CN105387352A - High-sensitivity water delivery pipeline leakage monitoring system and method - Google Patents
High-sensitivity water delivery pipeline leakage monitoring system and method Download PDFInfo
- Publication number
- CN105387352A CN105387352A CN201510928882.2A CN201510928882A CN105387352A CN 105387352 A CN105387352 A CN 105387352A CN 201510928882 A CN201510928882 A CN 201510928882A CN 105387352 A CN105387352 A CN 105387352A
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- resistance
- circuit module
- multiplier
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000000739 chaotic effect Effects 0.000 claims abstract description 52
- 238000006880 cross-coupling reaction Methods 0.000 claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 9
- 230000035945 sensitivity Effects 0.000 claims description 22
- 239000012266 salt solution Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000010587 phase diagram Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a high-sensitivity water delivery pipeline leakage monitoring system and method. The system comprises a power supply module, a chaotic circuit module, a water monitoring sensor and a display module; and the power supply module, the water monitoring sensor and the display module are connected with the chaotic circuit module. The method comprises the following steps: (1) generating a chaotic system with a cross-coupling term by using the chaotic circuit module; (2) creating turbulence on the cross-coupling term of the chaotic system by using electrical signals generated by a sensor circuit module of the chaotic circuit module to cause orbital transition of chaotic attractors; and (3) monitoring leakage of a water delivery pipeline by using the water monitoring sensor, and judging conditions of leakage of the water delivery pipeline according to chaotic attractor orbits displayed by the display module. The water delivery pipeline leakage monitoring system is not limited by pipeline materials or mounting environments, and judges rapidly whether leakage exists or not according to change of the attractors; the size of a leaking part of the pipeline is recognized by a salt water monitoring technology in an assisted manner; and the high-sensitivity water delivery pipeline leakage monitoring system is simple in structure and easy to use.
Description
Technical field
The present invention relates to signal monitoring field, be specifically related to a kind of high sensitivity water transport pipeline leakage monitoring system and method, utilize chaology to carry out water transport pipeline leakage monitoring.
Background technique
Pipe-line system plays a part very important in water resources course of conveying, but pipeline there will be multi-form fault in long-term use, as water hammer and valve vibration etc. in pipeline crackle, corrosive pipeline, piping coupled vibrations, pipe.In order to ensure industrial normal development, the monitoring of pipeline leakage fault becomes the problem of people's growing interest.For these problems, some solutions are proposed at present.Pipeline non-destructive monitoring technology, as endoscopic method, infrared monitoring method, x-ray analysis, magnetic monitoring, eddy current monitoring, supersonic guide-wave pipeline monitoring method, subsequently based on acoustic emission technique and the monitoring being widely used in pipe-line system based on monitoring method, the wavelet transformation monitoring method of vibration.But, along with the extensive application of new material in pipeline and the variation of pipeline installation form, as the installation of pipeline elastic support, seabed sea bed lays installation and city pipe-line system provided underground is buried, and traditional pipeline monitoring method is faced with new challenges.The good monitoring instrument of some performances in metal tubes seems unable to do what one wishes in new material and nonmetal pipeline, even cannot monitor out obvious crack fault; Some are laid the pipeline being imbedded in underground and then lack effective monitoring method.As can be seen here, in engineering reality in the urgent need to taking new method to realize the leakage monitoring of pipeline.
When utilizing chaology to carry out pipeline leakage monitoring, traditional viewpoint is thought: when the parameter of nonlinear system is in chaotic parameter region scope, system presents chaotic behavior, and now system is responsive to initial conditions.But this receptance needs could embody through the evolution of certain hour usually, thus chaos is caused to lack real-time and validity to the monitoring capability of abnormal signal; In addition, because system just has sensitivity to the change of initial conditions, therefore needing to monitor abnormal signal by constantly changing initial conditions, in specific construction practice process, then corresponding to following operation: constantly " startup-switch " circuit makes system run under different initial conditions.This operation, one is the long-time running being unfavorable for system; Two is monitoring inefficiencies.Therefore, these thinkings intuitively, to get sth into one's head, hinder and apply the science of chaos.
Summary of the invention
The technical problem to be solved in the present invention is, for existing pipeline leakage monitoring above shortcomings, provide a kind of high sensitivity water transport pipeline leakage monitoring system and method thereof, system is not by the restriction of piping material, installation environment, according to the change of attractor, judge rapidly the existence of leaking; The auxiliary size using salt solution monitoring technology identification pipeline leakage.
The present invention for solving the problems of the technologies described above adopted technological scheme is:
A kind of high sensitivity water transport pipeline leakage monitoring system, comprises supply module, chaos circuit module, moisture monitoring sensor and display modular, described supply module, moisture monitoring sensor and display modular all with chaos circuit model calling; Described supply module is used for for chaos circuit module for power supply; Described chaos circuit module is for generation of the chaos system with cross-couplings item, and the chaotic attractor that this chaos system produces is exported to display modular, sensor circuit module is also provided with in chaos circuit module, sensor circuit module for generation of the electrical signal of cross-couplings item affecting chaos system, the chaotic attractor track acute variation generation track transition that chaos system is produced; Described moisture monitoring sensor is used for when monitoring water transport pipeline and occurring to leak, and the electrical signal utilizing sensor circuit module to produce is on the impact of chaotic attractor, and the leakage of state to water transport pipeline according to chaotic attractor is monitored; The chaotic attractor track that described display modular produces for showing described chaos system.
By such scheme, the chaos system that described chaos circuit module produces is the three multiple coupled nonlinear systems in rank.
By such scheme, described chaos circuit module comprises sensing unit circuit module, parameter regulating circuit module and sensor circuit module:
Described sensing unit circuit module comprises the 3rd operational amplifier OP3, four-operational amplifier OP4, the 5th operational amplifier OP5 and the first multiplier U2; The inverting input of described 3rd operational amplifier OP3 is connected to the pin 7 of multiplier U2 by resistance R16, the in-phase input end ground connection of the 3rd operational amplifier OP3, the output terminal of the 3rd operational amplifier OP3 is connected with the inverting input of operational amplifier OP3 by resistance R7, is connected with the inverting input of four-operational amplifier OP4 by resistance R5; The inverting input of described four-operational amplifier OP4 is connected with the pin 1 of the first multiplier U2 by resistance R15, is connected with slide rheostat Rv by resistance R17, the in-phase input end ground connection of four-operational amplifier OP4 is also connected with the in-phase input end of the 5th operational amplifier OP5, and the output terminal of four-operational amplifier OP4 is connected with the inverting input of four-operational amplifier OP4 by resistance R8, is connected with the inverting input of the 5th operational amplifier OP5 by resistance R6; The inverting input of described 5th operational amplifier OP5 is connected with the output terminal of the 5th operational amplifier OP5 by electric capacity C2; The pin 2 of described first multiplier U2, pin 4, pin 6 ground connection;
Described parameter regulating circuit module comprises the 6th operational amplifier OP6, the 7th operational amplifier OP7, the 8th operational amplifier OP8, the 9th operational amplifier OP9 and the second multiplier U3; The inverting input of described 6th operational amplifier OP6 is connected with the pin 3 of the second multiplier U3 by resistance R13, the in-phase input end ground connection of operational amplifier OP6 is also connected with the in-phase input end of operational amplifier OP7, and the output terminal of the 6th operational amplifier OP6 is connected with the inverting input of the 6th operational amplifier OP6 by resistance R21, is connected with the inverting input of the 7th operational amplifier OP7 by resistance R9; The inverting input of the 7th operational amplifier OP7 is connected with the pin 1 of the second multiplier U3 by resistance R18, and the output terminal of the 7th operational amplifier OP7 is connected with the inverting input of the 7th operational amplifier OP7 by slide rheostat Rv; The inverting input of described 8th operational amplifier OP8 is connected with the pin 7 of the second multiplier U3 by resistance R10, the in-phase input end of the 8th operational amplifier OP8 is by resistance R20 ground connection, and the output terminal of the 8th operational amplifier OP8 is connected with the inverting input of the 8th operational amplifier OP8 by resistance R11, is connected with the inverting input of the 9th operational amplifier OP9 by resistance R12; The in-phase input end ground connection of the 9th operational amplifier OP9, the output terminal of the 9th operational amplifier OP9 is connected with the inverting input of the 9th operational amplifier OP9 by electric capacity C3, is connected with the in-phase input end of the 8th operational amplifier OP8 by resistance R19; The pin 2 of described second multiplier U3, pin 4, pin 6 ground connection;
Described sensitive circuit unit module is connected with parameter regulating circuit module, be specially: the pin 1 of described first multiplier U2 is connected with the pin 1 of the second multiplier U3, the pin 3 of described first multiplier U2 is connected with the in-phase input end of the 8th operational amplifier OP8 by resistance R19, the pin 3 of the first multiplier U2 is connected with the output terminal of the 9th operational amplifier OP9 simultaneously, and the pin 3 of described second multiplier U3 is connected with the output terminal of the 5th operational amplifier OP5;
Described sensor circuit module comprises the first operational amplifier OP1 and the second operational amplifier OP2, the inverting input of described first operational amplifier OP1 is connected with the pin 3 of the second multiplier U3 by resistance R2, the in-phase input end of the first operational amplifier OP1 passes through the pin 1 of resistance R3 and the first multiplier U2, the output terminal of the second operational amplifier OP2 and one end of resistance R15 connect, the in-phase input end of the first operational amplifier OP1 is also by resistance R14 ground connection, the other end of described resistance R15 is connected with the inverting input of four-operational amplifier OP4, the output terminal of the first operational amplifier OP1 is connected with the inverting input of the first operational amplifier OP1 by resistance R4, the inverting input of described second operational amplifier OP2 is connected with the output terminal of operational amplifier OP1 by resistance R1, the in-phase output end ground connection of the second operational amplifier OP2, the output terminal of the second operational amplifier OP2 is connected with the inverting input of the second operational amplifier OP2 by electric capacity C1,
Described moisture monitoring sensor adopts resistance detection module Rw, and one end of resistance detection module Rw is connected with the output terminal of described second operational amplifier OP2, the other end ground connection.
By such scheme, described supply module comprises the power supply V1 be in series, power supply V2, power supply V1, power supply V2 is whole chaos circuit module for power supply, the J1 of first to the 9th operational amplifier OP1 ~ OP9, J2 end connects the J1 of supply module respectively, J2 holds, first multiplier U2, the pin 8 of the second multiplier U3 is connected to the J1 end of power module, first multiplier U2, the pin 5 of the second multiplier U3 is connected to the J2 end of power module, the output port VF1 of the second operational amplifier OP2, the output port VF2 of the 5th operational amplifier OP5 is two output ports of chaos circuit module, the chaotic attractor that chaos circuit module produces is from output port VF1, output port VF2 is linked into display modular.
By such scheme, described moisture monitoring sensor comprises liquid-permeable layers and two electrodes, and described two electrodes are connected with liquid-permeable layers two ends respectively, and described liquid-permeable layers is insulator.
By such scheme, described liquid-permeable layers is foam body.
Present invention also offers a kind of monitoring method of above-mentioned high sensitivity water transport pipeline leakage monitoring system, comprise the steps:
1) produce by chaos circuit module the chaos system that has cross-couplings item;
2) electrical signal utilizing the sensor circuit module of chaos circuit module to produce produces disturbance to the cross-couplings item of chaos system, causes the track transition of chaotic attractor;
3) display modular display chaotic attractor track, moisture monitoring sensor is monitored according to the leakage of the state of chaotic attractor to water transport pipeline, judges that the situation of leaking occurs water transport pipeline.
By such scheme, described step 3) in, during the leakage monitoring of moisture monitoring sensor to water transport pipeline, also comprise step: in the liquid-permeable layers of moisture monitoring sensor, add salt solution, further the size of monitoring pipeline leakage.
Working principle of the present invention: utilize chaology to carry out water transport pipeline leakage monitoring, find that the dynamic behavior of chaos system has absolute dependence and receptance to the cross-couplings item in system, the disturbance of cross-couplings item produces huge change by the behavior of system, the chaotic attractor of system is caused to produce track transition, there is acute variation, thus can monitor signal according to the state of chaotic attractor.
The present invention is owing to have employed technique scheme, and tool has the following advantages:
1, high sensitivity pipeline leakage monitoring system is first in the three multiple coupled chaos systems in rank, its dynamic behavior has absolute dependence to cross-couplings item and this great discovery of receptance is applied, this great discovery breaches initial conditions receptance restriction in conventional thought, not utilize chaos to this feature of the receptance of initial conditions with copying mechanically and applying indiscriminately, but make use of Nonlinear and crossing item and have attractor track and affect this new discovery significantly, thus make not need start of frequently shutting down in observation process, but after start, directly enter state to be monitored, ensure the permanently effective operation of monitoring system, breach Traditional Thinking when utilizing chaos system to carry out signal monitoring, for the monitoring of chaos to weak signal opens new direction,
2, chaos circuit produces the chaos system with cross-couplings item, and devise sensor circuit module and simple and practical moisture monitoring sensor, this high sensitivity pipeline leakage monitoring system is made to be easy to realize, not by the restriction of piping material, installation environment; Simple to operate, identify succinct, according to the change of attractor, the existence of leaking can be judged rapidly; Auxiliary use salt solution monitoring technology, namely can identify the size of pipeline leakage, be suitable for applying in engineering reality.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of high sensitivity water transport pipeline leakage monitoring system of the present invention;
Fig. 2 is the sensing unit circuit figure in Fig. 1 in chaos circuit module;
Fig. 3 is the parameter regulating circuit module circuit diagram in Fig. 1 in chaos circuit module;
Fig. 4 is the sensor circuit module circuit diagram in Fig. 1 in chaos circuit module;
Fig. 5 is the integrated circuit figure of chaos circuit module in Fig. 1;
Fig. 6 is the equivalent circuit diagram of sensor circuit modular circuit;
Fig. 7 is the equivalent circuit output characteristic curve figure of sensor circuit modular circuit;
Fig. 8 is the structural representation of moisture monitoring sensor in Fig. 1;
Fig. 9 is embodiment of the present invention high sensitivity water transport pipeline leakage monitoring system chaotic attractor reset condition figure;
Figure 10 is the phase diagram of chaotic attractor after moisture monitoring sensor instillation 0.5ml water in embodiment;
Figure 11 is the phase diagram of chaotic attractor after moisture monitoring sensor instillation 1.0ml water in embodiment;
Figure 12 is the phase diagram of chaotic attractor after moisture monitoring sensor instillation 1.5ml water in embodiment;
Figure 13 is the phase diagram of chaotic attractor after water transport pipeline instillation 0.5ml salt solution in embodiment;
Figure 14 is the phase diagram of chaotic attractor after water transport pipeline instillation 0.8ml salt solution in embodiment.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.
With reference to shown in Fig. 1, high sensitivity water transport pipeline leakage monitoring system of the present invention, comprise supply module 1, chaos circuit module 2, moisture monitoring sensor 3 and display modular 4, supply module 1, moisture monitoring sensor 3 are all connected with chaos circuit module 2 with display modular 4; Supply module 1 is for powering for chaos circuit module 2; Chaos circuit module 2 is for generation of the chaos system with cross-couplings item, and the chaotic attractor that this chaos system produces is exported to display modular 4, sensor circuit module is also provided with in chaos circuit module 2, sensor circuit module for generation of the electrical signal of cross-couplings item affecting chaos system, the chaotic attractor track acute variation generation track transition that chaos system is produced; Moisture monitoring sensor 3 is for when monitoring water transport pipeline and occurring to leak, and the electrical signal utilizing sensor circuit module to produce is on the impact of chaotic attractor, and the leakage of state to water transport pipeline according to chaotic attractor is monitored; The chaotic attractor track that display modular 4 produces for showing chaos system.
With reference to shown in Fig. 2 ~ Fig. 5, chaos circuit module 2 comprises sensing unit circuit module, parameter regulating circuit module and sensor circuit module, and the chaos system that chaos circuit module 2 produces is the three multiple coupled nonlinear systems in rank:
Fig. 2 is sensing unit circuit figure, and sensing unit circuit module comprises the 3rd operational amplifier OP3, four-operational amplifier OP4, the 5th operational amplifier OP5 and the first multiplier U2; The inverting input of the 3rd operational amplifier OP3 is connected to the pin 7 of multiplier U2 by resistance R16, the in-phase input end ground connection of the 3rd operational amplifier OP3, the output terminal of the 3rd operational amplifier OP3 is connected with the inverting input of operational amplifier OP3 by resistance R7, is connected with the inverting input of four-operational amplifier OP4 by resistance R5; The inverting input of four-operational amplifier OP4 is connected with the pin 1 of the first multiplier U2 by resistance R15, is connected with slide rheostat Rv by resistance R17, the in-phase input end ground connection of four-operational amplifier OP4 is also connected with the in-phase input end of the 5th operational amplifier OP5, and the output terminal of four-operational amplifier OP4 is connected with the inverting input of four-operational amplifier OP4 by resistance R8, is connected with the inverting input of the 5th operational amplifier OP5 by resistance R6; The inverting input of the 5th operational amplifier OP5 is connected with the output terminal of the 5th operational amplifier OP5 by electric capacity C2; The pin 2 of the first multiplier U2, pin 4, pin 6 ground connection;
Fig. 3 is parameter regulating circuit module circuit diagram, and parameter regulating circuit module comprises the 6th operational amplifier OP6, the 7th operational amplifier OP7, the 8th operational amplifier OP8, the 9th operational amplifier OP9 and the second multiplier U3; The inverting input of the 6th operational amplifier OP6 is connected with the pin 3 of the second multiplier U3 by resistance R13, the in-phase input end ground connection of operational amplifier OP6 is also connected with the in-phase input end of operational amplifier OP7, and the output terminal of the 6th operational amplifier OP6 is connected with the inverting input of the 6th operational amplifier OP6 by resistance R21, is connected with the inverting input of the 7th operational amplifier OP7 by resistance R9; The inverting input of the 7th operational amplifier OP7 is connected with the pin 1 of the second multiplier U3 by resistance R18, and the output terminal of the 7th operational amplifier OP7 is connected with the inverting input of the 7th operational amplifier OP7 by slide rheostat Rv; The inverting input of the 8th operational amplifier OP8 is connected with the pin 7 of the second multiplier U3 by resistance R10, the in-phase input end of the 8th operational amplifier OP8 is by resistance R20 ground connection, and the output terminal of the 8th operational amplifier OP8 is connected with the inverting input of the 8th operational amplifier OP8 by resistance R11, is connected with the inverting input of the 9th operational amplifier OP9 by resistance R12; The in-phase input end ground connection of the 9th operational amplifier OP9, the output terminal of the 9th operational amplifier OP9 is connected with the inverting input of the 9th operational amplifier OP9 by electric capacity C3, is connected with the in-phase input end of the 8th operational amplifier OP8 by resistance R19; The pin 2 of the second multiplier U3, pin 4, pin 6 ground connection;
Sensitive circuit unit module is connected with parameter regulating circuit module, be specially: the pin 1 of the first multiplier U2 is connected with the pin 1 of the second multiplier U3, the pin 3 of the first multiplier U2 is connected with the in-phase input end of the 8th operational amplifier OP8 by resistance R19, the pin 3 of the first multiplier U2 is connected with the output terminal of the 9th operational amplifier OP9 simultaneously, and the pin 3 of the second multiplier U3 is connected with the output terminal of the 5th operational amplifier OP5;
Fig. 4 is sensor circuit module circuit diagram, and Fig. 5 is chaos circuit module whole circuit diagram after the access of sensor circuit module.Sensor circuit module comprises the first operational amplifier OP1 and the second operational amplifier OP2, the inverting input of the first operational amplifier OP1 is connected with the pin 3 of the second multiplier U3 by resistance R2, the in-phase input end of the first operational amplifier OP1 passes through the pin 1 of resistance R3 and the first multiplier U2, the output terminal of the second operational amplifier OP2 and one end of resistance R15 connect, the in-phase input end of the first operational amplifier OP1 is also by resistance R14 ground connection, the other end of resistance R15 is connected with the inverting input of four-operational amplifier OP4, the output terminal of the first operational amplifier OP1 is connected with the inverting input of the first operational amplifier OP1 by resistance R4, the inverting input of the second operational amplifier OP2 is connected with the output terminal of operational amplifier OP1 by resistance R1, the in-phase output end ground connection of the second operational amplifier OP2, the output terminal of the second operational amplifier OP2 is connected with the inverting input of the second operational amplifier OP2 by electric capacity C1, moisture monitoring sensor 3 adopts resistance detection module Rw, and one end of resistance detection module Rw is connected with the output terminal of the second operational amplifier OP2, the other end ground connection.
Supply module 1 comprises the power supply V1 be in series, power supply V2, power supply V1, power supply V2 is that whole chaos circuit module 2 is powered, the J1 of first to the 9th operational amplifier OP1 ~ OP9, J2 end connects the J1 of supply module 1 respectively, J2 holds, first multiplier U2, the pin 8 of the second multiplier U3 is connected to the J1 end of power module, first multiplier U2, the pin 5 of the second multiplier U3 is connected to the J2 end of power module, the output port VF1 of the second operational amplifier OP2, the output port VF2 of the 5th operational amplifier OP5 is two output ports of chaos circuit module 2, the chaotic attractor that chaos circuit module 2 produces is from output port VF1, output port VF2 is linked into display modular 4.
Be following three rank many cross-couplings nonlinear systems according to the chaos system that above-mentioned chaos circuit module 2 obtains:
U in formula (2)
1u
3for the cross-couplings item of chaos system (when the parameter of system is in certain limit, will occur chaotic behavior, and therefore, have the characteristic to initial conditions sensitivity, can find by analysis, due to cross-couplings item u
1u
3nonlinear interaction, when little change occurs parameter, system can cause huge change, and this is the design considerations of leakage monitoring system sensing unit circuit module).
Fig. 8 is the schematic diagram of the moisture monitoring sensor 3 that the present embodiment provides; moisture monitoring sensor 3 comprises liquid-permeable layers 31 and two electrode A, electrode B; two electrode A, electrode B are connected with the naked signaling line 32 at liquid-permeable layers 31 two ends respectively; liquid-permeable layers 31 is insulator; outside is provided with waterproof protecting layer 33, and in the present embodiment, liquid-permeable layers 31 is preferably foam body.
When pipeline is normal, due to the insulating properties of liquid-permeable layers, electrode A, B two ends disconnect, and export any signal; When occurring leaking, water leakage will enter liquid-permeable layers, due to the electric conductivity of water, thus conduction electrode A, B two ends, make the change occurring electric properties in circuit, when this moisture monitoring sensor is connected with chaos circuit module, this minor alteration, will be monitored by chaos circuit, when sensing unit circuit module in chaos circuit receives this faint change, the response generation acute variation of system, can judge rapidly that leaking appears in pipeline thus.
Particularly, Rv is slide rheostat, and sliding contact is placed in 2.77k Ω position.Electric capacity: C1=C2=C3=10 μ F, each operational amplifier model is as μ A741 (totally 9); First multiplier U2, the second multiplier U3 model are: NEWMARCO.Power supply V1, V2 are ± 15V.Concrete component parameter is as shown in table 1.
Table 1 components and parts inventory and parameter value
| Title | Parameter value | Title | Parameter value | Title | Parameter value |
| R1 | 0.98kΩ | R8 | 5.8kΩ | R15 | 10.25kΩ |
| R2 | 9.65kΩ | R9 | 99.5kΩ | R16 | 9.57kΩ |
| R3 | 9.98kΩ | R10 | 9.55kΩ | R17 | 5.48kΩ |
| R4 | 1.0kΩ | R11 | 3.89kΩ | R18 | 1.1kΩ |
| R5 | 8.7kΩ | R12 | 0.98kΩ | R19 | 6.02kΩ |
| R6 | 0.98kΩ | R13 | 9.73kΩ | R20 | 0.98kΩ |
| R7 | 3.89kΩ | R14 | 0.98kΩ | R21 | 9.73kΩ |
Designed sensor circuit modular circuit is equivalent to Fig. 6 analyze, when being input as 4V, if Rw is infinitely great, output Vo is 8V; Rw changes from small to large, and its curve of output as shown in Figure 7.Therefore, the principle of leakage monitoring is: when not occurring to leak, Rw trends towards infinity, and the response of circuit can not change; When occurring to leak, due to the electric conductivity of water, Rw being reduced, thus the output of circuit is changed., thus the chaotic attractor that chaos circuit module is produced produces track transition.
Display modular described in the present embodiment is oscillograph.VF1, VF2 in chaos circuit two ports are linked on BNC connector, then are connected with oscillograph by BNC connector.Chaotic attractor reset condition figure when Fig. 9 is high sensitivity water transport pipeline leakage monitoring system energising in the present embodiment.
Water is progressively instilled on moisture monitoring sensor.Because cavernous structure has water absorbing properties.Therefore, the parameter generation minor alteration of circuit, due to the receptance of chaos, will there is significantly change in attractor.
After can finding out that moisture enters moisture monitoring sensor from Figure 10-Figure 12, owing to changing the parameter in chaos circuit module, sensing unit circuit module acknowledge(ment) signal, chaotic attractor changes rapidly, monitoring velocity is fast, chaotic attractor structure increases, for engineering actual monitoring provides obvious recognition feature.
The monitoring method of the present embodiment high sensitivity water transport pipeline leakage monitoring system, comprises the steps:
1) produce by chaos circuit module 2 chaos system that has cross-couplings item;
2) electrical signal utilizing the sensor circuit module of chaos circuit module 2 to produce produces disturbance to the cross-couplings item of chaos system, causes the track transition of chaotic attractor;
3) display modular 4 shows the chaotic attractor track that chaos system produces, salt solution is added in the foam body (water transport pipeline) of moisture monitoring sensor 3, moisture monitoring sensor 3 is monitored according to the leakage of the state of chaotic attractor to water transport pipeline, judge that the situation of leaking occurs water transport pipeline, and monitor the size of pipeline leakage further.
Known from the analysis of Fig. 6 and Fig. 7, when adding salt in water transport pipeline, the electric conductivity of salt solution is good, and Rw trends towards 0, and output terminal is similar to ground connection, and attractor therefore can be caused to cave in.Can differentiate thus and leak due to extraneous rainwater or pipeline itself causes.
In conjunction with Figure 13, Figure 14, can know that after instillation 0.5ml salt solution, chaotic attractor diminishes rapidly in the foam body (liquid-permeable layers 31) of moisture monitoring sensor 3, instill 0.8ml salt solution in the foam body of moisture monitoring sensor 3 after, chaotic attractor caves in rapidly.Therefore the effect adding salt solution in the liquid-permeable layers 31 (water transport pipeline) of moisture monitoring sensor 3 has two: i, in some complex engineering, for confirming what whether the leakage of pipeline was caused by external interference such as rainwater actually, or leakage causes, and only needs to add the salt solution that a small amount of salt just can monitor leakage; Ii, the defect size of pipeline can be monitored, if attractor changes rapidly, show that the leakage of pipeline is large.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, be still among protection scope of the present invention according to spirit institute's apparent change of extending out of the present invention or change.
Claims (8)
1. a high sensitivity water transport pipeline leakage monitoring system, it is characterized in that: comprise supply module, chaos circuit module, moisture monitoring sensor and display modular, described supply module, moisture monitoring sensor and display modular all with chaos circuit model calling; Described supply module is used for for chaos circuit module for power supply; Described chaos circuit module is for generation of the chaos system with cross-couplings item, and the chaotic attractor that this chaos system produces is exported to display modular, sensor circuit module is also provided with in chaos circuit module, sensor circuit module for generation of the electrical signal of cross-couplings item affecting chaos system, the chaotic attractor track acute variation generation track transition that chaos system is produced; Described moisture monitoring sensor is used for when monitoring water transport pipeline and occurring to leak, and the electrical signal utilizing sensor circuit module to produce is on the impact of chaotic attractor, and the leakage of state to water transport pipeline according to chaotic attractor is monitored; The chaotic attractor track that described display modular produces for showing described chaos system.
2. according to high sensitivity water transport pipeline leakage monitoring system as claimed in claim 1, it is characterized in that: the chaos system that described chaos circuit module produces is the three multiple coupled nonlinear systems in rank.
3. according to high sensitivity water transport pipeline leakage monitoring system as claimed in claim 1 or 2, it is characterized in that: described chaos circuit module comprises sensing unit circuit module, parameter regulating circuit module and sensor circuit module:
Described sensing unit circuit module comprises the 3rd operational amplifier OP3, four-operational amplifier OP4, the 5th operational amplifier OP5 and the first multiplier U2; The inverting input of described 3rd operational amplifier OP3 is connected to the pin 7 of multiplier U2 by resistance R16, the in-phase input end ground connection of the 3rd operational amplifier OP3, the output terminal of the 3rd operational amplifier OP3 is connected with the inverting input of operational amplifier OP3 by resistance R7, is connected with the inverting input of four-operational amplifier OP4 by resistance R5; The inverting input of described four-operational amplifier OP4 is connected with the pin 1 of the first multiplier U2 by resistance R15, is connected with slide rheostat Rv by resistance R17, the in-phase input end ground connection of four-operational amplifier OP4 is also connected with the in-phase input end of the 5th operational amplifier OP5, and the output terminal of four-operational amplifier OP4 is connected with the inverting input of four-operational amplifier OP4 by resistance R8, is connected with the inverting input of the 5th operational amplifier OP5 by resistance R6; The inverting input of described 5th operational amplifier OP5 is connected with the output terminal of the 5th operational amplifier OP5 by electric capacity C2; The pin 2 of described first multiplier U2, pin 4, pin 6 ground connection;
Described parameter regulating circuit module comprises the 6th operational amplifier OP6, the 7th operational amplifier OP7, the 8th operational amplifier OP8, the 9th operational amplifier OP9 and the second multiplier U3; The inverting input of described 6th operational amplifier OP6 is connected with the pin 3 of the second multiplier U3 by resistance R13, the in-phase input end ground connection of operational amplifier OP6 is also connected with the in-phase input end of operational amplifier OP7, and the output terminal of the 6th operational amplifier OP6 is connected with the inverting input of the 6th operational amplifier OP6 by resistance R21, is connected with the inverting input of the 7th operational amplifier OP7 by resistance R9; The inverting input of the 7th operational amplifier OP7 is connected with the pin 1 of the second multiplier U3 by resistance R18, and the output terminal of the 7th operational amplifier OP7 is connected with the inverting input of the 7th operational amplifier OP7 by slide rheostat Rv; The inverting input of described 8th operational amplifier OP8 is connected with the pin 7 of the second multiplier U3 by resistance R10, the in-phase input end of the 8th operational amplifier OP8 is by resistance R20 ground connection, and the output terminal of the 8th operational amplifier OP8 is connected with the inverting input of the 8th operational amplifier OP8 by resistance R11, is connected with the inverting input of the 9th operational amplifier OP9 by resistance R12; The in-phase input end ground connection of the 9th operational amplifier OP9, the output terminal of the 9th operational amplifier OP9 is connected with the inverting input of the 9th operational amplifier OP9 by electric capacity C3, is connected with the in-phase input end of the 8th operational amplifier OP8 by resistance R19; The pin 2 of described second multiplier U3, pin 4, pin 6 ground connection;
Described sensitive circuit unit module is connected with parameter regulating circuit module, be specially: the pin 1 of described first multiplier U2 is connected with the pin 1 of the second multiplier U3, the pin 3 of described first multiplier U2 is connected with the in-phase input end of the 8th operational amplifier OP8 by resistance R19, the pin 3 of the first multiplier U2 is connected with the output terminal of the 9th operational amplifier OP9 simultaneously, and the pin 3 of described second multiplier U3 is connected with the output terminal of the 5th operational amplifier OP5;
Described sensor circuit module comprises the first operational amplifier OP1 and the second operational amplifier OP2, the inverting input of described first operational amplifier OP1 is connected with the pin 3 of the second multiplier U3 by resistance R2, the in-phase input end of the first operational amplifier OP1 passes through the pin 1 of resistance R3 and the first multiplier U2, the output terminal of the second operational amplifier OP2 and one end of resistance R15 connect, the in-phase input end of the first operational amplifier OP1 is also by resistance R14 ground connection, the other end of described resistance R15 is connected with the inverting input of four-operational amplifier OP4, the output terminal of the first operational amplifier OP1 is connected with the inverting input of the first operational amplifier OP1 by resistance R4, the inverting input of described second operational amplifier OP2 is connected with the output terminal of operational amplifier OP1 by resistance R1, the in-phase output end ground connection of the second operational amplifier OP2, the output terminal of the second operational amplifier OP2 is connected with the inverting input of the second operational amplifier OP2 by electric capacity C1,
Described moisture monitoring sensor adopts resistance detection module Rw, and one end of resistance detection module Rw is connected with the output terminal of described second operational amplifier OP2, the other end ground connection.
4. according to high sensitivity water transport pipeline leakage monitoring system as claimed in claim 3, it is characterized in that: described supply module comprises the power supply V1 be in series, power supply V2, power supply V1, power supply V2 is whole chaos circuit module for power supply, the J1 of first to the 9th operational amplifier OP1 ~ OP9, J2 end connects the J1 of supply module respectively, J2 holds, first multiplier U2, the pin 8 of the second multiplier U3 is connected to the J1 end of power module, first multiplier U2, the pin 5 of the second multiplier U3 is connected to the J2 end of power module, the output port VF1 of the second operational amplifier OP2, the output port VF2 of the 5th operational amplifier OP5 is two output ports of chaos circuit module, the chaotic attractor that chaos circuit module produces is from output port VF1, output port VF2 is linked into display modular.
5. according to high sensitivity water transport pipeline leakage monitoring system as claimed in claim 1, it is characterized in that: described moisture monitoring sensor comprises liquid-permeable layers and two electrodes, described two electrodes are connected with liquid-permeable layers two ends respectively, and described liquid-permeable layers is insulator.
6. according to high sensitivity water transport pipeline leakage monitoring system as claimed in claim 5, it is characterized in that: described liquid-permeable layers is foam body.
7. a monitoring method for one of any described high sensitivity water transport pipeline leakage monitoring system of claim 1 ~ 6, is characterized in that: comprise the steps:
1) produce by chaos circuit module the chaos system that has cross-couplings item;
2) electrical signal utilizing the sensor circuit module of chaos circuit module to produce produces disturbance to the cross-couplings item of chaos system, causes the track transition of chaotic attractor;
3) display modular display chaotic attractor track, moisture monitoring sensor is monitored according to the leakage of the state of chaotic attractor to water transport pipeline, judges that the situation of leaking occurs water transport pipeline.
8. the monitoring method of high sensitivity water transport pipeline leakage monitoring system according to claim 7, it is characterized in that: described step 3) in, during the leakage monitoring of moisture monitoring sensor to water transport pipeline, also comprise step: in the liquid-permeable layers of moisture monitoring sensor, add salt solution, further the size of monitoring pipeline leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928882.2A CN105387352B (en) | 2015-12-14 | 2015-12-14 | High-sensitivity water delivery pipeline leakage monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928882.2A CN105387352B (en) | 2015-12-14 | 2015-12-14 | High-sensitivity water delivery pipeline leakage monitoring system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387352A true CN105387352A (en) | 2016-03-09 |
| CN105387352B CN105387352B (en) | 2017-01-25 |
Family
ID=55419934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510928882.2A Expired - Fee Related CN105387352B (en) | 2015-12-14 | 2015-12-14 | High-sensitivity water delivery pipeline leakage monitoring system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105387352B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063582A (en) * | 2016-12-30 | 2017-08-18 | 天津市誉航润铭科技发展有限公司 | A kind of aqueduct leakage monitoring sensor |
| CN108458254A (en) * | 2018-03-13 | 2018-08-28 | 湖北精瑞通流体控制技术有限公司 | Chaos system harmonic response pipeline monitors system |
| CN116054786A (en) * | 2023-03-28 | 2023-05-02 | 南京信息工程大学 | Simplified Jerk-like amplitude-adjustable frequency-modulated chaotic oscillator and regulation and control method thereof |
| CN117771404A (en) * | 2024-02-28 | 2024-03-29 | 山东格贝森医疗科技有限公司 | Endoscope self-cleaning disinfection and leakage detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012913A (en) * | 2007-02-06 | 2007-08-08 | 东北大学 | Chaos analysis and micro-processor based conduit pipe micro-leakage diagnosing method and device |
| US20130066568A1 (en) * | 2010-04-15 | 2013-03-14 | Julio Roberto Alonso | Integrated system with acoustic technology, mass imbalance and neural network for detecting, locating and quantifying leaks in ducts |
| US20130233081A1 (en) * | 2010-11-15 | 2013-09-12 | The University Of Cincinnati | Embedded or clip-on device for health monitoring of an article |
| CN103322416A (en) * | 2013-06-24 | 2013-09-25 | 东北大学 | Pipeline weak leakage detecting device and detecting method based on fuzzy hyperbolic chaos model |
-
2015
- 2015-12-14 CN CN201510928882.2A patent/CN105387352B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012913A (en) * | 2007-02-06 | 2007-08-08 | 东北大学 | Chaos analysis and micro-processor based conduit pipe micro-leakage diagnosing method and device |
| US20130066568A1 (en) * | 2010-04-15 | 2013-03-14 | Julio Roberto Alonso | Integrated system with acoustic technology, mass imbalance and neural network for detecting, locating and quantifying leaks in ducts |
| US20130233081A1 (en) * | 2010-11-15 | 2013-09-12 | The University Of Cincinnati | Embedded or clip-on device for health monitoring of an article |
| CN103322416A (en) * | 2013-06-24 | 2013-09-25 | 东北大学 | Pipeline weak leakage detecting device and detecting method based on fuzzy hyperbolic chaos model |
Non-Patent Citations (2)
| Title |
|---|
| 吴欣明等: "基于混沌的超声波管道泄漏检测系统研究", 《微计算机信息》 * |
| 潘帅等: "混沌振子在流体输送管道泄漏检测中的应用", 《科学技术与工程》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063582A (en) * | 2016-12-30 | 2017-08-18 | 天津市誉航润铭科技发展有限公司 | A kind of aqueduct leakage monitoring sensor |
| CN108458254A (en) * | 2018-03-13 | 2018-08-28 | 湖北精瑞通流体控制技术有限公司 | Chaos system harmonic response pipeline monitors system |
| CN108458254B (en) * | 2018-03-13 | 2023-11-03 | 湖北精瑞通流体控制技术有限公司 | Harmonic response pipeline monitoring system of chaotic system |
| CN116054786A (en) * | 2023-03-28 | 2023-05-02 | 南京信息工程大学 | Simplified Jerk-like amplitude-adjustable frequency-modulated chaotic oscillator and regulation and control method thereof |
| CN117771404A (en) * | 2024-02-28 | 2024-03-29 | 山东格贝森医疗科技有限公司 | Endoscope self-cleaning disinfection and leakage detection device |
| CN117771404B (en) * | 2024-02-28 | 2024-04-26 | 山东格贝森医疗科技有限公司 | Endoscope self-cleaning disinfection and leakage detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105387352B (en) | 2017-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105387352A (en) | High-sensitivity water delivery pipeline leakage monitoring system and method | |
| CN104532264B (en) | Damage and Evaluation of Cathodic Protection method and device outside a kind of pipeline | |
| CN106015953A (en) | Water feed and drainage pipe as well as leakage detection system and detection method thereof | |
| CN103592529A (en) | Method for evaluating insulation aging of XLPE (cross linked polyethylene) cable based on low-temperature pulse | |
| CN207991706U (en) | Pipeline liquid sensor for measuring temperature | |
| CN105650482A (en) | Liquid conveying pipeline leakage and sewage blocking detection method based on frequency domain | |
| CN106123109A (en) | A kind of pepe monitoring system | |
| CN106641741A (en) | Device and method for detecting damaged point of outer wall corrosion-resistant layer of extra-buried deep pipeline | |
| CN107061999A (en) | A kind of Leak Detection in Oil Pipeline Using device and detection method | |
| CN105627107A (en) | Modal acoustic emission time-frequency locating method adopting single sensor for fluid pipeline | |
| CN105465614A (en) | Water supply and drainage pipe leakage detecting system and method | |
| CN205562129U (en) | Expansion joint equipment in heat supply pipeline | |
| CN101865817B (en) | Sensor and detection method for detecting corrosion of buried metal | |
| CN205560296U (en) | Water supply and drainage pipe leak testing system | |
| CN109580133A (en) | Based on the liquid leakage detection sensor of single electrode friction nanometer power generator and application | |
| CN103528767A (en) | Water leakage position detection device for large area | |
| CN105546357B (en) | A kind of pipeline road leakage monitoring system based on chaology | |
| CN108387324A (en) | Pipeline internal medium temperature measuring transducer | |
| CN111781269A (en) | Metal particle characteristic detection system based on triboelectrification | |
| CN204962303U (en) | Pipe network expansion joint of portable secret heat supply damages test probe | |
| CN206338592U (en) | A kind of device for being used to detect the outer wall anticorrosive coat breaking point of super buried depth underground piping | |
| CN203837649U (en) | Buried oil and gas pipeline potentiometric type pipe and soil relative displacement meter | |
| CN207366505U (en) | A kind of transient electromagnetic defect of pipeline scanning equipment | |
| CN203868703U (en) | Pipeline monitoring system based on meshed optical fiber sensor | |
| CN206321768U (en) | A kind of low voltage motor winding insulation comprehensive monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 |