KR102321979B1 - Water pipe monitoring system operation method - Google Patents

Abstract

The present invention relates to a method of operating a water supply pipe monitoring system. An object of the present invention is to provide a method for operating a water pipe monitoring system with improved reliability in terms of a system operation. A method of operating a water supply pipe monitoring system according to a preferred embodiment of the present invention comprises the steps of: collecting, by a data collection unit, sensing value data and SoC data from all local terminal boxes installed in a jurisdictional section at a data collection cycle for each diagnostic point; and setting a data collection period for each local terminal box within the jurisdictional section on the basis of the collected sensing value data and SoC data by the collection period setting unit. According to the present invention, on the basis of collected sensing value data and SoC data, the data collection period for each local terminal box within the jurisdictional section is varied. Thus, a water supply pipeline monitoring system can be operated while maintaining a balance between system power supply stability and reliability of the monitoring system.

Description

Water pipe monitoring system operation method

The present invention relates to a method of operating a monitoring system for monitoring whether a water pipe is leaking or not and the location of the leak.

Currently, most of the domestic water supply pipelines are buried underground, but aging pipelines account for a significant portion, and the deterioration of pipelines is accelerating due to insufficient maintenance. Therefore, it is expected that the annual amount of leakage generated in the process of water supply will be significant. This is a big loss of water resources, and additional pressurization equipment may be required due to pressure loss, and it may also cause weakening of the soil around the leaked pipeline, making it more difficult to maintain the pipeline network.

The causes of leaks are the decrease in strength due to corrosion, inappropriate material and structure of the pipe connection part, design and construction technology, internal factors of internal corrosion due to water pressure or water quality, the surrounding environment of the buried pipe, road construction, construction, There are various factors such as external factors including damage caused by earthquakes and the like. In order to minimize the occurrence of leaks due to these various causes, it is necessary to detect, evaluate, and take follow-up measures when an actual leak occurs along with various preventive measures.

Existing leak location detection was performed by directly traversing the location where the leak is expected using portable equipment and detecting it. This is a very inefficient method, and as a way to compensate for this, real-time pipelines are monitored using a sensor network, such as installing multiple sensors on the pipeline and measuring and detecting seismic waves based on both sensors at the point where the leak occurred. A monitoring technique was presented.

However, the method of monitoring real-time pipelines using a sensor network requires considerable reliability in terms of system operation because the system is built over a wide area.

1. Registered Patent Publication No. 10-1696675 (Registration Date 2017.01.10.) 2. Registered Patent Publication No. 10-1791953 (published on October 25, 2017)

An object of the present invention is to provide a method for operating a water supply pipe monitoring system with improved reliability in terms of system operation.

A method of operating a water supply pipe monitoring system according to an exemplary embodiment of the present invention includes: collecting, by a data collection unit, sensing value data and SoC data at a data collection cycle for each diagnostic point from all local terminal boxes installed in a jurisdiction; and setting, by a collection period setting unit, a data collection period for each local terminal box within a jurisdiction based on the collected sensing value data and SoC data.

Here, the data collection unit may request and collect the sensing value data and the SoC data by alternating the first group local terminal box and the second group local terminal box at a data collection period for each diagnosis point in the entire jurisdiction.

In addition, the collection period setting unit determines whether a local terminal box having an SoC of level 1 or less exists, and if there is a local terminal box having an SoC level 1 or less, the collection period setting unit is a section in which local terminal boxes having an SoC level 1 or less are adjacent to each other is determined, and when it is determined that there is no adjacent section, the collection period setting unit may independently request a sleep mode changeover to the local terminal box having the SoC level 1 .

Also, the collection period setting unit may stop data collection for the local junction box having the SoC level 1 alone until a first SoC recovery message arrives from the local junction box having the SoC level 1 alone.

In addition, if it is determined that there are adjacent sections, the collection period setting unit sets the data collection period by changing the data collection period to the second period only for local terminal boxes with SoC level 1 or less adjacent to each other, and sets the data collection period for each diagnosis point. The initial value may be a first period, and the second period may be longer than the first period.

According to the present invention, the water supply pipe monitoring system is operated while maintaining the balance between the system power supply stability and the reliability of the monitoring system by varying the data collection period for each local terminal box within the jurisdiction based on the collected sensing value data and SoC data. can make it

1 is a schematic diagram of a water supply pipe monitoring system according to an embodiment of the present invention.
Fig. 2 is a functional block diagram of the local terminal box of Fig. 1;
Fig. 3 is a functional block diagram of the central device of Fig. 1;
4A is a flowchart of a process in which the collection period setting unit of FIG. 3 sets the data collection period.
FIG. 4B is a flowchart of a process in which the collection period setting unit of FIG. 3 sets the data collection period.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing each figure, like reference numerals have been used for like elements. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, with reference to FIGS. 1 to 4B, a water supply pipe monitoring system of the present invention will be described. Hereinafter, in order to clarify the gist of the present invention, descriptions of previously known matters will be omitted or simplified. 1 may be a monitoring system for a jurisdiction section 1000 corresponding to all or a part of a nationwide water supply pipeline.

Water pipe monitoring system of the present invention is a plurality of sensors (1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7,,,, 1-n, hereinafter '1' '), local terminal box (100-1, 100-2, 100-3, 100-4, 100-5, 100-6, 100-7,,,, 100-n, hereinafter referred to as '100') , gateways 200-1, ..., 200-m, hereinafter, collectively referred to as '200'), and a central device 300 .

The water supply pipe 2 is a plurality of diagnostic points 10-1, 10-2, 10-3, 10-4, 10-5, 10-6, 10-7, 10-n, hereinafter, collectively referred to as '10'. ) can be delimited. A plurality of diagnostic points 10 may be designated for each manhole point, for example.

The sensor 1 may be installed at each diagnostic point 10 . The sensor (S) may be installed inside the manhole. The sensor 1 may be an acoustic sensor. As is well known, when an abnormality such as a water leak occurs at a specific point in the water supply pipe, a sound corresponding to the water leak may be generated. In this case, the abnormality occurrence point may be specified using the time and the sound wave velocity at which the sensors located on both sides of the abnormality point each sensed the sound. In the present invention, specific details for specifying an abnormality occurrence point are excluded from discussion. Hereinafter, the 'sensing value' may be a signal corresponding to the sound intensity collected by the sensor 1 .

The local terminal box 100 may be installed at each diagnosis point.

The gateway 200 may be installed for each unit area (G1, ..., Gk). The gateway 200 may provide communication compatibility between the local terminal box 100 and the central device 300 . The gateway 200 may communicate with the local terminal box 100 according to a wireless communication standard. The gateway 200 may communicate with the central device 300 according to a wired communication standard. The gateway 200 may have a built-in communication protocol conversion function for compatibility between wireless communication standards and wired communication standards. The gateway 200 may provide communication between the local terminal box 100 installed in a unit area and the central device 300 .

The central device 300 may perform overall monitoring and control operations for the jurisdictional section 1000 .

Referring to FIG. 2 , the local terminal box 100 includes a sensing value collection unit 110 , a battery 120 , a solar power generation unit 130 , an SoC collection unit 140 , a data transmission unit 150 , and a communication unit 160 . ) may be included.

When there is a data request from the central device 300 , the sensed value collecting unit 110 may collect a sensed value from the sensor 1 .

The battery 120 may store the power generated by the photovoltaic unit 130 . The battery 120 may provide the stored power as a power source of the local terminal box 100 .

The photovoltaic unit 130 includes a photovoltaic panel, and may generate power using sunlight.

The SoC collection unit 140 may determine the SoC (State of Charge) of the battery 120 . When there is a data request from the central device 300 , the data transmission unit 150 may transmit the sensing value data collected through the sensing value collection unit 110 and SoC data of the battery 120 to the central device 300 . .

The communication unit 160 may provide communication between the local terminal box 100 and the gateway 200 according to a wireless communication standard. A specific operation of the local terminal box 110 will be described later.

Referring to FIG. 3 , the central device 300 may include a data collection unit 310 , a collection period setting unit 320 , an abnormal section determining unit 330 , and a communication unit 340 .

The data collection unit 310 may collect sensing value data and SoC data from all local terminal boxes 100 installed in the jurisdictional section 1000 .

The collection period setting unit 320 may vary the data collection period from the local terminal 100 based on the sensing value data and SoC data collected by the data collection unit 310 .

The abnormal section determining unit 330 may determine a point where the abnormality occurs when the abnormality occurs based on the sensed value data collected by the data collection unit 310 .

The communication unit 340 may provide communication between the central device 300 and the gateway 200 according to a wired communication standard.

Hereinafter, the collection period setting unit 320 sets the sensing value and SoC data collection period for each local terminal box 100 (in other words, by diagnosis point) based on the sensing value and SoC collected from the local terminal box 100 . Describe what to do.

First, in the initial state, the data collection unit 310 alternately in the first group local terminal box 100 and the second group local terminal box 100 at the data collection cycle for each diagnostic point 10 in the entire jurisdictional section 1000 and the sensing value Data and SoC data can be requested and collected (S1). Here, the initial value of the data collection period may be the first period. The first group local terminal box 100 means the odd-numbered local terminal box 100 based on the starting point (S) of the jurisdiction section, and the second group local terminal box 100 is an even number based on the starting point (S) of the jurisdiction section. It may mean the second disposed local terminal box 100 . Even if the neighboring sensors (S) are alternately monitored one by one before an abnormality occurs, the reliability of the monitoring system can be sufficiently maintained, so monitoring as in S1 may be useful in terms of power consumption reduction. The sensing value collecting unit 110 and the SoC collecting unit 140 of the local terminal box 100 that have received the sensing value data and the SoC data request obtains the sensor value and the SoC value, respectively, and provides it to the data transmitter 150 . can In this case, the data transmission unit 150 may provide the sensor value and the SoC value to the data collection unit 310 .

In addition, the collection period setting unit 320 may determine whether there is a local terminal box 100 having an SoC of level 1 or less ( S2 ). If it is determined that it does not exist in S2, it may return to S1.

If it is determined that there exists in S2, the collection period setting unit 320 may determine whether there is a section in which the local terminal box 100 having an SoC of level 1 or less is adjacent to each other (S3). If it is determined in S3 that there are no adjacent sections, the collection period setting unit 320 may independently request the sleep mode switch to the local terminal box 100 having the SoC level 1 (S4). In addition, data collection for the local junction box having the SoC level 1 may be stopped until the first SoC recovery message arrives from the local junction box having the SoC level 1 alone (S4). In this case, the collection period setting unit 320 may independently set the data collection period for the local terminal box having the SoC level 1 to infinity. When the SoC of the battery 120 exceeds level 1, the SoC collection unit 140 of the local terminal box 100 that has received the sleep mode switch request provides a first SoC recovery message to the collection period setting unit 320. can In this case, the collection period setting unit 320 may set the data collection period for the local terminal box 100 that has provided the first SoC recovery message as the first period. Proceeding as in S4 is to secure enough SoC in the local terminal box with an SoC of level 1 or less in advance in preparation for the occurrence of an anomaly. After S4, it may return to S1.

In S3, if it is determined that there are adjacent sections, the collection period setting unit 320 may set the data collection period by changing the data collection period to the second period only for the local terminal box 100 with an SoC of level 1 or less adjacent to each other ( S5). Here, the second period may be a longer period than the first period. This is because the reliability of the monitoring system can be maintained even when the data collection period is changed to the second period only for the local terminal box 100 having an SoC of level 1 or lower adjacent to each other before the occurrence of an abnormality. And, since there may be a blank area in the monitoring section, if there are local terminal boxes 100 with SoC level 1 or lower adjacent to each other, all of the neighboring local terminal boxes 100 cannot be switched to the sleep mode, so the data collection cycle is reduced. It is desirable to restore the SoC while lengthening.

In addition, the collection period setting unit 320 may determine whether there is a sensed value corresponding to an abnormality among the collected sensed values (S6). If it is determined that it does not exist in S6, it may return to S1. In S6 , the sensed value corresponding to the abnormality may be a sensing value that is a predetermined ratio (eg, 50%, less than or equal to the 'first threshold') of a threshold of a sensing value serving as a preset abnormality occurrence determination criterion.

In S6 , if it is determined that the sensed value corresponding to the abnormal symptom exists, the collection period setting unit 320 may select a section in which the abnormal symptom exists ( S7 ). At this time, the collection period setting unit 320 may select a constant pipe between the local terminal box 100 that provides a large sensing value in the first and second order among the collected sensing values as a section in which anomalies exist. .

At this time, the collection period setting unit 320 may determine whether the SoC of all of the local terminal boxes 100 located on both sides of the section in which the abnormality exists exceeds level 2 (S8). Here, level 2 in S8 may be a lower value than level 1 in S2.

In S8, if it is determined that the SoC of both the local terminal boxes 100 located on both sides of the section in which the abnormality exists exceeds level 2, the data collection period of the local terminal boxes 100 located on both sides of the section in which the abnormality exists is removed. It can be changed to 3 cycles (S9). Here, the third period may be a shorter period than the first period in S1. And, it is possible to stop the data collection period of the local terminal box 100 adjacent to the local terminal box 100 located on both sides of the section where the abnormality exists (S9). This is because the local terminal box 100 located on both sides of the section where the anomaly exists replaces the monitoring responsibility of the local terminal box 100 adjacent to the local terminal box 100 located on both sides of the section where the anomaly exists. This is to remove unnecessary power consumption of the local terminal box 100 adjacent to the local terminal box 100 located on both sides of the section. After S9, it can return to S1.

In S8, if it is determined that the SoC of both the local terminal boxes 100 located on both sides of the section in which the anomaly exists does not exceed level 2, the collection period setting unit 320 sets the local terminal box located on both sides of the section in which the anomaly exists. (100) It may be determined whether all SoCs are level 2 or less (S10). In S10, if it is determined that the SoCs of all of the local terminal boxes 100 located on both sides of the section in which the abnormality exists are not level 2 or lower, only the collection period of the local terminal boxes 100 in which the SoC exceeds level 2 is changed to the third period and can be set (S11). Then, the SoC may make a sleep mode change request to the local terminal box 100 of level 2 or lower (S11). In addition, data collection of the local junction box 100 having the SoC level 2 or lower may be stopped until a second SoC recovery message arrives from the local junction box 100 having the SoC level 2 or lower ( S11 ). The collection period setting unit 320 may set the data collection period for the local terminal box having the SoC level 2 or less to infinity. When the SoC of the battery 120 exceeds level 2, the SoC collection unit 140 of the local terminal box 100 that has received the sleep mode transition request provides a second SoC recovery message to the collection period setting unit 320. can In this case, the collection period setting unit 320 may change and set the data collection period timed in the local terminal box 100 providing the second SoC recovery message to the third period. Proceeding as in S11 is to secure enough SoC in the local terminal box with SoC level 2 or less in advance in preparation for an anomaly occurrence situation. After S11, it may return to S1.

In S10, if it is determined that the SoC of all of the local terminal boxes 100 located on both sides of the section in which the abnormality exists is level 2 or less, the collection period setting unit 320 may determine whether it is a solar power generation time period (S12) . The solar power generation time zone may be from 10 am to 5 pm for a sufficient margin.

If it is determined that it is the solar power generation time zone in S12, the data collection cycle of the local terminal box 100 located on both sides of the section in which the abnormality exists may be changed to the fourth cycle (S13). The fourth period may be longer than the third period and shorter than the first period. This is to make the fourth period longer than the third period, so that the local terminal boxes 100 located on both sides of the section in which anomalies exist before the occurrence of anomalies provide time for SoC recovery using solar power generation. In addition, data collection of the local terminal boxes 100 adjacent to both sides of the local terminal boxes 100 located on both sides of the section in which the abnormality exists may be stopped (S13). This is because the local terminal box 100 located on both sides of the section in which the anomaly exists replaces the monitoring responsibility of the local terminal box 100 adjacent to both sides of the local terminal box 100 located on both sides of the section in which the anomaly exists. After S13, it may return to S1.

If it is determined that it is not the solar power generation time zone in S12, it may be determined whether any one of the sensing values provided by the local terminal boxes 100 located on both sides of the section where the abnormal symptom occurs exceeds the second threshold (S14). Here, the second threshold value may be a value greater than the first threshold value in S6 and may be a value smaller than a preset sensing value threshold value serving as a criterion for determining the occurrence of an abnormality.

If it is determined in S14 that there is no sensed value exceeding the second threshold, the collection period setting unit 320 sets the data collection period of the two local terminal boxes 100 located on both sides of the section where the abnormality occurs to change to the fourth period. can be (S16). At this time, unlike S13, the collection period setting unit 320 may change and set the data collection period so that the two local terminal boxes 100 located on both sides of the section in which the abnormal symptom occurs alternate with each other and transmit data every fourth period arrives ( S16). This is to provide a sufficient margin for SoC recovery compared to S13 in a time period when solar power is not generated. After S16, it is possible to return to S1.

In S14, if it is determined that there is a sensed value exceeding the second threshold, the collection period setting unit 320 is proportional to the maximum sensed value among the sensed values provided by the local terminal boxes 100 located on both sides of the section in which the abnormality occurs Thus, it is possible to shorten the data collection period of the local terminal boxes located on both sides of the section where the abnormality occurs (S15). In this case, the collection period setting unit 320 may set the initial value as the first period and shorten the data collection period in proportion to the extent to which the sensed value exceeds the second threshold. In this case, the collection period setting unit 320 may shorten the data collection period in a range in which the minimum data collection period value is the third period. When the second threshold is exceeded, the data collection cycle can be adjusted as shown in S15 in order to monitor the occurrence of an anomaly event by following the anomaly while recovering the SoC to a minimum in consideration of the urgency of the anomaly. After S15, it is possible to return to S1.

Through S1 to S16, the data collection period for each local terminal box may be finally determined.

The processes of FIGS. 4A and 4B may be implemented in a form in which all or part of the process is omitted.

1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7,... , 1-n : sensor
2: water pipe
10-1, 10-2, 10-3, 10-4, 10-5, 10-6, 10-7,... , 10-n : diagnosis point
100-1, 100-2, 100-3, 100-4, 100-5, 100-6, 100-7,... , 100-n : local terminal box
110: sensing value collection unit
120: battery
130: solar power generation unit
140: SoC collection unit
150: data transmission unit
160: communication department
200-1,... , 200-m : gateway
300: central unit
310: data collection unit
320: collection period setting unit
330: abnormal section determination unit
340: communication department

Claims (5)

Collecting, by the data collection unit, SoC (State of Charge) data of a battery that stores the power of the photovoltaic power generation unit and the acoustic sensing value data detected by the acoustic sensor at a data collection cycle for each diagnostic point from all local terminal boxes installed in the jurisdictional section; and
Based on the collected sound sensing value data and SoC data, the collection period setting unit setting a data collection period for each local terminal box within the jurisdictional section,
The data collection unit alternates between the first group local terminal box arranged in odd number and the second group local terminal box arranged in even number based on the starting point of the jurisdiction section at a data collection cycle for each diagnostic point in the entire jurisdictional section to obtain acoustic sensing value data and SoC data A method of operating a water pipe monitoring system, characterized in that it reduces the consumption of electricity produced by the solar power generation unit by requesting and collecting. delete The method of claim 1,
The collection period setting unit determines whether there is a local terminal box with an SoC of level 1 or less,
If there is a local terminal box having an SoC of level 1 or less, the collection period setting unit determines whether there is a section adjacent to a local terminal box having an SoC of level 1 or less,
When it is determined that there are no adjacent sections, the collection period setting unit alone requests a sleep mode switch to a local terminal box having a level 1 SoC. 4. The method of claim 3,
The collection period setting unit alone stops data collection for the local junction box with the SoC level 1 until the first SoC recovery message arrives from the local junction box with the SoC level 1 alone. Way. 4. The method of claim 3,
If it is determined that there are adjacent sections, the collection period setting unit changes and sets the data collection period to the second period only for local terminal boxes with SoC level 1 or lower adjacent to each other,
The initial value of the data collection period for each diagnosis point is the first period,
The second period is a water supply pipe monitoring system operating method, characterized in that longer than the first period.

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