Tower pole self-standing method with self-standing safety detection function

Abstract

The application provides a tower pole self-standing method with a self-standing safety detection function, and belongs to the technical field of detection devices.The tower pole self-standing device with the self-standing safety detection function comprises a first ultrasonic generator, a second ultrasonic generator, a first ultrasonic receiver, a second ultrasonic receiver and a control chip, the control chip is integrated with an ultrasonic generator control module and a construction stress analysis module, the construction stress analysis module is used for analyzing first reception signals and second reception signals collected by the first and second ultrasonic receivers to obtain tower pole stress in construction, and an alarm is given to construction personnel when the tower pole stress exceeds a stress threshold value; and the self-standing device can improve the reliability and stability of a tower pole structure.

Description

Technical Field

[0001] This invention belongs to the field of detection device technology, and more specifically, relates to a method for self-standing towers with self-standing safety detection function. Background Technology

[0002] A tower is a vertical structure used to support power transmission lines, communication signal towers, radio and television transmission towers, and other infrastructure. It is typically made of materials such as metal or concrete and is used to bear the weight of the lines or antennas while maintaining them at the appropriate height and position. The height of a tower can vary as needed, ranging from tens to hundreds of meters. Substation auxiliary equipment towers, as an important component of auxiliary equipment, play a role in supporting and suspending auxiliary equipment and fulfilling their different functions at high altitudes to meet the substation's requirements and achieve the desired results. Currently, the erection of substation auxiliary equipment towers is usually carried out using cranes, and for large towers, personnel are required to assemble them at high altitudes. Besides consuming a significant amount of manpower and resources, there are numerous safety regulations and requirements regarding various lifting tools, personal protective equipment, and the tools used by personnel.

[0003] Lifting towers with cranes presents challenges, including maintaining safe distances from electrical equipment within the station and limitations imposed by the station's spatial environment. Personnel working at height also face the risk of falls. Tower lifting is also subject to weather conditions, and towers placed upright in their installation positions are prone to misalignment and displacement. Furthermore, the station requires numerous auxiliary towers for lighting, monitoring, and other functions, with corresponding auxiliary equipment mounted on their tops, such as lighting towers, camera towers, and drone jammer towers. In some locations, the presence of high-voltage lines makes crane erection unsuitable. Existing technologies employ rotating mechanisms to erect horizontally placed towers, but due to the length of some towers, deformation or other unexpected situations can occur during the erection process due to gravity. Summary of the Invention

[0004] In view of this, the present invention provides a tower erection method with self-erecting safety detection function, which can improve the safety and maintainability of the tower erection process.

[0005] The present invention is implemented as follows: it includes a rotating device for rotating a tower from a horizontal state to an vertical state; at least two ultrasonic generators are provided at the bottom of the tower, and ultrasonic receivers are provided at positions near the top of the tower, the number of ultrasonic receivers being the same as the number of ultrasonic generators.

[0006] The control chip is used to analyze the signals received by at least two ultrasonic receivers during the process of the tower being erected by the erecting device, compare them with the data on the relationship between signals and stress pre-stored in the big data, determine the current stress obtained from the comparison in real time, and issue a normal / alarm indication.

[0007] Compared with existing technologies, the beneficial effects of the self-standing tower method with self-standing safety detection function provided by the present invention are: the device can detect whether there are signs of tilting or instability by monitoring the stress value of the tower's tilt degree; the self-standing safety detection function helps to improve the reliability and stability of the tower structure and enhance safety. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a flowchart of the ultrasonic generator control module of the present invention;

[0010] Figure 2 This is a flowchart of the construction stress analysis module of the present invention;

[0011] Figure 3 This is a schematic diagram of a self-supporting tower device with self-supporting safety detection function;

[0012] Figure 4 A diagram of a self-supporting platform lifting device for tower poles with self-supporting safety detection function;

[0013] Figure 5 A diagram of a self-supporting device locking mechanism for a tower with self-supporting safety detection function;

[0014] Figure 6 A diagram of a self-erecting device for towers with self-erecting safety detection function;

[0015] Figure 7 A diagram showing the support pulley of a self-supporting device for towers with self-supporting safety detection function;

[0016] Figure 8 This is a schematic diagram of a self-supporting tower device with self-supporting safety detection function;

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 10. Multifunctional lifting platform; 20. Platform lifting device; 21. Fixed pulley; 30. Transmission rail; 41. Main gear; 42. Reduction mechanism; 43. Handle; 50. Turning device; 60. Support pulley; 61. Locking device; 70. Liftable movable pulley; 80. Fixed support device. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] In this embodiment, existing wind turbine erection equipment can be used, employing a winch and drum to erect the wind turbine. Alternatively, the method described in this invention can be used to achieve the erection.

[0021] Embodiments of the present invention provide a rotating device, such as... Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, in this embodiment, the system includes a multi-functional lifting platform 10, a transmission rail 30, a self-standing device frame, a rotating device 50 for starting the device, and a support pulley 60 installed between the top of the multi-functional lifting platform 10 and the ground. The support pulley 60 has a locking function through a locking device 61. The top of the multi-functional lifting platform 10 is provided with a platform fixing device and a platform lifting device 20. The transmission rail 30 is installed inside the multi-functional lifting platform 10. The transmission rail 30 is used to lift the transmission rope and prevent swaying. The platform lifting device 20 is installed inside the platform fixing device at the top of the multi-functional lifting platform 10.

[0022] The self-standing device frame includes a main gear 41, a reduction mechanism 42, and a crank handle 43. When the device is started, the crank handle 43 rotates, driving the reduction mechanism 42 to connect to the rotating device 50 through the main gear 41.

[0023] In the above technical solution, the multi-functional lifting platform 10 has a cage-like structure. The bottom of the multi-functional lifting platform 10 is equipped with sensors. The upper part of the multi-functional lifting platform 10 is equipped with devices including lighting, cameras, anti-drone devices, and power equipment monitoring sensors. The multi-functional lifting platform 10 is lifted and lowered by the platform lifting device 20.

[0024] Furthermore, in the above technical solution, the platform lifting device 20 includes two diagonally opposite fixed pulleys 21, which are installed parallel to and connected to the rope track, and a damping buffer at each of the four corners. The damping buffers are used to stabilize the multi-functional lifting platform 10.

[0025] Furthermore, in the above technical solution, the device is provided with fixed support devices 80 installed at the four corners and liftable movable pulleys 70. When the device moves, the fixed support devices 80 are retracted and the telescopic shafts of the liftable movable pulleys 70 are extended.

[0026] When the device stops in the upright position of the tower, the movable pulley 70 can be retracted, and the movable shaft of the fixed support device 80 opens at a right angle. The support component lifts and fixes the device to prevent it from shifting away from the installation position during the tower erection process.

[0027] Furthermore, in the above technical solution, the reduction mechanism 42 is equipped with a reduction gear set that meshes with the main gear 41. When the device starts to rotate via a motor or winch, the small reduction gear of the reduction gear set drives the large reduction gear to rotate. By reducing the rotational speed of the large reduction gear, the rotational speed of the buffering tower erection device 50 is balanced, ensuring the tower is stable during erection. The tower erection device 50 includes a cylindrical rotating drum that, during rotation, drives the tower from a horizontal state to a vertical state.

[0028] A first ultrasonic generator, a second ultrasonic generator, a first ultrasonic receiver, a second ultrasonic receiver, and a control chip are installed on the tower to be erected. The first ultrasonic generator is located at one corner of the tower's base, and the second ultrasonic generator is located at the other corner. The two ultrasonic generators are fixed diagonally opposite each other, with the ultrasonic waves directed in an X-shape. This layout can simulate the stress difference caused by bending during the erection process. More ultrasonic generators can be installed, such as at the top of the tower, with the ultrasonic waves directed towards the base. Alternatively, multiple generators can be installed (5-10 units), and the maximum stress difference can be selected as the current stress value.

[0029] The first ultrasonic generator, the second ultrasonic generator, the first ultrasonic receiver, and the second ultrasonic receiver are all electrically connected to the control chip. The control chip integrates an ultrasonic generator control module and a construction stress analysis module. The ultrasonic generator control module is used to control the first and second ultrasonic generators respectively to generate corresponding first and second ultrasonic signals. The construction stress analysis module is used to analyze the first and second received signals collected by the first and second ultrasonic receivers to obtain the tower stress during construction. When the tower stress exceeds the stress threshold, an alarm is issued to the construction personnel.

[0030] like Figure 1 As shown, further, in the above technical solution, the execution steps of the ultrasonic generator control module are as follows:

[0031] S11. Initialize the parameters of the first and second ultrasonic generators, including the transmission frequency and transmission power.

[0032] S12. According to the preset transmission mode, the first ultrasonic generator is periodically triggered to transmit the first ultrasonic signal to the surface of the tower.

[0033] S13. Periodically trigger the second ultrasonic generator to emit a second ultrasonic signal onto the surface of the tower.

[0034] S14. Monitor and adjust the status of the first and second ultrasonic generators to control their normal operation.

[0035] The specific implementation steps of the ultrasonic generator control module during use are as follows:

[0036] Initialize the parameters of the first ultrasonic generator:

[0037] - Set the center frequency f1. Generally, the resonant frequency of the tower material is chosen to obtain a stronger response signal.

[0038] - Set the sound pressure level P1. Adjusting the power controls the intensity of the transmitted signal.

[0039] - Set the transmission mode to continuous wave or pulse wave, etc. Continuous wave is beneficial for signal analysis, while pulse wave can acquire material echo signals.

[0040] - Set the emission direction, orient the ultrasonic generator so that it is facing the contact surface with the tower.

[0041] Initialize the parameters of the second ultrasonic generator:

[0042] -The setup process is the same as for the first ultrasonic generator. Set parameters such as center frequency f2, sound pressure power P2, and transmission mode. Adjust the frequency ratios of the two generators to be 5 to 10 times or more.

[0043] - The emission direction is at a certain angle relative to the first generator to excite sound waves propagating in different directions.

[0044] - Monitor the frequency range of the transmitted signal to ensure it remains stable near the center frequency.

[0045] - Detect the magnitude of the emitted sound pressure power and keep it near the set value.

[0046] In this embodiment, the emission of two ultrasonic generators can be controlled simultaneously or alternately:

[0047] - First, the first generator is triggered, emitting an ultrasonic pulse signal.

[0048] -After a certain period of time, the second generator is triggered to emit an ultrasonic signal.

[0049] - By continuously alternating operation, ultrasonic responses in two directions can be obtained.

[0050] The specific parameters of the first and second ultrasonic generators are as follows:

[0051] Parameters of the first ultrasonic generator:

[0052] - Center frequency f1 = 0.1MHz;

[0053] -Sound pressure power P1 = 100W;

[0054] - The transmission mode is pulse wave;

[0055] - The launch direction is along the diagonal of the tower;

[0056] Parameters of the second ultrasonic generator:

[0057] - Center frequency f2 = 20MHz;

[0058] -Sound pressure power P2 = 80W;

[0059] - The transmission mode is pulse wave;

[0060] - The launch direction is orthogonal to the first generator, along the other diagonal of the tower;

[0061] By setting different center frequencies, the response characteristics of materials can be detected more comprehensively. Adjusting the sound pressure power can control the signal penetration depth.

[0062] like Figure 2 As shown, further, in the above technical solution, the execution steps of the construction stress analysis module are as follows:

[0063] S21. Obtain the first received signal received by the first ultrasonic receiver and the second received signal received by the second ultrasonic receiver.

[0064] S22. Analyze the first and second received signals and extract signal features, including information on signal amplitude and phase.

[0065] S23. Based on the ultrasonic acoustoelastic theory and the characteristics of the first and second received signals, calculate the stress values ​​in the two diagonal directions of the tower.

[0066] S24. Calculate the difference in stress, which is the stress value of the tower.

[0067] S25. Compare the calculated tower stress value with the preset stress threshold.

[0068] S26. If the stress value of the tower exceeds the stress threshold, it is determined that the stress on the tower is too great, the force is unstable, and there may be safety hazards. An alarm is issued to the construction personnel.

[0069] S27. During the tower erection process, repeat steps S21 to S26 periodically to monitor the stress changes of the tower in real time.

[0070] The specific implementation methods of steps S21-S22 above are as follows:

[0071] Obtain the first received signal x1(t) received by the first ultrasonic receiver and the second received signal x2(t) received by the second ultrasonic receiver.

[0072] The first received signal x1(t) is sampled and filtered:

[0073] (1) The signal x1(t) is sampled at a frequency f s Sampling is performed to obtain the sampling sequence {x1[n]}, where n = 0, 1, ..., N-1, and N is the number of sampling points. The sampling frequency f s The Nyquist sampling theorem must be satisfied; that is: f s ≥2B w B w This refers to the signal bandwidth.

[0074] (2) Low-pass filtering is applied to the sampled sequence to suppress high-frequency noise introduced during the sampling process. An FIR or IIR digital filter is used, and a low-pass filter H(z) with a cutoff frequency of B is selected. The filtering operation is performed to obtain the sequence y1[n]:

[0075]

[0076] Where h[n] are the filter coefficients and M is the filter order.

[0077] The second received signal x2(t) is subjected to the same sampling and filtering process as x1(t) to obtain the filtered sequence y2[n].

[0078] Convert the two signals into an analysis window:

[0079] (1) Extract a segment of length L from the sequence y1[n] as an analysis window, denoted as w1[n], n = 0, 1, ..., L-1. Similarly, extract an analysis window w2[n] of length L from y2[n].

[0080] (2) To reduce spectral leakage, windows can be added to the analysis window, such as the Hanning window:

[0081]

[0082]

[0083] Applying a fast Fourier transform to the windowed sequence yields the spectrum:

[0084]

[0085]

[0086] In the spectrum V of the two signals v1 [k],V v2 [k] Analyze and extract feature parameters:

[0087] (1) Detect the frequency point f where the maximum value of the spectrum is located. 1max ,f 2max These are the main frequency components of the first and second signals.

[0088] (2) Measure the spectral amplitude A1(f) of the two signals at these two frequency points respectively. 1max ),A2(f 1max ),A1(f 2max ),A2(f 2max ).

[0089] (3) Measure the initial phase values ​​of the two signals at these two frequency points.

[0090] The effects of the above steps:

[0091] By performing digital filtering, windowing, and FFT on the received signal, the spectral characteristic parameters of the signal can be extracted, including the main frequency components, the amplitude of the corresponding frequency points, and the initial phase. These characteristic parameters reflect the frequency domain characteristics of the signal and can be used to subsequently calculate the mechanical properties and stress state of the material based on the sound wave propagation model, thereby enabling the monitoring of tower stress.

[0092] Detailed implementation of S23:

[0093] The spectral characteristic parameters (main frequency component f) of the two signals obtained in steps S21-S22 are used to... 1max ,f 2max The amplitude A1(f) at the corresponding frequency point 1max ),A2(f 1max ),A1(f 2max ),A2(f 2max ) and phase As input samples.

[0094] Different modalities of the input signal, including longitudinal waves, transverse waves, and surface waves, are extracted using wavelet transform.

[0095] - Select the Daubechies wavelet as the mother wavelet and perform 5-level wavelet decomposition to decompose the signal into a low-frequency approximate signal A5 and detail signals D1 to D5.

[0096] - The low-frequency component A5 mainly contains the longitudinal wave component of the signal.

[0097] - The high-frequency components D1 to D3 mainly contain the transverse wave components of the signal.

[0098] - The highest frequency components D4 and D5 contain surface wave components.

[0099] A tower stress identification model based on a BP neural network is established. This model includes:

[0100] - Input layer: Modal signals of multiple waves after wavelet extraction.

[0101] - Hidden layer: The number of nodes in the hidden layer is determined based on experience.

[0102] - Output layer: Stress values ​​σ1, σ2 in the two diagonal directions of the tower.

[0103] Neural network training:

[0104] - Collect a large number of ultrasonic signal samples of towers under different stress states and their corresponding stress label data.

[0105] - Perform wavelet decomposition on the sample signal to obtain different wave mode components as input.

[0106] - The network is trained using stress-labeled data, and the network weights are updated using the backpropagation algorithm.

[0107] Repeat the training iterations multiple times until the network error meets the requirements.

[0108] Network testing:

[0109] - Input the modal components of the test sample into the network.

[0110] - The network outputs the stress values ​​in both directions of the test sample.

[0111] - Evaluate the error between the neural network's predicted output and the stress label data to verify the model's stress recognition performance. The effects of the above steps:

[0112] This method obtains different modal components of the signal through wavelet decomposition, which are used as input to a neural network. The network's powerful pattern recognition capability is used to model the nonlinear relationship between the signal and stress, thereby completing the intelligent calculation of the stress in both directions of the tower.

[0113] Detailed implementation of S24:

[0114] In step S23, the stress values ​​σ1 and σ2 of the tower in the two diagonal directions have been obtained. Now it is necessary to calculate the difference in stress, that is, the stress value of the tower.

[0115] The formula for calculating the stress difference is:

[0116] Δσ=∣σ1-σ2∣;

[0117] Where Δσ is the stress difference, i.e., the stress value of the tower; σ1 and σ2 are the stresses in the two diagonal directions, respectively. Substituting σ1 and σ2 into the above formula, we can obtain the stress value Δσ of the tower:

[0118] Δσ=∣σ1-σ2∣;

[0119] The following situations should be noted:

[0120] -If σ1>σ2, then Δσ=σ1-σ2;

[0121] -If σ2>σ1, then Δσ=σ2-σ1;

[0122] -If σ1=σ2, then Δσ=0.

[0123] Repeatedly calculate each newly obtained pair of σ1, σ2 values, update Δσ in real time, and monitor the stress changes of the tower in real time.

[0124] 4) If there is a case where σ1 = 0 or σ2 = 0, it means that the stress in that direction is 0, then directly take: Δσ = σ1, if σ2 = 0;

[0125] Δσ = σ2, if σ1 = 0;

[0126] If the stress value is measured in only one direction, denoted as σ, then take:

[0127] Δσ=∣σ∣;

[0128] The effects of the above steps:

[0129] The stress magnitude of the tower can be obtained by performing simple mathematical calculations on the stress values ​​in two directions. This calculation process is very clear and direct, primarily utilizing the concept of stress difference as a representative value for the tower stress. This method is simple and efficient, capable of obtaining tower stress based on stress monitoring, and dynamically displaying the stress state of the tower according to real-time updated stress values, providing important parameter references for safe tower construction.

[0130] Specific implementation methods of S25-S26:

[0131] The stress value Δσ of the tower has been calculated in step S24. Now it needs to be compared with a preset stress threshold to determine whether the tower is overloaded, which could lead to a safety accident.

[0132] Determine the stress threshold σ th :

[0133] Based on the tower's material strength parameters, cross-sectional shape, height, and other factors, and referring to relevant standards, its maximum allowable stress threshold σ is determined. th Alternatively, the stress threshold can be determined by industry experts based on their experience. The calculated tower stress Δσ is then compared with the threshold σ. th Comparison:

[0134]

[0135] If tower overload is detected, an overload alarm will be issued:

[0136] - A visual warning will be issued, and the on-site indicator lights will flash red.

[0137] -Issue an audible alarm, with a continuous alarm sound.

[0138] -At the same time, an overload alarm SMS will be automatically sent to the mobile device of the person in charge of construction.

[0139] If the overload continues, the main controller will automatically cut off the power supply and signal connections to the top of the tower to prevent further escalation of potential safety hazards. It will also readjust the tower's erection speed and the contact position between the tower and the erection device 50.

[0140] If the tower stress is normal, i.e., Δσ≤σ th If everything is normal, continue monitoring.

[0141] The above comparison and judgment process is repeated in real time to dynamically monitor the stress on the tower.

[0142] The effects of the above steps:

[0143] By comparing with the standard threshold, it can be determined whether the tower is overloaded. If overloaded, visual and audible warnings will be generated immediately, and an alarm SMS will be sent to the relevant person in charge. The power supply will also be automatically cut off to prevent further accidents.

[0144] Furthermore, in the above technical solution, the frequency multiple difference between the first received signal and the second received signal is greater than 10. This facilitates the differentiation of the two different received signals during subsequent signal analysis. In this embodiment, multiple ultrasonic generators can also be used, arranged at the bottom of the tower, along with corresponding multiple ultrasonic receivers.

[0145] Furthermore, in the above technical solution, the steps of the construction stress analysis module within the control chip include:

[0146] First, initialize the ultrasonic generator, set the center frequency of the ultrasonic wave to 2MHz, the transmission mode to pulse wave, and align the ultrasonic generator with the diagonal direction of the other end of the tower.

[0147] The construction stress analysis module triggers at least two ultrasonic generators to emit ultrasonic signals according to a preset cycle, and the receiving ultrasonic generator collects response echo signals; in this embodiment, multiple ultrasonic transmitters can be set.

[0148] The construction stress analysis module uses wavelet transform decomposition to decompose the received signal into longitudinal waves, transverse waves, and surface waves in different frequency ranges.

[0149] Based on the propagation characteristic model of sound waves within the tower material, the construction stress analysis module analyzes the attenuation coefficient and propagation time parameters of each mode wave; typically, the tower is made of steel.

[0150] The propagation speed of the sound wave in this direction is calculated based on the parameters, and then the magnitude of the stress in this direction is deduced from the material mechanics model.

[0151] Integrate and analyze stress signals from two or more directions. The analysis process includes finding the maximum value of the difference.

[0152] The maximum value obtained from the analysis is compared with the preset safety threshold. If the stress is too high, it is determined that there is an overload problem in that part. The control room will issue visual and audible alarms and automatically stop hoisting. Hoisting will continue after the stress decreases.

[0153] The construction stress analysis module repeats the above process in real time, dynamically monitoring the stress distribution in each section of the tower body to ensure construction safety. In the above embodiment, an assist mechanism, such as a slow-speed motor, can be added in the direction of rotation of the erecting device. One end of the motor is installed at the connecting bracket position of the fixed support device 80 and connected to the top of the tower via a rope. During real-time stress detection, if the detected stress value exceeds a threshold, the assist mechanism is controlled to pull the tower, balancing the forces during the erection process.

[0154] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A method for self-erecting a tower with self-erecting safety detection function, characterized in that, include: A rotating device (50) for rotating the tower from a horizontal position to an vertical position; At least two ultrasonic generators are installed at the bottom of the tower, and ultrasonic receivers are installed at a position near the top of the tower, with the number of ultrasonic receivers being the same as the number of ultrasonic generators. The control chip is used to analyze the signals received by at least two ultrasonic receivers during the process of the tower pole being erected by the erecting device (50), compare them with the data on the relationship between signals and stress pre-stored in the big data, determine the current stress obtained by the real-time comparison, and issue a normal / alarm indication. At least two ultrasonic generators are installed at the bottom of the tower, including: The ultrasonic generator includes: a first ultrasonic generator and a second ultrasonic generator; the first ultrasonic generator is located at one corner of the bottom of the tower, and the second ultrasonic generator is located at the other corner of the bottom of the tower; the two ultrasonic generators are fixed at diagonal positions, and the ultrasonic direction is in the shape of the letter X. The ultrasonic receiver includes: a first ultrasonic receiver and a second ultrasonic receiver. The first ultrasonic receiver is located at the top of the tower, above the second ultrasonic generator; the second ultrasonic receiver is located at the top of the tower, above the first ultrasonic generator. The process of analyzing the signals received by at least two of the ultrasonic receivers includes: the control chip includes: an ultrasonic generator control module and a construction stress analysis module; include: The system employs a first ultrasonic generator, a second ultrasonic generator, a first ultrasonic receiver, a second ultrasonic receiver, and a control chip. All three ultrasonic generators are electrically connected to the control chip. The control chip integrates an ultrasonic generator control module and a construction stress analysis module. The ultrasonic generator control module controls the first and second ultrasonic generators to generate a first ultrasonic signal and a second ultrasonic signal. The construction stress analysis module analyzes the first and second received signals collected by the first and second ultrasonic receivers to obtain the tower stress during construction. When the tower stress exceeds a stress threshold, an alarm is issued to the construction personnel.

2. The self-erecting method for towers with self-erecting safety detection function according to claim 1, characterized in that, The process by which the construction stress analysis module analyzes the first and second received signals includes: First, initialize the two ultrasonic generators, aligning them diagonally towards the top of the tower. The ultrasonic generator is triggered to emit an ultrasonic signal, and the ultrasonic receiver collects the response echo signal. The construction stress analysis module uses wavelet transform decomposition to extract different modes of the response echo signal, decomposing the received signal into longitudinal waves, transverse waves and surface waves in different frequency ranges. Based on the propagation characteristics of sound waves within materials, the construction stress analysis module analyzes the attenuation coefficients and propagation time parameters of the longitudinal waves, transverse waves, and surface waves. The propagation speed of the sound wave along the diagonal direction of the tower is calculated based on the parameters of the attenuation coefficient and propagation time, and then the magnitudes of the stresses along the two diagonal directions of the tower are deduced. The difference between the two obtained stresses is compared with a preset safety threshold in the database. If the stress is too high, the control chip issues an alarm.

3. The self-erecting method for towers with self-erecting safety detection function according to claim 2, characterized in that, The pre-stored signal-stress relationship data in the big data is stored in the database using the following steps: Choose the database type, determine the data schema, and design the database table structure; The data is preprocessed; Create one or more tables in the database, which are used to store data on the relationship between stress signals and stress. Import the relational data into a table in the database.

4. The self-erecting method for towers with self-erecting safety detection function according to claim 3, characterized in that, The execution steps of the ultrasonic generator control module are as follows: S11. Initialize the parameters of the first ultrasonic generator and the second ultrasonic generator, including the transmission frequency and transmission power; S12. According to the preset transmission mode, the first ultrasonic generator is periodically triggered to transmit the first ultrasonic signal to the surface of the tower, wherein the transmission mode includes continuous wave and pulse wave; S13. Periodically trigger the second ultrasonic generator to emit the second ultrasonic signal onto the surface of the tower; S14. Monitor and adjust the status of the first ultrasonic generator and the second ultrasonic generator, and control their normal operation.

5. A method for self-erecting a tower with self-erecting safety detection function according to claim 4, characterized in that, The execution steps of the construction stress analysis module are as follows: S21. Obtain the first received signal received by the first ultrasonic receiver and the second received signal received by the second ultrasonic receiver; S22. Analyze the first received signal and the second received signal, and extract signal features, including information on signal amplitude and phase; S23. Based on the ultrasonic acoustoelastic theory and the characteristics of the first and second received signals, calculate the stress values ​​in the two diagonal directions of the tower. S24. Calculate the difference in stress, which is the stress value of the tower. S25. Compare the calculated tower stress value with the preset stress threshold; S26. If the stress value of the tower exceeds the stress threshold, it is determined that the stress borne by the tower is too large and there may be a safety hazard, and an alarm is issued to the construction personnel. S27. Repeat steps S21 to S26 periodically to monitor the stress changes of the tower in real time.

6. A method for self-erecting a tower with self-erecting safety detection function according to claim 5, characterized in that, The frequency multiple difference between the first received signal and the second received signal is greater than 10.

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