KR101445533B1 - System for measuring suspended solids using multi-sensors - Google Patents

Abstract

An embodiment of the present invention relates to a system for measuring suspended solids using multi-sensors. The purpose of the present invention is to simultaneously measure the turbidity of sample water, suspended solids, and high concentration by using multi-sensors. To this end, the system according to an embodiment of the present invention comprises: a controller which displays measured values; a transmitting unit which is equipped with a PCB substrate in order to wirelessly transmit electric signals to the controller; a support unit which is coupled with the transmitting unit; a cell block unit which is coupled with the support unit; a sensor unit which is coupled respectively with at least three sensor holes linearly formed on the bottom surface of the cell block unit so as to irradiate infrared rays and receive light when sample water is fed and flowed into the internal space of the cell block unit so that the turbidity of the sample water, suspended solids, and high concentration can be measured; and a wiper-shaped washing unit which is coupled with the cell block unit so as to remove foreign material sticking on the sensor unit. The sensor unit comprises: a light-emitting sensor which is coupled sequentially with the three sensor holes linearly formed on the bottom surface of the cell block unit; a first light receiving sensor; and a second light receiving sensor. The first light receiving sensor and second light receiving sensor are disposed so that the central axes thereof are respectively 45 degrees and 90 degrees.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system for measuring suspended solids,

An embodiment of the present invention relates to a suspended solids measurement system using a multi-sensor.

Suspended solids (suspended solids) are indicators of water quality of water contaminated with substances that are 2mm or less in particle diameter and are not soluble in water. They are also commonly referred to as suspended solids.

In addition, wastewater from municipal wastewater plants is suspended in a suspended state containing solids of organic matter and inorganic matters and is discharged into natural waters such as rivers, lakes, and waters, thereby raising the turbidity of water, defiling the appearance, Contaminating natural water quality such as reducing dissolved oxygen.

Firstly, MLSS (Mixed Liquid Supended Solids) refers to microorganisms in an aeration tank, which is abbreviated as suspended solids of activated sludge suspended solids or aeration tank mixed solution, and is used as an indicator of the amount of activated sludge It is an important factor of the treatment facility.

In addition, MLSS is an indicator for indicating the amount of microorganisms or the amount of sludge having biological activity in the aeration tank of the activated sludge process. The unit is expressed in ppm or mg / l. The MLSS, in which the suspended solids of the mixed liquor, or the organic suspended solids without biological activity, are metered, does not strictly indicate the amount of living organisms in the aeration tank. However, it is easy to measure, and it is necessary to know the approximate value of the amount of living organisms and is an index necessary for the sludge management of the activated sludge process. Furthermore, there are cases where MLVSS (Miguor Volatile Suspended Solids) is used as an index accurately indicating the abundance of living things in the aeration tank.

The MLSS is an activated sludge (mixed sludge of activated sludge generated from aeration tank and return sludge from a settling tank) as the concentration of suspended solids in the aeration tank in the activated sludge treatment process. In the case of the standard activated sludge method, MLSS is operated at 1,400 to 2,000 ppm .

Second, SS (Suspended Solids) refers to a solid material containing particles of organic matter and organic matter suspended in water without a particle size of less than 2 mm. When the sample is filtered using 0.1% pore filter paper, Which is a non-volatile substance. It is called Suspended Solids or Suspended Solids and is indicated as mg / l as an indicator.

The difference between MLSS and SS is briefly mentioned, and MLSS is used as an indicator for the amount of sludge having microorganism amount or biological activity in the aeration tank and is an index necessary for sludge management, whereas SS is used as an indicator of suspended matter.

In the conventional suspended solids measurement method, the sample is filtered by a method of on-line on-line type, and the solids are collected and dried, and the concentration of the solids is determined by the difference in weight between before and after the measurement. .

In order to measure the MLSS and the SS separately, there is a cumbersome problem of replacing the measuring instrument, which requires the use of a measuring instrument having a different function. In order to measure the measurement, a combination of a light emitting sensor and a light receiving sensor It is difficult to replace or repair the cell block due to failure or breakage, and the replacement cost increases accordingly.

In addition, other methods for measuring suspended solids are portable, probe-based, and have a problem in that they can not be repaired due to malfunctions because they are composed of a single component. Although it is convenient to measure MLSS and SS at the same time, There is a problem that it is necessary to use a separate mechanism for the measurement.

Registered Patent Publication No. 10-0643175 'On-line suspended matter substance concentration sensor device' Registered Patent Publication No. 10-0899418 'On-line suspended solids measuring device'

An object of the present invention is to provide a suspended solids measurement system using a multi-sensor capable of simultaneously measuring turbidity, suspended matter and high concentration of a sample water using a multi-sensor including at least three sensors.

Another object of the present invention is to measure the concentration value of the sample water using the electromotive force value corresponding to the concentration value of the sample water measured from the light receiving sensor based on the pre-set stepped electromotive force value corresponding to the concentration value of the sample water The present invention relates to a system for measuring suspended solids using a multi-sensor.

It is still another object of the present invention to provide a method and an apparatus for measuring the amount of scattered light, which comprises a first light receiving sensor that receives infrared rays scattered by the sample water from a light emitting sensor, generates signals corresponding to measured values of turbidity, SS (suspended matter) The present invention provides a floating matter measurement system using a multi-sensor that receives infrared rays scattered in a sample water from a light emission sensor to generate a signal corresponding to a measured value of turbidity.

It is still another object of the present invention to provide a method and apparatus for reading three channels of a first to a third amplifying unit sequentially based on a reference concentration value stored in a reference concentration value setting unit, The input port is changed to the next channel having a low amplification ratio.

It is still another object of the present invention to provide a multi-sensor which can automatically input the light that is scattered and input according to the concentration of the sample water into each of the channels (i.e., the first to third amplifying units) And the like.

A suspended solids measurement system using a multi-sensor according to an embodiment of the present invention includes a controller for displaying a measured value, a transmitter having a PCB substrate for transmitting an electric signal wirelessly to the controller, And a control unit for controlling the operation of the cell block unit so as to measure the turbidity, suspended matter, and high concentration of the sample water by receiving infrared rays after receiving the infrared rays when the sample water flows into and flows into the inner space of the cell block unit, A sensor unit coupled to at least three sensor holes formed in a straight line on the sensor unit, and a wiper-type cleaner coupled to the cell block unit to remove foreign substances deposited on the sensor unit, The sensor unit may include at least three sensor holes formed in a straight line on the lower surface of the cell block unit, The first light receiving sensor and the second light receiving sensor with respect to the light emitting sensor may be arranged so that the respective central axes thereof form 45 degrees and 90 degrees with respect to the light emitting sensor .

Wherein the PCB substrate is set to have different amplification ratios of the electromotive force values corresponding to the concentration values of the sample water and the electromotive force values corresponding to the concentration values of the sample water measured from the first light receiving sensor and the second light receiving sensor Can be read based on the stepwise electromotive force value and the concentration value of the sample water can be measured.

The light-emitting sensor, the first light-receiving sensor, and the second light-receiving sensor may be disposed at equal intervals of any one of 0.5 mm to 3.0 mm.

Wherein the PCB substrate includes first to third amplifiers for amplifying the electromotive force values measured by the first light receiving sensor in a plurality of stages in which amplification ratios are different from each other; A first filter unit for filtering each signal of the electromotive force value amplified by the first to third amplifying units; Fourth to sixth amplifiers for amplifying the electromotive force values measured by the second light receiving sensor by a plurality of steps, each of which has an amplification ratio different from that of the first amplification ratio; A second filter unit for filtering each signal of the electromotive force value amplified by the fourth to sixth amplification units; A reference concentration value setting unit for setting a stepwise electromotive force value corresponding to a concentration value of the sample water; And a concentration value calculator for calculating a concentration value of the sample water by calculating an electromotive force value filtered from the first and second filter units based on the stepwise electromotive force value.

The concentration value calculation unit sequentially reads the signals passing through the channels of the first to third amplification units or the fourth to sixth amplification units so that the value of the electromotive force of the number of samples to be read in a channel having a high amplification ratio rises, , It is possible to read and change to the next channel having a relatively low amplification ratio.

Wherein the sensor unit further comprises a temperature sensor coupled to the cell block unit and measuring a temperature of the sample water, wherein the concentration value calculator calculates a concentration value of the sample and a temperature value of the sample measured from the temperature sensor, Can be transmitted to the controller.

In the floating material measurement system using the multi-sensor according to an embodiment of the present invention, one light-emitting sensor and two light-receiving sensors are arranged in a line so that the light-receiving sensors are arranged at 45 degrees and 90 degrees, The concentration of the sample water is measured by using the electromotive force value corresponding to the concentration value of the sample water measured from the light receiving sensor based on the preset stepped electromotive force value corresponding to the value, Measurement can be made possible.

Further, the present invention is characterized in that the first light receiving sensor receives infrared rays scattered by the sample water from the light emitting sensor to generate a signal corresponding to the measured values of turbidity, SS (floating substance) and MLSS, and the second light receiving sensor The first and second light receiving sensors are arranged at mutually different angles with respect to the light emitting sensor so that a signal corresponding to the measured value of turbidity is received by receiving the infrared rays scattered in the sample water and the turbidity and the SS Concentration) and high densitometer values can be measured simultaneously or selectively.

In the present invention, the concentration value calculation unit sequentially reads the three channels of the first to third amplification units on the basis of the reference concentration value stored in the reference concentration value setting unit, When the limit is exceeded, the low and high concentrations can be automatically read and measured using the method of changing the channel input port with the lower amplification ratio.

In addition, the present invention is characterized in that light that is scattered and input according to the concentration of the sample water is automatically input to each of the channels (i.e., the first to third amplification units) in three amplification ratios, Measurement can be made and specifications of the predetermined sensor can be automatically changed according to the user's intention, the maximum measurement limit value, the accuracy, and the maximum range specification.

1 is a perspective view illustrating a suspended solids measurement system using a multi-sensor according to an embodiment of the present invention.
FIG. 2A is a front view showing the cell block of FIG. 1. FIG.
2B is an enlarged front view showing the sensor unit of FIG. 2A.
3 is a block diagram schematically showing a PCB substrate installed in the transmitter of FIG.
4A and 4B are views schematically showing the operation of a floating material measurement system using a multi-sensor according to an embodiment of the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which those skilled in the art can readily implement the present invention.

FIG. 1 is a perspective view showing a floating material measuring system using a multi-sensor according to an embodiment of the present invention, FIG. 2 (a) is a front view showing a cell block unit of FIG. 1, FIG. 3 is a block diagram schematically showing a PCB board installed in the transmitter of FIG. 1, and FIGS. 4a and 4b are views schematically showing operations of a floating material measurement system using a multi-sensor according to an embodiment of the present invention.

Referring to FIGS. 1 and 2B, a floating substance measurement system using a multi-sensor according to an embodiment of the present invention includes a controller 10 for receiving a wireless signal and controlling a measurement value and a function, A transmitter 20 connected to the PCB 22 so as to transmit an electrical signal in a wireless manner and a support holder 31 coupled to the transmitter 20 and fastened to the fixing plate 1 A support block 30 connected to the lower portion of the support block 30 and a support block 30 connected to the support block 30 and a cell block 40 connected to the support block 30, And a wiper-type cleaning unit 440 for removing foreign matters deposited on the sensor unit 430. The sensor unit 430 includes a sensor unit 430 for measuring the turbidity, suspended matter, and high concentration of the sample water.

The controller 10 is configured to receive an electrical signal of turbidity of a sample water, a suspended substance, and a high concentration in a wireless manner, display values for measurement data, and control various functions. In addition, the controller 10 is configured to graphically display the measured values of the temperature, the measured value, and the time of the sample water. In addition, the controller 10 includes a display unit having a substantially rectangular shape as a whole and a display unit for displaying a screen electronically on a front surface thereof. The display unit is provided with a display unit for displaying various settings and calibrations, A power button for turning the power on and off, a button for calibrating the lens of the sensor unit 430, a parameter button for setting the temperature and the concentration value, a trend button for displaying the measured value in a graph, (Not shown) capable of displaying measurement items such as hydrogen ion concentration, dissolved oxygen amount, activated sludge (MLSS), suspended solids (SS), electric conductivity, residual chlorine amount and high concentration.

The controller 10 has a hole (not shown) in which a cable for use in a wire method is inserted, and a separate PCB substrate 21 having a receiving function is used to use the wireless system. And a receiving antenna for receiving a frequency.

The transmitter 20 transmits an electrical signal to the controller 10 in a wireless manner. A PCB substrate 21 having a transmitting function is inserted and fixed in a rectangular case 22, and a PCB substrate 21 The antenna 24 is formed. In addition to the communication unit 218 that performs the transmission function, the PCB substrate 21 has different amplification ratios for the stepwise electromotive force values corresponding to the concentration values of the sample water, and the first and second light receiving sensors 432 and 433 ) Is measured based on the value of the electromotive force in each step, and the concentration value of the sample water is measured. The structure of the PCB substrate 21 will be described in detail with reference to FIG.

The supporting part 30 is inserted into the cylindrical holder 23 of the transmitting part 20 so as to be coupled to the fixing plate 1 for fixing and the upper part is formed with a spiral on the inner and outer peripheral surfaces, A support holder 31 having a cylindrical structure with a spiral on the inner circumferential surface and a large diameter cylinder at its center is formed and inserted into the lower portion of the support holder 31 to form a spiral. And a support pipe 32 which can be made of a strong plastic material.

The cell block portion 40 includes a cylindrical receptacle 42 which is positioned at the lower portion of the sealing lid 41 to be fastened to the supporting portion 30 and a cylindrical receptacle 42 which is fixed to the lower portion of the cylindrical receptacle 42, And includes a cell block body 43 formed with at least three sensor holes 431a, 432a, and 433a. The first and third sensor holes 431a and 433a of the three sensor holes 431a and 433a are inclined to be symmetrical with respect to each other and the first and third sensor holes 431a and 433a A second sensor hole 432a in the vertical direction is formed. Here, the first sensor hole 431a and the second sensor hole 432a form an angle of 45 degrees, respectively, and the first sensor hole 431a and the third sensor hole 433a extend respectively The center line forms an angle of 90 degrees. The first, second, and third sensor holes 431a, 432a, and 433a may include a light emitting sensor 431 inserted into the first, second, and third sensor holes 431a, 432a, and 433a, And the second light receiving sensors 432 and 433 are spaced apart from each other by a predetermined distance so as to be 0.5 mm to 3.0 mm.

The sensor unit 430 includes a light emitting sensor 431 coupled to at least three sensor holes 431a, 432a, and 433a formed in a straight line on the lower surface of the cell block body 43 by rubbers 451 and 452, And includes two light receiving sensors 432 and 433. That is, the sensor unit 430 is inserted into the first sensor hole 431a and inserted into the second and third sensor holes 432a and 433a, respectively, and a light emission sensor 431 that emits infrared rays in the sample water direction And first and second light receiving sensors 432 and 433 for receiving the emitted infrared rays at different angles. That is, the first and second light receiving sensors 432 and 433 are arranged so that the center axes of the light receiving sensors 431 and 433 form 45 degrees and 90 degrees, respectively. The first light receiving sensor 432 receives infrared rays that are emitted from the light emitting sensor 431 and scattered at an angle of 45 degrees and the second light receiving sensor 433 emits light from the light emitting sensor 431 at 90 degrees Receives infrared rays scattered at an angle.

The first light receiving sensor 432 receives infrared rays scattered in the sample water from the light emitting sensor 431 and generates signals corresponding to measured values of turbidity, SS (suspended matter) and MLSS, The sensor 433 receives infrared rays scattered in the sample water from the light emission sensor and generates a signal corresponding to the measured value of turbidity. Therefore, in the present invention, the first and second light receiving sensors 432 and 433 are arranged at mutually different angles in a straight line with respect to the light emission sensor 431 to measure turbidity, SS (concentration of suspended matter) Can be measured simultaneously or selectively.

The light emitting sensor 431 and the first and second light receiving sensors 432 and 433 are spaced apart from each other by a distance d1 and d2 of 0.5 mm to 3.0 mm. If the distances d1 and d2 between the sensors are 0.5 mm or less, there is a difficulty in the process of forming the sensor holes 431a, 432a, and 433a, and the intervals are too dense, The light enters the first and second light receiving sensors 432 and 433 and the measurement limit values of the first and second light receiving sensors 432 and 433 can be changed. In addition, if the distances d1 and d2 between the sensors are 3 mm or more, the measurement limit values of the first and second light receiving sensors 432 and 433 become small, which makes it difficult to measure the high concentration of the sample water .

Although not shown, the sensor unit 430 may further include a temperature sensor coupled to the cell block unit 40 to measure the temperature of the sample water. The temperature sensor measures the temperature of the sample water and transmits the measurement result to the PCB substrate 21 installed in the transmitter 20.

The cleaner 440 is formed to rotate at the end of a rotary shaft connected to the shaft 421 of the motor 420 inserted into the lower portion of the cylindrical receiver 42. That is, the cleaning part 440 is positioned on the lower surface of the cell block body 43 and rotated at the end of the rotation shaft.

3 to 4B, the PCB substrate 21 installed in the transmitter 20 of the suspended solids measurement system using the multi-sensor according to an embodiment of the present invention may measure the electromotive force value measured from the first light receiving sensor 432 211a, 211b and 211c for amplifying the respective amplitudes of the electromotive force values from the first to third amplification sections 211 by filtering the signals of the first to third amplification sections 211 to 211c, The fourth to sixth amplifying units 212 (212a, 212b, 212c) for amplifying the electromotive force values measured from the first filter unit 213 and the second light receiving sensor 433 by a plurality of steps with different amplification ratios, A second filter unit 214 for filtering each signal of the electromotive force value amplified from the fourth to sixth amplification units 212, a reference concentration value setting unit 214 for setting a stepwise electromotive force value corresponding to the concentration value of the sample water, (216) and the first and second filter sections (213, 214) to the stepwise electromotive force value And a concentration value calculating unit 217 for measuring the concentration value of the sample water by calculating based on the concentration value.

The first to third amplification units 211 and the fourth to sixth amplification units 212 may be analog amplification circuits having different amplification ratios.

The first and second filter units 213 and 214 are composed of circuits including a bandpass filter 213a and a frequency filter 213b and are connected to the first to third amplification units 211 and 214, To the sixth amplifying unit 212 to a voltage value.

An A / D converter (not shown) is connected between the first and second filter units 213 and 214 and the concentration value calculator 217 to convert a signal representing an electromotive force value that has passed through the first and second filter units 213 and 214 215 may be formed.

The reference concentration value setting unit 216 sets and stores a reference concentration value for a different signal for each sample number by dividing the reference sample number by concentration. For example, the sensor is immersed in the 0 mg / L sample and the standard concentration values are separately stored so as to correspond to the three channels of the first to third amplification units. The other 5 mg / L, 10 mg / L and 20 mg / L are also stored.

The concentration value calculation unit 217 sequentially reads the three channels of the first to third amplification units 211 on the basis of the reference concentration value stored in the reference concentration value setting unit 216, Is exceeded and the readable limit is exceeded, the next channel input port having a low amplification ratio is changed. In this way, low and high concentrations can be automatically read.

On the other hand, when the light receiving sensor receives light that is scattered at a specific angle by a light source (that is, infrared light) and reads the light, the magnitude of the received light signal increases as the concentration of the sample water increases. However, if the concentration of the sample water continuously increases, the received signal will return to attenuation from a certain concentration. This is due to the greater blocking effect of light blocking the scattered light intensity. As a result, the maximum measurement range of the light receiving sensor is limited.

A light emitting sensor 431 and first and second light receiving sensors 432 and 433 are provided on at least three sensor holes 431a, 432a and 433a formed in a straight line on the lower surface of the cell block body 43, The first and second light receiving sensors 432 and 433 are arranged at 45 degrees and 90 degrees with respect to the light emission sensor 431 and the values of the electromotive force in the step corresponding to the concentration of the sample water are set on the PCB substrate 21, The amplification ratios are set differently to measure the electromotive force value corresponding to the concentration of the sample water measured from the first and second light receiving sensors 432 and 433 based on the step electromotive force value to measure the concentration value of the sample water , So that the high concentration value of the sample water can be measured.

That is, as shown in FIG. 4A, according to the present invention, the light that is scattered and input according to the concentration of the sample water is automatically input to each of the channels (i.e., the first to third amplification units) , It is possible to measure freely from low concentration to high concentration, and specification contents of the predetermined sensor can be automatically changed according to the user's intention, the maximum measurement limit value, the precision, and the maximum range specification. In FIG. 4A, a1 denotes a signal input of an AC waveform to be sent to the light emitting sensor 431, which is an infrared LED, a2 amplifies a signal of an AC waveform, and a3 denotes a temperature of the sample measured by the temperature sensor ≪ / RTI > In addition, the first to third amplification units 211 in FIG. 4A have different amplification ratios in three stages.

4B, the signal from the second light receiving sensor 433 (that is, a 90-degree signal) is received by the first light receiving sensor 432 while the measured concentration of the sample water rises at the front end of the graph, (That is, a 45-degree signal), and is reversed from point A as the concentration of the sample water gradually increases. At the same time, the value of the signal of the second light receiving sensor 433 is higher than that of the signal of the first light receiving sensor 432, That is, the electromotive force read by the first light receiving sensor 432 becomes larger than the electromotive force read by the second light receiving sensor 433. Although the actual read signal is attenuated from the starting point A, the concentration value calculating unit 217 calculates the electromotive force value measured with respect to the actual number of samples based on the stepwise electromotive force value corresponding to the concentration value of the preset number of samples do.

Accordingly, in the present invention, it is possible to automatically read the low concentration and the high concentration together with the turbidity of the sample water and the suspended substance.

The suspended matter measurement system using the multi-sensor of the present invention has the following advantages.

First, according to the present invention, one light emitting sensor and two light receiving sensors are arranged in a straight line so that the light receiving sensors are arranged at 45 degrees and 90 degrees with respect to the light emitting sensors, and based on predetermined preset stepped electromotive force values corresponding to the concentration values of the sample water The concentration value of the sample water is measured using the electromotive force value corresponding to the concentration value of the sample water measured from the light receiving sensor.

Accordingly, in the present invention, it is possible to simultaneously measure turbidity, suspended matter, and high concentration of the sample water by using a multi-sensor including at least three sensors.

Second, in the present invention, the first light-receiving sensor 432 receives infrared rays scattered in the sample water from the light-emitting sensor 431 to generate a signal corresponding to the measured values of turbidity, SS (suspended matter) and MLSS, The light receiving sensor 433 receives infrared rays scattered by the sample water from the light emitting sensor and generates a signal corresponding to the measured value of turbidity.

Therefore, in the present invention, the first and second light receiving sensors 432 and 433 are arranged at mutually different angles in a straight line with respect to the light emission sensor 431 to measure turbidity, SS (concentration of suspended matter) Can be measured simultaneously or selectively.

Thirdly, according to the present invention, the concentration value calculation unit 217 sequentially reads the three channels of the first to third amplification units 211 based on the reference concentration value stored in the reference concentration value setting unit 216, If the read value is increased and the read limit is exceeded, the next channel input port with the lower amplification ratio is changed.

Accordingly, in the present invention, the low and high concentrations of the sample water can be automatically read in the above-described manner.

Fourthly, the present invention automatically inputs the light that is scattered and inputted according to the concentration of the sample water to each of the channels (i.e., the first to third amplification units) whose amplification ratio is different in three stages.

Therefore, in the present invention, measurement can be performed freely from a low concentration to a high concentration, and specifications of a predetermined sensor can be automatically changed according to the user's intention, such as the maximum measurement limit value, the accuracy, and the maximum range.

As described above, the present invention is not limited to the above-described embodiment, but may be applied to a system for measuring suspended solids using the multi-sensor according to the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

1: Fixing plate 10: Controller
20: Transmitting section 21: PCB substrate
22: Case 23: Cylindrical holder
24: antenna 30:
31: support holder 32: support pipe
40: cell block portion 41: sealing lid
42: cylindrical receiver 43: cell block body
211: first to third amplification units 212: fourth to sixth amplification units
213: first filter unit 214: second filter unit
215: A / D converter 216: Reference concentration value setting unit
217: Concentration value computing unit 218:
430: Sensor part 431: Light emitting sensor
431a: first sensor hole 432: first light receiving sensor
432a: second sensor hole 433: second light receiving sensor
433a: third sensor hole 440:

Claims (6)

A transmitter 20 having a PCB substrate 21 for transmitting an electric signal in a wireless manner to the controller 10 and a support unit 30 coupled to the transmitter 20, And a control unit 40 for controlling the amount of turbidity and floating of the sample water when the sample water flows into and flows into the inner space of the cell block unit 40, A sensor unit 430 coupled to at least three sensor holes formed in a straight line on the lower surface of the cell block unit 40 to measure a substance and a high concentration, And a wiper-type cleaner (440) for removing foreign matters deposited in the floating body (430)
The sensor unit 430 includes a light emitting sensor 431 and a first light receiving sensor 432 that are sequentially coupled to at least three sensor holes 431a, 432a, and 433a formed in a straight line on the lower surface of the cell block unit 40, The first light receiving sensor 432 and the second light receiving sensor 433 form a 45 ° and 90 ° center axes with respect to the light emitting sensor 431, Wherein the first and second sensors are disposed in the first and second directions. The method according to claim 1,
The PCB substrate 21 is set to have different amplification ratios for the values of the electromotive force in each step corresponding to the concentration of the sample water and the sample measured from the first light receiving sensor 432 and the second light receiving sensor 433 And the concentration value of the sample water is measured by reading the electromotive force value corresponding to the water concentration value based on the step electromotive force value. The method according to claim 1,
Wherein the light emission sensor (431), the first light receiving sensor (432), and the second light receiving sensor (433) are disposed at equal intervals of 0.5 mm to 3.0 mm. 3. The method of claim 2,
The PCB substrate (21)
A first to a third amplifying unit 211 for amplifying the electromotive force value measured from the first light receiving sensor 432 by a plurality of steps of different amplification ratios;
A first filter unit 213 for filtering each signal of the electromotive force value amplified by the first to third amplification units 211;
A fourth to a sixth amplifying unit 212 for amplifying the electromotive force value measured by the second light receiving sensor 433 by a plurality of different amplification ratios;
A second filter unit 214 for filtering each signal of the electromotive force value amplified by the fourth to sixth amplification units 212;
A reference concentration value setting unit 216 for setting a stepwise electromotive force value corresponding to the concentration value of the sample water; And
And a concentration value calculating unit (217) for measuring the concentration value of the sample water by calculating an electromotive force value filtered from the first and second filter units (213, 214) based on the stepwise electromotive force value Suspended matter measurement system using multi - sensor. 5. The method of claim 4,
The concentration value calculating unit 217 sequentially reads the signals passing through the channels of the first to third amplifying units 211 or the fourth to sixth amplifying units 212 to sequentially obtain the number of samples Wherein when the value of the electromotive force of the sensor is increased to exceed the reading limit, the sensor can be changed to the next channel having a relatively low amplification ratio and read. 5. The method of claim 4,
The sensor unit 430 further includes a temperature sensor coupled to the cell block unit 40 to measure the temperature of the sample water,
Wherein the concentration value calculator (217) transmits the temperature value of the sample measured from the temperature sensor and the concentration value of the calculated sample to the controller (10).

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