying power to each module and the main control unit respectively. Through a multi-band and multi-system combination, the portable global maritime peril and safety communication integration technology is achieved within a portable structure range, and the limitation that the conventional peril life-saving technology can only perform a single function is broken, so that the life-saving success rate is improved and the reliability of maritime safety is improved.

The invention discloses a fishing boat safety management monitoring system based on 5G and Beidou satellites, and the system comprises seven parts: a 5G system platform, a Beidou satellite system platform, a mobile Internet-of-Things platform, a fishing boat cloud platform, a real-time monitoring platform, a cellphone APP, and a fishing boat safety management monitoring system. The fishing boat safety management monitoring system is carried by a fishing boat going out of the sea. Through Beidou communication, the positioning system receives real-time information sent by the Beidou satellite system platform in the space, sends 5G high-definition real-time communication to the offshore 5G micro base station through the 5G system platform, and sends the information to the 5G system platform through signal optimization processing. Under the action of the mobile Internet-of-Things platform, the processed information is sent to the Beidou satellite system platform, the fishing boat cloud platform, the mobile phone APP and the Beidou satellite base station at the same time, and new information is fed back to the sea fishing boat in real time. Maritime safety is reduced, and safety of a sea fishing boat is guaranteed.

The invention discloses a coast NAVTEX information broadcast monitoring system, which comprises a coast radio station central console monitoring terminal and reception monitoring terminals arranged at monitoring points around a coast radio station. The reception monitoring terminals are arranged at the monitoring points around the coast radio station within a range of 200-500 KM; and the coast radio station central console monitoring terminal collects NAVTEX messages received by the monitoring points, horizontally and vertically compares the received information data in space and time, carries out analysis and statistics of reception and emission error rate, and allows NAVTEX navigation warning information broadcast problems to be found in time so as to adjust a coastal station NAVTEX transmitter deployment strategy, thereby ensuring that ships within a coastal station NAVTEX coverage area receive navigational warning information in time, providing maritime safety information service for ships at home and abroad better and ensuring life and property safety of ships and crews.

The invention provides a method and a system for remotely verifying seamen based on face recognition, The crew remote verification method comprises the following steps: obtaining the information of the ship to be verified, creating a crew remote verification task according to the information of the ship, and then notifying the remote crew on the ship to open the verification system for remote verification through a remote call mode; performing Face detection in vivo by remote verification system; obtaining The face photos of the seamen and querying the identity information of the seamen from the seamen's face database according to the face photos. According to the crew identity information to query the crew certificate information in the Maritime Safety Administration business database; Acquiring the geographic position information of the crew and the ship, and judging whether the geographic position of the crew is within the preset deviation range of the geographic position of the ship; Yes, the result of the crew verification is returned; No, returning the result of the crew's verification of non-conformity. The invention solves the problems of low efficiency and low accuracy ofthe traditional manning verification method.

The invention discloses an intelligent detection method and device for monitoring marine safety operation of a ship, and belongs to the technical field of marine safety and intelligent image detection. The method comprises the steps of acquiring and storing image information of a cockpit, a foredeck and an afterdeck of the ship; acquiring navigational speed information and longitude and latitude information of a ship; judging whether the ship is in a sailing state or not through the navigational speed information and judging whether the ship is in a harbor area or not through the longitude and latitude information; acquiring image information of a ship in a non-harbor area and in a sailing state, performing image recognition, acquiring violation images of a cockpit, a foredeck and an afterdeck, recording detection time of the violation images, and storing the violation images; when the violation duration exceeds a set time length, giving an alarm, and uploading violation images, ship information and starting and ending time information of the violation images to a server and displaying through a ship management platform. The problems of unmanned driving and no life jacket wearing by sailors in the sailing and operation process of the ship can be monitored in real time.

The invention discloses an underground fixed liquid level testing device. The underground fixed liquid level testing device comprises an underground instrument and a ground control box, wherein the underground instrument mainly comprises a sounding device and a data acquiring device; the ground control box mainly comprises a ground computer terminal and a nitrogen bottle; the nitrogen bottle is connected to the sounding device of the underground instrument through a gas pipe for sounding in a well; the data acquiring device comprises a sound sensitive sensor, a pressure sensor and a core control circuit arranged in the well; the sound sensitive sensor and the pressure sensor are connected with the core control circuit; the core control circuit receives and stores data acquired by the sound sensitive sensor and the pressure sensor; and the core control circuit is connected with the ground computer terminal through an optical cable. The underground fixed liquid level testing device can realize continuous testing of a liquid level in an oil well, can satisfy the requirements of maritime safety production, and can solve the current situation of incapability of testing the liquid level due to the installation of a cable packer in a maritime electric pump well.

A barge for recovery of a rocket launch vehicle is proposed, which can recover a launch vehicle from the sea onto the land in safety during launch vehicle recovering work. The barge can recover the launch vehicle in safety by effectively preventing a slope of the structure which supports the launch vehicle.

The invention provides a near-shore self-propelled quick lap joint trestle device based on dynamic positioning, which comprises a near-shore lightering platform, the near-shore lightering platform is used for butt joint lightering with a transport ship in the sea, the near-shore lightering platform comprises a carrying deck and a connection deck, the carrying deck and the connection deck are arranged at an interval, the carrying deck is located above the connection deck, and the connection deck is located above the carrying deck; the connection deck is of a truss structure and used for being in butt joint with a transport ship for lightering. The shore-connected combined trestle is used for being connected with the connection deck, the shore-connected combined trestle comprises a plurality of trestles, the trestles are sequentially connected, each trestle comprises a trestle platform and a plurality of pile legs, and the pile legs are movably connected with the trestle platform. By means of the technical scheme, berthing and equipment material lightering platforms can be provided for various transport ships, and offshore safe lightering of heavy materials is achieved.

The invention discloses a weather monitoring device for marine safety. The device comprises a main body frame: a solar panel which is disposed on the outer side of the main body frame, a buoy base which is arranged at the lower end of the main body frame, and a fixing mechanism which is arranged on the upper side of the buoy base, and the buoy base is connected with the main body frame through the fixing mechanism; the device further comprises a power assembly which is arranged at the lower end of the buoy base, the upper end of the power assembly and the buoy base form a bearing connection structure, and the upper end of the power assembly penetrates through and extends out of the buoy base; the device further comprises a transmission mechanism which is arranged on the inner side of the main body frame, and the lower end of the transmission mechanism is connected with the power assembly. According to the weather monitoring device for marine safety, the solar panel and an internal circuit can be effectively protected conveniently, meanwhile, sea bird excrement on the outer side can be cleaned conveniently, and the buoy can be rapidly disassembled and assembled and can be conveniently recycled and maintained.

The invention relates to an inflatable type marine operation safety guarantee clothing which comprises a guarantee clothing body, wherein an inflating bottle is connected with the back part of the guarantee clothing; a control button of the inflating bottle is located on a front chest position of the guarantee clothing. The guarantee clothing is characterized in that the segmental type design is applied to the guarantee clothing; the guarantee clothing is divided into a neck part, a chest part and a waist part; all the segments are connected through zippers; a collar of the guarantee clothing is arranged as an arc-shaped contracting collar; a waterproof closing opening is arranged on an oxter part of the guarantee clothing. The inflatable type marine operation safety guarantee clothing is scientific and reasonable in structure design, is capable of effectively preventing water and taking operation tools for normally operating and is capable of guaranteeing the maritime safety of the seaman and timely protecting while meeting with mishap.

The present invention relates to a passenger ship navigation management system using AIS two-way communication, and a control method thereof. The passenger ship navigation management system comprises the following components: a control center which receives real-time AIS position information from a plurality of wireless base stations for analyzing a port entering and leaving state of a passenger ship and notifying the current ship navigation state to a passenger ship navigation control center; and the ship navigation control center which is administrated by the port and comprises the following components: a seacoast wireless base station device which transmits the land information that is supplied from the control center to an on-sea terminal, and receives the position information transmitted from the on-sea terminal to the control center; a passenger ship monitor device which is connected with the control center and displays the state of the inward-outward passenger ship on an electronic navigational chart for monitoring the position of the passenger ship in sea navigation, while the passenger ship navigation control center provides information; and an on-sea passenger ship terminal which receives and displays a sea navigation support function with the electronic navigational chart and the on-sea security support short message transmitted from the land, and furthermore transmits the position of the terminal and the ship navigation information to the land.

The invention discloses a ship collision risk early warning method that integrates geometric analysis and data mining, comprising: combining ship AIS data with a quaternary ship field modeling idea to construct a forbidden boundary and an expected boundary in the quaternary ship field. Then, according to the quaternary ship domain model, the ship collision space risk and early warning value are obtained, and the ship collision time risk early warning value is calculated according to the ship collision space risk; the ship collision time risk is obtained by using the instantaneous relative position of the ship. Finally, according to the catastrophe theory, the space-time collision risk and early warning value of two ships are calculated respectively, and the calculation model of space-time collision risk of any ship and early warning value of space-time collision risk of any ship under the multi-ship encounter scenario is constructed. Use edge computing to quickly compare the space-time collision risk of ships and the early warning value of space-time collision risk of ships, and provide support for ship safety supervision and collision avoidance decision-making. This method can not only support ship collision avoidance decision-making and maritime safety supervision, but also reduce and avoid ship collisions and ensure water safety.

The invention discloses a double-unmanned aerial vehicle 3D trajectory design method for maritime safety communication, which takes unmanned aerial vehicle sea area safety communication as a research background, and introduces wireless energy transmission based on time distribution. More practically, the method adds the requirement that the flight of the unmanned aerial vehicle generates the highest horizontal and vertical error; in addition, the invention provides a scene and a mathematical model of 3D dual-unmanned aerial vehicle sea area safety communication, and under the constraints of a plurality of potential unfixed eavesdropping positions, limited unmanned aerial vehicle energy, unmanned aerial vehicle flight maximum speed, unmanned aerial vehicle anti-collision minimum distance and positioning error, the unmanned aerial vehicle safety communication is realized. And flight paths and information energy transmission time distribution coefficients of the unmanned aerial vehicle S and the unmanned aerial vehicle J in the 3D space are planned in a combined manner, and sea area unmanned aerial vehicle-mobile ship secret communication is realized.

The invention discloses a VHF maritime safety communication system based on voice identification and caption display. The system comprises a loudspeaker; a voice preprocessing unit for performing windowing processing on received voice information after performing framing processing, and then performing fast Fourier transform and buffering processing on the windowed voice signal; a storage unit forreceiving the processed voice information transmitted by the voice preprocessing unit and storing the voice in real time; and a voice identification unit for receiving the processed voice informationtransmitted by the voice preprocessing unit, wherein the voice identification unit transmits the text to a display unit to be replayed. The system can convert the currently played audio into the corresponding text through the voice identification technology, and the text can be displayed on a caption displays screen in the caption manner, so that a user can acquire the text information when receiving the audio information, and the content of the maritime communication is enriched.

The invention relates to a rotary type self-unloading conveying belt device for a ship and belongs to ship cargo self-unloading devices. The rotary type self-unloading conveying belt device is composed of a discharging conveying component and a feeding conveying component, wherein the discharging conveying component is arranged on the surface of the bow, and the feeding conveying component is arranged in a cabin. The discharging conveying component comprises a discharging conveying belt and a conveying frame of the discharging conveying belt, wherein the front end of the conveying belt and the front end of the conveying frame of the discharging conveying belt each obliquely stretch out of the bow by 40 meters-50 meters, and a rotary driving component is arranged at the rear end of the conveying belt and the rear end of the conveying frame of the discharging conveying belt. Under the driving of a motor and a gear, the rotary driving component can stretch out of a conveying belt of the ship body and a conveying frame of the conveying belt to rotate by 360 degrees, and therefore a frame body can be rotated to an unloading point during unloading, and the frame body can be rotated to and placed on the top of the cargo hold of the ship body after unloading is finished. Safe traveling is facilitated, and new regulations of the China Maritime Safety Administration are met.

The invention discloses a three-barrel-foundation suction pile supporting box girder anemometer tower and a construction method. The three-barrel-foundation suction pile supporting box girder anemometer tower comprises suction piles, stand columns, a box girder platform, a tower frame and a lifting device, wherein the box girder platform is of a Y-shaped solid structure, the lifting device is connected with the box girder platform through steel strands, the stand columns penetrate through constraint holes of the box girder platform, bottom ends of the stand columns are welded to top ends of the suction piles, top ends of the stand columns are welded to bottom ends of the lifting devices, and the triangular supporting structures at the bottom of the tower are welded to three branches of the box girder platform correspondingly. The three-barrel-foundation suction pile supporting box girder anemometer tower is advantaged in that a suction pile of an anemometer tower enters mud through self weight, the box girder platform is lifted through the lifting device after the suction pile penetrates in place, use of a floating crane and a large barge is avoided, the anemometer tower structure can be applied to sea areas with different depths and different environments only by changing the length and the radius of the stand column and the suction pile, the application range is wide, construction cost is reduced for offshore safety operation, and meanwhile convenience is provided for providing wind characteristic data.

The invention discloses a BDS and VDES fusion networking communication system for maritime safety communication. The system comprises communication terminals which are respectively installed on a plurality of ships and are in wireless connection with a Beidou satellite and a shore base, each communication terminal comprises a power module, and each power supply module is connected with a display module, a central control module, a communication interface module, a Beidou module, an input module and a modulation-demodulation module. VDES communication and BDS communication are integrated through the modulation and demodulation module and the Beidou module, data intercommunication between the VDES and the BDS is achieved by recoding the VDES, the flexibility of VDES communication is improved, the defect of VDES one-way communication is overcome, the capacity of VDES remote communication is improved, and the application field of a Beidou satellite system is expanded.

The invention discloses a method for identifying ship illegal closing AIS behaviors by using high-resolution satellite images. The method sequentially comprises the following steps: 1) acquiring high-resolution satellite images and removing land parts; 2) converting the satellite image with the multi-band characteristics into a grey-scale map sensitive to a water body so as to highlight ships to acquire the geographic position of each ship according to the geographic information of the satellite image; 3) calling AIS data of all ships in the same water area within a time period from t1min to t+ 1min; (4) obtaining the position (t, xAIS, yAIS) of each ship which opens the AIS in compliance at the moment t; 5) matching the ship under the satellite image in the step 4) with the ship which opens the AIS in compliance, wherein the unmatched ship represents the ship which does not open the AIS in compliance; the illegal AIS closing behavior of the ship in a large-range area can be quickly mastered, the maritime law enforcement force can be guided to carry out targeted accurate inspection, and the technical level of maritime safety supervision is further improved.

The invention discloses a marine multi-band multi-standard life-saving radio station and a life-saving method thereof. The radio station includes a casing and the following components arranged in the casing: a Beidou module, which is used for medium and long-distance alarm and / or short message communication and / or positioning at sea ; 9GHz SART module, used for position indication at sea; VHF / UHF voice module, used for radio voice communication with short-sight distance from sea to air; LED flashlight module, used for position indication at sea at night; main control unit, used for each module control; the battery pack supplies power to each module and the main control unit respectively. Through the combination of multi-band and multi-standard, the present invention realizes the integrated technology of portable global marine distress and safety communication within the scope of portable structure, breaks through the limitation that the conventional distress life-saving technology can only perform a single function, and thus improves the safety of life-saving in distress. The success rate has improved the reliability of maritime safety.