KR20170030878A - Sludge height measuring apparatus and monitoring system of sewer pipe using stress measuring method - Google Patents

Sludge height measuring apparatus and monitoring system of sewer pipe using stress measuring method Download PDF

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KR20170030878A
KR20170030878A KR1020150128340A KR20150128340A KR20170030878A KR 20170030878 A KR20170030878 A KR 20170030878A KR 1020150128340 A KR1020150128340 A KR 1020150128340A KR 20150128340 A KR20150128340 A KR 20150128340A KR 20170030878 A KR20170030878 A KR 20170030878A
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Prior art keywords
sediment
unit
shaft portion
stress
shaft
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KR1020150128340A
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Korean (ko)
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김한성
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김한성
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
    • G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
    • G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
    • G01F23/74—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G01L5/0042—Force sensors associated with force applying means applying a torque
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F2201/00—Details, devices or methods not otherwise provided for
    • E03F2201/40—Means for indicating blockage in sewer systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Sewage (AREA)

Abstract

The present invention relates to a sewage pipe sediment sensor and a monitoring system using a stress measurement method capable of accurately measuring sediments accumulated in a sewer pipe in real time, and provides a sewer pipe sediment sensor comprising: a shaft unit (210) vertically disposed inside a sewer pipe; a driving unit (240) rotating the shaft unit; and a measuring unit (230) coupled to an outer periphery of the shaft unit, measuring a change in stress wherein the measuring unit includes at least one plate unit, measuring a height of sediment in accordance with a change in stress of the plate unit due to rotation of a shaft.

Description

TECHNICAL FIELD [0001] The present invention relates to a sludge sediment sensor and monitoring system using a stress measurement method,

The present invention relates to measurement of sediment in a sewer pipe, and more particularly, to a sewage pipe sediment sensor and a monitoring system of a stress measuring method capable of accurately measuring sediment accumulated in a sewer pipe in real time.

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 is directed to a sewage pipe sediment sensor and monitoring system.

The present invention includes a shaft portion 210 vertically disposed in a sewer pipe, a driving portion 240 for driving the shaft portion to rotate, and a measurement portion 230 coupled to an outer periphery of the shaft portion and measuring a change in stress, The measurement unit includes at least one plate and provides a drainage pipe sensor for measuring the height of the deposit according to the change of the stress of the plate due to the rotation of the shaft. Therefore, it is possible to optimize the characteristics of the sewage and to measure the precise sediment.

The driving portion can rotate the shaft portion at a uniform angular velocity and torque. Therefore, it is possible to efficiently detect the change in the stress with respect to the non-flowable precipitate.

The plate portion is preferably protruded in the outer circumferential direction of the shaft portion, and is coupled to be inclined with respect to the shaft portion.

In one embodiment, the plate portion may be a helical plate portion formed in a spiral shape on the outer peripheral surface of the shaft portion.

In another embodiment, the plate portion may be a thin plate strike portion arranged to be inclined from the outer circumferential surface of the shaft portion and arranged at regular intervals in the height direction.

According to a further aspect of the present invention, there is further provided a floating body 220 which is lifted and lowered along the shaft portion and includes a magnet, and the shaft portion includes a plurality of switching portions 212 for which the contacts are interrupted by the magnet portion And may be arranged in the height direction. Therefore, accurate measurement of the water level is possible.

The float has a curved recess 221 arranged on the outer circumferential side so that the shaft portion is arranged on the center side and is not interfered with the ascending and descending time measuring portion and a guide portion 211 having a rib shape formed along the height direction on the outer peripheral surface of the shaft portion And corresponding guide grooves 222 may be provided.

The present invention is characterized by comprising a control and communication unit (500) having a sediment sensor of the sewage pipe, for signal processing and transmitting measurement information of the level and the distance from each of the sediment sensors, and receiving each of the sediment sensor measurement information, And a server unit (300) for monitoring the state of the sediment with respect to the sediment.

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.

The sewage pipe sediment sensor of the stress measuring method of the present invention functions to accurately measure the amount of sediment in each part disposed in a predetermined area and can perform real-time measurement without disposing each point of the workforce, There is a possible effect.

In addition, since the height of the sediment can be measured through the stress measurement according to the deformation of the plate portion, the structure having a simple structure can be applied and a measurement method optimized for the sewer pipe can be applied.

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 sewage pipe sediment sensor of a stress measurement system according to the concept of the present invention.
3 is a front view of the precipitate sensor according to the first embodiment of the present invention.
4 is a front view of a sediment sensor according to a second embodiment of the present invention.
FIG. 5 is a schematic diagram of a sewerage sediment sensor of a stress measurement scheme according to a further concept of the present invention. FIG.
6 is a view for explaining an embodiment of a shaft portion and a float 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 sewage pipe sediment sensor according to a preferred embodiment of the present invention and a monitoring system for sediments 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 shaft portion vertically disposed in a sewer pipe, a driving portion rotatingly driving the shaft portion, and a deformation of stress caused by flow resistance or self weight of the material attached to the outer circumference of the shaft portion, And a measurement unit for measuring the temperature.

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 sewage pipe sediment sensor of a stress measurement system 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 past, the method of measuring the sediment by inserting a wick in the way of measuring a certain sediment, or measuring the distance through a time difference of an optical path was mainly used. However, such a measuring method measures the sediment of a sewer pipe buried in the ground And it is particularly difficult to apply to sewage in a turbid state as described above.

The present invention focuses on the difference in the specific gravity between the sewage (102) and the sediment, and by detecting the boundary by a mechanical method as a strain due to the stress, it is detected as an electrical signal, thereby suggesting an optimum method for measuring the sediment do.

The measurement unit 230 of the present invention is preferably applied with a strain gauge method. More specifically, the measurement unit 230 is configured as a sheet-like plate portion arranged to protrude from the outer periphery of the shaft portion 210, Or specific gravity, and a predetermined gauge measures a change in stress by detecting an increase in electrical resistance by detecting a mechanical strain whose length increases with deformation of the tensile direction.

However, it is apparent to those skilled in the art that various known strain gauges may be applied or modified as long as it is sufficient to measure the change in the stress acting on the plate at the boundary between the sewage and the sediment.

Various embodiments of the plate portion constituting the measurement unit 230 described above will be described later.

It is difficult to measure the stress in the fixed plate portion because the flow of sewage is generated in the sewage pipe 101 but the precipitate 103 is deposited in a substantially non-fluid phase or a low fluid phase.

In consideration of this, the shaft portion 210 may be continuously supplied with rotational power in the horizontal direction, and such driving force may be provided from the driving portion 240.

Accordingly, the shaft portion 210 performs a function of rotating and supporting the measuring portions 230 while coupling them. Also, as will be described later, when a floating body for measuring the water level is provided, it can function as a guide for sliding guidance.

The shaft 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 shaft portion 210 may have a cylindrical shape and may be formed of a material having excellent corrosion resistance. Further, it is more preferable that the surface treatment is performed so as to prevent adsorption or adhesion of foreign matter.

The driving unit 240 may be coupled to the upper drawer of the shaft unit 210. The driving unit 240 continuously rotates the shaft unit 210 by receiving an external control input, And / or the contact area with the precipitate can be changed.

The driving unit 240 may be rotated at a constant torque and angular velocity through a control voltage. Preferably, the angular velocity is set so that the linear velocity of the plate is lower than the flow of the sewage. For this, the driving unit 240 may be configured as a combination of a motor and a speed reducer.

That is, when the plate portion constituting the measuring unit 230 is continuously rotated to move the position, a stress change may occur at each interface, which can be detected by a change in resistance value as described above. Therefore, when the stress measuring method is applied in the measuring unit 230 of the present invention, it is possible to simultaneously measure the height, which is the position of the interface between the atmosphere and the sewage and the position of the interface between the sewage and the sediment, will be.

However, when the plate portion is constituted by a single or a plurality of plate portions and is arranged in a horizontal direction, substantially no change in the stress is affected. Therefore, in the rotated configuration of the shaft portion 210, it is inevitably necessary to form a predetermined angle of the plate portion with respect to the horizontal direction.

For example, a case where a plurality of plate portions are projected in the outer circumferential direction of the shaft portion 210 and arranged in the height direction to measure the stress due to the rotation may be considered. However, in this case, since the change of the stress due to the rotation is not meaningful, it is preferable that the plate portion has at least a slope which is horizontal or not perpendicular to the axial direction.

When the height of the sediment is measured and provided as measurement information, the ratio of the sediment cross-sectional area, which is 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 calculated sediment cross- It is possible to dredge the site by making it possible for the manager to check it.

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.

Figure pat00001

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 unit or the server unit . In addition, although it is based on the fact that the height h of the sediment is uniformly deposited in a horizontal state, the degree of unevenness of the surface state to some extent is negligible as it is important to determine whether dredging is necessary for a reference value to which precipitation has been made .

On the other hand, the treatment capacity of the basic wastewater was ordinarily determined by the water level ratio, which can be defined as the water level with respect to the diameter of the sewage pipe 101. According to the concept of the present invention, since the height of the sediment and the level of the sewage are measured at once, this level ratio can also be accurately detected.

3 is a front view of the precipitate sensor according to the first embodiment of the present invention.

As described above, the plate portions constituting the measuring unit 230 are formed in the form of a thin plate, and detect a change in flow resistance or specific gravity, thereby generating a measurement signal as an electrical change while deforming.

For this purpose, it is preferable to arrange the plate portion so as to be inclined with respect to the shaft portion 210. In the first embodiment of the present invention, the plate portion is formed in a spiral shape on the outer periphery of the shaft portion 210. [

As shown in the figure, the plate portion is formed as a helical plate portion 231 and is projectingly disposed in the form of a thread on the outer surface of the shaft portion 210. [ At this time, the spiral plate portion 231 can be formed as a single thin plate, and a case where a plurality of thin plates are arranged in a spiral shape can also be considered.

When the spiral shape is arranged at a predetermined pitch, a difference in stress is generated on each boundary portion according to the rotation by the driving unit 240, so that a point at which a difference in stress is clearly generated at a predetermined height is determined as the height or level of the precipitate To be able to do so.

However, since a thin plate is spirally arranged on the shaft portion 210 as described above, there is a possibility of causing a problem in the production process and maintainability, so that the second embodiment of the present invention provides a concept to improve the same.

4 is a front view of a sediment sensor according to a second embodiment of the present invention.

In the second embodiment of the present invention, a case in which a plurality of plate portions formed in a thin plate shape are arranged to be inclined with respect to the shaft portion 210 and are arranged at equal intervals in the height direction will be described.

The plate portion is defined as a strike portion 234, and may be formed in a semicircular or arcuate shape as shown in the drawing.

The strut part 234 can be deformed while the friction part between the sewage 102 and the precipitate 103 is continuously changed as the shaft part 210 is rotated by the driving part 240. [

The strain at each of these locations can be detected as the difference in stress along the height and the height of the interface can be measured.

The plate portions according to the embodiments of the present invention described above are deformed such as sagging at a portion contacting with the precipitate 103 and are relatively less deformed at the side where the plate is rubbed with sewage. It can be understood that this is due to difference in specific gravity and flow resistance.

These plate parts are preferably thin plates and made of stainless steel or a material containing them in consideration of durability, but are not limited thereto.

The gage section 235 is disposed at an interval set at each position of each plate section or plate section so that the amount of change in the stress can be output as an electrical signal. (Not shown).

If the sensitivity of the plate to stress changes is applied to the environment, it can be applied to measurement of flow rate and flow rate.

To this end, a port (not shown) for outputting a signal may further be provided on a side adjacent to the driving unit 240. [ The port unit may include a predetermined terminal to input / output a signal to / from a control device or a communication device as will be described later. As an example of the port portion, an RS232 port may be formed to enable external wire communication, but the configuration of the port portion is optional.

FIG. 5 is a view for explaining a sewerage sediment sensor of a stress measurement method according to a further concept of the present invention.

As described above, in the case of the apparatus to which the stress measuring method of the present invention is applied, since the boundary surface can be detected through the change of the stress value of the plate portion, it is possible to temporarily acquire the water level and the height of the sediment.

In the case of water surface, the change is large and the degree of deformation by thin plate may be relatively small.

Accordingly, in a further embodiment of the present invention, it is possible to further comprise a float 220 which can be raised and lowered along the shaft portion 210 by the level of the sewage.

Accordingly, the water level of the sewage 102 can be measured mainly as the height of the ascending and descending steel against the shaft portion 210 of the float 220, and the sedimentation amount or the height of the sediment 103 can be measured through the change of the stress.

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.

It should be noted that the water level of the sewage water may be calculated by complementarily interpreting the height measured by the float 220 and the measurement information of the boundary between the atmospheric water and the sewage measured by the measuring unit 230.

At this time, the shaft portion 210 functions as a guide portion for lifting and lowering the float 220.

In the drawings, the reference numerals denoting heights may be defined as follows.

D: Diameter of the sewer pipe

ℓ: Position of float (level)

h: height of sediment

Dw: distance between water level and sediment

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. Thus, the float 220 is at least as small in specific gravity as water.

In the case of the float, in the case where there is no sewage water level in the sewage pipe 101, that is, in the case where there is no flow amount, the sewage can be lowered to the site where the sediment 103 is disposed. A stopper (not shown) may be further provided on the lower end of the shaft portion 210 for protecting the float 220 from further downward movement.

FIG. 6 is a plan sectional view for explaining a concrete example of a float and a shaft in a sewer pipe sediment sensor of the stress measuring method of the present invention. FIG.

Although the shape of the float 220 is optional, in the concept of the present invention, since the shaft portion 210 rotates with a certain angular displacement for measurement of the stress change, the float 220 maintains a constant shape with respect to the water flow Are preferred for structural stability.

In consideration of this, the float 220 may be formed entirely in the shape of a disk or a cylinder, and it is more preferable that the shaft portion 210 is disposed in the inner peripheral through hole and arranged concentrically with each other.

According to the second embodiment of the present invention, a recess 221 having a spacing not interfering with the measuring unit may be formed at a position where the measuring unit 230 is disposed.

A guide portion 211 in the form of a rib formed along the height direction is disposed in the shaft portion 210 so that displacement does not occur outside the vertical position due to the flow of the sewage or the rotation of the shaft portion 210, A guide groove 222 which can be slidably guided in the vertical direction can be formed.

The body of the float (220) may be provided with a magnet (232) capable of generating a magnetic force so as to intercept a predetermined contact from the inner peripheral side.

The magnet 232 may be disposed at a predetermined position along the inner periphery of the center-side guide hole (not shown), and at least one of the magnets 232 may be disposed at equal intervals in the circumferential direction no. 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.

The movement of the float 220 leads to the movement of the magnet 232, and the switching part 212 operated according to the movement of the magnet 232 can be formed on the shaft part 210.

The switching unit 212 is preferably configured as a reed switch for the sake of efficiency and durability. However, the switching unit 212 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 the reed switch at each position of the shaft portion 210 and also has a durability in a sewage treatment environment where there is a high possibility of corrosion or contamination.

The arrangement of the switching units 212 may be variously selected depending on the selection, and the density of the switching units 212 may be different according to the resolution capability of each measurement height unit. Considering the adaptability and accuracy to various environments, it is also possible to consider the arrangement in an oblique line.

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

The sewage pipe sediment sensor of the stress measurement method 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 especially the sediment cross sectional area ratio can be calculated.

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.

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.

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 and signals the level measurement value by the switching unit 212, which is a reed switch, and the height information of the sediment by the measurement unit 230 that measures the stress change, 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, it should be understood that the relay network may be a mobile communication base station capable of utilizing CDMA or a network composed of predetermined radio waves and includes various types of communication equipment or radio networks.

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, a determination unit 320 may be provided to receive the measurement information from each of the sediment sensors 100 and to derive a calculation value based on the determination of the steady state of the sewer pipe, such as the ratio of the cross-sectional area of the sediment and / have. 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 sewage pipe sediment sensor of the stress measuring method described above functions to accurately measure the amount of sediment in each part disposed in a predetermined area and can perform real-time measurement without placing each part of the workforce, to provide.

In addition, since the height of the sediment can be measured through the stress measurement according to the deformation of the plate portion, a simple structure and a measurement method optimized for the sewer pipe are applied, thereby enabling accurate sediment amount detection.

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 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.

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 ... shaft portion 211 ... guide portion
212 ... switching part 220 ... float
221 ... grooves 222 ... guide grooves
222 ... Tee part 230 ... Measuring part
231 ... spiral plate portion 232 ... strut portion
235 ... Gage 240 ... Drive
231 ... guide hole portion 232 ... magnet
240 ... driving unit 300 ... server unit
310 ... sediment monitoring unit 320 ... judging unit
330 ... alarm unit 400 ... relay network
500 ... control and communication section

Claims (9)

A shaft portion 210 vertically disposed inside the sewer pipe;
A driving unit 240 for rotating the shaft unit; And
And a measuring part (230) coupled to an outer periphery of the shaft part and measuring a change in stress,
Wherein the measuring unit comprises:
Wherein the height of the precipitate is measured according to a change in the stress of the plate portion due to the rotation of the shaft.
The method according to claim 1,
The driving unit includes:
And the shaft portion is rotated as a uniform angular velocity and torque.
The method according to claim 1,
The plate portion,
Wherein the sensor is protruded in an outer circumferential direction of the shaft portion and is inclined relative to the shaft portion.
The method of claim 3,
The plate portion,
And a spiral plate portion (231) formed in a spiral shape on the outer peripheral surface of the shaft portion.
The method of claim 3,
The plate portion,
And a strut portion (234) formed of a thin plate arranged to be inclined from the outer circumferential surface of the shaft portion and arranged at regular intervals in the height direction.
The method according to claim 1,
And a float (220) raised and lowered along the shaft portion and having a magnet,
The shaft portion
And a plurality of switching parts (212) for which the contacts are interrupted by the magnet part are arranged in the height direction.
The method according to claim 6,
The sub-
A guide groove 211 is formed on the outer peripheral surface of the shaft portion so as not to interfere with the measurement portion of the ascending / descending movement, and a guide groove 211 222). ≪ / RTI >
A sewage pipe according to any one of claims 1 to 7,
A control and communication unit 500 for signaling and transmitting measurement information of the level and the distance from each of the sediment sensors; 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.
9. The method of claim 8,
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). ≪ / RTI >
KR1020150128340A 2015-09-10 2015-09-10 Sludge height measuring apparatus and monitoring system of sewer pipe using stress measuring method KR20170030878A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190108310A (en) * 2018-03-14 2019-09-24 주식회사 에이유이 Sensor for level in the cup and device for purification of water using thereof
EP3971540A1 (en) * 2020-09-17 2022-03-23 Evonik Operations GmbH Characterization of a phase seperation of a coating composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190108310A (en) * 2018-03-14 2019-09-24 주식회사 에이유이 Sensor for level in the cup and device for purification of water using thereof
EP3971540A1 (en) * 2020-09-17 2022-03-23 Evonik Operations GmbH Characterization of a phase seperation of a coating composition

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