1588results 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.

Watershed hydrology analysis and management process and system with a network of weather stations and artificial drainage systems with artificial and natural reservoir management through locks and pumping stations. It evaluates potential hydrologic risk in each area and analyses the possible consequences of future precipitations using simulations. To make the simulation, it calculates hydrographs for each sub-basin, streams and rivers in the basin. It simulates the behavior of the basin under different scenarios corresponding to different types of management of the operation of locks and / or pumps and compares its results in terms of loss of flooded area, economic loss in each area, loss for flooding of urban areas, etc. Optimization of the simulation through artificial intelligence (AI, meta-heuristic algorithms, neural networks, etc.) allows it to act as a search engine to find better solutions and the best configuration of resource management that allows minimizing the socio-economic impact on each basin.

Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors. The watermarks are used to track metadata, provide serialization and forensic tracking, help auto-correlate image data, and quilt together related imagery. One aspect of the present invention contemplates that incoming imagery is automatically geo-referenced and combined with previously collected data sets so as to facilitate generation of revised composite maps. Another aspect of the present invention associates geovector information with a photograph via a digital watermark.

Digital watermarking technology is used in an image management system. Images are uniquely identified by digital watermarks. The images are stored so as to be indexed according to their unique identifiers. In the preferred embodiment, related images are linked together by the unique watermark identifier. The unique watermark identifiers are also used to manage metadata, and provide forensic tracking.

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 lake wetland flood remote sensing monitoring method based on a model comprises the steps that: (1) the lake wetland time series multi-source remote sensing image data is acquired; (2) the water body in the remote sensing image is (semi-) automatically extracted; (3) the boundary is detected and confirmed between the water and the land, and the practical water area is calculated; (4) the data of the water area and the water level estimated by the remote sensing is carried out nonlinear statistic to modeling; (5) the acquired micro wave remote sensing image in the flood period is used, the established model is compared and validated, and the model is corrected; (6) based on the established high accuracy water area water level area distribution math model and the common remote sensing change monitoring method, the practical measured water level is combined with the acquired remote sensing image, the continuous real time monitoring to the wetland flood dynamic change is achieved. The invention can be compensated each other with a common earth surface environment change multi-time phase remote sensing image measurement method, and the invention has the important roles to the dynamic change monitoring of the wetland flood and the wetland process modeling research.

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 a water level-flow speed-flow rate monitoring integrated device, a water level-flow speed-flow rate monitoring system and a water level-flow speed-flow rate monitoring method. The device comprises a radar water level measuring module, a radar flow speed measuring module, a wind speed measuring module and a flow rate calculating module, wherein the radar water level measuring module, the radar flow speed measuring module and the wind speed measuring module are connected with the flow rate calculating module respectively; the radar water level measuring module is used for measuring the real-time water level data of a river course / channel in a non-contact form; the radar flow speed measuring module is used for measuring the real-time surface flow speed data of the river course / channel in the non-contact form; the wind speed measuring module is used for measuring real-time wind speed data to correct a flow speed of a water surface; the flow rate calculating module is used for calculating to obtain the size of the flow rate of a controlled section of the river course / channel at a current moment by combining with an input relevant parameter of the controlled section of the river course / channel according to the water level data, the flow speed data and the wind speed data. The device can be used for monitoring the water level and the flow speed of the river course / channel in real time, and moreover, can be used for realizing monitoring the flow rate in real time.

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 an establishing method of an uncertainty mid-term and long-term hydrological forecasting model, comprising the following steps: using a wavelet analysis (WA), an artificial neural network (ANN) and a hydrological frequency analysis (HFA) in combination to establish the uncertainty mid-term and long-term hydrological forecasting model; dividing the original sequence into two sections of a main sequence and a random sequence on the basis that WA is used to reveal multiple time dimension variation characteristics of the hydrological sequences, adopting ANN for analogue forecasting on the main sequence and hydrological frequency analysis on the random sequence and overlapping the results of the two sections to be a final forecasting value. The model is used for the mid-term and long-term hydrological forecasting in the Yellow River estuary area, and compared with the traditional method, the results show that the model can reveal the time and frequency structures and variation characteristics of the sequences, has high forecast value result precision and acceptance rate, can quantitatively analyze and describe the impact of hydrological uncertain factors on the forecasting result and can obtain the analogue forecasting value of different frequencies to corresponding hydrological sequences.

The invention provides a remote sensing evaluation method of lake water reserves based on multispectral images. The remote sensing evaluation method includes: according to lake water body spectral response characteristics in different bands of multispectral remote sensing images, extracting water body indexes which reflect lake water surface distribution characteristics; according to the extracted water body indexes, obtaining lake water body boundaries, giving actually-measured lake water level information to the lake water body boundaries, and generating lake equal water level line data sets according to different periods of the lake water body boundaries; according to the lake equal water level line data sets, simulating lake underwater topography; and calculating the lake water reserves in different periods according to the simulated lake underwater topography and actually-measured water level data. According to the remote sensing evaluation method, the lake underwater topography is monitored through utilization of multispectral satellite remote sensing data, the utilized satellite remote sensing data substantially can be obtained for free, and the remote sensing data has the advantages of wide space coverage areas and rapid refreshing speed, so that compared with conventional field actual-measurement methods, the remote sensing evaluation method provided by the embodiment of the invention has the advantages of low monitoring cost, convenient refreshing, and possibility of wide-range popularization and application.

The invention discloses a submersible buoy for ocean observation, which comprises a cable arranged vertically, and a first temperature-salt chain, a second temperature-salt chain, a first microscale fixed-point turbulence meter, a second microscale Scale fixed-point turbulence meter, main floating body and seat body; the seat body is arranged on the top of the cable, and the seat body is equipped with a plurality of solar cells as power supply; the first temperature-salt chain and the second temperature-salt chain are both Including temperature instrument, temperature and depth instrument and temperature and salt depth instrument, Doppler flow velocity profiler is installed on the main floating body, reciprocating micro-scale turbulence profiler is installed in the middle of the cable, and high-precision temperature and salt depth instrument and single-point type are installed in the lower part. Current meter; the side wall of the main buoy is provided with a plurality of satellite communication buoys for transferring observation data, and the satellite communication buoys are connected to the main buoy through a timing release device; the submersible buoy for ocean observation can realize the Observation data can be obtained regularly before recovery, which is very practical.

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.

The invention relates to float type automatic monitoring equipment of rivers and lakes of a depopulated zone. The equipment comprises a floating ball, a multifunctional mooring cable and an underwaterdevice, wherein the floating ball, the multifunctional mooring cable and the underwater device are connected in sequence; communication equipment is arranged at the top of the floating ball, and a flow speed sensor, a water temperature sensor and a water quality sensing device are arranged at the bottom of the floating ball, so that signals can be effectively transmitted and online monitoring ofwater quality, water flow speeds and water temperature of water bodies of the lakes; the outer part of the floating ball is composed of a solar cell panel and self-powered and low-power-consumption operation can be realized; a water surface pressure sensor and a water bottom pressure sensor are arranged so that relative water levels of the lakes are measured through pressure difference and the influences, caused by environment factors including atmospheric pressure changes and the like, on the measurement of the water levels are overcome.

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.

An in-situ automatic monitoring complete technology method for an underwater groundwork comprises a section surface subsidence monitoring method by multiple fixed inclinometers; a multipoint hydraulic difference surface subsidence monitoring method; a layered soil mass subsidence monitoring method; a pore water pressure monitoring method; and a horizontal and vertical displacement monitoring method; an automatic monitoring technology with a monitoring and control system disposed in the deep water sea bottom for long period. The invention can successfully and conveniently perform the in-situ monitoring of the underwater groundwork without disposing waterborne bases, arranging maritime platforms and passing through buildings; can perform full-course monitoring on the engineering, perform underwater automatic monitoring and real-time monitoring data transmission, in particular monitor continuously in the typhoon period; the automatic monitoring can save monitoring workers and cruise time; the automatic monitoring instruments are all disposed underwater, thereby having little influence on construction and decreasing instrument damage rate; the automatic monitoring can perform on-time on-point test to eliminate man-made reading error, and make the reading accurate, quick and precise.

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 discloses a marine environmental monitoring system based on unmanned ship formation motion. The system comprises multiple unmanned ships loaded with unmanned ship formation motion control systems, marine environmental monitoring sensing systems and wireless ZigBee communication systems and a remote marine environmental monitoring system. Each unmanned ship formation motion control system drives a corresponding unmanned ship motor in a set unmanned ship formation motion mode to form a shipping formation column and each unmanned ship moves according to the corresponding shipping track. Each marine environmental monitoring sensing system sends acquired marine environmental monitoring data to the remote marine environmental monitoring system in real time. Each wireless ZigBee communication system is connected with the corresponding unmanned ship and the remote marine environmental monitoring system. The remote marine environmental monitoring system forms a visual interface in real time and can remotely control each unmanned ship. By the adoption of the system, movable environmental monitoring, positioning and display comprehensive monitoring can be conducted according to the characteristics of abruptness, uncertainty and the like of the marine environment.

The invention discloses a method for measuring simulated seabed terrain based on an active stereo vision technology and measuring equipment. By the stereo vision technology, a binocular camera is arranged on the outside of an experimental trough, and seabed terrain changes are measured contactlessly through glass sidewalls of the experimental trough. Partial flow field will not be disturbed, and synchronous acquisition of the whole simulated seabed terrain can be realized. According to the invention, the active vision technology is used in underwater measurement. That is to say, by the utilization of auxiliary structured light irradiating underwater terrain through the glass sidewalls of the experimental trough, dense structured textures or dot arrays are formed on the terrain such that the camera can distinguish more easily. Meanwhile, quantity of terrain characteristic points is also increased. With the combination of the high-resolution camera, high-precision terrain data can be obtained. By the adoption of the method provided by the invention, noncontact, synchronous and high-precision measurement of the simulated seabed terrain can be realized, and corresponding problems existing in the prior art are solved.

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.

This invention disclosed a monitor device used in ocean perambulation and a method. It can be used in measuring acoustics parameters of sediment precisely. It can collect data without altering the sediment and the environment. It has advantages compared with traditional methods. It can be applied to research sound velocity of sediment, sound attenuation, dispersion and reflection character of seabed interface, acoustics geotechnics character of sediment, natural gas hydrate and aeration zone in shallow sea, etc.

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.