KR101942240B1 - Underwater cctv system for floc observation - Google Patents

Abstract

The present invention relates to an underwater CCTV system for flock observation and, more specifically, to an underwater CCTV system for flock observation, which captures an image of the underwater, determines whether abnormality exists by detecting flock and turbidity based on the captured image of the underwater, outputs a display device or alarm sound in accordance with the determined result, and, consequently, can perform management of water purification facilities in an effective manner. The underwater CCTV system for flock observation comprises: an image capturing device which is installed under the water of a coagulation place and captures an image of the underwater; a control device which receives the image captured by the image capturing device and determines whether abnormality exists by analyzing an amount of the flock and turbidity in the received image; a display device which displays the image captured by the image capturing device in accordance with control of the control device; and an alarm device which outputs alarm sound when an abnormality occurs in accordance with control of the control device. The control device analyzes the received image and determines that an abnormality occurs to the insertion of a coagulant when the amount of generated flock is a set value or less, or the turbidity is a set value or greater. When an abnormality occurs, the control device controls an identifiable popup screen to be displayed on the display device.

Description

{UNDERWATER CCTV SYSTEM FOR FLOC OBSERVATION}

The present invention relates to an underwater CCTV system for flock observation. More particularly, the present invention relates to an underwater CCTV system for flock observation. More particularly, the present invention relates to an underwater CCTV system for flock observation, To an underwater CCTV system for flock observation, which can efficiently manage water purification facilities by outputting a warning sound.

Generally, drinking water is produced by applying a physical / chemical treatment to various kinds of harmful substances such as natural water which is not harmful even if taken for a lifetime, such as ground water and spring water in a cancer-opposing water layer, It can be categorized into drinking water and tap water which is treated with water to drink water for drinking water (water source, dam, valley water, river water, etc.).

Among the above-mentioned classifications, the water treatment plant for producing water resources by drinking water includes a flocculant tank in which flocculants are stored, a flocculant in which raw water is mixed with a flocculant supplied from the flocculant tank, A flocculant in which flocculated flocs are formed, a sedimentation tank in which mixed water containing flocs is introduced from the flocculation floes and flocculated flocs are precipitated, and a filter paper for filtering purified water of the sedimentation tank to produce purified water And is a facility that improves water quality to suit the purpose of use.

Here, the most important factor determining the water purification efficiency of the water treatment plant is the mixing amount of the chemicals to be mixed with the coagulant, and the mixing water mixed with the coagulant is stirred in the coagulant to form flocs. In the case of Alum or PACL, the hydrolysis takes place in less than one second, the adsorption of the coagulant to the particles occurs momentarily, and the amount of the coagulant is small It is very difficult to operate because it has to blend momentarily with the enemy of Yang.

In order to solve the above problems, various techniques for detecting flocs on the aggregated paper have been developed.

As one of the techniques for detecting flocs in cohesive paper, Japanese Patent Application No. 10-0448560 discloses a floc measurement system of cohesive paper.

The technique includes a camera in which a cylindrical photographing tube is installed on a lens so as to photograph a flock of a predetermined depth from a surface of a cohesive paper and a lid is installed to close the front end of the lens and a lamp which is separated from the lens and illuminates to the lens side, And a pump for spraying water to wash the flock of the flock.

However, according to the above technique, since the lens is formed long in water on the water surface and one end is located in the water and a camera is installed on one side, the distance from the camera to the flock which is the subject is considerable and it is difficult to focus, There is a problem in that floc detection is not easy in the image taken by the light source of FIG.

In addition, Japanese Patent Application Laid-Open No. 10-2004-0067702 discloses a method of automatically controlling the amount of coagulant introduced into a water treatment plant by detecting real-time image of flocs.

The above technique controls the amount of the coagulant to be injected and the mixing speed based on the data obtained by real-time image processing of the floc state, and it is a disadvantage that the state of the floc can not be accurately detected because the image of the surface layer of the coagulant is used. .

In addition, JP-A-10-1715613 discloses a flock monitoring apparatus of a water treatment facility. The technique includes a guide rail that moves vertically to a horizontally moving guide rail, a camera is installed on the vertically moving guide rail, a complementary color light is generated in a direction toward the camera to photograph the flock, Since the complementary light is captured by the camera, there is a disadvantage in that the flock state can not be accurately detected.

KR 10-0448560 B1 (September 03, 2004) KR 10-2004-0067702 A (Jul. 30, 2004) KR 10-1715613 B1 (Mar. 07, 2017)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to solve the problem of the prior art by providing a camera in a water treatment facility to display a flock image in real time on a display device, And an object thereof is to provide an underwater CCTV system for flock observation capable of analyzing a flock image and displaying it on an alarm signal and a display device when an abnormality occurs.

According to an aspect of the present invention, there is provided an underwater CCTV system for flock observation, comprising: a photographing device installed in a water of a cohesive paper to photograph an underwater image; A control unit for receiving an image photographed by the photographing apparatus and analyzing the amount and turbidity of the floc in the received image to determine an abnormality; A display device for displaying an image photographed by the photographing device under the control of the control device; And an alarm device for outputting a warning sound when an abnormality occurs according to the control of the control device. The control device analyzes the received image, and if the flock generated by the analysis of the received image is less than the set value or the turbidity is equal to or higher than the set value, And displays a pop-up screen that can be identified by the display device when an error occurs.

Here, the photographing apparatus includes a first vertical tube, one end of which is received in the water of the cohesive paper, and the other end of which is exposed to the upper part of the water surface; And a camera unit installed at the distal end of the first vertical tube for taking underwater images toward the lower side of the aggregated paper.

The camera unit may include a body having an internal space formed therein and having an upper flange and a lower flange; An upper cap coupled with the first vertical tube to communicate with the upper flange of the body; A lower cap coupled to the lower flange of the body, the center of which is provided with a transparent glass; A sealing member installed between the upper flange and the upper cap of the body and between the lower flange and the lower cap to seal the inside of the body; A camera installed inside the body and photographing the water of the cohesive paper through the transparent glass of the lower cap; And a lamp mounted on the body and illuminating a light source in a photographing direction of the camera.

In addition, the lens of the camera is interposed in the transparent glass of the lower cap, and the lamp is installed in the transparent glass of the lower cap, and a plurality of the lamps may be provided around the lens.

In addition, the photographing apparatus may include a second vertical tube installed parallel to the first vertical tube; And a wiper unit installed at the second vertical tube and wiping the outside of the transparent glass of the lower cap according to the rotation operation.

According to the present invention, it is possible to quickly detect whether or not the coagulant is input based on the photographed image, and it is possible to establish a quick response as the visual or auditory output of the abnormality is determined in the determination of the detection result .

In addition, the present invention is advantageous in that it is possible to operate a relatively large-capacity water treatment facility with a small number of personnel because the installation cost is low in the field operation of the water treatment facility and the operation and management by the field operator is easy.

In addition, since water of suitable water quality can be supplied for the purpose of use, reliability of water to be supplied can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a general block diagram of a underwater CCTV system for flock observation in accordance with the present invention; FIG.
2 is a perspective view of a photographing apparatus applied to a underwater CCTV system for flock observation according to the present invention;
3 is an exploded perspective view of a camera unit of a photographing apparatus applied to a underwater CCTV system for flock observation according to the present invention.
4 is a sectional view of the camera unit according to Fig. 3;
5 is a perspective view of a wiper section installed in a second vertical tube in the underwater CCTV system for flocking according to the present invention.
6 is a configuration diagram of a control device applied to a underwater CCTV system for flock observation according to the present invention.
7 is a view showing a screen displayed on a display device applied to a underwater CCTV system for flock observation according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an underwater CCTV system for flock observation. More particularly, the present invention relates to an underwater CCTV system for flock observation. More particularly, the present invention relates to an underwater CCTV system for flock observation, To an underwater CCTV system for flock observation, which can efficiently manage water purification facilities by outputting a warning sound.

1 is a diagram showing the overall configuration of a underwater CCTV system for flock observation according to the present invention.

1, the underwater CCTV system for flocking according to the present invention comprises a photographing apparatus 100, a control apparatus 200, a display apparatus 300, and an alarm apparatus 400. [

The photographing apparatus 100 is installed in the water of the cohesive paper and takes underwater images, and is composed of a device having a waterproof function.

2 is a perspective view of a photographing apparatus applied to a underwater CCTV system for flock observation according to the present invention.

2, the photographing apparatus 100 includes a first vertical tube 110, a second vertical tube 120, a camera unit 130, and a wiper unit 140.

The first vertical pipe 110 is installed such that one end of the first vertical pipe 110 is received in the water of the cohesive paper 1 and the other end of the first vertical pipe 110 is exposed to the upper part of the water surface.

The second vertical tube 120 is installed parallel to the first vertical tube 110, and the second vertical tube is provided with a wiper 140.

At this time, the first vertical pipe 110 and the second vertical pipe 120 may be installed perpendicular to the water surface of the cohesive paper 1, and a separate bracket (not shown) installed on the cohesive paper 1 may be provided. As shown in FIG. A spacer 150 is provided between the first vertical tube 110 and the second vertical tube 120 to maintain parallel spacing therebetween.

The camera unit 130 is installed at the tip of the water in the first vertical tube 110 and is installed to take an underwater image toward the lower side of the aggregation paper 1 and shoots an underwater image of the aggregation paper 1 .

FIG. 3 is an exploded perspective view of a camera unit of a photographing apparatus applied to a underwater CCTV system for flocking according to the present invention, and FIG. 4 is a sectional view of the camera unit according to FIG.

3 and 4, the camera unit 130 of the photographing apparatus 100 includes a body 131, an upper cap 132, a lower cap 133, a sealant 134, a camera 135, And a lamp (136).

The body 131 has an inner space and is provided with an upper flange 131A and a lower flange 131B on the upper and lower sides, respectively, and is shown as a cylindrical shape in the accompanying drawings, but may have various shapes according to design conditions.

The upper cap 132 is coupled to the first vertical pipe 110 to communicate with the upper flange 131A of the body 131 and seals the upper portion of the body 131.

The lower cap 133 is engaged with the lower flange 131B of the body 131 and a transparent glass 133A is provided at the center to seal the lower portion of the body 131. [

The sealing member 134 is installed between the upper flange 131A and the upper cap 132 of the body 131 and between the lower flange 131B and the lower cap 133 to seal the inside of the body 131 Function. The sealing material 134 may be made of a synthetic resin, a synthetic rubber, or the like, as long as it is a material capable of maintaining watertightness or airtightness.

The camera 135 is installed inside the body and has a function of photographing underwater of the cohesive paper 1 through the transparent glass 133A of the lower cap 133 and transmitting the photographed image to the control device 200 .

According to the design conditions, the camera 135 may be a camera having a waterproof function in case the watertight state of the body 131 can not be maintained.

The lamp 136 is installed on the body 131 and illuminates the light source in the photographing direction of the camera 135.

At this time, the lamp 136 is installed so as to be located on the same line as the tip of the lens 135A of the camera 135, so that the light source illuminated by the lamp 136 is not directly incident on the lens module of the camera 135 do.

That is, the lens 135A of the camera 135 is installed in the inside of the transparent glass 133A, and the lamp 136 is installed inside the transparent glass 133A.

According to such a configuration, since the lighting direction of the lamp 136 maintains the normal lighting with respect to the photographing direction of the camera 135, the flock of the cohesive paper can be accurately photographed. That is, the natural light has the advantage of accurately capturing the shape and color of the subject flock.

Here, the lamp 136 may be configured to have a waterproof function in case the watertight state of the body 131 can not be maintained. 4, the lamp 136 includes a lamp module 136A that irradiates a light source according to application of a power source, and a transparent or heat- And a water-retaining member 136B made of a translucent material.

Accordingly, even if the water in the cohesive paper flows into the body 131 because the watertight state of the body 131 is not maintained, the camera 135 and the lamp 136 are maintained in a waterproof state, And there is an advantage that the function of shooting and lighting can be continuously carried out.

The wiper 140 is installed on the second vertical tube 120 and performs a function of cleaning the outer side of the transparent glass 133A of the lower cap 133 according to the rotation operation.

5 is a perspective view illustrating a wiper unit installed in a second vertical tube in the underwater CCTV system according to the present invention.

2, the wiper 140 includes a rotation shaft 141 rotatably installed in the second vertical tube 120, a handle 142 installed at the top of the rotation shaft 141, A rotating body 143 provided at the lower end of the rotating shaft 141 and rotated by the rotation of the handle 141, a wiper arm 144 coupled to the rotating body 143, And a blade 145 which is coupled to the outside of the transparent glass 133A and is in contact with the outside of the transparent glass 133A.

Accordingly, when the user rotates the handle 142, the blade 145 is slid while being in contact with the outside of the transparent glass 133A, thereby wiping the transparent glass 133A.

In the present invention, since the photographing direction of the camera unit 130 is directed toward the lower side of the cohesive paper 1, the flocs to be generated by the coagulant do not interfere with the photographing by being deposited on the camera unit 130. However, since the camera unit 130 is located in the water of the cohesive paper 1, foreign substances contained in the water can be adhered to the outside of the transparent glass 133A.

At this time, the blades 145 positioned in the water and contacting the outside of the transparent glass 133A may not be easy to be visually observed depending on the turbidity of the aggregated paper 1. Therefore, the direction of the handle 142 and the direction of the wiper arm 144 on which the blade 145 is installed may be located on the same line about the rotation axis 141.

Next, the control device 200 (see Fig. 1) will be described.

The controller 200 receives the image captured by the photographing apparatus 100 and analyzes the amount and turbidity of the flock in the received image to determine whether the abnormality is abnormal. , A personal terminal, a server, or the like.

The controller 200 receives the image transmitted from the photographing apparatus 100 and determines that an abnormality has occurred in injecting the coagulant when the floc generated by analyzing the received image is less than the set value or the turbidity is equal to or greater than the set value, A pop-up screen that can be identified by the display device 300 is displayed.

At this time, a plurality of photographing apparatuses 100 may be provided according to the size of the cohesive paper. When the plurality of photographing apparatuses 100 are provided, the control apparatus 200 divides the images photographed by the photographing apparatus 100 and controls the display apparatus 300 to display the images, A pop-up screen that is identifiable only on the display device 300 on which the image received from the photographing apparatus 100 is displayed may be displayed.

Here, the pop-up screen may be configured to change the color of the background screen at regular intervals or to output a specific character in a blinking manner to facilitate visual identification.

FIG. 6 is a block diagram illustrating a configuration of a control apparatus applied to the underwater CCTV system for flock observation according to the present invention.

Referring to FIG. 6, the controller 200 includes a receiving unit 210, a detecting unit 220, an output unit 230, a storage unit 240, and a communication unit 250.

The receiving unit 210 receives the image transmitted from the photographing apparatus 100 and transmits the received image to the detecting unit 220.

The detection unit 220 analyzes the received image to determine whether the coagulant is input.

The mixing amount of the chemicals to be injected into the admixture, that is, the mixing amount of the flocculating agent and the mixing water mixed with the flocculating agent are stirred in the flocculation paper 1, and flocs are formed.

Aluminum sulfate, aluminum chloride, iron sulfate, and iron chloride are used as coagulants, and calcium sulfate, soda ash, caustic soda, sodium alginate or activated silicic acid are used as an auxiliary agent.

At this time, when the flocculant is not supplied due to an error in the introduction of the flocculant in the water treatment plant or the amount of the flour is reduced below the standard, floc occurrence is reduced and turbidity is increased. In addition, in the agglomerate 1, as the stirring action is performed so that the agglutinating agent and the raw water are mixed well, the generated flocs flow.

Accordingly, the detection unit 220 can be configured to detect an abnormality using the still image among the received images. If the flocculant is less than the proper amount or is not put in, the cohesive force of the floc is lowered, the size thereof is significantly reduced, and the turbidity is increased.

In the present invention, the flocculation type, the number, and the turbidity of the floc can be used by using an image, that is, a still image, by using one method or two methods selected from the contour detection method or the binarization method.

First, the method of analyzing the amount and turbidity of flocs using the contour detection method will be described.

When the flocculant is used up, the size of the flock is reduced in the captured image. The outline of the flock is detected by using the brightness difference between the region judged as background and the region judged as floc in the image, and the width of the detected region And the size and number of flocs are calculated.

All pixels of the image have color information, and a contour is detected with a pixel whose brightness suddenly changes in the image area as the boundary of the object area. That is, contour detection is to detect the contour of the floc by the brightness change of the pixel, and the brightness change value can be detected by using the gradient and the Laplacian differential computation.

Also, since the turbidity is inversely proportional to the size and number of flocs in the contour detection system, it can be judged that the turbidity is increased when the size of the floc detected through the contour detection method is less than the set value or the number is less than the set value.

Alternatively, if the image is enlarged when the turbidity is increased, a step phenomenon occurs in which the outline of the floc appears as a layer. That is, if the distance between the pixel of the area determined to be the background area and the pixel determined to be floc is greater than the set number of pixels, it can be judged that the turbidity has increased.

Next, the method of analyzing the amount and turbidity of flocs using the binarization detection method will be described.

The binarization method is a method of calculating a threshold value in an image area and detecting the size and number of flocs using the calculated threshold value.

At this time, there are various methods for the image binarization method, but an adaptive binarization method can be applied in the present invention.

In the adaptive binarization method, a histogram of a part of an image is used instead of a histogram of a whole image, a threshold value of a part of the histogram is calculated, and the corresponding part is binarized using the calculated threshold value.

Further, the adaptive binarization method divides the entire area of the image into mxm small images, calculates the average brightness value of the maximum brightness value and the minimum brightness value in each pixel in the divided small image, The brightness variance value is calculated using the brightness value of the pixel, and then the brightness variance value is calculated by subtracting a constant value (user input value) from the calculated brightness variance value.

Since the threshold value according to the binarization processing is calculated according to the surrounding brightness value at the time of image capturing and the input value of the user by the binarization method, there is an advantage that the optimal threshold value for performing the binarization can be calculated.

Accordingly, if the image taken in a state in which an appropriate amount of the flocculant is not applied is processed by the binarization method, the turbidity may be displayed as dots having small pixels or the entire area may be displayed as a single color (black).

According to the design conditions, it is possible to use the two methods of the contour detection method and the binary method in combination. For example, the size and number of flocs may be detected by the contour detection method, and then the area of the detected flocs may be subjected to a binarization method to correct the shape of the flocs to detect the size and number of flocs.

In this way, when the detected flock is less than the set value or the turbidity is equal to or greater than the set value, the detecting unit 220 determines that an abnormality has occurred in the coagulant input based on the size, the number, and the turbidity of the detected flocs.

At this time, the flocs flow due to the agitating action. When judging the abnormality with respect to the input of the flocculant by using one image using the still image, a judgment error may occur. Therefore, the determination of the anomaly can be made using the average value of a plurality of images for a predetermined time.

The output unit 240 controls the receiving unit 210 to output the received image in real time. In addition, when it is determined that an abnormality has occurred in the coagulant injection according to the detection result of the detection unit 220, the controller 220 outputs a control signal for generating a specific character and a warning sound under the control of the detection unit 220.

The storage unit 250 stores and manages images received by the receiving unit 210. In addition, the detection unit 220 stores and manages the image of the still image used in the detection unit 220 and the determination result of the image of the still image.

At this time, the received images to be stored may be deleted according to the old order, so that the storage space of the storage unit 250 may be efficiently utilized.

In addition, the judgment result on the still image may be utilized as data on the abnormality with respect to the input of the coagulant, and the judgment error may be reduced by repeated learning.

The communication unit 260 communicates with the control device 200 and the external device and transmits / receives the information through communication with the management server or the like stored in the portable terminal or the remote location when the coagulant input error occurs.

On the other hand, the display device 300 and the alarm device 400 perform a function of outputting an image or outputting a warning sound under the control of the control device 200.

7 is a photograph showing a screen displayed on a display device applied to a underwater CCTV system for flock observation according to the present invention.

Referring to FIG. 7, images photographed by a plurality of photographing apparatuses 100 are separately displayed. Accordingly, when an abnormality occurs due to the introduction of the coagulant in the cohesive paper of the corresponding area, it is possible to identify the area where the abnormality has occurred based on the installation position of the photographing apparatus.

According to the present invention, it is possible to quickly detect whether or not the coagulant is input based on the photographed image, and it is possible to establish a quick response as the visual or auditory output of the abnormality is determined in the determination of the detection result .

In addition, the present invention is advantageous in that the installation cost is low in the field operation of the water treatment facility and the operation and management by the field operator is easy, so that a relatively large capacity water treatment facility can be operated with a small number of personnel.

In addition, since water of suitable water quality can be supplied for the purpose of use, reliability of water to be supplied can be secured.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: photographing apparatus 110: first perpendicular tube
120: second vertical tube 130: camera part
140: Wiper part 200: Control device
300: Display device 400: Alarm device

Claims (5)

A photographing device installed in the water of the cohesive paper to photograph an underwater image;
A control unit for receiving an image photographed by the photographing apparatus and analyzing the amount and turbidity of the floc in the received image to determine an abnormality;
A display device for displaying an image photographed by the photographing device under the control of the control device; And
An alarm device for outputting a warning sound when an abnormality occurs under the control of the control device;
And,
The control device includes:
A receiving unit for receiving an image transmitted from the photographing apparatus;
A brightness difference between a region judged as a background of an image and a region judged as a floc by using a still picture among the images received by the receiving unit is detected by using a gradient and a Laplacian differential calculation to calculate the width of the detected region, A detector for calculating the size and number of flocs;
A storage unit for storing and managing a result of the determination of the image received by the receiving unit, the image of the still image used in the detecting unit, and the image of the still image; And
A communication unit for performing communication with an external device and transmitting the information to a management server of a portable terminal or a remote place when an input of the coagulant is abnormal;
And,
The control device includes:
Analyzing the received image to determine that an abnormality has occurred in the coagulant input when the generated floc is less than the set value or the turbidity is equal to or greater than the set value, and controls the display device to display a pop-
The photographing apparatus comprises:
A first vertical pipe installed at one end of the water in the water of the cohesive paper so that the other end thereof is exposed to the upper part of the water surface; And
A camera unit installed at the tip of the first vertical tube in the water and installed to photograph an underwater image toward the lower side of the aggregated paper;
/ RTI >
The camera unit includes:
A body having an inner space formed therein and having an upper flange and a lower flange;
An upper cap coupled with the first vertical tube to communicate with the upper flange of the body;
A lower cap coupled to the lower flange of the body, the center of which is provided with a transparent glass;
A sealing member installed between the upper flange and the upper cap of the body and between the lower flange and the lower cap to seal the inside of the body;
A camera installed inside the body and photographing the water of the cohesive paper through the transparent glass of the lower cap; And
A lamp module installed on the body and arranged to be in line with the lens tip of the camera and irradiating a light source according to the application of a power source and a transparent or semi-transparent water- A lamp for illuminating a light source in a photographing direction of the camera;
Wherein the CCTV system comprises:
delete delete The method according to claim 1,
The lens of the camera is interfaced to the transparent glass of the lower cap,
Wherein the lamp is installed in a transparent glass of the lower cap, and a plurality of the lamps are provided around the lens.
The method according to claim 1,
The photographing apparatus comprises:
A second vertical tube installed parallel to the first vertical tube; And
A wiper unit installed on the second vertical tube and wiping the transparent glass outside of the lower cap according to a rotation operation;
Further comprising: means for determining whether or not the flock is in use.

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