KR20030045420A - The measuring system for water quality - Google Patents

Abstract

PURPOSE: A water quality measuring system is provided, thereby measuring water quality at a long distance and correcting a water quality measuring sensor automatically. CONSTITUTION: A water quality measuring system comprises a measuring vessel(100) containing a sensor; a measuring water supplying pipe(104) supplying water to the measuring vessel(100); a circulation pipe(275) connected to the inlet and outlet of the measuring vessel(100) to form channels(101) and circulating the measuring vessel(100); a circulation pump(271) installed in a center of the circulation pipe(275); one or more of a correction liquid supplying means connected to the circulation pipe(275) between the inlet of the circulation pump(271) and the outlet of the measuring vessel(100) to supply the correction liquid to the measuring vessel(100); a draining pipe(102) connected to the outlet of the measuring vessel(100); a plurality of valves opening/shutting channels(101); and a controlling portion controlling the correction liquid supplying means, the circulation pump(275) and the valves.

Description

Water Quality Measurement System {THE MEASURING SYSTEM FOR WATER QUALITY}

The present invention relates to a system for water quality management, and more particularly, to measure water quality at a remote location, and to a water quality measurement system in which calibration of a sensor for measuring water quality can be made automatically.

Currently, the environmental field, especially the water quality field, collects samples for periodic water quality surveys at various points of the water supply and sewage system in order to provide clean drinking water to the people or to investigate the water environment for water and sewage sources. In this way, the samples collected at each point are transported to a place equipped with an experimental device, such as a laboratory, for water quality analysis using various types of sensors.

That is, conventionally, in order to collect data on environmental data, a user must directly collect a sample at various points of water and sewage source, or measure water quality while carrying various kinds of measuring devices.

As a result, telemetry devices that can measure the water quality from a long distance by using sensors on the water side and water lines have appeared, but the cost of system construction was excessive. Due to this, the periodic calibration required by the sensors was performed manually, which made it difficult for the operator to search and calibrate the sensors installed at the remote site in order to calibrate the sensors. There is a problem such as lowering the sensing capacity of the sensor is reduced or the life of the sensor is shortened.

An object of the present invention for solving the above problems is to provide a water quality measurement system that can measure the water quality at a remote location, the correction of the sensor for water quality measurement can be made automatically.

1 is an overall block diagram illustrating a water quality measurement system according to the present invention.

Figure 2 is a detailed configuration for explaining the water quality measurement apparatus of the water quality measurement system according to the present invention.

3 is a block diagram for explaining a control block of the water quality measuring apparatus of FIG.

4 is a detailed flowchart illustrating a sensor calibration process according to the present invention.

5 is a detailed flowchart illustrating a washing process according to the present invention.

6 is a detailed flowchart illustrating a drainage process according to the present invention.

7 is a detailed flowchart illustrating a dissolved oxygen correction process according to the present invention.

8 is a detailed flowchart for explaining a water quality measurement process according to the present invention.

9 is a detailed flowchart illustrating a sample storage process according to the present invention.

10 is a detailed flowchart illustrating the ion measurement process according to the present invention.

Explanation of symbols on the main parts of the drawings

A: measuring device B: central control unit

C: Management System 11: Internet

12: dedicated line 20: communication server

30: base station 40: mobile phone

410: input unit 421: PH detection unit

422: dissolved oxygen detection unit 423: ion detection unit

424: turbidity detection unit 425: temperature detection unit

426: conductivity detection unit 431: measuring container water level detection unit

432: washing water level detection unit 433: distilled water level detection unit

434: sample water level detection unit 450: control unit

461: first valve driving unit 462: second valve driving unit

463: pump driving unit 464: stirring mechanism driving unit

471: wireless communication unit 480: wired communication unit

491: alarm

The water quality measurement system according to the present invention for achieving the above object is to form a measuring vessel equipped with a sensor for measuring water quality, a measuring water supply pipe connected to supply the measuring water to the measuring vessel, and a flow path circulating the measuring vessel. Circulation between the circulating pump outlet and the inlet of the measuring vessel so that both ends are connected to the inlet and outlet of the measuring vessel, the circulating pump installed in the middle of the circulating tube, and the correction liquid for the correction of the water quality sensor to the measuring vessel. One or more correction liquid supply means connected to the pipe, a drain pipe connected to the outlet side of the measurement container for drainage of the measurement container, and a plurality of valves for opening and closing each flow path, and operating the correction liquid supply means, the circulation pump and the valve. It characterized in that it comprises a control unit for controlling.

Hereinafter, with reference to the accompanying drawings to describe the present invention in detail.

1 is a block diagram illustrating a water quality measurement system according to the present invention.

Referring to FIG. 1, the water quality measurement measuring system according to the present invention includes a plurality of water quality measuring apparatuses A installed at positions where water quality is to be measured, and a central control unit for wired and wireless communication with the plurality of water quality measuring apparatuses A. FIG. (B) and a plurality of management control units (C) connected to the central control unit (B) to transmit commands or monitor water quality.

In addition, the central control unit B of the water quality measurement system according to the present invention is connected to the communication server 20 via the Internet 11 or a dedicated line 12 to transmit a message to the administrator. The communication server 20 transmits a message transmitted from the central control unit B through the Internet 11 or a dedicated line 12 to the manager's mobile phone 40 or PDA 50 through the base station 30. Send it.

Figure 2 is a detailed explanatory diagram for explaining the water quality measuring apparatus according to the present invention.

Referring to FIG. 2, the water quality measuring apparatus A according to the present invention includes a measuring container 100 for storing a liquid for measuring water quality and an agitator 110 for stirring the liquid stored in the measuring container 100. do. The measuring vessel 100 includes a measuring vessel level detection unit for detecting various sensors and the water level to be described later. In addition, a flow path is formed outside the measurement container 100 so that liquid can be introduced or discharged. The lower flow path of the measurement container 100 controls a three-way valve 121 for controlling the discharge of the liquid of the measurement container 100. And a pump 123 for circulating the liquid on the flow path, and electric valves 124 and 125 for adjusting the liquid flowing into the measuring container 100, and injecting air into the flow path. An electric valve 122 is installed between the three-way valve 121 and the pump 123 to be pulled out.

In addition, the water quality measuring apparatus according to the present invention includes a plurality of correction liquid storage container for supplying the correction liquid to the measuring container 100 and an electric valve for outflow or blocking of the correction liquid from the correction liquid storage container. The correction liquid storage container includes a first storage container 210 for storing a PH4 solution, a second storage container 220 for storing a PH7 solution, a third storage container 230 for storing a PH10 solution, and , The fourth storage container 240 for storing the conductivity correction liquid, the fifth storage container 250 for storing the first ion correction liquid, and the sixth storage container 260 for storing the second ion correction liquid. ).

In addition, a plurality of electric valves 211, 221, 231, 241, 251, and 261 may be used to adjust the amount of the correction liquid stored in the first to sixth storage containers 210 to 260 to flow into the flow path 101. 260 is provided at the bottom. The electric valves 211, 221, 231, 241, 251 and 261 are connected to a flow path between the electric valve 124 and the electric valve 125.

In addition, the water quality measuring apparatus according to the present invention includes a seventh storage container 270 for storing the ISA solution, the quantitative supply means to quantitatively supply the ISA solution stored in the seventh storage container to the measuring container 100 It includes.

The quantitative supply means includes a circulation pipe 275 connected at both ends to an inlet and an outlet of the seventh storage container 270 so as to form a flow path for circulating the seventh storage container 270 filled with the ISA solution, and the circulation A pump 271 provided in the middle of the pipe 275 and circulating the ISA solution, a three-way valve 271 provided in the middle of the circulation pipe 275 downstream of the pump 271, and the three-way valve 273. The injection pipe 276 is branched from and connected to the measuring container 100, and installed in the circulation pipe between the three-way valve 273 and the pump 271, the between the three-way valve (273) Three-way valve 272 spaced a predetermined distance from the three-way valve 273 and the two-way valves 272 and 273 after switching between the three-way valves 272 and 273 to accommodate the ISA solution in the circulation pipe. 3) to force the ISA solution of the amount filled between the to the measuring container 100 toward the It includes air injection means connected to the valve 272, pump 274.

In addition, the water quality measuring apparatus according to the present invention, a distilled water storage container 310 for storing distilled water and a pump 311 for forcibly injecting air into the distilled water stored in the distilled water storage container 310, and the flow path 101 An electric valve 312 is provided between the distilled water storage container 310 and the flow path 101 to supply distilled water to the distilled water. And the water quality measuring apparatus (A) according to the present invention is provided with a washing water storage container 320 for storing a predetermined amount of washing water, so as to supply the washing water for washing the measuring container 100 and the flow path (101). An electric valve 322 is provided in the pipe between the flow path 101 and the washing water storage container 320, and the washing water supply pipe 321 is connected to the washing water storage container 320 to receive the washing water from the outside. In addition, an electric valve 322 for opening and closing the washing water supply pipe 321 is provided.

In addition, the drain pipe is connected to the three-way valve 121 provided on the outlet side of the measuring container 100 for drainage of the measuring container 100, the electric valve 331 and the opening and closing the drain pipe 102 and A pump 333 for drainage is provided, and a branch pipe 103 branched from the drain pipe 102 to return the liquid in the drain pipe 102 to the measuring container 100 on the discharge side of the pump 333. A three-way valve 334 for controlling the flow path of the branch pipe is provided. In addition, the measurement water supply pipe 104 is connected to the drain pipe 102 through the three-way valve 332 to supply the measured water to the measuring container 100 through the branch pipe 103 branched from the drain pipe 102. do.

Meanwhile, in the middle of the drain pipe 102, a branch pipe 104 branched from the drain pipe 102 and a plurality of electric valves 351 for opening and closing the branch pipe 104 so as to store a predetermined amount of drained measurement water. 361, 371, and a plurality of reservoirs 350, 360, 370, which are connected to the branch pipe 104 and store the sample water according to the opening and closing of the electric valves 351, 361, 371, which may be Can be increased or decreased.

3 is a block diagram illustrating a water quality measuring apparatus according to the present invention.

Referring to FIG. 3, the water quality measuring device A includes a controller 450 for controlling the overall operation. The controller 450 is electrically connected to an input unit 410 for receiving information or an operation command from an administrator. The input unit 410 may use various media for inputting information such as a keypad, a remote controller, a floppy disk, an RF card, and a flash memory.

In addition, the control unit 450 is connected to the sensor means 420 for detecting the number of measurements stored in the measuring container (100). The sensor means 420 may include a PH detector 421 for detecting the PH of the measured water stored in the measuring container 100, a dissolved oxygen detector 422 for detecting the dissolved oxygen amount DO of the measured water; An ion detecting unit 423 for detecting ions of the measured water, a turbidity detecting unit 424 for detecting turbidity of the measured water, and a temperature detecting unit 425 for detecting the temperature of the measured water.

In addition, the washing water level detection for detecting the water level of the measuring vessel level detection unit 431 and the washing water storage container 320 installed in the measuring vessel 100 to detect the level of the measured water stored in the measuring vessel 100. The distilled water level detecting unit 433 for detecting the water level of the distilled water storage container 310 and the sample water level detecting unit 434 for detecting the water level of the sample of the measured water are electrically connected to the control unit 450. Connected.

In addition, a first valve driver 461 for opening and closing each electric valve, a second valve driver 462 for driving a three-way valve are connected to the control unit 450, and a pump driver 463 for controlling the driving of each pump; The stirring mechanism driving unit 464 for driving the stirrer 110 provided in the measuring container 100 is connected to the control unit 450. In addition, the antenna 472 and the wireless communication unit 471 for wireless communication with the central control unit B, the wired communication unit 480 for wired communication, and a lamp 492 to visually alert the speaker 493 The alarm unit 491 that alerts the user through an alarm is connected to the control unit 450.

Hereinafter will be described the operation of the water quality measurement system according to the present invention.

4 is a flowchart illustrating the correction of each sensor, that is, the PH detecting unit 421, the ion detecting unit 423, and the conductivity detecting unit 426. As an example, the correction of the PH detecting unit 421 will be described. .

Referring to FIG. 4, the controller 450 loads and sets data related to preset sensor correction from the storage unit 440 so as to control each electric valve for sensor correction (S10). At this time, the control unit 450 controls the opening and closing of each electric valve by controlling the first and second valve driving unit (461 and 462) according to the data, first, the electric valve to inject the PH4 correction liquid into the measuring vessel (100) Opens the 211 and the electric valve 125, and closes all remaining valves. Accordingly, the PH 4 correction liquid stored in the first storage container 210 is introduced into the measuring container 100 (S20).

The control unit 450 detects the water level through the measuring container water level detecting unit 431 in order to measure the water level of the PH 4 correction liquid introduced into the measuring container 100 (S30). In addition, the controller 450 determines whether the detected level reaches a preset level (S40). When it is determined that the detected water level reaches the set water level in step S40, the controller 450 closes the electric valve 211 to block the input of the PH4 correction liquid (S50).

After the PH4 correction liquid is blocked, the controller sets the output signal of the PH sensing unit 421 to the reference value of the PH4 (S60) and stores it in the storage unit 440. At this time, the control unit 450 transmits the data of the reference value set through the wireless communication unit 471 to the central control unit (B).

After setting the reference value in step S60, the control unit 450 sets the number of correction liquid collection to recover the PH4 correction liquid contained in the measurement container 100 to the first storage container 210 (S70). In step 70, the control unit 450 loads data about the number of times of recovery from the storage unit 440 and controls the opening and closing of the pump and the electric valve accordingly. At this time, the control unit 450 controls the first valve driving unit 461 to close the electric valve 125 on the flow path 101, open the three-way valve 121 and the electric valve 124, the first storage container 210 ) To open the electric valve 211 (S80). The control unit 450 drives the pump driving unit 463 to operate the pump 123 to recover the PH 4 correction liquid contained in the measuring container 100 to the first storage container 210 (S80).

In order to complete the recovery of the PH 4 correction liquid, the controller 450 detects the level of the PH 4 correction liquid of the measurement container 100 through the measurement container level detection unit 431 (S100). In operation S110, it is determined whether the number of EKs is completed at the detected water level. When it is determined in step S110 that the recovery is completed, the control unit 450 performs the washing step 120 for washing the measuring container 100 and the flow path 101.

In addition to the correction by the PH4 correction liquid, the PH7 and PH10 correction liquid, and the conductivity and ion correction processes are the same as the above-described processes.

5 is a detailed flow chart for explaining the washing step (S120).

Referring to FIG. 5, the controller 450 loads preset data stored in the storage unit 440 to perform washing settings (S121). In addition, the control unit 450 opens and closes the electric valve necessary for cleaning according to the loaded data (S122). In step S122, the controller 450 controls the second valve driver 462 to close the three-way valve 121, and controls the first valve driver 461 to control the electric valves 124 and 125 on the flow path 101. Open the, and open the electric valve 323 for supplying the wash water. Then, after opening and closing the electric valve, the control unit 450 controls the pump driving unit 463 to operate the pump 123 (S123). When the pump 123 is operated, the washing water contained in the washing water storage container 320 is introduced into the measuring container 100 through the flow path 101.

After the pump operation, the control unit 450 detects the water level of the measuring container 100 through the measuring container water level detecting unit 431 (S124). In addition, the controller 450 determines whether the detected level reaches a preset level (S125). When it is determined that the detected water level reaches the set water level in step S125, the controller 450 controls the pump driving unit 463 to stop the operation of the pump 123 (S126).

After stopping the pump, the controller 450 controls the stirring mechanism 464 to operate the stirrer (S127). In addition, the control unit 450 sets the circulation of the washing water according to the data stored in the storage unit 440 (S128) and controls the second valve driving unit 462 to open the three-way valve 121 (S129). In addition, the control unit 450 controls the pump driving unit 463 to operate the pump 123 (S130). Accordingly, the washing water in the measuring container 100 is circulated through the flow path (101).

The controller 450 determines whether a predetermined time elapses for the washing completion (S131). If it is determined in step S131 that the predetermined time has elapsed, the controller 450 controls the pump driving unit 132 to stop the operation of the pump 123 (S132).

Meanwhile, the controller 450 detects the water level of the washing water storage container 420 through the washing water level interception unit 432 (S141). The controller 450 determines whether the detected water level is equal to or less than the water level set for replenishing the washing water (S142). If it is determined in step S142 that the detected water level is lower than or equal to the set water level, the control unit 450 sets the washing water replenishment setting S143 according to the data stored in the storage unit 440 to replenish the washing water, and sets the first valve driving unit 461. Control to open the electric valve 322 (S144). Accordingly, the washing water is replenished to the washing water storage container 320 through the washing water supply pipe 321.

The control unit 450 detects the level of the washing water storage container 420 through the washing water level interlining unit 432 to determine the completion of washing water replenishment (S141). In addition, the controller 450 determines whether the washing water replenishment is completed (S146). In step S146, the controller 450 determines that the washing water has been replenished when the detected water level is higher than or equal to the level set for replenishing the washing water. When it is determined in step S146 that the washing water has been replenished, the control unit 450 controls the first valve driving unit 461 to close the electric valve 322 (S147).

When the process is completed, the control unit 450 performs the drainage step 150 of the washing water.

6 is a detailed flow chart for explaining the drainage step (S150) according to the present invention.

Referring to FIG. 6, in order to drain water, the controller 450 sets drainage according to the data stored in the storage unit 440 (S151). The control unit 450 opens and closes each valve according to the drainage setting (S152). In step S152, the control unit 450 controls the second valve driving unit 462 to switch the three-way valve 121 to the drain pipe 102, and to switch the three-way valves 332 and 334 to the drain side. The control unit then closes all remaining valves. When the opening and closing of the valve is completed, the control unit 450 controls the pump driving unit 463 to operate the pump 333 (S153).

When the pump 333 is operated, the control unit 450 detects the water level of the measuring container 100 through the measuring container level detecting unit 431 to determine the completion of drainage (S154). The controller 450 determines whether the drainage is completed according to the detected water level (S155). If it is determined in step S155 that the drainage is completed, the controller 450 controls the pump driving unit 463 to stop the operation of the pump 333 (S156). The control unit 450 controls the first and second valve driving units 461 and 462 to close all the valves (S157).

7 is a detailed flowchart for explaining dissolved oxygen correction.

Referring to FIG. 7, the controller 450 operates the pump 311 by controlling the pump driver 463 in order to forcibly inject air into the distilled water storage container 310 (S210). When the pump 311 is operated, oxygen is dissolved in distilled water while air is injected into the distilled water. The controller 450 determines whether a predetermined time elapses (S220). If it is determined in step S220 that the predetermined time has elapsed, the controller 450 controls the pump driving unit 463 to stop the operation of the pump 311 (S230).

After the operation of the pump 311 is stopped, the control unit 450 opens and closes the valve according to the data stored in the storage unit 440 (S240). In operation S240, the controller 450 controls the second valve driver 462 to close the three-way valve 121, controls the first valve driver 461 to provide an electric valve 312 for supplying distilled water, The electric valves 124 and 125 on the flow path 101 are opened. The controller 450 controls the pump driver 463 to operate the pump 123 (S250).

When the pump 123 is operated, distilled water stored in the distilled water storage container 310 is introduced into the measuring container 100 through the flow path 101. The control unit 450 detects the level of the distilled water flowing into the measuring container 100 through the measuring container water level detecting unit 431 (S260). In addition, the controller 450 determines whether the detected water level reaches a preset water level (S270).

When it is determined that the detected water level reaches the set water level in step S270, the controller 450 controls the pump driving unit 463 to stop the operation of the pump 123 (S280). In addition, the control unit 450 closes the electric valve that is open by controlling the first valve driving unit (S290).

The controller 450 corrects the dissolved oxygen detecting unit 422 according to the output of the dissolved oxygen detecting unit 422 (S300). At this time, the control unit 450 stores the data according to the correction in the storage unit 440, and transmits the data to the central control unit (B) through the antenna 472 and the wireless communication unit 471. And the control unit 450 drains the distilled water contained in the measuring container 100 (S310). At this time, the drainage step (S310) is made by the same process as the drainage shown in FIG. In addition, the control unit 450 may recover the distilled water storage container 310 without draining distilled water.

8 is a detailed flowchart illustrating the water quality inspection process of the measurement water according to the present invention.

Referring to FIG. 8, the control unit 450 sets measurement of the number of measurements (S410). In operation S410, the control unit 450 sets measurement according to the data stored in the storage unit 440.

The controller 450 controls the opening and closing of each valve by controlling the first and second valve driving units 461 and 462 according to the measurement setting (S420). In step S420, the control unit 450 controls the second valve driving unit 462 to introduce the measured water, closes the three-way valve 121, and switches the three-way valves 332 and 334 to settings for inflow of the measured water. Let's do it. At this time, the remaining valves are all closed. After opening and closing the valve, the control unit 450 controls the pump driving unit 463 to operate the pump 333 (S430). When the pump 333 is operated, the measurement water passes through the measurement water supply pipe 104, the drain pipe 102, and the branch pipe 103 in sequence and flows into the measurement container 100.

After the operation of the pump 333, the control unit 450 detects the level of the measured water flowing through the measuring container level detector 431 (S440). In addition, the controller 450 determines whether the detected water level reaches a preset water level (S450). When it is determined that the detected water level reaches the set water level in step S450, the controller 450 controls the pump driving unit 463 to stop the operation of the pump 33 (S460) and the second valve driving unit 462. By controlling the three-way valve (332 and 334) is closed (S470).

In addition, the controller 450 controls the stirring mechanism 464 to stir the measuring water to operate the stirrer 110 (S480). After starting the stirrer, the control unit 450 determines whether a predetermined time elapses (S490). If it is determined in step S490 that the predetermined time has elapsed, the controller 450 controls the stirring mechanism 464 to stop the operation of the stirrer 110 (S500).

When the stirrer 110 is stopped, the controller 450 controls each sensor, that is, the PH detector 421, the dissolved oxygen detector 422, the turbidity detector 424, the temperature detector 425, and the conductivity detector 426. Detects the state of the measured number through (S510). The measurement state detection in step S510 may be performed simultaneously or sequentially through the respective sensors.

After detecting the measured number state in step S510, the controller 450 determines whether a value detected through each sensor is equal to or greater than a preset preset value (S520).

If it is determined in step S520 that the detected value is greater than or equal to the set value, the controller 450 drives the alarm 491 to provide a visual alarm through the lamp 492, and performs an audio alarm through the speaker 493. (S530). In addition, the controller 450 transmits an alarm message to the central controller B through the antenna 472 and the wireless communication unit 471. Accordingly, the central control unit (B) transmits an alarm message to the management system (C). In addition, the central control unit (B) transmits the alarm message and the unique number of the administrator to the communication server 20 through the Internet 11 or a dedicated line 12 so as to send an alarm message to the administrator. Accordingly, the communication server 20 transmits an alarm message, that is, a text message, to the administrator's mobile phone 40 or PDA 50 having the unique number through the base station 30. The alarm message allows the administrator to recognize the alarm occurrence in the water quality measurement device even at a remote location.

After the alarm, the control unit 450 performs a sample storage step (S540) of the measured water.

After the sample storage step (S540), the control unit 450 stores the state data of the detected measurement number in the storage unit 440, and transmits the state data to the central control unit B through the antenna 472 and the wireless communication unit 471. (S560). At this time, the state data of the measured number may be transmitted to the mobile phone 40 or the PDA 50 of the manager in the same manner as the alarm operation described above.

And after the sample storage is carried out the drainage step of draining the remaining measuring water in the measuring container (100) (S570). At this time, the drainage step is the same as the drainage step shown in FIG.

9 is a detailed flowchart for explaining a sample storage step (S540) according to the present invention.

Referring to FIG. 9, the control unit 450 sets the sample storage according to the data stored in the storage unit 440 (S541). According to the setting, the control unit 450 controls the opening and closing of each valve by controlling the first and second valve driving units 461 and 462 (S542). In step S542, the control unit 450 controls the second valve driving unit 462 to switch the three-way valve 121 to the drain pipe 102 and close the three-way valve 332. The control unit 450 controls the first valve driving unit 461 to open the electric valve 331, and any one of the electric valves provided in the branch pipe 105 branched from the drain pipe 102, for example, an electric valve ( 361) open. Accordingly, the measurement water contained in the measurement container 100 is stored in the storage container 350.

The control unit 450 detects the level of the measured water stored in the storage container 350 through the sample level detecting unit 434 and determines whether the detected level reaches a predetermined level (S543). If it is determined that the water level detected in step S543 has reached the predetermined water level, the control unit 450 controls the first valve driving unit 461 to close the electric valve 351. Then, the second valve driving unit 462 is controlled to switch the closed three-way valves 332 and 334 to the drain side (S544).

The controller 450 controls the pump driving unit 463 to operate the pump 333 (S545). Accordingly, the measurement water in the measuring container 100 is drained. In order to determine the completion of drainage, the control unit 450 detects the water level through the measurement vessel level detection unit 431 (S546), and determines whether the drainage is completed according to the detected water level (S547). If it is determined in step S547 that the drainage is completed, the control unit 450 controls the first valve driving unit 461 in order to drain the measurement water remaining in the branch pipe 105 to the electric valve of the measuring vessel 100 side ( 331 is closed to open the electric valve 351 on the storage container 350 side (S548). Accordingly, the measured water remaining in the branch pipe 105 while the air is sucked from the storage container 350 is drained through the drain pipe (102).

In addition, the control unit 450 determines whether a predetermined time elapsed so that the measurement number remaining in the branch pipe 105 is completely drained (S549). If it is determined in step S549 that the predetermined time has elapsed, the controller 450 controls the pump driving unit 463 to stop the pump 333 (S550). Then, the first and second valve driving units 461 and 462 are controlled to close each valve.

10 is a detailed flowchart for ion measurement according to the present invention.

The control unit 450 sets up the ion concentration measurement according to the data stored in the storage unit 440 (S610). According to the setting, the controller 450 controls the opening and closing of each valve by controlling the first and second valve driving units 461 and 462 (S620). In step S620, the control unit 450 controls the second valve driving unit 462 to close the three-way valve 121 provided at the outlet of the measurement container 100, and the three-way valves 332 and 334 provided in the drain pipe 102. Switch so that the measured water flows in. The controller 450 controls the pump driver 463 to operate the pump 333 (S630). Accordingly, the measuring water flows into the measuring container 100 through the drain pipe 102 and the branch pipe 103.

When the measuring water flows into the measuring container 100, the control unit 450 detects the water level through the measuring container level detecting unit 431 (S640). The controller 450 determines whether the detected water level has reached the set water level (S650). When it is determined that the detected water level reaches the set water level in step S650, the controller 450 controls the pump driving unit 463 to stop the operation of the pump 333 (S660). After the pump 333 is stopped, the control unit 450 controls the second valve driving unit 462 to close the three-way valves 332 and 334 (S670).

The controller 450 controls the stirring mechanism 464 to stir the measured water to operate the stirrer 110 (S680). After the operation of the stirrer 110, the controller 450 determines whether a predetermined time elapses for the complete stirring of the measured water (S690). If it is determined in step S690 that the predetermined time has elapsed, the controller 450 controls the stirring mechanism 464 to stop the operation of the stirrer 110 (S700).

After the operation of the stirrer 110 is stopped, the controller 450 detects ions of the measured water through the ion detector 423 (S710). In operation S720, it is determined whether the ion is detected through the output of the ion detecting unit 423.

If it is determined in step S720 that ions are detected, the controller 450 determines whether the detected value is greater than or equal to a preset value (S730). If it is determined in step S730 that the detected value is greater than or equal to the set value, the controller 450 controls the alarm unit 491 to alarm through the lamp 492 and the speaker 493, and the antenna 472 and the wireless communication unit. The alarm message is transmitted to the central control unit B through 471 (S740). Accordingly, the central control unit (B) transmits an alarm message to the management system (C). In addition, the central control unit (B) transmits the alarm message and the unique number of the administrator to the communication server 20 through the Internet 11 or a dedicated line 12 so as to send an alarm message to the administrator. Accordingly, the communication server 20 transmits an alarm message, that is, a text message, to the administrator's mobile phone 40 or PDA 50 having the unique number through the base station 30. The alarm message allows the administrator to recognize the alarm occurrence in the water quality measurement device even at a remote location.

After the alarm, the control unit 450 performs a sample storage step (S750) to store a sample of the measured water. The sample storage step (S750) is the same as the sample storage process shown in FIG.

After storing the sample in step S750, the control unit 450 stores the detection data of the measured number in the storage unit 440, and transmits the data to the central control unit B through the antenna 472 and the wireless communication unit 471. (S760). At this time, the state data of the measured number may be transmitted to the mobile phone 40 or the PDA 50 of the manager in the same manner as the alarm operation described above.

And the drainage process (S770) for draining the water remaining in the measuring vessel 100 is carried out. At this time, the drainage process (S770) is the same as the drainage process shown in FIG.

On the other hand, if it is determined in step S720 that no ions are detected, the controller 450 sets a setting for administering the ISA solution stored in the seventh storage container 270 to the measurement container 100 to increase the ion concentration in the measurement water. (S780). According to the setting, the control unit 450 controls the opening and closing of each valve by controlling the first and second valve driving units 461 and 462 (S790).

The ISA solution is administered to the measured water only in an amount determined to increase the ion concentration of the measured water. Accordingly, in order to supply the ISA solution quantitatively, the controller 450 controls the second valve driver 462 to switch the three-way valves 273 and 272 so that the ISA solution circulates through the circulation pipe 275. The control unit 450 controls the pump driving unit 463 to operate the circulation pump 271 (S800). Accordingly, the ISA solution stored in the seventh storage container 270 circulates through the circulation tube 275.

The controller 450 controls the second valve driver 462 to close the three-way valves 272 and 2733, and controls the pump driver 463 to stop the operation of the circulation pump 271 (S820). The control unit 450 controls the second valve driving unit 462 to convert the three-way valve 273 to the measuring container 100 side, and the three-way valve 272 to the pump 274 side (S830).

The controller 450 controls the pump driving unit 463 to operate the pump 274 (S840). Accordingly, air is introduced into the measuring solution 100 through the inlet pipe 276, the ISA solution of the quantity between the three-way valve 272 and the three-way valve 273. The controller 450 determines whether a predetermined time has elapsed (S850). If it is determined in step S850 that the predetermined time has elapsed, the control unit 450 executes step S680.

According to the water quality measurement system according to the present invention, the water quality can be automatically measured by a water quality measuring device installed at a remote location, and can not only automatically collect a sample of the measuring water having a problem, but also measure the water quality. Several sensors are calibrated automatically to ensure accurate calibration. Accordingly, the reliability of each sensor can be improved to improve the accuracy of water quality measurement. By transmitting water quality measurement information and contamination status information to the manager's portable communication device, the remote manager can easily recognize the information of the vertical measurement system. It has an effect.

Claims (18)

In water quality measurement system, A measuring vessel equipped with a sensor for measuring water quality, a measuring water supply pipe connected to supply the measuring water to the measuring vessel, and a circulation connected at both ends to the inlet and the outlet of the measuring vessel to form a flow path through which the measuring vessel is circulated One or more beams connected to the circulation pipe between the circulation pump outlet and the measurement vessel inlet so that a correction pump for correction of the water quality sensor and a circulation pump installed in the middle of the circulation pipe and the water quality sensor can be supplied to the measurement vessel. A semen supply means, a drain pipe connected to the outlet side of the measuring container for draining the measuring container, and a plurality of valves for opening and closing each flow path, And a controller for controlling the operation of the correction liquid supply means, the circulation pump, and the valve. The method of claim 1, The correction liquid supply means includes a correction liquid container filled with a correction liquid, a correction liquid supply pipe connected between the correction liquid container and the circulation pipe, and a correction liquid supply valve installed in the correction liquid supply pipe. Measuring system. The method of claim 2, Control the flow direction of the correction liquid so that the correction liquid is supplied to the measurement container or the upstream side of the circulation pipe starting from the correction liquid supply pipe so that the correction liquid can be recovered in the measurement container by driving the circulation pump. Water quality measurement system comprising an on and off valve respectively installed on the downstream side. The method of claim 1, And a washing water supply pipe connected to the circulation pipe so as to supply the washing water for washing the measuring container and the circulation pipe. The method of claim 4, wherein The water quality measurement system, characterized in that the wash water supply vessel is provided in the middle of the washing water supply pipe to store a predetermined amount of wash water. The method of claim 1, The water quality measurement system, characterized in that the measurement water supply pump is installed in the middle of the measurement water supply pipe for forced supply of the measurement water. The method of claim 1, The water quality measuring system, characterized in that the water level sensor is installed in the measuring vessel detects the water level and transmits a signal accordingly. The method of claim 1, The measuring vessel is a water quality measurement system, characterized in that the stirrer for stirring the liquid filled therein under the control of the controller. The method of claim 1, One or more storage means having a branch pipe branched from the drain pipe to open and close the branch pipe under the control of the controller, a storage container connected to the branch pipe in the middle of the drain pipe so as to store a predetermined amount of the measured water drained Water quality measurement system, characterized in that provided. The method of claim 1, And a transmission means for transmitting the water quality information detected through the plurality of water quality sensors to an external central controller. The method of claim 10, The controller compares the detected water quality information with preset water quality information to determine whether there is contamination, and transmits an alarm message to the central control unit through the transmission means when a pollution occurs. The water quality measurement system, characterized in that it further comprises an alarm unit that can alert itself to the contamination state when the pollution occurs. The method of claim 11, The control unit is connected to a commercial communication server through the transmission means for transmitting the water quality information and the pollution state information to the portable communication device of the manager, and the unique number and message of the preset portable communication device of the manager to the communication server Water quality measurement system, characterized in that the transmission. The method of claim 11, The central control unit is connected to a commercial communication server through any one of the Internet or a dedicated line so as to transmit the water quality information and pollution state information to the manager's portable communication device, and transmits the unique number and message of the manager's preset portable communication device. Water quality measurement system, characterized in that for transmitting to the communication server. The method of claim 1, The water quality sensor includes a PH detecting unit for detecting the pH of the measured water, an ion detecting unit for detecting the ions of the measuring water, a dissolved oxygen detecting unit for detecting the dissolved oxygen of the measuring water, and a turbidity of the measuring water. Water quality measurement system comprising a turbidity detection unit for detecting the temperature, a temperature detection unit for detecting the temperature of the measurement water, and a conductivity detection unit for detecting the conductivity of the measurement water. The method of claim 1, And a dissolved oxygen solution supply means connected to the circulation pipe upstream of the circulation pump so as to supply the dissolved oxygen solution into the measurement vessel. The method of claim 15, The dissolved oxygen liquid supply means includes a branch pipe branched from the circulation pipe, an open / close valve for opening and closing the branch pipe under control of the controller, a distilled water storage container connected to the branch pipe, and distilled water filled in the distilled water storage container. And a pump for supplying air and driven under the control of the controller. In water quality measurement system, A measuring vessel equipped with a water quality sensor, a measuring water supply pipe connected to supply the measuring water to the measuring vessel, one or more correction liquid quantitative supply means for supplying a quantitative correction liquid into the measuring vessel, and drainage of the measuring vessel Water quality measurement system comprising a drain pipe connected to the outlet of the measuring vessel for. The method of claim 17, The correction liquid quantitative supply means includes a correction liquid container filled with a correction liquid, a correction liquid circulation tube connected at both ends to an inlet and an outlet of the correction liquid container to form a flow path circulating the correction liquid container, and the correction liquid The correction liquid circulation pump installed in the middle of the circulation pipe, the first three-way valve installed in the middle of the correction liquid circulation pipe downstream of the correction liquid circulation pump, and the correction liquid branched from the first three-way valve and connected to the measuring container. An injection pipe and the correction liquid circulating pipe between the first three-way valve and the correction liquid circulating pump, wherein the correction liquid is fixed in the correction liquid circulation tube between the first three-way valve and A second three-way valve spaced apart from the first three-way valve by a predetermined distance, and the second third so as to forcibly inject a correction liquid of a fixed amount filled between the two valves after switching between the two valves toward the measuring container. Water quality measurement system characterized in that it comprises an air injection means, the pump connected to the valve.