WO2022092410A1 - Système de surveillance de concentration de sel à base de ctd - Google Patents

Système de surveillance de concentration de sel à base de ctd Download PDF

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Publication number
WO2022092410A1
WO2022092410A1 PCT/KR2020/017261 KR2020017261W WO2022092410A1 WO 2022092410 A1 WO2022092410 A1 WO 2022092410A1 KR 2020017261 W KR2020017261 W KR 2020017261W WO 2022092410 A1 WO2022092410 A1 WO 2022092410A1
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WO
WIPO (PCT)
Prior art keywords
electrical conductivity
sea water
seawater
electrode
sensor
Prior art date
Application number
PCT/KR2020/017261
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English (en)
Korean (ko)
Inventor
박종수
윤우현
Original Assignee
(주)우연시스템
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Publication date
Application filed by (주)우연시스템 filed Critical (주)우연시스템
Publication of WO2022092410A1 publication Critical patent/WO2022092410A1/fr

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D7/00—Indicating measured values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D7/00—Indicating measured values
    • G01D7/002—Indicating measured values giving both analog and numerical indication
    • 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
    • G01N27/07—Construction of measuring vessels; Electrodes therefor

Definitions

  • the present invention relates to a salt concentration monitoring technology, and more particularly, to a CTD (Conductivity, Temperature, Depth)-based salt concentration monitoring technology.
  • CTD Conductivity, Temperature, Depth
  • CTD (Conductivity, Temperature, Depth) measuring equipment is a basic marine equipment that measures vertical structures such as temperature, electrical conductivity and salinity by water depth in the ocean. It is the equipment you are looking for.
  • a dissolved oxygen amount sensor a pH sensor, or an optical sensor can be additionally attached to the CTD, and seawater can be sampled and analyzed at a certain depth using a water collector.
  • the salinity measurement method by electrical conductivity is a method of measuring using the point that the electrical conductivity is different depending on the amount of salt contained in seawater.
  • the current flowing through the sample is inversely proportional to the resistance and proportional to the electrical conductivity. It is a method of converting the measured electrical conductivity into the concentration of salt using Seawater is a strong electrolyte solution because almost all salts of strong acids or bases are dissolved. Therefore, using a salinity meter, measure the electrical conductivity of a seawater sample and standard seawater, and calculate the salinity from this electrical conductivity (conversion by electrical conductivity).
  • the salinity measurement method by electrical conductivity has advantages in that it is more sensitive than the chlorine content measurement method by the silver titration method, and can measure quickly and conveniently.
  • the conventional salinity measurement method using electrical conductivity has a problem in that, when a specific time is prolonged, ions are accumulated in the electrode, so that the electrical conductivity is lowered and an error in the salinity measurement value occurs.
  • the present invention has been devised to solve the above problems, and it is to provide a CTD-based salinity monitoring system that prevents errors in salinity measurement values due to the accumulation of ions in electrodes during salinity measurement using electrical conductivity. The purpose There is this.
  • the present invention for achieving the above object relates to a salt concentration monitoring system, an electrical conductivity sensor for detecting the electrical conductivity of seawater, a seawater temperature sensor for detecting the seawater temperature that is the temperature of seawater, and seawater pressure that is the pressure of seawater
  • a seawater pressure sensor for detecting a seawater pressure sensor, a database storing electrical conductivity, a salt concentration corresponding to seawater temperature and seawater pressure, receives an electric conductivity signal sensed by the electric conductivity sensor, and the seawater temperature sensed by the seawater temperature sensor
  • a control unit that receives a signal, receives a sea water pressure signal detected by the sea water pressure sensor, and receives a salinity concentration corresponding to the received electrical conductivity signal, sea water temperature signal, and sea water pressure signal from the database, to the control of the controller It includes a display unit for displaying the salinity concentration in accordance with and a transceiver for transmitting the salinity concentration to an external device according to the control of the controller.
  • the electrical conductivity sensor includes a first electrode having one side connected to a power source, a second electrode having one side connected to the ground, a first switch for switching between the power source and the first electrode, and the first electrode and the and a second switch for switching a bypass path between the second electrodes, and measure electrical conductivity through the first electrode and the second electrode.
  • the control unit controls the first switch and the second switch to be in an OFF state when measuring the electrical conductivity of seawater, measures the resistance between the first electrode and the second electrode N times, and any of the N measured resistance values When the difference between the two resistance values exceeds a predetermined reference value, the second switch may be turned on to perform a first discharge operation.
  • the controller may turn on the first switch for a predetermined time during the first discharging operation to perform a second discharging operation.
  • FIG. 1 is an overall configuration diagram of a CTD-based salt concentration monitoring system according to an embodiment of the present invention.
  • Figure 2 is a diagram showing the circuit structure of the electrical conductivity sensor in the CTD-based salt concentration monitoring system according to an embodiment of the present invention.
  • Figure 3 is a flow chart showing a CTD-based salt concentration monitoring method according to an embodiment of the present invention.
  • FIG. 4 is a perspective view showing a salt concentration sensing device according to an embodiment of the present invention.
  • FIG. 5 is an exploded cross-sectional view schematically showing the internal configuration of a salt concentration sensing device according to an embodiment of the present invention.
  • the present invention relates to a salt concentration monitoring system.
  • a database in which salinity concentrations corresponding to electrical conductivity, sea water temperature and sea water pressure are stored, receive an electrical conductivity signal sensed by the electrical conductivity sensor, and receive a sea water temperature signal sensed by the sea water temperature sensor, the seawater
  • a control unit for receiving the sea water pressure signal detected by the pressure sensor, and receiving a salinity concentration corresponding to the received electrical conductivity signal, sea water temperature signal and sea water pressure signal from the database, for displaying the salinity concentration according to the control of the control unit It includes a display unit and a transceiver for transmitting the salt concentration to an external device under the control of the control unit.
  • unit refers to a hardware component such as software, FPGA, or ASIC, and “unit” performs certain roles. However, “part” is not meant to be limited to software or hardware.
  • a “unit” may be configured to reside on an addressable storage medium and may be configured to refresh one or more processors.
  • part includes components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables.
  • components and “parts” may be combined into a smaller number of components and “parts” or further divided into additional components and “parts”.
  • FIG. 1 is an overall configuration diagram of a CTD-based salt concentration monitoring system according to an embodiment of the present invention.
  • the salt concentration monitoring system of the present invention includes an electrical conductivity sensor 110 , a sea water temperature sensor 120 , a sea water pressure sensor 130 , a control unit 140 , a database 150 , and a display unit 160 . , and a transceiver 170 .
  • the electrical conductivity sensor 110 serves to detect the electrical conductivity of seawater.
  • the sea water temperature sensor 120 serves to detect the sea water temperature, which is the sea water temperature.
  • the seawater pressure sensor 130 serves to sense seawater pressure, which is the pressure of seawater.
  • the control unit 140 receives the electrical conductivity signal Rm sensed by the electrical conductivity sensor 110, receives the sea water temperature signal Ts detected by the sea water temperature sensor 120, and the sea water pressure sensor 130 Receives the sensed sea water pressure signal Ps, and receives a salt concentration corresponding to the received electrical conductivity signal Rm, sea water temperature signal Ts, and sea water pressure signal Ps from the database 150 .
  • the control unit 140 transmits a control signal C C to the electrical conductivity sensor 110 , transmits a control signal C T to the sea water temperature sensor 120 , and a control signal C to the sea water pressure sensor 130 . D ) is transmitted.
  • the database 150 stores salinity concentrations corresponding to electrical conductivity, sea water temperature and sea water pressure.
  • the display unit 160 serves to display the salt concentration under the control of the controller 140 .
  • the transceiver 170 serves to transmit the salt concentration to an external device under the control of the controller 140 .
  • Figure 2 is a diagram showing the circuit structure of the electrical conductivity sensor in the CTD-based salt concentration monitoring system according to an embodiment of the present invention.
  • the electrical conductivity sensor 110 includes a first electrode 111 having one side connected to a power source 210 , a second electrode 112 having one side connected to the ground, a power source 210 and a second electrode 111 .
  • a first switch SW1 for switching between the first electrodes 111 and a second switch SW2 for switching a bypass path between the first electrode 111 and the second electrode 112 . is done by The electrical conductivity sensor 110 measures electrical conductivity through the first electrode 111 and the second electrode 112 .
  • the control unit 140 controls the first switch SW1 and the second switch SW2 to be off when the electrical conductivity of seawater is measured. Then, the resistance between the first electrode 111 and the second electrode 112 is measured N times, and when the difference between any two resistance values among the measured N resistance values exceeds a predetermined reference value, the second switch ( SW2) is turned on to control the primary discharge operation.
  • the controller 140 turns on the first switch SW1 for a predetermined time during the first discharge operation to perform a second discharge operation.
  • the first electrode 111 and the second electrode 112 detect electrical conductivity varying between both electrodes according to the concentration of salt, and may be made of a material such as copper or titanium.
  • the first electrode 111 and the second electrode 112 are electrically shorted, and accordingly, the first electrode 111 and Ions accumulated in the second electrode 112 may be discharged.
  • ions may remain in the first electrode 111 and the second electrode 112 despite the short circuit of the first electrode 111 and the second electrode 112 by the second switch through the first discharge operation. there is.
  • the ions remaining in the first electrode 111 and the second electrode 112 are removed by turning on the first switch SW1 in the secondary discharging operation to cut off the supplied power. can be completely discharged. Therefore, the reliability of the salinity measurement value can be improved.
  • Figure 3 is a flow chart showing a CTD-based salt concentration monitoring method according to an embodiment of the present invention.
  • FIG. 3 is an embodiment on the assumption that the resistance between the first electrode 111 and the second electrode 112 is measured three times. Resistance measurement may be performed a plurality of times (N times) three or more times, and resistance may be continuously measured at regular time intervals. At this time, if the difference between any two resistance values measured during a predetermined time period is greater than the preset reference value ⁇ R, the second switch SW2 may be turned on to perform the primary discharge operation.
  • the controller 140 measures the resistance between the first electrode 111 and the second electrode 112 three times ( S301 ). As a result, three resistance values R1, R2, and R3 which are resistance values at the time of each measurement are measured.
  • the second switch SW2 is turned on to perform a primary discharge operation (S303, S305, S307, S317).
  • the resistance may be continuously measured at a predetermined time interval. At this time, if the difference between any two resistance values measured during a predetermined time period is greater than the preset reference value ⁇ R, the second switch SW2 may be turned on to perform the primary discharge operation.
  • the first switch SW1 may be turned on for a predetermined time to perform a secondary discharging operation ( S319 ).
  • the remaining ions remaining in the electrodes 111 and 112 can be completely discharged through this secondary discharge operation, thereby increasing the reliability of the salinity measurement value.
  • if the difference between two or more resistance values is greater than ⁇ R, the first switch SW1 is turned on to perform a secondary discharge operation.
  • control unit 140 receives the sea water temperature signal Ts from the sea water temperature sensor 120, and receives the sea water pressure signal Ps from the sea water pressure sensor 130 (S311).
  • the average resistance (Rm), the sea water temperature (Ts), the salt concentration (Sc) corresponding to the sea water pressure (Ps) is received from the database 150 (S313).
  • the salt concentration is displayed through the display unit 160 or transmitted to the outside through the transceiver unit 170 (S315).
  • an example of an actual implementation of the electrical conductivity sensor 110 , the sea water temperature sensor 120 , and the sea water pressure sensor 130 is as follows.
  • Figure 4 is a perspective view showing a salinity concentration sensing device according to an embodiment of the present invention
  • Figure 5 is an exploded cross-sectional view schematically showing the internal configuration of the salinity concentration sensing device according to an embodiment of the present invention.
  • the salinity concentration sensing device 1 according to an embodiment of the present invention is implemented in the form of a buoy.
  • the salt concentration sensing device 1 is provided in the form of a hollow sphere and is configured to be separated into an upper portion 10 and a lower portion 20 .
  • the electrical conductivity sensor 110 , the sea water temperature sensor 120 , and the sea water pressure sensor 130 are connected to the lower part 20 and have a structure that is drawn out into the water. That is, a through hole is formed in the lower portion 20 so that the electrical conductivity sensor 110 , the sea water temperature sensor 120 , and the sea water pressure sensor 130 can be withdrawn into the water, and these through holes are formed in a packing material (not shown). ) to maintain watertightness by the configuration.
  • electrical conductivity of seawater, seawater temperature, and seawater pressure information is collected through the electrical conductivity sensor 110 , the seawater temperature sensor 120 , and the seawater pressure sensor 130 , and the collected information is the circuit in the upper part 10 . It is wired so that it can be applied to the microcomputer mounted on the board 5 .
  • the upper part 10 is a watertight filler 15 for maintaining watertightness in a state in which a solar cell, a solar panel, is attached along a curved surface on the outer surface, and a circuit board 5 and a wireless repeater 3 equipped with a microcomputer are mounted on the inner surface. is filled
  • Urethane foam is used as the watertight filler 15, and the watertight filler 15 serves to protect the internal circuit while not affecting the buoyancy even when the upper portion 10 is damaged by an external force.
  • the upper part 10 forms a through hole so that the antenna 3a of the wireless repeater 3 can protrude to the outside on the upper side.
  • the lower part 20 is configured to be filled with a weight filler 25 for maintaining balance in a state in which the charge controller constituting the solar power supply and the battery are mounted. At this time, the charge controller applies power generated through the solar cell to the circuit board 5 and the wireless repeater 3 and serves to charge the surplus power to the battery, and the battery may be a normal storage battery. .
  • the lower part 20 is coupled to the upper part 10, and the balance weight 24, which is a heavy object for balance maintenance, is connected to the wire 23 so that the center of gravity is located in the lower part in a state of floating on the sea level.
  • the lower part 20 is integrally formed with a connecting ring 22 in the center of the lower side of the outer surface, and the connecting ring 22 has a balance weight 24 that is a heavy object made of metal or ore having a predetermined weight and a wire 23 ) is a structure connected by This balance weight 24 prevents the lower part 20 from moving rapidly by the current in a state that is vertically stretched by the load, and by appropriately adjusting the length of the wire 23 and the weight of the balance weight 24, the ship's It can serve as an anchor.

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

La présente invention concerne un système de surveillance de concentration de sel comprenant : un capteur de conductivité électrique servant à détecter la conductivité électrique d'eau de mer ; un capteur de température d'eau de mer servant à détecter une température d'eau de mer qui est la température d'eau de mer ; un capteur de pression d'eau de mer servant à détecter la pression d'eau de mer qui est la pression d'eau de mer ; une base de données dans laquelle sont mémorisées des concentrations de sel correspondant à la conductivité électrique, à la température d'eau de mer et à la pression d'eau de mer ; une unité de commande qui reçoit un signal de conductivité électrique détectée par le capteur de conductivité électrique, qui reçoit un signal de température d'eau de mer détectée par le capteur de température d'eau de mer, qui reçoit un signal de pression d'eau de mer détectée par le capteur de pression d'eau de mer, et qui reçoit des concentrations de sel correspondant au signal de conductivité électrique, au signal de température d'eau de mer et au signal de pression d'eau de mer reçus en provenance de la base de données ; une unité afficheur servant à afficher les concentrations de sel sous la commande de l'unité de commande ; et une unité émetteur-récepteur servant à transmettre les concentrations de sel à un dispositif externe sous la commande de l'unité de commande. Selon la présente invention, il existe un effet selon lequel, lors de la mesure d'une concentration de sel à l'aide de la conductivité électrique, il est possible d'empêcher une diminution de la conductivité électrique due aux ions s'accumulant dans une électrode et d'empêcher l'apparition d'une erreur dans des valeurs de mesure de concentration de sel.
PCT/KR2020/017261 2020-10-27 2020-11-30 Système de surveillance de concentration de sel à base de ctd WO2022092410A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200140420A KR102437532B1 (ko) 2020-10-27 2020-10-27 Ctd 기반 염분 농도 모니터링 시스템
KR10-2020-0140420 2020-10-27

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WO2022092410A1 true WO2022092410A1 (fr) 2022-05-05

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Publication number Priority date Publication date Assignee Title
CN114719914B (zh) * 2022-06-08 2022-08-19 青岛道万科技有限公司 一种便于携带的温盐深测量仪及其方法
KR102604843B1 (ko) * 2022-12-01 2023-11-23 대한민국 Ctd 관측 정보 보정 방법 및 장치

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KR100629320B1 (ko) * 2004-07-16 2006-09-29 한국해양연구원 차동형 염분 센서 및 이를 이용한 염분 측정 장치
KR100853925B1 (ko) * 2007-01-19 2008-08-25 엘지전자 주식회사 이온 전도도를 이용한 염분농도 측정 장치 및 그 방법
US20100274491A1 (en) * 2007-07-24 2010-10-28 Biota Guard As Method and apparatus for monitoring offshore contamination
KR20100122538A (ko) * 2009-05-13 2010-11-23 이동학 해양관측장치
KR102049599B1 (ko) * 2017-11-22 2019-11-27 수상에스티(주) 해양 모니터링용 드론

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KR100831331B1 (ko) 2007-04-30 2008-05-22 주식회사 지원하이텍 뜨겁거나 차가운 식품의 직접적인 염도측정이 가능한 식품염도 측정 장치
KR101108276B1 (ko) 2009-02-02 2012-01-31 경북대학교 산학협력단 다중 수질 모니터링 센서

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100629320B1 (ko) * 2004-07-16 2006-09-29 한국해양연구원 차동형 염분 센서 및 이를 이용한 염분 측정 장치
KR100853925B1 (ko) * 2007-01-19 2008-08-25 엘지전자 주식회사 이온 전도도를 이용한 염분농도 측정 장치 및 그 방법
US20100274491A1 (en) * 2007-07-24 2010-10-28 Biota Guard As Method and apparatus for monitoring offshore contamination
KR20100122538A (ko) * 2009-05-13 2010-11-23 이동학 해양관측장치
KR102049599B1 (ko) * 2017-11-22 2019-11-27 수상에스티(주) 해양 모니터링용 드론

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