CN115183160A - Method and equipment for reducing false alarm of pipeline leakage - Google Patents

Method and equipment for reducing false alarm of pipeline leakage Download PDF

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CN115183160A
CN115183160A CN202210865229.6A CN202210865229A CN115183160A CN 115183160 A CN115183160 A CN 115183160A CN 202210865229 A CN202210865229 A CN 202210865229A CN 115183160 A CN115183160 A CN 115183160A
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pipeline
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target
leakage
parameters
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CN115183160B (en
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游东东
蔡毅
夏宇
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Guangdong Lichuang Information Technology Co ltd
Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
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Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
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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
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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
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
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    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract

The invention discloses a method and equipment for reducing false alarm of pipeline leakage, which are used for improving the timeliness and accuracy of monitoring the pipeline leakage. The pipeline comprises a plurality of pipeline sections which are sequentially connected end to end, and the method comprises the following steps: determining a corrosion environment parameter of the current time period based on a resistance parameter, a salt content parameter and a water content parameter of the target pipeline section in the current time period; in response to the fact that the corrosion environment parameters in the current time period are smaller than a first parameter threshold value, obtaining the corrosion environment parameters in each history time period in K1 adjacent history time periods aiming at the target pipeline section, and determining first leakage indication information of the target pipeline section according to the corrosion environment parameters in the current time period and the corrosion environment parameters in each history time period; determining a pipeline leakage degree of the target pipeline section based on the first leakage indication information; the corrosion environment parameter represents the environmental corrosion degree of the soil covering the target pipeline section in the corresponding time period, and the corrosion environment parameter is positively correlated with the environmental corrosion degree.

Description

Method and device for reducing false alarm of pipeline leakage
Technical Field
The invention relates to the technical field of Internet of things, in particular to a method and equipment for reducing false alarm of pipeline leakage.
Background
With the continuous progress of social economy and science and technology, pipeline transmission and cable pipeline laying are being applied in a large quantity, the total length of a pipeline is from hundreds of kilometers to thousands of kilometers, and then the problems of safety protection and leakage inspection and monitoring of the pipeline are becoming more and more important;
the pipeline conveying pressure for conveying gasoline and other substances is too high, the pipeline is buried underground for a long time, the pipeline is easily corroded due to the influence of various adverse factors, and the pipeline is also easily corroded to form leakage accidents due to the defects of construction materials of the oil conveying pipeline, the quality of welding positions during construction welding, hydrothermal stress, misoperation, third-party damage, bad geological and natural environments of the areas where the pipeline is located and other factors; at present, the pipeline is generally inspected safely by a manual inspection mode, but the pipeline transmission distance is long, the oil and gas pipelines are distributed in a criss-cross mode and are easy to damage, the pipeline is damaged when the final specific damaged position of the pipeline is inspected manually, the phenomenon that the transmitted substance leaks can be known, and the inspection work is difficult to perform in places with inconvenient traffic; at present with the artifical mode of patrolling and examining to the pipeline carry out safety investigation, a large amount of manpowers, material resources have not only been wasted, and whether the pipeline that acquires takes place the information that the material leaked untimely, not only seriously influence the normal production of oil gas enterprise, also polluted the environment simultaneously and caused to take place environment and personnel around the leakage point and receive serious threat, consequently how to promote the problem that whether the security monitoring's that leaks to the pipeline timeliness and convenience have become the urgent need of solving.
Disclosure of Invention
The invention provides a method and equipment for reducing false alarm of pipeline leakage, which are at least used for improving timeliness and accuracy of pipeline leakage monitoring.
In a first aspect, a method for reducing false alarm of pipeline leakage provided by an embodiment of the present invention includes that a pipeline includes a plurality of pipeline sections connected end to end in sequence, and the method for reducing false alarm of pipeline leakage includes:
determining a corrosion environment parameter of the current time period based on a resistance parameter, a salt content parameter and a water content parameter of the target pipeline section in the current time period; the corrosion environment parameter represents the environmental corrosion degree of soil covering the target pipeline in a corresponding time period, and the corrosion environment parameter is positively correlated with the environmental corrosion degree; the target pipeline segment is any pipeline segment in the plurality of pipeline segments;
in response to that the corrosion environment parameter of the current time period is smaller than a first parameter threshold value, acquiring the corrosion environment parameter of each history time period in K1 adjacent history time periods aiming at the target pipeline segment, and determining first leakage indication information of the target pipeline segment according to the corrosion environment parameter of the current time period and the corrosion environment parameter of each history time period, wherein K1 is a positive integer;
and determining the pipeline leakage degree of the target pipeline section based on the first leakage indication information.
In the method provided by the embodiment of the application, the environmental corrosion degree (namely, corrosion environment parameter) of the environment of the pipeline section at different time periods can be evaluated through the resistance parameter, the salt content parameter and the water content parameter of the pipeline section at different time periods, and the suspicious degree of leakage of the pipeline section (namely, the leakage degree of the pipeline section) is determined based on the environmental corrosion degree of the environment of the pipeline section at different time periods; the resistance parameter, the salt content parameter and the water content parameter of each pipeline section can be periodically or real-timely obtained through the sensor in the monitoring process, and the suspicious degree of the leakage event of each pipeline section is evaluated periodically or real-timely based on the obtained resistance parameter, the obtained salt content parameter and the obtained water content parameter, so that the timeliness and the convenience of monitoring the leakage of the pipeline are improved, and the accuracy of monitoring the leakage of the pipeline is also improved.
In one possible implementation manner, the determining the corrosive environment parameter of the current time period based on the resistance parameter, the salt content parameter and the water content parameter of the target pipeline section in the current time period includes:
respectively determining a resistance parameter range corresponding to the resistance parameter, a salt content parameter range corresponding to the salt content parameter and a water content parameter range corresponding to the water content parameter; determining the corrosion environment parameter of the current time period according to the determined resistance parameter range, the determined salt content parameter range and the determined water content parameter range; or
And weighting and summing the resistance parameters, the salt content parameters and the water content parameters by using the resistance weight, the salt content weight and the water content weight to obtain the corrosion environment parameters of the current time period.
In one possible implementation manner, the determining, according to the corrosion environment parameter of the current time period and the corrosion environment parameter of each historical time period, first leakage indication information of the target pipeline segment includes:
determining the quantity of various target parameters in M types of target parameters in the corrosion environment parameters of the current time period and the corrosion environment parameters of each historical time period, wherein the numerical ranges of the corrosion environment parameters contained in different types of target parameters in the M types of target parameters are different, and M is an integer greater than 1;
determining first leakage indication information of the target pipeline section according to the quantity of various target parameters and the total quantity of corrosive environment parameters; the total amount of the corrosion environment parameters is the total amount of the corrosion environment parameters of the current time period and the corrosion environment parameters of each historical time period.
In one possible implementation, the M-class target parameters include a first-class target parameter, a second-class target parameter, and a third-class target parameter; the first type of target parameter is a corrosive environment parameter which is greater than or equal to the first parameter threshold value, the second type of target parameter is a corrosive environment parameter which is smaller than the first parameter threshold value and is greater than the second parameter threshold value, the third type of target parameter is a corrosive environment parameter which is smaller than the second parameter threshold value, and the first parameter threshold value is greater than the second parameter threshold value;
the determining the first leakage indication information of the target pipeline section according to the quantity of various target parameters and the total quantity of the parameters of the corrosive environment comprises the following steps:
determining first leakage indication information for the target pipe segment based on the following formula:
Figure 100002_DEST_PATH_IMAGE001
；
g1 is the first leakage indication information, N0 is the total amount of the corrosive environment parameters, and N1, N2 and N3 are the number of the first type target parameters and the number of the second type target parameters respectively; p1, P2 and P3 are first mark value, second mark value and third mark value respectively, first mark value is greater than the second mark value, the second mark value is greater than the third mark value.
In a possible implementation manner, after determining the pipe leakage degree of the target pipe segment based on the first leakage indication information, the method for reducing false alarm of pipe leakage further includes:
in response to the pipe leakage degree being less than a first leakage degree threshold value, determining a pipe damage parameter for the current time period based on reflection time information of the target pipe segment for a detection electromagnetic wave in the current time period, the detection electromagnetic wave comprising an electromagnetic wave transmitted by an electromagnetic wave transceiving device;
determining a pipeline damage parameter of each reference time interval in K2 reference time intervals of the target pipeline segment according to reflection time information of the target pipeline segment for the detection electromagnetic wave, and determining second leakage indication information of the target pipeline segment according to the pipeline damage parameter of the current time interval and the pipeline damage parameter of each reference time interval; the K2 is an integer;
re-determining a pipe leakage level of the target pipe segment based at least on the second leakage indication information.
In a possible implementation manner, the determining, according to the pipe damage parameter of the current time period and the pipe damage parameters of the reference time periods, second leakage indication information of the target pipe segment includes:
determining abnormal damage parameters from the pipeline damage parameters of the current time period and the pipeline damage parameters of each reference time period, wherein the abnormal damage parameters comprise pipeline damage parameters which represent that the reflection time of the target pipeline section for the detection electromagnetic waves is abnormal in the corresponding time period;
and determining the ratio of the number of the abnormal damage parameters to the total number of the pipeline damage parameters as second leakage indication information of the target pipeline section, wherein the total number of the pipeline damage parameters is the total number of the pipeline damage parameters in the current time period and the total number of the pipeline damage parameters in each reference time period.
In a possible implementation manner, after re-determining the pipe leakage degree of the target pipe segment based on at least the second leakage indication information, the method further includes:
in response to that the newly determined pipeline leakage degree is smaller than a second leakage degree threshold value, periodically acquiring a plurality of temperature value sequences of the target pipeline segment by using a temperature-sensing optical fiber with a target time length as a period, wherein each temperature value sequence in the plurality of temperature value sequences comprises temperature values of a plurality of different positions of the target pipeline segment;
determining third leakage indication information of the target pipeline segment according to the temperature value sequences;
re-determining a pipe leakage level of the target pipe segment based at least on the third leakage indication information.
In a possible implementation manner, the determining third leakage indication information of the target pipeline segment according to the plurality of temperature value sequences includes:
determining a temperature value sequence with different temperature values in the temperature values of a plurality of different positions as an abnormal temperature value sequence;
determining a ratio of the number of the abnormal temperature value sequences to a total number of the plurality of temperature value sequences as the third leakage indication information.
In a second aspect, an embodiment of the present invention provides a device for reducing false alarm of pipeline leakage, including a processor and a memory, where the memory is used to store a program executable by the processor, and the processor is used to read the program in the memory and execute the steps of the method according to the first aspect of the present application.
In a third aspect, an embodiment of the present invention further provides a device for reducing false alarm of pipeline leakage, where the pipeline includes multiple pipeline sections connected end to end in sequence; the automatic monitoring device includes:
the first processing unit is used for determining the corrosion environment parameters in the current time period based on the resistance parameters, the salt content parameters and the water content parameters of the target pipeline section in the current time period; the corrosion environment parameter represents the environmental corrosion degree of the soil covering the target pipeline section in a corresponding time period, and the corrosion environment parameter is positively correlated with the environmental corrosion degree; the target pipeline segment is any pipeline segment in the plurality of pipeline segments;
a second processing unit, configured to, in response to that the corrosion environment parameter in the current time interval is smaller than a first parameter threshold, obtain, for the target pipeline segment, a corrosion environment parameter in each of K1 adjacent history time intervals, and determine, according to the corrosion environment parameter in the current time interval and the corrosion environment parameter in each history time interval, first leakage indication information of the target pipeline segment, where K1 is a positive integer;
and the leakage judging unit is used for determining the pipeline leakage degree of the target pipeline section based on the first leakage indication information.
In a fourth aspect, an embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, where the computer program is used to implement the steps of the method in the first aspect when executed by a processor.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings may be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic diagram of a pipeline laying method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sensor arrangement associated with a pipe segment according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pipeline monitoring system for pipeline leaks according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for reducing false alarm of pipeline leakage according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a process for determining priorities of different corrosion environment modes according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a device for reducing false alarm of pipeline leakage according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a device for reducing false alarm of pipeline leakage according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, the term "and/or" describes an association relationship of an associated object, and indicates that three relationships may exist, for example, a and/or B, and may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.
First, some key terms related to the embodiments of the present application will be described:
first leakage indication information: monitoring whether the pipeline leaks to obtain information; the first leakage indication information may include, but is not limited to, at least one of indication information of whether a leakage occurs in the pipeline, pipeline section information of a pipeline section in which a leakage occurs in the pipeline, indication information indicating a degree of leakage of a corresponding pipeline section, pipeline leakage alarm information, and the like.
Environmental corrosion parameters: and characterizing the environmental corrosion degree of the soil covering the corresponding pipeline section in the corresponding time period, wherein the corrosion environmental parameters are positively correlated with the environmental corrosion degree.
The embodiment of the application provides an automatic monitoring method and equipment for pipeline leakage, wherein a first sensor for acquiring resistance parameters, a second sensor for acquiring salt content and a third sensor for acquiring water content parameters are arranged around a plurality of pipeline sections on a pipeline; the first sensor to the third sensor can upload resistance parameters, salt content parameters and water content parameters acquired at different time intervals aiming at each pipeline section to a cloud end, a distributed server end or an internet of things control end; and then the cloud, the distributed server or the control end of the internet of things can determine the corrosion environment parameters representing the environmental corrosion degree of the soil where each pipeline section is located in different time periods based on the received resistance parameters, the received salt content parameters and the received water content parameters, and further determine the pipeline leakage degree of each pipeline section based on the corrosion environment parameters of each pipeline section in different time periods.
Firstly, the laying condition of the pipeline and the corresponding sensor in the embodiment of the application is explained; in the embodiment of the application, the laying path and the length of the whole pipeline are not limited too much, and the technical personnel in the field can set the laying path and the length according to actual requirements; as can be seen from fig. 1 (a), the pipeline may be laid on the ground surface to cover a portion of the pipeline with soil, and also as can be seen from fig. 1 (b), the pipeline may be laid under the ground surface to cover the entire surface of the pipeline except for the inlet and outlet ports with soil.
As an embodiment, in the embodiment of the present application, a whole pipeline may be divided into a plurality of pipeline segments connected end to end in sequence, and for each pipeline segment, a first sensor, a second sensor, and a third sensor associated with the pipeline segment are set in soil covering the pipeline segment; the specific manner of dividing the pipeline into the plurality of pipeline segments is not limited, but the pipeline segments may be divided into N1 pipeline segments with equal distance according to the total length of the pipeline, or the pipeline segments may be divided into N2 pipeline segments with equal distance or non-equal distance according to the total length of the pipeline and the geographical environment of the specific geographical area where the pipeline is laid, for example, for some complicated geographical environments which easily cause pipeline damage, the distance between adjacent pipeline segments may be set to be smaller, and for geographical environments with simple conditions, the distance between adjacent pipeline segments may be set to be larger, and the like; the specific values of N1 and N2 are not limited, and those skilled in the art can set the values according to actual needs.
For ease of understanding, referring to fig. 2, a specific example of a pipeline being equally divided into pipeline sections 1, 2, 3, 4 and 5 is given herein; in actual service, the number of pipeline segments for pipeline division may be hundreds, thousands or even more, and the method provided in the embodiment of the present application is schematically illustrated below by taking the specific pipeline division of fig. 2 as an example.
It should be noted that, in the embodiment of the present application, specific setting positions and setting modes of the first sensor, the second sensor, and the third sensor for acquiring the resistance parameter, the salt content parameter, and the water content parameter of the soil covering each pipeline segment are not limited too much, and only the first sensor, the second sensor, and the third sensor need to be set in the soil covering the pipeline segment; as an embodiment, for each pipe segment, the first sensor, the second sensor and the third sensor may be disposed at positions covering the pipe segment and being at a first preset distance, a second preset distance and a third preset distance from an outer surface of the pipe segment, where the first preset distance, the second preset distance and the third preset distance may be the same or different, such as the first sensor 2-1, the second temperature sensor 2-2 and the third sensor 2-3 disposed in fig. 2 for the pipe segment 2, where specific values of the first preset distance, the second preset distance and the third preset distance are not limited, and those skilled in the art may set according to actual requirements, such as but not limited to, setting the first preset distance, the second preset distance and the third preset distance to any value of 2cm, 5cm, 8cm or 10 cm.
As an embodiment, an application scenario related to the embodiment of the present application is described below:
referring to fig. 3, in the embodiment of the present application, a pipeline monitoring system 300 for pipeline leakage is provided, where the pipeline monitoring system 300 includes a sensor end 310 (such as but not limited to include a first sensor 310-1, a second sensor 310-2, a third sensor 310-3, etc. illustrated in the figure), a cloud end 320 (such as but not limited to include a server 320-1, a server 320-2, etc.), or a distributed server end 330 (such as but not limited to include a server 330-1, a server 330-2, etc.) or an internet of things control end 340; wherein:
the sensor terminal 310 uploads a plurality of parameters (namely, resistance parameters, salt content parameters and water content parameters) acquired for the soil covering the target pipeline segment at each time interval to the cloud terminal 320, the distributed server terminal 330 or the internet of things control terminal 340; and then the cloud 320, the distributed server 330 or the internet of things control terminal 340 executes a method for reducing false alarm of pipeline leakage according to the received multiple parameters, and determines the pipeline leakage degree of the target pipeline section.
As an embodiment, the pipeline monitoring system 300 may further include a user terminal 350 (such as a smart phone or a personal computer) bound by a target user, and after determining the pipeline leakage degree of the target pipeline segment, the cloud 320 or the distributed server 330 may further send the pipeline leakage degree of the target pipeline segment to the user terminal 350, so that the target user can timely know the leakage degree of the target pipeline segment; wherein, the target user can be, but is not limited to, a worker who needs to monitor/inspect the pipeline leakage, and the like.
Further, after the method for reducing the false alarm of the pipeline leakage is executed by taking a plurality of pipeline sections in the whole pipeline as target pipeline sections, the pipeline leakage degree of each pipeline section in the plurality of pipeline sections can be determined, and further, the leakage degree, the alarm level and the like of the whole pipeline are determined based on the pipeline leakage degree of each pipeline section in the plurality of pipeline sections.
It should be noted that the pipeline in the embodiments of the present application may be a pipeline for transporting any one or more of liquid (such as various types of gasoline, etc.) and gas (such as but not limited to including natural gas), and the following is a detailed description of the method provided in the embodiments of the present application for convenience.
As shown in fig. 4, the implementation flow of the automatic monitoring method for pipeline leakage according to the present embodiment is as follows, steps S410 to S430:
step S410, determining a corrosion environment parameter of the current time period based on the resistance parameter, the salt content parameter and the water content parameter of the target pipeline section in the current time period; the corrosion environment parameter represents the environmental corrosion degree of the soil covering the target pipeline section in a corresponding time period, and the corrosion environment parameter is positively correlated with the environmental corrosion degree; the target pipeline segment is any of the plurality of pipeline segments.
As an example, the aforementioned resistance parameter may be, but is not limited to, the resistivity of the soil covering the target pipe segment; the aforementioned salt content may be, but is not limited to, the salt content of the soil covering the target pipe section; the aforementioned water content parameter may be, but is not limited to, the water content of the soil covering the targeted pipe segment.
Step S420, in response to that the corrosion environment parameter of the current time period is smaller than a first parameter threshold, obtaining the corrosion environment parameter of each history time period in K1 adjacent history time periods for the target pipeline segment, and determining first leakage indication information of the target pipeline segment according to the corrosion environment parameter of the current time period and the corrosion environment parameter of each history time period, where K1 is a positive integer.
It should be noted that, in the embodiment of the present application, no limitation is imposed on the specific value of K1, and a person skilled in the art may set the specific value according to actual requirements, for example, when a day (i.e., 24 hours) is regarded as a time period, K1 may be, but is not limited to, a value of 7, 14, 21, 28, or 30, and the like, and a person skilled in the art may set the specific value of K1 according to actual requirements.
Step S430, determining a pipe leakage degree of the target pipe segment based on the first leakage indication information.
As an example, in step S410, a resistance weight, a salt content weight, and a water content weight may be preset based on the corrosion characteristics of the pipeline, so as to distinguish and identify the degree of influence of different parameters on the corrosion of the pipeline; then, in step S410, according to the principle of the following formula (1), the resistance parameter, the salt content parameter and the water content parameter are weighted and summed by using the resistance weight, the salt content weight and the water content weight, so as to obtain the corrosion environment parameter of the target pipeline segment in the current time period;
Figure DEST_PATH_IMAGE002
formula (1);
in the formula (1), R is the resistance parameter,
Figure DEST_PATH_IMAGE003
w is the above water content parameter;
Figure DEST_PATH_IMAGE004
、
Figure DEST_PATH_IMAGE005
and
Figure DEST_PATH_IMAGE006
the weight values are respectively resistance weight, salt content weight and water content weight, the specific setting mode and specific numerical value of the resistance weight, the salt content weight and the water content weight are not limited too much in the embodiment of the application, and the weight values can be set by a person skilled in the art according to actual requirements;
in formula (1), T is identification information of a period, where: when calculating the corrosive environment parameter of the current time interval, T is the identification information of the current time interval,
Figure DEST_PATH_IMAGE007
is a corrosion environment parameter of the current time period; when calculating the corrosive environment parameter of a certain historical period, T is the identification information of the historical period,
Figure 267544DEST_PATH_IMAGE007
is a corrosive environment parameter for the historical period.
As an embodiment, in this embodiment, a plurality of resistance parameter ranges, a plurality of salt content parameter ranges, and a plurality of water content parameter ranges may be preset, and then in step S410, the resistance parameter range corresponding to the resistance parameter, the salt content parameter range corresponding to the salt content parameter, and the water content parameter range corresponding to the water content parameter may be determined respectively; and determining the corrosion environment parameter of the current time period according to the determined resistance parameter range, the determined salt content parameter range and the determined water content parameter range.
For ease of understanding, a specific example is given below in which a plurality of resistance parameter ranges, a plurality of salt content parameter ranges and a plurality of water content parameter ranges are set in advance,
if the resistance parameter is resistivity, 3 resistance parameter ranges of "resistivity less than 20", "resistivity greater than or equal to 20 and resistivity less than 50" and "resistivity greater than or equal to 50" may be set; when the salt content parameter is salt content, 3 salt content parameter ranges of "salt content is less than 0.05", "salt content is greater than or equal to 0.05 and less than 0.75" and "salt content is greater than or equal to 0.75" may be set; when the water content parameter is water content, 3 water content parameter ranges of "water content less than 5", "water content greater than or equal to 5 and water content less than 12", and "water content greater than or equal to 12" may be set.
As an embodiment, the environmental corrosion parameter may include, but is not limited to, B corrosion environment modes, where B is an integer greater than 1, so in this embodiment, mapping relationships among the resistance parameter ranges, the salt content parameter range, the water content parameter range, and the B corrosion environment modes may be preset, and in the process of determining the corrosion environment parameter in the current time period according to the determined resistance parameter range, the determined salt content parameter range, and the determined water content parameter range in step S410, the corrosion environment mode mapped by the determined resistance parameter range, the determined salt content parameter range, and the determined water content parameter range may be used as the environmental corrosion parameter in the current time period based on the mapping relationships.
For convenience of understanding, a specific example is given here, in which the aforementioned B is 3, the environmental corrosion parameters include a high corrosion environment mode, a medium corrosion environment mode, and a low corrosion environment mode, and if the determined resistance parameter range, the salt content parameter range, and the water content parameter range are "resistivity less than 20", "salt content is greater than or equal to 0.75", and "water content is greater than or equal to 12", respectively, the environmental corrosion parameter in the current period is determined to be the aforementioned high corrosion environment mode; if the determined resistance parameter range, the determined salt content parameter range and the determined water content parameter range are respectively 'the resistivity is more than or equal to 20 and less than 50', 'the salt content is more than or equal to 0.05 and less than 0.75' and 'the water content is more than or equal to 5 and less than 12', determining the environmental corrosion parameter in the current time period as the medium-corrosion environment mode; and if the determined resistance parameter range, the determined salt content parameter range and the determined water content parameter range are respectively 'the resistivity is greater than or equal to 50', 'the salt content is less than 0.05' and 'the water content is less than 5', determining the environmental corrosion parameter in the current time period to be the low-corrosion environmental mode.
Referring to fig. 5, further, in the embodiment of the present application, determination priorities of B corrosion environment modes may be further set, and after determining a resistance parameter range corresponding to the resistance parameter, a salt content parameter range corresponding to the salt content parameter, and a water content parameter range corresponding to the water content parameter respectively in step S410, determining a corrosion environment mode corresponding to the environmental corrosion parameter of the current time period based on the mapping relationship according to a sequence from high to low of the determination priorities of the B corrosion environment modes; if the determination priority of the high corrosion environment mode, the medium corrosion environment mode and the low corrosion environment mode is sequentially lowered, it may be determined whether the environmental corrosion parameter of the current time period is the high corrosion environment mode, and then determined whether the environmental corrosion parameter of the current time period is the medium corrosion environment mode if the determination result is negative, and then determined whether the environmental corrosion parameter of the current time period is the low corrosion environment mode if the determination result is still negative. Step S420, in response to the fact that the corrosion environment parameter in the current time interval is smaller than a first parameter threshold value, obtaining the corrosion environment parameter in each history time interval in K1 adjacent history time intervals aiming at the target pipeline section, and determining first leakage indication information of the target pipeline section according to the corrosion environment parameter in the current time interval and the corrosion environment parameter in each history time interval, wherein K1 is a positive integer;
as an embodiment, in step S420, the number of each type of target parameters in the M types of target parameters in the corrosion environment parameters of the current time interval and the corrosion environment parameters of each history time interval in the K1 history time intervals may be, but is not limited to, determined; determining first leakage indication information of the target pipeline section according to the quantity of various target parameters and the total quantity of the parameters of the corrosion environment; wherein, the total amount of the corrosion environment parameters is the total amount of the corrosion environment parameters in the current time period and the corrosion environment parameters in each historical time period; the numerical ranges of the corrosion environment parameters contained in different types of target parameters in the M types of target parameters are different, where M is an integer greater than 1, that is, multiple numerical ranges of the corrosion environment parameters may be preset in the embodiment of the present application, and then the corrosion environment parameters belonging to each of the multiple numerical ranges are regarded as one type of target parameters in the M types of target parameters, and if the environmental corrosion parameters are obtained based on the formula (1) in the embodiment of the present application, multiple parameter thresholds may be preset but are not limited to, the specific values of the environmental corrosion parameters are divided into multiple numerical ranges, and then the corrosion environment parameters belonging to each of the multiple numerical ranges are regarded as one type of target parameters in the M types of target parameters; if the situation that B corrosion environment modes are preset as the corrosion environment parameters is set in the embodiment of the present application, each corrosion environment mode in the B corrosion environment modes may be regarded as one type of target parameters in the M types of target parameters.
As an embodiment, the M-class target parameters include a first-class target parameter, a second-class target parameter, and a third-class target parameter; the first type target parameter is a corrosive environment parameter which is greater than or equal to the first parameter threshold value, the second type target parameter is a corrosive environment parameter which is smaller than the first parameter threshold value and is greater than the second parameter threshold value, the third type target parameter is a corrosive environment parameter which is smaller than the second parameter threshold value, and the first parameter threshold value is greater than the second parameter threshold value; then in step S420, may
Determining first leakage indication information for the aforementioned target pipe segment based on the following equation (2):
Figure 450264DEST_PATH_IMAGE001
formula (2)
In formula (2), G1 is the first leakage indication information, N0 is the total amount of the corrosive environment parameters, and N1, N2, and N3 are the number of the first type target parameters and the number of the second type target parameters, respectively; the aforementioned P1, P2 and P3 are respectively a first index value, a second index value and a third index value, the aforementioned first index value is greater than the aforementioned second index value, and the aforementioned second index value is greater than the aforementioned third index value.
As an example, the aforementioned first type target parameter, second type target parameter and third type target parameter may be, but are not limited to, the aforementioned high corrosion environment mode, medium corrosion environment mode and low corrosion environment mode, respectively; if, in the embodiment of the present application, when one day (i.e., 24 hours) is regarded as one period, K1 is set to 7, the condition that "the corrosive environment parameter of the current period is less than the first parameter threshold value" in step S420 is regarded as "the corrosive environment parameter of the current period is a corrosive environment mode other than a high corrosive environment mode", the obtained environmental corrosion parameter of the current time is a medium corrosive environment mode, the environmental corrosion parameters of the adjacent 7 history periods are respectively a high corrosive environment mode, a medium corrosive environment mode, a low corrosive environment mode, and a low corrosive environment mode, N1, N2, and N3 in formula (2) are respectively regarded as the number of high corrosive environment modes, the number of medium corrosive environment modes, and the number of low corrosive environment modes, and P1, P2, and P3 are respectively set to 3, 2, and 1, it is determined that N0 is 8, N1 is 1, N2 is 4, and N3 is 3, and then G1 is 1.75 is obtained according to formula (2.1).
Figure DEST_PATH_IMAGE008
Equation (2.1).
As an embodiment, in step S430, the first leakage indication information determined in step S420 may be, but is not limited to, determined as the pipe leakage degree of the aforementioned target pipe segment; when the first leakage indication information is a value determined based on the foregoing formula (2), the pipeline leakage degree corresponding to the first leakage indication information at the current time period may also be determined based on a preset correspondence relationship between the value of the first leakage indication information and the pipeline leakage degree.
As an embodiment, after determining the pipe leakage degree of the target pipe segment based on the first leakage indication information in step S430, when the pipe leakage degree is determined to be smaller, the pipe leakage condition may be verified through electromagnetic waves and the like, so as to further improve the accuracy of determining the pipe leakage; that is, after step S430, in the embodiment of the present application, in response to that the pipe leakage degree is smaller than the first leakage degree threshold, the pipe damage parameter in the current time period is determined based on the reflection time information of the target pipe segment for the detection electromagnetic wave in the current time period; determining a pipeline damage parameter of each reference time interval in K2 reference time intervals of the target pipeline segment according to the reflection time information of the target pipeline segment for the detection electromagnetic wave, and determining second leakage indication information of the target pipeline segment according to the pipeline damage parameter of the current time interval and the pipeline damage parameter of each reference time interval; re-determining the pipe leakage degree of the target pipe section at least based on the second leakage indication information; the aforementioned K2 is an integer, and the aforementioned detected electromagnetic wave includes an electromagnetic wave emitted by an electromagnetic wave transceiver device, in this embodiment, the type and the setting position of the electromagnetic wave transceiver device are not limited, and those skilled in the art can set the electromagnetic wave transceiver device according to actual requirements.
As an embodiment, the reflection time information may be a time difference between a time when the electromagnetic wave transceiving device transmits the detection electromagnetic wave and a time when the reception target pipe segment returns the detection electromagnetic wave; in the embodiment of the application, the electromagnetic wave transceiver may periodically transmit the detection electromagnetic wave to each pipeline segment, and a period of transmitting the detection electromagnetic wave is taken as one of K2 reference time periods, which is not limited, and a person skilled in the art may set the period according to actual requirements, for example, the period is set to 60 seconds or 20 minutes; the K2 reference periods may all be periods before the current period, or all may be periods after the current time, and the K2 reference periods may also include both the periods before the current period and the periods after the current period.
As an embodiment, in the embodiment of the present application, after the pipeline leakage monitoring is started, the electromagnetic wave transceiver device is controlled to periodically send the detection electromagnetic waves to each pipeline segment, and in this case, K2 cycles before the current time period may be used as the foregoing K2 reference time periods; or after the pipeline leakage degree of the target pipeline section in the pipeline is judged to be smaller than the first leakage degree threshold value, the electromagnetic wave transceiver is controlled to periodically send the detection electromagnetic waves to the target pipeline section, and in this case, K2 cycles after the current time period can be used as the K2 reference time periods; that is, in the latter case, the degree of leakage/damage of the target pipe section can be further verified by utilizing the reflection performance of the electromagnetic wave by the target pipe section when it is determined that the degree of pipe leakage is small based on the degree of pipe leakage of the current period.
As an embodiment, the determining the second leakage indication information of the target pipeline segment according to the pipeline damage parameter of the current time interval and the pipeline damage parameters of the reference time intervals includes:
determining an abnormal damage parameter from the pipeline damage parameters of the current time interval and the pipeline damage parameters of the reference time intervals, and determining the ratio of the quantity of the abnormal damage parameters to the total quantity of the pipeline damage parameters as second leakage indication information of the target pipeline section based on the following formula (3); the total quantity of the pipeline damage parameters is the total quantity of the pipeline damage parameters in the current time period and the pipeline damage parameters in each reference time period, and the abnormal damage parameters comprise the pipeline damage parameters which represent that the reflection time of the target pipeline section for the detection electromagnetic wave is abnormal in the corresponding time period.
Figure 495580DEST_PATH_IMAGE009
In the formula (2), G2 is the aforementioned second leakage indication information.
<xnotran> 6 , K2 12, , 1 , 5 , 12 , 13 {9s, 9s, 9s, 9s, 9s, 9s, 9s, 9s, 9s, 9s, 9s, 12s, 12s }, 12s , (3) </xnotran>
Figure DEST_PATH_IMAGE010
。
And then the numerical value of the second leakage indication information G2 can be directly used as the pipeline leakage degree of the target pipeline section, and the pipeline leakage degree of the target pipeline section can be determined based on the corresponding relation between the second leakage indication information and the pipeline leakage degree.
As an embodiment, in order to further improve the reduction of the false alarm rate of monitoring the leakage of the pipeline, the embodiment of the present application may further verify whether the target pipeline segment leaks or not by using the temperature values of the multiple positions on the target pipeline segment based on the fact that the temperature of the damaged/leaked pipeline segment has different characteristics after the pipeline leakage degree is determined to be smaller than the second leakage degree threshold; specifically, in this embodiment of the application, after the pipeline leakage degree of the target pipeline segment is re-determined based on at least the second leakage indication information, and in response to that the re-determined pipeline leakage degree is smaller than a second leakage degree threshold, the temperature-sensitive optical fiber is used to periodically obtain a plurality of temperature value sequences of the target pipeline segment with a target time duration as a period; determining third leakage indication information of the target pipeline section according to the temperature value sequences; and re-determining the pipeline leakage degree of the target pipeline section at least based on the third leakage indication information; each temperature value sequence in the plurality of temperature value sequences comprises temperature values of a plurality of different positions of the target pipeline section; wherein a sequence of temperature values for a target pipeline segment is acquired in a cycle.
As an embodiment, the determining third leakage indication information of the target pipeline segment according to the temperature value sequences includes: determining a temperature value sequence with different temperature values in a plurality of temperature values at different positions as an abnormal temperature value sequence; the third leak indication information is determined based on the following formula (4) as a ratio of the number of abnormal temperature value sequences to the total number of the plurality of temperature value sequences.
Figure DEST_PATH_IMAGE011
In the formula (2), G3 is the aforementioned third leakage indication information.
<xnotran> , 5 7 , 7 {25, 25, 25, 25, 25}, {25, 25, 25, 25, 25}, {25, 25, 25, 25, 25}, {25, 25, 25, 25, 25}, {25, 25, 25, 25, 25}, {25, 25, 30, 25, 25}, {25, 25, 30, 25, 25}, 7 ; </xnotran> It can be known from the foregoing that {25, 30, 25}, {25, 30, 25} is the abnormal temperature value sequence, it is determined that the third leakage indication information is the abnormal temperature value sequence based on equation (4)
Figure DEST_PATH_IMAGE012
。
As an embodiment, when the method provided in this embodiment of the application is applied to the cloud 320, the distributed server 330, or the internet of things control system 340, the cloud 320 or the distributed server 330 and the internet of things control end 340 may respectively perform the processes from step S410 to step S430 with each pipeline segment in the whole pipeline as a target pipeline segment, obtain the pipeline leakage degree of each pipeline segment in the whole pipeline, further integrate the pipeline leakage degree of each pipeline segment in each pipeline into pipeline leakage information, and send the pipeline leakage information to the user terminal 350 bound by the target user.
As an example, a person skilled in the art may set a specific form of the pipeline leakage information according to actual needs, for example, the pipeline section leakage information may include, but is not limited to, pipeline section information of an abnormal pipeline section, for example, the pipeline section information of the abnormal pipeline section may include, but is not limited to, at least one of identification information, position information, model information, manufacturer information, historical damage and/or repair information, historical use time information, and repair person information of the abnormal pipeline section; the position information can be longitude and latitude and/or geographic coordinate points and other information of a geographic position where the corresponding abnormal pipeline section is laid; the abnormal pipe segment may be, but is not limited to, a target pipe segment having a pipe leakage degree greater than a third pipe leakage threshold; in the embodiment of the present application, the sizes of the first pipeline leakage threshold, the second pipeline leakage threshold, and the third pipeline leakage threshold are not limited, and those skilled in the art can set the thresholds according to actual requirements.
Further, when the pipe segment information of the abnormal pipe segment includes the position information of the corresponding abnormal pipe segment, the pipe leakage alarm information may, but is not limited to, carry at least one of the first leakage indication information and the position information of each abnormal pipe segment; the first leakage indication information may include, but is not limited to, first indication information indicating that the pipeline has leaked or second indication information indicating that the pipeline has not leaked, and the first leakage indication information may further include information such as the level of risk of substance leakage described above.
When the pipeline segment information includes the position information of the corresponding abnormal pipeline segment, the cloud 320, the distributed server 330, or the internet of things control terminal 410 may further generate a leakage position path diagram for the entire pipeline according to the acquired position information of each abnormal pipeline segment and the path diagrams of the plurality of pipeline segments of the pipeline, and load the leakage position path diagram into the pipeline leakage alarm information, where the leakage position path diagram is loaded with enhanced display information for each abnormal pipeline segment.
As an embodiment, in the step S420, if the corrosion environment parameter in the current time period is greater than or equal to the first parameter threshold, it indicates that the environmental corrosion degree of the soil environment covering the target pipeline segment in the current time period is higher, and it may be directly determined that the target pipeline segment is in the high environmental corrosion mode, so as to trigger an alarm/prompt message/signal for leakage of the target pipeline segment.
Referring to fig. 6, based on the same inventive concept, an embodiment of the present application further provides a device 600 for reducing false alarm of pipeline leakage, where the pipeline includes a plurality of pipeline segments connected end to end in sequence, and the device 600 includes:
the first processing unit 601 is configured to determine a corrosion environment parameter in a current time period based on a resistance parameter, a salt content parameter and a water content parameter of a target pipeline section in the current time period; the corrosion environment parameter represents the environmental corrosion degree of the soil covering the target pipeline section in a corresponding time period, and the corrosion environment parameter is positively correlated with the environmental corrosion degree; the target pipeline section is any pipeline section in the plurality of pipeline sections;
a second processing unit 602, configured to, in response to that the corrosion environment parameter in the current time interval is smaller than a first parameter threshold, obtain, for the target pipeline segment, a corrosion environment parameter in each of K1 adjacent history time intervals, and determine first leakage indication information of the target pipeline segment according to the corrosion environment parameter in the current time interval and the corrosion environment parameter in each history time interval, where K1 is a positive integer;
a leakage determination unit 603 configured to determine a pipe leakage degree of the target pipe segment based on the first leakage indication information.
As an embodiment, the first processing unit 601 is specifically configured to:
respectively determining a resistance parameter range corresponding to the resistance parameter, a salt content parameter range corresponding to the salt content parameter and a water content parameter range corresponding to the water content parameter; determining the corrosion environment parameter of the current time period according to the determined resistance parameter range, the determined salt content parameter range and the determined water content parameter range; or
Weighting and summing the resistance parameter, the salt content parameter and the water content parameter by using the resistance weight, the salt content weight and the water content weight to obtain the corrosion environment parameter of the current time period
As an embodiment, the second processing unit 602 is specifically configured to:
determining the quantity of various target parameters in M types of target parameters in the corrosion environment parameters of the current time period and the corrosion environment parameters of each historical time period, wherein the numerical ranges of the corrosion environment parameters contained in different types of target parameters in the M types of target parameters are different, and M is an integer greater than 1;
determining first leakage indication information of the target pipeline section according to the quantity of various target parameters and the total quantity of the parameters of the corrosion environment; the total amount of the corrosive environment parameters is the total amount of the corrosive environment parameters of the current time period and the corrosive environment parameters of the historical time periods.
As an embodiment, the M-class target parameters include a first-class target parameter, a second-class target parameter, and a third-class target parameter; the first type target parameter is a corrosive environment parameter which is greater than or equal to the first parameter threshold value, the second type target parameter is a corrosive environment parameter which is smaller than the first parameter threshold value and is greater than the second parameter threshold value, the third type target parameter is a corrosive environment parameter which is smaller than the second parameter threshold value, and the first parameter threshold value is greater than the second parameter threshold value;
the second processing unit 602 is specifically configured to: determining first leakage indication information for the aforementioned target pipeline segment based on the following formula:
Figure 421948DEST_PATH_IMAGE001
；
g1 is the first leakage indication information, N0 is the total amount of the corrosive environment parameters, and N1, N2 and N3 are the number of the first type target parameters and the number of the second type target parameters respectively; the aforementioned P1, P2 and P3 are respectively a first index value, a second index value and a third index value, the aforementioned first index value is greater than the aforementioned second index value, and the aforementioned second index value is greater than the aforementioned third index value.
As an embodiment, the leakage determination unit 603 is further configured to:
after determining the pipe leakage degree of the target pipe section based on the first leakage indication information, in response to the pipe leakage degree being smaller than a first leakage degree threshold value, determining a pipe damage parameter of the current time period based on reflection time information of the target pipe section for a detection electromagnetic wave in the current time period, wherein the detection electromagnetic wave comprises an electromagnetic wave transmitted by an electromagnetic wave transceiving device;
determining a pipeline damage parameter of each reference time interval in K2 reference time intervals of the target pipeline segment according to the reflection time information of the target pipeline segment for the detection electromagnetic wave, and determining second leakage indication information of the target pipeline segment according to the pipeline damage parameter of the current time interval and the pipeline damage parameter of each reference time interval; the above K2 is an integer;
and re-determining the pipeline leakage degree of the target pipeline section at least based on the second leakage indication information.
As an embodiment, the leakage determination unit 603 is specifically configured to:
determining abnormal damage parameters from the pipeline damage parameters of the current time interval and the pipeline damage parameters of the reference time intervals, wherein the abnormal damage parameters comprise pipeline damage parameters which represent that the reflection time of the target pipeline section for the detection electromagnetic waves is abnormal in the corresponding time interval;
and determining the ratio of the number of the abnormal damage parameters to the total number of the pipeline damage parameters as second leakage indication information of the target pipeline section, wherein the total number of the pipeline damage parameters is the total number of the pipeline damage parameters of the current time period and the total number of the pipeline damage parameters of each reference time period.
As an embodiment, the leakage determination unit 603 is further configured to:
after the pipeline leakage degree of the target pipeline segment is redetermined based on the second leakage indication information, in response to that the redetermined pipeline leakage degree is smaller than a second leakage degree threshold value, a plurality of temperature value sequences of the target pipeline segment are periodically obtained by using a temperature-sensitive optical fiber with a target time length as a period, wherein each temperature value sequence in the plurality of temperature value sequences comprises temperature values of a plurality of different positions of the target pipeline segment;
determining third leakage indication information of the target pipeline section according to the temperature value sequences;
and re-determining the pipeline leakage degree of the target pipeline section at least based on the third leakage indication information.
As an embodiment, the leakage determination unit 603 is specifically configured to:
determining a temperature value sequence with different temperature values in a plurality of temperature values at different positions as an abnormal temperature value sequence;
and determining a ratio of the number of the abnormal temperature value sequences to the total number of the plurality of temperature value sequences as the third leakage indication information.
Based on the same inventive concept, the embodiment of the present invention further provides a device for reducing false alarm of pipeline leakage, and since the device is the device in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 7, the apparatus includes a processor 700 and a memory 701, the memory 701 is used for storing a program executable by the processor 700, and the processor 700 is used for reading the program in the memory 701 and executing the method for automatically monitoring the pipe leakage and the steps of the method according to any of the foregoing embodiments, which will not be repeated herein.
Based on the same inventive concept, an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method for reducing false alarm of pipe leakage according to any one of the above methods.
Based on the same inventive concept, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is enabled to execute the steps of the method for reducing false alarm of pipeline leakage.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory 701 that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory 701 produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a wrong report reducing method of pipeline leakage which characterized in that, the pipeline includes a plurality of pipeline sections that end to end connects gradually, the wrong report reducing method of pipeline leakage includes:
determining a corrosion environment parameter of the current time period based on the resistance parameter, the salt content parameter and the water content parameter of the target pipeline section in the current time period; the corrosive environment parameter represents the environmental corrosion degree of the soil covering the target pipeline section in a corresponding time period, and the corrosive environment parameter is positively correlated with the environmental corrosion degree; the target pipeline segment is any pipeline segment in the plurality of pipeline segments;
in response to that the corrosion environment parameter of the current time period is smaller than a first parameter threshold value, obtaining the corrosion environment parameter of each history time period in K1 adjacent history time periods aiming at the target pipeline section, and determining first leakage indication information of the target pipeline section according to the corrosion environment parameter of the current time period and the corrosion environment parameter of each history time period, wherein K1 is a positive integer;
and determining the pipeline leakage degree of the target pipeline section based on the first leakage indication information.
2. The method for reducing false alarms in pipeline leakage according to claim 1, wherein the determining the corrosion environment parameter for the current time period based on the resistance parameter, the salt content parameter and the water content parameter of the target pipeline section in the current time period comprises:
respectively determining a resistance parameter range corresponding to the resistance parameter, a salt content parameter range corresponding to the salt content parameter, and a water content parameter range corresponding to the water content parameter; determining the corrosion environment parameter of the current time period according to the determined resistance parameter range, the determined salt content parameter range and the determined water content parameter range; or
And weighting and summing the resistance parameters, the salt content parameters and the water content parameters by using the resistance weight, the salt content weight and the water content weight to obtain the corrosion environment parameters of the current time period.
3. The method of reducing false alarm of pipeline leakage according to claim 1, wherein said determining a first leakage indication information of said target pipeline segment according to said corrosion environment parameters of said current time period and said corrosion environment parameters of said historical time periods comprises:
determining the quantity of various target parameters in M types of target parameters in the corrosion environment parameters of the current time period and the corrosion environment parameters of each historical time period, wherein the numerical ranges of the corrosion environment parameters contained in different types of target parameters in the M types of target parameters are different, and M is an integer greater than 1;
determining first leakage indication information of the target pipeline section according to the quantity of various target parameters and the total quantity of corrosive environment parameters; the total amount of the corrosion environment parameters is the total amount of the corrosion environment parameters of the current time period and the corrosion environment parameters of each historical time period.
4. The method of reducing false positives of pipe leakage of claim 3, wherein the M classes of target parameters include a first class of target parameters, a second class of target parameters, and a third class of target parameters; the first type of target parameter is a corrosive environment parameter which is greater than or equal to the first parameter threshold value, the second type of target parameter is a corrosive environment parameter which is smaller than the first parameter threshold value and is greater than the second parameter threshold value, the third type of target parameter is a corrosive environment parameter which is smaller than the second parameter threshold value, and the first parameter threshold value is greater than the second parameter threshold value;
the determining the first leakage indication information of the target pipeline section according to the quantity of various target parameters and the total quantity of the parameters of the corrosion environment comprises the following steps:
determining first leakage indication information for the target pipe segment based on the following formula:
Figure DEST_PATH_IMAGE001
；
g1 is the first leakage indication information, N0 is the total amount of the corrosive environment parameters, and N1, N2 and N3 are the number of the first type target parameters and the number of the second type target parameters respectively; p1, P2 and P3 are first mark value, second mark value and third mark value respectively, first mark value is greater than the second mark value, the second mark value is greater than the third mark value.
5. The method of reducing false positives of pipe leakage according to any one of claims 1-4, wherein after determining a degree of pipe leakage for the target pipe section based on the first leakage indication information, the method further comprises:
in response to the pipe leakage degree being less than a first leakage degree threshold value, determining a pipe damage parameter for the current time period based on reflection time information of the target pipe segment for a detection electromagnetic wave in the current time period, the detection electromagnetic wave comprising an electromagnetic wave transmitted by an electromagnetic wave transceiving device;
determining a pipeline damage parameter of each reference time interval in K2 reference time intervals of the target pipeline segment according to reflection time information of the target pipeline segment for the detection electromagnetic wave, and determining second leakage indication information of the target pipeline segment according to the pipeline damage parameter of the current time interval and the pipeline damage parameter of each reference time interval; k2 is an integer;
re-determining a pipe leakage level of the target pipe segment based at least on the second leakage indication information.
6. The method for reducing false alarm of pipeline leakage according to claim 5, wherein said determining second leakage indication information of the target pipeline segment according to the pipeline damage parameter of the current time period and the pipeline damage parameters of the reference time periods comprises:
determining abnormal damage parameters from the pipeline damage parameters of the current time period and the pipeline damage parameters of each reference time period, wherein the abnormal damage parameters comprise pipeline damage parameters which represent that the reflection time of the target pipeline section for the detection electromagnetic waves is abnormal in the corresponding time period;
and determining the ratio of the number of the abnormal damage parameters to the total number of the pipeline damage parameters as second leakage indication information of the target pipeline section, wherein the total number of the pipeline damage parameters is the total number of the pipeline damage parameters in the current time period and the total number of the pipeline damage parameters in each reference time period.
7. The method of reducing false positives of pipe leakage of claim 5, wherein after re-determining a pipe leakage level of the target pipe segment based at least on the second leakage indication information, further comprising:
in response to that the newly determined pipeline leakage degree is smaller than a second leakage degree threshold value, periodically acquiring a plurality of temperature value sequences of the target pipeline segment by using a temperature-sensing optical fiber with a target time length as a period, wherein each temperature value sequence in the plurality of temperature value sequences comprises temperature values of a plurality of different positions of the target pipeline segment;
determining third leakage indication information of the target pipeline segment according to the temperature value sequences;
re-determining a pipe leakage level of the target pipe segment based at least on the third leakage indication information.
8. The method of reducing false positives of pipe leaks of claim 7, wherein the determining third leak indicator information for the target pipe segment from the plurality of temperature value sequences comprises:
determining a temperature value sequence with different temperature values in the temperature values of a plurality of different positions as an abnormal temperature value sequence;
determining a ratio of the number of the abnormal temperature value sequences to a total number of the plurality of temperature value sequences as the third leakage indication information.
9. A device for reducing false alarm of pipeline leakage is characterized by comprising a processor and a memory, wherein the memory is used for storing programs executable by the processor, and the processor is used for reading the programs in the memory and executing the steps of the method for automatically monitoring pipeline leakage according to any one of claims 1 to 8.
10. A computer storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the steps of the method for automatic monitoring of pipe leakage according to any one of claims 1 to 8.
CN202210865229.6A 2022-07-22 2022-07-22 False alarm reduction method and equipment for pipeline leakage Active CN115183160B (en)

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