A method and device for monitoring the stress condition of a transmission tower

Abstract

The present invention provides a method and device for monitoring the stress condition of a transmission tower, belonging to the technical field of safety monitoring of transmission towers. Based on an established transmission tower simulation structure model, the stress state of the transmission tower is monitored and analyzed, and combined with the actual situation of the actual scene, the situation in which the foundation of the transmission tower is corroded due to the change in the thickness of the foundation protective layer is quickly and accurately discovered, and the monitoring is realized in a remote manner without the need for on-site detection, making the monitoring process more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of safety monitoring of power transmission towers, and in particular to a method and device for monitoring the stress condition of power transmission towers. Background Art

[0002] Transmission towers are structures used to support transmission lines, usually made of reinforced concrete or steel. They play the role of suspending transmission lines in the air to transmit electricity, so transmission towers are often installed in harsh environmental areas. In order to better protect the foundation of the transmission tower, a layer of protective material is set around the tower foundation to form a foundation protection layer for the transmission tower. Its main function is to prevent the foundation from being eroded and damaged by external environmental factors and extend the service life of the tower foundation. However, in corrosive soil foundations, corrosive soil has a corrosive effect on the foundation. If the thickness of the foundation protection layer does not meet the requirements of the specification, the steel bars of the transmission tower will be corroded by the corroded soil, thereby affecting the structural force. During use, the foundation protection layer may gradually reduce in thickness due to force, environmental factors, material aging, etc., which may lead to its failure to achieve the desired effect.

[0003] At present, the existing monitoring method for the thickness of the foundation protection layer is to measure the foundation protection layer through regular non-destructive detection technology (such as ultrasonic thickness gauge, magnetic method, laser scanning, etc.) to obtain accurate thickness data. By comparing and analyzing the monitoring data with historical data, it can be determined whether there is a trend in the thickness of the foundation protection layer, so as to assess whether it is gradually decreasing during use. The main disadvantage of this method is that it requires manual on-site measurement on a regular basis. However, since the installation environment of some transmission towers is relatively harsh and the foundation is often completely buried in the soil, it is difficult to implement manual on-site detection and it costs more resources.

[0004] Therefore, how to effectively monitor the status of transmission towers is a problem that needs to be solved urgently. Summary of the invention

[0005] In order to improve the above problems, the present invention provides a method and device for monitoring the stress condition of a transmission tower.

[0006] According to a first aspect of an embodiment of the present invention, a method for monitoring the stress condition of a transmission tower is provided, the method comprising:

[0007] Establish a simulation structure model of the transmission tower, and add sensing points of stress sensors to the simulation structure model according to the actual installation conditions of the transmission tower;

[0008] Acquire actual stress data obtained by stress sensors at different positions of the transmission tower in the actual scene, and adjust the established simulation structure model according to the actual stress data obtained to obtain a simulation structure model matching the actual scene;

[0009] Perform mechanical simulation analysis based on the adjusted simulation structure model, and obtain simulation stress data of different base protection layer thicknesses for the sensing points as training data sets;

[0010] The adjusted simulation structure model is trained using the data set to establish a mapping relationship between stress data of different sensing points and thicknesses of different basic protective layers; the mapping relationship includes a numerical feature mapping relationship and a curve feature mapping relationship in a time domain interval;

[0011] Continuously monitor the transmission tower to obtain the actual stress data within a certain time domain interval, input the obtained actual stress data into the trained simulation structure model, and obtain the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data;

[0012] It is determined whether the triggering condition for triggering the monitoring and early warning action is met according to the obtained thickness of the basic protective layer. If the triggering condition is met, the corresponding monitoring and early warning action is executed.

[0013] Optionally, the step of performing mechanical simulation analysis based on the adjusted simulation structure model to obtain simulation stress data of different base protection layer thicknesses for the sensing points specifically includes:

[0014] According to the installation situation of the transmission tower in the actual scene, the base protection layer is divided into regions;

[0015] Different values ​​of the thickness of the foundation protection layer are taken for different areas, and simulation analysis is carried out respectively to obtain the simulation stress data under the corresponding conditions.

[0016] Optionally, the step of adjusting the established simulation structure model according to the acquired actual stress data to obtain a simulation structure model matching the actual scene specifically includes:

[0017] The actual stress data is compared with the theoretical stress data calculated by the established simulation structure model, and based on the difference between the simulation stress data and the actual stress data, the simulation structure model is adjusted to obtain a simulation structure model that matches the actual scene.

[0018] Optionally, the step of obtaining the thickness of the base protective layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data specifically includes:

[0019] Extract the numerical features and curve features corresponding to different sensing points in the actual stress data;

[0020] According to the mapping relationship, the values ​​of the thickness of the basic protective layer in different areas are obtained respectively.

[0021] Optionally, the step of obtaining values ​​of thicknesses of the basic protective layer in different regions respectively according to the mapping relationship specifically includes:

[0022] For different regions, the value of the basic protective layer thickness that has the highest matching degree with the numerical feature and the curve feature is used as the basic protective layer thickness corresponding to the actual stress data.

[0023] Optionally, judging whether a triggering condition for triggering a monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and if the triggering condition is met, executing the corresponding monitoring and early warning action step specifically includes:

[0024] When it is determined that the trigger condition is met, the specific area where the thickness of the basic protective layer does not meet the standard is determined according to the thickness of the basic protective layer that specifically meets the trigger condition in the actual stress data;

[0025] Execute monitoring and early warning actions for the area.

[0026] Optionally, judging whether a triggering condition for triggering a monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and if the triggering condition is met, executing a corresponding monitoring and early warning action step specifically includes:

[0027] When it is determined that the trigger condition is met, the severity of the basic protective layer thickness not meeting the standard is determined according to the value of the basic protective layer thickness that specifically meets the trigger condition;

[0028] Execute monitoring and early warning actions corresponding to the severity level.

[0029] Optionally, the step of performing mechanical simulation analysis based on the adjusted simulation structure model to obtain simulation stress data of different basic protective layer thicknesses for the sensing points specifically includes:

[0030] When performing mechanical simulation analysis, at least one external factor is introduced and simulated together with the thickness of the foundation protection layer to obtain simulated stress data; the external factors include wind load, temperature, ice and snow load, and transmission line load.

[0031] Optionally, the step of continuously monitoring the transmission tower to obtain actual stress data within a certain time domain interval, inputting the obtained actual stress data into the trained simulation structure model, and obtaining the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data specifically includes:

[0032] Acquire actual external factor data corresponding to the introduced external factors within a certain time domain interval in the actual scene;

[0033] The external factor data and the actual stress data are input into the trained simulation structure model together. Based on the numerical characteristics and curve characteristics of the actual stress data, the thickness of the foundation protection layer corresponding to the actual stress data under the influence of external factors is obtained.

[0034] A second aspect of the embodiments of the present invention provides a device for monitoring the stress condition of a transmission tower, the device comprising:

[0035] A model building unit is used to build a simulation structure model of the transmission tower, and add sensing points of the stress sensor in the simulation structure model according to the actual installation situation of the transmission tower;

[0036] The model adjustment unit is used to obtain actual stress data obtained by stress sensors at different positions of the transmission tower in the actual scene, and adjust the established simulation structure model according to the actual stress data obtained to obtain a simulation structure model matching the actual scene;

[0037] A data generating unit, used for performing mechanical simulation analysis based on the adjusted simulation structure model, and obtaining simulation stress data of different base protection layer thicknesses for the sensing points as a training data set;

[0038] A model training unit, used to train the adjusted simulation structure model using the data set, and establish a mapping relationship between stress data of different sensing points and different thicknesses of basic protective layers; the mapping relationship includes a numerical feature mapping relationship and a curve feature mapping relationship in a time domain interval;

[0039] The data monitoring unit is used to continuously monitor the transmission tower, obtain the actual stress data within a certain time domain interval, input the obtained actual stress data into the trained simulation structure model, and obtain the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data;

[0040] The monitoring and early warning unit is used to determine whether the triggering conditions for triggering the monitoring and early warning action are met according to the obtained thickness of the basic protective layer, and if the triggering conditions are met, perform the corresponding monitoring and early warning action.

[0041] The beneficial effects of the present invention are:

[0042] The present invention provides a method and device for monitoring the stress condition of a transmission tower. Based on an established transmission tower simulation structure model, the stress state of the transmission tower is monitored and analyzed. In combination with the actual situation of the actual scene, the corrosion of the transmission tower foundation caused by the change in the thickness of the foundation protective layer is quickly and accurately discovered. The monitoring is realized in a remote manner without the need for on-site testing, making the monitoring process more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention 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 creative work.

[0044] Figure 1 A method flow chart of a method for monitoring the stress condition of a transmission tower according to an embodiment of the present invention;

[0045] Figure 2 The figure is a functional module block diagram of a device for monitoring the stress condition of a transmission tower according to an embodiment of the present invention.

[0046] Reference numerals:

[0047] Model building unit 110; model adjustment unit 120; data generation unit 130; model training unit 140; data monitoring unit 150; monitoring and early warning unit 160. DETAILED DESCRIPTION

[0048] In order to better protect the foundation of the transmission tower, a layer of protective material is set around the tower foundation to form the foundation protection layer of the transmission tower. Its main function is to prevent the foundation from being eroded and damaged by external environmental factors and extend the service life of the tower foundation. However, in the corrosive soil foundation, the corrosive soil has a corrosive effect on the foundation. If the thickness of the foundation protection layer does not meet the requirements of the specification, the steel bars of the transmission tower will be corroded by the corrosive soil, thereby affecting the structural force. During use, the thickness of the foundation protection layer may gradually decrease due to force, environmental factors, material aging, etc., which may lead to it not achieving the ideal effect.

[0049] At present, the existing monitoring method for the thickness of the foundation protection layer is to measure the foundation protection layer through regular non-destructive detection technology (such as ultrasonic thickness gauge, magnetic method, laser scanning, etc.) to obtain accurate thickness data. By comparing and analyzing the monitoring data with historical data, it can be determined whether there is a trend in the thickness of the foundation protection layer, so as to assess whether it is gradually decreasing during use. The main disadvantage of this method is that it requires manual on-site measurement on a regular basis. However, since the installation environment of some transmission towers is relatively harsh and the foundation is often completely buried in the soil, it is difficult to implement manual on-site detection and it costs more resources.

[0050] Therefore, how to effectively monitor the status of transmission towers is a problem that needs to be solved urgently.

[0051] In view of this, the designers of the present invention have designed a method and device for monitoring the stress condition of a transmission tower. Based on the established transmission tower simulation structure model, the stress state of the transmission tower is monitored and analyzed. Combined with the actual situation of the actual scene, the corrosion of the transmission tower foundation caused by the change in the thickness of the foundation protective layer can be quickly and accurately discovered. The monitoring is achieved remotely without the need for on-site testing, making the monitoring process more convenient.

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the present invention, it should be noted that the terms "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0058] See also Figure 1 , a method for monitoring the stress condition of a transmission tower provided by an embodiment of the present invention, the method comprising:

[0059] Step S101, establish a simulation structure model of the transmission tower, and add sensing points of stress sensors in the simulation structure model according to the actual installation conditions of the transmission tower.

[0060] The simulation structure model of the transmission tower can be established based on the transmission tower design structure diagram through modeling software with relevant functions. Then, according to the actual installation situation of the power tower on site, the installation position of the stress sensor is determined, and the sensing points corresponding to the installation position are added to the established simulation structure model to facilitate subsequent analysis and keep it consistent with the actual scene.

[0061] It should be noted that in different actual scenarios, the design structure of the transmission tower used may be the same, but due to different specific scenarios, it will be set up in combination with the on-site terrain. Therefore, each scenario is different. When establishing a simulation structural model, the basic structure of the transmission tower can be determined first, and then combined with the on-site scenario and the installation location of the stress sensor to obtain the corresponding simulation structural model.

[0062] Step S102, obtaining actual stress data obtained by stress sensors at different positions of the transmission tower in the actual scene, and adjusting the established simulation structure model according to the obtained actual stress data to obtain a simulation structure model matching the actual scene.

[0063] The simulation structural model established at this stage is only a basic model based on theoretical knowledge. On this basis, the actual installation conditions of the transmission tower in the actual scenario must be considered to obtain a more accurate model. Therefore, it is necessary to obtain the actual stress data, and then adjust the simulation structural model according to the actual stress data to obtain a simulation structural model that matches the actual scenario.

[0064] The specific operation method is to first calculate the theoretical stress data through the established simulation structure model, and then compare the actual stress data with the theoretical stress data calculated by the established simulation structure model. There is a certain difference between the two, and then adjust the simulation structure model based on the difference between the simulation stress data and the actual stress data to obtain a simulation structure model that matches the actual scene. The adjusted simulation structure model can more accurately reflect the current situation of the transmission tower, and better results can be achieved in the subsequent training and analysis process.

[0065] The actual stress data used for adjustment is preferably obtained in the actual scene just after the construction of the transmission tower is completed, or after the last repair of the foundation protection layer. This can reflect the optimal state of the transmission tower, so as to compare with the theoretical stress data.

[0066] Step S103, performing mechanical simulation analysis based on the adjusted simulation structure model, and obtaining simulation stress data of different basic protective layer thicknesses for the sensing points as training data sets.

[0067] After the simulation structure model is established, sufficient data is required to form a data set for training. The simulated stress data of each sensing point can be obtained for different thicknesses of the basic protective layer. The thickness of the basic protective layer is set according to a certain numerical interval, including those within the normal range and those that do not meet the standard, so as to cover different situations as much as possible.

[0068] As a preferred embodiment of the present invention, when different thicknesses of the basic protective layer are divided, further subdivision can be performed to obtain more simulation data. That is, the basic protective layer can be divided into regions according to the installation conditions of the transmission tower in the actual scene. The basic protective layer is divided into multiple regions, and then different values ​​of the thickness of the basic protective layer are taken for different regions, and as many combinations as possible are formed, and simulation analysis is performed separately to obtain simulation stress data under corresponding conditions, so as to cover various situations in the actual scene as much as possible.

[0069] For example, the basic protective layer can be divided into N areas, and then the thickness of the basic protective layer can be divided into 5 different values, which can form N fifth power cases.

[0070] It should be noted that for different regions, it is possible that not all five different values ​​are taken. Some extreme value combinations can be abandoned for analysis and simulation to reduce the amount of data.

[0071] Through the above simulation analysis process, enough data for training can be obtained.

[0072] Step S104, using the data set to train the adjusted simulation structure model, and establishing a mapping relationship between stress data of different sensing points and different thicknesses of basic protective layers; the mapping relationship includes a numerical feature mapping relationship and a curve feature mapping relationship in a time domain interval.

[0073] Through the constructed data set, the simulation structure model is trained to establish the mapping relationship between the stress data of different sensing points and the thickness of different basic protective layers. Through this mapping relationship, after obtaining the actual stress data later, the corresponding basic protective layer thickness can be predicted.

[0074] Specifically, the mapping relationship includes two dimensions: numerical feature mapping relationship and curve feature mapping relationship in the time domain interval. The numerical feature mapping relationship reflects the correlation between the stress value and the thickness of the basic protective layer, and the curve feature mapping relationship in a certain time domain interval reflects the correlation between the change of the stress value in the time interval and the thickness of the basic protective layer. Combining the reflection of these two dimensions, the influence of the change of the thickness of the basic protective layer on the stress data can be more accurately expressed.

[0075] Step S105, continuously monitor the transmission tower to obtain actual stress data within a certain time domain interval, input the obtained actual stress data into the trained simulation structure model, and obtain the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data.

[0076] After the training of the adjusted simulation structure model is completed, the stress condition of the transmission tower can be monitored based on the simulation structure model. In actual operation, the actual stress data obtained within a certain time interval is input into the trained simulation structure model. Since the simulation model has obtained the mapping relationship between the stress data of different sensing points and the thickness of different basic protective layers through training, the thickness of the basic protective layer corresponding to the actual stress data can be predicted based on the mapping relationship.

[0077] The specific operation method is to extract the numerical features and curve features corresponding to different sensing points in the actual stress data; and obtain the values ​​of the basic protective layer thickness in different regions according to the mapping relationship. Among them, for different regions, the value of the basic protective layer thickness with the highest matching degree with the numerical features and the curve features is used as the basic protective layer thickness corresponding to the actual stress data.

[0078] When matching numerical features, the difference of the numerical values ​​is calculated, and the case with the smallest difference is selected, which is the case with the highest matching degree. For curve feature matching, the similarity of the curves can be calculated, and the case with the highest similarity can be selected. Since the final matching degree needs to be determined by combining the situations of two dimensions, weight values ​​can be set for each dimension, and the weight values ​​can be continuously adjusted according to the subsequent prediction accuracy until the highest prediction accuracy can be achieved.

[0079] Step S106, judging whether the triggering condition for triggering the monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and if the triggering condition is met, executing the corresponding monitoring and early warning action.

[0080] After obtaining the thickness of the foundation protection layer, it is necessary to determine whether the triggering conditions for triggering the monitoring and early warning action are met. The setting of the triggering conditions is based on the engineering quality requirements on the one hand, and on the other hand, it is necessary to determine the appropriate value in combination with the actual installation conditions of the transmission tower. As a preferred method, different triggering conditions can be set for different divided areas.

[0081] On the basis of the above scheme, when comparing the thickness of the basic protective layer that meets the trigger condition in the actual stress data with the trigger condition, the data of each stress sensor is compared in turn. Then, based on the overall comparison of multiple stress sensors, in addition to determining whether there is a problem, it is also possible to further determine where the specific area where the thickness of the basic protective layer does not meet the standard is. Since the stress sensors in the actual scene correspond one-to-one to the sensing points in the simulation model, simulation data with different basic protective layer thicknesses set for different areas are obtained during simulation analysis. Therefore, when comparing the data of the actual scene, the specific area where the thickness of the basic protective layer does not meet the standard can be determined based on the correspondence between the simulation data and the actual scene. Then on this basis, the monitoring and early warning actions performed are also monitoring and early warning actions for that area.

[0082] As a preferred implementation mode of the embodiment of the present invention, in addition to determining the specific area where the thickness of the basic protective layer does not meet the standard, the severity of the basic protective layer thickness not meeting the standard can also be determined. The principle is still based on the correspondence between simulation data and actual scenes. Due to the analysis of various combinations of different thicknesses in different areas, it is possible to reversely analyze the area where the basic protective layer thickness does not meet the standard in the actual scene, and to determine which range the basic protective layer thickness value belongs to, thereby facilitating further clarification of the severity of the problem. The subsequent monitoring and early warning actions performed are also monitoring and early warning actions for this severity.

[0083] As other implementation methods of the embodiments of the present invention, when executing step S103, in addition to considering the influence of the thickness of the foundation protective layer on the stress, other external factors that may affect the stress condition of the transmission tower can also be introduced. These external factors include wind load, temperature, ice and snow load, transmission line load, etc.

[0084] When conducting mechanical simulation analysis, at least one external factor is introduced and simulated together with the thickness of the foundation protection layer to obtain simulated stress data; by introducing other external factors that may affect the stress of the transmission tower, the simulated stress data can be more in line with the real scene, and the subsequent trigger conditions are more accurate. However, correspondingly, due to the introduction of external factors, the complexity of the calculation will be greatly increased during the analysis, and the number of combinations of situations generated will also be greater.

[0085] Correspondingly, when executing step S105, it is also necessary to obtain actual external factor data corresponding to the introduced external factors within a certain time domain interval in the actual scene as a reference for actual judgment. The actual stress data obtained through continuous monitoring is judged in combination with the actual external factor data.

[0086] The external factor data and the actual stress data are input into the trained simulation structure model together. Based on the numerical characteristics and curve characteristics of the actual stress data, the thickness of the foundation protection layer corresponding to the actual stress data under the influence of external factors is obtained.

[0087] Based on the actual external factor data obtained, we can more accurately compare and determine which foundation protective layer thickness situation in the previous simulation analysis the current actual stress data better matches, so as to more accurately judge the specific area where the foundation protective layer thickness does not meet the standard and the severity of the non-compliance of the foundation protective layer thickness.

[0088] For example, when the external factor introduced is temperature, when obtaining the actual stress data, it is also necessary to obtain the ambient temperature value at the same time point. Then, based on the obtained ambient temperature value, from all possible scenarios set to the same temperature value in the previous simulation analysis, find which basic protective layer thickness situation has a higher degree of match with the current actual stress data, and then determine in this case which specific area has the basic protective layer thickness that does not meet the standard and the severity of the basic protective layer thickness not meeting the standard.

[0089] In summary, the method for monitoring the stress condition of a transmission tower provided in an embodiment of the present invention monitors and analyzes the stress state of the transmission tower based on an established transmission tower simulation structure model, and combines the actual situation of the actual scene to quickly and accurately discover the corrosion of the transmission tower foundation caused by the change in the thickness of the foundation protective layer, and realizes monitoring in a remote manner without the need for on-site testing, making the monitoring process more convenient.

[0090] like Figure 2 As shown, the present invention provides a device for monitoring the stress condition of a transmission tower, the device comprising:

[0091] The model building unit 110 is used to build a simulation structure model of the transmission tower, and add sensing points of the stress sensor in the simulation structure model according to the actual installation situation of the transmission tower;

[0092] The model adjustment unit 120 is used to obtain actual stress data obtained by stress sensors at different positions of the transmission tower in the actual scene, and adjust the established simulation structure model according to the actual stress data obtained to obtain a simulation structure model matching the actual scene;

[0093] A data generating unit 130 is used to perform mechanical simulation analysis based on the adjusted simulation structure model, and obtain simulation stress data of different basic protective layer thicknesses for the sensing points as a training data set;

[0094] The model training unit 140 is used to train the adjusted simulation structure model using the data set to establish a mapping relationship between stress data of different sensing points and thicknesses of different basic protective layers; the mapping relationship includes a numerical feature mapping relationship and a curve feature mapping relationship in a time domain interval;

[0095] The data monitoring unit 150 is used to continuously monitor the transmission tower, obtain actual stress data within a certain time domain interval, input the obtained actual stress data into the trained simulation structure model, and obtain the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data;

[0096] The monitoring and early warning unit 160 is used to determine whether a triggering condition for triggering a monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and if the triggering condition is met, perform a corresponding monitoring and early warning action.

[0097] The device for monitoring the stress condition of a transmission tower provided in an embodiment of the present invention is used to implement the above-mentioned method for monitoring the stress condition of a transmission tower. Therefore, the specific implementation method is the same as the above-mentioned method and will not be repeated here.

[0098] In summary, the present invention provides a method and device for monitoring the stress condition of a transmission tower. Based on an established transmission tower simulation structure model, the stress state of the transmission tower is monitored and analyzed, and combined with the actual situation of the actual scene, the corrosion of the transmission tower foundation caused by the change in the thickness of the foundation protective layer can be quickly and accurately discovered. The monitoring is achieved remotely without the need for on-site testing, making the monitoring process more convenient.

[0099] In several embodiments disclosed in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a module, a program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0100] In addition, 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.

[0101] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, server, or stress sensor, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

Claims

1. A method for monitoring the stress condition of a transmission tower, characterized in that: The method comprises: Establish a simulation structure model of the transmission tower, and add sensing points of stress sensors to the simulation structure model according to the actual installation conditions of the transmission tower; Acquire actual stress data obtained by stress sensors at different positions of the transmission tower in the actual scene, and adjust the established simulation structure model according to the actual stress data obtained to obtain a simulation structure model matching the actual scene; Perform mechanical simulation analysis based on the adjusted simulation structure model, and obtain simulation stress data of different base protection layer thicknesses for the sensing points as training data sets; The adjusted simulation structure model is trained using the data set to establish a mapping relationship between stress data of different sensing points and thicknesses of different basic protective layers; the mapping relationship includes a numerical feature mapping relationship and a curve feature mapping relationship in a time domain interval; Continuously monitor the transmission tower to obtain the actual stress data within a certain time domain interval, input the obtained actual stress data into the trained simulation structure model, and obtain the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data; Determine whether the triggering condition for triggering the monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and if the triggering condition is met, execute the corresponding monitoring and early warning action; The step of performing mechanical simulation analysis based on the adjusted simulation structure model to obtain simulation stress data of different base protection layer thicknesses for the sensing points specifically includes: According to the installation situation of the transmission tower in the actual scene, the base protection layer is divided into regions; Different values ​​of the thickness of the foundation protection layer are taken for different areas, and simulation analysis is performed respectively to obtain the simulation stress data under the corresponding conditions; The step of obtaining the thickness of the base protective layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data specifically includes: Extract the numerical features and curve features corresponding to different sensing points in the actual stress data; According to the mapping relationship, the values ​​of the thickness of the basic protective layer in different areas are obtained respectively; The step of obtaining the values ​​of the thickness of the base protective layer in different regions according to the mapping relationship specifically includes: For different regions, weight values ​​are set for both numerical features and curve features; When matching numerical features, the difference of the numerical values ​​is calculated and the case with the smallest difference is selected; when matching curve features, the similarity of the curves is calculated and the case with the highest similarity is selected; According to the set weight value, the final matching degree is determined by comprehensively considering the two dimensions; The value of the basic protective layer thickness that has the highest matching degree with the numerical feature and the curve feature is used as the basic protective layer thickness corresponding to the actual stress data; The step of judging whether the triggering condition for triggering the monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and executing the corresponding monitoring and early warning action if the triggering condition is met, specifically includes: Set different trigger conditions for different divided areas; According to the correspondence between the simulation data and the actual scene, the specific area where the thickness of the basic protective layer does not meet the standard in the actual scene is determined; Determine the severity of the failure of the base protection layer thickness to meet the standard according to the base protection layer thickness value range; Monitoring and early warning actions are performed on the area based on the specific area and severity of the failure to meet the thickness of the basic protective layer.

2. The method for monitoring the stress condition of a transmission tower according to claim 1, characterized in that: The step of adjusting the established simulation structure model according to the acquired actual stress data to obtain a simulation structure model matching the actual scene specifically includes: The actual stress data is compared with the theoretical stress data calculated by the established simulation structure model, and based on the difference between the simulation stress data and the actual stress data, the simulation structure model is adjusted to obtain a simulation structure model that matches the actual scene.

3. The method for monitoring the stress condition of a transmission tower according to claim 2, characterized in that: The step of judging whether the triggering condition for triggering the monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and executing the corresponding monitoring and early warning action if the triggering condition is met, specifically includes: When it is determined that the trigger condition is met, the specific area where the thickness of the basic protective layer does not meet the standard is determined according to the thickness of the basic protective layer that specifically meets the trigger condition in the actual stress data; Execute monitoring and early warning actions for the area.

4. The method for monitoring the stress condition of a transmission tower according to claim 3, characterized in that: The step of judging whether the triggering condition for triggering the monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and executing the corresponding monitoring and early warning action if the triggering condition is met, specifically includes: When it is determined that the trigger condition is met, the severity of the basic protective layer thickness not meeting the standard is determined according to the value of the basic protective layer thickness that specifically meets the trigger condition; Execute monitoring and early warning actions corresponding to the severity level.

5. The method for monitoring the stress condition of a transmission tower according to claim 1, characterized in that: The step of performing mechanical simulation analysis based on the adjusted simulation structure model to obtain simulation stress data of different base protection layer thicknesses for the sensing points specifically includes: When performing mechanical simulation analysis, at least one external factor is introduced and simulated together with the thickness of the foundation protection layer to obtain simulated stress data; the external factors include wind load, temperature, ice and snow load, and transmission line load.

6. The method for monitoring the stress condition of a transmission tower according to claim 5, characterized in that: The step of continuously monitoring the transmission tower to obtain actual stress data within a certain time domain interval, inputting the obtained actual stress data into the trained simulation structure model, and obtaining the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data specifically includes: Acquire actual external factor data corresponding to the introduced external factors within a certain time domain interval in the actual scene; The external factor data and the actual stress data are input into the trained simulation structure model together. Based on the numerical characteristics and curve characteristics of the actual stress data, the thickness of the foundation protection layer corresponding to the actual stress data under the influence of external factors is obtained.

7. A device for monitoring the stress condition of a transmission tower, characterized in that: The device comprises: A model building unit is used to build a simulation structure model of the transmission tower, and add sensing points of the stress sensor in the simulation structure model according to the actual installation situation of the transmission tower; The model adjustment unit is used to obtain actual stress data obtained by stress sensors at different positions of the transmission tower in the actual scene, and adjust the established simulation structure model according to the actual stress data obtained to obtain a simulation structure model matching the actual scene; A data generating unit, used for performing mechanical simulation analysis based on the adjusted simulation structure model, and obtaining simulation stress data of different base protection layer thicknesses for the sensing points as a training data set; A model training unit, used to train the adjusted simulation structure model using the data set, and establish a mapping relationship between stress data of different sensing points and different thicknesses of basic protective layers; the mapping relationship includes a numerical feature mapping relationship and a curve feature mapping relationship in a time domain interval; The data monitoring unit is used to continuously monitor the transmission tower, obtain the actual stress data within a certain time domain interval, input the obtained actual stress data into the trained simulation structure model, and obtain the thickness of the foundation protection layer corresponding to the actual stress data based on the numerical characteristics and curve characteristics of the actual stress data; A monitoring and early warning unit is used to determine whether a triggering condition for triggering a monitoring and early warning action is met according to the obtained thickness of the basic protective layer, and if the triggering condition is met, perform a corresponding monitoring and early warning action; The data generating unit is specifically used for: According to the installation situation of the transmission tower in the actual scene, the base protection layer is divided into regions; Different values ​​of the thickness of the foundation protection layer are taken for different areas, and simulation analysis is performed respectively to obtain the simulation stress data under the corresponding conditions; The data monitoring unit is specifically used for: Extract the numerical features and curve features corresponding to different sensing points in the actual stress data; According to the mapping relationship, the values ​​of the thickness of the basic protective layer in different areas are obtained respectively; The data monitoring unit is further specifically used for: For different regions, weight values ​​are set for both numerical features and curve features; When matching numerical features, the difference of the numerical values ​​is calculated and the case with the smallest difference is selected; when matching curve features, the similarity of the curves is calculated and the case with the highest similarity is selected; According to the set weight value, the final matching degree is determined by comprehensively considering the two dimensions; The value of the basic protective layer thickness that has the highest matching degree with the numerical feature and the curve feature is used as the basic protective layer thickness corresponding to the actual stress data; The monitoring and early warning unit is specifically used for: Set different trigger conditions for different divided areas; According to the correspondence between the simulation data and the actual scene, the specific area where the thickness of the basic protective layer does not meet the standard in the actual scene is determined; Determine the severity of the failure of the base protection layer thickness to meet the standard according to the base protection layer thickness value range; Monitoring and early warning actions are performed on the area based on the specific area and severity of the failure to meet the thickness of the basic protective layer.

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