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721results about "Open water survey" patented technology

Automatic monitoring and early-warning system for offshore area environment based on Arduino

InactiveCN103512562AReal-time dynamic displayReal-time dynamic queryTransmission systemsOpen water surveyData acquisitionArduino
The invention discloses an automatic monitoring and early-warning system for an offshore area environment based on Arduino. The automatic monitoring and early-warning system comprises a data acquisition terminal node, an aggregation node, a monitoring buoy, a remote database server and an environment monitoring center, wherein a main control board of the data acquisition terminal node and the aggregation node is based on an electronic prototype platform Arduino of an open source, a microprocessor with ATmega2560 as a core is adopted, and the collection, storage, treatment and forwarding of marine environment data and location information of monitoring sites are completed through certain customization. The invention further discloses a method for automatically obtaining the marine environment data from foreign satellite remote sensing sites for integration. The automatic monitoring and early-warning system aims to realize on-line real-time dynamic stereoscopic monitoring and can solve the problem that the conventional marine environmental monitoring technology and method are just established on single-point marine environment data transmission and sampling analysis through acquiring the offshore environment data in a real-time manner and integrating satellite remote sensing data.
Owner:SHANGHAI OCEAN UNIV

Sea observation platform for unmanned and automatic navigation

The invention discloses a sea observation platform for unmanned and automatic navigation. According to upward and downward movement of a water turbine which is arranged under sea and is pulled by a sea floating platform driven by wave, water flow entering into a water turbine casing is enabled to be guided by upper part guide blades and lower part guide blades to act on a one-way rotating rotor, the up and down movement is converted into one-way rotation of the rotor, by the adoption of the rotor, according to a transmission mechanism, and kinetic energy of rotation is transmitted into the rotor of a generation set which is accelerated by a speed shifting mechanism, so that sea wave energy is enabled to be converted into electrical energy; and a power supply system further comprises a solar photovoltaic system, the electrical energy generated by the solar photovoltaic system is taken as an auxiliary power supply for an observation platform, the electric energy converted from the sea wave energy is used as a main power supply for various systems, and a complemented method of the main power supply and the auxiliary power supply is used for providing power source for a propelling system and an intelligent control system. By providing adequate electric energy, the sea observation platform becomes the observation platform with functions of remote control, multi-method communication, visualized remote online monitoring and observing and the like, and the possibility of transparently supervising all sea observation stations in the country is realized.
Owner:GUANGZHOU SUNTRANS MEASUREMENT & CONTROL SYST

Method for fusing ocean current observation data of unmanned undersea vehicle (UUV)

InactiveCN102213594AHigh precisionOutlier smoothing correctionOpen water surveyOriginal dataLongitude
The invention provides a method for fusing ocean current observation data of an unmanned undersea vehicle (UUV), which comprises the following steps of: 1, obtaining ocean current profile data, when the UUV underwater navigates at a certain depth, obtaining an ocean current profile with a certain water layer thickness at the upper part or lower part of the UUV; 2, filtering the ocean current profile data, filtering the obtained ocean current original data, eliminating a wild value, carrying out smooth correction on a measured random error; 3, carrying out time registering on the ocean current profile data, reducing asynchronous data into synchronous data under the same time moment; and 4, reducing position information of the UUV, starting from one known coordinate position of the UUV to reduce a coordinate position of the next time according to the navigation direction, the navigation speed and the navigation time of the UUV at the coordinate position; and 5, fusing the ocean current profile data, converting longitude and latitude position information obtained from the reduction of the position information into ASCII (American Standard Code For Information Interchange) codes, and inserting into corresponding positions of an ADCP (Acoustic Doppler Current Profiler) data packet. According to the invention, accurate and complete ocean current profile information can be obtained under a geodetic coordinate system.
Owner:HARBIN ENG UNIV

Bottom-exploration zigzag-type deep sea submerged buoy system

The invention discloses a bottom-exploration zigzag-type deep sea submerged buoy system which comprises a spherical pressure-resisting cabin and a trigger action mechanism, wherein the bottom of the spherical pressure-resisting cabin of a submerged buoy body is provided with the trigger action mechanism, thus the submerged buoy which is vertically submerged to the bottom of the sea starts the trigger action mechanism at the instant of contacting the bottom, sea bottom sampling is finished and loads are released and thrown, the submerged buoy floats upward so as to complete the acquisition of vertical section information of a sea water column from the sea level to the sea bottom for the deep submerged section floating buoy; the spherical pressure-resisting cabin is formed by the connection of upper and lower semispherical end covers through bolts; the trigger action mechanism comprises an injector-type sampling mechanism, a throwing and loading mechanism and a deep bottom trigger mechanism; the top of the semispherical upper end cover of the spherical pressure-resisting cabin is provided with a thermohaline deep measuring transducer; and cameras are installed in camera holes which are uniformly distributed circumferentially on the semispherical lower end cover. The bottom-exploration zigzag-type deep sea submerged buoy system disclosed by the invention is simple in structure, low in cost and reliable in operation; and complete water column images and water quality information from the sea water level to the bottom of the ocean can be recorded, and substance sampling at the sea bottom can be realized, and a new prospect is developed in the applications of marine environmental monitoring for the deep submerged section floating buoy.
Owner:STATE OCEAN TECH CENT

Apparatus and method for in-situ real-time observation of submarine sand waves

ActiveCN107631720ARealize in-situ real-time observationDocument the migration processOpen water surveyOcean bottomGrating
The invention relates to an apparatus and method for the in-situ real-time observation of submarine sand waves. The apparatus includes an observation system and auxiliary devices. The auxiliary devices comprise an auxiliary ship and a hoisting device; the observation system includes a gravity anchor, a fiber grating floating earth weight sensor, a Kevlar cable, an underwater acoustic releaser group, a lower floating ball bracket, a wave and tide gauge, an upper floating ball bracket, an MRU three-dimensional attitude sensor, a satellite communication machine, an imaging sonar, a solar cell anda main floating body. The principle of the apparatus and the method is characterized in that submarine pressure change caused by the migration of the submarine sand waves is observed, the time interval, elevation and wavelength data of two adjacent extreme submarine pressures are analyzed, and the migration rate of the submarine sand waves is calculated. The method includes the following steps: selection of an observation point and a deployment time, system deployment, recovery, and data processing. The apparatus and the method provide a new idea for the in-situ real-time observation of the submarine sand waves, have the characteristics of simple and easy device, long in-situ real-time measurement period and wide applicable water range, and can realize the in-situ real-time long-term observation of the migration of the submarine sand waves.
Owner:OCEAN UNIV OF CHINA

Method for monitoring river runoff through remote-sensing hydrologic station

The invention relates to a method for monitoring river runoff through a remote-sensing hydrologic station. The method comprises the steps of 1, selecting key fluvial sections lacking measuring stationareas; 2, conducting low-altitude remote sensing retrieval on the information of the fluvial sections lacking the measuring station areas; conducting real-time drone control flight on monitoring points of the fluvial sections selected in step 1, preprocessing the obtained data, extracting earth surface information, obtaining the longitudinal section gradient, the cross section area and the watersurface width of the fluvial sections on this basis, combining ground water level monitoring and underwater topographic surveying and mapping, and utilizing a manning formula for deduction to solve the flow of the monitored section. The method has the advantages that satellite remote sensing and low-altitude remote sensing are coupled, each other's advantages are complemented, and the blank of thelack of hydrologic data is filled up; during emergency management, the real-time river channel segment width is obtained, the river runoff is calculated, the river runoff data is reported in real time, and the runoff monitoring precision is smaller than 8%; the problem that hydrometric stations of an arid region are scarce, and cannot handle flood, water pollution and other emergency events is solved.
Owner:BEIJING NORMAL UNIVERSITY +1

Water supplement and algae control method for large-scale shallow lake water bloom agglomeration water area

The invention discloses a water supplement and algae control method for a large-scale shallow lake water bloom agglomeration water area. The method utilizes a water environment simulation technology, a soft enclosure technology and a dynamic monitoring and scheduling technology and comprises building a lake water environment analogy model, constructing soft enclosure engineering to form a desired water area, carrying out on-line monitoring on the desired water area, building a space-time high precision water environment analogy model of the desired water area, constructing a water quality neural network model and building a flow scheduling system of a water supplement river. The method is a systematic and quantitative technical system which utilizes a river flowing into lake to supply water for a large-scale shallow lake water bloom agglomeration water area so that algal density is controlled. The method builds a defined quantification relationship between supplement water amount and quality and water quality response of a desired water area so that quantitative water environment in the water resource scheduling system is realized, and the problem that the existing water diversion-based alga control engineering measures cannot form a quantitative technical solution so that alga control effects are uncertain or unconspicuous is solved.
Owner:云南省环境科学研究院(中国昆明高原湖泊国际研究中心)

Seabed sand wave geomorphology movement detection method based on MBES (multi-beam echo sounding)

ActiveCN103389077AGuaranteed working conditionMeet the national standard requirementsOpen water surveyOcean bottomSurvey research
The invention discloses a method of hydrographic surveying and charting and submarine topography geomorphologic survey research, and particularly discloses a seabed sand wave geomorphology movement detection method based on MBES (multi-beam echo sounding). The method provided by the invention adopts a decimeter grade measurement accuracy multi-beam sounding technology and a sub-meter grade positional accuracy navigational positioning system, the movement rate and direction of the seabed sand wave geomorphology are obtained through preparation before seabed sand wave detection based on the MBES, the detection of the seabed sand wave geomorphology based on the MBES, a DDM (difference of depth of modulation) construction based on the MBES measured data, secondary detection and treatment as well as sand wave movement rate calculation. The invention provides an exquisite detection scheme of a seabed sand wave movement and a rapid construction method of seabed grids and further provides an exact calculating method of the movement rate of the seabed sand wave, the methods have the important application values for hydrographic surveying and charting, oceanographic survey and seabed scientific research in a seabed high active region.
Owner:SECOND INST OF OCEANOGRAPHY MNR

Underwater 3D reconstruction device and method based on multilayer refractive model of light field

The invention proposes an underwater 3D reconstruction device and method based on the multilayer refractive model of light field, belonging to the research field of computer vision, and the typical application is the high-precision 3D reconstruction in underwater. This device adopts multilayer refractive model of light field to calibrate binocular stereo vision. The center point correspondence algorithm of laser stripe adopts the underwater laser stripe matching algorithm based on the multilayer refractive model of light field and the singular value decomposition method based on the corresponding points under the multilayer refractive model of light field is adopted to calculate the 3D points. The whole system device is composed of two high-speed camera packaging storehouses and laser scanning computing unit packaging storehouses. The packaging storehouse adopts high-voltage resistance design. The high-speed camera packaging storehouse and the laser scanning system and the computing unit packaging storehouse are connected by high-voltage resistance tubes. The high-pressure resistant tube contains a high speed USB3.0 cables connected to the camera and the computing unit. The high speed camera package storehouse is symmetrically distributed at both ends of the device, and the laser scanning computing unit package storehouse is in the middle of the device. The invention can be applied to the high-precision three-dimensional reconstruction in the deep-water area, and the deepest depth can reach 4000 meters below water.
Owner:SHANGHAI UNIV

Deep-sea multifunctional long-term in-situ observation system

PendingCN108248777ARealize in-situ fixed-point observationRealize continuous observationVessel partsOpen water surveyOcean bottomData acquisition
The invention discloses a deep-sea multifunctional long-term in-situ observation system which comprises a mother ship, a hoisting and releasing unit, an instrument unit and an in-situ base. The mothership is connected with an armor cable hoisting transfer component of the hoisting and releasing unit by an armor cable of a winch; a hoisting and releasing butting skirt opening of the hoisting and releasing unit can be butted to a top butting needle of the instrument unit, and the top butting needle of the instrument unit can be grabbed and released by a grabbing assembly of the hoisting and releasing unit, so that the instrument unit can be grabbed and released by the hoisting and releasing unit; bottom slide butting components of the instrument unit can be butted to a base butting skirt opening of the in-situ base, so that the in-situ observation base can be charged by the instrument unit for data acquisition, storage and transmission. The deep-sea multifunctional long-term in-situ observation system has the advantages that different sensors can be carried by the deep-sea multifunctional long-term in-situ observation system, and accordingly long-time in-situ fixed-point continuousmonitoring operation can be carried out on different parameters of deep-sea seabed.
Owner:TIANJIN UNIV

Ultrasonic open channel flow rate comprehensive monitoring instrument and measuring method thereof

InactiveCN101672647AModify working parameters at any timeDisplay working status in timeThermometers using electric/magnetic elementsVolume/mass flow measurementUnderwaterUltrasonic doppler
The invention discloses an ultrasonic open channel flow rate comprehensive monitoring instrument and a measuring method thereof, belonging to the field of metering. The monitoring instrument comprisesan underwater measuring equipment and an abovewater control equipment which are connected with each other by a cable, wherein the control equipment sends measurement command to the measuring equipment; the measuring equipment is used for detecting the flow rate and the liquid level and transmitting the results to the control equipment; and the control equipment stores and displays the received results. The specific steps of the method are explained in specification. The invention utilizes ultrasonic Doppler principle to measure the flow rate and ultrasonic transit-time method principle to measure the liquid level, and can simultaneously measure the water temperature. The invention can modify the working parameters of the instrument at any time, avoids the occurrence of siltation and blockage fault of sensors, displays the current working state timely, alarms in time when finding the fault, is beneficial to reducing the power consumption, and is applicable to measuring rivers or channels with wider widths; furthermore, an split-type ultrasonic wave sensor and a temperature sensor lead independent debugging to be easier, thus being easy to realize standardized production. The invention can be applied to metering the flow rate of open channels, rivers and the like.
Owner:CHINA IRRIGATION & DRAINAGE DEV CENT +2

Multi-beam and low-glancing-angle beam homing method based on laser-point cloud used as constraint

The invention discloses a multi-beam and low-glancing-angle beam homing method based on a laser-point cloud used as a constraint and belongs to the technical field of hydrographic surveying and charting. The multi-beam and low-glancing-angle beam homing method comprises the following steps: firstly, constructing a three-dimensional sound velocity field with a revised shallow layer in a region by using an experience orthogonal function analysis method according to a plurality of sound velocity sections in an offshore region and a surface layer sound velocity value along the near part of a track line, so as to finish the revising of an initial sound velocity of depth measurement data; then, taking a characteristic point extracted by the same-target laser-point cloud as an outermost sound wave beam constraint to obtain coordinate deviation of the characteristic point with the revised initial sound velocity; accordingly calculating an initial rotary angle and an initial amplification coefficient in a low-glancing layer so as to weight and interpolate the rotary angle which corresponds to each residual beam and is more than 60 degrees and the amplification coefficient according to angle linearity; finally, realizing geometrical correction of the beams. With the adoption of the method provided by the invention, the accurate homing of the sound wave beams in shallow-layer seawater is realized, and the problem of seamless splicing of upper and lower point clouds of waterlines is solved.
Owner:SHANDONG UNIV OF SCI & TECH

Artificial upwelling marine environment multi-parameter real-time continuous three-dimensional monitoring system

The present invention discloses an artificial upwelling marine environment multi-parameter real-time continuous three-dimensional monitoring system, which comprises a plurality of same monitoring units, wherein every monitoring unit comprises a mooring line buoy body, an instrument cabin, a data acquisition and control module, a wireless data transmission module, a power supply module, an antenna, a connection mechanism, profile measurement sensor sets, a weight bearing cable line, a transmission cable line, a weight balancing block and a ground monitoring center, wherein the upper portion of the mooring line buoy body is provided with the antenna, the instrument cabin is arranged inside the mooring line buoy body, the data acquisition and control module, the wireless data transmission module and the power supply module are arranged inside the instrument cabin, the lower portion of the mooring line buoy body is connected with the upper end of the weight bearing cable line through the connection mechanism, the lower end of the weight bearing cable line is connected with the weight balancing block, and the plurality of the profile measurement sensor sets are arranged on the weight bearing cable line. According to the present invention, multi-parameter monitoring can be achieved with a variety of sensors, and real-time monitoring can be achieved with the wireless data transmission module.
Owner:ZHEJIANG UNIV
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