KR20060099496A - The realtime remote measuring and monitoring system of a water level using the image recognition processing method - Google Patents

Abstract

Real-time remote water level monitoring using image recognition technique monitoring  system

The realtime remote measuring and monitoring system of a water level using the image recognition processing method

The present invention photographs the water level table installed for the purpose of measuring the water level in dams, lakes, reservoirs, etc., and measures the water level automatically by applying image processing and recognition techniques from the captured image to make the image and the water level into a DB. The purpose is to provide a real-time remote water level monitoring and monitoring system that can manage the reservoir water level efficiently and efficiently.

Level measurement is essential for controlling discharge. Currently, water level indicators are usually attached by a person to check the water level or use a magnetic level meter to detect the water level automatically.

The present invention does not check the normal level table installed for water level measurement, but rather installs a camera to shoot the level table and the water at the same time, and applies image recognition technology to automatically read the level of the level table to inform the manager. In addition, the manager can check the water level at any time through the acquired image as well as the water level measurement information, and provides technology applicable to disaster countermeasures by managing the water level efficiently and systematically.

Water level, watermark, video, image recognition, remote, monitoring, disaster prevention,

Description

The realtime remote measuring and monitoring system of a water level using the image recognition processing method}

1 is an overall configuration diagram of a real-time remote water level monitoring and monitoring system according to the present invention

2 is an exemplary view of water level detection using image processing according to the present invention.

-Explanation of symbols for the main parts of the drawings

100: watermark

200: water level monitoring equipment

210: camera

220: lighting device

230: communication device

240: controller

250: power supply

260: rainwater barrier

300: server computer

Level measurement is essential for controlling discharge. Currently, water level indicators are usually attached by a person to check the water level or use a magnetic level meter to detect the water level automatically. Magnetic level gauges are largely classified into direct and indirect levels.

Direct gauges include needle gauges, sub gauges, and wire weight gauges. Indirect gauges are devices that output pressure, electricity, and other signals proportional to the level, using pressure gauges, sonic gauges, and other light waves. Water gauges. Generally, a water level station installed for the purpose of level observation is equipped with a water gauge and a general level table.

However, these water level meters interfere with the water level measurement due to the soil and garbage flowing into the heavy rain caused by the rainy season or the typhoon, and there are frequent malfunctions, but it is difficult to judge the presence of malfunctions. Should be.

Therefore, the technical problem to be achieved by the present invention is to photograph the water level table installed for the purpose of measuring the water level in dams, lakes, reservoirs, etc., and to measure the water level automatically by applying image processing and recognition techniques from the photographed image and The purpose is to provide a real-time remote water level monitoring and monitoring system that can manage the water level of the reservoir systematically and efficiently by making the water level DB.

The present invention is not to check the normal water level installed in order to measure the water level, but to install the camera to shoot the water level and the water at the same time, and apply the image recognition technology to read the water level level automatically to inform the manager In addition, the manager can visually check the water level through the acquired image as well as the water level measurement information.

The recognition technique used to read the water level from the acquired image is implemented by using the technique of extracting the boundary of the surface from the image and the character recognition technique, or using the surface boundary extraction technique and the image area distribution.

The present invention is not to check the normal water level installed by the person directly to check the water level, but to install the camera to shoot the water level and the water at the same time by applying image recognition technology to automatically read the water level of the water level to inform the administrator In addition, the manager provides a real-time remote water level monitoring and monitoring system that can visually check the water level through the acquired image as well as the water level measurement information.

The real-time remote water level monitoring and monitoring system to be provided is composed of the water level monitoring equipment 200 and the server computer (300). The water level monitoring equipment 200 includes a camera 210, a lighting device 220, a communication device 230, a controller 240, and a power supply 250 for simultaneously photographing the water level table 100 and the water surface 110. It is constructed and protected by rainwater film 260.

The camera 210 is installed at a position higher than the highest flood level in front of the water level table to simultaneously photograph the water level table 100 and the water surface 110, and recognizes the water surface shown in the water level table from the image taken by the server computer 300. It is designed to automatically adjust the focus according to the water level to read the water level.

The lighting device 220 is installed above the camera for the purpose of providing the brightness necessary for photographing to provide a constant brightness.

The communication device 230 transmits the captured image from the controller 240 to the server computer 300 by wire or wirelessly or receives a control signal for setting the system from the server computer 300 and transmits the control signal to the controller 240.

The controller 240 is responsible for setting the camera photographing speed, focus adjustment, image transmission period, or system reset function.

The power supply unit 250 supplies stable power to the water level monitoring equipment and installs an internal battery and a lightning protector to promote stability of the equipment and prevent damage in an emergency situation (eg, power failure or lightning strike).

The server computer 300 recognizes the water level by applying an image recognition technique from the image received from the water level monitoring equipment 200, and makes a DB with the image and provides the administrator or change the setting of the water level monitoring equipment.

The image recognition method for reading the water level from the watermark image is based on the extraction method, the character recognition technique, and the image area distribution.

The boundary extraction of water surface is implemented by edge extraction technique, etc., and the water level is measured by reading the watermark number and scale through the character recognition technology.

The method of reading the water level by using the image area distribution uses the fact that the water table image is of a fixed size. In the present invention, the image taken to read the water level is a fixed-level (pixel) level table image, which shows a fixed water level range, and the number of pixels on the water and the fixed initial pixel number Finding the ratio of, we can see the change in the water level (see Figure 2). That is, the current level is determined as a function of the ratio of the total number of pixels representing the fixed level range of the entire image and the area occupied by the surface of the water in the image as follows.

S = Si-α (P / Ps) Ss

here,

P: sum of the number of pixels on the surface of the water

Ps: Sum of the number of pixels in the entire image

Ss: Fixed water level range occupied by the whole image

Si: Water level at the top of the image, reference level value

α: Weight by tilting screen

S: current water level value

ex) Si = 50m, Ss = 10m, Ps = 1024x512

-> P = 1024x256, α = 1;

S = Si-α (P / Ps) Ss = 50-1.0 * (256/512) * 10 = 45m

The real-time remote water level monitoring and monitoring system according to the present invention as described above can measure the water level of dams, lakes, reservoirs, rivers, etc., where the water table is installed, at a low price in real time, The table image has the advantage that you can check the water level situation.

The system according to the present invention enables systematic and effective management of the water level, and in particular, it is applicable to water management and pumping stations, water and sewage treatment plants of reservoirs as a countermeasure against disasters such as typhoons and heavy rain. By using CDMA bidirectional communication, you can also remotely control, maintain, and manage the water level monitoring equipment installed in the field remotely, and check the site through the mobile service where the person in charge is located, search the data, and flood the reservoir. It is expected to prevent the loss of life and property in advance.

It is possible to observe the water level anywhere using the Internet connected to the server computer, which can effectively cope with the sudden situation.

Claims (5)

The water level monitoring equipment installed to obtain the image for measuring the water level of dam, lake, reservoir and river where the water level table is installed and the obtained image are read with the image level and stored in the DB Real-time remote water level monitoring and monitoring system including a server computer that is operated for the purpose of servicing people connected to the Internet. The apparatus of claim 1, wherein the water level monitoring equipment is installed at a position higher than the highest flood level in front of the water level table so as to simultaneously photograph the water level table and the water surface. Lighting device, communication device to transmit the captured image to the server computer or remote manager, power supply device equipped with battery equipment and lightning protection device for stable power supply and preventing system stoppage in case of power failure, controlling operation and setting of each device A real-time remote water level monitoring and monitoring system, comprising a controller and a rainwater screen, comprising a server computer for image recognition and DB management. The server computer of claim 1, wherein the server computer reads the water level at which the water surface is located from the water level table of the image received from the water level monitoring equipment by using image recognition technology, and stores the water level in the DB together with the image to be sent to the administrator and the authorized user. Real-time remote water level monitoring and monitoring system, which is in charge of the function of serving or via the Internet, and including the above-mentioned portion and the water level monitoring equipment. The image recognition technique of claim 3, wherein the applied image recognition technique includes a method of calculating a water level using a sleep detection technique and a number recognition technique to detect a boundary of sleep in an image, and a water level using a sleep detection technique and an area proportion of an image. A real-time remote water level monitoring and monitoring system that includes a method of mixing, including the part. The disaster prevention system of claim 1, wherein a real-time remote water level monitoring and monitoring system can prevent human and property damage caused by dams, lakes, reservoirs, rivers, etc. in advance.

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