KR20160049304A - System for measuring concrete recovery water quality using optics - Google Patents

Abstract

The present invention relates to a system for measuring a concentration of concrete recovery water by using optics. The purpose of the present invention is to measure a quality of sampled water by using optics. To achieve this, the system includes: a controller which displays a measured value; a transmission unit provided with a PCB substrate to transmit an electrical signal to the controller in a wireless scheme; a support unit coupled to the transmission unit; a cell block unit coupled to the support unit; a sensor unit coupled to at least three sensor holes formed on a lower surface of the cell block unit in a straight line to receive light after emitting an infrared ray when sampled water is introduced to flow in to an interior space of the cell block unit so as to measure the turbidity of the sampled water, floating matters, and a high concentration of the sampled water; and a wiper type cleaning unit coupled to the cell block unit to remove foreign substances deposited in the sensor unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a concrete concentration measuring system,

An embodiment of the present invention relates to a concrete collection point concentration measurement system using optical.

As interest in the environment has recently increased and various regulations have been expanded and strengthened due to the change of recognition, efforts to appropriately deal with industrial byproducts have become critical. Therefore, in the ready-mixed concrete industry, which is the main producer of concrete, it is necessary to concentrate on the treatment of industrial by-products generated during the production of concrete.

Until now, there has been very little interest in recovered water in the remicon plant, but it is time to recycle the collected water. By recycling such recovered water, there is a great positive effect such as prevention of environmental pollution and reduction of waste disposal cost. The reasons for this reuse (remicon washing drain) are as follows. First, in the production of ready-mixed concrete, concrete attached to the mixer truck or batcher plant of the concrete mixer can not be decomposed by mixing with water. Therefore, once the production and transportation of the concrete is finished, Concrete must be cleaned. Since the washing water discharged at this time is a strong alkaline environmental pollutant, it may cause water quality and soil pollution when it is discharged into a natural state or when it is discarded. Therefore, in recent years, neutralization treatment or recovery water recycling facilities have been provided and reused. In addition, in order to reuse the recovered water, in addition to the prevention of environmental pollution, there is a background to solve problems such as the lack of water of Remicon, the burden on the waste disposal cost, and the shortage of paper in the waste repository.

In other words, the recovered water has a direct influence on the quality of the remicon, and since there is not yet a reliable recycling number measuring device, a complete reuse method can not be found. Therefore, it is urgent to plan a method to reduce the production cost of the remicon and to save the environment.

Therefore, there is a need to hasten the development of recovered water recycling technology and related measuring equipment, which does not affect the quality of the ready-mixed concrete, so that the recovered water can be used for high-strength concrete.

More specifically, in order to recycle the recovered water, it is necessary to use real-time and quantitative measurement techniques for the concentration of remicon wastewater, techniques for managing the quality of the remicon using an effective recovery water concentration measurement system, There is a growing need to develop technologies that minimize productivity, improve productivity through the use of rational and efficient water (tap water) usage controls. In addition, through the development of measurement equipment related to reclaimed water recycling, the market for automated system of quality management of remicon wastewater, the reduction of environmental load through the use of all remicon wastewater classified as wastewater, It is necessary to reduce the cost of dismantling by preventing poor construction due to early quality of remicon, and to improve the external credibility among suppliers, installers and managers.

Through the development of this technology, it is becoming necessary to measure the solid content of the remicon wastewater in real time and quantitatively to expand it to the secondary products (ie, the hume pipe, pile, concrete product production site) or each construction site plant.

Registered Patent No. 10-1307298 entitled " Concrete recovery water concentration meter using induction inductance and method for measuring concentration thereof " Registered Patent Publication No. 10-0899418 entitled "

One embodiment of the present invention provides a system for measuring the concentration of concrete recovered water using an optical system capable of measuring the concentration of concrete recovered water using optical.

According to an embodiment of the present invention, there is provided a system for measuring concentration of concrete using water, comprising: a controller for displaying measured values; A transmitter having a PCB substrate to transmit an electrical signal in a wireless manner to the controller; A support portion coupled to the transmitter, a cell block coupled to the support, Wherein at least three sensor holes are formed in a straight line on the lower surface of the cell block to measure the turbidity, suspended matter and high concentration of the sample water after receiving the infrared rays when the sample water flows into and flows into the inner space of the cell block portion A sensor unit coupled to the sensor unit; And a wiper-type cleaning unit coupled to the cell block unit to remove foreign substances deposited on the sensor unit.

The sensor unit may include a light emitting sensor, a first light receiving sensor, and a second light receiving sensor sequentially coupled to at least three sensor holes sequentially formed on a lower surface of the cell block.

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.

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.

The system for measuring the concentration of concrete using the optical fiber according to an embodiment of the present invention is characterized in that a light receiving sensor and two light receiving sensors are sequentially arranged with respect to a light emitting sensor, It is possible to measure the concentration of the concrete recovered water by measuring 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 step electromotive force value.

FIG. 1 is a perspective view showing a system for measuring the concentration of concrete collected by using an optical fiber 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.
FIG. 4 is a view schematically showing a concrete recovery water scrubber that can be applied to an optical-based concrete recovery water concentration measurement system 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 concrete collected water concentration measuring system using optical according to an embodiment of the present invention, FIG. 2 (a) is a front view showing a cell block of FIG. 1, And FIG. 3 is a block diagram schematically showing a PCB board installed in the transmitter of FIG. 1, and FIG. 4 is a schematic view of a concrete collector water cleaner applicable to an optical-based concrete recovery water concentration measuring system according to an embodiment of the present invention. Fig.

1 to 2B, a system for measuring the concentration of concrete using water according to an exemplary embodiment of the present invention includes a controller 10 for receiving a wireless signal and controlling a measured value and a function, a controller 10, (Not shown) connected to the transmitter 20 and fastened to the stationary plate 1. The transmitter 20 is connected to a PCB 22 (Fig. 3) A support block 30 formed of a support pipe 32 connected to a lower portion of the cell block portion 40 and a cell block portion 40 fastened to the support portion 30; A sensor unit 430 for measuring the turbidity, suspended matters and high concentration of the sample water by emitting infrared rays when the infrared ray is received and flowed in the sensor unit 430, and a wiper 430 for removing foreign substances deposited on the sensor unit 430 (440).

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 4310 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. and d2 are 0.5 mm or less, there is a difficulty in the process of forming the sensor holes 431a, 432a, and 433a, and the spacing becomes too dense, so that light not scattered with respect to the sample water passes through the first and second There is a problem that the measurement limits of the first and second light receiving sensors 432 and 433 can be changed by entering the light receiving sensors 432 and 433. 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, and it becomes difficult to measure the high concentration value 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, the PCB substrate 21 installed in the transmitter 20 of the concrete-collected water concentration measuring system using the optical system according to the embodiment of the present invention can measure the electromotive force values measured from the first light receiving sensor 432 A first to a third amplifying unit 211 (211a, 211b, and 211c) for amplifying signals in a plurality of stages having different amplification ratios, a first to a third amplifying units 211a to 211c for filtering respective signals for the electromotive force values amplified from the first to third amplifying units 211 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 having different amplification ratios, A second filter 214 for filtering each signal of the electromotive force value amplified from the sixth amplifying unit 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 the electromotive force values filtered from the first and second filter sections 213 and 214 By calculation based on a value and a pixel value calculation unit 217 that measures the density value of the sample number.

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 include circuits including a band-pass filter (not shown) and a frequency filter (not shown) And converts the amplified wave forming signal from the fourth to sixth amplifying units 212 into 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.

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.

On the other hand, a biaxially stretched film is formed on the surface of the case 22 to protect the surface of the case 22 against the external environment. At this time, the biaxially stretched film formed may be formed of a polypropylene resin for a transparent biaxially stretched film. The polypropylene resin for a biaxially stretched film contains an ethylene-propylene block copolymer obtained by stepwise polymerizing a propylene homopolymer or an ethylene-propylene random copolymer in an amount of 80 to 95% by weight and an ethylene-propylene rubber in an amount of 5 to 20% , The ethylene content of the ethylene-propylene random copolymer is 2 wt% or less, the ethylene content of the ethylene-propylene rubber is 30 to 65 wt%, and the intrinsic viscosity of the solvent extract is 1 to 4 dl / g.

The ethylene-propylene block copolymer may be prepared by polymerizing propylene homopolymer or ethylene-propylene random copolymer and ethylene-propylene rubber stepwise in a series of reactors and kneading.

The propylene homopolymer is produced by polymerization in which propylene is injected singly in a polymerization reactor.

The ethylene-propylene random copolymer comprises 80 to 95% by weight based on the ethylene-propylene block copolymer. At this time, the content of the ethylene-propylene random copolymer is less than 80% by weight, the crystallinity is lowered, the heat resistance is lowered, and the transparency is lowered due to the increase of the rubber phase. When the content exceeds 95% by weight, .

The content of ethylene in the ethylene-propylene random copolymer is preferably 2% by weight or less. If it exceeds 2% by weight, the frequency of ethylene defects increases in the continuous propylene chain participating in crystallization, And the heat resistance is low.

The ethylene-propylene rubber is polymerized in the presence of a propylene homopolymer or an ethylene-propylene random copolymer in a subsequent polymerization reactor after the propylene homopolymer or the ethylene-propylene random copolymer is polymerized.

The ethylene-propylene rubber comprises 5 to 20% by weight based on the ethylene-propylene block copolymer. When the content of the ethylene-propylene block copolymer is less than 5% by weight, the impact strength can not be exhibited. When the content of the ethylene-propylene block copolymer is more than 20% by weight, the rigidity and heat resistance are drastically decreased and transparency is decreased.

The intrinsic viscosity of the solvent extract in the ethylene-propylene rubber is 1 to 4 dl / g. If the intrinsic viscosity is less than 1 dl / g, an increase in impact strength can not be expected. If the intrinsic viscosity exceeds 4 dl / g, rupture of the rubber component tends to occur during biaxial stretching, And the transparency decreases as the size of the dispersed rubber phase increases.

The ethylene content of the ethylene-propylene rubber may be 30 to 65% by weight. If the content of ethylene is less than 30% by weight, the elasticity of the rubber decreases and the impact resistance lowers. When the content of ethylene exceeds 65% by weight, the compatibility of the rubber component with the propylene homopolymer or ethylene-propylene random copolymer decreases, The transparency is lowered and the workability and the impact strength are lowered.

Referring to FIG. 4, a concrete recoverable water scrubber, which can be applied to the optical concrete-collected water concentration measuring system according to an embodiment of the present invention, is connected to an inlet pipe 510 To the high pressure scrubber 530 through the scrubbing inlet pipe 520 and the recovered scrubbed water in the high pressure scrubber 530 is supplied to the high pressure scrubber 530 by the operation of the second manual butler 511 And is discharged again through the cleaning discharge pipe 540.

On the upper side of the high-pressure washer 530 is provided a cleaning means 532 for cleaning the concrete recovered water inside and a sensor portion 531 for measuring the concentration of the recovered water is diagonally inserted into the side portion.

At this time, when the concentration of the recovered water is measured in the high-pressure scrubber 530, the third manual butterfly 521 and the fourth manual butterfly 533 are in a locked state.

It is to be understood that the present invention is not limited to the above-described embodiment, but may be practiced in various other forms, such as those described in the following claims 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 (4)

A controller (10) for displaying a measured value;
A transmitter 20 having a PCB substrate 21 for transmitting electrical signals to the controller 10 in a wireless manner;
A support 30 coupled to the transmitter 20, a cell block 40 fastened to the support 30,
When the sample water flows into and flows into the inner space of the cell block unit 40, infrared rays are emitted and then received to measure the turbidity, suspended matter and high concentration of the sample water. A sensor unit 430 coupled to at least three sensor holes formed respectively; And
And a wiper-type cleaner (440) coupled to the cell block (40) to remove foreign matter deposited on the sensor unit (430).
The method according to claim 1,
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 on the lower surface of the cell block unit 40, And a second light receiving sensor (433).
The method according to claim 1,
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 Concrete recovery water concentration measurement system using optics.
The method of claim 3,
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 calculating unit (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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