CN111505060B - Ocean skin layer salinity measurement buoy - Google Patents
Ocean skin layer salinity measurement buoy Download PDFInfo
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- CN111505060B CN111505060B CN202010446456.6A CN202010446456A CN111505060B CN 111505060 B CN111505060 B CN 111505060B CN 202010446456 A CN202010446456 A CN 202010446456A CN 111505060 B CN111505060 B CN 111505060B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/08—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid which is flowing continuously
- G01N27/10—Investigation or analysis specially adapted for controlling or monitoring operations or for signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B2022/006—Buoys specially adapted for measuring or watch purposes
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Abstract
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.
Description
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.
Example 1
The ocean skin layer salinity measurement buoy that this embodiment provided includes: the device comprises a floating body 3, a salinity meter 2, a first water level detector, a second water level detector, a main control module 6 and a communication module 1. The salinity meter 2 is arranged near the waterline of the measuring buoy, so that the conductivity cell of the salinity meter 2 can measure the salinity of the ocean skin layer, the depth range of the ocean skin layer is larger than a first preset value and smaller than a second preset value, wherein the first preset value can be 0, and the second preset value can be 0.05m, but the salinity meter is not limited to the above numerical values, namely the salinity meter can measure the salinity of the ocean skin layer and is also suitable for measuring the salinity of seawater at other depths. The first water level detector 23, located above the conductivity cell of the salinity meter 2, may be located next to the conductivity cell in the vertical direction, for detecting whether the seawater surface reaches the location of the first water level detector, and when the seawater surface reaches the first water level detector, the conductivity cell has completely entered the water, which may realize the measurement of the salinity of the seawater. 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, the second water level detector is used for detecting whether the surface of the seawater reaches the position of the second water level detector, and the set value meets the following conditions: when the surface of the sea water reaches the position of the second water level detector, the sea depth of the position measured by the salinity meter 2 is equal to the second preset value. The main control module 6 collects a first detection signal of the first water level detector and a second detection signal of the second water level detector, transmits salinity information measured by the salinity meter 2 through the communication module 1 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, discards the salinity information measured by the salinity meter 2 when the first detection signal indicates that the seawater surface does not reach the position of the first water level detector and the second detection signal indicates that the seawater surface reaches the position of the second water level detector, and ensures that salinity data transmitted by the main control module 6 is salinity data with the sea depth larger than a first preset value and smaller than a second preset value.
In this embodiment, the float 3 may be of EVA material and polyurea sprayed on to provide sufficient buoyancy and provide the possibility for the salinity meter 2 to be located near the float waterline.
In the present embodiment, the salinity meter 2 may be installed near the float waterline in a specific manner as shown in fig. 1, the salinity meter 2 may be installed on a stage, and the distance between the stage and the float 3 may be adjusted to allow the measurement position of the salinity meter 2 to be located near the float waterline. As an alternative embodiment, the object stage is connected with the floating body 3 through a support rod, and specifically, the object stage may be connected with the floating body 3 through three support rods which are uniformly distributed. Of course, the skilled person can connect the object table to the floating body 3 in other ways according to the usual methods in the art.
In this embodiment, the salinity meter 2 stands on the upper end surface of the stage, in other embodiments, the salinity meter 2 may also be fixed on the side surface of the stage, so as to realize the measurement of the salinity of the ocean skin layer, and the installation method is not limited to this embodiment.
The main control module 6 is installed inside the instrument capsule 4, and the instrument capsule 4 is fixed below the floating body 3, in this embodiment, the upper end surface of the instrument capsule 4 is the objective table described in this embodiment, but of course, in other embodiments, the objective table and the instrument capsule 4 may not be related.
The buoy provided by the embodiment may further include a temperature measuring module, such as a thermistor, installed near the salinity meter 2, for measuring the temperature of the location measured by the salinity meter 2, and calculating salinity information of the location according to the temperature measured by the temperature measuring module and the conductivity measured by the salinity meter 2. As a preferred embodiment, the temperature measuring module can be arranged on the housing of the salinity meter 2 and, in principle, is vertically below the upper edge of the conductivity cell and close to the conductivity cell. The position that body 3 and salinity meter 2 correspond is seted up porosely, and the size of this hole is far more than the size of salinity meter 2 cross section, for example, can be more than the twice of instrument cabin 4 up end size to avoid body 3 to be too close to salinity meter 2, influence the accuracy of the temperature that the temperature measurement module measured. In the present embodiment, the holes are circular holes, and the floating bodies 3 are annular floating bodies 3, but the holes are not limited to circular holes, and may be holes of other shapes, and the floating bodies 3 are not limited to annular floating bodies 3.
In this embodiment, the first water level detector and the second water level detector may be the same water level detector, and as an optional implementation, the water level detector may include a first metal probe and a second metal probe located on the same horizontal line, the first metal probe and the second metal probe are insulated in structural arrangement, for example, the first metal probe and the second metal probe are not in contact with each other and are insulated between structures that fix the first metal probe and the second metal probe, and one end of the first metal probe and one end of the second metal probe are electrically connected to the first signal acquisition end and the second signal acquisition end of the main control module 6, respectively. When the seawater surface reaches the position of the water level detector, the seawater is conductive, the first metal probe and the second metal probe are conducted, and when the main control module 6 detects that the seawater surface is conducted, the seawater surface can be determined to reach the position of the water level detector. In other embodiments, the water level detector may also be a light sensor, and when the light sensor detects that the light intensity changes, for example, the light intensity changes from a higher light intensity to a lower light intensity (the specific light intensity value may be set by a person skilled in the art according to actual conditions), the seawater surface is considered to reach the water level detector. In another embodiment, the water level detector may also be a pressure sensor, and since the pressure sensor is subjected to a different pressure in the sea water than in the air, it can be determined whether the sea water surface reaches the water level detector. Of course, the water level detector of the present invention is not limited to the above cases, and any device capable of distinguishing the states of not being submerged by seawater and submerged by seawater (and capable of being mounted on a float) is within the protection scope of the water level detector of the present invention.
In this embodiment, as an alternative embodiment, as shown in fig. 2, the first water level detector 23 and the second water level detector 22 are disposed on the housing of the salinity meter 2, and the first water level detector 23, the second water level detector 22 and the conductivity cell 25 are located on the same vertical line. Of course, the first water level detector 23 and the second water level detector 22 may not be mounted on the housing of the salinity meter 2, and the support structures of the first water level detector 23 and the second water level detector 22 may be separately provided and mounted on the support structures. In addition, the axis of the first water level detector 23, the axis of the second water level detector 22 and the axis of the conductivity cell 25 may not be located on the same vertical line, and the positions of the first water level detector 23 and the second water level detector 22 are set based on that when the seawater surface is located between the first water level detector 23 and the second water level detector 22, the measurement position of the salinity meter 2 is the ocean skin layer (or the sea depth is greater than the first preset value and less than the second preset value).
The two metal probes shown in fig. 3 are located on two sides of the housing 21 of the salinity meter, but of course, the two metal probes may be located on the same side of the housing 21 of the salinity meter as long as the two metal probes are located on the same horizontal straight line, and other arrangements based on this idea are also within the scope of the present invention.
Example 2
As shown in fig. 4, the ocean skin layer salinity measuring buoy provided by the present embodiment further includes a pressure sensor 7 and an attitude sensor 5 disposed inside the instrument chamber 4, the attitude sensor 5 is used for measuring the attitude of the salinity meter 2, and the pressure sensor 7 is used for measuring the pressure at the depth where the attitude sensor 5 is located.
Optionally, the specific installation manner may be as follows: the attitude sensor 5 is installed in the instrument chamber 4, the pressure sensor 7 can be installed on the outer wall of the instrument chamber 4, the axis of the pressure sensor 7 is coincident with the X axis of the attitude sensor 5, and the axis of the pressure sensor 7 is parallel to the axis of the conductivity cell 25 and is positioned in the XOZ plane of the attitude sensor 5. The calculation principle is as shown in fig. 5a and 5b, and fig. 5a shows the relative positions of the first water level detector 23 and the pressure sensor 7, with the distance therebetween fixed at L. When the buoy rocks as the waves fluctuate, the buoy starts to tilt, as shown in fig. 5b, the first water level detector 23 enters below the surface at a distance h from the surface. The attitude sensor 5 can give the inclination angle theta of the buoy, and the pressure sensor 7 can measure the distance H from the sea surface. From fig. 5b, it can be seen that the distance between the first water level detector and the sea surface is: H-H1In this method, the position of the first water level detector is used as a reference for the position of the conductivity cell, and since the relative distance between the first water level detector and the conductivity cell is known, the method is based on H-L · cos θThe sea depth of the conductivity cell may be calculated based on the sea depth of the first water level detector. If the first water level detector is located close to the conductivity cell, the sea depth of the first water level detector may also be used as the sea depth of the conductivity cell. The above specific installation method and calculation method are only one method for determining the sea depth of the position measured by the salinity meter, and of course, the sea depth of the position measured by the salinity meter can also be determined by using other installation methods and calculation methods by using the attitude sensor and the pressure sensor.
In the embodiment, 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, the salinity information and the water depth of the measurement position are transmitted through the communication module. Other parts of this example are the same as example 1.
Example 3
As shown in fig. 6, the ocean skin layer salinity measurement buoy that this embodiment provided still includes the thermohaline depth gauge, the thermohaline depth gauge with instrument cabin 4 passes through bearing power cable 8 and connects, and the thermohaline depth gauge is located the storehouse bottom under water, including thermohaline depth gauge probe 10 and the processing module who is located under water cabin 9, measures the normal surface layer thermohaline depth data of the depth of water about 1m, compares with the salinity of the skin layer that the buoy measured, obtains the difference relation between the two, is convenient for explore the scientific law of salinity difference between shallow water layer and the skin layer. The other portions of this embodiment are the same as those of embodiment 1 or embodiment 2.
Example 4
The ocean skin layer salinity measuring buoy also comprises a flexible floating body 11, the thickness of the flexible floating body 11 is smaller than that of the floating body 3, or the material density of the flexible floating body 11 is smaller than that of the floating body 3, or both the thickness of the flexible floating body 11 and the measured density are smaller than that of the floating body 3 and the material density. Flexible floating bodies 11 are attached to the periphery of the floating bodies 3 as shown in fig. 7. The flexible floating body 11 can be prepared in the following way: polyurea was sprayed on the outside of a flexible foam film having a thickness of 5mm, and the foam film was wrapped with a tarpaulin. The flexible float 11 may be connected to the float 3 in the following way: the flexible floating body 11 can be formed by wrapping a foam film with waterproof canvas and then reserving a margin with a certain width, and hard corrosion-resistant device eyes are arranged on the margin. The wear-resistant rope penetrates through the device hole and then is connected with a preformed hole on the buoy body.
When the buoy fluctuates with sea waves, the flexible floating body can improve the overall motion damping to improve the adsorption force between the buoy and the sea water, and when the buoy moves to the highest point of the sea waves, the buoy is prevented from being separated from the water surface due to inertia. If the buoy is frequently separated from the water surface, measurement misjudgment is easily caused, and the measurement precision is influenced.
The other portions of this embodiment are the same as those of embodiment 1, embodiment 2, or embodiment 3.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
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 2, wherein the salinity meter is installed on the upper end face of the instrument cabin, and a hole is formed in the floating body at a position 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 2, wherein, 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.
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.
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| CN202010446456.6A CN111505060B (en) | 2020-05-25 | 2020-05-25 | Ocean skin layer salinity measurement buoy |
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| CN202010446456.6A CN111505060B (en) | 2020-05-25 | 2020-05-25 | Ocean skin layer salinity measurement buoy |
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| CN111505060A CN111505060A (en) | 2020-08-07 |
| CN111505060B true CN111505060B (en) | 2020-10-30 |
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