Power transmission tower loose bolt positioning method and system based on multi-channel interaction

Abstract

The invention particularly relates to a transmission tower loose bolt positioning method based on multi-channel interaction, and the method specifically comprises the steps: dividing the whole region into a first monitoring region, a second monitoring region and a third monitoring region according to the position region of a transmission tower, the first monitoring area, the second monitoring area and the third monitoring area respectively correspond to a tower bottom area, a tower body area and a tower tip area of the power transmission tower position area; a first parameter of the whole area of the power transmission tower is obtained, a parameter interval of the whole area of the power transmission tower is determined according to a preset first threshold interval, and the parameter interval comprises an abnormal interval and a normal interval; when the abnormal interval is output, whether bolt abnormity exists or not is judged according to the overall condition of the iron tower, then a specific loosening point is determined according to the specific vibration condition, meanwhile, the collection frequency of a monitored area is determined according to the abnormal condition, and equipment is utilized to the maximum extent. The invention provides a transmission tower loose bolt positioning method and system based on multi-channel interaction, and aims to improve the positioning of loose bolts and improve the maintenance efficiency of a transmission tower.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission equipment, and in particular relates to a method and system for locating loose bolts of a power transmission tower based on multi-channel interaction. Background Art

[0002] Transmission towers are made of tower materials connected by bolts. Under long-term natural conditions, the bolts of transmission line towers may become loose. If not handled in time, it may cause tower collapse and line disconnection accidents. Due to the large number of bolts and complex structure, strong winds and large temperature differences will cause the bolt connections of the towers to loosen and fail. When the bolts of the towers are loose, under appropriate wind loads, it may cause abnormal vibration or resonance at the top of the tower, resulting in shaking and warping deformation of the top of the tower, fatigue damage of the tower components, instability of the tower structure and collapse, which seriously endangers the safety of communication and transmission networks. Therefore, early diagnosis of loose tower bolts is particularly important.

[0003] At present, the focus of monitoring is to use sensors and other components to determine whether the bolts are loose by applying pressure and vibration. However, since bolt loosening is an inevitable process and there are a large number of bolts on the tower, it is impossible to monitor each bolt, and the loosening process is not synchronized. Some bolts loosen quickly while others do not. This makes it difficult to locate the loose bolts. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a method and system for locating loose bolts of a transmission tower based on multi-channel interaction, so as to improve the positioning of loose bolts and further improve the maintenance efficiency of the transmission tower.

[0005] According to one aspect of the present invention, a method for locating loose bolts of a transmission tower based on multi-channel interaction is provided, wherein the method comprises:

[0006] The whole area is divided into a first monitoring area, a second monitoring area and a third monitoring area according to the transmission tower location area, wherein the first monitoring area, the second monitoring area and the third monitoring area correspond to the tower bottom area, the tower body area and the tower top area of ​​the transmission tower location area respectively;

[0007] Acquire a first parameter of the entire area of ​​the transmission tower, and determine a parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval, wherein the parameter interval includes an abnormal interval and a normal interval;

[0008] When the abnormal interval is output, the vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area are determined according to the vibration signal;

[0009] Determine an abnormal area based on the vibration parameter and a preset standard vibration parameter, wherein the abnormal area includes at least one of a first monitoring area, a second monitoring area, and a third monitoring area;

[0010] Obtain the deviation range of the abnormal area, determine the monitoring level of the abnormal area according to the preset second threshold interval, and determine the collection frequency of each monitoring point according to the monitoring level. When the monitoring level is the highest, an alarm is triggered immediately, and all monitoring points in the abnormal area are called to sample at the maximum frequency.

[0011] The specific implementation scheme of the method also includes a monitoring level adjustment process, which specifically includes:

[0012] Obtaining a monitoring period, and obtaining abnormal conditions in the abnormal area during the monitoring period, wherein the construction of the monitoring period is based on the first occurrence of an abnormal condition in the abnormal area as the start point, and the end point of the monitoring period is a preset time;

[0013] If no abnormality occurs during the monitoring period, the monitoring period is reconstructed starting from the end point. If no abnormality occurs during N consecutive monitoring periods, the monitoring level is reduced to the next level.

[0014] If an abnormal situation occurs during the monitoring period, the monitoring level will be immediately upgraded to the next level, and the monitoring period will be reconstructed immediately based on the point where the abnormal situation occurs. When the duration between two abnormal situations is lower than the third threshold, an alarm will be triggered immediately.

[0015] In a specific implementation of the method, the entire area is divided into a first monitoring area, a second monitoring area, and a third monitoring area according to the location area of ​​the transmission tower, including:

[0016] Construct a model that matches the entire area of ​​the transmission tower, and according to the overall structure of the transmission tower, define the height interval of the tower legs of the transmission tower as the first monitoring area;

[0017] The second monitoring area is the height interval that starts from the highest point of the tower leg and extends evenly upward to the highest point;

[0018] The part above the point where the cross section of the tower frame changes sharply is the tower head. If there is no sharp change in the cross section, the part above the lower chord of the lower cross arm is the tower head, which is the third monitoring area.

[0019] In a specific implementation of the method, the obtaining of the first parameter of the entire area of ​​the transmission tower and determining the parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval include:

[0020] Obtain the triaxial vibration acceleration of the entire area of ​​the transmission tower;

[0021] According to the changes in the horizontal X and Y axis data and the Z axis data perpendicular to the ground, the overall inclination and direction of the transmission tower are determined, and the change trend is determined according to the data change rate;

[0022] Compare the degree and direction of the inclination with a preset first threshold interval. If the inclination is within the first threshold interval, the entire area of ​​the transmission tower is a normal interval. If the inclination exceeds the first threshold interval, the entire area of ​​the transmission tower is an abnormal interval.

[0023] And when the degree and direction of inclination are at the first threshold value, and the change trend exceeds the preset range, the entire area of ​​the transmission tower is also an abnormal area.

[0024] In a specific implementation scheme of the method, when the output is in an abnormal interval, the vibration parameters corresponding to the first monitoring area, the second monitoring area, and the third monitoring area are determined according to the vibration signal, including:

[0025] When the abnormal interval is output, elastic waves are generated at each monitoring point in the corresponding monitoring area, where the monitoring points are tower materials connected by bolts;

[0026] Obtain vibration signals of the tower material where the excitation point is located and the tower materials connected by bolts;

[0027] The vibration signal is analyzed according to the autocorrelation variational mode decomposition method and the output is the vibration parameters.

[0028] In a specific implementation of the method, determining the abnormal area based on the vibration parameter and the preset standard vibration parameter includes:

[0029] Obtaining preset standard vibration parameters and comparing them with the vibration parameters;

[0030] If the vibration parameters exceed the standard vibration parameters, the monitoring area where the abnormal vibration parameters are located is determined according to the location of the monitoring point, and the monitoring area is the abnormal area;

[0031] The monitoring point generated by the abnormal part is an abnormal sub-region, and there is at least one abnormal sub-region.

[0032] In a specific implementation scheme of the method, after determining the abnormal sub-region, the method further includes:

[0033] Acquire image information of abnormal sub-region;

[0034] Compare the acquired image information with the pre-stored standard image;

[0035] Determine the specific location of the loose bolts based on the abnormal points shown in the image comparison results;

[0036] If the comparison results do not show any abnormalities, manual verification will be performed.

[0037] In a specific implementation of the method, a first frequency of occurrence of the abnormal situation and an image comparison result corresponding to the first frequency are obtained;

[0038] The second frequency where no abnormal points are shown on the image and there is no looseness after manual verification;

[0039] According to the ratio of the second frequency to the first frequency, if the ratio exceeds a preset fourth threshold, outputting a verification signal;

[0040] The deviation range of the abnormal sub-region is adjusted according to the verification signal.

[0041] According to another aspect of the present invention, a transmission tower loose bolt positioning system based on multi-channel interaction is provided, wherein the system comprises:

[0042] A region division module, used for dividing the whole region into a first monitoring region, a second monitoring region and a third monitoring region according to the transmission tower location region, wherein the first monitoring region, the second monitoring region and the third monitoring region are respectively associated with the tower bottom region, the tower body region and the tower top region of the transmission tower location region;

[0043] An abnormality acquisition module, the abnormality determination module is used to obtain a first parameter of the entire area of ​​the transmission tower, and determine a parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval, wherein the parameter interval includes an abnormal interval and a normal interval;

[0044] An abnormality confirmation module, the abnormality confirmation module is used to determine the vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area respectively according to the vibration signal, and determine the abnormal area based on the vibration parameters and the preset standard vibration parameters, and the abnormal area includes at least one of the first monitoring area, the second monitoring area and the third monitoring area;

[0045] The abnormality monitoring module, the abnormality level adjustment module is used to obtain the deviation range of the abnormal area, determine the monitoring level of the abnormal area according to the preset second threshold interval, and determine the collection frequency of each monitoring point according to the monitoring level. When the monitoring level is the highest, an alarm is triggered immediately, and all monitoring points in the abnormal area are called to sample at the maximum frequency.

[0046] In a specific implementation scheme of the system, a level adjustment module is also included, and the level adjustment module is used to adjust the monitoring level of the abnormal area according to the abnormal situation.

[0047] According to another aspect of the present invention, a transmission tower loose bolt positioning terminal based on multi-channel interaction is provided, the terminal comprising:

[0048] at least one processor;

[0049] and a memory communicatively coupled to the at least one processor;

[0050] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for locating loose bolts on a transmission tower based on multi-channel interaction.

[0051] Compared with the prior art, the beneficial effects are:

[0052] 1. By obtaining the three-axis vibration acceleration of the tower body, it is possible to quickly determine whether there are loose bolts on the entire transmission tower, and to detect abnormalities when the bolts are loosened in the early stages. There is no need to monitor each bolt, reducing the cost of sampling each bolt.

[0053] 2. Under the premise of overall abnormality, the location of the abnormal point can be determined according to the vibration parameters of the excitation point, and the monitoring level can be determined according to the deviation range of the abnormal situation. The monitoring frequency can be determined according to different monitoring levels, so that the collection equipment can be used reasonably, and the monitoring level can be flexibly adjusted according to subsequent situations to maximize the utilization of resources and avoid long-term high-frequency operation of monitoring equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 The present invention is a flow chart of a method for locating loose bolts of a transmission tower based on multi-channel interaction. DETAILED DESCRIPTION

[0055] The following is a detailed description of a method and system for locating loose bolts on a transmission tower based on multi-channel interaction according to the present invention in conjunction with the accompanying drawings.

[0056] Figure 1 This is a flow chart of a method for locating loose bolts on a transmission tower based on multi-channel interaction according to the present invention. This embodiment is applicable to the case of loose bolts. The method can be executed by a transmission tower loose bolt locating system based on multi-channel interaction. The system can be configured in a transmission tower loose bolt locating terminal based on multi-channel interaction. Figure 1 As shown, the method includes:

[0057] S1. Divide the entire area into a first monitoring area, a second monitoring area and a third monitoring area according to the transmission tower location area, wherein the first monitoring area, the second monitoring area and the third monitoring area correspond to the tower bottom area, the tower body area and the tower top area of ​​the transmission tower location area respectively;

[0058] The division process is based on the specific structure of the transmission tower. The method is to build a model that matches the overall area of ​​the transmission tower. The height interval of the tower legs of the transmission tower is used as the first monitoring area. The height interval starting from the highest point of the tower leg and extending evenly upward to the highest point is used as the second monitoring area.

[0059] The part above the point where the cross section of the tower changes sharply (a broken line appears) is the tower head. If there is no sharp change in the cross section, the part above the lower chord of the lower cross arm is the tower head, which is the third monitoring area.

[0060] In an embodiment of the present invention, the tower leg height interval of the transmission tower is the cage bottom of the transmission tower, and there are many bolts at the bottom, so it is taken as a separate monitoring area, and the tower body is located above the cage bottom, and it is relatively stable as a whole, so the connection between it and the cage bottom (including the connection) to the position where it changes sharply is taken as the second monitoring area, and although the overall area of ​​the tower top is small, it is at the highest point and is most affected by wind and environment, so it is taken as a separate monitoring area. Of course, in addition to the above division method, it can also be divided according to the distribution of bolts on the model and the actual situation. The specific division method will not be described in detail here.

[0061] S2, obtaining a first parameter of the entire area of ​​the transmission tower, and determining a parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval, wherein the parameter interval includes an abnormal interval and a normal interval;

[0062] Specifically, the three-axis vibration acceleration of the overall shaking of the transmission tower is obtained;

[0063] According to the changes in the horizontal X and Y axis data and the Z axis data perpendicular to the ground, the overall inclination and direction of the transmission tower are determined, and the change trend is determined according to the data change rate;

[0064] The degree and direction of the inclination are compared with a preset first threshold interval. If they are within the first threshold interval, the entire area of ​​the transmission tower is a normal interval. If they exceed the first threshold interval, the entire transmission tower is an abnormal interval.

[0065] And when the degree and direction of inclination are at the first threshold value, and the change trend exceeds the preset range, the entire area of ​​the transmission tower is also an abnormal area.

[0066] In an embodiment of the present invention, when the bolts of the iron tower are loose, the vibration and shaking of the tower body will be abnormal under the action of appropriate wind load. Therefore, a method of obtaining the three-axis vibration acceleration of the tower body is adopted. Specifically, a certain monitoring frequency can be set to achieve multiple monitorings to meet the measurement of abnormal data under appropriate wind load. Among them, the first threshold is not a single value, but a summary of the thresholds of multiple data. The specific first threshold should include different thresholds set on the three axes of acceleration X, Y, and Z. The overall inclination degree and direction of the transmission tower can be determined by comparing the above thresholds (the currently more commonly used transmission tower pole vibration and shaking inclination acceleration recorder can be used, such as the American MiJack MT-Ultrashock-TT), when the acceleration on the three axes of acceleration X, Y, and Z does not meet the threshold range, the transmission tower as a whole is abnormal. At the same time, even if the above parameters are normal, but the change trend of the above parameters exceeds the preset, it is also determined that the transmission tower as a whole is abnormal (because when the bolts are loose, it is necessary to respond, and the response process takes a certain amount of time, and when the change trend exceeds the preset, the bolts are actually slightly loose, but the overall warning point has not been reached. Once the bolts are slightly loose, they may become more loose in a short period of time, so the purpose is to respond in advance), so that it can quickly determine whether the bolts of the transmission tower as a whole are loose according to the three-axis vibration acceleration.

[0067] The above method can detect abnormalities when the bolts are loosened at an early stage, and there is no need to monitor each bolt. Once an abnormality occurs in a bolt, further positioning can be performed later.

[0068] S3, when the abnormal interval is output, the vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area are determined according to the vibration signal;

[0069] Specifically, when the abnormal interval is output, elastic waves are generated at each monitoring point in the corresponding monitoring area, and the monitoring points are tower materials connected by bolts;

[0070] Obtain vibration signals of the tower material where the excitation point is located and the tower materials connected by bolts;

[0071] The vibration signal is analyzed according to the autocorrelation variational mode decomposition method and the output is the vibration parameters.

[0072] In an embodiment of the present invention, elastic waves are generated by means of excitation (pulse exciter, which can be installed at the monitoring point), and the vibration signal generated by the excitation point is analyzed by the autocorrelation variational mode decomposition method (VMD). Before the signal analysis, the collected vibration signal needs to be preprocessed, such as denoising, normalization, etc., to improve the accuracy of signal processing. Then the VMD method is applied: the preprocessed vibration signal is analyzed by the VMD method. Among them, VMD is an adaptive signal processing method, which can determine the number and frequency center of modal decomposition according to the characteristics of the signal itself. This method estimates the modal function of the signal through a variational optimization problem to obtain a series of intrinsic mode functions (IMFs). By performing VMD decomposition on the vibration signal, the frequency spectrum of the signal can be obtained. Spectral analysis helps to identify key frequency components in the signal, which may be related to the loose state of the bolt, that is, these frequency components are used as vibration parameters.

[0073] S4, determining an abnormal area based on the vibration parameter and a preset standard vibration parameter, wherein the abnormal area includes at least one of a first monitoring area, a second monitoring area, and a third monitoring area;

[0074] Specifically, the method includes: obtaining a preset standard vibration parameter and comparing it with the vibration parameter;

[0075] If the vibration parameters exceed the standard vibration parameters, the monitoring area where the abnormal vibration parameters are located is determined according to the location of the monitoring point, and the monitoring area is the abnormal area;

[0076] The monitoring point generated by the abnormal part is an abnormal sub-region, and there is at least one abnormal sub-region.

[0077] In an embodiment of the present invention, the vibration parameter is the key frequency component. After analyzing the frequency spectrum, if there is an abnormality between the key frequency component and the standard vibration parameter, there may be signs of bolt loosening. At this time, it is determined that the abnormal location is in the first monitoring area, the second monitoring area, and the third monitoring area, that is, any of the above monitoring areas may be an abnormal area, and the abnormal location, that is, the monitoring point, is used as an abnormal sub-area. At the same time, since there may be more than one loose situation, there is at least one abnormal sub-area.

[0078] S5. Obtain the deviation range of the abnormal area, determine the monitoring level of the abnormal area according to the preset second threshold interval, determine the collection frequency of each monitoring point according to the monitoring level, and immediately trigger an alarm when the monitoring level is the highest, and call all monitoring points in the abnormal area to sample at the maximum frequency.

[0079] In an embodiment of the present invention, the deviation range is the difference range between the vibration parameter and the standard vibration parameter, wherein the second threshold interval includes multiple intervals, and the monitoring level of the abnormal area is determined according to the different intervals where the deviation range is located, wherein, once the maximum allowable interval is exceeded, the monitoring level is adjusted to the highest, and an alarm signal is issued at the same time, and at this time, all monitoring points in the abnormal area are sampled at the maximum frequency, and the design purpose is that once a large loose situation occurs at a certain monitoring point, the shaking of the iron tower will be aggravated by wind load and environmental influences, so that other normal monitoring points are easily affected, and if only the loose point is dealt with, other monitoring points are also prone to looseness during the time period of the response, so when an alarm occurs, all monitoring points in the abnormal area are immediately called for real-time monitoring, until all loose bolts are repaired, if there is no abnormality in other monitoring points, the frequency of other monitoring points is reduced to the initial level. The monitoring level can be one, two, three, etc., and the specific interval setting can be set according to the efficiency of the response department.

[0080] It should be noted that the object of using the frequency is the process of obtaining vibration parameters, that is, the frequency monitored by pulse excitation.

[0081] In addition, the present invention also includes a process of adjusting the monitoring level, which specifically includes:

[0082] Obtaining a monitoring period, and obtaining abnormal conditions in the abnormal area during the monitoring period, wherein the construction of the monitoring period is based on the first occurrence of an abnormal condition in the abnormal area as the start point, and the end point of the monitoring period is a preset time;

[0083] If no abnormality occurs during the monitoring period, the monitoring period is reconstructed starting from the end point. If no abnormality occurs during N consecutive monitoring periods, the monitoring level is reduced to the next level, where N is a positive integer.

[0084] If an abnormal situation occurs during the monitoring period, the monitoring level will be immediately upgraded to the next level, and the monitoring period will be reconstructed immediately based on the point where the abnormal situation occurs. When the duration between two abnormal situations is lower than the third threshold, an alarm will be triggered immediately.

[0085] In an embodiment of the present invention, when an abnormal situation occurs, the monitoring period ends at a preset time (which can be set according to actual needs and is not limited here) starting from the first abnormal situation in the abnormal area. If no abnormality occurs in the monitoring period, the monitoring period is reconstructed. When no abnormality occurs in the continuous monitoring period, the monitoring level is reduced to reduce the monitoring frequency and reduce the consumption of the equipment. The monitoring level will be gradually reduced as the period increases. However, once the abnormality occurs again, it will be directly upgraded to the monitoring level for the abnormal situation. If the abnormality occurs again in the monitoring period, the monitoring level will be upgraded immediately and the monitoring period will be reconstructed. If it still occurs later, it will continue to upgrade. At the same time, when the time interval between two adjacent abnormal situations is lower than the preset third threshold, the alarm is immediately triggered, so that the abnormal point is sampled at the maximum frequency, and other monitoring points in the same abnormal area are still monitored at the original level. The above method can be used to perform more reasonable monitoring of abnormal situations, maximize the efficiency of monitoring, and avoid excessive operation of monitoring equipment.

[0086] In an embodiment of the invention, after determining the abnormal sub-region, the method further includes:

[0087] Acquire image information of abnormal sub-region;

[0088] Compare the acquired image information with the pre-stored standard image;

[0089] Determine the specific location of the loose bolts based on the abnormal points shown in the image comparison results;

[0090] If the comparison results do not show any abnormalities, manual verification will be performed.

[0091] In the above embodiment, after the abnormal sub-region is determined, the image information of the abnormal sub-region can be captured from the real-time picture taken by the monitoring equipment (fixed camera, etc.), and compared with the standard image to determine whether there is an obvious abnormality. If there is an obvious abnormality, the corresponding plan can be arranged for repair. When no obvious abnormality is found, the abnormal sub-region has been accurately located to the connection point, so it is manually verified. If it exists, it is repaired, and if no abnormality exists, it is recorded.

[0092] More specifically, obtaining a first frequency of occurrence of the abnormal situation and an image comparison result corresponding to the first frequency;

[0093] The second frequency where no abnormal points are shown on the image and there is no looseness after manual verification;

[0094] According to the ratio of the second frequency to the first frequency, if the ratio exceeds a preset fourth threshold, outputting a verification signal;

[0095] The deviation range of the abnormal sub-region is adjusted according to the verification signal.

[0096] In the above method, when an abnormal situation occurs and the image does not show an abnormal point, after manual verification, there is a loose situation. This is because under different wind loads or other extreme conditions, the front-end equipment will have certain deviations during monitoring. Therefore, when the ratio of the second frequency is large, it means that the threshold at the abnormal point may be unreasonable. Therefore, it is adjusted according to the actual situation to avoid repeated false alarms.

[0097] The present invention also provides a transmission tower loose bolt positioning system based on multi-channel interaction, comprising:

[0098] A region division module, used for dividing the whole region into a first monitoring region, a second monitoring region and a third monitoring region according to the transmission tower location region, wherein the first monitoring region, the second monitoring region and the third monitoring region correspond to the tower bottom region, the tower body region and the tower top region of the transmission tower location region respectively;

[0099] An abnormality acquisition module, the abnormality determination module is used to obtain a first parameter of the entire area of ​​the transmission tower, and determine a parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval, wherein the parameter interval includes an abnormal interval and a normal interval;

[0100] An abnormality confirmation module, the abnormality confirmation module is used to determine the vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area respectively according to the vibration signal, and determine the abnormal area based on the vibration parameters and the preset standard vibration parameters, and the abnormal area includes at least one of the first monitoring area, the second monitoring area and the third monitoring area;

[0101] The abnormality monitoring module, the abnormality level adjustment module is used to obtain the deviation range of the abnormal area, determine the monitoring level of the abnormal area according to the preset second threshold interval, and determine the collection frequency of each monitoring point according to the monitoring level. When the monitoring level is the highest, an alarm is triggered immediately, and all monitoring points in the abnormal area are called to sample at the maximum frequency.

[0102] In the embodiment of the present invention, the transmission tower location area is first divided by the area division module, and is divided into a first monitoring area, a second monitoring area and a third monitoring area. Secondly, the first parameter of the entire area of ​​the transmission tower is obtained by the abnormal acquisition module, and it is determined whether it is an abnormal interval by comparing with the first threshold interval. After confirming the abnormal interval, the abnormal area is determined by further obtaining the vibration parameter, and the monitoring level is determined according to the vibration parameter. The acquisition frequency is determined according to the monitoring level. When the highest monitoring level is reached, a certain monitoring point is loosened greatly. Affected by wind load and environment, the shaking of the iron tower will be aggravated, which can easily affect other normal monitoring points. If only the loose points are dealt with, other monitoring points are also prone to looseness during the response time period. Therefore, when an alarm occurs, all monitoring points in the abnormal area are immediately called for real-time monitoring until all loose bolts are repaired. If there is no abnormality in other monitoring points, the frequency of other monitoring points is reduced to the initial level.

[0103] In some embodiments, the region partitioning module includes:

[0104] The model building unit is used to build a model of the entire area of ​​the transmission tower.

[0105] The segmentation unit is used to segment the model of the entire area of ​​the transmission tower. The entire area is divided into the tower bottom area, the tower body area and the tower top area. The segmentation can be performed along the connection points.

[0106] In some embodiments, the exception acquisition module includes:

[0107] The parameter acquisition module is used to obtain the three-axis vibration acceleration of the overall regional shaking of the transmission tower;

[0108] The data processing module is used to determine the overall inclination and direction of the transmission tower according to the changes in the horizontal X and Y axis data and the Z axis data perpendicular to the ground, and determine the change trend according to the data change rate.

[0109] The data comparison module is used to compare the degree and direction of inclination with a preset first threshold interval. If it is within the first threshold interval, the entire area of ​​the transmission tower is a normal interval. If it exceeds the first threshold interval, the entire transmission tower is an abnormal interval.

[0110] And when the degree and direction of inclination are at the first threshold value, and the change trend exceeds the preset range, the entire area of ​​the transmission tower is also an abnormal area.

[0111] In some embodiments, the abnormality confirmation module includes:

[0112] An excitation generation module is used to generate pulse excitation and corresponding elastic waves;

[0113] The signal processing module is used to analyze the vibration signal generated by the excitation point and output it as vibration parameters.

[0114] In some embodiments, the abnormality monitoring module includes:

[0115] A level determination module, used to determine the monitoring level of the abnormal area according to the vibration parameters;

[0116] The level adjustment module is used to adjust the monitoring level of the abnormal area according to the abnormal situation. The specific adjustment process includes:

[0117] Obtaining a monitoring period, and obtaining abnormal conditions in the abnormal area during the monitoring period, wherein the construction of the monitoring period is based on the first occurrence of an abnormal condition in the abnormal area as the start point, and the end point of the monitoring period is a preset time;

[0118] If no abnormality occurs during the monitoring period, the monitoring period is reconstructed starting from the end point. If no abnormality occurs during N consecutive monitoring periods, the monitoring level is reduced to the next level, where N is a positive integer.

[0119] If an abnormal situation occurs during the monitoring period, the monitoring level will be immediately upgraded to the next level, and the monitoring period will be reconstructed immediately based on the point where the abnormal situation occurs. When the duration between two abnormal situations is lower than the third threshold, an alarm will be triggered immediately.

[0120] The present invention also provides a transmission tower loose bolt positioning terminal based on multi-channel interaction, comprising:

[0121] at least one processor;

[0122] and a memory, such as a read-only memory (ROM), a random access memory (RAM), etc., communicatively connected to the at least one processor;

[0123] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for locating loose bolts on a transmission tower based on multi-channel interaction.

[0124] Among them, the memory stores a computer program that can be executed by at least one processor, and the processor can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) or the computer program loaded from the storage unit to the random access memory (RAM). In the RAM, various programs and data required for the operation of the electronic device can also be stored. The processor, ROM and RAM are connected to each other through a bus. The input / output (I / O) interface is also connected to the bus.

[0125] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0126] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention. A person skilled in the art should understand that the specific implementation of the present invention can be modified or replaced by equivalents, but these modifications or changes are within the scope of protection of the pending claims.

Claims

1. A method for locating loose bolts of a transmission tower based on multi-channel interaction, characterized in that: include: S1. Divide the entire area into a first monitoring area, a second monitoring area and a third monitoring area according to the transmission tower location area, wherein the first monitoring area, the second monitoring area and the third monitoring area correspond to the tower bottom area, the tower body area and the tower top area of ​​the transmission tower location area respectively; S2, obtaining a first parameter of the entire area of ​​the transmission tower, and determining a parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval, wherein the parameter interval includes an abnormal interval and a normal interval; S3, when outputting the abnormal interval, determining vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area respectively according to the vibration signal; S4, determining an abnormal area based on the vibration parameter and a preset standard vibration parameter, wherein the abnormal area includes at least one of the first monitoring area, the second monitoring area, and the third monitoring area; S5. Obtain the deviation range of the abnormal area, determine the monitoring level of the abnormal area according to a preset second threshold interval, and determine the collection frequency of each monitoring point according to the monitoring level, wherein an alarm is immediately triggered when the monitoring level is the highest, and all monitoring points in the abnormal area are called to perform sampling at the maximum frequency.

2. A method for locating loose bolts of a transmission tower based on multi-channel interaction according to claim 1, characterized in that: It also includes the adjustment process of the monitoring level, specifically including: Acquire a monitoring period, and acquire an abnormal situation in the abnormal area during the monitoring period, wherein the construction of the monitoring period is based on the first occurrence of an abnormal situation in the abnormal area as the start point, and the end point of the monitoring period is a preset time; If no abnormality occurs during the monitoring period, the monitoring period is reconstructed starting from the end point. If no abnormality occurs during N consecutive monitoring periods, the monitoring level is reduced to the next level. If an abnormal situation occurs during the monitoring period, the monitoring level will be immediately upgraded to the next level, and the monitoring period will be reconstructed immediately based on the point where the abnormal situation occurs. When the duration between two abnormal situations is lower than the third threshold, an alarm will be triggered immediately.

3. The method for locating loose bolts of a transmission tower based on multi-channel interaction according to claim 1 is characterized in that: In S1, the entire area is divided into the first monitoring area, the second monitoring area and the third monitoring area according to the transmission tower location area, including: Constructing a model matching the entire area of ​​the transmission tower, and according to the overall structure of the transmission tower, defining the height interval of the tower legs of the transmission tower as the first monitoring area; The height interval starting from the highest point of the tower leg and extending evenly upward to the highest point is the second monitoring area; The part above the point where the cross section of the tower frame changes sharply is the tower head. If there is no sharp change in the cross section, the part above the lower chord of the lower cross arm is the tower head, which is the third monitoring area.

4. The method for locating loose bolts of a transmission tower based on multi-channel interaction according to claim 1 is characterized in that: In S2, a first parameter of the entire area of ​​the transmission tower is obtained, and a parameter interval of the entire area of ​​the transmission tower is determined according to a preset first threshold interval, including: Obtain the triaxial vibration acceleration of the entire area of ​​the transmission tower; According to the changes in the horizontal X and Y axis data and the Z axis data perpendicular to the ground, the overall inclination and direction of the transmission tower are determined, and the change trend is determined according to the data change rate; Compare the degree and direction of the inclination with a preset first threshold interval. If the inclination is within the first threshold interval, the entire area of ​​the transmission tower is a normal interval. If the inclination exceeds the first threshold interval, the entire area of ​​the transmission tower is an abnormal interval. And when the degree and direction of inclination are at the first threshold value, and the change trend exceeds the preset range, the entire area of ​​the transmission tower is also an abnormal area.

5. A method for locating loose bolts of a transmission tower based on multi-channel interaction according to claim 4, characterized in that: When the abnormal interval is output in S3, the vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area are respectively determined according to the vibration signal, including: When the abnormal interval is output, elastic waves are generated at each monitoring point in the corresponding monitoring area, where the monitoring points are tower materials connected by bolts; Obtain vibration signals of the tower material where the excitation point is located and the tower materials connected by bolts; The vibration signal is analyzed according to the autocorrelation variational mode decomposition method and the output is the vibration parameters.

6. A method for locating loose bolts of a transmission tower based on multi-channel interaction according to claim 5, characterized in that: Determining the abnormal area based on the vibration parameter and the preset standard vibration parameter in S4 includes: Obtaining a preset standard vibration parameter and comparing it with the vibration parameter; If the vibration parameter exceeds the standard vibration parameter, the monitoring area where the abnormal vibration parameter is located is determined according to the position of the monitoring point where the abnormal vibration parameter is located, and the monitoring area is the abnormal area; The monitoring point generated by the abnormal part is an abnormal sub-region, and there is at least one abnormal sub-region.

7. A method for locating loose bolts of a transmission tower based on multi-channel interaction according to claim 6, characterized in that: After the abnormal sub-area is determined, it also includes: Acquiring image information of the abnormal sub-region; Compare the acquired image information with the pre-stored standard image; Determine the specific location of the loose bolts based on the abnormal points shown in the image comparison results; If the comparison results do not show abnormal points, manual verification is performed; Obtaining a first frequency of occurrence of an abnormal situation and an image comparison result corresponding to the first frequency; The second frequency where no abnormal points are shown on the image and there is no looseness after manual verification; According to a ratio of the second frequency to the first frequency, if the ratio exceeds a preset fourth threshold, outputting a verification signal; The deviation range of the abnormal sub-region is adjusted according to the verification signal.

8. A transmission tower loose bolt positioning system based on multi-channel interaction, using a transmission tower loose bolt positioning method based on multi-channel interaction as claimed in any one of claims 1 to 7, characterized in that: include: A region division module, used for dividing the whole region into a first monitoring region, a second monitoring region and a third monitoring region according to the transmission tower location region, wherein the first monitoring region, the second monitoring region and the third monitoring region correspond to the tower bottom region, the tower body region and the tower top region of the transmission tower location region respectively; An abnormality acquisition module, the abnormality acquisition module is used to obtain a first parameter of the entire area of ​​the transmission tower, and determine a parameter interval of the entire area of ​​the transmission tower according to a preset first threshold interval, wherein the parameter interval includes an abnormal interval and a normal interval; an abnormality confirmation module, the abnormality confirmation module is used to determine the vibration parameters corresponding to the first monitoring area, the second monitoring area and the third monitoring area respectively according to the vibration signal, and determine the abnormal area based on the vibration parameters and the preset standard vibration parameters, the abnormal area includes at least one of the first monitoring area, the second monitoring area and the third monitoring area; The abnormality monitoring module, the abnormality level adjustment module is used to obtain the deviation range of the abnormal area, determine the monitoring level of the abnormal area according to the preset second threshold interval, and determine the collection frequency of each monitoring point according to the monitoring level, wherein an alarm is immediately triggered when the monitoring level is the highest, and all monitoring points in the abnormal area are called to sample at the maximum frequency.

9. A transmission tower loose bolt positioning system based on multi-channel interaction according to claim 8, characterized in that: It also includes a level adjustment module, which is used to adjust the monitoring level of the abnormal area according to the abnormal situation.

10. A transmission tower loose bolt positioning terminal based on multi-channel interaction, characterized in that: include: at least one processor; and a memory communicatively coupled to the at least one processor; Wherein, the memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for locating loose bolts of a transmission tower based on multi-channel interaction as described in any one of claims 1-7.

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