KR100992085B1 - Low salinity alarm system - Google Patents

Abstract

PURPOSE: A low-salinity alarming system for the Jeju sea area is provided to prevent the damage of the fish farm by the low-salinity by warning the low-salinity when the predicted salinity is lower that the prefixed range. CONSTITUTION: A low-salinity alarming system for the Jeju sea area includes a wind velocity database(10), a central control unit(20), and an alarming unit(30). The wind velocity database stores wind speed data of a wind grille located on the line continuing from the entrance of the Chang Jiang to the Jeju island. The central control unit predicts the salinity from the wind velocity database. The alarming unit outputs a signal when the predicted salinity is lower or higher than a prefixed salinity range.

Description

Low salinity alarm system {LOW SALINITY ALARM SYSTEM}

The present invention relates to a system for alarming the low salinity of seawater, and more particularly, when the salinity of a seawater area within a set range is predicted using a wind component that determines the path of fresh water flowing into the seawater and is below a certain salinity. A low salinity alarm system for generating an alarm.

In summer, problems occur in Jeju and the south coast, such as aquaculture, due to the inflow of low salt water from the Yangtze River. However, the distribution of the Yangtze River low salt water is not quantified, so the prediction is not easy. Therefore, the accurate prediction of Yangtze River Low Salt Water inflow may contribute to reducing such damage.

On the other hand, Korea's offshore has been regularly selected by the National Fisheries Research and Development Institute until now, but since it is observed every other month, there is a limit in predicting the salt concentration considering the inflow of the Yangtze River in the waters near Jeju Island.

Recent studies have shown that the factors determining the expansion of the Yangtze River's low brine to Korea are known as the discharge of the Yangtze River, wind, tides, and ocean currents in the East China Sea. The factor influencing is known as the quantum cavity emission. However, as shown in (a) of FIG. 6, the Yangtze river discharge amount does not appear to significantly affect the expansion of low salt water in the vicinity of Jeju Island, and as shown in FIG. It has been shown to greatly affect the expansion of low salt water in nearby waters. In summary, even though the amount of discharge from the Yangtze River is low, it is difficult for low salt water to expand around Korea without the influence of wind.

The low salinity alarm system of the present invention, considering the above factors, aims to predict and inform the movement of the Yangtze River low salt water in the vicinity of Jeju by considering the wind in the East China Sea according to its wind speed and direction.

As a low salt alarm system of the Jeju sea area of the present invention for achieving the above object, a wind speed database storing the wind speed data of the wind grating located at the line connecting the entrance to the Yangtze River and Jeju Island, and the wind grating from the wind speed database A central control unit for predicting salinity of seawater in the Jeju region, where the vertical component value of the average wind velocity is calculated by a linear operator, and outputting a signal for notifying when the predicted salinity is out of the set salinity range; A warning notification unit configured to receive an input and display it to the outside, and the central control unit receives wind speed data from the wind speed database and calculates an average wind speed of a wind grating located at a line connecting the entrance to the Yangtze River and Jeju Island; Receiving the vertical component value of the average wind speed of the wind speed calculation module; It characterized in that it comprises a salinity prediction module for calculating the salinity prediction value by the operator.

In addition, in the low salinity alarm system of the present invention, the central control unit receives the predicted value of the salinity prediction module and is out of the set salinity range, and receives the average wind speed data of the wind speed calculation module to move the seawater in the set area. It further comprises a seawater movement calculation module for predicting the path and outputting a signal for informing this.

(S : 염도 예측값, W_CDW : 양자강 입구와 제주도를 이은 선에 위치하는 바람격자에 대한 평균풍속의 수직 성분 값, a : 상기 W_CDW의 염도에 미치는 선형 계수, b : 염도 기본값인 상수)에 의해 산출되는 것을 특징으로 한다. In addition, in the low salinity alarm system of the present invention, the linear operator is

(S: salinity predicted value, W _CDW : vertical component value of mean wind velocity for wind grating located between the inlet of Yangtze River and Jeju Island, a: linear coefficient on salinity of W _CDW , b: constant which is the default salinity) It is characterized by.

Further, in the low salinity alarm system of the present invention, wind speed measuring means for measuring wind speed data of the wind grating located at the line connecting the entrance to the Yangtze River and Jeju Island, and weather information to check and store the measured value of the wind speed measuring means. Measurement server, salinity measuring means for measuring the salinity of Jeju sea, and salinity measuring server for checking and storing the measured value of the salinity measuring means, the wind speed data server is the wind speed data through the weather information measuring server It characterized in that the supply.

In addition, in the low salinity alarm system of the present invention, the wind speed data server, the wind speed data for the last 45 days is recorded, characterized in that it is periodically updated through the weather information measurement server.

Further, in the low salinity alarm system of the present invention, the linear coefficient a on the salinity of the W _CDW and the constant b which is the salinity default value are the least square method using the wind speed data of the wind speed data server and the measured salinity value of the salinity measurement server. It is characterized in that it is calculated by.

In the low salinity alarm system of the present invention, the linear coefficient a on the salinity of the W _CDW is -1.37, and the constant b, which is the salinity default value, is 32.83.

As described above, the present invention predicts the salinity of Korea, in particular, the sea area near Jeju Island by using the wind factors of the East China Sea, and warns it when the predicted salinity is out of the set range, thereby causing damage to aquatic products such as low salinity. There is an advantage to reduce.

1 is a block diagram illustrating a low salinity alarm system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a detailed configuration of the central control unit shown in FIG. 1.
3 is a view for explaining the wind component applied to this embodiment
4 is a view showing the distribution of the grid for salinity measurement in the waters near Jeju Island
5 is a view for explaining a GUI of the warning notification unit shown in FIG.
6 is a graph showing root mean square error (RMS) between predicted salinity and measured salinity according to the present embodiment
7 is a graph for explaining the change of salinity due to freshwater discharge and wind component

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Now, a low salinity alarm system according to an embodiment of the present invention will be described in detail with reference to the drawings, and the same or corresponding components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. .

1 is a block diagram for explaining a low salinity alarm system according to an embodiment of the present invention, Figure 2 is a block diagram for explaining the detailed configuration of the central control unit shown in Figure 1, Figure 3 is an embodiment 4 is a view for explaining the wind component applied to, Figure 4 is a view for showing a grid distribution of salinity measurement data in the sea near Jeju Island, Figure 5 is a view for explaining the GUI of the warning notification unit shown in FIG. 6 is a graph showing the root mean square error (RMS) between the predicted salinity and the measured salinity according to the present embodiment, and FIG. 7 is a graph for explaining the change of salinity due to freshwater discharge and wind component.

In the low salinity alarm system according to the present embodiment, a wind speed measuring means 41 for measuring wind speed data of a wind grating positioned at a line connecting the entrance to the Yangtze River and Jeju Island, and a meteorological condition for checking and storing the measured value of the wind speed measuring means. An information measuring server 40, a salinity measuring means 51 for measuring salinity in the Jeju sea area, a salinity measuring server 50 for checking and storing the measured value of the salinity measuring means 51, and the weather information The wind speed data source 10 receives the wind speed data from the measurement server 40 and stores the wind speed data, and the vertical component value of the average wind speed with respect to the wind grating from the wind speed database 10 is calculated using a linear operator. The central control unit 20 for predicting salinity of seawater and outputting a signal for notifying when the predicted salinity is out of the set salinity range, and receives a signal from the central control unit 20 Warning indicating this to include a notification unit (30).

The central control unit 20 receives wind speed data from the wind speed database 10 as shown in FIG. 2 and calculates an average wind speed of the wind lattice located at a line connecting the entrance to the Yangtze River and Jeju Island. And a salinity prediction module 22 which receives a vertical value of the average wind speed of the wind speed calculation module 21 and calculates a salinity prediction value by a linear operator, and receives a prediction value of the salinity prediction module 22 and sets a salinity range. If out, the seawater movement calculation module 23 for receiving the average wind speed data of the wind speed calculation module 21 and predicts the seawater movement path of the setting area and outputs a signal for informing this.

The wind speed database 10 records wind speed data for the last 45 days, and periodically updates the wind speed data through the weather information measurement server 40.

As described above, the low salinity alarm system of the present embodiment predicts salinity of Jeju sea water by the Yangtze River low salt water using wind components perpendicular to the line connecting the Yangtze River entrance and Jeju Island, as shown in FIG. Use a vertical wind component in a straight line from point 28 ° to 53.59 "N, 122 ° 01'27.81''E to point 33 ° 12'05.98" N, point 123 ° 59'23.01 "E. This is based on the principle that the surface water moves to the right 90 degrees.

Therefore, the wind speed data of wind gratings located in the waters near Jeju Island are checked.The wind speed data of wind gratings are provided from the National Centers for Environmental Prediction (NCEP) analysis winds and satellites of QuikSat in real time. The wind speed data of the period when the low salt water of the Yangtze River affects the Jeju sea due to the wind is periodically updated and recorded in the wind speed database 10.

The wind speed calculation module 21 of the central controller 20 acquires data from the wind speed database 10 to calculate the average wind speed of the wind grating located at the line connecting the entrance to the Yangtze River and Jeju Island, and the salinity prediction module 22. ) Receives a vertical component value of the average wind speed calculated by the wind speed calculation module 21 and calculates a salinity prediction value by a linear operator. The linear operator is implemented as in the following equation.

≪ Equation &

(S: salinity predicted value, W _CDW : vertical component value of mean wind velocity with respect to wind grating located between the inlet of Yangtze River and Jeju Island, a: linear coefficient affecting salinity of W _CDW , b: constant with salinity default)

The salinity can be predicted by the above equation, the linear coefficient a and the salinity default constant b are the minimum using the wind speed data of the wind speed database 10 and the measured salinity value of the salinity measurement server 50. It can be calculated by the square method. Therefore, when the linear coefficient a and the salinity default constant b are calculated using the least square method as the measured wind speed data and salinity values, 'a = -1.37 and b = 32.83' can be obtained.

It will be apparent to those skilled in the art that the linear coefficient a and the salinity default constant b may be changed by various factors such as environmental change.

When the salinity prediction value is calculated by the linear operator as described above, the salinity prediction module 22 determines whether the predicted value exists in the set salinity range, and if it does not exist, outputs a low salinity alarm and the warning notification unit 30 inputs it. Received and displayed externally.

The warning notification unit 30 may be implemented as a GUI as shown in FIG. Therefore, the user can check the average wind distribution and the predicted salinity value from time to time, and when the salinity predicted value is low salinity, the display and sound can be notified.

6 is a graph showing the salinity prediction value calculated by the low salinity alarm system of the present embodiment as described above and the measured salinity value by statistically measuring the root measn square error (RMS). It can be seen that it has some accuracy.

One embodiment of the present invention described above should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

10: wind speed DB 20: central control unit
21: wind speed calculation module 22: salinity prediction module
23: seawater movement calculation module 30: warning notification unit
40: meteorological information measurement server 50: salinity measurement server

Claims (7)

delete delete delete delete delete As low salt alarm system in Jeju sea area,
The wind speed database stores the wind speed data of the wind grating located at the line connecting the Yangtze River entrance to Jeju Island, and the salinity of the seawater of Jeju area calculated by the linear operator of the vertical component value at the average wind speed of the wind grating from the wind speed database. And a central control unit for predicting and outputting a signal for notifying when the predicted salinity is out of a set salinity range, and a warning notification unit for receiving a signal from the central control unit and displaying the signal to the outside.
The central control unit,
A wind speed calculation module that receives wind speed data from the wind speed database and calculates an average wind speed of a wind lattice positioned at a line connecting the entrance to the Yangtze River and Jeju Island; A salinity prediction module that receives a vertical component value of an average wind speed of the wind speed calculation module and calculates a salinity predicted value by the linear operator; A seawater movement calculation module that receives a predicted value of the salinity prediction module and receives a mean wind speed data of the wind speed calculation module to predict a moving path of the seawater in the set area and outputs a signal for informing the detected value; Including more,
The linear operator is the following equation,
[Equation]

(S: Salinity predicted value, W _CDW : Vertical component value of mean wind velocity for wind grating located at the line between Yangtze River Inlet and Jeju Island, a: Linear coefficient on salinity of W _CDW , b: Constant which is the default salinity)
Wind speed measuring means for measuring the wind speed data of the wind grating located on the line between the entrance to the Yangtze River and Jeju Island, a weather information measuring server to check and store the measured value of the wind speed measuring means, and to measure the salinity of Jeju sea Salinity measuring means for, and further comprising a salinity measuring server for checking and storing the measured value of the salinity measuring means,
The wind speed database is characterized in that the wind speed data is supplied through the weather information measurement server,
The wind speed database, the wind speed data of the last 45 days is recorded, and is periodically updated through the weather information measurement server,
The linear coefficient a on the salinity of the W _CDW and the constant b, the salinity default value, are calculated by the least-squares method using the wind speed data of the wind speed database and the measured salinity value of the salinity measurement server. Low salinity alarm system. The method of claim 6,
The linear coefficient a on the salinity of the W _CDW is -1.37,
Low salinity alarm system, characterized in that the default salinity constant b is 32.83.

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