A detection method and system for the construction leveling compactness

Abstract

The present invention provides a method and system for detecting the compaction degree of construction leveling, which is applied to the field of measurement data processing. Based on the preset electromagnetic induction sensor of the roller, the present invention can detect the compaction degree during the construction process in real time, solving the problem that the traditional method relies on spot checks after the construction is completed and cannot adjust the construction parameters in time. By collecting electromagnetic parameters (such as conductivity, permittivity, permeability) and matching them with the compaction state of the construction ground, the soil compaction situation can be evaluated in real time. When it is found that the compaction is insufficient, the additional rolling times are automatically calculated, and the operation parameters of the roller are dynamically adjusted according to the compaction distribution heat map. This process not only improves the construction accuracy and efficiency, but also can avoid the situation of over-compaction or under-compaction, reducing rework and resource waste, providing real-time data feedback and automatic adjustment functions, realizing the intelligent management of the construction process, thereby greatly improving the construction quality and resource utilization rate.

Description

Technical Field

[0001] The present invention relates to the field of measurement data processing, and particularly to a method and system for detecting the compaction degree of construction leveling. Background Art

[0002] Modern compaction equipment, such as intelligent rollers, already has certain automatic adjustment functions and can execute construction tasks according to preset rolling modes.

[0003] However, most equipment still relies on the experience judgment of operators, lacks real-time detection and automatic adjustment functions, and the current compaction degree detection methods are mostly used for post-detection and cannot be linked with construction equipment for intelligent control, resulting in unstable construction quality. Summary of the Invention

[0004] The present invention aims to solve the problem that most current detection methods still rely on spot checks after construction is completed, real-time compaction degree data cannot be obtained during the construction process, and it is difficult to adjust construction parameters in a timely manner, and provides a method and system for detecting the compaction degree of construction leveling.

[0005] The present invention adopts the following technical means to solve the technical problems:

[0006] The present invention provides a method for detecting the compaction degree of construction leveling, including:

[0007] Based on the preset electromagnetic induction sensor of the roller, detect the ground clearance between the roller and the construction ground;

[0008] Judge whether the ground clearance is within a preset range;

[0009] If so, send a preset low-frequency electromagnetic signal to the surface of the construction ground through the roller, collect the induced electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyze the electromagnetic parameters of the induced electric field, where the electromagnetic parameters specifically include conductivity, permittivity, and magnetic permeability;

[0010] Judge whether the electromagnetic parameters match the final compaction state of the construction ground;

[0011] If not, calculate the additional rolling times of the roller on the construction ground according to the electromagnetic parameters, activate the preset GPS of the roller, generate a compaction distribution heat map of the construction ground through the GPS, and dynamically adjust the operation parameters of the roller based on the compaction distribution heat map, where the operation parameters specifically include rolling frequency, amplitude, and traveling speed.

[0012] Further, before the step of sending a preset low-frequency electromagnetic signal to the surface of the construction ground through the roller, it further includes:

[0013] Identify the soil type of the construction ground, where the soil type specifically includes sandy soil, clay and loam;

[0014] Determine whether the soil type matches a preset emission frequency range;

[0015] If so, collect the electromagnetic environmental noise at the construction site, dynamically adjust the emission power of the low-frequency electromagnetic signal according to the electromagnetic environmental noise, and adaptively switch the signal generation mode of the low-frequency electromagnetic signal according to the soil type, where the signal generation mode specifically includes sine wave, pulse wave and sweep signal.

[0016] Further, in the step of collecting the induced electric field corresponding to the preset depth according to the preset depth of the construction ground and analyzing the electromagnetic parameters of the induced electric field, the following is also included:

[0017] Based on the preset receiving antenna of the roller, obtain the propagation data of electromagnetic waves in the soil, where the propagation data specifically includes attenuation, reflection and phase shift parameters;

[0018] Determine whether the propagation data reaches a preset propagation threshold;

[0019] If not, identify the directional signal intensity of the propagation data in the soil depth range according to the soil depth range preset by the construction requirements, and dynamically adjust the signal frequency of the electromagnetic wave according to the directional signal intensity, where the signal frequency specifically includes low-frequency signal and high-frequency signal.

[0020] Further, in the step of generating the compaction distribution heat map of the construction ground through the GPS and dynamically adjusting the operation parameters of the roller based on the compaction distribution heat map, the following is also included:

[0021] Based on the azimuth data pre-collected by the GPS for the roller, obtain the terrain elevation information of the construction ground, where the azimuth data specifically includes the current longitude and latitude, elevation, speed, direction and rolling position;

[0022] Determine whether the terrain elevation information detects a preset slope error;

[0023] If so, divide the construction ground into grid cells of a preset size, draw the driving path of the roller according to the terrain elevation information, generate the dynamic compaction evolution map of the roller according to the driving path, and dynamically update the azimuth data through the GPS.

[0024] Further, in the step of determining whether the ground clearance is within a preset range, the following is also included:

[0025] Obtain the rolling track of the roller on the construction ground based on the gap change curve corresponding to the ground clearance;

[0026] Determine whether the rolling track affects the gap change curve;

[0027] If not, dynamically adjust the rolling pressure of the roller on the construction ground according to the foundation hardness of the construction ground, where the foundation hardness specifically includes soft foundation and hard foundation.

[0028] Furthermore, in the step of determining whether the electromagnetic parameters match the final compaction state of the construction ground, it further includes:

[0029] Identify the final compaction state of the construction ground based on the preset compaction requirements of the construction ground, where the compaction requirements specifically include soil type, moisture content, and regional compaction degree;

[0030] Determine whether the final compaction state meets the preset state;

[0031] If so, activate the preset laser distance sensor of the roller, dynamically correct the attenuation of the electromagnetic signal caused by the change of the terrain slope, adaptively reduce the signal frequency of the low-frequency electromagnetic signal, and combine the surface conductivity measurement and correct the final compaction data.

[0032] Furthermore, in the step of detecting the ground clearance between the roller and the construction ground based on the preset electromagnetic induction sensor of the roller, it further includes:

[0033] Collect the construction parameters of the roller during the construction process based on the sensors pre-integrated in the roller, where the sensors specifically include a compaction degree sensor, a contact pressure sensor, a moisture sensor, and an on-vehicle temperature sensor, and the construction parameters specifically include soil compaction degree, the contact pressure of the steel wheel on the soil, soil temperature, and soil moisture content;

[0034] Determine whether the construction parameters meet the preset compaction requirements of the construction ground;

[0035] If so, dynamically adjust the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, and adaptively compensate the measurement error of the ground clearance based on the induction signal, where the ground material specifically includes sandy soil, gravel, and clay, and the induction signal specifically includes induction signal frequency and induction signal intensity.

[0036] The present invention also provides a detection system for the construction flatness compaction degree, including:

[0037] A detection module, configured to detect the ground clearance between the roller and the construction ground based on the preset electromagnetic induction sensor of the roller;

[0038] A judgment module, configured to judge whether the ground clearance is within a preset range;

[0039] An execution module, configured to, if so, send a preset low-frequency electromagnetic signal to the surface of the construction ground through the roller, collect the induced electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyze the electromagnetic parameters of the induced electric field, where the electromagnetic parameters specifically include conductivity, permittivity, and magnetic permeability;

[0040] A second judgment module, configured to judge whether the electromagnetic parameters match the final compaction state of the construction ground;

[0041] A second execution module, configured to, if not, calculate the additional rolling times of the roller on the construction ground according to the electromagnetic parameters, activate the preset GPS of the roller, generate a compaction distribution heat map of the construction ground through the GPS, and dynamically adjust the operation parameters of the roller based on the compaction distribution heat map, where the operation parameters specifically include rolling frequency, amplitude, and traveling speed.

[0042] Further, it further includes:

[0043] An identification module, configured to identify the soil type of the construction ground, where the soil type specifically includes sandy soil, clay, and loam;

[0044] A third judgment module, configured to judge whether the soil type matches a preset transmission frequency range;

[0045] A third execution module, configured to, if so, collect the electromagnetic environment noise at the construction site, dynamically adjust the transmission power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switch the signal generation mode of the low-frequency electromagnetic signal according to the soil type, where the signal generation mode specifically includes sine wave, pulse wave, and swept-frequency signal.

[0046] Further, the execution module further includes:

[0047] An acquisition unit, configured to acquire the propagation data of electromagnetic waves in the soil based on the preset receiving antenna of the roller, where the propagation data specifically includes attenuation, reflection, and phase shift parameters;

[0048] A judgment unit, configured to judge whether the propagation data reaches a preset propagation threshold;

[0049] An execution unit, which, if the answer is no, identifies the directional signal strength of the propagation data within the soil depth range preset according to the construction requirements, and dynamically adjusts the signal frequency of the electromagnetic wave according to the directional signal strength, where the signal frequency specifically includes a low-frequency signal and a high-frequency signal.

[0050] The present invention provides a method and a system for detecting the construction flatness compaction degree, and has the following beneficial effects:

[0051] Based on the electromagnetic induction sensor preset on the roller, the present invention detects the compaction degree in real time during the construction process, solves the problem that the traditional method relies on the spot check after the construction is completed and cannot adjust the construction parameters in time, evaluates the soil compaction situation in real time by collecting electromagnetic parameters (such as conductivity, permittivity, permeability) and matching them with the compaction state of the construction ground. When it is found that the compaction is insufficient, it automatically calculates the additional number of rolling times, and dynamically adjusts the operation parameters of the roller according to the compaction distribution heat map. This process not only improves the construction accuracy and efficiency, but also avoids over-compaction or under-compaction, reduces rework and resource waste, provides real-time data feedback and automatic adjustment functions, realizes the intelligent management of the construction process, and thus greatly improves the construction quality and resource utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic flow chart of an embodiment of the method for detecting the construction flatness compaction degree of the present invention;

[0053] Figure 2 It is a structural block diagram of an embodiment of the system for detecting the construction flatness compaction degree of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0054] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The implementation, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] Refer to the attached Figure 1 , which is a method for detecting the construction flatness compaction degree in an embodiment of the present invention, and includes:

[0057] S1: Based on the electromagnetic induction sensor preset on the roller, detect the ground clearance between the roller and the construction ground;

[0058] S2: Determine whether the ground clearance is within a preset range;

[0059] S3: If so, send a preset low-frequency electromagnetic signal to the surface of the construction ground through the roller, collect the induced electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyze the electromagnetic parameters of the induced electric field, where the electromagnetic parameters specifically include conductivity, permittivity, and magnetic permeability;

[0060] S4: Determine whether the electromagnetic parameters match the final compaction state of the construction ground;

[0061] S5: If not, calculate the additional rolling times of the roller on the construction ground based on the electromagnetic parameters, activate the preset GPS of the roller, generate a compaction distribution heat map of the construction ground through the GPS, and dynamically adjust the operating parameters of the roller based on the compaction distribution heat map, where the operating parameters specifically include rolling frequency, amplitude, and traveling speed.

[0062] In this embodiment, the system detects the ground clearance between the roller and the construction ground based on the pre - installed electromagnetic induction sensor of the roller. Then, the system determines whether the ground clearance is within the pre - set range to execute corresponding steps. For example, when the system determines that the ground clearance between the roller and the construction ground is not within the pre - set range, the system will consider that due to the uneven ground surface and large local height differences in the construction area, the roller fails to contact the ground evenly, affecting the compaction effect. The system will adjust the suspension system or the compaction drum of the roller to make it better fit the ground, ensure uniform compaction, and at the same time increase the number of passes, improve the rolling frequency or amplitude to enhance the compaction effect. And according to the compaction requirements of the construction area, the system will adjust the traveling speed, vibration parameters of the roller, and even dynamically distribute the weight to optimize the compaction effect. For example, when the system determines that the ground clearance between the roller and the construction ground is within the pre - set range, the system will consider that the roller can contact the ground evenly and does not affect the compaction effect. The system will send a pre - set low - frequency electromagnetic signal to the surface of the construction ground through the roller, collect the induced electric fields corresponding to different depths according to the pre - set depth of the construction ground, and analyze the electromagnetic parameters of these induced electric fields. The electromagnetic parameters specifically include conductivity, permittivity, and magnetic permeability. Through the analysis of the low - frequency electromagnetic signal and the induced electric field data, the system can collect electromagnetic parameters such as conductivity, permittivity, and magnetic permeability at different depths, reflecting the compaction state of the construction ground from the surface to the deep layer, avoiding the problem that the traditional method may ignore the insufficient deep compaction degree only relying on surface detection. At the same time, since the system only performs detection when the ground clearance is within the preset range, it ensures the effective contact between the roller and the ground, thus avoiding the influence of measurement errors or suspension on data accuracy and ensuring more stable and reliable transmission and feedback of electromagnetic signals. And the traditional method mostly relies on sampling detection, while this method can continuously and real - time feedback during the construction process. According to the analyzed electromagnetic parameters, it dynamically adjusts construction parameters such as the number of passes, amplitude, and speed, thereby reducing unnecessary repeated compaction or insufficient compaction situations, improving the construction quality. By obtaining the compaction data in real - time, construction personnel can timely adjust the construction strategy, avoid over - construction or rework, reduce material, fuel, and equipment losses, improve the construction efficiency, and reduce the construction cost. Then, the system determines whether the electromagnetic parameters of the induced electric field match the final compaction state of the construction ground to execute corresponding steps;For example, when the system determines that the electromagnetic parameters of the induced electric field can match the final compaction state of the construction ground, the system will consider that the compaction degree of the construction ground meets the engineering specifications, the density and stability of the soil meet the expected requirements, and no additional rolling is required. The system will store the electromagnetic parameters of this area in the construction database for subsequent quality inspection and construction traceability. At the same time, it will mark the current area as the "compacted" state to ensure that the construction personnel can visually understand the overall compaction progress, avoid repeated rolling, automatically plan the driving trajectory of the roller, guide it to the area that does not meet the compaction standard, optimize the construction efficiency, and according to the situation of the current construction area, the system can reduce the vibration frequency, reduce the compaction energy consumption, or even suspend the vibration mode to save energy and reduce equipment wear. For example, when the system determines that the electromagnetic parameters of the induced electric field cannot match the final compaction state of the construction ground, the system will consider that the compaction degree of the construction ground does not meet the engineering specifications and additional rolling may be required. The system will calculate the additional rolling times of the roller on the construction ground based on different electromagnetic parameters, activate the pre-set GPS of the roller, generate a thermal map of the compaction distribution of the construction ground through this GPS, and dynamically adjust the operation parameters of the roller based on this thermal map of the compaction distribution. The operation parameters specifically include the rolling frequency, amplitude, and driving speed. By analyzing the electromagnetic parameters of the induced electric field, the system can accurately determine which areas do not meet the compaction standard without relying on traditional sampling detection methods, improving the comprehensiveness and accuracy of detection. At the same time, it calculates the additional rolling times based on the electromagnetic parameters to ensure that the rolling intensity of each area meets the specifications, avoiding over-rolling or under-rolling that may be caused by manual estimation, thereby optimizing the construction efficiency. And by generating a thermal map of the compaction distribution in real time, the system can guide the roller to perform targeted optimization on the unqualified areas and adjust the rolling frequency, amplitude, and driving speed according to the specific situation of the construction area to achieve precise construction. While traditional construction methods may require multiple round trips to roll the entire area, this method only increases rolling in necessary areas through thermal map analysis, reduces repeated operations, thereby reducing fuel consumption, equipment wear, and labor costs.

[0063] It should be noted that a preset low-frequency electromagnetic signal is sent to the surface of the construction ground by the roller, and according to the preset depth of the construction ground, the induced electric field corresponding to the preset depth is collected, and the electromagnetic parameters of the induced electric field are analyzed. The specific examples are as follows:

[0064] Suppose during the construction of a highway subgrade, the engineering requirement is that the compaction degree of the subgrade reaches 95% (standard density) to ensure the service life and stability of the road. The construction party adopts a real-time compaction degree evaluation system based on electromagnetic induction to replace the traditional sampling detection method, realizing non-contact and real-time monitoring during the compaction process, avoiding rework, and improving construction quality and efficiency.

[0065] First, the low-frequency electromagnetic signal is set.

[0066] Soil type in the construction area: gravel soil with moderate moisture content;

[0067] Target compaction: 95%;

[0068] Electromagnetic signal frequency: set to 50kHz, transmission power 5W;

[0069] Detection depth range: 5cm, 10cm, 20cm;

[0070] Then carry out real-time detection steps during the construction process.

[0071] Low-frequency electromagnetic signal transmission: The electromagnetic induction sensor on the roller is activated to uniformly send a 50kHz low-frequency electromagnetic signal to the surface; the signal enters the construction ground and attenuates and scatters as the depth increases, forming an induced electric field at different depths;

[0072] Induction electric field acquisition: Multiple sensors built into the system are arranged at the bottom of the roller to collect induced electric field data at depths of 5cm, 10cm, and 20cm, and record electromagnetic parameters, including:

[0073] Electrical conductivity (σ): reflects the water content and pore structure of the soil;

[0074] Dielectric constant (εr): indicates the compactness of the soil, a larger dielectric constant indicates a denser soil;

[0075] Magnetic permeability (μ): used to detect the influence of mineral particles or metal substances in the soil;

[0076] Afterwards, the data was analyzed and compared. The system compared the collected electric field data at different depths with the compaction target parameters required by the construction standards. The results are as follows:

[0077] ;

[0078] The system detected that the target compaction degree had been achieved at the depths of 5cm and 10cm, but the dielectric constant at the depth of 20cm was low and the conductivity was high, indicating that there were still many pores in the deep soil and the compaction degree was insufficient;

[0079] Finally, the construction plan was adjusted dynamically. The system determined that the 20cm depth did not reach the target compaction degree, and automatically triggered the construction adjustment mechanism to take the following optimization measures:

[0080] Calculate the additional number of rolling times: According to the electromagnetic data, 2 additional rolling times are required;

[0081] Adjust roller parameters:

[0082] Rolling frequency increased by 10% (increases vibration effect and promotes deep soil compaction);

[0083] Reduce the driving speed by 15% (extend the rolling time to ensure uniform force application);

[0084] Increase the amplitude by 5% (enhance the force on deep soil);

[0085] Activate the GPS to generate a real-time heat map:

[0086] The compaction status of the construction area will be visually displayed on the heat map. Uncompacted areas will be marked in red, and qualified areas will be shown in green;

[0087] Construction workers can view the compaction distribution in real time through the display screen to avoid missed compaction or over-compaction;

[0088] After the construction adjustment, conduct another test. After performing an additional 2 passes of rolling, the system re-detects the electromagnetic parameters of the induced electric field and makes a comparison; the dielectric constant at a depth of 20 cm is increased to 6.6, and the conductivity is reduced to 0.09 S / m, and the compaction degree meets the standard; the compaction heat map generated by the GPS shows that the construction area has reached a state of uniform compaction, and the construction is qualified;

[0089] In summary, in the above example process, the system monitors the compaction degree in real time, avoids sampling inspection only after the construction is completed, reduces the rework cost. At the same time, the electromagnetic induction technology avoids the damage to the ground caused by traditional sampling detection, improves the detection efficiency, and is different from the traditional method that can only detect the surface layer. This technology can evaluate the compaction conditions at different depths such as 5 cm, 10 cm, and 20 cm. The system optimizes the roller parameters according to the real-time data, improves the construction quality and consistency. Construction workers can directly view the uncompacted areas and accurately control the operation of the roller to reduce the problem of missed compaction.

[0090] It should be added that, based on the electromagnetic parameters, calculate the additional rolling times of the roller on the construction ground, activate the preset GPS of the roller, generate the compaction distribution heat map of the construction ground through the GPS, and dynamically adjust the operation parameters of the roller according to the compaction distribution heat map. The specific example is as follows:

[0091] Suppose an airport is building a runway with a length of 3,200 m and a width of 60 m. It is required that the compaction degree of the runway base layer is ≥97% to ensure the stability of aircraft takeoff and landing; the traditional sampling detection method takes 2 hours to obtain the results, which affects the construction progress. Therefore, a real-time compaction degree evaluation system based on electromagnetic induction is adopted;

[0092] The real-time monitoring discovers problems. The system sends a 40 kHz low-frequency electromagnetic signal to the ground surface and detects the compaction degree data;

[0093] Test results:

[0094] The compaction degree of the east area (500m long and 30m wide) is insufficient (93% - 94%), and it needs to be rolled one more time;

[0095] The compaction degree of the west area (700m long and 20m wide) is lower than 92%, and it needs to be rolled two more times and the rolling parameters need to be adjusted;

[0096] The GPS heat map shows that

[0097] East area: yellow (compaction degree 93% - 94%);

[0098] West area: red (compaction degree < 92%);

[0099] Subsequently, the system is optimized and adjusted. That is, for the east area (which needs one additional rolling), the rolling frequency is adjusted: 30Hz → 32Hz, and the default driving speed is maintained: 4km / h; while for the west area (which needs two additional rollings), the rolling frequency is adjusted: 30Hz → 35Hz, the driving speed is reduced: 4km / h → 2.5km / h, and the amplitude is increased: 1.2mm → 1.5mm;

[0100] After the construction adjustment, after performing two additional rollings, the system detects the electromagnetic parameters again, and the compaction degree is increased to 97% for both, meeting the construction requirements; after the construction is completed, the entire heat map turns green, indicating that the compaction degrees have all reached the standard; the construction time is shortened by 20% compared to the traditional method, and the detection cost is reduced by 30%;

[0101] In summary, in the above example process, the system improves the rolling efficiency by precisely controlling the rolling process and dynamically adjusting the operating parameters of the roller. At the same time, it calculates the number of additional rollings based on real-time data to avoid unnecessary rolling operations, and ensures that the standard compaction degree is achieved in different areas, enhancing the durability of the project. The compaction distribution heat map generated by GPS enables the construction team to intuitively understand the compaction situation, accurately control the rolling area, reduce rework and over-rolling, improve construction efficiency, and reduce fuel consumption and equipment wear.

[0102] In this embodiment, before step S3 of sending a preset low-frequency electromagnetic signal from the roller to the surface of the construction ground, it further includes:

[0103] S301: Identify the soil type of the construction ground, where the soil type specifically includes sandy soil, clay, and loam;

[0104] S302: Determine whether the soil type matches the preset transmission frequency range;

[0105] S303: If so, collect the electromagnetic ambient noise at the construction site, dynamically adjust the transmission power of the low-frequency electromagnetic signal according to the electromagnetic ambient noise, and adaptively switch the signal generation mode of the low-frequency electromagnetic signal according to the soil type, where the signal generation mode specifically includes sine wave, pulse wave, and frequency sweep signal.

[0106] In this embodiment, the system identifies the soil type of the construction ground. The soil types specifically include sandy soil, clay, and loam. Then, it determines whether these soil types match the pre-set transmission frequency range to execute corresponding steps. For example, when the system determines that the soil type of the construction ground cannot match the pre-set transmission frequency range, the system will consider that the current electromagnetic signal frequency cannot effectively penetrate or correctly reflect the electromagnetic characteristics of this soil type, which may lead to distortion of electromagnetic induction measurement data and affect the accuracy of compaction degree evaluation. The system will adjust the transmission frequency according to the electromagnetic response characteristics of different soil types to make it more suitable for the current soil. For instance, sandy soil has high permeability and low conductivity and is suitable for using electromagnetic signals with higher frequencies (50 kHz - 100 kHz) to obtain clearer induction data. Clay has high water content and large conductivity and is suitable for using electromagnetic signals with lower frequencies (10 kHz - 30 kHz) to reduce signal attenuation and increase the measurement depth. Loam is between the two and usually uses medium frequencies (30 kHz - 50 kHz) to ensure that the signal can penetrate deeply and maintain good resolution. At the same time, after adjusting the transmission frequency, the system re-sends electromagnetic signals to the construction ground to collect the induced electric fields at different depths to obtain accurate electromagnetic parameters that match the current soil type. And because the change in soil type may affect the final compaction requirements, the system will adjust the compaction calculation model according to the new electromagnetic data to optimize the additional rolling times, rolling frequency, amplitude, and driving speed. For example, when the system determines that the soil type of the construction ground can match the pre-set transmission frequency range, at this time, the system will consider that the current electromagnetic signal frequency can effectively penetrate the soil and reflect the electromagnetic characteristics. The system will collect the electromagnetic environmental noise at the construction site, dynamically adjust the transmission power of the low-frequency electromagnetic signal according to different electromagnetic environmental noises, and adaptively switch the signal generation mode of the low-frequency electromagnetic signal according to different soil types. The signal generation modes specifically include sine wave, pulse wave, and swept-frequency signal;By dynamically adjusting the transmission power of electromagnetic signals, the system can effectively overcome the interference of different electromagnetic environments at the construction site, ensure that the electromagnetic signals can effectively penetrate the soil and accurately reflect the electromagnetic characteristics of the soil. By adjusting the transmission power according to different electromagnetic environment noises, signal attenuation or interference can be avoided, and the measurement accuracy can be improved. At the same time, by adaptively switching the signal generation modes (sine wave, pulse wave, and swept-frequency signal), the system can select the most suitable signal mode for compaction measurement according to the changes in soil types and electromagnetic environment noises at the construction site. For example, the sine wave is suitable for a stable environment, can provide a smooth signal output, and is suitable for obtaining accurate data in an environment with less interference. The pulse wave is suitable for short-term and high-precision measurements, can effectively avoid interference in continuous signals, and is suitable for areas with relatively uniform soil types. The swept-frequency signal is suitable for situations where the soil type is complex or the environmental noise is strong, can provide a wide-band signal, helps to penetrate different depths and obtain multi-level information. And by adjusting the transmission power and signal mode in real time, the system can always maintain the best signal transmission quality and data acquisition ability in different construction environments. This means that even in a complex or interference-rich construction site, the system can still provide accurate real-time compaction data, facilitating the dynamic adjustment of construction parameters such as rolling frequency, speed, and driving path, and ensuring that the construction quality meets the standards. During the construction process, the interference of electromagnetic environment noise is inevitable. By adjusting the transmission power of the signal according to different electromagnetic environment noises, the system can effectively reduce the interference impact and improve the stability and reliability of the measurement. This can effectively avoid errors in the compaction evaluation caused by external signal interference, thereby improving the overall performance of the system.;

[0107] In this embodiment, in step S3 of collecting the induced electric field corresponding to the preset depth and analyzing the electromagnetic parameters of the induced electric field according to the preset depth of the construction ground, it further includes:

[0108] S31: Based on the receiving antenna preset on the roller, obtain the propagation data of electromagnetic waves in the soil, where the propagation data specifically includes attenuation, reflection, and phase shift parameters;

[0109] S32: Determine whether the propagation data reaches a preset propagation threshold;

[0110] S33: If not, according to the soil depth range preset according to the construction requirements, identify the direction signal intensity of the propagation data within the soil depth range, and dynamically adjust the signal frequency of the electromagnetic wave according to the direction signal intensity, where the signal frequency specifically includes low-frequency signals and high-frequency signals.

[0111] In this embodiment, the system acquires the propagation data of electromagnetic waves in the soil based on the receiving antenna preset on the roller. The propagation data specifically includes attenuation, reflection, and phase shift parameters. Then, the system determines whether these propagation data reach the preset propagation threshold to execute corresponding steps. For example, when the system determines that the propagation data of electromagnetic waves in the soil can reach the preset propagation threshold, the system will consider that the electromagnetic waves can effectively penetrate the soil and reflect the electromagnetic characteristics of the soil, and the quality of the propagation signal is good without being interfered by excessive attenuation or reflection. The system will continue to collect and analyze the electromagnetic data in the deep layer of the soil through the receiving antenna, so as to obtain high-precision parameters such as soil conductivity, dielectric constant, and magnetic permeability, and at the same time accurately evaluate the compaction degree of the construction ground, and then determine whether the current soil has reached the compaction requirements of the engineering specifications. If the electromagnetic parameters indicate that the soil has reached the required compaction degree, the system can confirm that the area has been compacted and proceed to the next step. Otherwise, additional rolling can be carried out. And if the compaction degree does not meet the standard, the system dynamically adjusts the operating parameters of the roller according to the collected propagation data and electromagnetic parameters, such as adjusting the rolling frequency, increasing or decreasing the rolling frequency to optimize the rolling effect, adjusting the amplitude, increasing the amplitude to increase the compaction force of the soil, or reducing the amplitude to reduce the impact on the soil, and adjusting the traveling speed to ensure more uniform and stable rolling. For example, when the system determines that the propagation data of electromagnetic waves in the soil cannot reach the preset propagation threshold, at this time, the system will consider that the electromagnetic waves cannot effectively penetrate the soil. The system will identify the direction signal intensity of the propagation data in the soil depth range according to the preset soil depth range required by the construction, and dynamically adjust the signal frequency of the electromagnetic waves according to different direction signal intensities. The signal frequency specifically includes low-frequency signals and high-frequency signals;The system dynamically adjusts the signal frequency (low frequency or high frequency) by identifying the direction signal strength within the soil depth range, thereby enhancing the penetration power of electromagnetic waves. For example, low-frequency signals can better penetrate deep soil, while high-frequency signals are more suitable for shallow soil. By adjusting the signal frequency, the system can adapt to different soil conditions, thus optimizing the penetration effect of electromagnetic waves. At the same time, since the changes in soil type and soil conditions will affect the propagation characteristics of electromagnetic waves, in areas where the soil is relatively dense or the penetration power of electromagnetic waves is poor, the system adjusts the signal frequency to improve the signal penetration. This enables the system to adaptively adjust in different construction environments, improving the accuracy of compaction degree detection. And dynamically adjusting the signal frequency can ensure that the system can effectively measure at different depth levels according to the soil depth range and direction signal strength. Low-frequency signals are suitable for deeper measurements, while high-frequency signals are applicable to shallower measurements. This dynamic adjustment mechanism can ensure that the system covers the entire soil depth range, improving the comprehensiveness and accuracy of measurements. And by adjusting the frequency of electromagnetic waves according to different direction signal strengths, the system can minimize data loss or errors caused by soil type, depth, and electromagnetic interference, thereby ensuring the quality and reliability of the collected data. In this way, the system can obtain more accurate soil electromagnetic parameters, providing strong support for subsequent compaction degree evaluation.;

[0112] In this embodiment, in step S5 of generating the compaction distribution heat map of the construction ground by the GPS and dynamically adjusting the operation parameters of the roller based on the compaction distribution heat map, it further includes:

[0113] S51: Based on the azimuth data pre-collected by the GPS for the roller, obtain the terrain elevation information of the construction ground, where the azimuth data specifically includes the current longitude and latitude, elevation, speed, direction, and rolling position;

[0114] S52: Determine whether a preset slope error is detected in the terrain elevation information;

[0115] S53: If so, divide the construction ground into grid units of a preset size, draw the driving path of the roller according to the terrain elevation information, generate the dynamic compaction evolution map of the roller based on the driving path, and dynamically update the azimuth data through the GPS.

[0116] In this embodiment, the system obtains the topographic elevation information of the construction ground based on the azimuth data pre-collected by the roller via GPS. The azimuth data specifically includes the current longitude and latitude, elevation, speed, direction, and rolling position. Then, the system determines whether the pre-set slope error is detected in this topographic elevation information to execute corresponding steps. For example, when the system determines that the pre-set slope error is not detected in the topographic elevation information of the construction ground, the system will consider that the slope of the current construction area meets the design requirements, the construction ground is relatively flat, and there is no risk of affecting the compaction effect due to abnormal slope. The system allows the roller to continue operating according to the pre-set rolling path and parameters without additional slope correction, which can ensure the stable progress of the construction process, improve construction efficiency. At the same time, by combining other parameters of the construction ground (such as soil type, compaction degree, electromagnetic parameters, etc.), the operation parameters of the roller are further optimized, such as adjusting the rolling frequency, amplitude, and traveling speed, to ensure the best compaction effect. And the current topographic elevation information, rolling trajectory, and compaction data will be uploaded to the construction monitoring platform to form real-time construction data records for subsequent construction evaluation and quality inspection. Even when the current slope error is within the allowable range, the system will still maintain dynamic monitoring of the construction terrain to prevent slope changes caused by soil settlement or equipment vibration during subsequent rolling. For example, when the system determines that the pre-set slope error is detected in the topographic elevation information of the construction ground, at this time, the system will consider that the slope of the current construction area does not meet the design requirements and there are uneven areas on the construction ground. The system will divide the construction ground into grid cells of pre-set sizes, draw the traveling path of the roller according to different topographic elevation information, and generate a dynamic compaction evolution map of the roller based on these traveling paths. The azimuth data of the roller is dynamically updated via GPS. By detecting the elevation information of the construction terrain and judging the slope error, the system can accurately identify the uneven areas of the construction ground. By dividing the construction ground based on grid cells, the system can refine the compaction requirements of different areas, avoid uneven compaction caused by local elevation changes, and improve construction quality. At the same time, based on the topographic elevation information of different grid cells, the system can dynamically adjust the traveling path of the roller to ensure that the compaction operation covers the entire construction area, optimize the traveling route, reduce unnecessary repeated rolling, improve construction efficiency, and reduce energy consumption. And through the compaction evolution map, the system can analyze the rolling state of the roller in different areas in real time, and combine with the slope error to dynamically adjust rolling parameters such as the number of rolling passes, amplitude, and rolling frequency to meet the design requirements of the construction ground, so as to ensure that the final compaction degree meets the standard. And by dynamically updating the azimuth data of the roller via GPS, the system can continuously optimize the compaction path during the construction process and real-time correct the rolling deviation caused by equipment drift or terrain changes to ensure that the roller always operates along the optimal path, improving construction accuracy and consistency.

[0117] It should be noted that the terrain elevation information refers to the altitude or relative height data of each position on the construction ground, usually obtained by devices such as GPS, Light Detection and Ranging (LiDAR), unmanned aerial vehicle mapping, total station, or ground sensors. These information are used to describe the undulation of the terrain in the construction area and to evaluate terrain features such as slopes, depressions, and highlands.

[0118] In this embodiment, in step S2 of determining whether the ground clearance is within a preset range, it further includes:

[0119] S21: Based on the clearance change curve corresponding to the ground clearance, obtain the rolling trajectory of the roller on the construction ground;

[0120] S22: Determine whether the rolling trajectory affects the clearance change curve;

[0121] S23: If not, dynamically adjust the rolling force of the roller on the construction ground according to the foundation hardness of the construction ground, where the foundation hardness specifically includes soft foundation and hard foundation.

[0122] In this embodiment, the system obtains the rolling trajectory of the roller on the construction ground based on the gap change curve corresponding to the ground clearance. Then, the system determines whether these rolling trajectories affect the gap change curve to execute corresponding steps. For example, when the system determines that the rolling trajectory of the roller on the construction ground affects the gap change curve, the system will consider that the current rolling operation has significantly affected the compaction state of the construction ground, and the ground clearance of the construction ground has changed. The system will record the gap change curve in real time, analyze the specific impact of the rolling trajectory on the ground, ensure that the rolling intensity matches the ground response, and at the same time adjust the rolling frequency and amplitude according to the degree of compaction to adapt to the current soil characteristics, prevent over-rolling or under-rolling, and appropriately adjust the driving speed, reduce the rolling frequency in the area with obvious compaction effect, and increase the vibration intensity in the area with insufficient compaction to improve the construction efficiency. For example, when the system determines that the rolling trajectory of the roller on the construction ground does not affect the gap change curve, at this time, the system will consider that the current rolling operation has not had enough effect on the compaction state of the construction ground. The system will dynamically adjust the rolling trajectory of the roller on the construction ground according to the foundation hardness of the construction ground, which specifically includes soft foundation and hard foundation. By judging whether the rolling trajectory affects the gap change curve, the system can identify whether the current rolling is effective, avoid repeated operations in the area that has reached the standard, and improve the construction efficiency. If the rolling does not produce enough effect, the system can dynamically adjust the trajectory to make the roller roll to the area that needs to be compacted more, reduce unnecessary time and fuel consumption. At the same time, for the soft foundation, the system can increase the rolling frequency or adjust the rolling mode to make the soil particles arrange more closely, improve the bearing capacity of the foundation, and prevent uneven settlement. For the hard foundation, the system can reduce the rolling frequency or adopt different vibration modes to avoid surface damage or material fragmentation caused by over-rolling, thereby extending the service life of the construction ground. And through GPS positioning and rolling trajectory analysis, the system can automatically adjust the driving route of the roller to make the rolling more uniform, avoid areas with uncompacted or over-compacted areas. This dynamic adjustment mechanism ensures that the entire construction ground meets the uniform compaction standard, improves the project quality, and reduces the subsequent maintenance cost.

[0123] In this embodiment, in step S4 of determining whether the electromagnetic parameters match the final compaction state of the construction ground, it further includes:

[0124] S41: Based on the preset compaction requirements of the construction ground, identify the final compaction state of the construction ground, where the compaction requirements specifically include soil type, moisture content, and regional compaction degree;

[0125] S42: Determine whether the final compaction state meets the preset state;

[0126] S43: If so, activate the preset laser ranging sensor of the roller, dynamically correct the attenuation of the electromagnetic signal caused by the change in terrain slope, adaptively reduce the signal frequency of the low-frequency electromagnetic signal, and combine the surface conductivity measurement and correct the final compaction data.

[0127] In this embodiment, the system identifies the final compaction state of the construction ground based on the pre-set compaction requirements for the construction ground, which specifically include soil type, moisture content, and regional compaction degree. Then, the system determines whether the final compaction state meets the pre-set state to execute corresponding steps. For example, when the system determines that the final compaction state of the construction ground does not meet the pre-set state, the system will consider that the compaction degree of the construction ground fails to meet the engineering requirements, and there may be problems of insufficient compaction or over-compaction, which affect the bearing capacity and stability of the foundation. The system will compare the soil type, moisture content, and regional compaction degree to determine whether the compaction effect is not ideal due to loose soil particle structure, too high or too low moisture content. Combining historical rolling data, it identifies whether the current construction area has reached the maximum compaction degree, avoiding unnecessary repeated rolling. At the same time, if the compaction is insufficient, the system will calculate the additional number of rolling times and optimize the rolling trajectory to make the rolling operation more uniform and ensure that the soil density meets the design requirements. If over-compaction occurs, the system will reduce the rolling vibration frequency or the number of rolling times to avoid damage to surface materials or elastic loss. And if the detected moisture content is low, the system will suggest spraying an appropriate amount of water to improve the compressibility of the soil and achieve the best compaction effect. If the moisture content is high, the system will temporarily stop construction and wait for the soil to drain naturally or use drainage equipment to accelerate the treatment to avoid the decline of construction quality caused by the "bleeding" phenomenon. For example, when the system determines that the final compaction state of the construction ground can meet the pre-set state, at this time, the system will consider that the compaction degree of the construction ground meets the engineering requirements, and the system will activate the pre-set laser distance sensor of the roller, dynamically correct the attenuation of the electromagnetic signal caused by the change of the terrain slope, adaptively reduce the signal frequency of the low-frequency electromagnetic signal, and combine the surface conductivity measurement and correct the final compaction data;The system can dynamically adjust the signal transmission mode through accurate terrain data to ensure the minimization of signal attenuation, thereby improving the accuracy of compaction data. At the same time, adaptively reducing the frequency of low-frequency electromagnetic signals can effectively reduce the errors caused by reflection or interference of electromagnetic waves in areas with large slopes. In addition, combining the measurement of surface conductivity can more accurately evaluate the compaction of the soil. The conductivity of the soil is closely related to the soil density, so accurate correction can be carried out through conductivity data to ensure that the final compaction data is highly consistent with the actual ground state. And real-time correction of electromagnetic signal and surface conductivity data not only improves the accuracy of the data, but also can dynamically adjust the working parameters of the roller, such as rolling frequency, traveling speed, etc., to ensure that the compaction degree of each area during construction meets the requirements, avoiding uneven compaction caused by terrain changes. Through this intelligent adjustment, the construction efficiency can be maximized, and the time and energy consumption of repeated rolling can be reduced. Since the system can detect and adjust the compaction state in a timely manner to ensure that each area reaches the predetermined compaction standard, reducing the quality problems caused by insufficient or excessive compaction, after the construction is completed, the stability and durability of the ground are guaranteed, thereby reducing the need for subsequent maintenance and reinforcement.;

[0128] It should be noted that activating the preset laser distance sensor of the roller, dynamically correcting the attenuation of electromagnetic signals caused by terrain slope changes, adaptively reducing the signal frequency of the low-frequency electromagnetic signal, combining surface conductivity measurement and correcting the final compaction data, the specific examples are as follows:

[0129] Suppose in a mountain highway construction project, the ground of the construction section has significant slope changes; in some areas, the slope is large (for example, between 5° and 10°), which will affect the working efficiency of the roller and the accuracy of low-frequency electromagnetic signals; this project uses the electromagnetic induction technology equipped on the roller to monitor the compaction degree of the soil in real time, but the slope change may cause attenuation of electromagnetic signals, thus affecting the measurement of the final compaction degree;

[0130] The working principle and adjustment process of the system: The laser distance sensor detects the slope change, and the laser distance sensor on the roller monitors the elevation change of the construction ground in real time; when the sensor detects that the slope of the construction ground exceeds the preset threshold (for example, 7°), the system automatically records this slope information and sends it to the control system; for example, when the roller travels to an area with a slope of 7°, the system will transmit this information to the electromagnetic induction module to prompt a possible change in the electromagnetic wave propagation path;

[0131] Dynamically correct electromagnetic signal attenuation. Electromagnetic signals may attenuate due to changes in the propagation path in areas with large slopes. For example, on a mountain road with a large slope, the propagation angle of electromagnetic waves changes, which may cause the signal strength to decrease. Suppose in an area with a slope of 7°, the system calculates that the signal attenuation is 20% (for example, a signal originally with an intensity of 0.5 attenuates to 0.4). To compensate for this attenuation, the system dynamically adjusts the gain of the receiving end or increases the transmission power of the electromagnetic wave, so that the electromagnetic signal can be restored to its original intensity.

[0132] Adaptively reduce the frequency of low-frequency electromagnetic signals. In the case of slope changes, the system automatically adjusts the frequency of the electromagnetic signal according to the detected slope and signal attenuation. For example, if a large slope causes difficulties in signal transmission, the system will adjust the frequency of the low-frequency signal from the default 80 Hz to 50 Hz to enhance the penetration ability of electromagnetic waves into the soil. This frequency adjustment can help electromagnetic signals better penetrate the construction soil, especially in areas with large slopes, to avoid excessive signal attenuation.

[0133] Combine surface conductivity measurement to correct compaction data. After slope adjustment and electromagnetic signal frequency adaptation, the system further evaluates the compaction state of the soil through a conductivity measuring instrument. Suppose the soil in this area is wet clay, and the conductivity shows that the water content of the soil is relatively high, which may cause the soil to be soft and the compaction degree to be insufficient. Based on this data, the system will correct the compaction data originally obtained from the electromagnetic signal and calculate the actual soil compaction degree. For example, the original electromagnetic induction data shows a compaction degree of 95%, but after combining conductivity and slope compensation, the system obtains a compaction degree of 92% and issues an instruction to recommend increasing the number of rolling passes.

[0134] Dynamically adjust the operating parameters of the roller. Finally, by feeding these corrected data back to the control system of the roller, the roller will dynamically adjust the rolling operation. For example, the system may recommend increasing the rolling frequency, decreasing the driving speed, or increasing the vibration amplitude to ensure that the soil reaches the expected compaction degree. For example, in an area with a large slope, the system may increase the rolling frequency of the roller from 50 Hz to 70 Hz to ensure that the soil can be evenly stressed and the compaction degree is increased.

[0135] In summary, through the system's adaptive adjustment of slope, signal attenuation, and conductivity, the roller can accurately measure and adjust the compaction operation in complex terrains. The system successfully overcomes the impact of slope changes on electromagnetic signals, updates the compaction data in real time, and optimizes the operation of the roller to ensure that the construction ground meets the designed compaction standard. This not only improves the construction efficiency but also guarantees the construction quality, avoiding under-compaction or misjudgment caused by slope problems, and enhancing the overall construction accuracy and effect of the project. The application of such a system, especially in complex terrains such as mountainous areas, can significantly improve the accuracy and real-time nature of compaction degree detection during construction, avoid errors in manual sampling inspection or after construction, and reduce the potential risks of the project.

[0136] In this embodiment, in step S1 of detecting the ground clearance between the roller and the construction ground based on the electromagnetic induction sensor preset in the roller, it further includes:

[0137] S11: Based on the sensors pre-integrated in the roller, collect the construction parameters of the roller during construction. Among them, the sensors specifically include a compaction degree sensor, a contact pressure sensor, a moisture sensor, and an on-vehicle temperature sensor, and the construction parameters specifically include soil compaction degree, the contact pressure of the steel wheel on the soil, soil temperature, and soil moisture content;

[0138] S12: Determine whether the construction parameters meet the preset compaction requirements of the construction ground;

[0139] S13: If so, dynamically adjust the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, and adaptively compensate for the measurement error of the ground clearance based on the induction signal. Among them, the ground material specifically includes sandy soil, gravel, and clay, and the induction signal specifically includes induction signal frequency and induction signal intensity.

[0140] In this embodiment, the system is based on a group of sensors pre-integrated in the roller. The sensors specifically include a compaction degree sensor, a contact pressure sensor, a moisture sensor, and a vehicle-mounted temperature sensor, which collect construction parameters during the construction process of the roller. The construction parameters specifically include soil compaction degree, the contact pressure of the steel wheel on the soil, soil temperature, and soil moisture content. Then, the system determines whether these construction parameters meet the preset compaction requirements of the construction ground to execute corresponding steps. For example, when the system determines that the construction parameters during the construction process of the roller do not meet the preset compaction requirements of the construction ground, the system will consider that the construction ground fails to reach the designed compaction degree at the current stage, and there may be problems such as insufficient compaction, over-compaction, or uneven compaction. The system will increase the rolling frequency and the number of rolling times per unit area to ensure that the soil is fully compacted. If the contact pressure is inappropriate, the settings of the roller can be adjusted to increase or decrease the contact pressure of the steel wheel to obtain the best compaction effect. Excessive traveling speed may lead to uneven compaction. The system can automatically adjust the traveling speed to ensure even compaction, and at the same time, it is recommended to adjust the construction time and select a period with a more moderate temperature for compaction operations to ensure that the soil reaches the best compaction effect. In cold weather, the system will delay the construction to avoid the negative impact of temperature on soil moisture and the compaction process, and continuously monitor the construction parameters and dynamically adjust the operation mode during the process. For example, in the case of overly wet soil, the system can help with compaction by increasing the vibration amplitude of the rolling. If the contact pressure of the steel wheel is too high, the system can adjust the pressure to avoid over-compaction and protect the soil structure. For example, when the system determines that the construction parameters during the construction process of the roller can meet the preset compaction requirements of the construction ground, at this time, the system will consider that the construction ground reaches the designed compaction degree at the current stage. The system will dynamically adjust the induction signals of the electromagnetic induction sensor according to the ground material of the construction ground. The ground material specifically includes sandy soil, gravel, and clay. The induction signals specifically include the induction signal frequency and the induction signal intensity. Based on these induction signals, the measurement error of the ground clearance is adaptively compensated. By dynamically adjusting the induction signal frequency and intensity of the electromagnetic induction sensor, the system can adaptively compensate the measurement error of the ground clearance according to different ground materials (such as sandy soil, gravel, clay). This means that regardless of how the ground material changes, the system can accurately measure the ground clearance between the roller and the construction ground, ensuring the accuracy and reliability of the measurement data. At the same time, by adjusting the induction signal and compensating the measurement error in real time, the system can more accurately monitor the compaction effect, ensure that the construction ground reaches the designed compaction degree, avoid insufficient compaction or over-compaction caused by measurement errors, and improve the overall construction quality. Moreover, different ground materials (such as sandy soil, gravel, clay) have different physical properties, which may affect the measurement accuracy. By dynamically adjusting the induction signal according to the ground material, the system can optimize the induction settings for each soil type to ensure that different materials of soil can be accurately measured and efficiently compacted.

[0141] It should be noted that, according to the ground material of the construction ground, the induction signal of the electromagnetic induction sensor is dynamically adjusted, and based on the induction signal, the measurement error of the ground clearance is adaptively compensated. The specific examples are as follows:

[0142] Suppose in a construction area, a roller is performing rolling operations; the soil materials in this area are different, including three types: sandy soil, clay, and gravel; under these soil types, the measurement results of the electromagnetic induction sensor may be affected by the soil properties, so the system needs to dynamically adjust the frequency and intensity of the induction signal;

[0143] Soil characteristics of sandy soil (low conductivity):

[0144] Sandy soil has low conductivity, so the propagation effect of electromagnetic waves in this kind of soil is weak and easy to attenuate; due to the relatively coarse and loose particles, there are fewer reflections during the transmission of electromagnetic waves; sandy soil has a poor response to low-frequency signals and is more sensitive to higher-frequency electromagnetic waves; the system will automatically increase the signal frequency of the electromagnetic induction sensor to ensure that electromagnetic waves can effectively penetrate the soil; to compensate for the low conductivity of sandy soil, the system will increase the signal intensity; the strong signal can make up for the attenuation caused by the low conductivity of sandy soil and ensure that the sensor can obtain accurate ground clearance data; by increasing the signal frequency and intensity, the electromagnetic induction sensor of the roller can effectively penetrate the sandy soil and accurately measure the ground clearance to ensure that the rolling depth during the construction process meets the design requirements;

[0145] Soil characteristics of clay (high conductivity):

[0146] Clay has high conductivity, especially under wet conditions, and the propagation of electromagnetic waves will rapidly attenuate; the particles of clay are very fine and compact, resulting in greater reflection and attenuation of electromagnetic waves during propagation in the soil; due to the strong conductivity of clay, the system will automatically reduce the frequency of the electromagnetic signal to make the signal better penetrate the clay layer; the lower frequency makes the electromagnetic waves not easily over-attenuate in the high-conductivity soil; due to the strong conductivity, the system will appropriately reduce the signal intensity to avoid too much reflection caused by too strong a signal and distort the measurement data; by adjusting the frequency and intensity, the system can ensure that the propagation of the electromagnetic signal in the clay is more stable and will not cause too much reflection or attenuation due to high conductivity, thus ensuring accurate measurement of the ground clearance;

[0147] Soil characteristics of gravel (loose and uneven):

[0148] Gravel soil has a relatively loose structure, and its conductivity varies with the particle size, density, and humidity; when electromagnetic waves propagate in such soil, they may face uneven propagation resistance; due to the relatively large soil particle size, the propagation of electromagnetic waves in gravel is easily affected by environmental changes, especially factors such as soil compaction degree and humidity; the system will automatically adjust the frequency of the electromagnetic signal according to the specific density and humidity conditions of the gravel; if the soil is relatively loose, the system may select a lower-frequency electromagnetic signal, which helps to enhance the signal penetration ability; due to the relatively unstable conductivity of gravel soil, the system may need to dynamically adjust the signal strength according to the soil moisture content; for dry gravel, the signal strength may need to be increased, while for wet gravel, the signal strength is appropriately reduced to avoid excessive signal reflection; by adjusting the frequency and strength, the system can ensure that the electromagnetic signal in the gravel soil can adapt to different soil densities and humidities, ensure accurate measurement of the ground clearance of the roller, and avoid errors caused by soil non-uniformity;

[0149] In summary, in the above example content, by dynamically adjusting the signal frequency and signal strength of the electromagnetic induction sensor, the system can optimize the propagation effect of electromagnetic waves according to the characteristics of different soil materials, thereby effectively compensating for measurement errors; specifically, the system adjusts the signal parameters according to the different physical characteristics of sand, clay, and gravel to ensure that the sensor can accurately measure the ground clearance; this not only improves the compaction accuracy of the roller under different soil conditions but also enhances the data reliability during the construction process, ultimately ensuring that the construction quality meets the engineering requirements.

[0150] Refer to Appendix Figure 2 , which is a detection system for the construction leveling and compaction degree in an embodiment of the present invention, including:

[0151] The detection module 10 is used to detect the ground clearance between the roller and the construction ground based on the preset electromagnetic induction sensor of the roller;

[0152] The judgment module 20 is used to judge whether the ground clearance is within the preset range;

[0153] The execution module 30 is used to, if so, send a preset low-frequency electromagnetic signal from the roller to the surface of the construction ground, collect the induced electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyze the electromagnetic parameters of the induced electric field, where the electromagnetic parameters specifically include conductivity, permittivity, and magnetic permeability;

[0154] The second judgment module 40 is used to judge whether the electromagnetic parameters match the final compaction state of the construction ground;

[0155] The second execution module 50 is configured to, if there is no match, calculate the additional number of roller compactions on the construction ground according to the electromagnetic parameters, activate the preset GPS of the roller, generate a compaction distribution heat map of the construction ground through the GPS, and dynamically adjust the operating parameters of the roller based on the compaction distribution heat map, where the operating parameters specifically include the compaction frequency, amplitude, and traveling speed.

[0156] In this embodiment, the detection module 10 detects the ground clearance between the roller and the construction ground based on the electromagnetic induction sensor pre - installed on the roller, and then the judgment module 20 determines whether the ground clearance is within the pre - set range to execute corresponding steps. For example, when the system determines that the ground clearance between the roller and the construction ground is not within the pre - set range, the system will consider that due to the uneven ground surface and large local height differences in the construction area, the roller fails to contact the ground evenly, affecting the compaction effect. The system will adjust the suspension system or the compaction drum of the roller to make it better fit the ground, ensure uniform compaction, and at the same time increase the number of rolling passes, improve the rolling frequency or amplitude to enhance the compaction effect. And according to the compaction requirements of the construction area, the system will adjust the driving speed, vibration parameters of the roller, and even dynamically distribute the weight to optimize the compaction effect. For example, when the system determines that the ground clearance between the roller and the construction ground is within the pre - set range, the execution module 30 will consider that the roller can contact the ground evenly without affecting the compaction effect. The system will send a pre - set low - frequency electromagnetic signal to the surface of the construction ground through the roller, and collect the induced electric fields corresponding to different depths according to the pre - set depth of the construction ground, and analyze the electromagnetic parameters of these induced electric fields. The electromagnetic parameters specifically include conductivity, permittivity, and magnetic permeability. Through the analysis of the low - frequency electromagnetic signal and the induced electric field data, the system can collect electromagnetic parameters such as conductivity, permittivity, and magnetic permeability at different depths, reflecting the compaction state of the construction ground from the surface to the deep layer, avoiding the problem that traditional methods may ignore insufficient deep compaction only relying on surface detection. At the same time, since the system only performs detection when the ground clearance is within the preset range, it ensures the effective contact between the roller and the ground, thus avoiding the influence of measurement errors or suspension on data accuracy, ensuring the transmission and feedback of electromagnetic signals are more stable and reliable. And traditional methods mostly rely on sampling detection, while this method can continuously and real - time feedback during the construction process, dynamically adjust construction parameters such as the number of rolling passes, amplitude, and speed according to the analyzed electromagnetic parameters, thereby reducing unnecessary repeated rolling or insufficient compaction, improving the construction quality. By obtaining the compaction data in real - time, construction personnel can timely adjust the construction strategy, avoid over - construction or rework, reduce material, fuel, and equipment losses, improve construction efficiency, and reduce construction costs. Then the second judgment module 40 determines whether the electromagnetic parameters of the induced electric field match the final compaction state of the construction ground to execute corresponding steps.For example, when the system determines that the electromagnetic parameters of the induced electric field can match the final compaction state of the construction ground, the system will consider that the compaction degree of the construction ground meets the engineering specifications, and the density and stability of the soil meet the expected requirements, and no additional rolling is required. The system will store the electromagnetic parameters of this area in the construction database for subsequent quality acceptance and construction traceability. At the same time, it will mark the current area as the "compacted" state to ensure that the construction personnel can visually understand the overall compaction progress, avoid repeated rolling, automatically plan the driving trajectory of the roller, guide it to the area that does not meet the compaction standard, optimize the construction efficiency, and according to the situation of the current construction area, the system can reduce the vibration frequency, reduce the compaction energy consumption, or even suspend the vibration mode to save energy and reduce equipment wear. For example, when the system determines that the electromagnetic parameters of the induced electric field cannot match the final compaction state of the construction ground, at this time, the second execution module 50 will consider that the compaction degree of the construction ground does not meet the engineering specifications and may require additional rolling. The system will calculate the additional rolling times of the roller on the construction ground according to different electromagnetic parameters, activate the pre-set GPS of the roller, generate a thermal map of the compaction distribution of the construction ground through this GPS, and based on this compaction distribution thermal map, dynamically adjust the operation parameters of the roller. The operation parameters specifically include the rolling frequency, amplitude, and driving speed. By analyzing the electromagnetic parameters of the induced electric field, the system can accurately determine which areas do not meet the compaction standard without relying on traditional sampling detection methods, improving the comprehensiveness and accuracy of detection. At the same time, it calculates the additional rolling times based on the electromagnetic parameters to ensure that the rolling intensity of each area meets the specifications, avoiding over-rolling or under-rolling that may be caused by manual estimation, thus optimizing the construction efficiency. And by generating a real-time compaction distribution thermal map, the system can guide the roller to perform targeted optimization on the non-compliant areas and adjust the rolling frequency, amplitude, and driving speed according to the specific situation of the construction area to achieve precise construction. While traditional construction methods may require multiple round trips to roll the entire area, this method only increases rolling in necessary areas through thermal map analysis, reduces repeated operations, and thus reduces fuel consumption, equipment wear, and labor costs.

[0157] In this embodiment, it further includes:

[0158] An identification module for identifying the soil type of the construction ground, where the soil type specifically includes sandy soil, clay, and loam;

[0159] A third judgment module for judging whether the soil type matches a preset emission frequency range;

[0160] A third execution module for, if so, collecting the electromagnetic environmental noise at the construction site, dynamically adjusting the emission power of the low-frequency electromagnetic signal according to the electromagnetic environmental noise, and adaptively switching the signal generation mode of the low-frequency electromagnetic signal according to the soil type, where the signal generation mode specifically includes sine wave, pulse wave, and sweep signal.

[0161] In this embodiment, the system identifies the soil type of the construction ground. The soil types specifically include sandy soil, clay, and loam. Then, it determines whether these soil types match the pre-set emission frequency range to perform corresponding steps. For example, when the system determines that the soil type of the construction ground cannot match the pre-set emission frequency range, the system will consider that the frequency of the current electromagnetic signal cannot effectively penetrate or correctly reflect the electromagnetic characteristics of this soil type, which may lead to distortion of electromagnetic induction measurement data and affect the accuracy of compaction degree evaluation. The system will adjust the emission frequency according to the electromagnetic response characteristics of different soil types to make it more suitable for the current soil. For example, sandy soil has high permeability and low conductivity and is suitable for using electromagnetic signals with higher frequencies (50 kHz to 100 kHz) to obtain clearer induction data. Clay has high water content and large conductivity and is suitable for using electromagnetic signals with lower frequencies (10 kHz to 30 kHz) to reduce signal attenuation and increase the measurement depth. Loam is between the two and usually uses medium frequencies (30 kHz to 50 kHz) to ensure that the signal can penetrate deeply and maintain good resolution. At the same time, after adjusting the emission frequency, the system re-sends electromagnetic signals to the construction ground and collects the induced electric fields at different depths to obtain accurate electromagnetic parameters that match the current soil type. And because the change of soil type may affect the final compaction requirements, the system will adjust the compaction calculation model according to the new electromagnetic data to optimize the additional rolling times, rolling frequency, amplitude, and driving speed. For example, when the system determines that the soil type of the construction ground can match the pre-set emission frequency range, at this time, the system will consider that the frequency of the current electromagnetic signal can effectively penetrate the soil and reflect the electromagnetic characteristics. The system will collect the electromagnetic environmental noise at the construction site, dynamically adjust the emission power of the low-frequency electromagnetic signal according to different electromagnetic environmental noises, and adaptively switch the signal generation mode of the low-frequency electromagnetic signal according to different soil types. The signal generation modes specifically include sine wave, pulse wave, and swept-frequency signal;By dynamically adjusting the transmission power of electromagnetic signals, the system can effectively overcome the interference of different electromagnetic environments at the construction site, ensure that the electromagnetic signals can effectively penetrate the soil and accurately reflect the electromagnetic characteristics of the soil. By adjusting the transmission power according to different electromagnetic environment noises, signal attenuation or interference can be avoided, and the measurement accuracy can be improved. At the same time, by adaptively switching the signal generation modes (sine wave, pulse wave, and swept-frequency signal), the system can select the most suitable signal mode for compaction measurement according to the changes in soil types and electromagnetic environment noises at the construction site. For example, the sine wave is suitable for a stable environment, can provide a smooth signal output, and is suitable for obtaining accurate data in an environment with less interference. The pulse wave is suitable for short-term and high-precision measurements, can effectively avoid interference in continuous signals, and is suitable for areas with relatively uniform soil types. The swept-frequency signal is suitable for situations where soil types are complex or environmental noises are strong, can provide a wide-band signal, helps to penetrate different depths and obtain multi-level information. And by real-time adjusting the transmission power and signal mode, the system can always maintain the best signal transmission quality and data acquisition ability in different construction environments. This means that even at a complex or interference-prone construction site, the system can still provide accurate real-time compaction data, facilitating the dynamic adjustment of construction parameters such as rolling frequency, speed, and driving path, ensuring that the construction quality meets the standards. During the construction process, the interference of electromagnetic environment noises is inevitable. By adjusting the transmission power of the signal according to different electromagnetic environment noises, the system can effectively reduce the interference impact, improve the stability and reliability of the measurement. This can effectively avoid errors in compaction assessment caused by external signal interference, thereby improving the overall performance of the system.;

[0162] In this embodiment, the execution module further includes:

[0163] An acquisition unit, configured to acquire the propagation data of electromagnetic waves in the soil based on the receiving antenna preset in the roller, where the propagation data specifically includes attenuation, reflection, and phase shift parameters;

[0164] A judgment unit, configured to judge whether the propagation data reaches a preset propagation threshold;

[0165] An execution unit, configured to, if not, identify the direction signal intensity of the propagation data within the soil depth range preset according to the construction requirements, and dynamically adjust the signal frequency of the electromagnetic wave according to the direction signal intensity, where the signal frequency specifically includes low-frequency signals and high-frequency signals.

[0166] In this embodiment, the system acquires the propagation data of electromagnetic waves in the soil based on a preset receiving antenna of the roller. The propagation data specifically includes attenuation, reflection, and phase shift parameters. Then, the system determines whether these propagation data reach a preset propagation threshold to perform corresponding steps. For example, when the system determines that the propagation data of electromagnetic waves in the soil can reach the preset propagation threshold, the system will consider that the electromagnetic waves can effectively penetrate the soil and reflect the electromagnetic characteristics of the soil, and the quality of the propagation signal is good, without being interfered by excessive attenuation or reflection. The system will continue to collect and analyze the electromagnetic data of the deep soil through the receiving antenna, thereby obtaining high-precision parameters such as soil conductivity, dielectric constant, and magnetic permeability, and at the same time accurately evaluating the compaction degree of the construction ground, and then determining whether the current soil has reached the compaction requirements of the engineering specifications. If the electromagnetic parameters indicate that the soil has reached the required compaction degree, the system can confirm that the area has been compacted and proceed to the next step. Otherwise, additional rolling can be carried out. And if the compaction degree does not meet the standard, the system dynamically adjusts the operating parameters of the roller according to the collected propagation data and electromagnetic parameters, such as adjusting the rolling frequency, increasing or decreasing the rolling frequency to optimize the rolling effect, adjusting the amplitude, increasing the amplitude to increase the compaction force of the soil, or reducing the amplitude to reduce the impact on the soil, and adjusting the traveling speed to ensure more uniform and stable rolling. For example, when the system determines that the propagation data of electromagnetic waves in the soil cannot reach the preset propagation threshold, at this time, the system will consider that the electromagnetic waves cannot effectively penetrate the soil. The system will identify the direction signal intensity of the propagation data within the preset soil depth range according to the construction requirements, and dynamically adjust the signal frequency of the electromagnetic waves according to different direction signal intensities. The signal frequency specifically includes low-frequency signals and high-frequency signals;The system dynamically adjusts the signal frequency (low frequency or high frequency) by identifying the direction signal intensity within the soil depth range, thereby enhancing the penetration power of electromagnetic waves. For example, low-frequency signals can better penetrate deep soil, while high-frequency signals are more suitable for shallow soil. By adjusting the signal frequency, the system can adapt to different soil conditions, thus optimizing the penetration effect of electromagnetic waves. At the same time, due to the changes in soil type and soil conditions affecting the propagation characteristics of electromagnetic waves, in areas where the soil is relatively dense or the penetration power of electromagnetic waves is poor, the system adjusts the signal frequency to improve the signal penetration. This enables the system to adaptively adjust in different construction environments, improving the accuracy of compaction degree detection. And dynamically adjusting the signal frequency can ensure that the system can effectively measure at different depth levels according to the soil depth range and direction signal intensity. Low-frequency signals are suitable for deeper measurements, while high-frequency signals are applicable to shallower measurements. This dynamic adjustment mechanism can ensure that the system covers the entire soil depth range, improving the comprehensiveness and accuracy of the measurement. By adjusting the frequency of electromagnetic waves according to different direction signal intensities, the system can minimize data loss or errors caused by soil type, depth, and electromagnetic interference, thereby ensuring the quality and reliability of the collected data. In this way, the system can obtain more accurate soil electromagnetic parameters, providing strong support for subsequent compaction degree evaluation.;

[0167] In this embodiment, the second execution module further includes:

[0168] An acquisition unit, configured to obtain the terrain elevation information of the construction ground based on the azimuth data pre-acquired by the roller through the GPS, where the azimuth data specifically includes the current longitude and latitude, elevation, speed, direction, and rolling position;

[0169] A second judgment unit, configured to judge whether a preset slope error is detected in the terrain elevation information;

[0170] A second execution unit, configured to, if so, divide the construction ground into grid units of a preset size, draw the driving path of the roller according to the terrain elevation information, generate a dynamic compaction evolution map of the roller based on the driving path, and dynamically update the azimuth data through the GPS.

[0171] In this embodiment, the system obtains the topographic elevation information of the construction ground based on the azimuth data pre-collected by the roller compactor using GPS. The azimuth data specifically includes the current longitude and latitude, elevation, speed, direction, and rolling position. Then, the system determines whether these topographic elevation information detect a preset slope error to execute corresponding steps. For example, when the system determines that the topographic elevation information of the construction ground does not detect a preset slope error, the system will consider that the slope of the current construction area meets the design requirements, the construction ground is relatively flat, and there is no risk of affecting the compaction effect due to abnormal slope. The system allows the roller compactor to continue operating according to the preset rolling path and parameters without additional slope correction, which can ensure the stable progress of the construction process, improve construction efficiency, and at the same time, combined with other parameters of the construction ground (such as soil type, compaction degree, electromagnetic parameters, etc.), further optimize the operating parameters of the roller compactor, such as adjusting the rolling frequency, amplitude, and traveling speed, to ensure the best compaction effect, and will upload the current topographic elevation information, rolling trajectory, and compaction data to the construction monitoring platform to form real-time construction data records for subsequent construction evaluation and quality inspection. Even when the current slope error is within the allowable range, the system will still maintain dynamic monitoring of the construction terrain to prevent slope changes caused by soil settlement or equipment vibration during subsequent rolling. For example, when the system determines that the topographic elevation information of the construction ground detects a preset slope error, at this time, the system will consider that the slope of the current construction area does not meet the design requirements and there are uneven areas on the construction ground. The system will divide the construction ground into grid units of a preset size, draw the traveling path of the roller compactor according to different topographic elevation information, and generate a dynamic compaction evolution map of the roller compactor based on these traveling paths. The azimuth data of the roller compactor is dynamically updated through GPS. By detecting the elevation information of the construction terrain and judging the slope error, the system can accurately identify the uneven areas of the construction ground, divide the construction ground based on grid units, enabling the system to refine the compaction requirements for different areas, avoid uneven compaction caused by local elevation changes, improve construction quality, and at the same time, based on the topographic elevation information of different grid units, the system can dynamically adjust the traveling path of the roller compactor to ensure that the compaction operation covers the entire construction area, optimize the traveling route, reduce unnecessary repeated rolling, improve construction efficiency, and reduce energy consumption. And through the compaction evolution map, the system can analyze the rolling state of the roller compactor in different areas in real time, combined with the slope error, dynamically adjust the rolling parameters, such as the number of rolling passes, amplitude, rolling frequency, etc., to meet the design requirements of the construction ground, so as to ensure that the final compaction degree reaches the standard. And by dynamically updating the azimuth data of the roller compactor through GPS, the system can continuously optimize the compaction path during the construction process and real-time correct the rolling deviation caused by equipment drift or terrain change, ensuring that the roller compactor always operates according to the optimal path, improving construction accuracy and consistency.

[0172] In this embodiment, the judgment module further includes:

[0173] A second acquisition unit, configured to acquire the rolling track of the roller on the construction ground based on the gap change curve corresponding to the ground clearance.

[0174] A third judgment unit, configured to judge whether the rolling track affects the gap change curve.

[0175] A third execution unit, configured to, if the judgment result is negative, dynamically adjust the rolling pressure of the roller on the construction ground according to the foundation hardness of the construction ground, where the foundation hardness specifically includes soft foundation and hard foundation.

[0176] In this embodiment, the system acquires the rolling track of the roller on the construction ground based on the gap change curve corresponding to the ground clearance, and then the system judges whether these rolling tracks affect the gap change curve to execute corresponding steps. For example, when the system determines that the rolling track of the roller on the construction ground affects the gap change curve, the system will consider that the current rolling operation has significantly affected the compaction state of the construction ground, and the ground clearance of the construction ground has changed. The system will record the gap change curve in real time, analyze the specific impact of the rolling track on the ground, ensure that the rolling intensity matches the ground response, and at the same time adjust the rolling frequency and amplitude according to the compaction degree to adapt to the current soil characteristics, prevent over-rolling or under-rolling, and appropriately adjust the driving speed, reduce the rolling frequency in the area with obvious compaction effect, and increase the vibration intensity in the area with insufficient compaction to improve the construction efficiency. For example, when the system determines that the rolling track of the roller on the construction ground does not affect the gap change curve, the system will consider that the current rolling operation has not had enough impact on the compaction state of the construction ground. The system will dynamically adjust the rolling track of the roller on the construction ground according to the foundation hardness of the construction ground, where the foundation hardness specifically includes soft foundation and hard foundation. By judging whether the rolling track affects the gap change curve, the system can identify whether the current rolling is effective, avoid repeated operations in the already qualified area, and improve the construction efficiency. If the rolling does not have enough effect, the system can dynamically adjust the track to make the roller roll to the area that needs to be compacted more, reduce unnecessary time and fuel consumption. At the same time, for the soft foundation, the system can increase the rolling frequency or adjust the rolling mode to make the soil particles arrange more closely, improve the bearing capacity of the foundation, and prevent uneven settlement. For the hard foundation, the system can reduce the rolling frequency or adopt different vibration modes to avoid surface damage or material fragmentation caused by over-rolling, thereby extending the service life of the construction ground. And through GPS positioning and rolling track analysis, the system can automatically adjust the driving route of the roller to make the rolling more uniform, avoid uncompacted or over-compacted areas. This dynamic adjustment mechanism ensures that the entire construction ground meets the uniform compaction standard, improves the project quality, and reduces the subsequent maintenance cost.

[0177] In this embodiment, the second judgment module further includes:

[0178] An identification unit, configured to identify the final compaction state of the construction ground based on the preset compaction requirements of the construction ground, where the compaction requirements specifically include soil type, moisture content, and regional compaction degree;

[0179] A fourth judgment unit, configured to judge whether the final compaction state meets the preset state;

[0180] A fourth execution unit, configured to, if so, activate the preset laser distance sensor of the roller, dynamically correct the attenuation of the electromagnetic signal caused by the change of the terrain slope, adaptively reduce the signal frequency of the low-frequency electromagnetic signal, and measure and correct the final compaction data in combination with the surface conductivity.

[0181] In this embodiment, the system identifies the final compaction state of the construction ground based on the pre-set compaction requirements of the construction ground, and the compaction requirements specifically include soil type, moisture content, and regional compaction degree. Then, the system determines whether the final compaction state meets the pre-set state to execute corresponding steps. For example, when the system determines that the final compaction state of the construction ground cannot meet the pre-set state, the system will consider that the compaction degree of the construction ground fails to meet the engineering requirements, and there may be problems of insufficient compaction or over-compaction, which will affect the bearing capacity and stability of the foundation. The system will compare the soil type, moisture content, and regional compaction degree to determine whether the compaction effect is not ideal due to loose soil particle structure, too high or too low moisture content. Combining historical rolling data, it will identify whether the current construction area has reached the maximum compaction degree, avoiding unnecessary repeated rolling. At the same time, if the compaction is insufficient, the system will calculate the additional number of rolling times and optimize the rolling trajectory to make the rolling operation more uniform and ensure that the soil density meets the design requirements. If over-compaction occurs, the system will reduce the rolling vibration frequency or the number of rolling times to avoid damage to surface materials or elastic loss. And if the detected moisture content is low, the system will recommend spraying an appropriate amount of water to improve the compressibility of the soil and achieve the best compaction effect. If the moisture content is high, the system will temporarily stop construction and wait for the soil to drain naturally or use drainage equipment to accelerate the treatment to avoid the decline of construction quality caused by the "floating slurry" phenomenon. For example, when the system determines that the final compaction state of the construction ground can meet the pre-set state, at this time, the system will consider that the compaction degree of the construction ground has reached the engineering requirements. The system will activate the pre-set laser distance sensor of the roller, dynamically correct the attenuation of the electromagnetic signal caused by the change of the terrain slope, adaptively reduce the signal frequency of the low-frequency electromagnetic signal, and combine the surface conductivity measurement to correct the final compaction data;The system can dynamically adjust the signal transmission mode through accurate terrain data to ensure the minimization of signal attenuation, thereby improving the accuracy of compaction data. At the same time, adaptively reducing the frequency of low-frequency electromagnetic signals can effectively reduce the errors caused by reflection or interference of electromagnetic waves in areas with large slopes. In addition, by combining the measurement of surface conductivity, the compaction condition of the soil can be more accurately evaluated. The conductivity of the soil is closely related to the soil density, so accurate correction can be carried out through conductivity data to ensure that the final compaction data is highly consistent with the actual ground state. Moreover, real-time correction of electromagnetic signal and surface conductivity data not only improves the accuracy of the data, but also can dynamically adjust the working parameters of the roller, such as rolling frequency, traveling speed, etc., to ensure that the compaction degree of each area during construction meets the requirements, avoiding uneven compaction caused by terrain changes. Through this intelligent adjustment, the construction efficiency can be maximized, and the time and energy consumption of repeated rolling can be reduced. Since the system can detect and adjust the compaction state in a timely manner to ensure that each area reaches the predetermined compaction standard, reducing the quality problems caused by insufficient compaction or over-compaction, the stability and durability of the ground are guaranteed after construction, thereby reducing the need for later maintenance and reinforcement.

[0182] In this embodiment, the detection module further includes:

[0183] An acquisition unit for acquiring the construction parameters of the roller during construction based on the sensors pre-integrated in the roller. Among them, the sensors specifically include a compaction degree sensor, a contact pressure sensor, a moisture sensor, and a vehicle-mounted temperature sensor, and the construction parameters specifically include soil compaction degree, the contact pressure of the steel wheel on the soil, soil temperature, and soil moisture content;

[0184] A fifth judgment unit for judging whether the construction parameters meet the preset compaction requirements of the construction ground;

[0185] A fifth execution unit for, if so, dynamically adjusting the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, and adaptively compensating the measurement error of the ground clearance according to the induction signal. Among them, the ground material specifically includes sandy soil, gravel, and clay, and the induction signal specifically includes induction signal frequency and induction signal intensity.

[0186] In this embodiment, the system is based on a group of sensors pre-integrated in the roller. The sensors specifically include a compaction degree sensor, a contact pressure sensor, a moisture sensor, and a vehicle-mounted temperature sensor, which collect construction parameters during the construction process of the roller. The construction parameters specifically include soil compaction degree, the contact pressure of the steel wheel on the soil, soil temperature, and soil moisture content. Then, the system determines whether these construction parameters meet the preset compaction requirements of the construction ground to execute corresponding steps. For example, when the system determines that the construction parameters during the construction process of the roller do not meet the preset compaction requirements of the construction ground, the system will consider that the construction ground fails to reach the designed compaction degree at the current stage, and there may be problems such as insufficient compaction, over-compaction, or uneven compaction. The system will increase the rolling frequency and the number of rolling times per unit area to ensure that the soil is fully compacted. If the contact pressure is inappropriate, the settings of the roller can be adjusted to increase or decrease the contact pressure of the steel wheel to obtain the best compaction effect. Excessive driving speed may lead to uneven compaction. The system can automatically adjust the driving speed to ensure uniform compaction, and at the same time, it is recommended to adjust the construction time and select a period with a more moderate temperature for compaction operations to ensure that the soil reaches the best compaction effect. In cold weather, the system will delay the construction to avoid the negative impact of temperature on soil moisture and the compaction process, and continuously monitor the construction parameters and dynamically adjust the operation mode during the process. For example, in the case of overly wet soil, the system can help with compaction by increasing the vibration amplitude of the rolling. If the contact pressure of the steel wheel is too high, the system can adjust the pressure to avoid over-compaction and protect the soil structure. For example, when the system determines that the construction parameters during the construction process of the roller can meet the preset compaction requirements of the construction ground, the system will consider that the construction ground reaches the designed compaction degree at the current stage. The system will dynamically adjust the induction signals of the electromagnetic induction sensor according to the ground material of the construction ground. The ground material specifically includes sandy soil, gravel, and clay. The induction signals specifically include the induction signal frequency and the induction signal intensity. Based on these induction signals, the measurement error of the ground clearance is adaptively compensated. By dynamically adjusting the induction signal frequency and intensity of the electromagnetic induction sensor, the system can adaptively compensate for the measurement error of the ground clearance according to different ground materials (such as sandy soil, gravel, clay). This means that regardless of how the ground material changes, the system can accurately measure the ground clearance between the roller and the construction ground, ensuring the accuracy and reliability of the measurement data. At the same time, by adjusting the induction signal and compensating for the measurement error in real time, the system can more accurately monitor the compaction effect, ensure that the construction ground reaches the designed compaction degree, avoid insufficient compaction or over-compaction caused by measurement errors, and improve the overall construction quality. Moreover, different ground materials (such as sandy soil, gravel, clay) have different physical properties, which may affect the measurement accuracy. By dynamically adjusting the induction signal according to the ground material, the system can optimize the induction settings for each soil type to ensure that different materials of soil can be accurately measured and efficiently compacted.

[0187] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting construction leveling and compaction, characterized in that: The following steps are involved: Based on the electromagnetic induction sensor preset on the roller, the ground clearance between the roller and the construction ground is detected; Determining whether the ground clearance is within a preset range; If yes, a preset low-frequency electromagnetic signal is sent to the surface of the construction ground by the roller, and according to the preset depth of the construction ground, an induced electric field corresponding to the preset depth is collected, and electromagnetic parameters of the induced electric field are analyzed, wherein the electromagnetic parameters specifically include electrical conductivity, dielectric constant and magnetic permeability; Determining whether the electromagnetic parameters match the final compaction state of the construction ground; If they do not match, the additional number of times the roller rolls the construction ground is calculated based on the electromagnetic parameters, a preset GPS of the roller is activated, a compaction distribution heat map of the construction ground is generated by the GPS, and the operating parameters of the roller are dynamically adjusted based on the compaction distribution heat map, wherein the operating parameters specifically include rolling frequency, amplitude and travel speed; Wherein, before the step of sending a preset low-frequency electromagnetic signal to the surface of the construction ground by the road roller, it also includes: Identifying the soil type of the construction ground, wherein the soil type specifically includes sandy soil, clay and loam; Determining whether the soil type matches a preset transmission frequency range; If yes, then collect the electromagnetic environment noise of the construction site, dynamically adjust the transmission power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switch the signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically includes a sine wave, a pulse wave and a swept frequency signal; Wherein, the step of collecting the induced electric field corresponding to the preset depth according to the preset depth of the construction ground and analyzing the electromagnetic parameters of the induced electric field further includes: Based on a preset receiving antenna of the road roller, acquiring propagation data of electromagnetic waves in the soil, wherein the propagation data specifically includes attenuation, reflection and phase shift parameters; Determining whether the propagation data reaches a preset propagation threshold; If not, then based on the soil depth range preset by the construction requirements, identify the directional signal strength of the propagation data within the soil depth range, and dynamically adjust the signal frequency of the electromagnetic wave based on the directional signal strength, wherein the signal frequency specifically includes a low-frequency signal and a high-frequency signal.

2. The method for detecting construction leveling and compaction according to claim 1, characterized in that: The step of generating a compaction distribution thermodynamic map of the construction ground through the GPS and dynamically adjusting the operating parameters of the roller based on the compaction distribution thermodynamic map further includes: Based on the position data pre-collected by the GPS for the roller, the terrain elevation information of the construction ground is obtained, wherein the position data specifically includes the current longitude and latitude, elevation, speed, direction and rolling position; Determining whether the terrain elevation information detects a preset slope error; If so, the construction ground is divided into grid units of a preset size, and the driving path of the roller is drawn according to the terrain elevation information. Based on the driving path, a dynamic compaction evolution diagram of the roller is generated, and the orientation data is dynamically updated through the GPS.

3. The method for detecting construction leveling and compaction according to claim 1, characterized in that: The step of determining whether the ground clearance is within a preset range further includes: Based on the gap variation curve corresponding to the ground clearance, obtaining a rolling track of the roller on the construction ground; Determining whether the rolling trajectory affects the gap variation curve; If not, the rolling force of the roller on the construction ground is dynamically adjusted according to the foundation hardness of the construction ground, wherein the foundation hardness specifically includes soft foundation and hard foundation.

4. The method for detecting construction leveling and compaction according to claim 1, characterized in that: The step of judging whether the electromagnetic parameters match the final compaction state of the construction ground further includes: Based on the preset compaction requirements of the construction ground, identifying the final compaction state of the construction ground, wherein the compaction requirements specifically include soil type, moisture content and regional compaction degree; Determining whether the final compaction state meets the preset state; If so, the preset laser ranging sensor of the roller is activated to dynamically correct the electromagnetic signal attenuation caused by the change of terrain slope, adaptively reduce the signal frequency of the low-frequency electromagnetic signal, and combine the surface conductivity measurement and correct the final compaction data.

5. The method for detecting construction leveling and compaction according to claim 1, characterized in that: The step of detecting the ground clearance between the roller and the construction ground based on the electromagnetic induction sensor preset on the roller further includes: Based on the pre-integrated sensors of the roller, the construction parameters of the roller during the construction process are collected, wherein the sensors specifically include a compaction sensor, a contact pressure sensor, a moisture sensor and an on-board temperature sensor, and the construction parameters specifically include soil compaction, contact pressure of the steel wheel on the soil, soil temperature and soil moisture content; Determining whether the construction parameters meet the preset compaction requirements of the construction ground; If so, the induction signal of the electromagnetic induction sensor is dynamically adjusted according to the ground material of the construction ground, and the measurement error of the ground clearance is adaptively compensated based on the induction signal, wherein the ground material specifically includes sand, gravel and clay, and the induction signal specifically includes an induction signal frequency and an induction signal strength.

6. A construction leveling and compaction detection system, characterized in that: include: A detection module, used for detecting the ground clearance between the roller and the construction ground based on an electromagnetic induction sensor preset on the roller; A judging module, used to judge whether the ground clearance is within a preset range; an execution module, for, if yes, sending a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller, collecting an induced electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyzing electromagnetic parameters of the induced electric field, wherein the electromagnetic parameters specifically include conductivity, dielectric constant and magnetic permeability; A second judgment module is used to judge whether the electromagnetic parameters match the final compaction state of the construction ground; A second execution module is used for, if there is no match, calculating the additional number of times the roller rolls the construction ground according to the electromagnetic parameters, activating a preset GPS of the roller, generating a compaction distribution heat map of the construction ground through the GPS, and dynamically adjusting the operating parameters of the roller based on the compaction distribution heat map, wherein the operating parameters specifically include rolling frequency, amplitude and travel speed; Among them, it also includes: An identification module, used to identify the soil type of the construction ground, wherein the soil type specifically includes sandy soil, clay and loam; A third judgment module is used to judge whether the soil type matches a preset transmission frequency range; A third execution module is used for collecting the electromagnetic environment noise of the construction site, dynamically adjusting the transmission power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching the signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically includes a sine wave, a pulse wave and a swept frequency signal; Wherein, the execution module also includes: An acquisition unit, configured to acquire propagation data of electromagnetic waves in the soil based on a preset receiving antenna of the road roller, wherein the propagation data specifically includes attenuation, reflection and phase shift parameters; A judging unit, used to judge whether the propagation data reaches a preset propagation threshold; The execution unit is used to, if not, identify the directional signal strength of the propagation data within the soil depth range preset according to the construction requirements, and dynamically adjust the signal frequency of the electromagnetic wave according to the directional signal strength, wherein the signal frequency specifically includes a low-frequency signal and a high-frequency signal.

Images