CN110104125B

CN110104125B - Buoy system is surveyd to ocean wave

Info

Publication number: CN110104125B
Application number: CN201910314105.7A
Authority: CN
Inventors: 徐大伟
Original assignee: Hangzhou Tenghai Technology Co ltd
Current assignee: Hangzhou Tenghai Technology Co ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-07-28
Anticipated expiration: 2039-04-18
Also published as: CN110104125A

Abstract

The invention relates to the technical field of ocean observation, in particular to an ocean wave observation buoy system which comprises a server and a plurality of buoys, wherein each buoy comprises a shell, a three-axis accelerometer, a communication module, a storage, a positioning module, a battery and an MCU (microprogrammed control unit), the shell is a sealed shell drifting along with waves on the sea surface, the three-axis accelerometer, the communication module, the storage, the positioning module, the battery and the MCU are all arranged in the shell, the three-axis accelerometer, the communication module, the storage and the positioning module are all connected with the MCU, and the communication module is in communication connection with the server. The substantial effects of the invention are as follows: the three-dimensional movement track of the buoy drifting along with the sea waves is obtained by combining the three-axis accelerometer with the data of the positioning module, and after enough data are accumulated, wave height, wave direction and wave period data in the sea area can be mastered, so that an observation task is completed.

Description

Buoy system is surveyd to ocean wave

Technical Field

The invention relates to the technical field of ocean observation, in particular to an ocean wave observation buoy system.

Background

Ocean observation can provide necessary actual measurement data support for developing fishing port refined forecast service and numerical value post-reporting simulation. The precision of the fishing port refined forecast and the service refinement degree are improved, and the fishery typhoon-prevention wind-sheltering scientific decision-making command capability is improved. The marine observation factors comprise tidal height, tidal time, wave height, wave direction and wave period. The meteorological observation elements mainly observe wind speed and wind direction, and observe temperature, humidity, air pressure, precipitation and the like. The method adopts a three-axis accelerometer and an inclination and electronic compass integrated sensor to measure the wave following operation of the buoy, obtains a time sequence of wave height through digital filtering and frequency domain secondary integration, and has the characteristics of high precision, strong reliability, good stability, low power consumption and the like. The accelerometer measures the sinking and floating movement of the carrier by sensing the sinking and floating operation of the buoy in water. And filtering out noise signals in the acquired acceleration signals through digital filtering. And then obtaining a displacement time sequence of the floating motion of the carrier sinking station receiving software through digital secondary integration. Finally, the wave characteristic value of the carrier reaction is given through statistics. The wave direction counts the direction of each wave through the motion condition of horizontal displacement and inclination when the buoy crosses a zero point, and then counts the main wave direction or sixteen direction distribution of the wave direction in a measurement time period. However, the effect of the existing three-axis accelerometer on acceleration detection of an object in violent rolling motion is poor. This is because when rolling along the center of the triaxial accelerometer in a rolling motion, all sensors are subjected to tangential shear forces, and the sensors cannot detect the shear force in the direction of shear, resulting in the triaxial accelerometer not detecting the component of the rolling motion along the center thereof. Therefore, the tumbling motion of the object needs to be controlled within a small range to make the detection result more accurate. The buoy rolls very violently on the sea surface, the structure of the existing three-axis gyroscope frame for preventing the three-axis accelerometer from rolling is complex, the rolling of the three-axis accelerometer cannot be completely avoided, the three axes of the three-axis accelerometer continuously deviate, the accumulated error is large, and the buoy cannot run on the sea surface for a long time. Therefore, it is necessary to develop a sea wave observation buoy which is suitable for long-term operation on the sea surface and can keep the three-axis direction of the three-axis accelerometer stable.

Chinese patent CN203116736U, published 2013, 8, 7, a marine observation current wavemeter. The wavemeter includes a first transducer, at least three second transducers, a transmitter, a receiver, and a signal processor. The first acoustic signal and the second acoustic signal are respectively transmitted through the first transducer and the second transducer, the first echo signal of the first acoustic signal and the second echo signal of the second acoustic signal are further received, then the first echo signal and the second echo signal are amplified through the receiver, the signal processor processes the first echo signal to obtain the concentration of suspended sediment and processes the second echo signal to obtain the wave height, the period, the direction and the water flow velocity of sea surface waves, the functions of instruments such as a Doppler acoustic velocity profiler, an acoustic backscattering suspended sediment measuring instrument and a wavemeter are integrated, and further the problems that a plurality of instruments work at the same time, the occupied size is large, and interface data processing is complex are solved. However, the method is only suitable for shallow sea areas, and the acoustic power and the interference required for detection in deep sea areas are large, so that the technical scheme cannot obtain an effective detection result.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the technical problem that an observation system for effectively observing sea waves in a deep sea area is lacked at present. The ocean wave observation buoy system which adopts the three-axis accelerometer and is suitable for long-term running detection of the sea surface is good in accuracy and high in reliability.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a buoy system is observed to ocean wave, includes the server, still includes a plurality of buoy, the buoy includes shell, triaxial accelerometer, communication module, memory, orientation module, battery and MCU, the shell is the sealed shell along with the wave drift at the sea, triaxial accelerometer, communication module, memory, orientation module, battery and MCU all install in the shell, triaxial accelerometer, communication module, memory and orientation module all are connected with MCU, communication module and server set up communication connection. Data of the three-axis accelerometer and the positioning module are packaged by the MCU and stored in the memory, then the data are sent to the server through the communication module, the server obtains a three-dimensional motion track of the buoy drifting along with sea waves, and after enough data are accumulated, wave height, wave direction and wave period data in the sea area can be mastered, and an observation task is completed.

Preferably, the shell of buoy is sealed spherical, be equipped with mounting platform in the shell, communication module, memory, orientation module, battery and MCU all install mounting platform is last, be provided with two installation poles along the ball footpath direction in the shell, two installation poles are inwards extended by shell inner wall simultaneously, triaxial accelerometer installs between two installation poles. The sealed shell can prevent seawater from entering and protect internal elements. The shell of the buoy is filled with a drying agent.

Preferably, a small amount of metallic sodium is put into the sealed shell of the buoy before closing, and the metallic sodium is granular. The metal sodium can consume oxygen in the sealed shell and generate solid sodium oxide, so that the total amount of gas in the sealed shell is reduced, a certain vacuum degree is formed, and the gas in the sealed shell cannot generate large pressure after the temperature is increased to influence the sealing property; meanwhile, oxygen in the sealed shell is reduced, the rate of oxidation and aging of the electronic device is delayed, and the service life of the electronic device is prolonged.

Preferably, the triaxial accelerometer comprises a triaxial acceleration sensor, a transmitter and a wireless communication module, the triaxial accelerometer comprises a spherical shell, two supporting rods, two supporting tiles and a spherical core, the outer wall of the spherical shell is provided with two mounting grooves, the mounting grooves are fixedly connected with the mounting rods, the mounting rods are arranged on the inner wall of the shell, the two supporting rods extend inwards from the inner wall of the spherical shell along the diameter of the spherical shell, the two supporting tiles are respectively fixed at the tail ends of the two supporting rods, the spherical core is clamped into the two supporting tiles, the outer edge of the spherical core is attached to the two supporting tiles, a gap is reserved between the spherical core and the supporting tiles so that the spherical core can rotate, the spherical core is a hollow ball, and the triaxial acceleration sensor, the transmitter and the wireless communication module are all installed in the hollow core of the spherical core, the three-axis acceleration sensor is connected with the transmitter, the transmitter is connected with the wireless communication module, the spherical core is a spherical core allowing a wireless signal to pass, and the wireless communication module is in communication connection with the communication module. Lubricating oil or lubricating grease is arranged between the supporting tile and the ball core, so that the friction force between the supporting tile and the ball core is reduced, the ball core is prevented from rolling along with the shell, and the three axes of the three-axis acceleration sensor basically maintain the directions.

Preferably, the spherical core is made of magnetic material, and the spherical core and the spherical hollow center are both positioned on the magnetic pole interface of the spherical core. The spherical core is internally hollow and is internally provided with a device, so that the center of gravity of the whole spherical core deviates from the center of the sphere, if the spherical core rolls under the action of gravity, after the rolling motion disappears or is weakened, the posture of the center of gravity right below the center of the sphere can be automatically recovered, the direction of a vertical shaft in the three-axis accelerometer is kept unchanged, under the action of the earth magnetic field, the spherical core can rotate along a plumb line after the vertical shaft is reset and rotates to a position where a magnetic pole is matched with the earth magnetic field, so that the spherical core is reset in the horizontal direction, the directions of three axes of the three-axis accelerometer are all recovered, the directions of the three axes can be automatically recovered and corrected after short-time three-axis deviation, the three-axis orientation of the three-axis accelerometer can be operated on the sea for a long time, the three-axis.

Preferably, triaxial acceleration sensor includes three pairs of mutually orthogonal pressure sensor group, six fixing bases and heavy object, and pressure sensor group all includes two pressure sensor, the first end of pressure sensor all with the heavy object butt, the pressure sensor second end all is installed through the fixing base on the hollow inner wall of ball core, pressure sensor detects the pressure that receives, pressure sensor all is connected with the changer.

Preferably, the hollow of the spherical core is a spherical hollow, and the spherical center of the spherical hollow is not coincident with the spherical center of the spherical core. The whole gravity center of the ball core and the deviation of the ball core are intensified, so that the capability of the ball core for keeping the plumb direction and the speed for recovering the plumb direction after the deviation can be enhanced.

The substantial effects of the invention are as follows: the three-dimensional movement track of the buoy drifting along with the sea wave is obtained by combining the data of the three-axis accelerometer and the positioning module, after enough data are accumulated, the wave height, the wave direction and the wave period data in the sea area can be mastered, the observation task is completed, the accuracy is high, the reliability is higher, the accuracy of ocean wave observation can be improved, and powerful support is provided for ocean activities.

Drawings

FIG. 1 is a schematic view of the embodiment of a float.

FIG. 2 is a schematic view of the internal components of a float according to one embodiment.

Figure 3 is a cross-sectional view of a tri-axial accelerometer mount of an embodiment.

FIG. 4 is a cross-sectional view of a core according to one embodiment.

FIG. 5 is a three-dimensional schematic diagram of a three-axis accelerometer mount and a three-axis accelerometer section according to an embodiment.

FIG. 6 is a cross-sectional view of a three-axis accelerometer mount and three-axis accelerometer according to an embodiment.

Wherein: 1. the device comprises a shell, 2, a three-axis accelerometer, 3, a communication module, 4, a memory, 5, an installation rod, 6, a positioning module, 7, an MCU, 8, a spherical shell, 9, a support rod, 10, a support tile, 11, a heavy object, 12, a pressure sensor, 13, a spherical core, 14, a fixed seat, 15, a transmitter, 16 and lubricating oil.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

The first embodiment is as follows:

an ocean wave observation buoy system comprises a server and (a plurality of) buoys, wherein the buoys are thrown in a target sea area and drift along with waves. As shown in fig. 1 and 2, the buoy includes a housing 1, a three-axis accelerometer 2, a communication module 3, a storage 4, a positioning module 6, a battery and an MCU7, the housing 1 is a sealed housing drifting along with waves on the sea surface, the three-axis accelerometer 2, the communication module 3, the storage 4, the positioning module 6, the battery and the MCU7 are all installed in the housing 1, the three-axis accelerometer 2, the communication module 3, the storage 4 and the positioning module 6 are all connected with the MCU7, and the communication module 3 is in communication connection with a server. The shell 1 of buoy is sealed spherical, is equipped with mounting platform in the shell 1, and communication module 3, memory 4, orientation module 6, battery and MCU7 all install on mounting platform, are provided with two installation poles 5 along the ball footpath direction in the shell 1, and two installation poles 5 are inwards extended by shell 1 inner wall simultaneously, as shown in fig. 5, three-axis accelerometer 2 installs between two installation poles 5. The sealed housing 1 of the float is filled with a small amount of metallic sodium and lubricating oil 16 before closing. The metal sodium is filled in an insulating container with a hole. As shown in fig. 3, the mounting base of the triaxial accelerometer 2 comprises a spherical shell 8, two supporting rods 9, two supporting tiles 10 and a spherical core 13, wherein two mounting grooves are formed in the outer wall of the spherical shell 8, the mounting grooves are fixedly connected with the mounting rods 5, the mounting rods 5 are arranged on the inner wall of the housing 1, the two supporting rods 9 extend inwards from the inner wall of the spherical shell 8 along the diameter of the spherical shell 8, the two supporting tiles 10 are respectively fixed at the ends of the two supporting rods 9, the spherical core 13 is clamped into the two supporting tiles 10, the outer edge of the spherical core 13 is attached to the two supporting tiles 10, a gap is left between the spherical core 13 and the supporting tiles 10 to enable the spherical core 13 to rotate, as shown in fig. 4, the spherical core 13 is a hollow sphere, the triaxial acceleration sensor, the transmitter 15 and the wireless communication module are all mounted in the hollow of the spherical core 13, the triaxial acceleration sensor is connected with the transmitter 15, the transmitter 15, the wireless communication module establishes a communication connection with the communication module 3. As shown in fig. 6, the hollow of the spherical core 13 is a spherical hollow, and the center of the spherical hollow does not coincide with the center of the spherical core 13. The ball core 13 is made of magnetic material, and the ball core 13 and the spherical hollow center are positioned on the magnetic pole interface of the ball core 13. Triaxial acceleration sensor includes three pairs of mutually orthogonal pressure sensor 12 groups, six fixing base 14 and heavy object 11, and pressure sensor 12 groups all includes two pressure sensor 12, and the first end of pressure sensor 12 all with 11 butts of heavy object, and pressure sensor 12 second end all installs on the hollow inner wall of spherical core 13 through fixing base 14, and pressure sensor 12 detects the pressure that receives, and pressure sensor 12 all is connected with changer 15.

The working method of the embodiment comprises the following steps: and putting a plurality of buoys in the target sea area, collecting sea wave data, and processing the data to obtain ocean data information of the target sea area. The sphere core 13 adopted in the embodiment is hollow, and a device is installed in the hollow, so that the center of gravity of the whole sphere core 13 deviates from the sphere center, under the action of gravity, if the sphere core 13 rolls, after the rolling motion disappears or weakens, the posture of the center of gravity right below the sphere center can be automatically recovered, so that the direction of a vertical axis in the triaxial accelerometer 2 is kept unchanged, under the action of a terrestrial magnetic field, the sphere core 13 can rotate along a plumb line after being reset by the vertical axis, and rotate to a position where a magnetic pole is matched with the terrestrial magnetic field, so that the sphere core 13 is reset in the horizontal direction, so that the directions of three axes of the triaxial accelerometer 2 are all recovered, and after the short triaxial deviation, the directions of the three axes can be automatically recovered and corrected, so that the device can operate on a long-term sea surface, keep the three axes orientation of the triaxial accelerometer 2 stable.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.

Claims

1. An ocean wave observation buoy system, which comprises a server and is characterized in that,

the buoy comprises a shell, a three-axis accelerometer, a communication module, a storage, a positioning module, a battery and an MCU (microprogrammed control Unit), wherein the shell is a sealed shell drifting along with waves on the sea surface, the three-axis accelerometer, the communication module, the storage, the positioning module, the battery and the MCU are all installed in the shell, the three-axis accelerometer, the communication module, the storage and the positioning module are all connected with the MCU, and the communication module is in communication connection with a server;

still include triaxial accelerometer mount pad, triaxial accelerometer includes triaxial acceleration sensor, changer and wireless communication module, triaxial accelerometer mount pad includes spherical shell, two branches, two support tiles and spherical core, the processing of spherical shell outer wall has two mounting grooves, mounting groove and installation pole fixed connection, the installation pole sets up the shell inner wall, two branches follow the spherical shell inner wall inwards extends simultaneously along the spherical shell diameter, two support tiles are fixed respectively at the end of two branches, the spherical core card is gone into two support tiles, the laminating of spherical core outer fringe and two support tiles, leave the clearance between spherical core and the support tile and make the spherical core can rotate, the spherical core is the clean shot, triaxial acceleration sensor, changer and wireless communication module all install in the hollow of spherical core, the three-axis acceleration sensor is connected with the transmitter, the transmitter is connected with the wireless communication module, the spherical core is a spherical core allowing a wireless signal to pass, and the wireless communication module is in communication connection with the communication module.

2. The ocean wave observation buoy system of claim 1,

the shell of buoy is sealed spherical, be equipped with mounting platform in the shell, communication module, memory, orientation module, battery and MCU all install mounting platform is last, be provided with two installation poles along the ball footpath direction in the shell, two installation poles are inwards extended by shell inner wall simultaneously, triaxial accelerometer installs between two installation poles.

3. A sea wave observation buoy system as claimed in claim 1 or 2,

the shell of the buoy is filled with a drying agent.

4. The ocean wave observation buoy system of claim 1,

triaxial acceleration sensor includes three pairs of mutually orthogonal pressure sensor group, six fixing bases and heavy object, and pressure sensor group all includes two pressure sensor, the heavy object is located the hollow middle part of ball core, the first end of pressure sensor all with the heavy object butt, the pressure sensor second end all is installed through the fixing base on the hollow inner wall of ball core, pressure sensor detects the pressure that receives, pressure sensor all is connected with the changer.

5. The ocean wave observation buoy system of claim 1,

the hollow of the spherical core is spherical hollow, and the spherical center of the spherical hollow is not coincident with the spherical center of the spherical core.

6. A sea wave observation buoy system as claimed in claim 5,

the spherical core is made of magnetic materials, and the spherical core and the spherical hollow center are both positioned on a magnetic pole interface of the spherical core.