KR101879704B1 - Method and system for diagnosing sewage pipe line using water temperature difference and water level difference - Google Patents

Abstract

The present invention relates to a method for diagnosing whether an inflow water or an effluent is generated in a sewage pipe damaged area by measuring the water temperature and the water level of a front manhole and a rear manhole to determine whether the difference in water temperature between the front manhole and the rear manhole is within a first normal water temperature range When the water level difference between the front end manhole and the rear end manhole deviates from the lower limit of the first normal water level range, it is judged that the inflow water flows through the broken part in the pipeline, The water level difference and the water level difference are determined to be leaked to the outside.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and system for diagnosing a sewage pipe using a water temperature difference and a water level difference,

The present invention relates to a sewage pipe diagnosis method and system using a water temperature difference and a water level difference, and more particularly, to a sewage pipe diagnosis method and system using a water temperature difference and a water level difference diagnosis method for diagnosing whether inflow water or effluent is generated at a sewage pipe failure site without using a flow meter, Diagnostic method and system.

Generally, sewage pipe line is buried in the ground, so even if leakage occurs due to cracks or breakage caused by any factor, it is difficult to confirm even if there is leakage part unless special diagnosis method is used. .

Generally, a sewer pipe made of concrete is likely to cause cracks and breakage due to subsidence of ground, sewage line, aging, and construction of a new pipeline. If there are leakages such as uniformity or breakage in the sewer line, the sewage may escape through the sewer, causing contamination of the soil or groundwater and causing various environmental problems. Therefore, there is a need for a diagnostic method therefor.

In general, a fixed type flow meter is installed in a sewer line and real time data (flow rate, flow rate, water level) is stored in a monitoring system DB by using a wired / wireless communication method. Then, inflow / Infiltration), it is difficult to precisely identify the location of the anomalous pipeline.

Since the distance between the fixed flow meter installed in the sewer pipe is long and the drainage area is wide, it is difficult to precisely locate the abnormal pipe line. Therefore, there is a problem in that a large number of portable meter must be secured for the investigation of the suspicious section.

If a stationary flow meter is installed on a pipe line and a branch pipe through which sewage flows, the fixed flow meter is an expensive meter, which causes a problem of waste of budget due to excessive investment of initial investment and maintenance expenses. In addition, if a stationary or mobile meter used for pipeline irradiation is installed at a certain interval (500 m) and branch point, the input cost is excessive and the maintenance cost rises, resulting in low economical efficiency.

Korean Patent Registration No. 0825979 discloses the use of a flow sensor and a water quality sensor in order to calculate the inflow quantity in the sewage pipe, but this has the above-described problems.

In addition, in Korean Patent Registration No. 1315188, a smoke film containing a coloring dye which reacts with a biofilm existing in a sewer line and causes coloring is injected into a manhole in order to easily grasp a leak point in a sewer line of the inspection subject area, The present invention discloses a technique of allowing coloration due to a coloring reaction at a crack or a leakage portion and allowing confirmation of cracks and leakage portions at the time of repair / reinforcement in the future. However, this has a problem in that it can not be judged in real time whether a sewer line is abnormal.

Therefore, a new method for diagnosing a sewer pipe which does not have the problems of the prior patent is desperately required.

An object of the present invention is to provide a method and system for diagnosing a sewerage line which can accurately detect an abnormal abnormality ducting point in real time by using a water temperature sensor and a water level sensor without using a flow meter.

According to an aspect of the present invention, there is provided a method for diagnosing whether an inflow water or an effluent is generated at a damaged sewage line, comprising: measuring a temperature and a water level of a front manhole and a rear manhole, When the water level difference between the rear end manhole and the front end manhole is out of the lower limit of the first normal water level range, it is judged that the inflow water is introduced from the outside through the broken part in the pipe, And determining that the effluent is discharged to the outside through the damaged portion of the water pipe.

According to an embodiment of the present invention, the electrical conductivity of the front end manhole and the rear end manhole is measured to determine the electrical conductivity of the rear end manhole and the front end manhole when the electrical conductivity of the rear end manhole and the front end manhole deviate from the lower limit of the normal electrical conductivity range. It can be judged that the inflow water flows in from outside.

According to an embodiment, when the water temperature difference between the rear manhole and the front end manhole deviates from the lower limit of the normal water temperature range and the water level difference between the rear manhole and the front manhole is within the second normal water level range or out of the upper limit, And the water level difference between the rear manhole and the front manhole is greater than the water level within the normal water level range, And if the water temperature difference between the rear end manhole and the front end manhole is within the second normal water temperature range, it is judged that the effluent water flows out without inflow of the influent water. As shown in Fig.

The first manhole and the second manhole are compared with each other by comparing the water temperature difference between the first manhole and the second manhole and comparing the water temperature difference between the second manhole and the third manhole with the water level difference, Or whether the inflow water or the effluent of the second sewage pipe between the second manhole and the third manhole is generated.

The present invention also provides a water temperature measuring means for measuring the water temperature of each of the front end manhole and the rear end manhole, a water level measuring means for measuring the water level of the front end manhole and the rear end manhole, And judging that the inflow water flows in from the outside through the damaged portion in the pipeline when the water temperature difference between the rear end manhole and the front end manhole deviates from the lower limit of the normal water temperature range by using the value measured by the front end manhole and the front end manhole, And a determination unit that determines that the effluent flows out to the outside through the broken portion in the pipe if the water level difference of the water level deviates from the lower limit of the normal water level range.

According to one embodiment, the solar power generation system may further include a solar power generation system that generates electric power using solar light to supply the water temperature measurement means and the water level measurement means with driving power.

The sewage pipe diagnosis method and system according to the present invention can judge in real time whether or not a sewer pipe is abnormal by using a low-cost water temperature sensor and a water level sensor without using an expensive flow meter.

In addition, since the manhole can be installed at a maximum distance of 50 m, it is possible to use the existing manhole instead of adding a separate facility to diagnose the abnormality of the sewer line, And it is also possible to easily diagnose the abnormality of the remote meter reading and the sewage line by using wired / wireless communication means installed in the existing manhole.

In addition, the method and system for diagnosing a sewerage line according to the present invention can be applied to a solar module having a small size because a system using a water temperature sensor and a water level sensor can be constructed with low power, not a conventional flow meter.

In addition, the method and system for diagnosing a sewerage line according to the present invention can predict a breakage or a crack site, and can predict an amount of inflow water or infiltration water, and a breakage area.

Accordingly, the method and system for diagnosing a sewerage line according to the present invention can easily and accurately judge whether inflow water flows into a sewer line. Therefore, a method of diagnosing a sewage sludge caused by the formation of a cavity below the ground Can be predicted in advance.

FIG. 1A is a schematic view showing an installation state of a sewerage line diagnostic system according to an embodiment of the present invention. FIG.
FIG. 1B is a schematic view showing an installation state of a sewerage line diagnostic system according to another embodiment of the present invention. FIG.
2 is a configuration diagram of a manhole system according to an embodiment of the present invention.
3 is a block diagram of a sewerage line diagnosis system according to an embodiment of the present invention.
FIG. 4A is a flowchart illustrating a method for diagnosing a sewerage line according to an exemplary embodiment of the present invention.
FIG. 4B is a flowchart illustrating a method of diagnosing a sewerage line according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, the terms "comprises" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

FIG. 1 is a schematic view showing an installation state of a sewerage line diagnostic system according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a manhole system according to an embodiment of the present invention. FIG. Fig. 2 is a configuration diagram of a sewage pipe diagnosis system according to an example.

As shown in FIG. 3, the sewerage line diagnosis system according to an embodiment of the present invention includes a plurality of manhole systems 110 to 140 and a determination unit 200. Here, the manhole systems 110 to 140 may include a water temperature measuring means 112 and a water level measuring means 113 as shown in FIG.

It should be understood that the components shown in FIGS. 2 and 3 are not essential, so that a sewerage line diagnostic system and / or a manhole system having more or fewer components can be implemented.

Hereinafter, each component will be described.

Manhole system

The manhole system 110 may include a water temperature measuring means 112 and a water level measuring means 113, as shown in FIG.

The water temperature measuring means 112 is a means for measuring the temperature of a fluid (for example, sewage) flowing through a sewer pipe or a humidifier pipe, and may be, for example, a water temperature sensor 12, 22, . Here, the water temperature sensors 12, 22, and 32 may be of a contact type or a non-contact type, and may transmit the measured information to the determination unit 200 by wire or wirelessly.

The water level measuring means 113 measures a water level of a fluid (for example, sewage) flowing through a sewage pipe or a humidifier pipe. The water level measuring means 113 measures the water level of the fluid flowing through the water level sensor 11, 21, Lt; / RTI > Here, the water level sensors 11, 21, and 31 may be of a contact type or a non-contact type with respect to a fluid without any particular limitation on a water level measurement method such as a pressure type or an ultrasonic type. As shown in FIG.

Also, according to one embodiment of the present invention, the manhole system 110 may further include an electrical conductivity measuring means 114.

The electric conductivity measuring means 114 is a means for measuring the electric conductivity of a fluid (for example, sewage) flowing through a sewer pipe or a humidifier pipe. For example, the electric conductivity measuring means 114 may be an electric conductivity sensor 13, have. Here, the electric conductivity sensors 13, 23, and 33 may be contact-type or induction-type, and may transmit the measured information to the determination unit 200 by wire or wirelessly.

The water temperature measuring means 112, the water level measuring means 113 and the electric conductivity measuring means 114 can be publicly known ones, and a detailed description thereof will be omitted.

The water temperature measuring means 112, the water level measuring means 113 and the electric conductivity measuring means 114 of the manhole system 110 according to an embodiment of the present invention are fixedly or movably installed in the manhole, It is preferable to install it on the front and rear manholes of the pipe to be judged.

Generally, since the manholes are installed at a maximum of 50 meters, if the water temperature measuring means 112 and the water level measuring means 113 are provided for adjacent manholes, it is possible to use a conventional fixed type and / It is possible to grasp the abnormality occurrence point of the pipeline relatively accurately.

Here, the abnormality judged by the judging unit 200 may indicate a pipe breakage, an inflow water generation, an inflow water generation, and the like.

A specific process for determining whether the determination unit 200 is abnormal will be described later.

The manhole systems 110 to 140 according to an embodiment of the present invention may further include a control unit 111 and a communication unit 115.

The communication unit 115 is for communicating with various networks. The communication unit 115 can transmit and receive data to and from various types of terminals or servers through at least one network. In accordance with an embodiment of the present invention, The water level measuring means 112, the water level measuring means 113 and / or the electric conductivity measuring means 114 of the controller 140 can be transmitted to the judging unit 200 by wire and / or wirelessly.

The control unit 111 is a means for controlling the operation of each component included in the manhole systems 110 to 140, and can perform various operations or process various information. Specifically, the water temperature measuring means 112, the water level measuring means 113, the electric conductivity measuring means 114 and / or the communication means 115 are controlled to control the water temperature measuring means 112, And / or the information measured from the electrical conductivity measuring means 114 to the judging unit 200 by using the communication means 115.

Meanwhile, the manhole systems 110 to 140 according to an embodiment of the present invention may further include power supply means for supplying electric power to be driven by the respective components included in the manhole systems 110 to 140 .

The method and system for diagnosing a sewerage line according to an embodiment of the present invention may include a water level sensor 11, 21, 31 and a water temperature sensor 12, 22, 32, Since the electric conductivity sensors 13, 23 and 33 are used according to the present invention, they can be configured with low power.

Thus, the power supply means of manhole systems 110-140 may be a solar power generation system 116 that produces power using batteries or solar light.

The solar cell module 116 may include a plurality of solar cell modules for converting sunlight into electricity and a power storage device for storing electric power, May be formed on at least a portion of the exposed portion of the manhole cover.

FIG. 1B is a schematic view showing an installation state of a sewerage line diagnostic system according to another embodiment of the present invention. FIG.

The sewage pipe diagnosis system or the manhole systems 110 to 140 according to the present invention can be fixedly implemented, but can be implemented as a mobile type as shown in FIG. 1B. A sensor package 14, 24, 34, including a water level sensor and a water temperature sensor and, in accordance with an embodiment, an electrical conductivity sensor, and at least one sensor 14, 24, A communication module 15 for transmitting and receiving data when the wireless communication is performed between the communication module 15, 25 and 35 and the information collector 210; And antennas 16, 26, and 36, respectively.

The information collector 210 is a means for receiving and storing information measured by the sensor packages 14, 24, and 34 installed in each of the plurality of manholes, and the information collector 210 is a mobile terminal type (e.g., Mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), slate PCs, tablet PCs, The communication between the information collector 210 and the communication modules 15, 25 and 35 is preferably performed by a mobile communication system (for example, GSM (Global System for Mobile communication), CDMA Access, Code Division Multiple Access (CDMA2000), Enhanced Voice-Data Optimized or Enhanced Voice-Only (EV-DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), etc.) (WLAN), WiFi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet (Bluetooth), Radio Frequency Identification (RFID), Infrared Data Association (RFID), and the like. IrDA), Ultra Wide Band (UWB), ZigBee, Near Field Communication (NFC), etc.).

The information collector 210 may further include a determination unit 200 to be described later, and the information collector 210 may determine whether an abnormality has occurred in the sewage pipe.

In the case of the portable sewerage pipe diagnosis system, it is possible to configure the system with a low power. Therefore, a battery (solar power generation system is also possible as a means for supplying power to the sensor packages 14, 24, and 34 and the communication modules 15, ).

Sewer line diagnostic system

As shown in FIG. 3, the sewerage line diagnostic system may include manhole systems 110 to 140 and a determination unit 200.

The determining unit 200 is a means for processing or monitoring various types of information received from the manhole systems 110 to 140 by wire or wireless. The determining unit 200 may be a mobile phone, a smart phone, a laptop computer a mobile terminal such as a personal computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a slate PC, a tablet PC, an ultrabook, A fixed terminal such as a desktop computer, or the like.

Although the mounting position of the determining unit 200 is not particularly limited, it may be installed outside the manhole housing for smoothly transmitting and receiving various data to and from the plurality of the manhole systems 110 to 140. However, the manhole systems 110 to 140 and the wired When data is transmitted or received, it may be installed inside the manhole housing.

The judging unit 200 can judge the inflow of influent water and the outflow of effluent water by using the values measured by the water temperature measuring means 112 and the water level measuring means 113 at the front end manhole and the rear end manhole respectively.

When the water temperature difference between the rear end manhole and the front end manhole deviates from the lower limit of the first normal water temperature range, the determination unit 200 determines that the inflow water is inflow It can be judged that the inflow water is flowing in. Here, the first normal water temperature range is not limited to a value that can be set by the operator or the like, but may be, for example, -5 to 5 ° C.

The sewage water flowing through the estuarine channel is somewhat different depending on the region or season, but generally maintains the homeostasis at about 20 to 25 ° C. Therefore, if the inflow water flows from the outside, its homogeneity is not maintained, and if it is used, it can be judged whether inflow water flows into the sewer line.

1A and 1B, the sewage temperature T1 measured by the water temperature sensor 12 of the first manhole 10 is 25 DEG C and the water temperature sensor 22 of the second manhole 20 When the sewage temperature T2 measured by the water temperature sensor 32 of the third manhole 30 is 21 deg. C, the judging unit 200 judges that T2 T1 of the first sewer line 40 installed between the first manhole 10 and the second manhole 20 because the temperature difference is below the lower limit of the first normal water temperature range The second manhole 20 and the third manhole 30 are provided with the second sewage pipe 50, which is installed between the second manhole 20 and the third manhole 30, because T3 is different from the water temperature by T2 but is within the first normal water temperature range. ), It can be determined that there is no inflow of influent water.

Here, it is assumed that the flow of sewage shown in FIG. 1 is formed from the first manhole 10 to the third manhole 30 via the second manhole 20.

According to one embodiment of the present invention, when the determination unit 200 determines the inflow of influent water, if the difference between the electric conductivity of the rear end manhole and the electric conductivity of the front end manhole deviates from the lower limit of the normal electric conductivity range, It can be judged that the inflow water is introduced through the site. The normal electrical conductivity range is not limited to a value that can be set by the operator, but may be, for example, 100 to 500 S / cm.

If the electrical conductivity of the sewage is about 200 μS / cm or more, and the electrical conductivity of the constant is 30 to 50 μS / cm, the influent water from the inflection point of the electrical conductivity to the sewage pipe It can be judged that it is flowing.

Specifically, as shown in Fig. 1A or 1B, the electric conductivity (1) of the sewage measured by the electric conductivity sensor 13 of the first manhole 10 is 400 mu S / cm, The electrical conductivity of the sewage measured by the electrical conductivity sensor 23 is 130 mu S / cm and the electrical conductivity of the sewage measured by the electrical conductivity sensor 33 of the third manhole 30 is 130 mu S / cm, the judging unit 200 judges whether the first manhole 10 and the second manhole 20 are in contact with each other because? 2 is lower than? 1 and the electrical conductivity difference thereof is out of the lower limit of the normal electrical conductivity range (100 μS / cm) It is possible to judge that there is influx of water from the breakage area 41 of the installed first sewage line 40. Since? 3 is within the normal electric conductivity range between? 2 and the electric conductivity, the second manhole 20 and the third It can be determined that there is no inflow of the inflow water into the second sewage pipe line 50 installed between the manholes 30.

In this way, it is possible to judge whether the inflow water flows into the sewage pipe based on the difference in water temperature. In addition, if it is judged based on the difference of the electric conductivity, whether inflow water flows into the sewer pipe, Can be determined.

According to an embodiment of the present invention, it is possible to easily and accurately determine whether inflow water in the sewer pipe is inflowed. Therefore, it is possible to predict whether or not a sinkhole generated by the formation of a cavity below the ground due to pipeline rupture or the like .

If the water level difference between the rear end manhole and the front end manhole is out of the lower limit of the first normal water level range, the judging unit 200 judges the outflow of the effluent water through the damaged portion in the pipeline It can be judged that the effluent is discharged to the outside. Here, the first normal water level range is not specified as a predetermined value but may be -5 to 3 cm, for example.

Because the estuarine channel is closed and the water level is not lowered because the sewage does not flow out, it is possible to judge whether or not the sewage effluent is leaked. For example, if the water level is lowered to less than 10 cm, assuming that the water level of 15 cm is maintained in the 300 mm humvee pipe, it can be judged that the effluent is flowing out from the sewage pipe at the inflection point of the water level.

Specifically, as shown in FIG. 1A or 1B, the sewage water level L1 measured by the water level sensor 11 of the first manhole 10 is 15 cm, and the water level sensor 21 of the second manhole 20, When the sewage water level L2 measured by the first manhole 30 is 9 cm and the sewage water level L3 measured by the water level sensor 31 of the third manhole 30 is 9 cm, It can be determined that the effluent does not flow out to the first sewer line 40 provided between the first manhole 10 and the second manhole 20 and the judging unit 200 judges that L3 is lower than L2, The outflow of effluent water from the cracked portion 51 of the second sewer line 50 installed between the second manhole 20 and the third manhole 30 because the water level difference is out of the lower limit of the first normal water level range (-5 cm) Can be determined.

The difference between the water temperature T2-T1 of the second manhole 20 and the first manhole 10 is compared with the difference L2-L1 between the first manhole 10 and the second manhole 20 ) Of the first sewage pipe (40) between the first sewage pipe (40) and the second sewage pipe (40). The difference between the water temperature difference T3-T2 between the third manhole 30 and the second manhole 20 is compared with the difference L3-L2 between the second manhole 20 and the third manhole 30, It is possible to judge whether the inflow water or the effluent of the second sewage line 50 of the sewage treatment plant 50 is generated.

Meanwhile, according to another embodiment of the present invention, the determination unit 200 may determine whether the inflow water is influenced based on the temperature difference (or electric conductivity difference) between the front manhole and the rear manhole , It is also possible to judge whether or not the effluent is leaked based on the difference in water level between the shear manhole and the rear manhole.

When the water temperature difference measured in the rear end manhole and the front end manhole deviates from the lower limit of the first normal water temperature range and the water level difference between the rear end manhole and the front end manhole is within the second normal water level range or the upper limit of the second normal water level range It can be judged that there is only inflow of inflow water without flowing out of the effluent. That is, if the water level in the sewer line is drastically lowered, it can be judged that the effluent of the sewage pipe is flowing out at the inflection point of the water level, but otherwise, it can be judged that there is only inflow of inflow water without the effluent leakage.

Here, the second normal water level range may be the same as the first normal water level range, but may have a different range.

The determination unit 200 determines whether the effluent is discharged or not based on the difference in the water level between the front manhole and the rear manhole as described above. Specifically, based on the difference in water temperature between the front manhole and the rear manhole It is also possible to judge whether the inflow water is inflowed or not.

If the water level difference measured at the rear end manhole and the front end manhole deviates from the lower limit of the first normal water level range and the water temperature difference between the rear end manhole and the front end manhole is within the second normal water temperature range, . That is, if the water temperature of the sewer line is drastically lowered, it can be judged that the inflow water of the sewer line is flowing from the inflection point of the water temperature. Otherwise, if it is within the second normal water temperature range, It is because.

If the water temperature difference measured at the rear end manhole and the front end manhole deviates from the lower limit of the first normal water temperature range and the water level difference measured at the rear end manhole and the front end manhole deviates from the lower limit, It can be concluded that the outflow of the effluent is simultaneously carried out.

Accordingly, if the determination unit 200 determines that the inflow of the inflow water and the inflow of the inflow water are concurrently performed, it can be expected that the breakage portion of the inflow can be spread over the first half including the upper portion and the lower portion, It can be expected that the damaged part of the pipeline is located at the lower part based on the water level measured at the shear manhole. If it is judged that only inflow water is inflowed without flowing out the effluent water, the damaged part of the pipeline is the water level measured at the shear manhole It can be expected that it is in the upper part of the standard.

According to another embodiment of the present invention, when the determination unit 200 determines that there is only the effluent of the effluent without inflow of influent water, the pre-stored stage-discharge curve (the level Q = a + bh + ch ₂ , where h is the water level, and a, b, and c can be specified differently depending on the sewage), the flow rate of the shear manhole and the flow rate of the downstream manhole are calculated, The amount of the effluent discharged from the manhole can be calculated. Further, the judging unit 200 can calculate the damaged area of the sewage pipe using the pre-stored look-up table based on the calculated amount of the effluent. Here, the look-up table can calculate the damaged area of the sewer pipe corresponding to the amount of effluent (or the amount of effluent discharged per unit time).

When it is determined that there is only inflow of the influent water without flowing out of the effluent water, the determining unit 200 calculates the flow rate of the front end manhole and the flow rate of the rear end manhole using the pre-stored water level flow curve, And the inflow water flowing between the rear end manhole can be calculated. Further, the judging unit 200 can calculate the damaged area of the sewage pipe using the pre-stored look-up table based on the calculated amount of the influent water. Here, the look-up table can calculate the damaged area of the sewer pipe corresponding to the amount of inflow water (or the amount of inflow water flowing per unit time).

Sewer pipe diagnosis method

FIG. 4A is a flowchart of a method of diagnosing a sewerage line according to an embodiment of the present invention, and FIG. 4B is a flowchart of a method of diagnosing a sewerage line according to another embodiment of the present invention.

Hereinafter, each configuration will be described in detail with reference to FIG. 1 to FIG. 3, but the parts overlapping with the preceding description will be replaced with the detailed description.

4A, the first manhole system 110 measures the water temperature T1 and the water level L1 of the front-end manhole at step S110, The manhole system 120 measures the water temperature T2 and the water level L2 of the rear end manhole (S120). Using the information, the determining unit 200 determines whether the water temperature difference between the rear manhole and the front end manhole deviates from the lower limit of the first normal water temperature range (S130). If the difference exceeds the lower limit of the first normal water temperature range It can be determined that inflow water flows in from the outside through the damaged portion of the sewer pipe (S132).

According to an embodiment of the present invention, when the determination unit 200 determines whether the inflow water is introduced, the difference between the electrical conductivity of the rear manhole (? 2) and the electrical conductivity of the front manhole (? 1) If it is determined that the lower limit is exceeded, it is determined that the inflow water flows in through the damaged portion in the pipeline (S131), so that the accuracy of the inflow water inflow determination can be improved.

If the water level difference between the rear end manhole and the front end manhole is out of the lower limit of the first normal water level range (S141), if the water level is out of the lower limit of the first normal water level range, (S142). ≪ / RTI >

4B, when a determination is made as to whether inflow water has flowed into the sewer line, the determination unit 200 determines whether the water temperature difference measured at the rear manhole and the front manhole is equal to or greater than the first normal (S130), it is determined whether the water level difference between the rear end manhole and the front end manhole is within the second normal water level range or out of the upper limit of the second normal water level range (S133). If the second normal water level If it is within the range or the upper limit of the normal water level range is exceeded, it can be determined that there is inflow of only the inflow water without flowing out of the effluent (S134).

According to one embodiment of the present invention, when the determination unit 200 determines whether the inflow water is introduced, the difference between the electric conductivity of the rear manhole (? 2) and the electric conductivity of the front manhole (? 1) If it is judged that the inflow water flows through the damaged portion in the pipeline (S131) if the lower limit of the electric conductivity range is exceeded, it is possible to increase the accuracy of the inflow water inflow judgment.

Here, the second normal water level range may be the same as the first normal water level range, but may have a different range.

The determination unit 200 determines whether the water level difference measured at the rear end manhole and the front end manhole deviates from the lower limit of the first normal water level range and whether the water temperature difference between the rear end manhole and the front end manhole (S143). If so, it can be determined that there is only an outflow of the effluent without inflow of inflow water (S144).

If the water temperature difference measured at the rear end manhole and the front end manhole deviates from the lower limit of the first normal water temperature range and the water level difference measured at the rear end manhole and the front end manhole deviates from the lower limit, It can be concluded that the outflow of the effluent is simultaneously carried out.

Accordingly, if the determination unit 200 determines that the inflow of the inflow water and the inflow of the inflow water are concurrently performed, it can be expected that the breakage portion of the inflow can be spread over the first half including the upper portion and the lower portion, It can be expected that the damaged part of the pipeline is located at the lower part based on the water level measured at the shear manhole. If it is judged that only inflow water is inflowed without flowing out the effluent water, the damaged part of the pipeline is the water level measured at the shear manhole It can be expected that it is in the upper part of the standard.

Computer readable recording medium

The sewage pipe diagnostic method according to an embodiment of the present invention described above can be implemented in the form of program instructions that can be executed through various computer components and recorded on a computer readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer-readable recording medium may be those specially designed and configured for the present invention or may be those known and used by those skilled in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape; optical recording media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; optical media), and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules for performing the processing according to the present invention, and vice versa.

The preferred embodiments of the present invention have been described in detail with reference to the drawings. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are included in the scope of the present invention Should be interpreted.

10: first manhole 20: second manhole
30: third manhole 11, 21, 31: water level sensor
12, 22, 32: water temperature sensor 13, 23, 33: electric conductivity sensor
14, 24, 34: sensor package 15, 25, 35: communication module
16, 26, 36: antenna 40: first sewer pipe
41: broken part 50: second sewer pipe
51: crack region 110, 120, 130, 140: manhole system
111: control unit 112: water temperature measuring means
113: water level measuring means 114: electric conductivity measuring means
115: Communication means 116: Solar power generation system
200: determination unit 210: information collector

Claims (5)

A method for diagnosing whether an inflow water or an effluent is generated at a sewage line breakage site,
The water temperature and the water level of the front end manhole and the rear end manhole of the sewage pipe are measured and when the water temperature difference between the rear end manhole and the front end manhole deviates from the lower limit of the first normal water temperature range, inflow water flows in from outside through the broken part in the sewage pipe When the difference between the water level of the rear end manhole and the front end manhole is out of the lower limit of the first normal water level range, it is determined that the effluent water flows out to the outside through the damaged part in the sewer pipe,
If the water temperature difference between the rear end manhole and the front end manhole deviates from the lower limit of the normal water temperature range and the water level difference between the rear end manhole and the front end manhole is within the second normal water level range or is out of the upper limit, And judges that the damaged portion of the sewer pipe is in the upper part based on the water level measured at the shear manhole,
If the water level difference between the rear end manhole and the front end manhole deviates from the lower limit of the normal water level range and the water temperature difference between the rear end manhole and the front end manhole is within the second normal water temperature range, And determines that the damaged portion of the sewer line is located at a lower level based on the water level measured at the shear manhole,
The amount of the inflow water or the effluent is calculated based on the difference between the flow rate calculated at the rear end manhole and the flow rate calculated at the shear manhole, and the amount of the inflow water or the effluent is calculated based on the calculated amount of the inflow water or the effluent, And a water level difference between the water level difference and the water level difference. The method according to claim 1,
The electrical conductivity of the front end manhole and the rear end manhole is measured to measure the electrical conductivity of the rear end manhole and the rear end manhole to measure the electrical conductivity of the rear end manhole and the rear end manhole when the difference in electrical conductivity between the rear end manhole and the front end manhole deviates from the lower limit of the normal electrical conductivity range, The water level difference and the water level difference. delete 3. The method according to claim 1 or 2,
Comparing the water temperature difference between the first manhole and the second manhole with the water level difference and comparing the water temperature difference between the second manhole and the third manhole with the water level difference,
Whether or not influent water or effluent water is generated in the first sewage pipe line between the first manhole and the second manhole or in the second sewage pipe between the second manhole and the third manhole is determined Diagnostic method of sewage pipe used. A water temperature measuring means for measuring a temperature of each of a front manhole and a rear manhole of a sewer line;
A level measuring means for measuring a level of each of the front end manhole and the rear end manhole; And
When the water temperature difference between the rear end manhole and the front end manhole deviates from the lower limit of the normal water temperature range by using the values measured by the water temperature measuring means and the water level measuring means, influent water flows in from the outside through the damaged portion in the sewage pipe If the difference between the water level of the rear end manhole and the front end manhole deviates from the lower limit of the normal water level range, it is determined that the effluent water flows out to the outside through the broken part in the sewer pipe,
If the water level difference between the rear end manhole and the front end manhole deviates from the lower limit of the normal water level range and the water temperature difference between the rear end manhole and the front end manhole is within the second normal water temperature range, And determines that the damaged portion of the sewer line is located at a lower level based on the water level measured at the shear manhole,
The amount of the inflow water or the effluent is calculated based on the difference between the flow rate calculated at the rear end manhole and the flow rate calculated at the shear manhole, and the amount of the inflow water or the effluent is calculated based on the calculated amount of the inflow water or the effluent, A determining unit for calculating;
And a water level diagnosis system using a water temperature difference and a water level difference.

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