KR102549534B1 - Intelligent disaster prevention management system - Google Patents

Abstract

The present invention uses a buried pipe connecting between two manholes and a laser distance measuring device to recognize deformation and deformation points of underground facilities, diagnose precursor symptoms such as leaks, flooded areas, manhole damage, and sinkholes in underground facilities, , It relates to an intelligent disaster prevention management system capable of responding quickly by predicting disasters on the road in advance, buried underground to connect between two manholes formed on the road, installed separately from the sewer pipe, and having a smaller diameter than the sewer pipe Buried pipe having; a laser distance measuring device installed at one end of the buried pipe, radiating laser light from one end to the other end of the buried pipe, and measuring the reflected light; a target installed at the other end of the buried pipe and reflecting the laser light toward the laser distance measuring device; Covers a manhole formed on the road, measures disaster prevention information of the place where the manhole is installed and transmits it in a short-range wireless communication method, and the disaster prevention information includes at least laser distance measurement information measured by the laser distance measurement device. manhole cover; And a disaster prevention server including a ground change diagnosis unit that receives the disaster prevention information from the smart manhole cover, performs disaster prevention management in the downtown area, and receives the laser distance measurement information to diagnose whether there is a ground change and a ground change point.
According to the present invention, real-time distance measurement is performed using a small-diameter buried pipe connecting two manholes and a laser distance measuring device passing through the buried pipe, and the measurement information is collected from the smart manhole cover and transmitted to the disaster prevention server. In the disaster prevention server, by recognizing the deformation and deformation point of underground facilities from the result of laser distance measurement, and by diagnosing precursor symptoms such as leakage of underground facilities, flooded area, manhole damage, sinkhole, etc., disasters on the road are predicted in advance. It has the ability to respond quickly.

Description

Intelligent Disaster Management System {INTELLIGENT DISASTER PREVENTION MANAGEMENT SYSTEM}

The present invention relates to an intelligent disaster prevention management system, and more particularly, recognizes the deformation and deformation point of underground facilities using a buried pipe connecting two manholes and a laser distance measuring device, leaks of underground facilities, flooded areas, It relates to an intelligent disaster prevention management system capable of diagnosing precursor symptoms such as manhole damage and sinkhole, predicting road disasters in advance and responding quickly.

In general, a manhole is installed at a predetermined depth on a road to inspect underground facilities and sewage pipes. The manhole is a vertical hole with a diameter of approximately 1 to 1.2 m, and the bottom surface is formed to be the same as a conduit for the distribution of sewage or to be lowered to a lower height (approximately 1 m depth) than the conduit to accommodate sediment. A cover is installed on the top of the manhole to conceal the hole. Manhole covers are made of cast iron or reinforced concrete to prevent damage from ground vehicles.

However, as loads and vibrations applied to the manhole cover are repeated on roads with heavy traffic, the manhole cover is frequently damaged. In addition, there are cases where the manhole cover is damaged in large-scale construction sites where heavy special vehicles frequently move. In addition, a sewage pipe passing underground may cause water leakage due to road conditions or ground subsidence, and in some cases may cause a sinkhole or the like. Therefore, it is necessary to detect early symptoms such as leaks in underground facilities, flooded areas, manhole damage, and sinkholes, and promptly repair them.

On the other hand, Japanese Patent Registration No. 6547068 proposes a manhole monitoring system for preventing theft of manholes and accidents caused by natural phenomena. Referring to the same prior literature, an acceleration sensor, a temperature sensor, an odor sensor, a water quality sensor, a substrate sensor, a flow sensor, and a water level sensor are installed in the manhole to remotely monitor the state of the manhole.

However, the prior art senses the open/closed state of the manhole and determines the state of the manhole, which is only a follow-up response in a manner that is detected after the manhole cover has already been lost or completely damaged. In addition, there is a limit to diagnosing disaster phenomena such as leaks in sewage pipes, flooded areas, and sinkholes at points where manholes are not installed.

Japanese Patent Registration No. 6547068

The present invention uses a buried pipe connecting between two manholes and a laser distance measuring device to recognize deformation and deformation points of underground facilities, diagnose precursor symptoms such as leaks, flooded areas, manhole damage, and sinkholes in underground facilities, The purpose of this study is to provide an intelligent disaster prevention management system capable of predicting disasters on the road in advance and responding quickly.

An intelligent disaster prevention management system according to an embodiment of the present invention is buried underground to connect between two manholes formed on the road, and is installed separately from the sewer pipe and has a smaller diameter than the sewer pipe; a laser distance measuring device installed at one end of the buried pipe, radiating laser light from one end to the other end of the buried pipe, and measuring the reflected light; a target installed at the other end of the buried pipe and reflecting the laser light toward the laser distance measuring device; Covers a manhole formed on the road, measures disaster prevention information of the place where the manhole is installed and transmits it in a short-range wireless communication method, and the disaster prevention information includes at least laser distance measurement information measured by the laser distance measurement device. manhole cover; And a disaster prevention server including a ground change diagnosis unit that receives the disaster prevention information from the smart manhole cover, performs disaster prevention management in the downtown area, and receives the laser distance measurement information to diagnose whether there is a ground change and a ground change point.

In the intelligent disaster prevention management system according to another embodiment of the present invention, the buried pipe has a diameter of 1 cm or less.

In the intelligent disaster prevention management system according to another embodiment of the present invention, the smart manhole cover further includes a displacement sensor for detecting the displacement of the ground surface on which the smart manhole cover is installed, and the disaster prevention server moves the displacement from the smart manhole cover. It further includes a manhole damage determination unit for receiving the detection value of the sensor and determining whether the manhole and the smart manhole cover are damaged.

In the intelligent disaster prevention management system according to another embodiment of the present invention, when the disaster prevention server exceeds the predetermined sinkhole prediction reference value, the laser distance measurement information received from three or more smart manhole covers located within a predetermined radius, A sinkhole prediction unit for determining an area surrounded by the smart manhole cover as a sinkhole risk area is further included.

According to the intelligent disaster prevention management system of the present invention, real-time distance measurement is performed using a small-diameter buried pipe connecting between two manholes and a laser distance measuring device passing through the buried pipe, and the measurement information is collected from the smart manhole cover and transmits it to the disaster prevention server, and the disaster prevention server recognizes the transformation and deformation point of the underground facility from the result of laser distance measurement, and diagnoses the precursor symptoms such as leak, flooded area, manhole damage, sinkhole, etc. of the underground facility, thereby preventing disasters on the road It has the effect of being able to respond quickly by predicting in advance.

1 is a block diagram illustrating an intelligent disaster prevention management system according to the present invention;
2 is a cross-sectional view showing an example in which a smart manhole cover is installed in the present invention;
3 is a diagram illustrating a buried pipe and a laser distance measuring device connecting between two manholes according to the present invention;
4 is a front view illustrating a first sensing substrate constituting the water level sensor of the present invention;
5 is a rear view illustrating a second sensing substrate constituting the water level sensor of the present invention;
6 is a front view illustrating a second sensing substrate constituting the water level sensor of the present invention;
7 is a block diagram showing an example of the configuration of a smart manhole cover in the present invention;
8 is a diagram conceptually depicting an example of measuring micro-displacement of an inclined surface of a disaster prevention information collection pole in the present invention;
9 is a block diagram showing a configuration example of a disaster prevention information collection poll in the present invention;
10 is a flowchart illustrating a process of measuring micro-displacement of a disaster prevention information collection pole in the present invention, and
11 is a diagram depicting a process in which a disaster prevention server predicts a sinkhole area in the present invention.

Hereinafter, specific embodiments according to the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Parts having similar configurations and operations are given the same reference numerals throughout the specification. In addition, the drawings accompanying the present invention are for convenience of description, and the shape and relative scale may be exaggerated or omitted.

In describing the embodiments in detail, redundant descriptions or descriptions of obvious technologies in the art are omitted. In addition, when a certain part "includes" another component in the following description, this means that it may further include components other than the described components unless otherwise stated.

In addition, terms such as "~ unit", "~ group", and "~ module" described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. can In addition, when a part is said to be electrically connected to another part, this includes not only the case where it is directly connected but also the case where it is connected with another component interposed therebetween.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention.

1 is a block diagram illustrating a disaster prevention management system using a smart manhole cover according to the present invention.

Referring to FIG. 1, the disaster prevention management system using the smart manhole cover of the present invention includes a smart manhole cover 100, a disaster prevention information collection pole 200, a disaster prevention server 400, and a disaster prevention information database server 500. It consists of

The smart manhole cover 100 is a device that covers the manhole 600 formed on the road, and measures disaster prevention information of the place where the manhole 600 is installed and transmits it in a wireless communication method. The smart manhole cover 100 is a means installed at multiple points on the road, and is formed in a circular or oval shape installed parallel to the ground surface.

The smart manhole cover 100 includes a communication module. The communication module may be a broadband mobile communication module that directly transmits disaster prevention information to the remote disaster prevention server 400 . As another example, the communication module may be a short-range wireless communication module. In this case, the disaster prevention information collection pole 200 may receive disaster prevention information from the smart manhole covers 100 and relay it to the remote disaster prevention server 400.

Disaster prevention information may include laser distance measurement information, manhole surface displacement information, manhole vibration amount information, and manhole water level information. Predict whether or not there is a risk of flooding of sewage, and predict sinkholes. The structure and configuration of the smart manhole cover 100 and disaster prevention information generated from the smart manhole cover 100 will be described in detail later with reference to FIGS. 2 to 7 .

The disaster prevention information collection pole 200 collects disaster prevention information from the smart manhole cover 100 through short-range wireless communication and remotely transmits the collected disaster prevention information to the disaster prevention server 400 through broadband mobile communication. In the present invention, the disaster prevention information collection pole 200 not only simply collects information, but also serves to generate some of the disaster prevention information. Although described later with reference to FIGS. 8 to 10 , the disaster prevention information collection pole 200 may generate rainfall information and ground surface displacement information of a slope and transmit the generated information to the disaster prevention server 400 .

The disaster prevention server 400 receives disaster prevention information from the disaster prevention information collection pole 200 through the broadband mobile communication network 300 . In this embodiment, the disaster prevention information includes laser distance measurement information, manhole surface displacement information, manhole vibration amount information, and manhole water level information generated from the smart manhole cover 100, rainfall information generated from the disaster prevention information collection pole 400, and slope surface is the micro-variation information of the index displacement of The received disaster prevention information is stored and managed in the disaster prevention information database server 500 .

Referring to FIG. 1 , the disaster prevention server 400 includes a manhole damage determination unit 410, a flooded area diagnosis unit 420, a sinkhole prediction unit 430, and a ground change diagnosis unit 440.

The manhole damage determination unit 410 may determine whether the smart manhole cover 100 is damaged or not from the manhole index displacement information. For example, when the displacement of one smart manhole cover 100 is detected to be greater than that of the other smart manhole covers 100 among the smart manhole covers 100 within a predetermined radius, the corresponding smart manhole cover 100 is damaged. can determine As another example, it is possible to determine whether the smart manhole cover 100 is damaged by combining manhole surface displacement information and manhole vibration amount information. The manhole damage determination unit 410 may generate a traffic control command for controlling traffic around the smart manhole cover 100 determined to be damaged.

The flooded area diagnosis unit 420 may diagnose the area where the smart manhole cover 100 is located as a flooded area when the manhole water level information received from the smart manhole cover 100 exceeds a predetermined reference value. For example, an area in which there is a risk of sewage overflow due to a clogged sewer pipe may be determined as a flooded area regardless of the amount of rainfall. The flooded area diagnosis unit 420 may diagnose a flooded area by combining the rainfall information received from the disaster prevention information collection pole 200 and the manhole water level information received from the smart manhole cover 100. Preferably, the flooded area diagnosing unit 420 may adjust a reference value for determining a flooded area to be lower as the amount of rainfall included in the rainfall information is greater, and a reference value for determining a flooded area to be higher as the amount of rainfall is smaller.

The sinkhole prediction unit 430 has a predetermined sinkhole prediction reference value for laser distance measurement information and/or manhole surface displacement information received from three or more smart manhole covers 100 among smart manhole covers 100 located within a predetermined radius. When exceeding (eg, when laser distance measurement information is not detected or indicates a distance smaller than the reference value, or when manhole surface displacement information lower than the reference value for determining manhole damage is detected), the reference value is exceeded The area surrounded by the smart manhole cover 100 is determined to be a sinkhole risk area. Details will be described later with reference to FIG. 11 .

Figure 2 is a cross-sectional view showing an example of installing a smart manhole cover in the present invention, Figure 3 is a view illustrating a buried pipe and a laser distance measuring device connecting two manholes according to the present invention, Figure 4 is a view of the present invention A front view illustrating a first sensing substrate constituting the water level sensor, FIG. 5 is a rear view illustrating a second sensing substrate constituting the water level sensor of the present invention, and FIG. It is a front view illustrating a sensing substrate, and FIG. 7 is a block diagram showing an example of the configuration of a smart manhole cover in the present invention.

Referring to FIG. 2, the smart manhole cover 100 is installed to cover the upper opening of the manhole 600. The uppermost cover 110 installed parallel to the ground is made of a tempered glass material. A solar panel 120 for receiving sunlight is installed on the lower surface of the cover 110, and a displacement sensor 130 and a solar cell module 140 are installed below the solar panel 120.

The displacement sensor 130 is a means for detecting the displacement of the ground surface on which the smart manhole cover 100 is installed. Preferably, the displacement sensor 130 includes a cover 110, that is, a first gyro sensor composed of a 3-axis angular velocity sensor in which the X-axis and the Y-axis are parallel to the ground and the Z-axis is installed at a right angle, and the cover 110 ) It is composed of a module including a second gyro sensor composed of a three-axis angular velocity sensor in which the Z-axis is installed in parallel with respect to

The first gyro sensor extracts the rotational angles of the X and Y axes of the lid 110 by integrating them with time, and the displacement of the lid 110 in the horizontal direction can be measured from this value. However, if a cumulative integration error occurs due to long-term use, the rotation angle of the Z-axis perpendicular to the cover 110 may converge to zero. By correcting the error, it is possible to measure the displacement of the lid 110 with high precision.

Referring to FIG. 3, a buried pipe 660 is installed underground to connect between the two manholes 600a and 600b. The buried pipe 660 is a pipe through which the laser light 680 passes, and preferably has a diameter of 1 cm or less. If the buried pipe 660 is bent or bent due to ground fluctuations, the deformation of the ground can be precisely detected by detecting the light reflected from the inner wall surface of the laser light 680. If the buried pipe 660 is damaged and there is no reflector that reflects the laser light, laser distance measurement is not performed, indicating that the ground is seriously deformed.

As shown, the laser distance measuring device 650 is installed at the end of the buried pipe 660 of the first manhole 600a among the two manholes 600a and 600b connected by the buried pipe 660, and the second manhole 600b A target 670 for reflecting laser light is installed at the end of the buried pipe 660 of ).

The control unit 155 of the smart manhole cover 100 transmits the laser distance measurement information measured by the laser distance measuring device 650 to the remote disaster prevention server 400.

Referring to FIG. 2 , the water level sensor 150 detects the water level of sewage 620 in the manhole 600 . In the present invention, the water level sensor 150 has a structure in which a first sensing substrate 160 and a second sensing substrate 180 are connected, and electrodes for measuring the water level are connected to the first sensing substrate 160 and the second sensing substrate. (180). The first sensing substrate 160 and the second sensing substrate 180 are installed in close contact with the inner wall of the manhole 600 . The signal line 190 extending from the second sensing substrate 180 is connected to the side of the cover 110 so that the water level detection signal is transmitted to the substrate within the cover 110 .

The first sensing substrate 160 is a substrate for detecting a water depth of 100 cm to 50 cm of sewage, and the second sensing substrate 180 is a means for detecting a water depth of 50 cm to 0 cm (full water level). Separating and installing the water level sensor 150 on two substrates allows the substrate to be narrowly designed while forming a plurality of water level electrodes on the sensing substrates, thereby reducing manufacturing and installation costs and increasing mass productivity.

Referring to FIG. 4 , the first sensing substrate 160 is a substrate installed at the bottom of the manhole 600, and the ground electrode 170 is printed on the base portion to be exposed, and a plurality of sensors are installed at different heights from the base portion to the top portion. The water level electrodes 190a, 190b, 190c, 190d, 190e, and 196a are printed to be exposed.

On the top of the first sensing substrate 160, electrode pads connected to the ground electrode 170 and the water level electrodes 190a, 190b, 190c, 190d, 190e, and 196a through an electrode line and insulated from each other are disposed so that the first electrode A connection portion 162 is formed.

A phrase indicating a water depth of 100 cm is printed on the base of the first sensing substrate 160, and installation holes 172 are formed at predetermined intervals in an area where electrodes are not printed in the center. Therefore, the installation worker easily attaches the first sensing substrate 160 to the inner wall of the manhole 600 by fastening a screw or the like through the installation hole 172 while placing the 100 cm mark of the first sensing substrate 160 on the base. It can be installed in a tight fit.

The ground electrode 170 is connected to the outermost electrode pads on both sides of the first electrode connector 162 through the first sensing substrate 160 . Also, the first water level electrodes 190a, 190b, 190c, 190d, and 190e are disposed with a height difference of 10 cm, which is a first height difference. The first water level electrode 190a at the lowest base is disposed along the outermost line of the effective electrode arrangement area of one side line (the right line in FIG. 4) of the first sensing substrate 160, and has the next height (90 cm height). The first water level electrode 190b is disposed along the outermost line of the effective electrode arrangement area of the other line (the left line in FIG. 4 ) of the first sensing substrate 160 . And the third lowest first water level electrode 190c is again disposed along the right side line of the first sensing substrate 160, and disposed along the outermost line inside the line where the first water level electrode 190a of the base is formed. do. In this way, by arranging the water level electrodes in an odd-even manner using the lines on both sides of the first sensing substrate 160 from the bottom to the top, dielectric breakdown between water level electrodes of neighboring heights can be prevented. And, it is possible to efficiently arrange the water level electrodes within the limited width of the substrate.

On the other hand, as shown in FIG. 2, when the sewage 620 is at a lower water level than the sewage pipe 610, there is no need to measure the water level at close intervals, so the first water level electrodes 190a, 190b, 190c, 190d, 190e ) are arranged with a height difference of 10 cm. However, since it is necessary to detect the water level more precisely by narrowing the water level measurement interval from the point passing through the sewer pipe 610, the second water level electrodes 196a, 196b, 196c, 196d, and 196e have a second height difference smaller than the first height difference. They are arranged with a height difference of 5 cm. Referring to FIG. 4 , the second water level electrode 196a disposed on the top of the first sensing substrate 160 is disposed with a height difference of 5 cm from the previous first water level electrode 190e, and the corresponding second water level electrode 196a ) is an electrode for detecting the water level at 55 cm. The remaining second water level electrodes 196b, 196c, 196d, and 196e are disposed on the second sensing substrate 180 as shown in FIG. 6 .

5 depicts the back side of the second sensing substrate 180 . Referring to FIG. 5 , the second electrode connection part 182 is formed on the bottom of the rear surface of the second sensing substrate 180, and the third electrode connection part 184 is formed on the upper surface of the rear surface. The second electrode connection portion 182 and the third electrode connection portion each include electrode pads having the same number and shape as the first electrode connection portion 162 . As the top of the front surface of the first sensing substrate 160 and the bottom of the rear surface of the second sensing substrate 180 overlap and are assembled, the first electrode connection part 162 and the second electrode connection part 182 are connected. Also, each electrode pad of the second electrode connection part 182 and each electrode pad of the third electrode connection part 184 are connected by electrode lines patterned to be mutually insulated. Accordingly, the ground electrode 170, the first water level electrodes 190a, 190b, 190c, 190d, and 190e, and the second water level electrode 196a are connected from the signal lines connected to the respective electrode pads of the third electrode connection part 184. signals can be recognized.

6 depicts the front side of the second sensing substrate 180 . A mark indicating a water depth of 50 cm is printed on the lower front surface of the second sensing substrate 180 . Also, installation holes 192 are formed at predetermined intervals along the longitudinal direction of the second sensing substrate 180 . Since the electrodes are concentrated in the center of the second sensing substrate 180, the installation hole 192 may not be formed.

The second water level electrodes 196b, 196c, 196d, and 196e and the third water level electrodes 198 are disposed upward from the base of the second sensing substrate 180 . Similar to the installation rules of the first sensing substrate 160, the second water level electrode 196b at the lowest base is the outermost part of the effective electrode arrangement area of one side line (the right line in FIG. 6) of the second sensing substrate 180. The second water level electrode 196c having the next height (45 cm height) is disposed along the outermost line of the effective electrode arrangement area of the other line (the left line in FIG. 6) of the second sensing substrate 180. do. In this way, the water level electrodes of each height are arranged along the outermost line of the effective electrode arrangement area toward the top, and arranged in an odd-even method using the lines on both sides of the second sensing substrate 180. , it becomes possible to efficiently arrange the electrodes while maintaining the insulation between the electrodes.

As shown, the third water level electrodes 198 are disposed with a height difference of 1 cm, which is a third height difference smaller than the second height difference. Referring to FIG. 6 , the third water level electrodes 198 are disposed with a height difference of 1 cm from 30 cm to 0 cm indicating the full water level. Therefore, it is possible to detect the level of sewage with higher precision from 30 cm to the full water level.

Referring to FIG. 6 , a fourth electrode connector 186 is disposed on the uppermost front surface of the second sensing substrate 180 . The fourth electrode connection part 186 is composed of a plurality of electrode pads insulated from each other, and each of the electrode pads is connected to the second water level electrodes 196b, 196c, 196d, and 196e and the third water level electrodes 198 and electrodes. They are connected through line patterns.

Referring to FIG. 7, the smart manhole cover 100 of the present invention includes a water level sensor 150, a displacement sensor 130, a vibration sensor 151, a laser distance measuring device 650, and a solar cell module. 140, a power supply unit 153, a control unit 155, a short-distance wireless communication module 157, and a disaster prevention information transmission unit 159.

The structure of the water level sensor 150 has been described with reference to FIGS. 4 to 6 . The water level sensor 150 has an input terminal connected to each of the electrode pads constituting the third electrode connection part 184 and the fourth electrode connection part 186 (2 terminals connected to the ground electrode, 5 terminals connected to the first water level electrode). terminal, 5 terminals connected to the second water level electrode, and 30 terminals connected to the third water level electrode). The microprocessor may recognize the water level electrode of the lowest level being energized with the ground electrode and output a corresponding water level detection signal to the control unit 155 . As another example, the water level sensor 150 has output pins of 42 terminals, detects whether each terminal is energized in a microprocessor embedded in the controller 155, recognizes the water level of the sewage 620, and generates manhole level information. You may.

The control unit 155 generates manhole index displacement information representing the amount of position change of the smart manhole cover 100 from the detection value of the displacement sensor 130. The process of detecting the displacement of the ground surface on which the smart manhole cover 100 is installed by the displacement sensor 130 is as described above.

The vibration sensor 151 is a sensor that detects vibration applied to the smart manhole cover 100, and the control unit 155 generates manhole vibration amount information representing the amount of vibration from the detection value of the vibration sensor.

The power supply unit 153 controls charging and discharging of the solar cell module 140 and supplies the power stored in the solar cell module 140 to each component of the smart manhole cover 100.

The short-range wireless communication module 157 is preferably a Bluetooth Low Energy (BLE) module or a Long Range (LoRa) communication module having a larger communication radius.

The disaster prevention information transmission unit 159 is a means for transmitting disaster prevention information including manhole surface displacement information, manhole water level information, and manhole vibration amount information generated by the control unit 155 to the disaster prevention information collection pole 200 by short-distance wireless communication. am.

When transmitting disaster prevention information, the disaster prevention information transmission unit 159 may transmit a data packet including a unique ID or physical address assigned to each smart manhole cover 100. As another example, although not shown, the smart manhole cover 100 further includes a GPS module, and location information measured by the GPS module may be included in disaster prevention information and transmitted to the disaster prevention information collection pole 200.

8 is a diagram conceptually depicting an example of measuring micro-displacement of an inclined surface of a disaster prevention information collection pole in the present invention, and FIG. 9 is a block diagram showing a configuration example of a disaster prevention information collection pole in the present invention. It is a flowchart illustrating the process of measuring the micro displacement of the information collection pole.

In the present invention, the disaster prevention information collection pole 200 does not stop at merely relaying disaster prevention information, and can generate a signal for minute fluctuations in the indicator of the slope itself and transmit it to the disaster prevention server 400. 8 shows an example of measuring minute fluctuations in surface displacement of a slope in the disaster prevention information collection pole 200 .

Referring to FIG. 9 , at least one disaster prevention information collection pole 200 among disaster prevention information collection poles 200 may be installed in a mountainous area or on a slope of a road. In addition, a reference pole 250 having a spherical reflector 252 at a predetermined height may be further installed at a position spaced apart from the disaster prevention information collection pole 200 by a predetermined distance.

A laser distance measuring device 210 is installed at a predetermined height of the disaster prevention information collection pole 200 . The laser light transmitter 212 of the laser distance meter 210 directs the spherical reflector 252 to emit laser light, and the laser light receiver 214 transmits the light reflected from the light reflective contact point of the spherical reflector 252 and returns. receive In the illustrated example, although the light emitting line and the receiving line are illustrated in a state of being spaced apart in terms of the representation of the drawing, in reality, light reflection will be made at one contact point of the spherical reflector 252 .

Referring to FIG. 8 , a remote terminal unit (RTU) 220, a solar panel 230, and an antenna 240 are installed in the disaster prevention information collection pole 200.

The remote data collection unit 220 collects disaster prevention information from the smart manhole cover 100 and transmits it to the disaster prevention server 400. In addition, from the value detected by the laser distance measuring device 210, micro-variation data of the surface displacement of the slope surface is generated, and the generated data is transmitted to the disaster prevention server 400.

The antenna 240 is a means for transmitting the ground displacement micro-variation signal from the remote data collection unit 220 as a radio signal. For example, the ground displacement micro-variation signal may be remotely transmitted through the antenna 240 in the form of Code Division Multiple Access (CDMA), Long Term Evolution (LTE), or 5G.

Referring to FIG. 9, the disaster prevention information collection pole 200 further includes a rain gauge 272, and the remote data collection unit 220 includes a laser light transmitter 274, a laser light receiver 276, and a timing It may include a controller 278, a control unit 260, a broadband mobile communication module 280, and a memory unit 282. The solar cell module 284 converts light energy received from the solar panel 230 into electrical energy and stores it, and supplies operating power to each component constituting the disaster prevention information collection pole 200 .

The control unit 260 may include a rainfall information generator 262, a laser driver 264, a signal detector 266, a comparator 268, and a slight displacement recognition unit 270.

The rainfall information generation unit 262 generates rainfall information from measurement data of the rainfall meter 272 and transmits it to the disaster prevention server 400 .

The laser driver 264 is a means for operating the laser light transmitting unit 274 and the laser light receiving unit 276 . For example, the laser driver 264 operates the laser light transmitting unit 274 and the laser light receiving unit 276 by switching operation power at intervals set by the timing controller 278 .

The signal detector 266 detects and digitally samples the optical signal received from the laser light receiver 276 . For example, a signal output from the laser light receiver 276 is converted into a digital signal and sampled to generate a distance measurement value.

The comparator 268 is a means for comparing a preset value and a currently measured distance measurement value. The displacement micro-variation recognizing unit 270 generates a micro-variation signal of the ground surface displacement of the slope from the output signal of the comparator 268, and the micro-variation signal of the ground surface displacement of the inclined surface is transmitted to the disaster prevention server 400 through the broadband mobile communication module 280. is transmitted

The memory means 282 is a means for storing a preset value set by the control unit 260 and a distance measurement value detected by the signal detection unit 266 together with a measurement time.

10 is a flowchart illustrating a process of generating a slope ground surface displacement minute fluctuation signal in the disaster prevention information collection pole 200. Referring to FIG. 10, the process of generating the slope index displacement minute fluctuation signal in the present invention will be described.

First, power is supplied to the laser distance meter 210 to start measuring the laser distance (ST910). Then, it is determined whether the number of measurements reaches a predetermined number N (ST920).

When a plurality of times of measurement is completed, an average value of distance measurement values is calculated to set a preset value (ST930).

Then, the laser distance measuring device 210 is operated to obtain a current distance measurement value (ST940). Next, it is determined whether the current distance measurement value is out of the allowable error range of the preset value (ST950).

If the current distance measurement value deviates from the allowable error of the preset value, a slight change signal of the surface displacement of the slope surface is generated and transmitted to the disaster prevention server 400 (ST960).

Now, referring to FIG. 1 again, the manhole damage determination unit 410 of the disaster prevention server 400 can determine whether the smart manhole cover 100 is damaged by using the manhole surface displacement information received from the smart manhole cover 100. there is. For example, the average value of manhole index displacement of a plurality of smart manhole covers 100 located within a predetermined radius is calculated, and the deviation between the average value and each manhole index displacement is calculated. And if the deviation exceeds a predetermined reference value, it is determined that the corresponding smart manhole cover 100 corresponds to the symptom of a precursor to damage.

As another example, the manhole damage determination unit 410 may determine whether the smart manhole cover 100 is damaged by combining manhole index displacement information and manhole vibration amount information. For example, when both the manhole vibration amount and the manhole index displacement exceed each reference value, it can be determined that the smart manhole cover 100 that has transmitted the corresponding disaster prevention information corresponds to the symptom of a precursor to damage.

The flooded area diagnosis unit 420 may diagnose the area where the smart manhole cover 100 is located as a flooded area when the manhole water level information received from the smart manhole cover 100 exceeds a predetermined reference value. For example, when the water level sensor 150 of the smart manhole cover 100 detects the water level (eg, 30 cm water level) at the third water level electrode 198, the manhole can be diagnosed as a flooded area. there is. As another example, when the rainfall information received from the disaster prevention information collection pole 200 indicates a high rainfall, the water level reference value for diagnosing the flooded area is 55 cm corresponding to the height of the lower end of the second water level electrode 196a - the sewer pipe 610. Water level - can be adjusted to the corresponding numerical value.

Meanwhile, FIG. 11 is a diagram depicting a process in which a disaster prevention server predicts a sinkhole area in the present invention. As shown in FIG. 11, within a predetermined radius, manhole surface displacement information is predetermined at three locations of the first smart manhole cover 100a, the second smart manhole cover 100b, and the third smart manhole cover 100c. If the prediction threshold is exceeded, the sinkhole prediction unit 430 determines the area surrounded by the three smart manhole covers 100a, 100b, and 100c as a sinkhole risk zone (SH-Zone). In addition, by generating a traffic control command for the sinkhole risk zone (SH-Zone) and transmitting it to the traffic control server, it is possible to prevent falls and traffic accidents in the sinkhole risk zone in advance.

The invention disclosed above is capable of various modifications within a range that does not impair the basic idea. That is, all of the above embodiments should be interpreted as illustrative and not limited. Therefore, the protection scope of the present invention should be determined according to the appended claims, not the above-described embodiments, and when the elements defined in the appended claims are replaced with equivalents, it should be regarded as belonging to the protection scope of the present invention.

100: smart manhole cover 110: cover
120: solar panel 130: displacement sensor
140: solar cell module 150: water level sensor
151: vibration sensor 153: power supply
155: control unit 157: short-distance communication module
159: disaster prevention information transmitter 160: first sensing substrate
162: first electrode connection part 170: ground electrode
172: installation hole 180: second sensing substrate
182: second electrode connection part 184: third electrode connection part
186: fourth electrode connection part 190: signal line
192: installation hole 190a to 190e: first water level electrode
196a to 196e: second water level electrode 198: third water level electrode
200: Disaster prevention information collection pole 210: Laser distance meter
212: laser light transmitter 214: laser light receiver
220: remote data collection unit 230: solar panel
240: antenna 250: reference pole
252: spherical reflector 260: control unit
262: rainfall information generator 264: laser driver
266: signal detection unit 268: comparison unit
270: displacement minute fluctuation recognizing unit 272: rainfall gauge
274: laser light transmitter 276: laser light receiver
278: timing controller 280: broadband mobile communication module
282: memory means 284: solar cell module
300: broadband mobile communication network 400: disaster prevention server
410: Manhole damage determination unit 420: Flooded area diagnosis unit
430: sinkhole prediction unit 440: ground fluctuation diagnosis unit
500: disaster prevention information database server 600: manhole
610: sewer pipe 620: sewage
650: laser distance measuring device 660: buried pipe
670: target 680: laser light

Claims (4)

A buried pipe buried underground to connect between two manholes formed on the road, installed separately from the sewer pipe and having a smaller diameter than the sewer pipe;
a laser distance measuring device installed at one end of the buried pipe, radiating laser light from one end to the other end of the buried pipe, and measuring the reflected light;
a target installed at the other end of the buried pipe and reflecting the laser light toward the laser distance measuring device;
Covers a manhole formed on the road, measures disaster prevention information of the place where the manhole is installed and transmits it in a short-range wireless communication method, and the disaster prevention information includes at least laser distance measurement information measured by the laser distance measurement device. manhole cover; and
A disaster prevention server including a ground change diagnosis unit that receives the disaster prevention information from the smart manhole cover, performs disaster prevention management in the downtown area, and receives the laser distance measurement information to diagnose whether there is a ground change and a ground change point
An intelligent disaster prevention management system that includes a.
According to claim 1,
The buried pipe is an intelligent disaster prevention management system with a diameter of 1 cm or less.
According to claim 1,
The smart manhole cover further includes a displacement sensor that detects the displacement of the ground surface on which the smart manhole cover is installed,
The disaster prevention server further comprises a manhole damage determination unit for receiving the detection value of the displacement sensor from the smart manhole cover and determining whether the manhole and the smart manhole cover are damaged.
According to any one of claims 1 to 3,
The disaster prevention server determines that the area surrounded by the smart manhole cover is a sinkhole risk area when the laser distance measurement information received from three or more smart manhole covers located within a predetermined radius exceeds a predetermined sinkhole prediction reference value. An intelligent disaster prevention management system further comprising a sinkhole prediction unit.

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