205 results about "Ocean observation" patented technology

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 an observing method of a small-sized underwater autonomous navigation observing platform, and the observing method comprises the following technical steps of: measuring a ladder-shaped section and continuously measuring a sitting bottom. The method comprises the following steps of: autonomously navigating according to a ship route set by a deck unit; carrying out ladder-shaped section measurement; measuring an ocean current section, a temperature, a conductivity section and a water depth change; reaching to a set place and automatically sinking to carry out fixed point sitting bottom continuous measurement; measuring the ocean current section, a sea level, a sea bottom temperature and the conductivity; after finishing set measuring time, automatically floating up; and measuring in a returning process in a same manner and transmitting obtained data to the deck unit through a satellite communication device. According to the observing method of the small-sized underwater autonomous navigation observing platform, the requirements of an ocean observation standard are met by the ladder-shaped section measurement and the sitting bottom continuous measurement, so that the standardization and practical applicability of observed data are realized.

The invention belongs to the field of an ocean element monitoring technology, and particularly provides an anchoring ocean observation and research buoy laying system and method based on a small-sized ship, which solves the problem of high laying cost of a large-sized ship. The laying system comprises a small-sized ship, a movable pulley, a fixed pulley, a winch on the small-sized ship, a towing rope, an anchoring weight fixing rope, a releasing rope and the like. The laying method comprises the following steps: a. carrying out a launching test of buoys; b. fixing anchoring weights and arranging anchor chains on the small-sized ship; c. towing the anchoring ocean observation and research buoy system to a target sea area; and d. laying the anchoring ocean observation and research buoy system in the target sea area. When the system provided by the invention is laid in the target sea area, the winch is matched with a pulley group composed of the movable pulley and the fixed pulley to laythe anchor chains I, II and III and anchoring weights section by section through the releasing rope, thereby finally finishing the laying of the whole buoy system. By adopting the invention, a large-sized ship is not needed, and the system provided by the invention is safe and reliable.

The invention discloses underwater glider wings and a control and working method thereof, and belongs to the technical field of underwater vehicles. The glider wings comprise angle adjustable swingingwings, a wing swinging joint-swing mechanism, a wing swinging driving mechanism, a carrying gas-tight silo, turbo type power generation devices, an electromagnetic power generation mechanism, a working mode switching mechanism, a permeable cabin and a control and drive mechanism. According to the underwater glider wings and the control and working method thereof, the functions of a gliding mode,a precise observation and movement power generation mode and a sea surface wave power generation mode are realized by driving the angle adjustable swinging wings by the wing swinging driving mechanism. The working states of gear meshing and force discharging in an underwater glider are realized by arranging the working mode switching mechanism, and at the same time, a current single gliding mode of the underwater glider is higher in work efficiency and better in observation accuracy by being matched with the control mechanism, and the cruising ability of the underwater glider is further enhanced. A solid foundation for the long-voyage large-scale ocean observation technique and the low-speed accurate observation in small oceans is provided.

The invention discloses a buoy device based on marine environment monitoring, belonging to the technical field of ocean observation equipment. The buoy device comprises a floating body, anti-rolling mechanisms are connected around the floating body through swing arms, a casing is arranged at the lower part of the floating body, the end, connecting with the floating body, of the casing is sealed, and the other end is provided with an opening, a water quality detector is installed in the casing, a water pipe is connected between the floating body and the casing in a penetrating manner, a water pipe water inlet is located in the side wall of the floating body, and a water outlet is located in the inner bottom of the casing. The buoy device has the effects of anti-rolling, buffering and automatic centralization, and the self-cleaning degree of the buoy is high and the buoy is suitable for complex marine environment.

The invention relates to the technical field of marine engineering geology and seafloor in-situ long-term observation, and particularly discloses a seafloor static penetration device based on an oceanobservation probe rod and a penetration method of the seafloor static penetration device. The seafloor static penetration device based on the ocean observation probe rod comprises a probe rod vertical frame, an outer clamping ring and a base, and is characterized in that a probe rod positioning device and a pressing cap type structure are installed on the outer clamping ring, the base comprises an upper bottom plate, a lower bottom plate and a separation plate located between the upper bottom plate and the lower bottom plate, a battery bin, a driver bin and a motor which are connected with one another are installed on the upper bottom plate, the motor is connected with the pressing cap type structure through a driving rope, and the probe rod is correspondingly clamped and fixed between the outer clamping ring and the base. According to the seafloor static penetration device based on the ocean observation probe rod and the penetration method of the seafloor static penetration device, structure design is reasonable, the performance is stable, the working efficiency is high, the size of the seafloor static penetration device is small, stable and vertical penetration with the constantspeed of the seafloor observation probe rod is realized, the penetration efficiency is high, the penetration depth is large, and the quality of seafloor observation parameters is guaranteed.

The invention belongs to the technical field of ocean observation, and particularly relates to a power self-matching voltage stabilization type constant-current underwater power supply which convertsconstant current provided by a shore-based constant-current source through a submarine cable into constant voltage required by an electric load and supplies power to the electric load. The constant-current underwater power supply comprises an input detection circuit, a power conversion circuit, an output current detection circuit, a load (R3) and a power matcher circuit, one end of the input detection circuit is connected with a shore-based constant current source through an external submarine cable, the other end of the input detection circuit is connected with the input end of the power conversion circuit and the input end of the power matcher circuit, and the output end of the power conversion circuit is connected with a series circuit formed by connecting the output current detection circuit and an external electric load in series. And the output end of the power matcher circuit is respectively connected with a load (R3) and an output current detection circuit.

The invention discloses an ocean observation network system and method based on an EC-REST system structure. Edge sensing equipment of a data source for sensing ocean observation data performs preliminary processing and storage on the collected data; the data acquisition layer is used for acquiring and transmitting ocean observation data sensed by a data source and transmitting the acquired data to a data storage layer; the data storage layer preprocesses the data transmitted by the data acquisition layer by utilizing an edge gateway and then uploads the data to the data processing layer; thedata processing layer realizes unified and coordinated migration and scheduling of resource loads such as computing tasks among sensing devices deployed in a distributed manner and between the sensingdevices and the edge gateway through an EC-REST architecture for data uploaded by the edge gateway; and the data application layer applies the result processed by the data processing layer. Interactivity and resource load balance of each sensing device in the ocean observation network are maintained, and high-efficiency and low-energy-consumption real-time observation of massive heterogeneous data in the ocean is realized.

The invention relates to an intelligent extraction method of marine internal temperature and salt information based on multi-source satellite remote sensing. the method includes: Using multi-source sea surface remote sensing data, Combined with the measured data of Argo buoy in the ocean, Using XGBoost advanced machine learning method to establish the intelligent remote sensing inversion model based on multi-source satellite observation to inverse the temperature and salinity structure of the ocean interior. The inversion effect is very good, and the spatial distribution and characteristics oftemperature and salinity information in the global ocean interior can be displayed intuitively and accurately. The invention constructs a new method of ocean remote sensing oriented to the interior of the sea, The inference of the key dynamic parameters from the sea surface satellite observations can broaden the ocean observation range, which improves the resolution of the ocean internal information observation, makes up for the sparsity and deficiency of the ocean internal buoy observation, and provides a new method for the ocean internal observation, which has a high application value in the field of ocean remote sensing.

The invention relates to the technical field of ocean observation, in particular to a high-precision real-time monitoring system for long-distance submarine cable positioning and deformation. The high-precision real-time monitoring system includes an upper monitoring computer. The upper monitoring computer is located on the shore and connected with a photoelectric converter. The monitoring systemincludes a flexible circuit board, a plurality of bunchy MEMS module components serially connected through 485 bus connecting lines are welded on the flexible circuit board, each MEMS module componentinclude a TTL to 485 bus module and a MEMS acceleration sensor module, four-wire system 485 connectors are also provided between the 485 bus connecting lines and the MEMS module components, the 485 bus connecting lines are connected to a central controller, and the central controller is connected to an electro-optic modulator. The high-precision real-time monitoring system can realize real-time monitoring of positioning and deformation of submarine cables and remote real-time positioning and self-checking functions of the submarine cables and can be used for improving the stability and faultrepair ability of the submarine cables.

The invention discloses an elastic heat dissipating bracket for a deep-sea seal cavity, comprising two end covers of supporting frame fixing plates, four the supporting frame fixing plates, four bottom plates of spring seats, four heat dissipating boards, four supporting frames of the heat dissipating boards, the spring seats and springs. Compared with the mode of traditional heat dissipation depending on the end covers, the effective utilization space of the end covers is released, heat dissipating area is enlarged, and heat conduction path is shortened; and compared with filling heat dissipating oil, the influence of oil liquid on electrical components and increased pressure of oil liquid caused by hot expansion are avoided. The specific elastic characteristics of the elastic heat dissipating bracket solves the problem of poor contact of a heat conductive surface owing to permanent deformation of the bracket in the cavity resulted from micro-deformation of the cavity caused by hydraulic pressure. The elastic heat dissipating bracket can enlarge the scope of application of underwater power equipment, and promote scientific and technological development such as exploration and development of underwater and even deep-sea resources, ocean observation and research, underwater operation and the like.

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.

The invention relates to the technical field of ocean observation, in particular to an ocean wave observation buoy system. The ocean wave observation buoy system comprises a server and a plurality ofbuoys, wherein the buoys comprise shells, three-axis accelerometers, communication modules, memories, positioning modules, batteries and MCUs; the shells are sealed shells drifting along waves on thesea surface; the three-axis accelerometers, the communication modules, the memories, the positioning modules, the batteries and the MCUs are all installed in the shells; the tri-axial accelerometers,the communication modules, the memories and the positioning modules are all connected with the MCUs; and the communication modules establish communication connection with the server. The ocean wave observation buoy system has the real effects that a three-dimensional motion track of buoy drifting with the sea waves is obtained by combining data of the positioning modules with the three-axis accelerometers, after sufficient data is accumulated, the wave height, wave direction and wave period data in the sea area can be mastered, and the observation task is completed.

The invention discloses an offshore floating integrated facility platform driven by green energy, including a main body of a semi-submersible platform, a sustainable power supply system, an ocean observation system, an integrated test system, a connection system, an ocean communication and relay system, a freshwater system and an organic waste recycling and energy utilization system which are installed on the main body of the semi-submersible platform. The offshore floating integrated facility platform driven by green energy takes the large-scale semi-submersible wave energy power generation platform as a carrier to construct an offshore sustainable power supply system composed of wave energy + solar energy + energy storage + standby diesel generator set, is equipped with seabed, underwater, water surface and sky detection equipment and instruments, and is equipped with general and special equipment to form a complete observation equipment launch, operation, recovery support system, toensure the safety and efficiency of scientific research equipment in a variety of operating conditions; and the offshore floating integrated facility platform driven by green energy is integrated with natural gas hydrate, hydrology, meteorology and other research cabins to form an integrated ocean laboratory, and has open sea test conditions for long-term scientific research.

The invention relates to a seabed in-situ real-time observation system and method, which are used for achieving ocean in-situ long-term real-time multi-parameter observation. The seabed in-situ real-time observation system comprises a seabed observation master control system, a sea surface relay transmission buoy system, a remote monitoring system, an underwater acoustic communication machine anda satellite communication machine, wherein the seabed observation master control system and the sea surface relay transmission buoy system carry out wireless communication through the underwater acoustic communication machine; the wireless communication is carried out between the sea surface relay transmission buoy system and the remote monitoring system through the satellite communication machine. According to the system, observation can be carried out in different modes such as shore station remote real-time monitoring, ship-borne remote real-time monitoring, ship-borne operation real-time monitoring and the like according to actual application requirements, different ocean sensors can be mounted in a seabed observation platform based on ocean observation and engineering needs, thereby transmitting to the remote monitoring system through the underwater acoustic communication and the satellite communication, so that the multi-parameter in-situ long-term real-time observation of the observation point is achieved, and meanwhile, the networking type observation can be carried out.

A multi-node data synchronous acquisition system and a method for real-time monitoring of underwater surface deformation. The system includes at least four sensor arrays, where each of the sensor array consists of a plurality of ribbon-like rigid substrates connected by movable joints. On each section of rigid substrate, three sensor units are respectively connected to a slave station data acquisition unit through cables. The slave station data acquisition unit is connected with a central controller through a cable. The central controller includes a compressive cabin outside and an embedded controller and a power supply inside. Each slave station data acquisition unit acquires data from an MEMS attitude sensor and then transmits it to the embedded controller. The present invention may realize synchronous acquisition of underwater or even underwater multi-node data, implement three-dimensional surface reconstruction, and may be used for improving the ocean observation capability.

The invention discloses a buoy for ocean observation. The buoy comprises a buoy body, a water storage bin, a fixing anchor and an equipment mounting frame, a solar cell panel is fixedly arranged on the surface of the upper end of the buoy body, the equipment mounting frame is fixedly arranged at one side of the solar cell panel, a main controller is fixedly arranged at the lower end of the inner side of the equipment mounting frame, a GPS positioner is fixedly arranged at the upper end of the main controller, a weather monitor is fixedly arranged on the surface of the upper end of the equipment mounting frame, a signal lamp is arranged at one side of the weather monitor, and a wireless communicator is arranged at one side of the signal lamp. A chain is dragged to drag a balance weight shovel head and side wing pieces on the underwater moving surface of the fixing anchor to deeply shovel into soil under the pulling force to achieve the fixing effect, and when the fixing anchor is pulled, a sliding block slides on the surface of a sliding groove and slides towards the tail end with small acting force, upward lifting and pulling are facilitated, and the situation that shoveling is toodeep, and pulling is strenuous is avoided.

The invention discloses a self-balancing descending type seabed base, which is characterized by comprising a seabed base and a recovery instrument floating body, wherein the seabed base comprises a base body and a plurality of layers of guide plates, the guide plates are annularly distributed on the base body at intervals, and the guide plates are connected and fixed on the base body through reinforcing ribs; a cylindrical cavity with an upward opening is formed in the upper middle portion of the seabed base, the recovery instrument floating body is installed on the cylindrical cavity formed in the upper portion of the seabed base, and a closed cabin is formed between the recovery instrument floating body and the cylindrical cavity of the seabed base. Three ocean observation instruments including ADCP, CTD and a releaser are arranged in the instrument recovery bin. Water changing holes are designed on two sides of the instrument recovery bin, and a rope disc is arranged on the lower portion. The self-balancing descending type seabed base has the functions of net disengaging prevention, silting prevention, biological attachment prevention and self-balancing vertical descending landing, the laying steps are simplified, the observation success rate is increased, and the self-balancing descending type seabed base can be used for ocean element observation of sea areas such as bays,estuary, continental shelving and continental slopes.

The invention discloses a wave video measuring device and method in the technical field of marine observation. The device comprises a video image acquisition module, a data transmission module, a datareceiving and processing module, a wave parameter display module, a floating body moored on the sea surface and a calibration plate. An existing wave measurement method is improved. A left industrialcamera and a right industrial camera are used for synchronously collecting water surface preset floating body motion sequence images. An image recognition processing method is used for extracting animage coordinate system floating body center, three-dimensional coordinates in a floating body world coordinate system are calculated on the basis of a binocular vision photogrammetry principle, and then wave parameters are inverted according to sea wave observation related requirements in ocean observation standards. The invention has the advantages of being convenient to operate, simple and reliable in algorithm, low in cost and high in measuring precision, low-cost, high-precision, large-range and long-time continuous measurement of wave parameters can be achieved, and the measuring deviceand method have wide application prospects in the field of ocean wave observation.

The invention discloses a small autokinetic-movement ocean observation platform shell. The small autokinetic-movement ocean observation platform shell comprises a front open-water cabin section, a rear open-water cabin section and a middle pressure-resistant cabin section, wherein the front open-water cabin section is formed by straight-opening positioning and matching of a nasal-tip elliptic shell (2) and an ellipsoidal end cover (4); the middle pressure-resistant cabin section is formed by straight-opening connection and positioning of the ellipsoidal end cover (4), a front pressure-resistant shell (6), a front rib ring (7), a middle pressure-resistant shell (8), a rear rib ring (10), a rear pressure-resistant shell (11) and a hemispherical end cover (13) from front to rear in sequence; the rear open-water cabin section is formed by straight-opening positioning and matching of the hemispherical end cover (13), a tail-part elliptic shell (14) and a tail-tip shell (16); the front open-water cabin section, the rear open-water cabin section and the middle pressure-resistant cabin section are tightened, connected and fixed respectively by adopting middle screws.

The invention relates to an automatic ocean observation device which comprises a main frame connected with a group of floating balls, wherein a power supply, a solar cell panel, an electric control box and a positioning instrument connected with one another are connected to the main frame respectively; a winch and a motor connected with each other are arranged on the main frame; an upper limiting switch and a lower limiting switch are connected to the main frame; a cable winds and is connected to the winch; an upper limiting switch baffle and a lower instrument rack are connected to the cable in sequence; the upper limiting switch baffle is correspondingly matched with the upper limiting switch and the lower limiting switch in a blocking manner; a direct and reversed observation instrument is connected into the lower instrument rack; an ocean current instrument bracket equipped with a current measurement instrument is connected to the main frame; a balance ball is connected to the bottom of the main frame through a fixing cable and connected with a water gathering controller; the water gathering controller is connected with water gathering bottles. The automatic ocean observation device has the advantages of simple structure, low cost, convenience in use, low labor intensity and capability of carrying the instrument for automatically obtaining ocean elements, and obtained data is relatively ideal.

The present invention provides an ocean observation submersible. The ocean observation submersible includes a pressure-resistant shell, a gravity center adjusting system, a control system, an oil capsule and a power supply, wherein the pressure-resistant shell is of a hollow structure; the gravity center adjusting system is arranged in the pressure-resistant shell; the control system is arranged in the pressure-resistant shell and is connected with the gravity center adjusting system; the oil capsule is arranged in the pressure-resistant shell and is connected with the gravity center adjustingsystem; and the power supply is arranged in the pressure-resistant shell and is connected with the control system. The ocean observation submersible has the beneficial effects that the submersible can observe the ocean by the modes of profile buoys and underwater gliders separately, the two kinds of working modes can be switched freely, the advantages of the profile buoys and the underwater gliders are combined, the defect that the profile buoys cannot move spontaneously is improved, and the endurance of the underwater gliders is increased; and acoustics and physics are combined for ocean observation, the ocean is observed from multiple angles, and the study of the ocean environment by scientists is facilitated.

The invention belongs to the technical field of ocean observation and discloses a device and a method for measuring dissolved oxygen based on a dual-channel lock-in amplifying technique. The device comprises an oxygen sensitive membrane, an optical detection module, a signal modulation and demodulation module, a signal processing module, a system control module, a communication module and a power management module. Through the technical scheme, the device and the method are capable of measuring the content of the dissolved oxygen in the water in real time, are free of consumption of samples and free of pollution, is stable and efficient, and is also capable of achieving remote on-line in-situ monitoring.

The invention discloses an underwater glider cooperative controller structure and a design method thereof. The structure comprises a communication network and a plurality of controller units, and the communication network is respectively connected with the plurality of controller units after passing through an aperiodic communication mechanism. The aperiodic communication mode is designed by constructing the preset trigger event function based on the path parameters and the neighbor path parameters of the underwater glider, information interaction between the underwater gliders is carried out only when the preset trigger condition is met, the communication burden can be remarkably relieved, energy consumption is reduced, and the actual requirement for long-time marine observation is met. Aiming at an underwater glider cluster system under incomplete state information, uncertain model parameters and complex marine environment disturbance, the dependence of controller design on multiple sensors can be effectively reduced under the condition that underwater gliders are equipped with a small number of sensors and the precision is low, cooperative tracking under a planned path is realized, and the actual requirements of ocean observation are met.

The invention provides a buoy seabed-based dynamic cable system, and relates to the field of ocean observation. The buoy seabed-based dynamic cable system comprises a buoy module, a seabed-based module and a dynamic cable, the buoy module comprises a buoy and a satellite communication device, and the satellite communication device is arranged on the buoy; the seabed base module comprises a monitoring device and a gravity anchor, the gravity anchor is used for being fixed to a seabed, and the monitoring device is installed in the gravity anchor and used for monitoring marine environment data; the dynamic cable is used for connecting the satellite communication device and the monitoring device and transmitting data between the satellite communication device and the monitoring device, the satellite communication device and the monitoring device are connected through the dynamic cable, wired transmission between the satellite communication device and the monitoring device is achieved, and therefore the transmission capacity between the satellite communication device and the monitoring device is increased, and the anti-interference performance of the buoy seabed-based dynamic cable system is improved.

The invention discloses a coupling data assimilation and parameter optimization method based on an optimal observation time window, and belongs to the technical field of data assimilation, parameter optimization and numerical forecasting of a coupling climate mode system. The method aims to overcome the defects of observation resource utilization and state estimation and parameter optimization precision existing in a traditional coupling data assimilation and parameter optimization method. Characteristic time scales of a coupling mode state are obtained by combining spectral analysis of a coupling mode free integral state, and the size of an optimal observation time window is set according to the time scales of the coupling mode state. Introducing a time weight coefficient in the observation window on the basis of obtaining effective atmosphere and ocean observation data based on the optimal observation time window; Effective observation information is extracted to the maximum extent to fit the characteristic change rate of the coupling mode state, the time-varying characteristics of the internal parameters of the mode are ignored, the time average coefficient in the time window isintroduced, more accurate estimation and optimization of the mode parameters are achieved, and the numerical forecasting capacity of atmosphere and ocean of the coupling mode is enhanced.

The invention relates to the technical field of ocean observation, in particular to an acoustic Doppler current meter which comprises a transducer, a measurement treatment module, a system control module, a pressure sensor, an attitude sensor, a temperature sensor, a power supply converting module, an alkaline battery pack and a shell. Based on the Doppler frequency shift principle, the acoustic Doppler current meter aims to resolve current velocities and flow directions by measuring the frequency shift variation of transmission pulse and echo pulse with the combination of instrument attitude data, ambient temperature and pressure data. The acoustic Doppler current meter provided by the invention is placed in a subsurface buoy system, is capable of observing ocean dynamic environment parameters and ocean current data for a long time and acquiring ocean environment parameters such as the temperature, the pressure, the current velocity and the flow direction of a placing sea area, has two working modes of direct reading and self-containing, and also has the characteristics of high current metering precision and flexible operation.

The invention belongs to the field of ocean observation platforms, and particularly relates to a track-controllable ocean observation platform based on temperature difference energy generation. The track-controllable ocean observation platform has the capacity of finely observing a specified area, and the ocean environment information which is more detailed in the specified area can be obtained. According to the track-controllable ocean observation platform, the modular design is adopted, different equipment can be mounted according to different observation tasks, maintenance and replacement of the equipment are facilitated, and the track-controllable ocean observation platform has the beneficial effects of being high in expansibility, reliable in performance and low in maintenance and refitting cost.

The invention discloses a buoy for ocean observation, and belongs to the field of ocean hydrologic observation equipment. The buoy comprises a buoyancy module, an observation module and a counter weight module. The buoyancy module comprises a cylindrical buoy body, the side face of the buoy body is provided with a flow guiding groove spirally surrounding the center axis of the buoy body, a horizontally-placed rod body is arranged on the side face of the buoy body, and a float is distributed on the rod body; the observation module comprises a transparent tube around which the buoy body rotates,and an exposed hydrologic observation device is connected to the interior of the transparent tube. The buoy cannot be wound or damaged by objects, hydrologic detection data is accurate, and the buoyis applicable to complex ocean environment, high in recycling rate and long in service life.