CN105736955A - Underground pipe network system monitored on basis of electronic imaging technologies and monitoring method - Google Patents

Underground pipe network system monitored on basis of electronic imaging technologies and monitoring method Download PDF

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CN105736955A
CN105736955A CN201610270806.1A CN201610270806A CN105736955A CN 105736955 A CN105736955 A CN 105736955A CN 201610270806 A CN201610270806 A CN 201610270806A CN 105736955 A CN105736955 A CN 105736955A
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monitoring
central processing
processing unit
underground
electronic imaging
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CN105736955B (en
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谢爱国
谢卫国
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谢爱国
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00Protection or supervision of installations
    • F17D5/02Preventing, monitoring, or locating loss
    • F17D5/06Preventing, monitoring, or locating loss using electric or acoustic means
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/11Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems

Abstract

The invention relates to an underground pipe network system monitored on the basis of electronic imaging technologies and a monitoring method. The underground pipe network system comprises two power supply electrodes, an underground pipe network leakage detecting and blockage measuring data acquisition module, a central processing unit and a transmission system. Underground pipelines can generate currents by the aid of the two power supply electrodes, the central processing unit is arranged in a control room, and the transmission system is communicated with the data acquisition module and the central processing unit; power is supplied for underground environments by the power supply electrodes, the currents are supplied to the underground environments from the positive electrode and then are transmitted back to the negative electrode, and an electric field is formed in an underground monitored region; the data acquisition module acquires physical quantities of nodes of the monitored region by the aid of sensor units, and the central processing unit is provided with a computing module capable of acquiring conductivity distribution of the monitored region and is used for judging whether the pipelines leak or not according to computed conductivity numerical values of the nodes. The underground pipe network system and the monitoring method have the advantages that leakage detection and blockage measurement are combined with each other by the underground pipe network system and the monitoring method, accordingly, the underground pipe network system has functions of increasing measurement information contents and enhancing analysis software, leakage can be efficiently detected in the aspects of detection and prediction, and blockage can be efficiently measured in the aspects of detection and prediction.

Description

Buried Pipeline Network Systems and monitoring method based on electronic imaging technology monitoring
Technical field
The invention belongs to underground pipe network monitoring field, specifically a kind of Buried Pipeline Network Systems based on electronic imaging technology monitoring and monitoring method.
Background technology
Along with Chinese industrial and the modern development of science and technology, the level of urbanization improves year by year, 2010, and the urbanization rate of China has reached 46.6%, it is contemplated that the year two thousand twenty will between 55% to 60%.Now, the underground pipe network carrying in cities and towns, pressure-bearing load sharply increase, and all kinds of accidents enter the high-incidence season, and the economic loss caused is huge, and therefore, it is extremely urgent that docking built by old network renovation and new net.
Currently, the classification of the detection technique of underground pipe network, direct Detection Method and indirect detection method can be divided into.Wherein, direct Detection Method is that the material that pipe leakage is gone out detects, and mainly has: leak detection cables systems approach, conduction high polymer leak detecting, tracer detection method and optical fiber Leak Detection method etc..The phenomenon that indirect detection method produces when being to leakage detects, and mainly has: pressure wave leak detecting, hydraulic slope collimation method, mass balance approach, statistic decision method, harmony KLR signal approach etc..Due to the complexity of underground pipe network, the method that any of the above is single is all difficult to meet actual job requirement, and the difficulty particularly with prediction and early warning is bigger.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Buried Pipeline Network Systems based on electronic imaging technology monitoring and monitoring method thereof, this system and method will hunt leak and survey bridging and close, have and strengthen the quantity of information measured and promote the function analyzing software, in detection and prediction, efficiently leak detection can be realized and survey stifled.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
A kind of Buried Pipeline Network Systems based on electronic imaging technology monitoring, makes underground piping produce two current electrodes of electric current, underground pipe network leak detection and survey stifled data acquisition module, the central processing unit being arranged in control room and the transmission system communicated with described data acquisition module and central processing unit;
Described current electrode is powered to underground, and electric current feeds underground from positive pole and returns negative pole, forms an electric field in monitored area, underground;Described data acquisition module gathers the physical quantity of monitored area node by sensor unit, described central processing unit is provided with and can obtain the computing module of conductance distribution in monitored area, conductance numerical value for obtaining egress according to computing judges whether pipe leakage, and the working strategy in described computing module includes:
▿ · R - 1 ▿ V = f
Wherein boundary condition: have V=V for small boundary areas0
R - 1 ∂ V / ∂ n = J 0
In formula: V is the electric potential energy function detecting region in pipeline;
R-1For pipeline detects the conductance in region;
Laplacian;
V0The electric potential energy function of boundary point;
J0The conduction current density of boundary point;
N is the carrier number in unit volume.
The measurement pipeline object of the present invention is metallic conduit, and owing to the electric conductivity of metallic conduit is good, electric current is had " attraction " to act on by it, makes the abnormal distribution of electric current density.When leakage occurs pipeline, the voltage that the sensor on pipeline receives can change, can locating leaks point according to the change of this characteristic signal.Can judge whether to block according to the change numerical value of change voltage simultaneously.
Wherein, described sensor unit include can to the electric current of monitoring node, voltage measurement sensor.
In further preferred version, described sensor unit is located on pipeline border and/or in duct wall.
Also can realizing in the further improvement project of the present invention, described computing module also includes the operational equation of electrical conductivity, and described central processing unit is additionally operable to calculate electric conductivity value by the variable-current magnitude of voltage monitored according to Ohm's law;Determine electrical conductivity by the electrode constant relevant to pipeline configuration, according to medium standards Conductivity Ratio pair, infer respective substance..
In one preferred version of the transmission system of the present invention, described transmission system includes being located at the wireless transmitter of pipeline outer wall, Area Node device and detection signal switcher, described detection signal switcher receives the signal of wireless transmitter the data transmission of realization and described central processing unit by Area Node device.
For making the voltage data of monitoring more intuitively show, described central processing unit is provided with software interface, described software interface is for showing the conductance data of the node through computing module computing, and passes through the high-low pressure situation of the color comparison reacting pipe of fluid cross-section figure.
Another aspect of the present invention additionally provides the monitoring method of a kind of Buried Pipeline Network Systems based on electronic imaging technology monitoring, sequentially includes the following steps:
Step one, underground piping monitored area in multiple spot arrange and include the sensor unit of electric current, voltage parameter, arrange current electrode on ground and make underground form an electric field;
Step 2, central processing unit obtain, by transmission system, the physical quantity that data acquisition module obtains each sensor unit of node;
Step 3, central processing unit obtain the conductance data of monitoring node through conductance computing module computing, and the change according to conductance data judges whether pipeline is revealed;
Step 4, central processing unit are by reflecting the color comparison of conductance data figure in software interface;
Step 5, memory module Coutinuous store real-time online data and graph data.
In wherein said step 3, the calculating process of computing module includes following equation computing:
▿ · R - 1 ▿ V = f
Wherein boundary condition: have V=V for small boundary areas0
R - 1 ∂ V / ∂ n = J 0
Further, in described step 3 software interface, the color comparison of figure is particularly as follows: the fluid cross-section that figure is pipeline constructs, and in fluid cross-section figure, corresponding site shows high voltage region and low-voltage area with different colours, is simultaneously provided with color adaptation key and respectively high voltage region and low-voltage area is adjusted.
Further, described detection method also includes step 3, described central processing unit and calculates the concrete numerical value of electrical conductivity of monitoring node always according to electrical conductivity operational equation, thus inferring respective substance.
The method have the advantages that
1. the present invention is based on electronic imaging technology, can obtain a large amount of electrical signal datas of real-time online, it is adaptable to heterogeneous fluid (can be used for turbidity fluid), solve a difficult problem for optical means.The signal of telecommunication that the present invention obtains is converted to digital signal by our software, can be used for long-distance transmissions.
2. the present invention need not add any foreign substance, decreases running cost and difficulty.The present invention has significantly high reliability, is suitable for long-term real time on-line monitoring.
3. leak detection and survey bridging can be closed by the present invention by hardware and software, improve prediction and pre-alerting ability, and this is that traditional method is irrealizable.
4. present invention application efficient signal analyzes software, and the output result obtained has visuality directly perceived, is conducive to relevant Decision and corresponding arrangement and method for construction.
5. sensor of the invention has motility, can be used for border formula and built-in, and size dimension is also dependent on practical situation adjustment.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of Buried Pipeline Network Systems of the present invention;
Fig. 2 is the structural representation of another embodiment of Buried Pipeline Network Systems of the present invention;
Fig. 3 is the schematic diagram of a kind of embodiment of the figure of software interface in Buried Pipeline Network Systems of the present invention.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label indicates same or similar element.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention is not enough for existing methods based on the monitoring Buried Pipeline Network Systems of electronic imaging technology, strengthens the quantity of information measured and promotes the function analyzing software, in detection and prediction, can realize efficiently leak detection and survey stifled.
Fig. 1 illustrates the embodiment of a kind of Buried Pipeline Network Systems based on electronic imaging technology monitoring of the present invention, and described Buried Pipeline Network Systems includes: make underground piping produce two current electrodes of electric current, underground pipe network leak detection and survey stifled data acquisition module 1, the central processing unit 2 being arranged in control room and the transmission system 3 communicated with described data acquisition module 1 and central processing unit 2.
Described current electrode is powered to underground, and electric current feeds underground from positive pole and returns negative pole, forms an electric field in monitored area, underground;Described data acquisition module 1 gathers the physical quantity of monitored area node by sensor unit 10, described central processing unit 2 is provided with and can obtain the computing module of conductance distribution in monitored area, conductance numerical value for obtaining egress according to computing judges whether pipe leakage, and the working strategy in this computing module described includes:
▿ · R - 1 ▿ V = f
Wherein boundary condition: have V=V for small boundary areas0
R - 1 ∂ V / ∂ n = J 0
In formula: V is the electric potential energy function detecting region in pipeline;
R-1For pipeline detects the conductance in region;
Laplacian;
V0The electric potential energy function of boundary point;
J0The conduction current density of boundary point;
N is the carrier number in unit volume.
The sensor unit 10 includes can to the sensor of the electric current of monitored area node, electric current measurement.
Sensor of the invention unit 10 can manufacture two schemes: border formula and built-in.Single or integration scenario can be selected according to the practical situation of underground pipe network, described sensor unit is located on pipeline border and/or in duct wall.
Also can realizing in the further improvement project of the present invention, described computing module also includes the operational equation of electrical conductivity, and described central processing unit is additionally operable to calculate the concrete numerical value of electrical conductivity of monitoring node according to electrical conductivity operational equation, thus inferring respective substance.Concrete, calculate electric conductivity value by the variable-current magnitude of voltage monitored according to Ohm's law;Electrical conductivity is determined by the electrode constant relevant to pipeline configuration.According to dielectric conductance rate comparison, infer respective substance, by that analogy, the calculating to multiple node conductance and conductivity values, associate out tie substance distribution.
Fig. 2 illustrates another embodiment of Buried Pipeline Network Systems of the present invention, except the scheme identical with above-mentioned technical scheme, described transmission system 3 includes being located at the wireless transmitter of pipeline outer wall, Area Node device 31 and detection signal switcher 32, described detection signal switcher 32 receives the signal of wireless transmitter the data transmission of realization and described central processing unit 2 by Area Node device 31.
Being provided with software interface in the central processing unit 2 of the present invention, described software interface is for showing the voltage data of the destination node through computing module computing, and passes through the high-low pressure situation of graphic color comparison reacting pipe.In one embodiment, electronic imaging content for fluid cross-section includes software interface, software interface includes fluid cross-section figure, one group of voltage data figure and color adaptation key, fluid cross-section figure is as shown in Figure 3, in figure 4, distribution has high voltage region a and low-voltage area b high, is carried out voltage zone a and the contrast of low-voltage area b by different colours.The monitoring method of a kind of Buried Pipeline Network Systems based on electronic imaging technology monitoring of the present invention, sequentially includes the following steps:
Step one, underground piping monitored area in multiple spot arrange and include the sensor unit (10) of electric current, voltage parameter, arrange current electrode on ground and make underground form an electric field;
Step 2, central processing unit 2 obtain, by transmission system 3, the physical quantity that data acquisition module 1 obtains each sensor unit 10 of node;
Step 3, central processing unit 2 obtain the conductance data of monitoring node through conductance computing module computing, and the change according to conductance data judges whether pipeline is revealed;
Step 4, central processing unit 2 are by reflecting the color comparison of conductance data figure in software interface;
Step 5, memory module Coutinuous store real-time online data and graph data.
Wherein, in described step 3, the calculating process of computing module includes following equation computing:
▿ · R - 1 ▿ V = f
Wherein boundary condition: have V=V for small boundary areas0
R - 1 ∂ V / ∂ n = J 0
In formula, symbol is shown in the embodiment of above-mentioned Buried Pipeline Network Systems.
In described step 3 software interface, the color comparison of figure is particularly as follows: the fluid cross-section that figure is pipeline constructs, and in fluid cross-section figure, corresponding site shows high voltage region and low-voltage area with different colours, is simultaneously provided with color adaptation key and respectively high voltage region and low-voltage area is adjusted;This view intuitively can help expert and engineering staff to improve prediction and pre-alerting ability.
Described detection method also includes central processing unit 2 described in step and calculates the concrete numerical value of electrical conductivity of monitoring node always according to electrical conductivity operational equation, thus inferring respective substance.

Claims (10)

1. the Buried Pipeline Network Systems based on electronic imaging technology monitoring, it is characterized in that, described Buried Pipeline Network Systems includes: make underground piping produce two current electrodes of electric current, underground pipe network leak detection and survey stifled data acquisition module (1), the central processing unit (2) being arranged in control room and the transmission system (3) communicated with described data acquisition module (1) and central processing unit (2);
Described current electrode is powered to underground, and electric current feeds underground from positive pole and returns negative pole, forms an electric field in monitored area, underground;Described data acquisition module (1) gathers the physical quantity of monitored area node by sensor unit (10), described central processing unit (2) is provided with and can obtain the computing module of conductance distribution in monitored area, conductance numerical value for obtaining egress according to computing judges whether pipe leakage, and in described computing module, the working strategy of conductance includes:
▿ · R - 1 ▿ V = f
Wherein boundary condition: small boundary areas is had
In formula: V is the electric potential energy function detecting region in pipeline;
R-1For pipeline detects the conductance in region;
Laplacian;
V0Boundary electric potentials energy function;
J0Border conduction current density;
N is the carrier number in unit volume.
2. the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 1, it is characterised in that described sensor unit (10) includes can to the sensor of the electric current of node, voltage measurement.
3. the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 2, it is characterised in that described sensor unit (10) is located on pipeline border and/or in duct wall.
4. the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 1, it is characterized in that, described computing module is additionally operable to calculate electrical conductivity, and described central processing unit (2) is additionally operable to calculate electric conductivity value by the variable-current magnitude of voltage monitored according to Ohm's law;Determine electrical conductivity by the electrode constant relevant to pipeline configuration, according to medium standards Conductivity Ratio pair, infer respective substance.
5. the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 1, it is characterized in that, described transmission system (3) includes being located at the wireless transmitter of pipeline outer wall, Area Node device (31) and detection signal switcher (32), described detection signal switcher (32) receives the signal of wireless transmitter the data transmission of realization and described central processing unit (2) by Area Node device (31).
6. the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 1, it is characterized in that, described central processing unit is provided with software interface in (2), described software interface is for showing the conductance data of the node through computing module computing, and passes through the high-low pressure situation of the color comparison reacting pipe of fluid cross-section figure.
7., based on a monitoring method for the Buried Pipeline Network Systems of electronic imaging technology monitoring, sequentially include the following steps:
Step one, underground piping monitored area in multiple spot arrange and include the sensor unit (10) of electric current, voltage parameter, arrange current electrode on ground and make underground form an electric field;
Step 2, central processing unit (2) obtain, by transmission system (3), the physical quantity that data acquisition module (1) obtains each sensor unit (10) of node;
Step 3, central processing unit (2) obtain the conductance data of monitoring node through conductance computing module computing, and the change according to conductance data judges whether pipeline is revealed;
Step 4, central processing unit (2) are by reflecting the color comparison of conductance data figure in software interface;
Step 5, memory module Coutinuous store real-time online data and graph data.
8. the monitoring method of the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 7, it is characterised in that in described step 3, the calculating process of computing module includes following equation computing:
▿ · R - 1 ▿ V = f
Wherein boundary condition: small boundary areas is had
In formula: V is the electric potential energy function detecting region in pipeline;
R-1For pipeline detects the conductance in region;
Laplacian;
V0The electric potential energy function of boundary point;
J0The conduction current density of boundary point;
N is the carrier number in unit volume.
9. the monitoring method of the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 7, it is characterized in that, in described step 3 software interface, the color comparison of figure is particularly as follows: the fluid cross-section that figure is pipeline constructs, and in fluid cross-section figure, corresponding position different colours shows high voltage region and low-voltage area, is simultaneously provided with color adaptation key and respectively high voltage region and low-voltage area is adjusted.
10. the monitoring method of the Buried Pipeline Network Systems based on electronic imaging technology monitoring as claimed in claim 7, it is characterized in that, described detection method also includes step 3, described central processing unit (2) and calculates the concrete numerical value of electrical conductivity of monitoring node always according to electrical conductivity operational equation, thus inferring respective substance.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045257A1 (en) * 1980-12-01 1982-06-03 Friedhelm Schmitz CONTROL SYSTEM FOR LEAK DETECTING PIPELINES
CN1936414A (en) * 2006-08-12 2007-03-28 陈宜中 Non-conductive material water-supply pipeline leak-detection method
CN101344217A (en) * 2008-08-28 2009-01-14 中国石油大学(北京) Apparatus and method for measuring earth induction current and pipe-to-soil potential of buried pipe
CN201892608U (en) * 2009-12-11 2011-07-06 天华化工机械及自动化研究设计院 Acid leakage monitoring device in acid producing industry
CN102155628A (en) * 2010-12-01 2011-08-17 广西大学 Underground drainage pipeline leakage detection method and device
CN104197205A (en) * 2014-09-17 2014-12-10 太原理工大学 Pipe network blocking detecting device
CN104266087A (en) * 2014-10-08 2015-01-07 西安科技大学 In-ground type tap water pipeline leak detection device and detection method
CN105114821A (en) * 2015-10-19 2015-12-02 叶雷 Detection method for leakage of buried metal pipeline

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045257A1 (en) * 1980-12-01 1982-06-03 Friedhelm Schmitz CONTROL SYSTEM FOR LEAK DETECTING PIPELINES
CN1936414A (en) * 2006-08-12 2007-03-28 陈宜中 Non-conductive material water-supply pipeline leak-detection method
CN101344217A (en) * 2008-08-28 2009-01-14 中国石油大学(北京) Apparatus and method for measuring earth induction current and pipe-to-soil potential of buried pipe
CN201892608U (en) * 2009-12-11 2011-07-06 天华化工机械及自动化研究设计院 Acid leakage monitoring device in acid producing industry
CN102155628A (en) * 2010-12-01 2011-08-17 广西大学 Underground drainage pipeline leakage detection method and device
CN104197205A (en) * 2014-09-17 2014-12-10 太原理工大学 Pipe network blocking detecting device
CN104266087A (en) * 2014-10-08 2015-01-07 西安科技大学 In-ground type tap water pipeline leak detection device and detection method
CN105114821A (en) * 2015-10-19 2015-12-02 叶雷 Detection method for leakage of buried metal pipeline

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