721results about "Open water survey" patented technology

The invention provides a method for monitoring hydrology and water quality of a river basin under influence of water projects based on Internet of Things. According to the method, various fixed and flowing sensors are additionally mounted so as to obtain real-time hydrology and water quality data of important water areas, in combination with a video technology, monitoring on a spot environment is achieved, the monitoring information is transmitted through the Internet of Things, intelligent prediction for hydrology and water quality of the river basin is carried out through a neural network, and finally, critical applications, such as current situation assessment, tendency estimation, implementation effect estimation and extreme event handling, are achieved through an expert system. The method provided by the invention can provide real-time, reliable and complete hydrology and water quality information for the river basin under influence of water projects, and can achieve cross-regional and multi-machine type integrated remote protection for the river basin.

The invention relates to a historical data based intelligent early warning system for typhoon and flood, comprising a database system used for storing historical data, predicting data and GIS base map data, a neural network prediction server, a WEBGIS graph display system and a WEB server, wherein the neural network prediction server is used to process the historical data to obtain prediction data which is then stored in the database system; the WEBGIS graph display system displays data in the database system graphically and publishes the data through the WEB server; the WEB server receives prediction request data inform a user client and displays the corresponding prediction result to the user in the form of WEB. Compared with the prior art, the invention has the characteristics of high prediction accuracy, intuitive display of the current storm surge information and forecasting of storm surge information. Besides, the historical data based intelligent early warning system for typhoon and flood can be taken as an auxiliary decision making system for forecasters to forecast storm surges.

The invention belongs to a marine monitoring system device, particularly relates to marine environment monitoring, wave measurement, signal and information processing, communication and information systems, radar technology and GPS technology, discloses a three-dimensional real-time monitoring system for offshore wave parameters, and provides a necessary means and reliable guarantee for reducing noise interference and monitoring offshore wave parameters. The invention adopts the technical scheme that the three-dimensional real-time monitoring system for the offshore wave parameters consists of a wave buoy, a navigation radar, a shore receiving system, a computer and a display, wherein the wave buoy is used for acquiring wave information of a position and emitting the wave information through radio frequency; the wave buoy comprises a GPS sensor wave-measuring unit and an acceleration sensor wave-measuring unit; the shore receiving system is used for receiving the wave information of the wave buoy and transmitting the wave information to the computer; and the computer is used for data processing and numerical analysis. The system is mainly applied to marine monitoring.

A system and method of providing aerial navigation. Techniques are described for receiving global positioning system data, receiving local positioning system data such as instrument landing system data, generating a virtual target flight path using the global positioning system data and the local positioning system data, and presenting a virtual target flight path indicator corresponding to the virtual target flight path. In one implementation, the system includes a user interface, a global positioning component, a local positioning component, and a processing system.

Provided is a method of carrying out an underwater video survey of a scene, the method operating in an underwater imaging system comprising a first camera module, a second camera module and a lighting module to provide a plurality of illumination profiles, wherein the method comprises repeating the following steps at a desired frame rate: the first camera module capturing a first image of the scene, where the scene is illuminated according to a first illumination profile; and the second camera module capturing a second image of the scene, where the scene is illuminated according to a second illumination profile; characterised in that the first camera module is a HD colour camera module and the first illumination profile provides white light suitable for capturing a HD image; and the second camera module is a low light camera module, and the second illumination profile is suitable for use with the low light camera module.

The present invention relates to an autonomous underwater vehicle (“AUV”) for monitoring underwater fluid currents by detecting electrical currents induced by the flow of a conductive liquid through the Earth's magnetic field. More particularly, the present invention relates to the gathering of data related to underwater fluid currents and the control of AUV motion during data gathering.

An underwater sensor device comprises a submersible housing including one or more housing components, one or more sensors for monitoring and collecting water characteristics, a controller for controlling operations of the one or more sensors and an graphical user interface mounted to the housing that displays the water environmental data. The housing defines a channel that extends through one of the housing components, and at least one of the sensors is mounted to the housing and extends into the channel. The controller is disposed within the housing and is operatively connected to the one or more sensors.

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.

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.

A disclosed fluid purity monitoring system employs a network of preferably information-transmissive cables fixed in place within a body of fluid. Sensors sensitive to fluid impurities are supported at various places on the network. Data representative of impurity levels transmits to a collection point via the same cables at which the sensors are supported. One system employs at least two pluralities of sensors sensitive to different fluid impurities. Another system employs electrically conductive cables fixed in place substantially in a common plane, with some cables oriented substantially parallel to each other and intersecting other cables. In that system, the data transmits to the collection point via a separate electrical circuit for each one of the sensors. Each circuit includes a series connection of the pair of cables that intersect proximate to the sensor's support point on the network. Advantageous variations and methods are also disclosed.

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.

The invention provides measuring device and method of dynamic ocean waves. The device comprises two pressure sensors, a temperature sensor, an acceleration sensor, an inclination angle sensor, a signal conditioning unit, an AD conversion unit, a data storage unit, an RS485 communication unit, a power management unit and a digital signal processor. The invention has the core that the two pressure sensors are utilized for detecting the pressure in water, the depth at the zero crossing moment is derived according to the pressure-in-water computing formula described by a Bernoulli equation in fluid mechanics, the depths at other times except the zero-crossing moment are continuously estimated according to the data of the acceleration sensor and an angle sensor, the wave number and the wave height are computed according to the computing relational expression of the wave number and the wave height at the non-zero-crossing moment. The technical method not only has novelty and creativity, but also has simple structure and convenient manufacture and can be widely used for underwater robots, communication buoys and other diving sounding systems.

The invention discloses a river water level monitoring method based on monocular camera, which is an information processing method belonging to the video monitoring field, that is using light reflection characteristic difference between the river plane surface and the bank plane surface to determine water level height with horizontal pixel projection algorithm (HPIP) for video collected images. The method includes the steps: (1) using affine transformation for executing geometric correction to image; (2) executing histogram equalization process for video image greyscale; (3) determining water level height with horizontal pixel projection algorithm; (4) real time and robust tracking water-level fluctuation. The invention has the advantages of easy realization, strong robustness, high reliability, high real time property or the like, and can provide real time dependable information for hydrology monitoring.

A phase-change memory cell including, between two electrical contacts, a portion in a memory material with amorphous-crystalline phase-change and vice versa, as a stack with a central area located between two outmost areas. An interface, inert or quasi-inert from a physico-chemical point of view, is present between the active central area and each passive outmost area. Each passive outmost area is made in a material having a melting temperature higher than that of the material of the active central area.

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.

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.

The invention relates to a real-time transmission undersea buoy device, to timely solve that the data measured in the water by the undersea buoy is transmitted to a shore station, and the marine observed data and information can be obtained without recovery, (a) the main floating body system (b) anchored mooring and recovery system, and (c) the surface buoy system. The invention solves that marine measured data cannot be obtained in a timely manner in the past.

The invention discloses a measuring method for inversing reservoir feeding flow procedure, comprising the steps: step I, performing observation and sampling to obtain the information of reservoir water level and discharging flow via a water level in front of the reservoir dam; step II, building a data assimilative state model and an observation model according to the information obtained in the step I; and step III, ascertaining the reservoir feeding flow procedures by a data assimilation algorithm according to the state model and the observation model obtained in the step II. The method disclosed by the invention can be used for ascertaining the reservoir feeding flow; compared with the prior art, the method disclosed by the invention can ensure smooth reservoir feeding flow, and avoid exceptional data like negative values and the like of the flow; the method also can supply the reservoir feeding flow procedure of minute time step, so as to reflect the flood peak information more truthfully; in addition, the method disclosed by the invention has low precision requirement to the water level gauge on the reservoir dam, so that the building and management costs of water level measurement stations are saved.

The invention relates to a buoy device for marine ecological monitoring and particularly relates to a buoy device with an image collection function, belonging to the technical field of marine ecological monitoring. The buoy device structurally comprises a buoy mother body, a buoy son body and an anchor fixing device, wherein the anchor fixing device is of a suspended cable structure, the lower endof the buoy mother body is connected with the upper end of a suspended cable, the buoy son body is arranged on the suspended cable and can move up and down along the suspended cable, data is transmitted between the buoy mother body and the buoy son body through a data communication line, and the buoy mother body is in data communication with a remote station through a satellite data communicationmodule. The buoy mother body and the buoy son body are separated, and the buoy son body moves up and down on the suspended cable, so that various monitored data at different depths in ocean can be conveniently collected, marine ecological parameter information at different water depths can be collected, and the real-time data transmission can be realized.

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.

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.

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.

The invention provides a flood defense rainwater condition automatic monitoring system and a measuring method thereof. The flood defense rainwater condition automatic monitoring system comprises a dispatching center, a dispatching branch center, a communication network, a cloud computing end, a switching terminal, a mobile terminal and a rainwater condition automatic monitoring station. The communication network comprises a wired communication network and/or a wireless communication network. According to the flood defense rainwater condition automatic monitoring system and the measuring method, the structure and function are diversified, information can be shared and integrated for application, staff do not need to water over the monitoring station, the structure is simple, cost is low, sensitivity is high, and environmental suitability is high.

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.

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.

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.

A system for monitoring subsidence and/or rising of a waterbottom has pressure sensors along the interior of a sealed tube that rests on the waterbottom and is filled with a low pressure liquid so that subsidence or rising of the waterbottom can be deduced from subsidence and/or rising of a section of the tube and associated pressure variations measured by the sensors due to variation of the hydrostatic pressure of the liquid in the tube.

The tube interior is divided into segments by valves during descent to protect the sensors against hydrostatic pressure of the liquid within the tube during installation.

The use of a low pressure liquid in the tube allows the use of sensitive pressure sensors which are able to monitor pressure variations of ˜0.001 Bar associated with a waterbottom subsidence of ˜1 cm, at a waterdepth of >km where the ambient water pressure may be >100 Bar.

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.

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.

The invention discloses an oceanic internal wave prewarning method based on online monitoring data. The method comprises the following steps: (1) data processing, namely acquiring ocean current flow rates Ft of a point A which is a certain distance from a working platform at different times t and different number of layers l, and successively performing de-noising processing and background flow removing processing on the acquired ocean current flow rates Ft to obtain ocean current flow rates Ft,l''; (2) judging the ocean current flow rates Ft,l'', namely when the ocean current flow rates Ft,l'' meet the conditions of internal waves, judging that the internal waves appear, and when the current flow rates Ft,l'' do not meet the conditions of internal waves, judging that the internal waves do not appear; and (3) if the internal waves appear, outputting internal wave information and alarming at the same time. The invention also discloses a prewarning system employing the method. The scheme is low in cost, and can be used for realizing internal wave monitoring of a fixed point for a long-term continuously, and realizing automatic internal wave judgment and precise pre-warning within 2-8 hours.