KR101456981B1 - Water level monitoring system for sewerage - Google Patents

Abstract

The present invention relates to a drain pipe water lever measurement monitoring system comprising: a water level measurement unit including a first water level measurement apparatus and a second water level measurement apparatus, wherein the first water measurement apparatus is installed on a manhole ceiling of a drain pipe to measure a water level in a manhole in a non-contact manner and the second water level measurement apparatus measures the water level in a contact manner by setting a dangerous water level section; an integrated signal processing apparatus which removes the first water level measurement apparatus and the second water level measurement apparatus of the water lever measurement unit or transmits data measured by the apparatuses to a management server in real time; a management server which converts and analyzes data received from the integrated signal processing apparatus; and a monitoring unit which monitors a drain pipe condition in real time by reading data processed by the management server.

Description

{WATER LEVEL MONITORING SYSTEM FOR SEWERAGE}

More particularly, the present invention relates to a monitoring system for measuring the level of a sewer line, and more particularly, to a monitoring system for measuring the level of a sewer line, The present invention relates to a monitoring system for monitoring the level of a sewage pipe line in a sewer pipe line monitoring system in which a measurement device is interlocked and a real-time water level measurement is performed in a manhole, and accuracy and stability of the measurement are improved to ensure accurate alarm and disaster prevention.

In general, sporadic torrential rainfall worldwide is causing massive economic and human damage. Therefore, there is a need for an appropriate measurement system and a management system for prevention. For this purpose, it is necessary to remotely observe the water level of dams, railways, coasts, reservoirs, etc. that need to be measured in hazardous areas or water level automatically, 24 hours a day.

In the past, conventional touch sensors such as sonic sensors and buoys have been used. However, these methods can cause malfunction due to leakage and foreign matter from the sensor due to flood and sudden change in flow rate. There is a problem that it is impossible to monitor the water level.

In particular, although the ultrasonic sensor water level meter is installed under the manhole of India and the roadway to perform the real-time water level measurement, the conventional ultrasonic sensor water level meter forms a fire detection area difficult to measure from 30 cm to 50 cm from the launch point due to the characteristics of the ultrasonic sensor It is impossible to accurately measure the water level in the manhole when the water level in the manhole suddenly rises due to the rainstorm or the like or the water level falls into the fire detection area or the contact type buoyancy measurement method (or level switch) is installed However, there has been a problem that a malfunction due to the leakage of the sensor portion and foreign matter occurs due to a sudden change in the water level and a change in the flow rate due to a sudden change in the water level in the danger zone.

This can cause personnel accidents such as a manhole cover being exploded and causing a passerby to be hurt or falling into a manhole, and the damaged vehicle and property may be damaged, causing problems such as underground parking lot of a building or flooding of a lowland, There is a problem in that a problem occurs.

In addition, the above-described prior art is a case where a non-contact type ultrasonic sensor water level meter or a contact type buoyancy measuring method (or level switch) is operated alone, and there are problems such as frequent hunting errors, There is a problem in that it is difficult to make a clear determination of the risk of flooding.

Korean Patent No. 10-0944791

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide a water level measuring apparatus of ultrasonic measuring method and a second level measuring apparatus of a buoyancy (or level switch) The present invention provides a monitoring system for monitoring the level of a sewage pipe installed in a sewer pipe connected to the sewage pipe to monitor the level of the sewer pipe in real time and to improve the accuracy and stability of the measurement to prevent an alarm and disaster.

It is another object of the present invention to provide a water level measuring and monitoring system for a sewage pipe, which comprises a first level measuring device for forming a horizontal channel in which an ultrasonic wave emitted from an ultrasonic sensor moves horizontally in a sensor guide And the ultrasonic waves are reflected at a 90-degree angle to the end of the horizontal pipe to perform the measurement, thereby maximizing the accuracy of the water level measurement by zeroing the non-detection area which can not be measured by the existing first water level measuring device, Is installed in the danger level section, it is possible to quickly cope with a sudden change in water level due to rainstorm, etc., and a measurement error due to a change in flow rate and foreign matter.

The present invention relates to a water level measuring unit comprising a first water level measuring apparatus installed on a manhole ceiling of a sewer line and measuring a water level in a manhole by a non-contact method, and a second water level measuring apparatus measuring a water level by setting a danger level section; An integrated signal processing unit for controlling the first water level measuring unit and the second water level measuring unit of the level measuring unit or transmitting the measured data to the management server in real time; A management server for converting and analyzing data received from the integrated signal processing unit; And a monitoring unit for reading the data processed by the management server and monitoring the state of the sewage pipe in real time.

The first water level measuring device of the water level measuring part measures the water level of the whole inside of the manhole in real time and the second water level measuring device operates to detect only the water level of the dangerous section.

In addition, the monitoring unit may be configured to operate corresponding means including the on-site measures, the control of the pump station operation timing, and the cleaning timing of the sewage pipe when a danger level signal is detected from the water level measuring unit.

The risk signal of the second level measuring apparatus is preferentially processed when the signal level of the danger level detected by the first level measuring apparatus and the second level measuring apparatus of the level measuring unit are different from each other.

When the water level of the sewage line is determined to be a dangerous level, the monitoring unit invokes guiding means for transmitting an urgent message to the portable terminal of the local residents.

The first level measuring apparatus may further include: an ultrasonic sensor; A sensor guide provided at one side of the ultrasonic sensor and forming a channel through which ultrasonic waves emitted from the ultrasonic sensor travel in a horizontal direction; An ultrasonic reflecting surface formed on the opposite sensor guide end where the ultrasonic sensor is installed to reflect the traveling path of the ultrasonic wave emitted from the ultrasonic sensor in the direction of 90 degrees; An ultrasonic wave discharge port through which ultrasonic waves reflected by the ultrasonic wave reflecting surface are emitted to the outside of the sensor guide; And a calibration target slidably installed on one side of the discharge port and positioned in the ultrasonic wave discharge path.

Further, the ultrasonic reflection surface is formed to be inclined at 135 degrees with respect to the longitudinal direction channel of the sensor guide.

In addition, the total distance from the movement path of the ultrasonic waves in the sensor guide to the calibration target is longer than the non-detection area distance of the ultrasonic sensor.

Further, the measurement surface of the calibration target is located inside the sensor guide.

Also, the second level measuring apparatus may include a buoyancy measuring method (or level switch); Only when the buoyancy measuring method (or level switch) is installed in the dangerous water level section and the water level value of the first water level measuring apparatus is in the measurement period of the second water level measuring apparatus set to the dangerous water level section, Value as a true value.

The present invention provides a sewer pipe level measurement monitoring system in which a first level measuring device of an ultrasonic measuring method and a second level measuring device of a buoyancy (or level switch) measuring method are installed under a manhole of an inland and a motorway, And also has the effect of increasing the accuracy and stability of the measurement, thereby enabling accurate alarm and disaster prevention.

In the present invention, ultrasonic waves emitted from an ultrasonic sensor are horizontally moved in a sensor guide provided at one side of the ultrasonic sensor, and ultrasound waves are reflected at an angle of 90 degrees on the end of the horizontal channel, It is possible to maximize the accuracy of the water level measurement by zeroing the non-sensing area which can not be measured by the existing first water level measuring apparatus, and maximize the stability of the water level measurement by interlocking with the second water level measuring apparatus

Further, the present invention can quickly determine the level of water level measurement and measurement error even in the case of water level error due to sudden rise in water level due to surprise rainstorm, etc. or in case of damage or loss of the first and second water level measuring devices It is possible to respond quickly to an accident such as a manhole explosion.

1 is a conceptual diagram of a sewage pipe level monitoring system according to the present invention;
2 is a schematic view showing a first level gauge for level measurement according to the present invention.
3 is a conceptual diagram for explaining a water level measurement principle using a first water level measuring apparatus according to the present invention.
4 is a conceptual diagram illustrating a fire detection area in the first level gauge according to the present invention.
5 is a conceptual view showing a measurement of a real distance using the first level measuring apparatus according to the present invention.
6 is a conceptual diagram for explaining a water level measurement principle using the first and second water level measuring apparatuses according to the present invention.
FIG. 7 is a block diagram illustrating a sewer pipe level monitoring system according to the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram of a sewage pipe level monitoring system according to the present invention. Referring to FIG. 1, the sewer pipe level monitoring system according to the present invention includes a water level measuring unit 10, an integrated signal processing unit 20, a management server 30, and a monitoring unit 40.

First, the water level measuring unit 10 includes a first water level measuring apparatus 100 installed at a manhole ceiling of a sewage line and measuring the water level in the manhole by a non-contact method, And a second water level measuring device 200 installed on the manhole ceiling for measuring the water level in the manhole by the contact method.

At this time, the first level measuring apparatus 100 of the level measuring unit 10 real-time measures the level of the entire inside of the manhole, and the second level measuring apparatus 200 operates to detect only the level of the dangerous section.

For example, the first level measuring apparatus 100 may be an ultrasonic sensor, and the second level measuring apparatus 200 may be a buoyancy measuring mode or a level switch detecting sensor.

1 and 7, the integrated signal processing apparatus 20 includes an operation switch (not shown) and a water level measurement algorithm operated for operation, menu setting, and result output at the time of measuring the level of the sewage line, A control unit 300 for implementing the measurement and determining the abnormality of the level measuring unit 10 and performing an operation and control related to the level measurement, And an external output unit 330 for outputting the measured water level through the control unit 300. However, the present invention is not limited thereto.

The integrated signal processing apparatus 20 may control the RF transmission function and the first level measuring apparatus 100 and the second level measuring apparatus 200 of the level measuring unit 10 so that remote measurement can be performed, And a data logging function capable of storing the measured values of the measured values in the data storage unit 320.

The external output unit 330 may include display means 340 such as an ultra thin film (TFT) color LCD, a touch screen, or the like so as to process and output data in a desired output form (analog output, digital output, And the relay 350, and the measured data is transmitted to the management server 30 in real time through the external output.

Then, the management server 30 converts and analyzes the data received from the integrated signal processing device 20, and transmits the data to the monitoring unit 40.

The monitoring unit 40 reads data processed by the management server 30 and monitors the status of the sewer pipe in real time.

At this time, when the danger level signal is detected from the water level measuring unit 10, the monitoring unit 40 operates a countermeasure including the on-site measures, the control of the pump station operation time, and the cleaning time of the sewage pipe.

At this time, the corresponding means can be operated through a pre-organized correspondence team or an emergency communication network.

When the danger level signals detected by the first level measuring apparatus 100 and the second level measuring apparatus 200 of the level measuring unit 10 are different from each other, the danger signal of the second level measuring apparatus 200 It can be processed first.

In particular, in an emergency such as heavy rains, the inoperable state of the ultrasonic sensor may become frequent, so that the mechanical operation of the second level measuring apparatus 200 designed to detect only a specific dangerous period can be relied upon first.

If the water level of the sewage line is determined to be a dangerous water level, the monitoring unit 40 may activate guidance means for transmitting an emergency message to the portable terminal of the local residents.

2 is a schematic view showing a first level gauge for level measurement according to the present invention.

2, the first level measuring apparatus according to the present invention includes an ultrasonic sensor 110, a sensor guide 120, an ultrasonic reflecting surface 130, an ultrasonic wave emitting port 140, and a calibration target 150 do.

The sensor guide 120 is formed in a tubular shape, and an ultrasonic sensor 110 is installed at one end. At this time, the ultrasonic sensor 110 can be fixedly installed using the side wall of the sensor guide 120.

In order to prevent the ultrasonic sensor 110 from vibrating and moving, the ultrasonic sensor 110 and the inner wall of the sensor guide 120 may be filled with a filler or the like to be fixed.

The sensor guide 120 may be made of a synthetic resin material or the like to prevent rust and corrosion due to moisture.

In addition, the sensor guide 120 forms a channel through which ultrasonic waves emitted from the ultrasonic sensor 110 move in the horizontal direction. At this time, the ultrasound reflection surface 130 is formed at the end of the channel.

The ultrasonic reflecting surface 130 is inclined at an end of the opposite sensor guide 120 on which the ultrasonic sensor 110 is installed to reflect the traveling path of the ultrasonic wave emitted from the ultrasonic sensor 110 in the direction of 90 degrees do.

The ultrasonic reflecting surface 130 may be formed using a glass surface or a metal surface. When the ultrasonic reflecting surface 130 is inclined at an angle of 135 degrees with respect to the longitudinal direction of the sensor guide 120, 90 degrees.

At this time, the ultrasound reflection surface 130 may be formed in a shape in which both the side surface and the bottom surface are opened. Or the sidewall of the sensor guide 120 may be extended so as to surround the side surface.

An ultrasonic wave discharge port 140 through which the ultrasonic waves reflected by the ultrasonic wave reflecting surface 130 is discharged to the outside of the sensor guide 120 is formed.

The length of the sensor guide 120 and the length from the sensor guide 120 to the end of the ultrasound reflection surface 130 should be at least the non-detection area of the ultrasonic sensor.

This is because the detection area distance of the conventional ultrasonic sensor ranges from 30 cm to 50 cm. In the present invention, a non-detection area point is formed in the horizontal direction of the sensor guide 120.

A calibration target 150 is slidably installed on one side of the discharge port 140.

The calibration target 150 may be slid into the discharge port 140 to move the position of the calibration target 150. A distance reflected by the calibration target 150 may be set as a reference point by emitting an ultrasonic wave in a state where the center is positioned on the ultrasonic wave emitting path. , And the distance before the reference point is defined as a non-sensing area point (D2).

At this time, the accuracy of the measurement and the stability can be improved by forming the total distance from the movement path of the ultrasonic waves in the sensor guide 120 to the calibration target 150 to be longer than the non-detection area distance of the ultrasonic sensor 110.

In addition, the measurement surface of the calibration target 150 may be located inside the sensor guide 120, and the position thereof may be substantially the same as the bottom surface (discharge port) of the sensor guide 120 desirable.

An installation adapter 160 may be further formed on the upper surface of the sensor guide 120. The mounting adapter 160 is a protruding structure fixed to the sensor guide 120, and can be easily coupled to the surrounding structure by forming a screw tab or the like.

For example, when the first level measuring apparatus 100 is installed in a basement manhole, the installation adapter 160 can be easily fixed to the bracket structure formed on the manhole side by using a nut member or the like.

The water level measuring method using the first water level measuring apparatus of the present invention as described above will be described as follows.

FIG. 3 is a conceptual diagram for explaining the principle of level measurement using the first level measuring apparatus according to the present invention, FIG. 4 is a conceptual view showing a non-detecting region point in the first level measuring apparatus according to the present invention, FIG. 3 is a conceptual diagram showing a measurement of a real distance using a first level measuring apparatus according to the present invention. FIG.

3 to 5, there is shown an example in which the water level measuring apparatus 100 of the present invention is installed in a manhole and is used for measuring a water level in a manhole.

3, the distance from the reference surface of the calibration target 150 to the bottom of the manhole is denoted by D1, and the distance from the ultrasonic sensor 110 to the calibration target 150 The water level L in the actual manhole can be defined by the following equation 1 when the distance from the ultrasonic sensor 110 to the measured water surface is D3.

 (Equation 1) L (water level) = (D1 + D2) -D3

6 is a diagram for determining a true value of a water level L currently measured through a first water level measuring apparatus and a second water level measuring apparatus, wherein the second water level measuring apparatus is for indicating a first danger level H alarm (ON / OFF) The H and HH buoyancy measurement method (or level switch) has a buoyancy measurement method (or level switch) and a buoyancy measurement method (or level switch) which shows a second danger level HH alarm (ON / OFF) As shown in FIG.

H Hazard level (H _value ) (Or level switch) is OFF before the level is raised to the HH _value (HH _value ), and when the level rises to the H or HH hazard level, the corresponding buoyancy measurement method ) Is ON and can have the same conditions as Table 1.

Condition H HH Second level meter status One OFF OFF normal 2 ON OFF normal 3 ON ON normal 4 OFF ON abnormal

Since the condition in which the H buoyancy measurement method (or level switch) is OFF and the HH buoyancy measurement method (or level switch) is ON is not a condition that can be caused by the change of the water level as in Condition 4 in Table 1, And the error is output to the management server 30 in response to the abnormality.

The water level L measured by the first water level measuring apparatus is defined as (Formula 2) according to the conditions 1, 2, 3 and 4 of the second water level measuring apparatus in Table 1, and is output to the external output unit 330 as Output _L If an abnormal measurement condition occurs, it outputs error and Output _L for each condition.

<Condition 2> Condition 1. L <H _value => Output _L = L (normal measurement condition)

H _value ≤ L => Output _L = H _value (abnormal measurement state)

Condition 2. H _value ≤ L <HH _value => Output _L = L (normal measurement state)

HH _value ≤ L => Output _L = H _value (abnormal measurement state)

L <H _value => Output _L = H _value (abnormal measurement state)

Condition 3. HH _value ≤ L => Output _L = L (normal measurement state)

L <HH _value => Output _L = HH _value (abnormal measurement state)

Condition 4. Output _L = L (abnormal measurement state)

L = water level obtained from the first water level measuring device

H _value = the first level of water level of the second level measuring device

HH _value = Secondary water level point of the second water level measuring device

Output _L = Final output level

As described above, according to the present invention, there is provided a sewage pipe level measurement monitoring system in which a first level measuring device of an ultrasonic measuring method and a second level measuring device of a measuring method using a buoyancy measuring method or a level switch are interlocked, To provide real-time water level measurement in the manhole, as well as to increase the accuracy of the measurement to ensure accurate alarm and disaster prevention.

In the present invention, the ultrasonic wave emitted from the ultrasonic sensor is horizontally moved in the sensor guide provided at one side of the ultrasonic sensor, and the ultrasonic wave is reflected at the angle of 90 degrees to the end of the horizontal channel. Thus, it is possible to maximize the accuracy of the water level measurement by zeroing the non-detection area which can not be measured by the existing first water level measuring apparatus, and the second water level measuring apparatus of the contact type can be installed in the danger level section, The stability of the final output measurement data can be maximized by comparing measured data between two level measuring devices.

In addition, the present invention can precisely measure a water level and detect a measurement error situation even in a malfunction state due to a loss of a sensor portion and foreign matter due to a sudden change in the water level and a change in flow rate due to a surge or the like, .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You can understand that you can.

For example, a person skilled in the art can change the material, size and the like of each constituent element depending on the application field or can combine or substitute the embodiments in a form not clearly disclosed in the embodiments of the present invention, Of the range.

Therefore, it should be understood that the above-described embodiments are only illustrative in all aspects and should not be construed as limiting the scope of the invention, and such modified embodiments are included in the technical idea described in the claims of the present invention.

10: Level measuring part 20: Integrated signal processing device
30: management server 40: monitoring unit
100: first level measuring device 110: ultrasonic sensor
120: Sensor guide 130: Ultrasonic reflection surface
140: Ultrasonic discharging port 150: Calibration target
160: Installation adapter 200: Second level meter
300: control unit 310:
320: Data storage unit 330: External output unit
340: Display means 350: Relay
360: Analog output 370: Digital output

Claims (10)

A water level measuring unit installed at a manhole ceiling of a sewage line to measure a water level in a manhole by a non-contact method, and a second water level measuring unit for measuring a water level in a contact manner by setting a danger level section;
An integrated signal processing unit for controlling the first water level measuring unit and the second water level measuring unit of the level measuring unit or transmitting the measured data to the management server in real time;
A management server for converting and analyzing data received from the integrated signal processing unit; And
And a monitoring unit for reading data processed by the management server and monitoring the state of the sewage pipe in real time,
The first level gauge includes an ultrasonic sensor;
A sensor guide provided at one side of the ultrasonic sensor and forming a channel through which ultrasonic waves emitted from the ultrasonic sensor travel in a horizontal direction;
An ultrasonic reflecting surface formed on the opposite sensor guide end where the ultrasonic sensor is installed to reflect the traveling path of the ultrasonic wave emitted from the ultrasonic sensor in the direction of 90 degrees;
An ultrasonic wave discharge port through which ultrasonic waves reflected by the ultrasonic wave reflecting surface are emitted to the outside of the sensor guide; And
And a calibration target slidably installed on one side of the discharge port and positioned in an ultrasonic wave discharge path.
The method according to claim 1,
Wherein the first level measuring device of the level measuring part measures the level of the entire inside of the manhole in real time and the second level measuring device operates to detect only the level of the dangerous section.
The method according to claim 1,
Wherein the monitoring unit operates countermeasures including the on-site measures, the control of the pump station operation timing, and the cleaning timing of the sewage pipe when a danger level signal is detected from the water level measuring unit.
The method according to claim 1,
Wherein the risk signal of the second water level measuring device is preferentially processed when the signal of the level of the water level detected by the first water level measuring device and the second water level measuring device of the level measuring part are different from each other.
The method according to claim 1,
Wherein the monitoring unit activates guidance means for transmitting an urgent message to the portable terminal of the residents of the area when the water level of the sewage line is determined to be a dangerous water level.
delete The method according to claim 1,
Wherein the ultrasonic reflection surface is inclined at an angle of 135 degrees with respect to the longitudinal direction pipe of the sensor guide.
The method according to claim 1,
Wherein the total distance from the movement path of the ultrasonic waves in the sensor guide to the calibration target is longer than the non-detection area distance of the ultrasonic sensor.
The method according to claim 1,
Wherein the measurement surface of the calibration target is positioned inside the sensor guide.
The method according to claim 1,
The second water level measuring apparatus may be one of a buoyancy measuring method and a level switch. When the water level of the first water level measuring apparatus is in the measurement period of the second water level measuring apparatus set to the danger level, The water level of the first water level measuring apparatus is determined to be a true value.

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