Method and system for detecting stress of suspension arm in hoisting process

Abstract

The invention discloses a suspension arm stress detection method and system used in the hoisting process, and relates to the technical field of equipment testing. According to the method, communication verification before operation is carried out, device verification data is collected, the working state of the device can be evaluated, the fault risk in hoisting operation can be reduced, the accuracy of hoisting data collection is improved, then hoisting load historical data is obtained, comprehensive processing is carried out in combination with the collection device verification data, and the hoisting efficiency is improved. Corresponding pre-operation adjustment is executed according to the comprehensive processing result, more comprehensive data support can be provided for the hoisting operation, the pre-operation adjustment is more accurate, finally, the hoisting operation is executed after the pre-operation adjustment, the hoisting process is synchronously detected and analyzed to obtain a hoisting arm stress comprehensive evaluation index value in the hoisting process, and the hoisting efficiency is improved. And the stress evaluation information of the lifting arm in the lifting process is obtained through analysis, the lifting process is adjusted, the stress state of the lifting arm can be monitored in real time, and abnormal conditions can be found and processed in time.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment testing, and in particular to a method and system for detecting boom stress during a hoisting process. Background Art

[0002] In the field of boom stress detection technology, with the increasing complexity of engineering construction and hoisting operations, improving the safety and stability during the hoisting process has become one of the key technologies to improve operating efficiency. The boom is the core component of the hoisting equipment, and the load it carries directly affects the safety and reliability of the hoisting process. With the continuous advancement of sensor technology and wireless communication technology, sensor-based real-time monitoring of boom stress can collect real-time information on boom stress changes during the hoisting operation, and then promptly discover potential risks, providing a scientific basis for optimizing the hoisting process, improving hoisting operation efficiency, and reducing the occurrence of safety accidents.

[0003] Prior art, such as the invention patent announcement with announcement number: CN112665885B, discloses a method, device, lifting equipment and storage medium for evaluating the stability of lifting equipment. The evaluation method includes: obtaining the angular displacement information of the main structure of the lifting equipment in real time; obtaining the stability characterization information of the lifting equipment based on the angular displacement information; and generating corresponding stability evaluation results according to preset rules based on the stability characterization information.

[0004] The prior art, such as a lifting device and a hook detection method thereof announced in the invention patent with announcement number: CN114216707B, relates to the technical field of engineering machinery. The lifting device includes a body provided with an installation area; a proximity switch arranged on the body, the proximity switch is configured to emit a first detection signal indicating that the hook is in the installation area; an image acquisition device is arranged on the body, the image acquisition device is configured to emit a second detection signal indicating that the hook is in the installation area; and an electronic device configured to emit a safety signal indicating that the hook has hooked a preset object based on the first detection signal and the second detection signal.

[0005] Combined with the above scheme, it is found that currently in the field of boom stress detection technology, usually only the lifting equipment and lifting data are monitored and analyzed. However, the stability of data transmission during the lifting process is crucial to the response to safety warning prompts. Only analyzing the lifting data cannot fully evaluate the potential risks in the lifting process, which not only affects the real-time monitoring and decision-making efficiency of the lifting operation, but may also lead to the safety hazards in the lifting operation cannot be identified and eliminated in time, increasing the possibility of accidents. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a method for detecting boom stress during a hoisting process, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] To achieve the above objectives, the first aspect of the present invention is implemented through the following technical solutions: a method for detecting boom stress during lifting, comprising an edge computing node sensing a lifting start signal, and starting a collection device to perform pre-operation communication verification to obtain collection device verification data.

[0008] Obtain historical data of hoisting load, and perform comprehensive processing in combination with the verification data of the acquisition device, and perform corresponding pre-operation adjustments based on the comprehensive processing results.

[0009] After adjustments before the operation, the edge computing node outputs a feasible signal for the hoisting operation, and the hoisting operation is executed. The hoisting process is simultaneously detected, and the comprehensive evaluation index value of the boom stress during the hoisting process is analyzed to obtain the boom stress evaluation information during the hoisting process, and the hoisting process is adjusted.

[0010] Furthermore, the device verification data includes communication transmission data and network performance verification data.

[0011] The communication transmission data includes the communication transmission rate, communication transmission signal strength and communication transmission response time of each sensor device.

[0012] The network performance verification data includes network transmission throughput, network transmission delay duration and network transmission packet loss rate.

[0013] Furthermore, the hoisting load historical data is obtained and comprehensively processed in combination with the verification data of the acquisition device. The specific process is: the hoisting load historical data includes the historical number of hoisting times, the historical cumulative hoisting weight and the historical average boom height.

[0014] Based on the communication transmission data and the network performance verification data, a comprehensive evaluation value of the communication network transmission anomaly is obtained through processing, and the comprehensive evaluation value of the communication network transmission anomaly is used to comprehensively quantify the influence of the network transmission anomaly on the stability of the lifting operation.

[0015] Based on the historical data of hoisting load, a hoisting load benchmark value is obtained through comprehensive analysis, and the hoisting load benchmark value is used to comprehensively quantify the influence of the hoisting operation load on the performance of the hoisting equipment.

[0016] The hoisting load reference value is matched with the communication network transmission regulation interference factor corresponding to each hoisting load reference value interval stored in the hoisting detection database, and the communication network transmission regulation interference factor corresponding to the hoisting load reference value interval is counted and recorded as the communication network transmission regulation influencing factor.

[0017] Based on the comprehensive evaluation value of communication network transmission anomaly and the communication network transmission regulation influencing factor, a comprehensive analysis is performed to obtain the communication network transmission anomaly index value.

[0018] According to the communication network transmission anomaly index value, a comprehensive processing result is analyzed to obtain the comprehensive processing result, and the comprehensive processing result includes the communication network transmission anomaly and the communication network transmission normal.

[0019] The communication network transmission abnormality index value is compared with the set communication network transmission abnormality index threshold. If the communication network transmission abnormality index value is higher than the set communication network transmission abnormality index threshold, the comprehensive processing result is marked as communication network transmission abnormality. If the communication network transmission abnormality index value is lower than or equal to the set communication network transmission abnormality index threshold, the comprehensive processing result is marked as communication network transmission normal.

[0020] Furthermore, the corresponding pre-job adjustments are performed according to the comprehensive processing results. The specific process is: extract the comprehensive processing results. If the comprehensive processing results show that the communication network transmission is normal, continue to monitor and transmit the communication network data for the lifting process with the current communication network transmission configuration; if the comprehensive processing results show that the communication network transmission is abnormal, perform data monitoring and transmission configuration for the lifting process according to the preset communication transmission frequency and network transmission bandwidth, and send the early warning information to the mobile transmission terminal.

[0021] Furthermore, the synchronous detection of the hoisting process specifically includes: detecting the hoisting process to obtain the hoisting path data and the boom stress parameters during the hoisting process.

[0022] The hoisting path data during the hoisting process includes a hoisting height change rate and a hoisting path offset during the hoisting process.

[0023] The boom stress parameters during the hoisting process include the maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height during the hoisting process.

[0024] Based on the hoisting path data during the hoisting process, a hoisting deflection value during the hoisting process is obtained through comprehensive analysis. The hoisting deflection value during the hoisting process is used to comprehensively quantify the influence of the deviation of the hoisting path on the safety of the hoisting operation.

[0025] A comprehensive analysis is performed on the boom stress parameters during the hoisting process to obtain a boom stress assessment value during the hoisting process, and the boom stress assessment value during the hoisting process is used to comprehensively quantify the impact of the boom stress state on the structural safety of the hoisting equipment.

[0026] Furthermore, the analysis obtains a comprehensive evaluation index value of boom stress during the lifting process. The specific analysis process is: matching the lifting deflection value during the lifting process with the lifting adjustment interference factor corresponding to each lifting deflection value interval stored in the lifting detection database, and counting the lifting adjustment interference factor corresponding to the interval in which the lifting deflection value is located, which is recorded as the lifting adjustment influencing factor.

[0027] A comprehensive analysis is performed based on the boom stress evaluation value and the hoisting adjustment influencing factors during the hoisting process to obtain a comprehensive evaluation index value of the boom stress during the hoisting process. The comprehensive evaluation index value of the boom stress during the hoisting process is used to comprehensively quantify the influence of the boom state on the overall safety of the hoisting operation.

[0028] Furthermore, the analysis obtains boom stress assessment information during the hoisting process. The specific analysis process is: based on the comprehensive assessment index value of the boom stress during the hoisting process, the boom stress assessment information during the hoisting process is analyzed and obtained. The boom stress assessment information during the hoisting process includes boom qualification, boom abnormality and boom failure.

[0029] The comprehensive evaluation index value of the boom stress during the hoisting process is compared with the set first threshold value. If the comprehensive evaluation index value of the boom stress during the hoisting process is higher than or equal to the set first threshold value, the boom stress evaluation information during the hoisting process is marked as the boom is qualified.

[0030] If the comprehensive evaluation index value of the boom stress during the hoisting process is lower than the set first threshold, the comprehensive evaluation index value of the boom stress during the hoisting process is compared with the set second threshold; if the comprehensive evaluation index value of the boom stress during the hoisting process is higher than or equal to the set second threshold, the comprehensive evaluation index value of the boom stress during the hoisting process is marked as boom abnormality.

[0031] If the comprehensive evaluation index value of the boom stress during the hoisting process is lower than the set second threshold, the boom stress evaluation information during the hoisting process is marked as a boom failure.

[0032] Furthermore, the hoisting process is adjusted, and the specific process is: extracting the boom stress assessment information during the hoisting process, if the boom stress assessment information during the hoisting process is that the boom is qualified, continue to configure the sensor device at the current sensor monitoring frequency.

[0033] If the boom stress assessment information during the hoisting process is that the boom is abnormal, the difference between the set first threshold and the comprehensive boom stress assessment index value during the hoisting process is extracted and recorded as the monitoring and adjustment control value during the hoisting process. The monitoring and adjustment control value during the hoisting process is matched with the sensor monitoring frequency adjustment supplement ratio corresponding to each monitoring and adjustment control value interval stored in the hoisting detection database. The sensor monitoring frequency adjustment supplement ratio corresponding to the interval of the monitoring and adjustment control value during the hoisting process is counted and recorded as the sensor monitoring frequency adjustment supplement ratio during the hoisting process. The sensor device is configured according to the corresponding sensor monitoring frequency adjustment supplement ratio.

[0034] If the boom stress assessment information during the hoisting process is a boom failure, the boom stress assessment information during the hoisting process is sent to the management terminal for early warning.

[0035] Furthermore, the communication network transmission anomaly comprehensive evaluation value has specific analysis conditions as follows: ; In the formula, Indicates the comprehensive evaluation value of communication network transmission anomaly. represents the communication transmission rate of the i-th sensor device, represents the reference data transmission rate of the i-th sensor device, represents the communication transmission signal strength of the i-th sensor device, represents the reference communication transmission signal strength of the set i-th sensor device, represents the communication transmission response time of the i-th sensor device, Indicates the weight factor corresponding to the set communication transmission response time. Indicates the network transmission throughput. Indicates the set reference network transmission throughput. Indicates the network transmission delay time. Indicates the weight factor corresponding to the set network transmission delay time Indicates the network transmission packet loss rate. represents the weight factor corresponding to the set network transmission packet loss rate, i represents the number of each sensor device, , n represents the total number of sensing devices, and e represents a natural constant.

[0036] The second aspect of the present invention provides a boom stress detection system for use in a hoisting process, comprising: a data acquisition module, which is used for the edge computing node to sense the hoisting start signal, and to start the acquisition device to perform pre-operation communication verification to obtain the acquisition device verification data.

[0037] The hoisting operation pre-adjustment module is used to obtain the historical data of the hoisting load, and conduct comprehensive processing in combination with the verification data of the acquisition device, and perform corresponding pre-operation adjustments based on the comprehensive processing results.

[0038] The hoisting operation process analysis module is used to output a feasible signal for the hoisting operation through the edge computing node after adjustments before the operation, and to execute the hoisting operation. It also detects the hoisting process simultaneously, analyzes and obtains the comprehensive evaluation index value of the boom stress during the hoisting process, and then analyzes and obtains the boom stress evaluation information during the hoisting process, and adjusts the hoisting process.

[0039] The present invention has the following beneficial effects: (1) The present invention provides a method and system for detecting boom stress during the lifting process. First, the verification data of the acquisition device is obtained, and the historical data of the lifting load is simultaneously acquired for analysis, which can improve the accuracy and reliability of data acquisition. Then, the corresponding pre-operation adjustments are performed according to the comprehensive processing results, which can optimize the lifting process and improve the efficiency and safety of the lifting operation. Finally, the lifting process is detected and adjusted simultaneously, which can dynamically adjust the lifting operation and reduce the risk of accidents.

[0040] (2) The present invention obtains the historical data of the lifting load, combines it with the verification data of the collection device for comprehensive processing and performs corresponding pre-operation adjustments, which helps to improve the stability of the communication link of the collection device, reduce the errors in lifting data transmission, and improve the reliability of the lifting monitoring system. Combined with the historical data of the lifting load, it can more accurately prepare for the upcoming lifting operation, optimize the allocation of lifting resources and the lifting operation plan, and reduce the risk of lifting operations.

[0041] (3) The present invention obtains the comprehensive evaluation index value of the boom stress during the lifting process by analyzing, and can monitor the stress state of the boom in real time, promptly discover abnormal conditions during the lifting process and make adjustments, and issue early warnings, which can reduce the possibility of accidents, improve the safety of lifting operations, help reduce equipment damage caused by excessive stress, and reduce the situation where the boom is in a high stress state for a long time, thereby extending the service life of the lifting equipment and reducing maintenance costs.

[0042] (4) The present invention obtains boom stress assessment information during the hoisting process by analyzing and adjusting the hoisting process, thereby timely discovering boom stress anomalies, improving the safety of hoisting operations, reducing accidents such as structural damage or collapse caused by excessive boom stress, reducing downtime caused by boom stress problems, maintaining the continuity of hoisting operations, optimizing the hoisting process, and improving hoisting operation efficiency.

[0043] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0045] Figure 2 It is a schematic diagram of system module connection of the present invention.

[0046] Figure 3 This is an example diagram of the boom height change rate changing over time during the lifting process. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0048] See also Figure 1 As shown, the first aspect of an embodiment of the present invention provides a technical solution: a method for detecting boom stress during lifting, comprising an edge computing node sensing a lifting start signal, and starting a collection device to perform a pre-operation communication verification to obtain collection device verification data.

[0049] It should be added that starting the acquisition device to perform communication verification before operation can monitor the communication status of the lifting equipment and the working condition of the sensor in advance. Through advance verification, potential system failures or communication problems can be discovered in time, reducing safety accidents caused by failure of the monitoring system during the lifting process. It helps to discover and solve possible data transmission problems in advance and reduce unexpected downtime during lifting operations.

[0050] Obtain historical data of hoisting load, and perform comprehensive processing in combination with the verification data of the acquisition device, and perform corresponding pre-operation adjustments based on the comprehensive processing results.

[0051] After adjustments before the operation, the edge computing node outputs a feasible signal for the hoisting operation, and the hoisting operation is executed. The hoisting process is simultaneously detected, and the comprehensive evaluation index value of the boom stress during the hoisting process is analyzed to obtain the boom stress evaluation information during the hoisting process, and the hoisting process is adjusted.

[0052] Specifically, the device verification data includes communication transmission data and network performance verification data.

[0053] The communication transmission data includes the communication transmission rate, communication transmission signal strength and communication transmission response time of each sensor device.

[0054] It should be added that the communication transmission rate of each sensor device can be monitored using a network performance testing tool to obtain the communication transmission rate and communication transmission response time of each sensor device, and the communication transmission signal strength of each sensor device can be directly measured by a spectrum analyzer.

[0055] The network performance verification data includes network transmission throughput, network transmission delay duration and network transmission packet loss rate.

[0056] It should be added that network transmission throughput refers to the amount of data that the network can transmit per unit time. The network transmission delay duration and network transmission packet loss rate can be monitored through network performance testing tools.

[0057] Specifically, the historical data of the hoisting load is obtained, and is comprehensively processed in combination with the verification data of the acquisition device. The specific process is: the historical data of the hoisting load includes the historical number of hoisting times, the historical cumulative hoisting weight and the historical average boom height.

[0058] It should be added that the historical number of hoisting operations, historical cumulative hoisting weight and historical average boom height can be obtained through the use log records of the hoisting equipment.

[0059] Based on the communication transmission data and the network performance verification data, a comprehensive evaluation value of the communication network transmission anomaly is obtained through processing, and the comprehensive evaluation value of the communication network transmission anomaly is used to comprehensively quantify the influence of the network transmission anomaly on the stability of the lifting operation.

[0060] It should be added that in the process of analyzing and obtaining the comprehensive evaluation value of the communication network transmission anomaly, the communication transmission response time, network transmission delay time and network transmission packet loss rate of each sensor device were de-normalized.

[0061] Specifically, the comprehensive evaluation value of communication network transmission anomaly, the specific analysis conditions are: ; In the formula, Indicates the comprehensive evaluation value of communication network transmission anomaly. represents the communication transmission rate of the i-th sensor device, represents the reference data transmission rate of the i-th sensor device, represents the communication transmission signal strength of the i-th sensor device, represents the reference communication transmission signal strength of the set i-th sensor device, represents the communication transmission response time of the i-th sensor device, Indicates the weight factor corresponding to the set communication transmission response time. Indicates the network transmission throughput. Indicates the set reference network transmission throughput. Indicates the network transmission delay time. Indicates the weight factor corresponding to the set network transmission delay time Indicates the network transmission packet loss rate. represents the weight factor corresponding to the set network transmission packet loss rate, i represents the number of each sensor device, , n represents the total number of sensing devices, and e represents a natural constant.

[0062] It should be added that, in this embodiment, the weight factor corresponding to the preset communication transmission response duration, the weight factor corresponding to the network transmission delay duration and the weight factor corresponding to the network transmission packet loss rate are obtained from the hoisting detection database.

[0063] It needs to be explained that the weight factor corresponding to the communication transmission response time, the weight factor corresponding to the network transmission delay time and the weight factor corresponding to the network transmission packet loss rate respectively represent the numerical values ​​of the influence of the communication transmission response time, the network transmission delay time and the network transmission packet loss rate of each sensor device on the comprehensive evaluation value of the communication network transmission anomaly. These corresponding relationships are pre-set mapping relationships. The real-time device verification data is input into the mapping set of the device verification data obtained from the lifting detection database and the weight factor corresponding to the device verification data to obtain the weight factor corresponding to the device verification data. For example, the real-time communication transmission response time, the network transmission delay time and the network transmission packet loss rate are respectively input into the mapping set of the device verification data obtained from the lifting detection database and the weight factor corresponding to the device verification data to obtain the weight factor corresponding to the communication transmission response time, the weight factor corresponding to the network transmission delay time and the weight factor corresponding to the network transmission packet loss rate can be obtained.

[0064] It should be added that the communication transmission rate of each sensor device, the communication transmission signal strength of each sensor device, the communication transmission response time of each sensor device, the network transmission throughput, the network transmission delay time and the network transmission packet loss rate are related to each other and do not exist independently. For example, the communication transmission rate, communication transmission signal strength and communication transmission response time of each sensor device directly affect the quality and efficiency of the communication transmission of the sensor device, while the network transmission throughput, network transmission delay time and network transmission packet loss rate determine the stability and responsiveness of the entire communication system. These parameters interact and restrict each other, and cannot be simply designed and combined to determine the quality and efficiency of the communication transmission of the sensor device. Unique optimization, specifically, the communication transmission rate is closely related to the network transmission throughput. A higher communication transmission rate usually requires a lower network transmission delay time, while the communication transmission signal strength affects the data transmission stability. When the communication transmission signal strength is weak, it may lead to a higher network transmission delay time and a larger network transmission packet loss rate. The communication transmission response time is directly related to the network transmission delay time. When the network transmission delay time is high, the communication transmission response time will usually increase. Comprehensive analysis can obtain the comprehensive evaluation value of the communication network transmission anomaly, which can more accurately evaluate whether there are potential anomalies in the communication network, thereby optimizing the system communication transmission performance.

[0065] Based on the historical data of hoisting load, a hoisting load benchmark value is obtained through comprehensive analysis, and the hoisting load benchmark value is used to comprehensively quantify the influence of the hoisting operation load on the performance of the hoisting equipment.

[0066] It should be added that in the process of analyzing and obtaining the benchmark value of the lifting load, the historical number of liftings, historical cumulative lifting weight and historical average boom height were all de-normalized.

[0067] In this embodiment, the hoisting load reference value can be obtained by the following analysis method, and the specific analysis conditions are as follows: ; In the formula, Indicates the reference value of the lifting load. Indicates the number of historical hoisting times. Indicates the compensation factor corresponding to the set number of historical lifting times. Indicates the historical cumulative lifting weight. Indicates the compensation factor corresponding to the set historical cumulative lifting weight. represents the historical average boom height, It represents the compensation factor corresponding to the set historical average boom height, and e represents a natural constant.

[0068] It should be added that, in this embodiment, the compensation factor corresponding to the preset historical lifting times, the compensation factor corresponding to the historical cumulative lifting weight and the compensation factor corresponding to the historical average boom height are obtained from the lifting detection database.

[0069] It needs to be explained that the compensation factors corresponding to the historical number of hoisting operations, the historical cumulative hoisting weight and the historical average boom height respectively represent the numerical values ​​of the influence of the historical number of hoisting operations, the historical cumulative hoisting weight and the historical average boom height on the hoisting load benchmark value. These corresponding relationships are pre-set mapping relationships. The real-time historical data of hoisting load is input into the mapping set of the historical data of hoisting load obtained from the hoisting detection database and the compensation factors corresponding to the historical data of hoisting load, so as to obtain the compensation factors corresponding to the historical data of hoisting load. For example, the real-time historical number of hoisting operations, the historical cumulative hoisting weight and the historical average boom height are respectively input into the mapping set of the historical data of hoisting load obtained from the hoisting detection database and the compensation factors corresponding to the historical data of hoisting load, so as to obtain the compensation factors corresponding to the historical number of hoisting operations, the historical cumulative hoisting weight and the historical average boom height.

[0070] It should be added that there is a correlation between the historical number of hoisting times, the historical cumulative hoisting weight and the historical average boom height, and they do not exist independently. The historical number of hoisting times reflects the frequency of use of the hoisting equipment, while the historical cumulative hoisting weight directly affects the load capacity and performance consumption of the hoisting equipment, and the historical average boom height affects the operating range and stability requirements of the boom equipment. These four parameters are interrelated and cannot be accurately evaluated through simple design and combination. For example, a higher historical number of hoisting times and a larger historical cumulative hoisting weight may cause the equipment to be overloaded, thereby affecting the life and stability of the equipment, while a higher historical average boom height may place higher requirements on the operability and structural strength of the boom equipment. Comprehensive analysis to obtain the hoisting load benchmark value can more accurately quantify the impact of the hoisting operation load on the performance of the hoisting equipment, and improve the accuracy and reliability of the hoisting equipment performance evaluation.

[0071] It should be noted that the more historical hoisting times there are and the larger the historical cumulative hoisting weight, the more accumulated load the hoisting equipment has to bear, which will have a greater impact on the performance of the hoisting equipment and the larger the hoisting load benchmark value. The higher the historical average boom height, the greater the torque and possible load the boom equipment has to bear and the larger the hoisting load benchmark value.

[0072] The hoisting load reference value is matched with the communication network transmission regulation interference factor corresponding to each hoisting load reference value interval stored in the hoisting detection database, and the communication network transmission regulation interference factor corresponding to the hoisting load reference value interval is counted and recorded as the communication network transmission regulation influencing factor.

[0073] It should be noted that hoisting equipment usually relies on real-time data transmission for monitoring and control, especially in remote operation, status feedback and equipment scheduling. When the hoisting load is heavy, the performance, stability and sensor response time of the crane will be affected, causing the control system to respond slowly or inaccurately to the equipment, thereby affecting the efficiency and safety of the hoisting operation. Matching the hoisting load baseline value with the communication network transmission regulation interference factor is to quantify the actual impact of the hoisting load on the communication system and evaluate the stability and efficiency of the communication network under different hoisting loads.

[0074] Based on the comprehensive evaluation value of communication network transmission anomaly and the communication network transmission regulation influencing factor, a comprehensive analysis is performed to obtain the communication network transmission anomaly index value.

[0075] It should be noted that the product of the comprehensive evaluation value of communication network transmission anomaly and the communication network transmission regulation influencing factor is used as the communication network transmission anomaly index value, which comprehensively considers the device verification data and the lifting load historical data, can improve the accuracy of communication network transmission anomaly assessment, optimize the configuration and use of lifting equipment, and improve the resource utilization of lifting equipment.

[0076] According to the communication network transmission anomaly index value, a comprehensive processing result is analyzed to obtain the comprehensive processing result, and the comprehensive processing result includes the communication network transmission anomaly and the communication network transmission normal.

[0077] The communication network transmission abnormality index value is compared with the set communication network transmission abnormality index threshold. If the communication network transmission abnormality index value is higher than the set communication network transmission abnormality index threshold, the comprehensive processing result is marked as communication network transmission abnormality. If the communication network transmission abnormality index value is lower than or equal to the set communication network transmission abnormality index threshold, the comprehensive processing result is marked as communication network transmission normal.

[0078] Specifically, the corresponding pre-job adjustments are performed according to the comprehensive processing results. The specific process is: extract the comprehensive processing results. If the comprehensive processing results show that the communication network transmission is normal, continue to monitor and transmit the communication network data for the lifting process with the current communication network transmission configuration; if the comprehensive processing results show that the communication network transmission is abnormal, perform data monitoring and transmission configuration for the lifting process according to the preset communication transmission frequency and network transmission bandwidth, and send the early warning information to the mobile transmission terminal.

[0079] It should be added that data monitoring and transmission configuration for the hoisting process based on the preset communication transmission frequency and network transmission bandwidth can optimize the stability of data transmission, reduce data loss or transmission delays caused by network problems, help to more efficiently utilize network resources, improve the speed and efficiency of data transmission, and thus reduce the impact of unstable communication transmission on hoisting operations.

[0080] Specifically, the hoisting process is detected synchronously, and the specific process is: the hoisting process is detected to obtain the hoisting path data and the boom stress parameters during the hoisting process.

[0081] The hoisting path data during the hoisting process includes a hoisting height change rate and a hoisting path offset during the hoisting process.

[0082] It should be added that the lifting height change rate during the lifting process refers to the rate of change of the lifting object (such as a crane hook or sling) relative to the ground height during the lifting process, and the lifting path offset during the lifting process refers to the deviation of the lifting object in the horizontal direction during the lifting process. The lifting height change rate and lifting path offset during the lifting process can be obtained by comprehensive measurement using cameras and image recognition technology.

[0083] The boom stress parameters during the hoisting process include the maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height during the hoisting process.

[0084] It should be noted that Figure 3 This is an example diagram of the boom height change rate changing with time during the lifting process, such as Figure 3 As shown, the horizontal axis represents time, the vertical axis represents the rate of change of boom height, and the corresponding curve label is a.

[0085] It should be added that the maximum boom stress during the lifting process refers to the stress per unit area of ​​the maximum internal force distribution that the boom bears during the lifting process; the maximum boom strain during the lifting process refers to the maximum deformation caused by the force on the boom during the lifting process, and the maximum boom stress and maximum boom strain during the lifting process can be measured by strain gauges; the maximum rate of change of the boom angle during the lifting process refers to the rate at which the boom angle changes during the lifting process, and the maximum rate of change of the boom angle is monitored in real time by an angle sensor installed on the boom; the maximum boom deflection during the lifting process refers to the maximum deformation of the boom in the vertical direction caused by gravity or external loads during the lifting process, that is, the curvature of the boom; the maximum rate of change of the boom height during the lifting process refers to the rate at which the boom height changes during the lifting process, and the maximum boom deflection and maximum rate of change of the boom height during the lifting process can be monitored by displacement sensors.

[0086] Based on the hoisting path data during the hoisting process, a hoisting deflection value during the hoisting process is obtained through comprehensive analysis. The hoisting deflection value during the hoisting process is used to comprehensively quantify the influence of the deviation of the hoisting path on the safety of the hoisting operation.

[0087] It should be added that, in the process of analyzing and obtaining the hoisting deflection value during the hoisting process, the hoisting path offset during the hoisting process was denormalized.

[0088] In this embodiment, the hoisting deflection value during the hoisting process can be obtained by the following analysis method, and the specific analysis conditions are as follows: ; In the formula, Indicates the hoisting deflection value during the hoisting process. Indicates the rate of change of the hoisting height during the hoisting process. Indicates the set reference lifting height change rate, Indicates the hoisting path offset during the hoisting process. It represents the weight factor corresponding to the set lifting path offset, and e represents a natural constant.

[0089] It should be added that, in the present embodiment, a weight factor corresponding to a preset lifting path offset is obtained from the lifting detection database, and the weight factor corresponding to the lifting path offset represents a numerical value of the degree of influence of the lifting path offset during the lifting process on the lifting skewness value. These corresponding relationships are pre-set mapping relationships, and the real-time lifting path offset during the lifting process is input into the mapping set of the lifting path offset during the lifting process obtained in the lifting detection database and the weight factor corresponding to the lifting path offset to obtain the weight factor corresponding to the lifting path offset.

[0090] A comprehensive analysis is performed on the boom stress parameters during the hoisting process to obtain a boom stress evaluation value during the hoisting process, and the boom stress evaluation value during the hoisting process is used to comprehensively quantify the boom safety and structural performance.

[0091] It should be added that, in the process of analyzing and obtaining the boom stress evaluation value during the lifting process, the maximum boom stress, maximum boom strain, maximum boom angle change rate, maximum boom deflection and maximum boom height change rate during the lifting process were all denormalized.

[0092] In this embodiment, the boom stress evaluation value during the hoisting process can be obtained by the following analysis method, and the specific analysis conditions are as follows: ; In the formula, Indicates the boom stress assessment value during the lifting process. Indicates the maximum boom stress during the lifting process, Indicates the correction factor corresponding to the set maximum boom stress, represents the maximum boom strain during the lifting process, Indicates the correction factor corresponding to the set maximum boom strain, Indicates the maximum change rate of the boom angle during the lifting process. Indicates the correction factor corresponding to the set maximum change rate of the boom angle, Indicates the maximum boom deflection during the lifting process, Indicates the correction factor corresponding to the set maximum boom deflection, Indicates the maximum change rate of the boom height during the lifting process. Indicates the correction factor corresponding to the set maximum change rate of the boom height.

[0093] It should be added that, in the present embodiment, the correction factor corresponding to the preset maximum boom stress, the correction factor corresponding to the maximum boom strain, the correction factor corresponding to the maximum rate of change of the boom angle, the correction factor corresponding to the maximum boom deflection and the correction factor corresponding to the maximum rate of change of the boom height are obtained from the lifting detection database.

[0094] It should be explained that the correction factors corresponding to the maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height respectively represent the numerical values ​​of the influence of the maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height during the lifting process on the boom stress evaluation value. These corresponding relationships are pre-set mapping relationships. The real-time boom stress parameters during the lifting process are input into the mapping set of the boom stress parameters during the lifting process obtained from the lifting detection database and the correction factors corresponding to the boom stress parameters to obtain the compensation factors corresponding to the boom stress parameters. For example, the real-time maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height during the lifting process are respectively input into the mapping set of the boom stress parameters during the lifting process obtained from the lifting detection database and the correction factors corresponding to the boom stress parameters to obtain the correction factors corresponding to the maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height during the lifting process.

[0095] It should be added that the maximum boom stress, maximum boom strain, maximum boom angle change rate, maximum boom deflection and maximum boom height change rate during the lifting process are correlated and do not exist independently. For example, changes in the boom angle will directly affect the stress distribution of the boom, while the boom strain reflects the degree of deformation of the boom under the action of force. The deflection and height change rate of the boom are closely related to the supporting structure of the boom. The greater the boom deflection, the more significant the height change rate that may be caused. The force distribution during the lifting process is directly related to the stability of the structure. Only the analysis of a single indicator cannot fully evaluate the stress state of the boom. Comprehensive analysis of the boom stress assessment value during the lifting process can more accurately reflect the overall stress state of the boom during the lifting process, and thus accurately quantify the risk of equipment structural safety.

[0096] It should be noted that the greater the maximum boom stress during the lifting process, the greater the internal force on the boom, which may cause material damage; the smaller the boom stress assessment value during the lifting process, the greater the maximum boom strain, which means that the deformation of the boom may exceed the normal working range and may affect the stability and safety of the lifting; the smaller the boom stress assessment value during the lifting process, the greater the maximum rate of change of the boom angle during the lifting process, indicating that there are severe dynamic loads or unstable operating conditions during the lifting process; the smaller the boom stress assessment value during the lifting process, the greater the maximum boom deflection during the lifting process, the smaller the boom stress assessment value during the lifting process, the greater the maximum rate of change of the boom height during the lifting process, and the smaller the boom stress assessment value during the lifting process.

[0097] Specifically, the comprehensive evaluation index value of the boom stress during the lifting process is analyzed and obtained. The specific analysis process is: matching the lifting deflection value during the lifting process with the lifting adjustment interference factor corresponding to each lifting deflection value interval stored in the lifting detection database, and counting the lifting adjustment interference factor corresponding to the interval in which the lifting deflection value is located, which is recorded as the lifting adjustment influencing factor.

[0098] A comprehensive analysis is performed based on the boom stress evaluation value and the hoisting adjustment influencing factors during the hoisting process to obtain a comprehensive evaluation index value of the boom stress during the hoisting process. The comprehensive evaluation index value of the boom stress during the hoisting process is used to comprehensively quantify the influence of the boom state on the overall safety of the hoisting operation.

[0099] It should be supplemented that the product of the boom stress evaluation value during the hoisting process and the hoisting adjustment influencing factor is used as the comprehensive evaluation index value of the boom stress during the hoisting process.

[0100] It should be noted that a comprehensive evaluation index value of the boom stress during the hoisting process is obtained by comprehensive analysis of the hoisting path data and the boom stress parameters during the hoisting process, which helps to understand the stress state of the boom during the hoisting process, thereby adjusting the operation process, reducing equipment damage caused by excessive stress, reducing time loss caused by boom equipment failure or safety shutdown, and improving the continuity and efficiency of the hoisting operation.

[0101] Specifically, the boom stress assessment information during the hoisting process is analyzed and obtained. The specific analysis process is: according to the comprehensive assessment index value of the boom stress during the hoisting process, the boom stress assessment information during the hoisting process is analyzed and obtained. The boom stress assessment information during the hoisting process includes boom qualification, boom abnormality and boom failure.

[0102] The comprehensive evaluation index value of the boom stress during the hoisting process is compared with the set first threshold value. If the comprehensive evaluation index value of the boom stress during the hoisting process is higher than or equal to the set first threshold value, the boom stress evaluation information during the hoisting process is marked as the boom is qualified.

[0103] If the comprehensive evaluation index value of the boom stress during the hoisting process is lower than the set first threshold, the comprehensive evaluation index value of the boom stress during the hoisting process is compared with the set second threshold; if the comprehensive evaluation index value of the boom stress during the hoisting process is higher than or equal to the set second threshold, the comprehensive evaluation index value of the boom stress during the hoisting process is marked as boom abnormality.

[0104] If the comprehensive evaluation index value of the boom stress during the hoisting process is lower than the set second threshold, the boom stress evaluation information during the hoisting process is marked as a boom failure.

[0105] It should be added that the second threshold is usually the lowest safe working limit of the set boom stress comprehensive evaluation index value. A value lower than the second threshold indicates that the lifting equipment is overloaded or damaged. The first threshold is usually set above the second threshold, close to the working limit of the boom. The first threshold is a warning value used to identify potential risks in the boom's working state. If the boom's stress comprehensive evaluation index value is lower than the first threshold but still higher than or equal to the second threshold, it means that the boom stress is large and slight overload or fatigue may occur. The equipment needs to be monitored and may need to be inspected or adjusted.

[0106] Specifically, the hoisting process is adjusted, and the specific process is: extracting the boom stress assessment information during the hoisting process, if the boom stress assessment information during the hoisting process is that the boom is qualified, continue to configure the sensor device at the current sensor monitoring frequency.

[0107] If the boom stress assessment information during the hoisting process is that the boom is abnormal, the difference between the set first threshold and the comprehensive boom stress assessment index value during the hoisting process is extracted and recorded as the monitoring and adjustment control value during the hoisting process. The monitoring and adjustment control value during the hoisting process is matched with the sensor monitoring frequency adjustment supplement ratio corresponding to each monitoring and adjustment control value interval stored in the hoisting detection database. The sensor monitoring frequency adjustment supplement ratio corresponding to the interval of the monitoring and adjustment control value during the hoisting process is counted and recorded as the sensor monitoring frequency adjustment supplement ratio during the hoisting process. The sensor device is configured according to the corresponding sensor monitoring frequency adjustment supplement ratio.

[0108] It should be noted that adjusting the sensor monitoring frequency according to the comprehensive evaluation index value of the boom stress during the lifting process can improve the monitoring accuracy of the boom stress state, effectively capture the real-time state of the boom, and help to more promptly discover abnormal changes in boom stress, thereby taking measures to prevent potential safety accidents.

[0109] It should be added that the sensor device is configured with the corresponding sensor monitoring frequency adjustment supplement ratio. The specific process is to multiply the current sensor monitoring frequency of each sensor device with the sensor monitoring frequency adjustment supplement ratio to obtain the sensor target monitoring frequency of each sensor device, and configure the sensor device with the sensor target monitoring frequency of each sensor device. If the sensor target monitoring frequency of a sensor device is higher than the set maximum sensor monitoring frequency, the sensor device is configured with the maximum sensor monitoring frequency of the sensor device.

[0110] If the boom stress assessment information during the hoisting process is a boom failure, the boom stress assessment information during the hoisting process is sent to the management terminal for early warning.

[0111] It should be noted that a method and system for detecting boom stress during hoisting also includes a hoisting detection database, which is used to store the reference data transmission rate of each sensor device obtained by analyzing historical data, the reference communication transmission signal strength of each sensor device, the reference network transmission throughput, the weight factor corresponding to the communication transmission response time, the weight factor corresponding to the network transmission delay time, the weight factor corresponding to the network transmission packet loss rate, the compensation factor corresponding to the historical number of hoisting times, the compensation factor corresponding to the historical cumulative hoisting weight, the compensation factor corresponding to the historical average boom height, the communication network transmission abnormality index threshold, the reference hoisting height change rate, the weight factor corresponding to the hoisting path offset, the correction factor corresponding to the maximum boom stress, the correction factor corresponding to the maximum boom strain, the correction factor corresponding to the maximum change rate of the boom angle, the correction factor corresponding to the maximum boom deflection, the correction factor corresponding to the maximum change rate of the boom height, the first threshold, the second threshold, the maximum sensing monitoring frequency, the hoisting adjustment interference factor, the communication network transmission adjustment interference factor, the preset communication transmission frequency and network transmission bandwidth, and the sensor monitoring frequency adjustment supplementary ratio corresponding to each monitoring adjustment control value interval.

[0112] like Figure 2 The second aspect of the present invention provides a boom stress detection system for use in a hoisting process, including: a data acquisition module, which is used for the edge computing node to sense the hoisting start signal, and start the acquisition device to perform pre-operation communication verification to obtain the acquisition device verification data.

[0113] The hoisting operation pre-adjustment module is used to obtain the historical data of the hoisting load, and conduct comprehensive processing in combination with the verification data of the acquisition device, and perform corresponding pre-operation adjustments based on the comprehensive processing results.

[0114] The hoisting operation process analysis module is used to output a feasible signal for the hoisting operation through the edge computing node after adjustments before the operation, and to execute the hoisting operation. It also detects the hoisting process simultaneously, analyzes and obtains the comprehensive evaluation index value of the boom stress during the hoisting process, and then analyzes and obtains the boom stress evaluation information during the hoisting process, and adjusts the hoisting process.

[0115] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0116] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A method for detecting boom stress during hoisting, characterized in that: include: The edge computing node senses the hoisting start signal and starts the collection device to perform pre-operation communication verification to obtain the collection device verification data; Obtain historical data of hoisting loads, and perform comprehensive processing in combination with verification data of acquisition devices, and perform corresponding pre-operation adjustments based on the comprehensive processing results; After adjustments before the operation, the edge computing node outputs a feasible signal for the hoisting operation, and the hoisting operation is executed. The hoisting process is simultaneously detected, and the comprehensive evaluation index value of the boom stress during the hoisting process is analyzed to obtain the boom stress evaluation information during the hoisting process, and the hoisting process is adjusted.

2. A method for detecting boom stress during hoisting according to claim 1, characterized in that: The device verification data includes communication transmission data and network performance verification data; The communication transmission data includes the communication transmission rate, communication transmission signal strength and communication transmission response time of each sensor device; The network performance verification data includes network transmission throughput, network transmission delay duration and network transmission packet loss rate.

3. A method for detecting boom stress during hoisting according to claim 2, characterized in that: The above-mentioned acquisition of the historical data of the hoisting load and the comprehensive processing combined with the verification data of the acquisition device are as follows: The historical data of hoisting load includes the historical number of hoisting, the historical cumulative hoisting weight and the historical average boom height; Based on the communication transmission data and the network performance verification data, a comprehensive evaluation value of the communication network transmission anomaly is obtained by processing, and the comprehensive evaluation value of the communication network transmission anomaly is used to comprehensively quantify the influence of the network transmission anomaly on the stability of the hoisting operation; Based on the historical data of hoisting load, a hoisting load reference value is obtained through comprehensive analysis, and the hoisting load reference value is used to comprehensively quantify the influence of the hoisting operation load on the performance of the hoisting equipment; Match the hoisting load reference value with the communication network transmission regulation interference factor corresponding to each hoisting load reference value interval stored in the hoisting detection database, and count the communication network transmission regulation interference factor corresponding to the interval where the hoisting load reference value is located, and record it as the communication network transmission regulation influencing factor; Based on the comprehensive evaluation value of communication network transmission anomaly and the communication network transmission regulation influencing factor, a comprehensive analysis is performed to obtain the communication network transmission anomaly index value; Analyze and obtain a comprehensive processing result according to the communication network transmission abnormality index value, wherein the comprehensive processing result includes communication network transmission abnormality and communication network transmission normality; The communication network transmission abnormality index value is compared with the set communication network transmission abnormality index threshold. If the communication network transmission abnormality index value is higher than the set communication network transmission abnormality index threshold, the comprehensive processing result is marked as communication network transmission abnormality. If the communication network transmission abnormality index value is lower than or equal to the set communication network transmission abnormality index threshold, the comprehensive processing result is marked as communication network transmission normal.

4. A method for detecting boom stress during hoisting according to claim 3, characterized in that: The corresponding pre-operation adjustment is performed according to the comprehensive processing results, and the specific process is as follows: Extract the comprehensive processing results. If the comprehensive processing result shows that the communication network transmission is normal, continue to monitor and transmit the communication network data of the lifting process with the current communication network transmission configuration. If the comprehensive processing result shows that the communication network transmission is abnormal, perform data monitoring and transmission configuration for the lifting process according to the preset communication transmission frequency and network transmission bandwidth, and send the early warning information to the mobile transmission terminal.

5. The method for detecting arm stress during hoisting according to claim 1, characterized in that: The synchronous detection of the hoisting process is as follows: Detect the hoisting process to obtain the hoisting path data and the boom stress parameters during the hoisting process; The hoisting path data during the hoisting process includes the hoisting height change rate and the hoisting path offset during the hoisting process; The boom stress parameters during the hoisting process include the maximum boom stress, the maximum boom strain, the maximum rate of change of the boom angle, the maximum boom deflection and the maximum rate of change of the boom height during the hoisting process; Based on the hoisting path data during the hoisting process, a hoisting deflection value during the hoisting process is obtained by comprehensive analysis, and the hoisting deflection value during the hoisting process is used to comprehensively quantify the influence of the deviation of the hoisting path on the safety of the hoisting operation; A comprehensive analysis is performed on the boom stress parameters during the hoisting process to obtain a boom stress assessment value during the hoisting process, and the boom stress assessment value during the hoisting process is used to comprehensively quantify the impact of the boom stress state on the structural safety of the hoisting equipment.

6. A method for detecting boom stress during hoisting according to claim 5, characterized in that: The analysis obtains the comprehensive evaluation index value of the boom stress during the lifting process. The specific analysis process is as follows: Match the hoisting deflection value in the hoisting process with the hoisting adjustment interference factor corresponding to each hoisting deflection value interval stored in the hoisting detection database, and count the hoisting adjustment interference factor corresponding to the interval where the hoisting deflection value is located, which is recorded as the hoisting adjustment influencing factor; A comprehensive analysis is performed based on the boom stress evaluation value and the hoisting adjustment influencing factors during the hoisting process to obtain a comprehensive evaluation index value of the boom stress during the hoisting process. The comprehensive evaluation index value of the boom stress during the hoisting process is used to comprehensively quantify the influence of the boom state on the overall safety of the hoisting operation.

7. A method for detecting boom stress during hoisting according to claim 6, characterized in that: The analysis obtains the boom stress assessment information during the hoisting process. The specific analysis process is as follows: According to the comprehensive evaluation index value of the boom stress during the hoisting process, the boom stress evaluation information during the hoisting process is analyzed and obtained, wherein the boom stress evaluation information during the hoisting process includes the boom being qualified, the boom being abnormal, and the boom being faulty; Compare the comprehensive evaluation index value of the boom stress during the hoisting process with the set first threshold value. If the comprehensive evaluation index value of the boom stress during the hoisting process is higher than or equal to the set first threshold value, mark the boom stress evaluation information during the hoisting process as qualified. If the comprehensive evaluation index value of the boom stress during the hoisting process is lower than the set first threshold, the comprehensive evaluation index value of the boom stress during the hoisting process is compared with the set second threshold; if the comprehensive evaluation index value of the boom stress during the hoisting process is higher than or equal to the set second threshold, the comprehensive evaluation index value of the boom stress during the hoisting process is marked as boom abnormality; If the comprehensive evaluation index value of the boom stress during the hoisting process is lower than the set second threshold, the boom stress evaluation information during the hoisting process is marked as a boom failure.

8. A method for detecting boom stress during hoisting according to claim 7, characterized in that: The hoisting process is adjusted as follows: Extract the boom stress assessment information during the hoisting process. If the boom stress assessment information during the hoisting process indicates that the boom is qualified, continue to configure the sensor device at the current sensor monitoring frequency. If the boom stress assessment information during the hoisting process is that the boom is abnormal, the difference between the set first threshold and the boom stress comprehensive assessment index value during the hoisting process is extracted and recorded as the monitoring and adjustment control value during the hoisting process, and the monitoring and adjustment control value during the hoisting process is matched with the sensor monitoring frequency adjustment supplement ratio corresponding to each monitoring and adjustment control value interval stored in the hoisting detection database, and the sensor monitoring frequency adjustment supplement ratio corresponding to the interval of the monitoring and adjustment control value during the hoisting process is counted and recorded as the sensor monitoring frequency adjustment supplement ratio during the hoisting process, and the sensor device is configured according to the corresponding sensor monitoring frequency adjustment supplement ratio; If the boom stress assessment information during the hoisting process is a boom failure, the boom stress assessment information during the hoisting process is sent to the management terminal for early warning.

9. The method for detecting arm stress during hoisting according to claim 3, characterized in that: The communication network transmission anomaly comprehensive evaluation value, the specific analysis conditions are: ； In the formula, Indicates the comprehensive evaluation value of communication network transmission anomaly. represents the communication transmission rate of the i-th sensor device, represents the reference data transmission rate of the i-th sensor device, represents the communication transmission signal strength of the i-th sensor device, represents the reference communication transmission signal strength of the set i-th sensor device, represents the communication transmission response time of the i-th sensor device, Indicates the weight factor corresponding to the set communication transmission response time. Indicates the network transmission throughput. Indicates the set reference network transmission throughput. Indicates the network transmission delay time. Indicates the weight factor corresponding to the set network transmission delay time Indicates the network transmission packet loss rate. represents the weight factor corresponding to the set network transmission packet loss rate, i represents the number of each sensor device, , n represents the total number of sensing devices, and e represents a natural constant.

10. A boom stress detection system used in a hoisting process, characterized in that: include: The data acquisition module is used for the edge computing node to sense the hoisting start signal, and start the acquisition device to perform pre-operation communication verification to obtain the acquisition device verification data; The lifting operation pre-adjustment module is used to obtain the historical data of the lifting load, and conduct comprehensive processing in combination with the verification data of the acquisition device, and perform corresponding pre-operation adjustments according to the comprehensive processing results; The hoisting operation process analysis module is used to output a feasible signal for the hoisting operation through the edge computing node after adjustments before the operation, and to execute the hoisting operation. It also detects the hoisting process simultaneously, analyzes and obtains the comprehensive evaluation index value of the boom stress during the hoisting process, and then analyzes and obtains the boom stress evaluation information during the hoisting process, and adjusts the hoisting process.

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