Drainage pipe monitoring method and device

Abstract

The present application relates to the technical field of drainage network operation, maintenance and management, and in particular to a drainage pipeline monitoring method and device; the method comprises: controlling M unit temperature measuring fiber segments included in a temperature measuring optical fiber, collecting temperature data of a drainage pipeline to obtain M groups of temperature distribution cycle data; M is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipeline with equal pitch; the M unit temperature measuring optical fiber segments correspond to the M groups of temperature distribution cycle data one by one; the temperature distribution cycle data comprises temperature data collected from a plurality of temperature measuring points in the unit temperature measuring optical fiber segment for the drainage pipeline segment; determining target information of target temperature data indicating a sudden temperature change in the temperature distribution cycle data; and determining pipeline monitoring data of the drainage pipeline according to the target information.

Description

Technical Field

[0001] The present application relates to the technical field of drainage pipe network operation, maintenance and management, and in particular to a drainage pipe monitoring method and device. Background Art

[0002] In urban construction, drainage networks can quickly discharge rainy season precipitation into natural water bodies, and can also collect sewage generated by production and life, and discharge it after the sewage is treated. Therefore, drainage networks are very important for production and life in cities.

[0003] In the actual operation of the drainage network, if the pipeline is overloaded (overflowing), seeping or blocked, it is very likely to affect the production and life in the city, and even endanger the economic production of enterprises and the personal safety of residents. Therefore, it is necessary to monitor the smooth operation of the drainage network in real time. By real-time monitoring of key information such as the water level, silt thickness and flow of the drainage network, staff can promptly discover potential problems and take corresponding measures to ensure the stable operation of the drainage system.

[0004] In the existing technology, the monitoring methods for the patency of drainage pipes include manual inspections, instrument monitoring, etc. Although they can achieve basic monitoring of drainage pipes, in actual implementation, there are shortcomings such as limited manual monitoring range, few instrument and equipment deployment points, high cost and great difficulty. These often lead to problems such as poor accuracy in drainage pipe monitoring, delayed data feedback, limited monitoring points, and difficulty in monitoring silt thickness, resulting in the inability to provide real-time, accurate and effective data support for drainage network operation and maintenance. Summary of the invention

[0005] In view of this, the purpose of this application is to provide a drainage pipe monitoring method and device to solve the technical problems existing in the prior art such as poor accuracy of drainage pipe monitoring results, delayed data feedback, limited monitoring points, and difficulty in monitoring silt thickness.

[0006] In a first aspect, the present application provides a drainage pipe monitoring method, the method comprising:

[0007] Control temperature measurement optical fiber includes The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Set temperature distribution period data;

[0008] Among them, the is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; The unit temperature measuring optical fiber segment and The temperature distribution period data of each group are in one-to-one correspondence; the temperature distribution period data includes temperature data collected from multiple temperature measurement points in the unit temperature measurement optical fiber segment for the drainage pipe;

[0009] Determine target information of target temperature data indicating a sudden temperature change in the temperature distribution period data;

[0010] Determining pipeline monitoring data of the drainage pipeline according to the target information;

[0011] Wherein, the pipeline monitoring data includes: water level distribution data, silt distribution data and flow distribution data.

[0012] In a second aspect, the present application provides a drainage pipe monitoring device, the device comprising: a data acquisition module, a first data processing module and a second data processing module;

[0013] The data acquisition module is used to control the temperature measurement optical fiber. The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Set temperature distribution period data;

[0014] Among them, the is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; The unit temperature measuring optical fiber segment and The temperature distribution period data of each group are in one-to-one correspondence; the temperature distribution period data includes temperature data collected from multiple temperature measurement points in the unit temperature measurement optical fiber segment for the drainage pipe;

[0015] The first data processing module is used to determine target information of target temperature data indicating a sudden temperature change in the temperature distribution period data;

[0016] The second data processing module is used to determine the pipeline monitoring data of the drainage pipeline according to the target information;

[0017] Wherein, the pipeline monitoring data includes: water level distribution data, silt distribution data and flow distribution data.

[0018] Beneficial effects:

[0019] The present application provides a drainage pipeline monitoring method, the method comprising: controlling the temperature measuring optical fiber included The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Group temperature distribution period data; where, is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; Unit temperature measuring optical fiber section and The temperature distribution period data are in one-to-one correspondence; the temperature distribution period data includes the temperature data collected by multiple temperature measuring points in the unit temperature measuring optical fiber segment for the drainage pipe segment; the target information of the target temperature data indicating the temperature mutation in the temperature distribution period data is determined; the water level distribution data, the silt distribution data and the flow distribution data of the drainage pipe are determined according to the target information;

[0020] In summary, first, the present application can control the temperature measurement optical fiber in real time. The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. The temperature distribution cycle data is then used to determine the key data such as the water level distribution, silt distribution data and flow distribution data in the drainage pipe. The calculation is based on the temperature distribution cycle data of the group, so the accuracy is very high and it is real-time data, which is conducive to the healthy operation and maintenance management of the pipeline network;

[0021] Secondly, since the entire process only requires the collection of temperature distribution periodic data, there is no need to deploy multiple monitoring equipment or measure other parameters or information. Therefore, it also has the advantages of low cost, safety, reliability and easy operation. Therefore, it can be widely used in drainage projects and related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. The following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 An example flow chart of a drainage pipe monitoring method provided in an embodiment of the present application;

[0024] Figure 2 An example diagram of the layout of the temperature measuring optical fiber in the drainage pipe provided in the embodiment of the present application;

[0025] Figure 3 The first example diagram of temperature periodic data provided in the embodiment of the present application;

[0026] Figure 4 A second example diagram of temperature periodic data provided in an embodiment of the present application;

[0027] Figure 5 An exemplary diagram of a first drainage pipe section provided in an embodiment of the present application;

[0028] Figure 6 An exemplary diagram of a second drainage pipe section provided in an embodiment of the present application;

[0029] Figure 7 A third example diagram of temperature periodic data provided in an embodiment of the present application;

[0030] Figure 8 A fourth example diagram of temperature periodic data provided in an embodiment of the present application;

[0031] Fig. 9 An example diagram of a vertical surface in a second drainage pipe section provided in an embodiment of the present application;

[0032] Fig.10 This is a structural example diagram of the drainage pipe monitoring device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0034] In a first aspect, the present application provides an embodiment of a drainage pipe monitoring method, such as Figure 1 As shown, Figure 1 This is a flow chart of a drainage pipe monitoring method provided in an embodiment of the present application. The method includes: S110 to S130, details of which are as follows:

[0035] S110: Control temperature measurement optical fiber includes The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Set temperature distribution period data;

[0036] in, is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; Unit temperature measuring optical fiber section and The temperature distribution period data of each group are in one-to-one correspondence; the temperature distribution period data includes the temperature data collected from the drainage pipe at multiple temperature measurement points in the unit temperature measurement optical fiber segment.

[0037] Specifically, in order to facilitate the statistics of the temperature distribution data of the entire drainage pipe, the embodiment of the present application divides the temperature measuring optical fiber and the drainage pipe into , and accordingly Unit temperature measuring fiber section and unit drainage pipe sections; wherein each unit temperature measuring optical fiber section corresponds to a spiral axis in the temperature measuring optical fiber, and the unit drainage pipe section is a portion of the drainage pipe arranged by the unit temperature measuring optical fiber section, so Unit temperature measuring optical fiber section and In actual implementation, when the temperature measurement optical fiber is included in the Unit temperature measurement optical fiber segment, for drainage pipes including When the temperature data of a unit drainage pipe section is collected, the result is The temperature distribution period data refers to the temperature data collected by multiple temperature measuring points in the unit temperature measuring optical fiber segment for the corresponding unit drainage pipe segment.

[0038] In actual applications, when the temperature measuring optical fiber is laid on the inner wall of the drainage pipe, the temperature measuring optical fiber can be laid out with equal pitch along the inner wall of the drainage pipe starting from the end point of the drainage pipe; it should be emphasized that the temperature measuring optical fiber and the unit temperature measuring optical fiber segment in S110 refer to the temperature measuring optical fiber segment laid on the inner wall of the drainage pipe; in actual operation, because the temperature measuring optical fiber is generally laid from the ground through an inspection well or a rainwater outlet and then extended into the interior of the drainage pipe, in actual situations, there is also a part of optical fiber transition segment used for transition between the lowest point of the starting end of the drainage pipe and the actual end point of the entire section of the temperature measuring optical fiber. Although the optical fiber transition segment also collects temperature data, in the implementation of the technical solution of the embodiment of the present application, the temperature data collected by the optical fiber transition segment will be eliminated, and the laying starting point of the "temperature measuring optical fiber" will be set at the lowest point of the starting section of the drainage pipe to ensure that the temperature data collected by the temperature measuring optical fiber are all temperature data inside the drainage pipe; such as Figure 2 As shown, Figure 2 This is an example diagram of the layout of the temperature measuring optical fiber in the drainage pipe provided in an embodiment of the present application, in which the temperature measuring optical fiber is spirally laid on the inner wall of the drainage pipe.

[0039] S120: Determine target information of target temperature data indicating a sudden temperature change in the temperature distribution period data.

[0040] Specifically, when the interior of the drainage pipe is full of water and free of silt, or when the interior of the drainage pipe is full of air and free of water and silt, the temperature distribution cycle data values ​​measured by each unit temperature measuring optical fiber segment are basically the same; in actual applications, the monitoring length of the drainage pipe or the environmental factors may cause the temperature inside the drainage pipe to be different. The values ​​of the temperature distribution cycle data are not always equal, but their changes do not belong to the "mutation degree", and their changes are smooth and insignificant. Therefore, in the embodiment of the present application, if target temperature data indicating a temperature mutation appears in the temperature distribution cycle data, the unit drainage pipe section corresponding to the temperature distribution cycle data can be confirmed as having at least water flow and air, so the measured temperature distribution cycle data will show target temperature data indicating a temperature mutation.

[0041] When the target temperature data indicating a sudden temperature change appears in the temperature distribution period data, the target information of the target temperature data needs to be determined. The group temperature distribution cycle data is displayed in the form of a chart, through which the target temperature data can be intuitively determined; Figure 3 and Figure 4 As shown, Figure 3 This is the first example diagram of temperature periodic data provided in the embodiment of the present application. Figure 4 This is a second example diagram of temperature periodic data provided in an embodiment of the present application. Figure 3 and Figure 4 Marked in and The position is the target temperature data collected by the first target temperature measurement point, and the fiber length of the unit temperature measurement fiber section is In practical applications, due to the different external environments of the drainage pipe, the relationship between the temperature of the water flow in the drainage pipe and the temperature of the air may be such that the temperature of the water flow is greater than the temperature of the air or less than the temperature of the air. However, no matter how the temperature change trend is, what needs to be determined in the embodiment of the present application is the target temperature data indicating the temperature mutation, whether it is the target temperature data in the process of changing from high to low or the target temperature data in the process of changing from low to high.

[0042] S130: Determine pipeline monitoring data of the drainage pipeline according to the target information;

[0043] Among them, pipeline monitoring data include: water level distribution data, silt distribution data and flow distribution data.

[0044] Specifically, the target information includes: the number of target temperature data and the first target temperature measurement point corresponding to the target temperature data, the first target temperature measurement point indicating the junction of the air and water flow inside the target drainage pipe section; the drainage pipe includes: Unit drainage pipe section, Unit temperature measuring optical fiber section and There is a one-to-one correspondence between the unit drainage pipe sections.

[0045] In one implementation, S130 includes: Step (1) to Step (4), details of which are as follows:

[0046] Step (1): The unit drainage pipe section corresponding to the temperature distribution period data having the target temperature data being greater than or equal to 2 in the group temperature distribution period data is determined as the target drainage pipe section;

[0047] The target drainage pipe section is a unit drainage pipe section having air and water flow or air, water flow and silt inside.

[0048] Specifically, the target temperature data in each set of temperature distribution periodic data can effectively indicate the material composition inside the unit temperature measuring optical fiber segment corresponding to the set of temperature distribution periodic data, that is, whether there is air and water flow at the same time or silt in addition to air and water flow. In practical applications, it needs to be determined according to the number and temperature level of the target temperature data.

[0049] The purpose of determining the target temperature measurement point is to select the temperature measurement point corresponding to the target temperature data mutation from the multiple temperature measurement points included in each unit temperature measurement optical fiber segment, so as to facilitate the subsequent determination of the water level of the pipeline according to the position of the target temperature measurement point in the drainage pipeline.

[0050] In one implementation, the starting point of the temperature measuring optical fiber is set at the lowest point of the port of the drainage pipe; the target drainage pipe section includes: a first drainage pipe section, which is a unit drainage pipe section with air and water flow inside; step (1) includes: step (1.1), details of which are as follows:

[0051] Step (1.1): The unit drainage pipe section corresponding to the temperature distribution period data whose target temperature data in the group of temperature distribution period data is equal to 2 is determined as the first drainage pipe section.

[0052] Specifically, if the number of target temperature data is 2, and the mutation point temperatures are at the same or close level, it indicates that there are substances in any two states of gas (corresponding to the air in the embodiment of the present application), liquid (corresponding to the water flow in the embodiment of the present application), and solid (corresponding to the sludge in the embodiment of the present application) inside the unit drainage pipe at the same time. If the number of target temperature data is 2, and the mutation point temperature values ​​are at different levels, indicating that there are three medium substances at the same time, then the first drainage pipe section definition is not applicable.

[0053] In the embodiment of the present application, it is only necessary to determine the unit drainage pipe section in which air and water flow exist as the first drainage pipe section.

[0054] In practical applications, when the number of target temperature data corresponding to a unit temperature measuring optical fiber segment is 4, it can be directly determined that the unit temperature measuring optical fiber segment includes: air, water flow and silt; however, when the number of target temperature data corresponding to a unit temperature measuring optical fiber segment is 2, it is necessary to combine historical experience and actual conditions to determine whether the temperature measuring point corresponding to the above two target temperature data is at the junction of air and water flow, or indicates the junction of air and silt; the actual conditions may be the function of the drainage pipe, the season and climate when the temperature measuring point collects temperature data;

[0055] For example, for the unit drainage pipe section A1 used to transport domestic sewage in the city, if the unit temperature measurement optical fiber section B1 corresponding to the unit drainage pipe section A1 has two or four target temperature measurement points in one day, it means that there is silt inside the unit drainage pipe section A1. If two target temperature measurement points appear in the unit temperature measurement optical fiber section B1 at a certain temperature collection time, it means that the target temperature measurement point indicates the junction of air and silt.

[0056] For another example, for the unit drainage pipe section A2 in the city that is used to transport rainwater, when the unit drainage pipe section A2 is filled with water, there is no target temperature measurement point in the unit temperature measurement optical fiber section B2 corresponding to the unit drainage pipe section A2, indicating that there is no silt inside the unit drainage pipe section A2. Therefore, if two target temperature measurement points appear in the unit temperature measurement optical fiber section B2, it can be shown that the target temperature measurement point indicates the boundary between air and water.

[0057] In one implementation, the starting point of the temperature measuring optical fiber is set at the lowest point of the port of the drainage pipe; the target drainage pipe section includes: the second drainage pipe section, the second drainage pipe section is a unit drainage pipe section with air, water flow and silt inside; step (1) includes: step (1.2), the details are as follows:

[0058] Step (1.2): The unit drainage pipe segment corresponding to the temperature distribution period data having the number of target temperature data equal to 4 in the group of temperature distribution period data is determined as the second drainage pipe segment.

[0059] Specifically, if the number of target temperature data is 4, it indicates that there are substances in three states of gaseous state (corresponding to the air in the embodiment of the present application), liquid state (corresponding to the water flow in the embodiment of the present application) and solid state (corresponding to the sludge in the embodiment of the present application) inside the unit drainage pipe at the same time.

[0060] Step (2): determining a target vertical distance between the first target temperature measuring point and the horizontal plane where the bottom of the temperature measuring point section of the target drainage pipe section is located according to the target optical fiber length of the first target temperature measuring point corresponding to the target drainage pipe section;

[0061] The target optical fiber length is the optical fiber length between the first target temperature measurement point and the starting point of the temperature measurement optical fiber.

[0062] Specifically, the target optical fiber length of each temperature measuring point in the temperature measuring optical fiber can be confirmed after the temperature measuring optical fiber is arranged on the inner wall of the drainage pipe.

[0063] The temperature measuring optical fiber in the embodiment of the present application is spirally arranged with equal pitch on the inner wall of the drainage pipe, so when the target optical fiber length of the first target temperature measuring point is determined, the target vertical position of the first target temperature measuring point relative to the drainage pipe can be determined accordingly.

[0064] In practical applications, the target vertical position of the target temperature measurement point is determined by referring to the confirmation process of the coordinates of the first target temperature measurement point in the target coordinate system; the target coordinate system is a coordinate system constructed based on the drainage pipe, such as Figure 5 As shown, Figure 5 This is an example diagram of the first drainage pipe section provided in an embodiment of the present application. Figure 5 The horizontally extending cylinder in the figure is the drainage pipe, and the horizontally extending dotted line indicates the horizontal plane of the water flow in the drainage pipe. Figure 5 There is only water flow in the drainage pipe, so the multiple drainage pipe sections included in the drainage pipe are all first drainage pipe sections; the coordinates of the first target temperature measurement point are determined according to the target optical fiber length of the target temperature measurement point and the fourth formula; wherein the fourth formula is as follows:

[0065] ;

[0066] ;

[0067] ;

[0068] ; ;

[0069] In the formula, , and Respectively represent The target temperature measurement point in the unit temperature measurement optical fiber section In the target coordinate system Axis coordinates, Axis coordinates and Axis coordinates;

[0070] Indicates the diameter of the drainage pipe; Indicates the pitch of the temperature measuring optical fiber;

[0071] express The target fiber length, express With The relative fiber length between the ends of the unit temperature measuring fiber sections, Indicates the fiber length of the unit temperature measurement fiber segment;

[0072] express The target pipe length, express With The relative pipe lengths between the ends of the unit drainage pipe sections;

[0073] In one implementation, the derivation process of the fourth formula is as follows:

[0074] (a) Known quantities: The total length of the temperature-sensing optical fiber is 𝑆; The pitch of the temperature-sensing optical fiber is ; The temperature measuring point of the temperature measuring optical fiber at the starting point of the extension in the inner wall of the drainage pipe is The total length of the drainage pipe is ;Diameter of drainage pipe ;

[0075] Amount of knowledge: Temperature measurement points on the unit temperature measurement optical fiber section The coordinates in the target coordinate system are ;

[0076] (b) The total length of the temperature measuring optical fiber 𝑆 and the total length of the drainage pipe The relationship between them is as follows:

[0077] ;

[0078] The total length of the temperature measuring optical fiber 𝑆 and the length of the unit temperature measuring optical fiber segment The relationship between them is as follows:

[0079] ;

[0080] The fiber length of a unit temperature measuring fiber section corresponding to one spiral period in the temperature measuring fiber The calculation formula is as follows:

[0081] ;

[0082] (c) Temperature measurement point The target fiber length is The calculation formula is as follows:

[0083] ;

[0084] ;

[0085] (d) According to the characteristics of the spiral curve, determine , and The following expression:

[0086] ; ; ;

[0087] according to , and The expression of derives the following expression:

[0088] ;

[0089] according to The expression and , and derive the following expressions in turn:

[0090] ;

[0091] ;

[0092] ;

[0093] ;

[0094] .

[0095] With reference to the coordinate determination process of the target temperature measurement point, a first formula can be constructed to determine the target vertical distance of the target temperature measurement point;

[0096] Among them, the first formula is as follows:

[0097] ;

[0098] ;

[0099] ; ;

[0100] In the formula, Indicates The first target temperature measurement point in the unit temperature measurement optical fiber section The corresponding vertical distance to the target; Indicates The second first target temperature measurement point in the unit temperature measurement optical fiber section The corresponding vertical distance to the target;

[0101] express Target fiber length; express Target fiber length;

[0102] express With The relative target fiber length between the ends of the unit temperature measuring fiber sections; express With A relative first length between the ends of the unit temperature measuring optical fiber sections;

[0103] Indicates the diameter of the drainage pipe; Indicates the pitch of the temperature measuring optical fiber.

[0104] Step (3): Determine the target vertical distance of the first target temperature measuring point as the water level of the water flow in the vertical plane where the target temperature measuring point is located in the target drainage pipe section.

[0105] Specifically, in the embodiment of the present application, the vertical plane should be a vertical plane that is perpendicular to the intersection point of the drainage pipe corresponding to the target temperature measurement point; in actual applications, since the temperature measuring optical fiber is spirally arranged with equal pitch on the inner wall of the drainage pipe, at least two target temperature measurement points corresponding to each unit temperature measuring optical fiber segment are not in the same vertical plane; each target temperature measurement point is responsible for determining the water level of the water flow in the vertical plane where it is located.

[0106] It should be emphasized that if the target temperature measurement point indicates the boundary between air and silt, the water level of the water flow in the vertical plane where the target temperature measurement point is located should be 0; if the target temperature measurement point indicates the boundary between water flow and silt, the water level of the water flow in the vertical plane where the target temperature measurement point is located should be the diameter .

[0107] Step (4): Determine water level distribution data of the drainage pipe based on at least one water level.

[0108] Specifically, after determining the water level corresponding to each target temperature measurement point, the water levels corresponding to all target temperature measurement points included in the drainage pipe can be determined, and the water level distribution data of the drainage pipe can be obtained; in practical applications, the water level distribution data should be a collection of water level data in the drainage pipe. There are many ways to construct water level data, such as ( , ), , ) means that the length of the pipe between the port of the drainage pipe is The water level in the vertical plane is ; or constructed as ( , ), , ) means that the length of the optical fiber between the temperature measurement optical fiber and the starting point is The water level in the vertical plane is ; In practical applications, other forms of water level distribution data can also be determined according to actual needs.

[0109] In one implementation, the target information further includes: a second target temperature measurement point corresponding to the target temperature data, the second target temperature measurement point indicating the boundary between water flow and sludge inside the target drainage pipe section; if the target drainage pipe section is the second drainage pipe section, S130 further includes: steps (5) to (7), the details of which are as follows:

[0110] Step (5): According to the target optical fiber length of the second target temperature measuring point corresponding to the target drainage pipe section, determine the target vertical distance between the second target temperature measuring point and the horizontal plane where the bottom of the temperature measuring point section of the target drainage pipe section is located.

[0111] Specifically, if Figure 6 As shown, Figure 6 This is an example diagram of a second drainage pipe section provided in an embodiment of the present application. Figure 6 The horizontally extending cylinder in the figure is the drainage pipe, the horizontally extending dotted line indicates the horizontal plane of the water flow in the drainage pipe, and the dark area on the bottom side of the drainage pipe indicates the silt in the drainage pipe. Figure 6 There is water flow and silt in the drainage pipe, so the multiple drainage pipe sections included in the drainage pipe are all second drainage pipe sections; the first formula can also be applied to determine the target vertical distance of the second target temperature measuring point according to the target optical fiber length of the second target temperature measuring point. It only needs to replace the target optical fiber length of the first target temperature measuring point with the target optical fiber length of the second target temperature measuring point to obtain the target vertical distance of the second target temperature measuring point.

[0112] Step (6): determining the target vertical distance of the second target temperature measuring point as the thickness of the sludge in the vertical plane where the target temperature measuring point is located in the second drainage pipe section;

[0113] In practical applications, since the laying starting point of the temperature measuring optical fiber in the embodiment of the present application is set at the lowest point of the port of the drainage pipe, the four target temperature measuring points corresponding to the second drainage pipe section can be clearly distinguished as the first target temperature measuring point and the second target temperature measuring point;

[0114] like Figure 7 and Figure 8 As shown, Figure 7The third example diagram of temperature periodic data provided in the embodiment of the present application is as follows: Figure 8 This is a fourth example diagram of temperature periodic data provided in an embodiment of the present application. Figure 6 , Figure 7 and Figure 8 Marked in and The position is the target temperature data collected by the first target temperature measurement point. Figure 6 , Figure 7 and Figure 8 Marked in and The position is the target temperature data collected by the second target temperature measurement point. Indicates the fiber length of the unit temperature measurement fiber segment; Figure 3 and Figure 4 Similarly, differences in the external environment of the drainage pipe may result in Figure 7 and Figure 8 However, no matter how the temperature change trend is, what needs to be determined in the embodiment of the present application is the target temperature data indicating the temperature mutation, whether it is the target temperature data in the process of changing from high to low or the target temperature data in the process of changing from low to high.

[0115] Step (7): Determine silt distribution data of the drainage pipe based on at least one thickness.

[0116] Specifically, similar to the water level distribution data, the silt distribution data should be a collection of thickness data in the drainage pipe. There are many ways to construct thickness data, which can be specifically referred to the water level data construction form, and will not be elaborated here.

[0117] In one implementation, the water level distribution data includes the water level of the water flow in the vertical plane where each temperature measuring point is located, and the silt distribution data includes the thickness of the silt in the vertical plane where each temperature measuring point is located.

[0118] Specifically, after the water level distribution data and silt distribution data of the target temperature measuring point are determined, they can be fitted into corresponding curves and / or functions, and then the water level of the water flow in the vertical plane where each temperature measuring point in the first drainage pipe section is located, and the water level of the water flow in the vertical plane where each temperature measuring point in the second drainage pipe section is located and the thickness of the silt can be determined according to the corresponding curves and / or functions.

[0119] In addition, S130 also includes: step (8) to step (10), the details of which are as follows:

[0120] Step (8): Determine the first flow rate corresponding to the vertical plane where each temperature measuring point in the first drainage pipe section is located according to the water level distribution data.

[0121] Specifically, since the first drainage pipe section only includes air and water flow, after determining the water level distribution data corresponding to multiple first drainage pipe sections, the first flow rate corresponding to the vertical plane where each temperature measuring point in each first drainage pipe section is located can be calculated according to parameters such as the water level of the water flow and the diameter of the drainage pipe.

[0122] Step (9): Determine the second flow rate corresponding to the vertical plane where each temperature measuring point in the second drainage pipe section is located according to the water level distribution data and the silt distribution data.

[0123] Specifically, since the second drainage pipe section includes air, water flow and silt, after determining the water level distribution data and silt distribution data corresponding to multiple second drainage pipe sections, the second flow rate corresponding to the vertical plane where each temperature measuring point in each second drainage pipe section is located can be calculated according to parameters such as the water level of the water flow, the thickness of the silt and the diameter of the drainage pipe.

[0124] Step (10): Determine flow distribution data based on the first flow and the second flow.

[0125] Specifically, after respectively determining the first flow or second flow corresponding to the vertical plane where each target temperature measuring point is located in each first drainage pipe section and each second drainage pipe section, the flow distribution data of the entire drainage pipe can be determined; in actual applications, the water level distribution data should be a collection of flow data in the drainage pipe. There are many ways to construct flow data, and you can refer to the water level distribution data and silt distribution data mentioned above. The embodiments of the present application will not be repeated here.

[0126] In one implementation, step (8) includes: step (8.1), details of which are as follows:

[0127] Step (8.1): determining the first flow corresponding to the vertical plane where each temperature measuring point is located in each first drainage pipe section according to the water level of the water flow in the vertical plane where each temperature measuring point is located in the water level distribution data and the second formula;

[0128] The second formula is as follows:

[0129]

[0130] In the formula, Indicates the first drainage pipe section The first flow rate corresponding to the vertical plane where the temperature measuring points are located;

[0131] Indicates the first drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located;

[0132] Indicates the diameter of the drainage pipe; Indicates the slope of the drainage pipe;

[0133] Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe.

[0134] And, step (9) includes: step (9.1), details of which are as follows:

[0135] Determine the second flow rate corresponding to the vertical plane where each temperature measuring point in the second drainage pipe section is located according to the water level distribution data, the silt distribution data and the third formula;

[0136] Among them, the third formula is as follows:

[0137]

[0138] In the formula, Indicates the second drainage pipe section The second flow rate corresponding to the vertical plane where the temperature measuring points are located;

[0139] Indicates the diameter of the drainage pipe; Indicates the slope of the drainage pipe;

[0140] Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe;

[0141] Indicates the second drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located;

[0142] Indicates the second drainage pipe section The thickness of the silt in the vertical plane where the temperature measuring point is located.

[0143] Specifically, in order to further improve the determination of the first flow rate or the second flow rate corresponding to the vertical plane where each temperature measuring point in the first drainage pipe section and the second drainage pipe section is located, the embodiment of the present application provides steps (8.1) and (9.1) for more accurately determining the first flow rate or the second flow rate corresponding to the vertical plane where each temperature measuring point in the first drainage pipe section and the second drainage pipe section is located.

[0144] Once the water level of the water flow in the vertical plane where each temperature measuring point in the first drainage pipe section is located, the water level of the water flow in the vertical plane where each temperature measuring point in the second drainage pipe section is located, and the thickness of the silt are determined, the first flow rate or the second flow rate corresponding to the corresponding vertical plane can be calculated according to the second formula or the third formula.

[0145] In one implementation, the derivation process of the second formula and the third formula is as follows:

[0146] like Fig. 9 As shown, Fig. 9 This is an example diagram of a vertical surface in the second drainage pipe section provided in an embodiment of the present application, used to show the relative positional relationship between the water flow and sludge in the second drainage pipe section and the second drainage pipe section. Indicates the second drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located, Indicates the second drainage pipe section The thickness of the silt in the vertical plane where the temperature measuring point is located, Indicates the diameter of the drainage pipe.

[0147] In practical applications, the roughness coefficient It can be determined according to the material of the drainage pipe. If the material of the drainage pipe is concrete or reinforced concrete, the roughness coefficient It can be confirmed to be 0.013~0.014; In addition, the embodiment of the present application also has a roughness coefficient Introduced correction factor In the early stage of monitoring, a mobile flow monitoring instrument or system can be combined to perform short-term flow monitoring to obtain the actual flow; the actual flow is compared with the second flow and / or the third formula calculated by the second formula and / or the third formula provided in the embodiment of the present application to obtain the correction coefficient of the monitoring pipe section. .

[0148] When the second drainage pipe section is in a non-full pipe flow state, The second flow rate corresponding to the vertical plane where the temperature measurement point is located The flow calculation formula is as follows:

[0149] ;

[0150] In the formula, Indicates the diameter of the drainage pipe; Indicates the slope of the second drainage pipe section;

[0151] Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe; represents the flow area, represents the hydraulic radius;

[0152] Further, the embodiments of the present application are based on Fig. 9 Build auxiliary parameters is the angle variable, calculate the angle variable and wet week The relevant calculation formula is as follows:

[0153] ;

[0154] ;

[0155] ;

[0156]

[0157]

[0158]

[0159] ;

[0160]

[0161] ;

[0162] Furthermore, according to the water level and thickness Calculate the flow area in the second drainage pipe section and wet week The relevant calculation formula is as follows:

[0163] ;

[0164] ;

[0165] According to the above formula, The calculation formula is organized into the third formula, the details are as follows:

[0166] ;

[0167] In actual operation, when the drainage pipe section is the first drainage pipe section, the following second formula can be applied to calculate , the second formula is as follows:

[0168]

[0169] In one implementation, if the first The thickness of the silt in the vertical plane where the temperature measuring point is located , the third formula can be used to calculate the The second flow rate corresponding to the vertical plane where the temperature measuring point is located.

[0170] In a second aspect, the present application provides a drainage pipe monitoring device, such as Fig.10 As shown, Fig.10 This is a structural example diagram of a drainage pipe monitoring device provided in an embodiment of the present application, the device includes: a data acquisition module 310, a first data processing module 320 and a second data processing module 330;

[0171] The data acquisition module 310 is used to control the temperature measurement optical fiber. The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Set temperature distribution period data;

[0172] in, is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; Unit temperature measuring optical fiber section and The temperature distribution cycle data of each group is in one-to-one correspondence; the temperature distribution cycle data includes the temperature data collected from multiple temperature measurement points in the unit temperature measurement optical fiber segment for the drainage pipe;

[0173] The first data processing module 320 is used to determine target information of target temperature data indicating a sudden temperature change in the temperature distribution period data;

[0174] The second data processing module 330 is used to determine the pipeline monitoring data of the drainage pipeline according to the target information; wherein the pipeline monitoring data includes: water level distribution data, silt distribution data and flow distribution data.

[0175] In one implementation, the target information includes: the number of target temperature data and a first target temperature measurement point corresponding to the target temperature data, the first target temperature measurement point indicating the junction of air and water flow inside the target drainage pipe section; the drainage pipe includes: Unit drainage pipe section, Unit temperature measuring optical fiber section and The second data processing module 330 is also used to convert The unit drainage pipe section corresponding to the temperature distribution period data in which the number of target temperature data in the group temperature distribution period data is greater than or equal to 2 is determined as the target drainage pipe section; wherein the target drainage pipe section is a unit drainage pipe section in which air and water flow or air, water flow and silt exist;

[0176] The second data processing module 330 is further used to determine the target vertical distance between the first target temperature measuring point and the horizontal plane where the bottom of the temperature measuring point section of the target drainage pipe section is located according to the target optical fiber length of the first target temperature measuring point corresponding to the target drainage pipe section; wherein the target optical fiber length is the optical fiber length between the first target temperature measuring point and the starting point of the temperature measuring optical fiber;

[0177] The second data processing module 330 is further used to determine the target vertical distance of the first target temperature measuring point as the water level of the water flow in the vertical plane where the target temperature measuring point is located in the target drainage pipe section;

[0178] The second data processing module 330 is further used to determine water level distribution data of the drainage pipe according to at least one water level.

[0179] In one implementation, the starting point of the temperature measuring optical fiber is set at the lowest point of the port of the drainage pipe; the target drainage pipe section includes: a first drainage pipe section, which is a unit drainage pipe section with air and water flow inside; the second data processing module 330 is also used to The unit drainage pipe section corresponding to the temperature distribution period data having the number of target temperature data equal to 2 in the group of temperature distribution period data is determined as the first drainage pipe section.

[0180] In one implementation, the starting point of the temperature measuring optical fiber is set at the lowest point of the port of the drainage pipe; the target drainage pipe section includes: a second drainage pipe section, which is a unit drainage pipe section with air, water flow and silt inside; the second data processing module 330 is also used to The unit drainage pipe segment corresponding to the temperature distribution period data having the number of target temperature data equal to 4 in the group of temperature distribution period data is determined as the second drainage pipe segment.

[0181] In one implementation, the target information further includes: a second target temperature measuring point corresponding to the target temperature data, the second target temperature measuring point indicating the boundary between the water flow and the silt inside the target drainage pipe section; if the target drainage pipe section is the second drainage pipe section, the second data processing module 330 is further used to determine the target vertical distance between the second target temperature measuring point and the horizontal plane where the bottom of the temperature measuring point section of the target drainage pipe section is located according to the target optical fiber length of the second target temperature measuring point corresponding to the target drainage pipe section;

[0182] The second data processing module 330 is further used to determine the target vertical distance of the second target temperature measuring point as the thickness of the sludge in the vertical plane where the target temperature measuring point is located in the second drainage pipe section;

[0183] The second data processing module 330 is further used to determine silt distribution data of the drainage pipe according to at least one thickness.

[0184] In one implementation, the second data processing module 330 is further used to determine a target vertical distance of the target temperature measurement point according to the coordinates of the target temperature measurement point and the first formula;

[0185] Among them, the first formula is as follows:

[0186] ;

[0187] ;

[0188] ; ;

[0189] In the formula, Indicates The first target temperature measurement point in the unit temperature measurement optical fiber section The corresponding vertical distance to the target; Indicates The second first target temperature measurement point in the unit temperature measurement optical fiber section The corresponding vertical distance to the target;

[0190] express Target fiber length; express Target fiber length;

[0191] express With The relative target fiber length between the ends of the unit temperature measuring fiber sections; express With A relative first length between the ends of the unit temperature measuring optical fiber sections;

[0192] Indicates the diameter of the drainage pipe; Indicates the pitch of the temperature measuring optical fiber.

[0193] In one implementation, the water level distribution data includes the water level of the water flow in the vertical plane where each temperature measuring point is located, and the silt distribution data includes the thickness of the silt in the vertical plane where each temperature measuring point is located; the second data processing module 330 is further used to determine the first flow corresponding to the vertical plane where each temperature measuring point in the first drainage pipe section is located according to the water level distribution data;

[0194] The second data processing module 330 is further used to determine the second flow corresponding to the vertical plane where each temperature measuring point in the second drainage pipe section is located according to the water level distribution data and the silt distribution data;

[0195] The second data processing module 330 is further configured to determine flow distribution data according to the first flow and the second flow.

[0196] In one implementation, the second data processing module 330 is further used to determine the first flow corresponding to the vertical plane where each temperature measuring point in the first drainage pipe section is located according to the second formula in the water level distribution data;

[0197] The second formula is as follows:

[0198]

[0199] In the formula, Indicates the first drainage pipe section The first flow rate corresponding to the vertical plane where the temperature measuring points are located;

[0200] Indicates the first drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located;

[0201] Indicates the diameter of the drainage pipe; Indicates the slope of the drainage pipe;

[0202] Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe.

[0203] In one implementation, the second data processing module 330 is further used to determine the second flow corresponding to the vertical plane where each temperature measuring point in the second drainage pipe section is located according to the water level distribution data, the silt distribution data and the third formula;

[0204] Among them, the third formula is as follows:

[0205]

[0206] In the formula, Indicates the second drainage pipe section The second flow rate corresponding to the vertical plane where the temperature measuring points are located;

[0207] Indicates the diameter of the drainage pipe; Indicates the slope of the drainage pipe;

[0208] Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe;

[0209] Indicates the second drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located;

[0210] Indicates the second drainage pipe section The thickness of the silt in the vertical plane where the temperature measuring point is located.

[0211] In a third aspect, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, steps S110 to S130 provided in the above embodiment are implemented.

[0212] In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, steps S110 to S130 of the above embodiment are executed.

[0213] Fifth, the computer program product provided in the present application includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the method in the previous method embodiment. The specific implementation can refer to steps S110~S130 of the method embodiment, which will not be repeated here.

[0214] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0215] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0216] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0217] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0218] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0219] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drainage pipeline monitoring method, characterized in that: The method comprises: Control temperature measurement optical fiber includes The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Set temperature distribution period data; Among them, the is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; The unit temperature measuring optical fiber segment and The temperature distribution period data of each group is in one-to-one correspondence; the temperature distribution period data includes the temperature data collected by multiple temperature measurement points in the unit temperature measurement optical fiber segment for the drainage pipe; the temperature measurement optical fiber is divided into Unit temperature measurement optical fiber segments; the drainage pipe is divided into The starting point of the temperature measuring optical fiber is located at the lowest point of the drainage pipe. Determine target information of target temperature data indicating a sudden temperature change in the temperature distribution period data; Determining pipeline monitoring data of the drainage pipeline according to the target information; The pipeline monitoring data includes: water level distribution data, silt distribution data and flow distribution data; the water level distribution data includes the water level of the water flow in the vertical plane where each of the temperature measuring points is located, and the silt distribution data includes the thickness of the silt in the vertical plane where each of the temperature measuring points is located; The determining of the pipeline monitoring data of the drainage pipeline according to the target information further includes: Determine the second flow rate corresponding to the vertical plane where each of the temperature measuring points in the second drainage pipe section is located according to the water level distribution data, the silt distribution data and the third formula; the second drainage pipe section is a drainage pipe section in which air, water flow and silt exist; Wherein, the third formula is as follows: In the formula, Indicates the second drainage pipe section a second flow rate corresponding to the vertical plane where the temperature measuring point is located; Indicates the diameter of the drainage pipe; Indicates the slope of the drainage pipe; Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe; Indicates the second drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located; Indicates the second drainage pipe section The thickness of the silt in the vertical plane where the temperature measuring point is located, which should be the silt thickness corresponding to the point, can be calculated by using the silt thickness near the target temperature measuring point, or by using fitting interpolation to obtain the corresponding thickness data and then substituted for calculation; the target temperature measuring point indicates the boundary between the air and water flow inside the target drainage pipe section or indicates the boundary between the water flow and silt inside the target drainage pipe section; The first target temperature measuring point indicates the boundary between the air and water flow inside the target drainage pipe section; the second target temperature measuring point indicates the boundary between the water flow and silt inside the target drainage pipe section; the target drainage pipe section is the unit drainage pipe section in which there is air and water flow or air, water flow and silt.

2. The method according to claim 1, characterized in that The target information includes: the number of the target temperature data and the first target temperature measurement point corresponding to the target temperature data; the drainage pipeline includes: Unit drainage pipe section, The unit temperature measuring optical fiber segment and The unit drainage pipe sections are in one-to-one correspondence; the pipeline monitoring data of the drainage pipe is determined according to the target information, including: Will The unit drainage pipe segment corresponding to the temperature distribution period data in which the number of the target temperature data in the temperature distribution period data is greater than or equal to 2 is determined as the target drainage pipe segment; Determine, according to the target optical fiber length of the first target temperature measuring point corresponding to the target drainage pipe section, a target vertical distance between the first target temperature measuring point and the horizontal plane where the bottom of the temperature measuring point section of the target drainage pipe section is located; Wherein, the target optical fiber length is the optical fiber length between the first target temperature measurement point and the starting point of the temperature measurement optical fiber; Determine the target vertical distance of the first target temperature measuring point as the water level of the water flow in the vertical plane where the target temperature measuring point is located in the target drainage pipe section; The water level distribution data of the drainage pipe is determined according to at least one of the water levels.

3. The method according to claim 2, characterized in that The starting point of the temperature measuring optical fiber is set at the lowest point of the port of the drainage pipe; the target drainage pipe section includes: a first drainage pipe section, which is the unit drainage pipe section with air and water flow inside; The unit drainage pipe segment corresponding to the temperature distribution period data in which the number of the target temperature data in the temperature distribution period data is greater than or equal to 2 is determined as the target drainage pipe segment, including: Will The unit drainage pipe segment corresponding to the temperature distribution periodic data in which the number of the target temperature data in the group of temperature distribution periodic data is equal to 2 is determined as the first drainage pipe segment.

4. The method according to claim 3, characterized in that The temperature measuring optical fiber is arranged at the lowest point of the port of the drainage pipe; the target drainage pipe section includes: a second drainage pipe section; The unit drainage pipe segment corresponding to the temperature distribution period data in which the number of the target temperature data in the temperature distribution period data is greater than or equal to 2 is determined as the target drainage pipe segment, including: Will The unit drainage pipe segment corresponding to the temperature distribution periodic data in which the number of the target temperature data in the group of temperature distribution periodic data is equal to 4 is determined as the second drainage pipe segment.

5. The method according to claim 4, characterized in that The target information also includes: a second target temperature measurement point corresponding to the target temperature data; if the target drainage pipe section is the second drainage pipe section, the pipeline monitoring data of the drainage pipe is determined according to the target information, and further includes: Determine the target vertical distance between the second target temperature measuring point and the horizontal plane where the bottom of the temperature measuring point section of the target drainage pipe section is located according to the target optical fiber length of the second target temperature measuring point corresponding to the target drainage pipe section; Determine the target vertical distance of the second target temperature measuring point as the thickness of the sludge in the vertical plane where the target temperature measuring point is located in the second drainage pipe section; Based on at least one of the thicknesses, the silt distribution data of the drainage pipe is determined.

6. The method according to claim 2, characterized in that The step of determining a target vertical distance between the first target temperature measuring point and a horizontal plane where the bottom of a temperature measuring point section of the target drainage pipe section is located according to a target optical fiber length of the first target temperature measuring point corresponding to the target drainage pipe section comprises: Determine the target vertical distance of the first target temperature measuring point according to the coordinates of the first target temperature measuring point and the first formula; The first formula is as follows: ； ； ； ； In the formula, Indicates The first target temperature measurement point in the unit temperature measurement optical fiber segment The corresponding vertical distance of the target; Indicates The second first target temperature measurement point in the unit temperature measurement optical fiber segment The corresponding vertical distance of the target; express Target fiber length; express Target fiber length; express With The relative target optical fiber length between the ends of the unit temperature measuring optical fiber sections; express With a relative first length between the ends of the unit temperature measuring optical fiber segments; Indicates the diameter of the drainage pipe; represents the pitch of the temperature measuring optical fiber.

7. The method according to claim 4, characterized in that The determining of the pipeline monitoring data of the drainage pipeline according to the target information further includes: Determine, according to the water level distribution data, a first flow rate corresponding to a vertical plane where each of the temperature measuring points in the first drainage pipe section is located; Determine, according to the water level distribution data and the sludge distribution data, a second flow rate corresponding to a vertical plane where each of the temperature measuring points in the second drainage pipe section is located; The flow distribution data is determined according to the first flow and the second flow.

8. The method according to claim 7, characterized in that Determining the first flow corresponding to the vertical plane where each of the temperature measuring points in the first drainage pipe section is located according to the water level distribution data includes: Determine, according to the water level distribution data and the second formula, a first flow rate corresponding to a vertical plane where each of the temperature measuring points in the first drainage pipe section is located; The second formula is as follows: In the formula, Indicates the first drainage pipe section a first flow rate corresponding to the vertical plane where the temperature measuring point is located; Indicates the first drainage pipe section The water level of the water flow in the vertical plane where the temperature measuring point is located; Indicates the diameter of the drainage pipe; Indicates the slope of the drainage pipe; Indicates the preset correction factor; Indicates the roughness coefficient of the preset drainage pipe.

9. A drainage pipe monitoring device, characterized in that: For implementing the method of claim 1, the device comprises: a data acquisition module, a first data processing module and a second data processing module; The data acquisition module is used to control the temperature measurement optical fiber. The unit temperature measurement optical fiber segment is used to collect the temperature data of the drainage pipe. Set temperature distribution period data; Among them, the is a positive integer; the temperature measuring optical fiber is spirally arranged on the inner wall of the drainage pipe with equal pitch; each unit temperature measuring optical fiber segment corresponds to a spiral period; The unit temperature measuring optical fiber segment and The temperature distribution period data of each group are in one-to-one correspondence; the temperature distribution period data includes temperature data collected from multiple temperature measurement points in the unit temperature measurement optical fiber segment for the drainage pipe; The first data processing module is used to determine target information of target temperature data indicating a sudden temperature change in the temperature distribution period data; The second data processing module is used to determine the pipeline monitoring data of the drainage pipeline according to the target information; Wherein, the pipeline monitoring data includes: water level distribution data, silt distribution data and flow distribution data.

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