CN112503403B - Underground pipe network leakage monitoring and positioning system and method - Google Patents
Underground pipe network leakage monitoring and positioning system and method Download PDFInfo
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- 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
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- 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
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Abstract
The invention discloses an underground pipe network leakage monitoring and positioning system which is applied to an underground pipe network and comprises a detection unit arranged along the pipe network, wherein the detection unit is electrically connected with an underground relay; the underground relays are communicated with each other by wireless; the underground relay is electrically connected with the communication node; the communication node is in wireless connection with an overground relay; the above-ground relay is electrically connected with the server, and the server is electrically connected with the monitoring end. The invention provides a method for monitoring and positioning leakage of an underground pipe network. And locates the position where the leak occurs by the detection unit ID of the detection unit. The invention can communicate in the deeply buried soil layer, send out the measured dielectric constant value, judge whether leakage occurs according to weather information and the dielectric constant value, and has more accurate detection structure.
Description
Technical Field
The invention relates to the technical field of monitoring and positioning of pipeline leakage, in particular to a system and a method for monitoring and positioning leakage of an underground pipe network.
Background
With the development of urban design, a large number of pipelines for serving residents are paved under the ground of a city in the urban planning and construction process.
The maintenance of pipelines is an important process of urban management, and besides the periodic replacement of pipelines reaching the service life, the maintenance of pipelines is also required to replace pipelines with leakage. The replacement of the leaked pipeline needs to find out that the pipeline leaks in time, and the leakage can be positioned in time. In the prior art, the leakage position is positioned by detecting the negative pressure wave caused by leakage, generally, two groups of pressure sensors are arranged on a pipeline, the specific position of the leakage on the pipeline is determined by utilizing the time difference of the negative pressure waves acquired by the two pressure sensors, however, in the mode, sometimes, the leakage degree is small, the pressure sensors cannot capture the generated negative pressure wave, and the pipeline leakage cannot be detected. Over time, leaks can cause problems such as contamination of the medium in the pipeline, contamination of the leaking environment, changes in the leaking land structure, and so forth.
Disclosure of Invention
In order to solve the above problems, the present invention provides an underground pipe network leakage monitoring and positioning system, which is applied to a pipe network and comprises a detection unit arranged along the pipe network, wherein,
the detection unit is electrically connected with the underground relay;
the underground relays are communicated with each other by wireless; the underground relay is electrically connected with the communication node;
the communication node is in wireless connection with an overground relay;
the above-ground relay is electrically connected with the server, and the server is electrically connected with the monitoring end.
Preferably, the detection unit comprises a detection capacitor arranged in soil, the detection capacitor is electrically connected with a resistor R2, a resistor R3 and a first power supply module in sequence, a VCC pin and a RST pin of a 555 timer are connected with the first power supply module, a THR and a TRI pin of the 555 timer are electrically connected between the detection capacitor and the resistor R2, a DIS pin of the 555 timer is electrically connected between the resistor R1 and the resistor R2, a CON pin of the 555 timer is connected with a capacitor C1, an OUT pin of the 555 timer is electrically connected with a first control module, the first control module is electrically connected with the first power supply module, and the first control module is electrically connected with the underground relay.
Preferably, the underground relay comprises a second control module, the second control module is electrically connected with the first control module, the second control module is electrically connected with a first magnetic induction communication module, and the first magnetic induction communication module is electrically connected with a first coil; the underground relay is provided with a second power supply module for supplying power.
Preferably, the communication node includes a third control module, the third control module is electrically connected to the second magnetic induction communication module, the second magnetic induction communication module is electrically connected to the second coil, the third control module is electrically connected to the first wireless communication module, and the communication node is configured with a third power supply module for supplying power.
Preferably, the above-ground relay comprises a second wireless communication module which is wirelessly connected with the first wireless communication module, the second wireless communication module is electrically connected with a fourth control module, the fourth control module is electrically connected with a GPRS communication module, the GPRS communication module is wirelessly connected with the server, and the above-ground relay is configured with a fourth power supply module.
The invention also discloses a method for monitoring and positioning the leakage of the underground pipe network, which comprises the following steps of
The server acquires a detection unit ID detected by a detection unit and a dielectric constant value measured by the detection unit ID according to a set period, and sequentially adds the dielectric constant values to an input matrix according to the detection unit ID;
the monitoring end obtains an input matrix and performs normalization processing on the input matrix;
the monitoring end acquires local weather information from the server, and determines whether leakage occurs or not according to the weather information and an input analysis model of the input matrix of the normalization processing;
the monitoring end obtains a detection unit ID at the position of the input matrix by utilizing the dielectric constant value with leakage;
and the monitoring end acquires the position information of the leakage according to the detection unit ID.
Preferably, the weather information comprises precipitation, temperature and humidity, and the server is connected with a local weather information acquisition interface through a network to acquire the weather information in real time.
Preferably, the underground relay connected to the detection unit periodically communicates with the detection unit, and acquires a corresponding dielectric constant value and detection unit ID from the detection unit;
the underground relay transmits the dielectric constant value and the detection unit ID through other underground relays through magnetic induction communication and finally sends the dielectric constant value and the detection unit ID to a communication node;
the communication node sends the dielectric constant value and the detection unit ID to an above-ground relay via wireless communication, which sends the dielectric constant value and the detection unit ID to a server via GPRS communication.
Preferably, the analysis model is a BP neural network model trained with leak identification.
The underground pipe network leakage monitoring and positioning system has the following advantages:
the invention provides an underground pipe network leakage monitoring and positioning system which utilizes the principle that the dielectric constant of soil can be changed when a medium in a leakage pipe network flows into the nearby soil; the dielectric constant value of soil near the pipe network is detected through the detection unit and is transmitted to the underground relay, the underground relays are matched with each other to send the dielectric constant value and the detection unit ID of the detection unit to the communication node, the communication node sends the dielectric constant value to the server through the above-ground relay, and the monitoring end analyzes the dielectric constant value by using an analysis model to judge whether leakage occurs. The invention uses the underground relay to forward the dielectric constant value and the detection unit ID to the communication node one by one, and the underground relay uses the magnetic signal to send the dielectric constant value and the detection unit ID, thereby solving the problem of shielding the electromagnetic signal by the soil when the electromagnetic signal communication is adopted conventionally. The invention realizes large-scale networking by utilizing the communication node, the ground relay and the server, and is suitable for the condition of large-scale pipeline laying. According to the invention, the influence of meteorological information on the dielectric constant of soil is considered, so that the analysis result is more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for monitoring and locating leakage of a subterranean pipe network in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of connection of a detection unit, an underground relay and a communication node of an underground pipe network leakage monitoring and positioning system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a detection unit in an embodiment of the invention;
FIG. 4 is a schematic diagram of a 555 timer and a detection capacitor of a detection unit in an embodiment of the present invention;
FIG. 5 is a schematic diagram of an underground relay in an embodiment of the invention;
FIG. 6 is a schematic diagram of a communication node in an embodiment of the invention;
fig. 7 is a schematic diagram of an above-ground relay in an embodiment of the invention.
Reference numerals and meanings in the drawings: 1. the device comprises a detection unit, 11, a detection capacitor, 12, 555 timers, 13, a first control module, 14, a first power supply module, 2, an underground relay, 21, a second control module, 22, a first magnetic induction communication module, 23, a first coil, 24, a second power supply module, 3, a communication node, 31, a third control module, 32, a second magnetic induction communication module, 33, a second coil, 34, a first wireless communication module, 4, an above-ground relay, 41, a second wireless communication module, 42, a fourth control module, 43, a GPRS communication module, 44, a fourth power supply module, 5, a server, 6 and a monitoring end.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention will be described with reference to the accompanying drawings, wherein fig. 1 is a schematic diagram of a system for monitoring and positioning leakage of a underground pipe network according to an embodiment of the present invention; FIG. 2 is a schematic diagram of connection of a detection unit, an underground relay and a communication node of an underground pipe network leakage monitoring and positioning system according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a detection unit in an embodiment of the invention; FIG. 4 is a schematic diagram of a 555 timer and a detection capacitor of a detection unit in an embodiment of the present invention; FIG. 5 is a schematic diagram of an underground relay in an embodiment of the invention; FIG. 6 is a schematic diagram of a communication node in an embodiment of the invention; fig. 7 is a schematic diagram of an above-ground relay in an embodiment of the invention.
Referring to fig. 1 and 2 in combination, the present invention provides a leakage monitoring and positioning system for an underground pipe network, which is applied to a pipe network, and includes a detection unit 1 disposed along the pipe network, in a specific implementation process, referring to fig. 3 and 4 in combination, the detection unit 1 includes a detection capacitor 11 disposed in soil, one plate of the detection capacitor 11 is electrically connected to a resistor R2, a resistor R3 and a first power supply module 14 in sequence, a VCC pin and a RST pin of a 555 timer 12 are connected to the first power supply module 14, a THR and a TRI pin of the 555 timer 12 are electrically connected between the detection capacitor 11 and the resistor R2, a DIS pin of the 555 timer 12 is electrically connected between the resistor R1 and the resistor R2, a CON pin of the 555 timer 12 is connected to a capacitor C1, an OUT pin of the 555 timer is electrically connected to a first control module 13, and the first power supply module 14 is electrically connected to the 555 timer 12 and the first control module 13. When leakage occurs and the moisture content of the soil changes, the dielectric constant changes, the capacitance value of the detection capacitor 11 changes, the output frequency of the 555 timer changes due to the change of the capacitance value of the detection capacitor 11, the first control module 13 counts the output signal frequency of the 555 timer, and the dielectric constant value of the soil is determined according to the frequency change.
The detection unit 1 is electrically connected with the underground relay 2; the first control module 13 is electrically connected to the underground relay 2. Transmitting, by the first control module 13, the measured dielectric constant value to the underground relay 2; referring to fig. 5 specifically, the underground relay 2 includes a second control module 21, the first control module 13 is connected to the second control module 21 through a bus for transmitting the dielectric constant value and the detection unit ID of the detection unit 1, the second control module 21 is electrically connected to a first magnetic induction communication module 22, and the first magnetic induction communication module 22 is electrically connected to a first coil 23; the underground relay is configured with a second power module 24 for supplying power. The first magnetic induction communication module generates different currents according to the transmitted data, so that the first coil 23 generates different magnetic signals, the change of the magnetic signals is captured by the first coil of another underground relay, corresponding induction currents are generated, the data information to be transmitted is carried by the change of the induction currents, the underground signal transmission is realized, and finally the underground relay 2 close to the communication node 3 is electrically connected with the communication node 3.
In the implementation process, referring to fig. 6, the communication node 3 includes a third control module 31, the third control module 31 is electrically connected to the second magnetic induction communication module 32, the second magnetic induction communication module 32 is electrically connected to the second coil 33, the second coil 33 and the second magnetic induction communication module 32 are in magnetic induction communication with the underground relay 2, the third control module 31 is electrically connected to the first wireless communication module 34, the communication node 3 is configured with a third power supply module 35 for supplying power, the third control module 31 is configured with a wireless communication protocol, one possible wireless communication protocol is lora, zigbee, nbiot wireless communication protocol, and the third control module 31 is wirelessly connected to the underground relay 4 through the first wireless communication module 34.
In the implementation process, referring to fig. 7, the above-ground relay 4 includes a second wireless communication module 41 wirelessly connected to the first wireless communication module 34, the second wireless communication module 41 is electrically connected to a fourth control module 42, the fourth control module 42 is electrically connected to a GPRS communication module 43, the GPRS communication module 43 is wirelessly connected to the server 5, and the above-ground relay 4 is configured with a fourth power supply module 44. The above-ground relay 4 enables communication between the communication node 3 and the server 5. The above-ground relay 4 communicates with the communication node 3 through lora, zigbee, nbiot. The above-ground relay 4 communicates with the server 5 through GPRS, and the server 5 is electrically connected with the monitoring terminal 6 through a network.
The invention provides a method for monitoring and positioning leakage of an underground pipe network, which comprises the following steps of
The server acquires a detection unit ID detected by a detection unit and a dielectric constant value measured by the detection unit ID according to a set period, and sequentially adds the dielectric constant values to an input matrix according to the detection unit ID; in the implementation process, the underground relay connected with the detection unit periodically communicates with the detection unit, and obtains a corresponding dielectric constant value and a detection unit ID from the detection unit; the underground relay transmits the dielectric constant value and the detection unit ID through other underground relays through magnetic induction communication and finally sends the dielectric constant value and the detection unit ID to a communication node; the communication node sends the dielectric constant value and the detection unit ID to an above-ground relay via wireless communication, which sends the dielectric constant value and the detection unit ID to a server via GPRS communication.
The monitoring end obtains the input matrix from the server and performs normalization processing on the input matrix;
the monitoring end acquires local weather information from a server, the weather information comprises precipitation, temperature and humidity, and the server is connected with a local weather information acquisition interface through a network to acquire the weather information in real time.
The monitoring end determines whether leakage occurs or not according to the meteorological information and an input analysis model of the input matrix of the normalization processing; the analysis model is a BP neural network model trained by leakage identification.
The BP neural network comprises an input layer, a hidden layer and an output layer; and acquiring dielectric constant values detected by the detection unit under various precipitation conditions to train the BP neural network. The weights and thresholds between the input layer and the hidden layer are randomly initialized, and the weights and thresholds between the hidden layer and the output layer are randomly initialized. Setting a training target (the training target is an error rate threshold value), and learning a rate R (the learning rate is used for updating weights and threshold values, wherein the weight W between an input layer and a hidden layer 1 ＝W 1 +R×dW 1 Threshold B between input layer and hidden layer 1 ＝B 1 +R×dB 1 Weight W between hidden layer and output layer 2 ＝W 2 +R×dW 2 Threshold B between hidden layer and output layer 2 ＝B 2 +R×dB 2 ) And (5) maximum learning times, and stopping learning to form the BP neural network model for analyzing whether leakage exists if the training target is reached within the maximum learning times.
The monitoring end obtains a detection unit ID at the position of the input matrix by utilizing the dielectric constant value with leakage;
and the monitoring end acquires the position information of the leakage according to the detection unit ID.
The invention provides an underground pipe network leakage monitoring and positioning system which utilizes the principle that the dielectric constant of soil can be changed when a medium in a leakage pipe network flows into the nearby soil; the dielectric constant value of soil near the pipe network is detected through the detection unit and is transmitted to the underground relay, the underground relays are matched with each other to send the dielectric constant value and the detection unit ID of the detection unit to the communication node, the communication node sends the dielectric constant value to the server through the above-ground relay, and the monitoring end analyzes the dielectric constant value by using an analysis model to judge whether leakage occurs. The invention uses the underground relay to forward the dielectric constant value and the detection unit ID to the communication node one by one, and the underground relay uses the magnetic signal to send the dielectric constant value and the detection unit ID, thereby solving the problem of shielding the electromagnetic signal by the soil when the electromagnetic signal communication is adopted conventionally. The invention realizes large-scale networking by utilizing the communication node, the ground relay and the server, and is suitable for the condition of large-scale pipeline laying. According to the invention, the influence of meteorological information on the dielectric constant of soil is considered, so that the analysis result is more accurate.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. An underground pipe network leakage monitoring and positioning method applied to an underground pipe network is characterized by comprising the following steps:
setting a detection unit along the pipe network, periodically communicating with the detection unit by an underground relay connected with the detection unit, and acquiring a corresponding dielectric constant value and a detection unit ID from the detection unit;
the underground relay includes: the second control module is electrically connected with the detection unit, and is electrically connected with the first magnetic induction communication module which is electrically connected with the first coil; the underground relay transmits the dielectric constant value and the detection unit ID through other underground relays through magnetic induction communication and finally sends the dielectric constant value and the detection unit ID to a communication node;
the communication node transmits the dielectric constant value and the detection unit ID to an above-ground relay via wireless communication, and the above-ground relay transmits the dielectric constant value and the detection unit ID to a server via GPRS communication;
the server acquires a detection unit ID of a detection unit and a dielectric constant value measured by the detection unit ID according to a set period, and sequentially adds the dielectric constant values to an input matrix according to the detection unit ID;
the monitoring end obtains an input matrix and performs normalization processing on the input matrix;
the monitoring end acquires local weather information from the server, and determines whether leakage occurs or not according to the weather information and an input analysis model of the input matrix of the normalization processing;
the monitoring end obtains a detection unit ID at the position of the input matrix by utilizing the dielectric constant value with leakage;
and the monitoring end acquires the position information of the leakage according to the detection unit ID.
2. The method for monitoring and locating leakage of underground pipe network according to claim 1, wherein the weather information comprises precipitation, temperature and humidity, and the server is connected to a local weather information acquisition interface through a network to acquire the weather information in real time.
3. The method for monitoring and positioning leakage of underground pipe network according to claim 1, wherein the analysis model is a BP neural network model trained by leakage identification.
4. The underground pipe network leakage monitoring and positioning method according to claim 1, wherein the detection unit comprises a detection capacitor arranged in soil, the detection capacitor is electrically connected with a resistor R2, a resistor R3 and a first power supply module in sequence, a VCC pin of a 555 timer is connected with the first power supply module, THR and TRI pins of the 555 timer are electrically connected between the detection capacitor and the resistor R2, a DIS pin of the 555 timer is electrically connected between the resistor R1 and the resistor R2, a CON pin of the 555 timer is connected with a capacitor C1, an OUT pin of the 555 timer is electrically connected with a first control module, the first control module is electrically connected with the first power supply module, and the first control module is electrically connected with the underground relay.
5. The underground utility network leak monitoring and locating method of claim 1, wherein the communication node comprises: the third control module is electrically connected with the second magnetic induction communication module of the underground relay magnetic induction communication, the second magnetic induction communication module is electrically connected with the second coil, the third control module is electrically connected with the first wireless communication module, and the communication node is provided with a third power supply module for supplying power.
6. The method for monitoring and locating a leak in an underground pipe network according to claim 5, wherein the above-ground relay comprises: the second wireless communication module is in wireless connection with the first wireless communication module, the second wireless communication module is electrically connected with the fourth control module, the fourth control module is electrically connected with the GPRS communication module, the GPRS communication module is in wireless connection with the server, and the on-ground relay is configured with the fourth power supply module.
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| CN114659036A (en) * | 2022-03-23 | 2022-06-24 | 江西省共青城润泉供水有限公司 | Distributed tap water pipe network loss monitoring system and method |
| CN118757700B (en) * | 2024-09-06 | 2024-11-12 | 中国石油大学(华东) | A patrol voltage matrix corrosion monitoring system |
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| DE1922986C3 (en) * | 1969-05-06 | 1975-09-18 | Erdoel-Raffinerie Mannheim Gmbh, 6800 Mannheim | Procedure for monitoring leaks in liquid lines |
| JP2003004519A (en) * | 2001-06-20 | 2003-01-08 | Tokyo Gas Co Ltd | Monitoring system for preventing damage to buried pipes |
| CN102748588B (en) * | 2011-04-22 | 2016-06-01 | 郝彤 | A kind of underground piping monitoring method |
| CN203202640U (en) * | 2013-03-18 | 2013-09-18 | 王平 | Remote gas pipeline leakage detecting system based on wireless sensing network |
| CN204206315U (en) * | 2014-09-02 | 2015-03-11 | 广东长虹电子有限公司 | A moisture-proof TV |
| CN105627100A (en) * | 2015-12-29 | 2016-06-01 | 安徽海兴泰瑞智能科技有限公司 | Underground gas pipe network leakage monitoring system |
| CN107883198A (en) * | 2017-11-07 | 2018-04-06 | 中国石油大学(华东) | A kind of oil-gas pipeline weld leakage monitoring device |
| CN108591834A (en) * | 2017-11-20 | 2018-09-28 | 北京无线电计量测试研究所 | A kind of pepe monitoring system |
| CN109190828A (en) * | 2018-09-07 | 2019-01-11 | 苏州大学 | Gas leakage concentration distribution determines method, apparatus, equipment and readable storage medium storing program for executing |
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