KR101819496B1

KR101819496B1 - Sludge height measuring apparatus of sewer pipe with floating body and monitoring system using the same

Info

Publication number: KR101819496B1
Application number: KR1020150128333A
Authority: KR
Inventors: 김한성
Original assignee: 김한성
Priority date: 2015-09-10
Filing date: 2015-09-10
Publication date: 2018-01-17
Also published as: KR20170030873A

Abstract

The present invention relates to a sediment sensor of a sewage pipe having a float capable of accurately measuring sediment accumulated in a sewer pipe in real time and also capable of flexibly responding to a varying head of sewage, And a measuring unit 230 for measuring the distance between the float 220 raised and lowered along the guide unit and the sediment deposited on the bottom of the sewage pipe coupled to the float, A sediment sensor of a sewage pipe is provided for measuring the level of sewage through a position relative to a guide and calculating the height of the sediment through a distance to the sediment.

Description

TECHNICAL FIELD [0001] The present invention relates to a sediment sensor of a sewage pipe having a float and a monitoring system of sediment using the sediment sensor.

More particularly, the present invention relates to a sediment sensor of a sewage pipe having a float capable of accurately measuring sediments accumulated in a sewer pipe in real time and also capable of flexibly responding to a changing head of sewage .

In recent years, urban flood damage has been continuing due to frequent rainfall caused by rainy weather and localized rainfall. Especially, due to changes in rainfall patterns due to climate change, the frequency of rainfall itself is decreasing, but the intensity of rainfall is increasing, and the flood damage tends to be intensified.

In the past, if flood damage from external sources such as river floods or bank collapses was the main cause, domestic flood damage has increased recently. It is understood that the damage caused by inundation mainly occurs when the allowable flow rate of the sewage can be exceeded or exceeded the exclusion capacity of the pumping station.

The reason for the increase in domestic flooding damage is that the development of urbanization has increased the number of impervious floors, and the flooding of the surface has been increased due to the infiltration of rainwater through the road. In the case of Seoul, the impervious rate in the 1960s was 7.8%, but in the 2000s it increased by more than 40% to 47%, and the surface runoff increased by more than 500%. It is now known that this imbalance rate is further increased. For this reason, even in the case of the same rainfall, inundation damage has occurred recently in the condition that the flooding does not occur.

The damage caused by internal water flooding is mainly caused by the reverse flow of the sewer pipe, and it is known that the increase of the sediment in the sewer pipe is the main cause except the cause of lack of drainage capacity.

However, as far as water quality management and improvement policy of the public waters have been concerned, we have focused mainly on the expansion of the sewerage infrastructure, and we did not pay much attention to the monitoring of sediment.

In recent years, there have been attempts to monitor and respond to environmental conditions by monitoring the sewerage comprehensively. However, the system has been installed and operated only in a specific area so as to measure only the flow rate in the pipeline using the flow rate and water level measurement system.

These influent flow and velocity measurements are fundamentally not a fundamental solution to domestic flood damage and are merely a function of monitoring and collecting data that can be taken afterwards.

According to the Ministry of Environment 's Guidelines for Operation and Management of Public Sewerage Facilities (revised on February 23, 2014),' Cleaning and dredging of sewer pipes should be carried out at least once a year. However, Or whether to conduct periodic cleaning. However, regular intervals and annual dredging plans should be established for areas designated as concentrated rainfalls centered management area and completed before the rainy season. "

Actually, to cope with preliminary and active response to the sediment of the sewer, it is required to install the equipment that can monitor the condition of the sediment in the vessel in real time but accurately measure it. However, in reality, there is no equipment that can accurately and efficiently monitor the sewage system with variable flow rate and flow rate.

Registration Utility Model No. 20-0262125 discloses a prior art sludge vertical sludge water column, and Fig. 1 is a perspective view thereof.

The sludge vertical sludge water system consists of a main body 1 and an opening and closing means 2. Upper and lower portions of the main body 1 are opened so that wastewater or sludge can be received into the main body without resistance of air And a transparent circular tube which can be seen through the inside so that the pollution degree of the sewage can be visually confirmed.

The scale (2) is displayed on the outer periphery of the main body to measure the depth of the sludge according to the depth of water, and turbidity, chroma, brightness, BOD, COD and the like can be measured.

However, the method of measuring these sediments is one-time and inconvenient for human to collect them directly, and it is difficult to apply to the measurement of sediments in each part of the sewer pipe which is buried in the ground.

In particular, it is practically impossible to accurately grasp the relative relationship between the flow rate and the sediment in the sewer pipe whose flow rate is continuously changed in the conventional method.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a sewage treatment facility that can be installed easily at each location of a sewer pipe and accurately measure and monitor sewage flow rate and sediment deposit in real time, The present invention also provides a monitoring system for a sediment using the sediment sensor.

The present invention is characterized in that a distance between a float (220) raised and lowered along the guide portion and a sediment deposited on the bottom of the sewer pipe (210) installed on the inner circumferential side of the sewage pipe is measured through sound The sediment sensor of the sewage pipe includes a measuring unit 230 for measuring the level of the sewage water through the position of the guide unit of the float and calculating the height of the sediment through a distance from the sediment. Therefore, it is possible to optimize the characteristics of the sewage and to measure the precise sediment.

The measurement section may be arranged to be an acoustic echo sounder and to direct the bottom of the sewer pipe in the vertical direction at the bottom of the float. Therefore, the influence of irregular flow or foreign matter on the sewage surface or the water head side is minimized, thereby maximizing the accuracy.

In addition, the guide unit may include a plurality of sensing units 211 arranged in the height direction, and the float may include a magnet 232 capable of interrupting a contact point of the sensing units. Therefore, it is easy to measure the water level through the float.

The sensing portions may be arranged to be inclined from the inner circumferential side of the guide portion.

In one embodiment, the float may include a body part 221 for coupling the measurement part to the front bottom part, a frame part 222 for positioning the front part of the body part in a water flow direction, And a guide hole 231 inserted into the guide hole 231.

[0030] The present invention provides a sediment sensor of a sewage pipe according to any one of claims 1 to 5, a port unit 240 provided in each sediment sensor, a signal processing unit connected to the port unit, And a server unit (300) for receiving the control and communication unit (500) and the respective sludge sensor measurement information to monitor the status of the sludge to each part of the sewer pipe in real time.

The server unit includes a sediment monitoring unit 310 for receiving the measurement information, a determination unit 320 for calculating the ratio of the cross-sectional area of the sediment from the measurement information, and a display unit for generating an alarm when the amount or the ratio of the sediment exceeds the reference value. An alarm unit 330 may be provided.

Since the sediment sensor of the sewage pipe having the float of the present invention is capable of accurately measuring the amount of sediment in each part disposed in a predetermined area and can be measured in real time without the placement of each attraction point, There is a monitoring effect.

In addition, by measuring the water level physically by float and measuring the relative distance between the sediment and float by acoustic method, it is possible to apply accurate measurement method to the sewer pipe, and thus to detect the exact sediment amount.

Meanwhile, when a sediment sensor is installed at each site according to the sediment monitoring system of the present invention, and measurement information is collected and managed through a predetermined network, information on a sewer pipe is provided to a relevant area, It is possible to prevent flooding damage from various causes such as overflow.

In addition, since the sediment monitoring system of the present invention is configured as a control network, it is possible to perform comprehensive mapping on a predetermined area range, to detect problems in real time, to identify areas where dredging is requested, It is possible to contribute to the improvement of the economical efficiency.

1 is a perspective view of a prior art sludge vertical sludge water system.
2 is a schematic view of a sediment sensor of a sewer pipe having a float according to the concept of the present invention.
3 is a view for explaining a sediment sensor of a sewer pipe having a float according to an embodiment of the present invention.
Figure 4 is a side view of Figure 3;
5 is a side cross-sectional view for explaining a preferred embodiment of float in the precipitate sensor of the present invention.
6 is a view for explaining a guide part in the precipitate sensor of the present invention.
7 is a block diagram of the monitoring system of the precipitate of the present invention.
FIG. 8 is a diagram for explaining the server unit of FIG. 7. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a precipitate sensor of a sewer pipe having a float according to a preferred embodiment of the present invention and a system for monitoring sediment using the same will be described in detail with reference to the accompanying drawings.

The embodiments described below are merely intended to explain the invention in a manner that allows a person skilled in the art to easily carry out the invention, and thus the scope of protection of the present invention is limited Do not.

Throughout the specification and claims, when a section includes a constituent, it is intended that the inclusion of the other constituent (s) does not exclude other elements unless specifically stated otherwise.

The present invention basically comprises a guide portion provided on the inner circumferential side of a sewer pipe, a float raised and lowered along the guide portion by the water level of the sewage, and a relative distance between the sediment deposited on the bottom of the sewer pipe and the float, And a measurement unit for measuring the throughput.

In the examples shown in the drawings, a sewage pipe having a substantially circular cross section and a uniform shape in the longitudinal direction is described. The shape of the sewage pipe and the ratio of the sewage pipe to the sediment sensor can be variously selected, and sewage or sediment Is not limited to these.

2 is a schematic view of a sediment sensor of a sewer pipe having a float according to the concept of the present invention.

Sewage water 102 having a predetermined water level flows through the sewage pipe 101 and floors or foreign substances contained in the sewage are deposited to form a layer of the sediment 103 as time passes.

In the concept of the present invention, the water level of the sewage 102 is measured as the height of the ascending and descending steel against the guide portion 210 of the float 220, and the settlement amount or height of the sediment 103 is measured using a noncontact type acoustic measurement method.

A case where non-contact type sound or light is used for a predetermined fixed sewage pipe 101 in measuring the water level of the sewage water 102 may be considered. This noncontact water level measurement method is highly inaccurate because it is influenced by various factors such as bubble, scum, vortex or temperature. Accordingly, the present invention proposes a concept of accurately measuring the water level with respect to the center point of buoyancy by applying a physical up-down method, more precisely using buoyancy, to the water level.

According to the present invention, the float 220 is disposed on the guide part 210 in accordance with the water level of the sewage 102. For example, The measurement unit 230 may be coupled to the float 220 to ascend and descend together for accurate measurement of the relative height.

According to the configuration of the present invention, the measuring unit 230 is disposed in the water rather than exposed to the atmosphere, and is preferably configured as an echo sounder. In the conventional method of measuring the water level, a method using an input and a reflected time difference in the atmosphere using an ultrasonic wave is applied, but in the sewage field as in the present invention, the method of measuring the sleeping in the air is inaccurate due to various factors Is as described above. Therefore, applying the measuring unit 230 of the present invention using the property reflected by a predetermined path by launching SONAR in water dramatically improves accuracy in measuring the relative height to the sediment 103 It should be noted that

Specifically, the measuring unit 230 can be coupled to the bottom of the vertical sewage pipe 101 from below the float 220, and the tail unit can be disposed so as to be oriented with respect to the flow of the sewage water But it is not always limited to this.

If the measurement unit 230 is an acoustic echo sounder, the ultrasonic wave is emitted to the vertical bottom of the sewer pipe, and then the time from the reflection of the surface of the precipitate 103 until returning is measured. Multiplying the speed allows the measurement of the relative height from the water level of the sewage 102 to the sediment. However, in some cases, the direction in which the measuring unit 230 is directed may be formed to have a predetermined inclination angle in the sewer pipe.

Generally, the speed of ultrasonic waves in water is known to be about 1500 m / s. Here, the frequency of the ultrasonic waves can be variously set according to the type of the sewer pipe and the environment, and the width of the selection is relatively wide because a relatively high frequency band can be used as compared with the case of the deep sea type. However, in case of sewage, unlike constants, it is preferable that low frequency within 200 kHz, which is excellent in penetration, is used because of high turbidity due to foreign matter, but it is not limited thereto.

The guide 210 functions to guide the float 220 to move only in the radial direction, that is, in the vertical direction with respect to the sewage pipe 101, and detects the height of the float 220 It is possible to arrange a predetermined height measuring means capable of measuring the height.

The guide part 210 may be disposed in a predetermined coupling hole formed on the upper side of the sewage pipe 101 so that the signal line can be drawn out from the sewage pipe 101 having a substantially closed configuration. A variety of known fastening structures can be applied for fixing the upper and lower ends of the frame.

The guide part 210 may have a cylindrical shape and may be made of a material having excellent corrosion resistance. Further, since the float 220 repeatedly slides on the outer circumferential surface, it is more preferable that the float 220 is subjected to surface treatment so as to prevent adsorption or adhesion of foreign matter.

The concept of detecting the height of the sediment 103 by the float 220 and the measuring unit 230 will be described.

The height of the sediment can be summarized by the following formula.

That is, the height h of the precipitate can be set to a value obtained by subtracting the relative height Dw from the measurement position (l) to the float 220, or more precisely, the surface of the precipitate measured by the measurement unit 230 . The measurement position l means the height of the measurement unit 230 coupled to the float 220 from the bottom of the sewer pipe 220. The measurement position is measured by the position of the float 220 with respect to the guide unit 210 . Further, the reference symbol D denotes the diameter of the sewer pipe.

Here, when the flow rate of the sewage is present, the height of the sediment can be calculated in the same manner as above. In the case where there is no flow rate of the sewage, the height h of the sediment can be directly measured. In this case, the float 220 may be provided with additional sensing means for sensing contact with the precipitate 103.

When the height of the sediment is determined, the ratio of the cross-sectional area of the sediment to the cross-sectional area of the sewage pipe 101 can be defined. If the ratio of the sediment cross-sectional area calculated above is greater than the reference value, By making it possible to confirm this, it is possible to perform dredging work for the relevant site.

A system for calculating the ratio of the cross-sectional area of the precipitate to the height of the precipitate thus detected and thereby alerting or notifying the predetermined point will be described later.

The ratio of the cross-sectional area of the precipitate can be summarized by the following equation.

This ratio of the cross-sectional area of the sediment can be applied to the sewage pipe 101 having a circular and uniform diameter D, and in the case of the other types of sewage pipes 101, it can be appropriately calculated by changing only the algorithm of the predetermined control section. The height of the precipitate is uniformly deposited in a substantially horizontal state as shown in Fig. 4, but the degree of the uneven surface state to some extent is determined by determining whether the dredging is necessary for a reference value to which precipitation has been made It is important and negligible.

However, it may be considered that a multi-beam acoustic echo can be formed in the float 220 to measure the sediment form of the sediment.

On the other hand, the processing capacity of the basic wastewater was ordinarily determined by a water level ratio, which can be defined as a water level with respect to the diameter D of the sewage pipe 101, that is, a measurement position (l). According to the concept of the present invention, since the float 220 measures the level of the sewage, this level ratio can also be accurately detected.

On the other hand, when the turbidity of sewage changes, it may be necessary to adjust the detection method in detecting a predetermined sounding value. For this purpose, the above-mentioned frequency may be changed or post-correction may be required for the sound center value, and the controller as described below may function to enable active sensing by reflecting various factors such as turbidity and viscosity .

Accordingly, in the present invention, the float 220 may further include a turbidimeter (not shown).

FIG. 3 is a view for explaining a sediment sensor of a sewer pipe having a float according to an embodiment of the present invention, and FIG. 4 is a side view thereof.

The guide part 210 is arranged in the diameter direction of the sewage pipe 101 and the float 220 is lifted and lowered along the guide part 210 along the water level and the sediment 103 and float The measurement of the relative height of the light source 220 is performed as described above, and a duplicate description will be omitted.

In the case of the sewage 102, the float 220 proceeds from one side to the other with a predetermined flow rate and flow rate, and functions to measure the water level while floating on the water surface side of the sewage 102. Accordingly, it is preferable that the float 220 as a whole has a specific gravity smaller than that of water at least as a whole and is directed to the direction of water flow.

In one embodiment, as illustrated, the float 220 is entirely of a streamlined body and has a wedge at the rear end to maintain constant constant orientation relative to flow. A detailed description thereof will be given later.

In this case, it is more preferable that the measuring unit 230 is disposed on the front side of the body 221 as shown in FIG. Therefore, the measuring unit 230 can always have a constant directionality by the water flow and can detect the precipitate 103 at the correct position. Particularly, since the possibility that the sediment 103 is deposited on the front side of the guide portion 211 is higher, it is preferable that the measuring portion 230 always directs the front side.

The guide part 210 may have a signal line through which a measurement signal for the level from the float 220 and the relative height with respect to the sediment 103 can be drawn, Side can be exposed and connected to external equipment.

For this, the guide part 210 may be connected to the port part 240 at the end side, and the port part 240 may include a predetermined terminal to input / output signals to / from a control device or a communication device . As an example of the port unit 240, an RS232 port may be formed to enable external wire communication, but the present invention is not limited thereto.

5 is a side cross-sectional view for explaining a preferred embodiment of float in the precipitate sensor of the present invention.

As described above, the float 220 is disposed along the guide portion 210 so as to be able to move up and down only in a direction perpendicular to the longitudinal direction of the sewage pipe 101. The float 220 has a relationship between the precipitate 103 and the measuring portion 230 For detecting the correct height. The inner circumferential surface of the guide hole 231 may correspond to the shape of the outer circumferential surface of the guide portion 210. The guide hole portion 231 may be formed in the body portion 221,

In an embodiment of the present invention, since the body part 221 is configured to have directionality with respect to running water, the measuring part 230 can be disposed on the front side and the tail part 222 can be formed on the rear side .

When the flow of the water flows along the outer periphery of the body portion 221, the stem 222 functions to maintain the forward direction in the rearward side. However, the frame 222 is not limited to the illustrated embodiment.

When the tail unit is constructed as described above, the direction of the sewage flow can be detected in real time. The flow rate and flow velocity can also be measured by the shape of the body part and various detection means.

The guide portion 210 may have a cylindrical shape and the guide hole portion 231 may have a cylindrical space corresponding to the guide hole portion 231. In some cases, the shape of the body portion 221 may be omitted A predetermined guide projection portion (not shown) is formed in the guide portion 210 so as to maintain the orientation of the body portion 221 and the guide hole portion 231 of the body portion 221 corresponds to the guide projection portion A guide groove (not shown) may be formed.

Hereinafter, an embodiment in which the height of the body part 221 with respect to the guide part 210, that is, the water level of the sewage 102 can be measured will be described.

As shown in the figure, a magnet 232 capable of generating a magnetic force can be disposed in the body part 221 so that a predetermined contact can be interrupted at the guide hole part 231 side.

The magnet 232 may be disposed at a predetermined position along the inner circumference of the guide hole 231. At least one of the magnets 232 may be disposed at equal intervals in the circumferential direction. In the illustrated example, two magnetic bodies are disposed. In the present invention, since the float 220 maintains the directionality with respect to the flowing water, it can be considered that the float 220 is disposed in only one side.

6 is a front sectional view for explaining an embodiment of a guide part for the water level measurement structure.

A magnet 232 for generating a magnetic force is disposed inside the guide hole 231 and a sensing part 211 operated by the movement of the magnet 232 can be formed on the guide part 210.

The sensing unit 211 is preferably configured as a reed switch in order to improve productivity and durability, but is not limited thereto. The reed switch is a switch that seals a metal magnetic piece in a predetermined sealing structure and opens and closes the contact by an electromagnetic force, and has the advantage that it can be made compact. Since the reed switch has a small volume, it is advantageous to arrange it at each position of the guide portion 210 and also in terms of durability in a sewage treatment environment where there is a high possibility of corrosion and contamination.

The arrangement of the sensing units 211 may be variously selected, and the density of the sensing units 211 may be different according to the resolution capability of each measurement height unit. However, it is preferable to be arranged in an oblique shape as shown in the drawing, considering the adaptability and accuracy to various environments, but it is not limited thereto.

7 is a configuration diagram of the monitoring system of the precipitate of the present invention.

The sediment sensor of the sewage pipe having the float described above can be installed at each place of the sewer pipe to constantly measure the sedimentation amount of the sediment at each site. Based on this information, the water level ratio and, in particular, the sediment cross- have.

Thus, the sediment sensor 100 can constitute a system capable of real-time monitoring of the entire sewer system, and the sediment monitoring system functions to promptly cope with the sewerage flow rate and problems by each location do.

It should be noted that the concept of simultaneous and real-time monitoring of the sediment cross-sectional area ratio could not be applied conventionally.

For this purpose, a plurality of sediment sensors 100 are disposed at selected positions of the sewage pipe 101, and the height of the sediment and the height of the sediment can be measured respectively. The measurement information is collected through the server unit 300, Lt; / RTI >

For the communication with the server unit 300, each of the sediment sensors 100 or the set of the sediment sensors 100 constituting the predetermined set may be connected to the control and communication unit 500.

Basically, the control and communication unit 500 receives the measured value of the level by the reed switch sensing unit 211 and the measured distance by the measuring unit 230, which is an acoustic echo sounder, from the port unit 240 side, And transmits it to the server unit 300. The control unit and the communication unit may be separated from each other. At this time, each of the precipitate sensors 100 may include a control unit, and the communication unit may function to transmit information as a predetermined aggregate unit.

In the control and communication unit 500, the communication unit may be configured as a gateway, and may function to transmit measurement information continuously or in a predetermined sampling period to the server unit 300. For this purpose, May include a predetermined wired / wireless communication module and may include a wireless link scheme such as an 802.11 wireless LAN, a GSM, and a UMTS as well as a CDMA scheme, a 3G, and a 4G scheme using an existing mobile communication network as a communication scheme. In addition, not only a transmission / reception system using various RF signals, but also a short-range communication system using RFID, NFC, Zigbee, Bluetooth or IR can be considered as a wireless connection.

The control and communication unit 500 may be connected to the server unit 500 through the relay network 400. Here, the relay network may be a mobile communication base station or a network including a predetermined radio wave, and it should be understood that the relay network includes various types of communication equipment or a radio network.

Also, the server unit 300 may be a network server, and may be a mobile device having a communication module such as a notebook PC, a smart phone, a tablet, an information processing module, and a display.

8 is a block diagram for explaining an embodiment of a server unit in the sediment monitoring system of the present invention.

The server unit 300 may include a sediment monitoring unit 310 and functions to receive and aggregate measurement information from the respective sediment sensors 100 or calculation information from the control and communication unit 500.

For this purpose, the sediment monitoring unit 310 assigns coordinate information or a unique identification number to each of the sediment sensors 100, and classifies the information into individual locations and maps the information on a predetermined map, Monitoring can be enabled.

In addition, it includes a determination unit 320, receives measurement information from each of the sediment sensors 100, and derives an output value based on whether the sewer pipe is in a steady state, such as a water level ratio and / or a sediment cross- . These calculated values may be transmitted from the direct control and communication unit 500 as described above.

In addition, the determination unit 320 may determine whether or not a danger or a threshold value is reached for a predetermined position of the sewer pipe based on the calculated values, and inform the administrator of necessity of maintenance or dredging through the alarm unit 330 Can be performed.

The alert unit 330 may perform a notification function for the administrator in the display device in a visual or auditory manner. For this purpose, the alarm unit 330 may be connected to a predetermined alarm device (not shown).

The collected and analyzed information can be utilized as big data and can be utilized as a CFD (Computational Fluid Dynamics) simulation for backwash and submerged scenarios due to sewage sludge deposits. This could be used as a predictive model of risk warning for flood damage etc.

The sediment sensor of the sewer pipe having the above-mentioned float functions to accurately measure the amount of sediment in each part disposed in a predetermined area, and it is possible to perform real-time measurement without the placement of each attraction point. This provides the advantage.

In addition, the water level is measured physically by the float and the relative distance between the sediment and the float is measured by the acoustic method, so that the optimum measurement method is applied to the sewer pipe, and the accurate sediment amount can be detected.

Thus, when the sediment sensors are installed at each site and the measurement information is collected and managed through a predetermined network, information on the sewer pipe is provided to the relevant area, and in the urban life, flood damage from various causes such as heavy rainfall and overflow It is advantageous in that it can be prevented beforehand.

In the foregoing, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content of the following claims.

100 ... sediment sensor 101 ... sewer
102 ... sewage 103 ... sediment
210 ... guide part 211 ... sensing part
220 ... float 221 ... body part
222 ... Tee part 230 ... Measuring part
231 ... guide hole portion 232 ... magnet
240 ... Port part 300 ... Server part
310 ... sediment monitoring unit 320 ... judging unit
330 ... alarm unit 400 ... relay network
500 ... control and communication section

Claims

A guide part 210 installed on the inner circumferential side of the sewage pipe;
A float 220 rising and falling along the guide portion; And
And a measuring unit (230) coupled to the float and measuring the distance between the sediment precipitated at the bottom of the sewer pipe by means of sound,
The sub-
A body portion 221 for coupling the measurement portion to the bottom portion, a frame portion 222 disposed on the rear side to direct the front surface of the body portion in the water flow direction, and a guide hole portion 231 coupled to the guide portion,
And the height of the sediment is calculated through the distance from the sediment to the sediment sensor.

The method according to claim 1,
Wherein the measuring unit comprises:
And an acoustic echo canceller, and is arranged to direct the bottom of the sewer pipe in the vertical direction at the bottom of the float.

The method according to claim 1,
The guide portion
A plurality of sensing portions 211 are arranged in the height direction,
The sub-
And a magnet (232) capable of interrupting a contact of the sensing units.

The method of claim 3,
The sensing units,
And is arranged so as to be inclined from the inner circumferential side of the guide portion.

The method according to claim 1,
Wherein the measuring unit comprises:
And is coupled to the front bottom of the body part.

A sediment sensor of a sewage pipe according to any one of claims 1 to 5,
A port portion 240 provided in each of the sediment sensors;
A control and communication unit 500 connected to the port unit for signal processing and transmitting measurement information of a water level and a distance; And
And a server unit (300) for receiving the respective sediment sensor measurement information and monitoring in real time the state of the sediment to each part of the sewer pipe.

The method according to claim 6,
The server unit,
A determination unit (320) for calculating a ratio of the cross-sectional area of the sediment from the measurement information; an alarm unit (320) for generating an alarm in the display device when the amount or ratio of the sediment exceeds a reference value 330). &Lt; / RTI >