阅读说明：本技术 一种海洋皮肤层盐度测量浮标 (Ocean skin layer salinity measurement buoy ) 是由 孙东波 党超群 李明兵 刘宁 张东亮 朱建华 王贺 于 2020-05-25 设计创作，主要内容包括：本发明公开了一种海洋皮肤层盐度测量浮标。包括：盐度计,安装于测量浮标的水线附近,以使盐度计的电导池能够测量海洋皮肤层的盐度,海洋皮肤层的深度范围为大于第一预设值小于第二预设值；第一水位检测器,位于盐度计的电导池上方,用于检测海水表面是否到达第一水位检测器；第二水位检测器,位于第一水位检测器的上方,用于检测海水表面是否达到第二水位检测器,当海水表面到达第二水位检测器所在位置时,盐度计的测量位置的海深等于第二预设值；主控模块,用于在海水表面到达第一水位检测器所在位置且没有到达第二水位检测器所在位置时,将盐度计测得的盐度信息通过通信模块进行传输。本发明能够对海洋皮肤层的盐度进行测量。(The invention discloses a buoy for measuring salinity of an ocean skin layer. The method comprises the following steps: the salinity meter is arranged near the waterline of the measuring buoy so that the conductivity cell of the salinity meter can measure the salinity of the ocean skin layer, and the depth range of the ocean skin layer is larger than a first preset value and smaller than a second preset value; the first water level detector is positioned above the conductivity cell of the salinity meter and used for detecting whether the surface of the seawater reaches the first water level detector; the second water level detector is positioned above the first water level detector and used for detecting whether the surface of the seawater reaches the second water level detector, and when the surface of the seawater reaches the position of the second water level detector, the sea depth of the measuring position of the salinity meter is equal to a second preset value; and the main control module is used for transmitting salinity information measured by the salinity meter through the communication module when the seawater surface reaches the position of the first water level detector and does not reach the position of the second water level detector. The invention can measure the salinity of the ocean skin layer.)

1. A marine skin layer salinity measurement buoy, characterized by comprising: the device comprises a floating body, a salinity meter, a first water level detector, a second water level detector, a main control module and a communication module;

the salinity meter is arranged near a waterline of the measurement buoy so that a conductivity cell of the salinity meter can measure the salinity of the ocean skin layer, and the depth range of the ocean skin layer is larger than a first preset value and smaller than a second preset value;

the first water level detector is positioned above the conductivity cell of the salinity meter and used for detecting whether the surface of the seawater reaches the position of the first water level detector;

the second water level detector is positioned above the first water level detector, the vertical distance between the second water level detector and the conductivity cell is a set value, and the second water level detector is used for detecting whether the seawater surface reaches the position of the second water level detector or not, wherein the set value meets the following conditions: when the surface of the seawater reaches the position of the second water level detector, the distance between the measuring position of the salinity meter and the sea surface is equal to the second preset value;

the communication module is electrically connected with the main control module;

the main control module is used for acquiring a first detection signal of the first water level detector and a second detection signal of the second water level detector, and transmitting salinity information measured by the salinity meter through the communication module when the first detection signal indicates that the seawater surface reaches the position of the first water level detector and the second detection signal indicates that the seawater surface does not reach the position of the second water level detector.

2. The buoy of claim 1, further comprising an instrument chamber connected to the floating body through a connection rod, wherein the main control module is disposed inside the instrument chamber.

3. The ocean skin layer salinity measurement buoy of claim 1, wherein, the salinity meter is installed on the upper end face of the instrument cabin, and a hole is arranged at the position of the floating body corresponding to the salinity meter, and the size of the hole is larger than that of the salinity meter.

4. The marine skin layer salinity measurement buoy of claim 1, further comprising a temperature measurement module mounted on the housing of the salinity meter within a set range near the conductivity cell and vertically below the upper edge of the conductivity cell.

5. The ocean skin layer salinity measurement buoy of claim 1, wherein the water level detector comprises a first metal probe and a second metal probe that are located on the same horizontal line, and one end of the first metal probe and one end of the second metal probe are respectively and electrically connected with the first signal acquisition end and the second signal acquisition end of the main control module.

6. The ocean skin layer salinity measurement buoy of claim 1, wherein the water level detector is a light sensor or a pressure sensor.

7. The ocean skin layer salinity measurement buoy of claim 1, wherein the first water level detector and the second water level detector are disposed on a housing of the salinity meter, and the first water level detector, the second water level detector and the conductivity cell are located on a same vertical line.

8. The ocean skin layer salinity measurement buoy of claim 3, further comprising a pressure sensor for measuring the attitude of the salinity meter and an attitude sensor disposed inside the instrument pod for measuring the pressure at the depth at which the attitude sensor is located.

9. The ocean skin layer salinity measurement buoy of claim 1, further comprising a thermohaline gauge connected with the instrumentation bay by an messenger cable.

10. The marine skin layer salinity measurement buoy of any one of claims 1-9, wherein the marine skin layer salinity measurement buoy further comprises a flexible float having a thickness and/or material density that is less than the thickness and/or material density of the float, the flexible float being connected to the periphery of the float.

Technical Field

The invention relates to the technical field of ocean observation, in particular to a buoy for measuring salinity of an ocean skin layer.

Background

The ocean skin layer is a water body 0-0.05 m below the surface of seawater, and Sea skin layer salinity (SSS) is used as an important parameter for describing the basic properties of the ocean, plays an important role in global water circulation and ocean circulation and is also an important index of global climate change. The SSS is also a key factor for observing heat flux for driving ocean circulation input and influencing ocean-atmosphere system interface momentum, and provides a basis for global water-gas circulation research; meanwhile, the flow tracer is also an important flow tracer for researching water mass, and provides parameter basis for water mass analysis, global marine mode and other researches; SSS changes have an influence on the storage and release of heat energy by the ocean, further have a profound influence on the regulation of the ocean-earth climate, and have great significance for the deep research and accurate prediction of ENSO events.

Satellite remote sensing is the only method for continuously observing SSS in a large range at present, overcomes the difficulty that other observation methods can not meet the research requirements in the aspects of observation range, time continuity and the like, and becomes an effective means for acquiring the salinity of ocean skin layers in a large range. However, the satellite remote sensing measurement data must be verified and corrected in real time by using the field measurement data, and the currently commonly used field correction equipment mainly comprises a surface drift buoy, a multi-parameter ocean data buoy, an Argo buoy and the like. The measurement data for these conventional buoys, however, typically measure salinity data at depths of 0.5m below the sea surface. For example, the salinity sensor of the surface drift buoy and the multi-parameter ocean data buoy is generally arranged at the bottom of the buoy, and the salinity sensor is generally positioned at the position about 0.5-1.5 m below a waterline according to the size of the buoy; the sampling interval of the Argo buoy within the depth of 0-200 m is 10 m. And the sea surface salinity measured by a common satellite remote sensing method is shallow data with the depth of 0.05 m. Research shows that under the sea condition of below five levels, the salinity at the sea surface of 0.05m and 0.5m is greatly different, so that the conventional buoy measurement data serving as a calibration data standard for satellite remote sensing measurement is easy to generate large calibration errors.

The measurement of the salinity of the ocean skin layer cannot be realized simply by changing the distance between the salinity sensor and the waterline under the limitation of salinity measurement mechanism, size, wave following property and other conditions of the conventional drifting buoy and anchoring buoy. This is because if the salinity sensor is close to the water surface (0-0.05 m), even if the fluctuation of the buoy is good, when the buoy moves to the highest point, the salinity sensor of the buoy will be exposed in the air due to the inertia of the buoy, and thus the salinity of the seawater cannot be accurately obtained, resulting in a large measurement error.

Aiming at the requirements of real-time verification and correction of satellite remote sensing measurement, a novel buoy capable of acquiring sea surface skin layer salinity data within the depth range of 0-0.05 m is very necessary to be developed, and the on-site measurement of the sea skin layer salinity is realized.

Disclosure of Invention

The invention aims to provide a buoy capable of measuring the salinity of a marine skin layer.

In order to achieve the purpose, the invention provides the following scheme:

a marine skin layer salinity measurement buoy, comprising: the device comprises a floating body, a salinity meter, a first water level detector, a second water level detector, a main control module and a communication module;

the salinity meter is arranged near a waterline of the measurement buoy so that a conductivity cell of the salinity meter can measure the salinity of the ocean skin layer, and the depth range of the ocean skin layer is larger than a first preset value and smaller than a second preset value;

the first water level detector is positioned above the conductivity cell of the salinity meter and used for detecting whether the surface of the seawater reaches the position of the first water level detector;

the second water level detector is positioned above the first water level detector, the vertical distance between the second water level detector and the conductivity cell is a set value, and the second water level detector is used for detecting whether the seawater surface reaches the position of the second water level detector or not, wherein the set value meets the following conditions: when the surface of the seawater reaches the position of the second water level detector, the distance between the measuring position of the salinity meter and the sea surface is equal to the second preset value;

the communication module is electrically connected with the main control module;

the main control module is used for acquiring a first detection signal of the first water level detector and a second detection signal of the second water level detector, and transmitting salinity information measured by the salinity meter through the communication module when the first detection signal indicates that the seawater surface reaches the position of the first water level detector and the second detection signal indicates that the seawater surface does not reach the position of the second water level detector.

Optionally, the ocean skin layer salinity measurement buoy further comprises an instrument cabin connected with the floating body through a connecting rod, and the main control module is arranged inside the instrument cabin.

Optionally, the salinity meter is mounted on the upper end surface of the instrument cabin, a hole is formed in the position, corresponding to the salinity meter, of the floating body, and the size of the hole is larger than that of the salinity meter.

Optionally, the ocean skin layer salinity measurement buoy further comprises a temperature measurement module, which is mounted on the housing of the salinity meter, is located in a set range near the conductivity cell, and is vertically lower than the upper edge of the conductivity cell.

Optionally, the water level detector includes a first metal probe and a second metal probe which are located on the same horizontal line, and one end of the first metal probe and one end of the second metal probe are respectively electrically connected to the first signal acquisition end and the second signal acquisition end of the main control module.

Optionally, the water level detector is a light sensor or a pressure sensor.

Optionally, the first water level detector and the second water level detector are disposed on a housing of the salinity meter, and the first water level detector, the second water level detector and the conductivity cell are located on the same vertical line.

Optionally, the ocean skin layer salinity measurement buoy further comprises a pressure sensor and an attitude sensor arranged inside the instrument cabin, wherein the attitude sensor is used for measuring the attitude of the salinity meter, and the pressure sensor is used for measuring the pressure of the depth where the attitude sensor is located.

Optionally, the ocean skin layer salinity measurement buoy further comprises a thermohaline depth gauge, and the thermohaline depth gauge is connected with the instrument cabin through a bearing power cable.

Optionally, the ocean skin layer salinity measurement buoy further comprises a flexible floating body, the thickness and/or the material density of the flexible floating body is smaller than that of the floating body, and the flexible floating body is connected with the periphery of the floating body.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the ocean skin layer salinity measuring buoy provided by the invention, the salinity meter is arranged near the waterline of the buoy, the first water level detector and the second water level detector are arranged, and when the surface of seawater is positioned between the first water level detector and the second water level detector, the salinity information measured by the salinity meter is the salinity information of the ocean skin layer. The main control module collects output information of the first water level detector and the second water level detector, determines whether the surface of the seawater is positioned between the first water level detector and the second water level detector according to the output information, and transmits salinity information measured by the salinity meter as effective information when the surface of the seawater is positioned between the first water level detector and the second water level detector. The measuring buoy solves the measuring errors caused by the over shallow ocean skin layer and the fluctuation of the buoy, and provides the measuring buoy capable of accurately measuring the salinity of the ocean skin layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a marine skin layer salinity measuring buoy provided in embodiment 1 of the present invention;

fig. 2 is a schematic view of an installation position of a water level detector provided in embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a water level detector provided in embodiment 1 of the present invention;

FIG. 4 is a schematic structural diagram of a marine skin layer salinity measuring buoy provided in embodiment 2 of the present invention;

fig. 5(a) and 5(b) are schematic diagrams of sea depth calculation of the first water level detector provided in embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of a marine skin layer salinity measuring buoy provided in embodiment 3 of the present invention;

fig. 7 is a schematic structural diagram of a marine skin layer salinity measuring buoy provided in embodiment 4 of the present invention.

1. A communication module; 2. a salinity meter; 21. a salinity meter housing; 22. a second water level detector; 23. a first water level detector; 24. a temperature measurement module; 25. a conductivity cell; 26. a strut; 221. a first metal probe of a second water level detector; 222. a second metal probe of a second water level detector; 231. a first metal probe of the first water level detector; 232. a second metal probe of the first water level detector; 3. a float; 4. an instrument pod; 5. an attitude sensor; 6. a main control module; 7. a pressure sensor; 8. a force-bearing power cable; 9. an underwater chamber; 10. a thermohaline probe; 11. a flexible float.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.