Construction flatness compaction degree detection method and system

Abstract

The invention provides a method and a system for detecting construction flatness and compactness, which are applied to the field of measurement data processing. The compaction degree in the construction process is detected in real time on the basis of the preset electromagnetic induction sensor of the road roller, the problem that construction parameters cannot be adjusted in time by relying on sampling inspection after construction is completed in a traditional method is solved, electromagnetic parameters (such as electrical conductivity, dielectric constant and magnetic conductivity) are collected and matched with the compaction state of the construction ground, and the construction quality is improved. According to the method, the soil compaction condition is evaluated in real time, when insufficient compaction is found, the additional rolling times are automatically calculated, and the operation parameters of the road roller are dynamically adjusted according to the compaction distribution thermodynamic diagram, so that the construction precision and efficiency are improved, the condition of excessive compaction or insufficient compaction can be avoided, rework and resource waste are reduced, and the construction efficiency is improved. And real-time data feedback and automatic adjustment functions are provided, and intelligent management of the construction process is realized, so that the construction quality and the resource utilization rate are greatly improved.

Description

Technical Field

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

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

[0003] However, most equipment still relies on the operator's experience and judgment, lacks real-time detection and automatic adjustment functions, and the current compaction 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 random inspections after the construction is completed, real-time compaction data cannot be obtained during the construction process, and it is difficult to adjust construction parameters in time, and provide a method and system for detecting construction flatness and compaction.

[0005] The present invention adopts the following technical means to solve the technical problem: The present invention provides a method for detecting construction leveling and compaction degree, comprising: 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 there is no match, the additional number of times the roller rolls the construction ground is calculated based on the electromagnetic parameters, the preset GPS of the roller is activated, a compaction distribution heat map of the construction ground is generated through 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 driving speed.

[0006] Furthermore, before the step of sending a preset low-frequency electromagnetic signal to the surface of the construction ground by the road roller, the step further 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 so, the electromagnetic environment noise of the construction site is collected, and the transmission power of the low-frequency electromagnetic signal is dynamically adjusted according to the electromagnetic environment noise. According to the soil type, the signal generation mode of the low-frequency electromagnetic signal is adaptively switched, wherein the signal generation mode specifically includes a sine wave, a pulse wave and a swept frequency signal.

[0007] Furthermore, the step of collecting the induced electric field corresponding 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 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.

[0008] Furthermore, 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.

[0009] Furthermore, 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.

[0010] Furthermore, the step of determining 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.

[0011] Furthermore, the step of detecting the ground clearance between the roller and the construction ground based on the electromagnetic induction sensor preset by 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.

[0012] The present invention also provides a construction leveling and compaction detection system, comprising: 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; The second execution module is used to calculate the additional number of times the roller rolls the construction ground based on the electromagnetic parameters if there is a mismatch, activate the GPS preset by 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, wherein the operating parameters specifically include rolling frequency, amplitude and driving speed.

[0013] Furthermore, 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; The third execution module is used to 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.

[0014] Furthermore, 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.

[0015] The present invention provides a method and system for detecting construction leveling and compaction, which has the following beneficial effects: The present invention detects the compaction degree in the construction process in real time based on the preset electromagnetic induction sensor of the roller, which solves the problem that the traditional method relies on random inspection after the construction is completed and cannot adjust the construction parameters in time. By collecting electromagnetic parameters (such as conductivity, dielectric constant, magnetic permeability) and matching them with the compaction state of the construction ground, the soil compaction condition is evaluated in real time. When insufficient compaction is found, the additional rolling times are automatically calculated, and the operating 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 avoids over-compaction or under-compaction, reduces rework and resource waste, provides real-time data feedback and automatic adjustment functions, realizes intelligent management of the construction process, and thus greatly improves construction quality and resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a flow chart of an embodiment of a method for detecting construction leveling and compaction degree of the present invention; Figure 2 The present invention is a structural block diagram of an embodiment of a system for detecting construction leveling and compaction degree of the present invention. DETAILED DESCRIPTION

[0017] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The implementation of the objectives, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1 , is a method for detecting construction leveling and compaction degree in one embodiment of the present invention, comprising: S1: Detecting the ground clearance between the roller and the construction ground based on an electromagnetic induction sensor preset on the roller; S2: Determine whether the ground clearance is within a preset range; S3: 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; S4: Determine whether the electromagnetic parameters match the final compaction state of the construction ground; S5: If there is no match, then the additional number of times the roller compacts the construction ground is calculated based on the electromagnetic parameters, the preset GPS of the roller is activated, a compaction distribution heat map of the construction ground is generated through the GPS, and based on the compaction distribution heat map, the operating parameters of the roller are dynamically adjusted, wherein the operating parameters specifically include compaction frequency, amplitude and travel speed.

[0020] In this embodiment, the system 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 system determines whether the ground clearance is within a 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 believe that due to the uneven ground and the large local height difference in the construction area, the roller fails to contact the ground evenly, affecting the compaction effect. The system will adjust the suspension system or compaction drum of the roller to make it fit the ground better to ensure uniform rolling. Increase the number of rolling times, increase the rolling frequency or amplitude, enhance the compaction effect, and adjust the roller's travel speed, vibration parameters, and even dynamically distribute weight to optimize the compaction effect according to the compaction needs of the construction area; for example, when the system determines that the ground clearance between the roller and the construction ground is within a preset range, the system will assume that the roller can evenly contact the ground without affecting the compaction effect. The system will send a preset 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 preset depth of the construction ground, and analyze the electric fields of these induced electric fields. Magnetic parameters, electromagnetic parameters specifically include conductivity, dielectric constant and magnetic permeability; the system can collect electromagnetic parameters such as conductivity, dielectric constant and magnetic permeability at different depths through the analysis of low-frequency electromagnetic signals and induced electric field data, reflecting the compaction status of the construction ground from the surface to the deep layer, avoiding the problem that the traditional method only relies on surface detection and may ignore the problem of insufficient compaction in the deep layer. At the same time, since the system only detects when the ground clearance is within the preset range, it ensures the effective contact between the roller and the ground, thereby avoiding the impact of measurement errors or suspension on data accuracy, and ensuring that the transmission and feedback of electromagnetic signals are more stable and reliable. Reliable, and traditional methods mostly rely on sampling detection, while this method can provide continuous real-time feedback during the construction process, and dynamically adjust construction parameters such as the number of rolling times, amplitude, and speed according to the analyzed electromagnetic parameters, thereby reducing unnecessary repeated rolling or insufficient compaction and improving construction quality. By obtaining compaction data in real time, construction personnel can adjust construction strategies in a timely manner to avoid excessive construction or rework, reduce material, fuel and equipment losses, improve construction efficiency, and reduce construction costs; the system then determines whether the electromagnetic parameters of the induced electric field match the final compaction state of the construction ground to execute the 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 the area in the construction database for subsequent quality acceptance and construction traceability, and mark the current area as "compacted" to ensure that construction personnel can visualize the overall compaction progress and avoid repeated rolling. The system automatically plans the driving trajectory of the roller and guides it to areas that do not meet the compaction standards to optimize construction efficiency. According to the current situation of the construction area, the system can reduce the vibration frequency, reduce compaction energy consumption, and even suspend the vibration mode to save energy and reduce equipment loss. 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 may require additional rolling. The system will calculate the additional number of rollings of the construction ground by the roller based on different electromagnetic parameters and activate the compaction. The road machine is pre-equipped with GPS, which generates a compaction distribution heat map of the construction ground. Based on the compaction distribution heat map, the operating parameters of the road roller are dynamically adjusted, including rolling frequency, amplitude and driving speed. The system can accurately determine which areas do not meet the compaction standards by analyzing the electromagnetic parameters of the induced electric field, without relying on traditional sampling detection methods, thereby improving the comprehensiveness and accuracy of the detection. At the same time, the system calculates the additional rolling times based on the electromagnetic parameters to ensure that the rolling intensity of each area meets the specifications, avoiding excessive or insufficient rolling that may be caused by manual estimation, thereby optimizing construction efficiency. In addition, by generating a compaction distribution heat map in real time, the system can guide the road roller to perform directional optimization for areas that do not meet the standards, and adjust the rolling frequency, amplitude and driving speed according to the specific conditions of the construction area to achieve precise construction. The traditional construction method may require multiple round trips to roll the entire area, while this method increases rolling only in necessary areas through thermal map analysis, reduces repeated operations, and thus reduces fuel consumption, equipment wear and labor costs. ;

[0021] It should be noted that a preset low-frequency electromagnetic signal is sent to the surface of the construction ground by the roller, and the induced electric field corresponding to the preset depth is collected according to the preset depth of the construction ground, and the electromagnetic parameters of the induced electric field are analyzed. The specific examples are as follows: Assume that during the construction of a highway subgrade, the project requires the subgrade compaction to reach 95% (standard density) to ensure the service life and stability of the road. The construction party uses a real-time compaction evaluation system based on electromagnetic induction to replace the traditional sampling detection method, achieving non-contact, real-time monitoring during the compaction process, avoiding rework, and improving construction quality and efficiency. First, set the low-frequency electromagnetic signal. Soil type in the construction area: gravel soil with moderate moisture content; Target compaction: 95%; Electromagnetic signal frequency: set to 50kHz, transmission power 5W; Detection depth range: 5cm, 10cm, 20cm; Then carry out real-time detection steps during the construction process. 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; 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: Electrical conductivity (σ): reflects the water content and pore structure of the soil; Dielectric constant (εr): indicates the compactness of the soil, a larger dielectric constant indicates a denser soil; Magnetic permeability (μ): used to detect the influence of mineral particles or metal substances in the soil; 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: ; 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; Finally, the construction plan was dynamically adjusted. 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: Calculate the additional number of rolling times: According to the electromagnetic data, 2 additional rolling times are required; Adjust roller parameters: Rolling frequency increased by 10% (increases vibration effect and promotes deep soil compaction); Reduce the driving speed by 15% (extend the rolling time to ensure uniform force); Amplitude increased by 5% (increased force on deep soil); Activate GPS and generate real-time heat map: The compaction status of the construction area will be displayed intuitively on the heat map, the uncompacted area will be marked in red, and the qualified area will be displayed in green; Construction workers can view the compaction distribution in real time through the display screen to avoid under-compaction or over-compaction; After the construction adjustment, the system retested the electromagnetic parameters of the induced electric field and compared them after two additional rolling operations. The dielectric constant at a depth of 20 cm increased to 6.6, and the conductivity decreased to 0.09 S / m, indicating that the compaction degree met the standard. The compaction heat map generated by GPS showed that the construction area had reached a uniform compaction state, indicating that the construction was qualified. To sum up, in the above example process, the system monitors the compaction degree in real time to avoid random inspections after the construction is completed, thereby reducing rework costs. At the same time, electromagnetic induction technology avoids the damage to the ground caused by traditional sampling and detection, improves detection efficiency, and is different from traditional methods that can only detect the surface. This technology can evaluate the compaction conditions at different depths such as 5cm, 10cm, and 20cm. The system optimizes the roller parameters based on real-time data to improve construction quality and consistency. Construction personnel can directly view uncompacted areas, accurately control the operation of the roller, and reduce leakage problems.

[0022] It should be supplemented that, based on the electromagnetic parameters, the additional number of times the roller rolls the construction ground is calculated, the preset GPS of the roller is activated, and a compaction distribution heat map of the construction ground is generated by the GPS. Based on the compaction distribution heat map, the operating parameters of the roller are dynamically adjusted. The specific examples are as follows: Assume that an airport is building a runway 3,200m long and 60m wide. The compaction degree of the runway base layer is required to be ≥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 evaluation system based on electromagnetic induction is used. Real-time monitoring detected the problem, and the system sent a 40kHz low-frequency electromagnetic signal to the surface and detected compaction data; Test results: The east area (500m long, 30m wide) has insufficient compaction (93%-94%) and needs an additional rolling; The compaction degree of the western area (700m long and 20m wide) is less than 92%, requiring two additional rollings and adjustment of rolling parameters; GPS heat map shows that East area: yellow (compaction degree 93%~94%); West area: red (compaction degree <92%); The system then made optimization adjustments, i.e., in the east area (needing one additional rolling), the rolling frequency was adjusted from 30Hz to 32Hz, and the default driving speed was maintained at 4km / h; while in the west area (needing two additional rollings), the rolling frequency was adjusted from 30Hz to 35Hz, the driving speed was reduced from 4km / h to 2.5km / h, and the amplitude was increased from 1.2mm to 1.5mm; After the construction adjustment, after two additional rolling operations, the system tested the electromagnetic parameters again, and the compaction degree was increased to 97%, meeting the construction requirements. After the construction was completed, the thermal map turned green as a whole, indicating that the compaction degree had reached the standard. The construction time was shortened by 20% compared with the traditional method, and the detection cost was reduced by 30%. To summarize, in the above example, the system accurately controls the rolling process, dynamically adjusts the roller operating parameters, improves the rolling efficiency, and calculates the additional rolling times based on real-time data to avoid unnecessary rolling operations, and ensures that different areas reach the standard compaction degree to enhance 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 excessive rolling, improve construction efficiency, and reduce fuel consumption and equipment wear.

[0023] In this embodiment, before step S3 of sending a preset low-frequency electromagnetic signal to the surface of the construction ground by the road roller, the method further includes: S301: Identify the soil type of the construction ground, wherein the soil type specifically includes sandy soil, clay and loam; S302: Determine whether the soil type matches a preset transmission frequency range; S303: If yes, 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.

[0024] In this embodiment, the system identifies the soil type of the construction ground, which specifically includes sandy soil, clay and loam, and then determines whether these soil types match the preset transmission frequency range to execute the corresponding steps; for example, when the system determines that the soil type of the construction ground cannot match the preset transmission frequency range, the system will consider that the frequency of the current electromagnetic signal cannot effectively penetrate or correctly reflect the electromagnetic characteristics of the soil type, which may cause distortion of the electromagnetic induction measurement data and affect the accuracy of the compaction 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 example, sandy soil has higher permeability and lower conductivity, and is suitable for using higher frequency (50kHz~100kHz) electromagnetic signals to obtain clearer sensing data. Clay has high water content and high conductivity, and is suitable for using lower frequency (10kHz~30kHz) electromagnetic signals to reduce signal attenuation and increase measurement depth. Loam is between the two. During the transmission, medium frequency (30kHz~50kHz) is usually used 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 induced electric fields at different depths to obtain accurate electromagnetic parameters that meet the current soil type. Since 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 transmission frequency range, the system will believe 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 of 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 mode specifically includes sine wave, pulse wave and sweep signal.The system can effectively overcome the interference of different electromagnetic environments at the construction site by dynamically adjusting the transmission power of the electromagnetic signal, ensuring that the electromagnetic signal 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, it can avoid signal attenuation or interference and improve measurement accuracy. At the same time, by adaptively switching the signal generation mode (sine wave, pulse wave and swept frequency signal), the system can select the most appropriate signal mode for compaction measurement according to the soil type at the construction site and the changes in electromagnetic environment noise. For example, the sine wave is suitable for a stable environment and can provide a smooth signal output. It is suitable for obtaining accurate data in an environment with less interference. The pulse wave is suitable for short-term, high-precision measurement, can effectively avoid interference in continuous signals, and is suitable for areas with relatively uniform soil types. The swept frequency signal is suitable for soil In the case of complex soil types or strong environmental noise, it can provide wide-band signals, which helps to penetrate different depths and obtain multi-level information. By adjusting the transmission power and signal mode in real time, the system can always maintain the best signal transmission quality and data acquisition capabilities in different construction environments. This means that even in complex or interference-prone construction sites, the system can still provide accurate real-time compaction data, which is convenient for dynamic adjustment of construction parameters such as rolling frequency, speed and driving path to ensure that the construction quality meets the standards. During the construction process, the interference of electromagnetic environmental noise is inevitable. By adjusting the transmission power of the signal according to different electromagnetic environmental noise, the system can effectively reduce the interference effect and improve the stability and reliability of the measurement. This can effectively avoid the interference of external signals on the compaction evaluation and cause errors, thereby improving the performance of the overall system. ;

[0025] In this embodiment, according to the preset depth of the construction ground, the step S3 of collecting the induced electric field corresponding to the preset depth and analyzing the electromagnetic parameters of the induced electric field further includes: S31: 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; S32: Determine whether the propagation data reaches a preset propagation threshold; S33: If not, then according to 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.

[0026] In this embodiment, the system obtains the propagation data of electromagnetic waves in the soil based on the receiving antenna preset by 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 the 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 believe that the electromagnetic waves can effectively penetrate the soil and reflect the electromagnetic properties 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 layer through the receiving antenna, so as to obtain high-precision parameters such as soil conductivity, dielectric constant and magnetic permeability, and accurately evaluate the compaction degree of the construction ground, and then determine whether the current soil has met the compaction requirements of the engineering specifications. If the electromagnetic parameters indicate that the soil has reached the required compaction degree, the system Then it can be confirmed that the area has been compacted and the next step can be carried out. Otherwise, additional rolling can be carried out. If the compaction degree does not meet the standard, the system will dynamically adjust the operating parameters of the roller based on 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 strength of the soil, or reducing the amplitude to reduce the impact on the soil, and adjusting the driving speed to ensure more uniform and stable rolling. For example, when the system determines that the propagation data of the electromagnetic wave in the soil cannot reach the preset propagation threshold, the system will believe that the electromagnetic wave cannot effectively penetrate the soil. The system will identify the directional signal strength of the propagation data in the soil depth range according to the soil depth range pre-set by the construction requirements, and dynamically adjust the signal frequency of the electromagnetic wave according to different directional signal strengths. The signal frequency specifically includes low-frequency signals and high-frequency signals.The system identifies the directional signal strength within the soil depth range and dynamically adjusts the signal frequency (low frequency or high frequency) to enhance the penetration 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, thereby optimizing the penetration effect of electromagnetic waves. At the same time, since changes in soil type and soil conditions will affect the propagation characteristics of electromagnetic waves, in areas with denser soil or poorer electromagnetic wave penetration, the system improves signal penetration by adjusting the signal frequency. This enables the system to adaptively adjust in different construction environments, improve the accuracy of compaction detection, and Dynamically adjusting the signal frequency can ensure that the system can effectively measure at different depths according to the soil depth range and directional signal strength. Low-frequency signals are suitable for deeper measurements, while high-frequency signals are suitable for shallower measurements. This dynamic adjustment mechanism can ensure that the system covers the entire soil depth range and improves the comprehensiveness and accuracy of the measurement. By adjusting the frequency of electromagnetic waves according to the signal strength in different directions, 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 and provide strong support for subsequent compaction evaluation. ;

[0027] In this embodiment, the step S5 of generating a compaction distribution thermodynamic map of the construction ground by the GPS and dynamically adjusting the operating parameters of the roller based on the compaction distribution thermodynamic map further includes: S51: acquiring terrain elevation information of the construction ground based on the position data pre-collected by the GPS for the road roller, wherein the position data specifically includes current latitude and longitude, elevation, speed, direction and rolling position; S52: Determine whether the terrain elevation information detects a preset slope error; S53: If yes, 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.

[0028] In this embodiment, the system obtains the terrain elevation information of the construction ground based on the position data pre-collected by the GPS for the roller, which specifically includes the current longitude and latitude, elevation, speed, direction and rolling position, and then the system determines whether these terrain elevation information detects a preset slope error to execute the corresponding steps; for example, when the system determines that the terrain 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 will allow the roller to continue operating according to the preset rolling path and parameters without additional slope correction, which can ensure the construction site is within the specified range. The construction process is carried out stably to improve construction efficiency. At the same time, combined with other parameters of the construction ground (such as soil type, compaction degree, electromagnetic parameters, etc.), the operating parameters of the roller are further optimized, such as adjusting the rolling frequency, amplitude and driving speed to ensure the best compaction effect. The current terrain elevation information, rolling trajectory and compaction data will be uploaded to the construction monitoring platform to form a real-time construction data record for subsequent construction evaluation and quality inspection. Even if the current slope error is within the allowable range, the system will still maintain dynamic monitoring of the construction terrain to prevent slope changes due to soil settlement or equipment vibration during the subsequent rolling process; for example, when the system determines that the terrain elevation information of the construction ground detects a preset slope error At this time, the system will think that the slope of the current construction area does not meet the design requirements, and there are bumps on the construction ground. The system will divide the construction ground into grid units of pre-set sizes, and draw the driving path of the roller according to different terrain elevation information. Based on these driving paths, a dynamic compaction evolution diagram of the roller is generated, and the roller's position data is dynamically updated through GPS; the system can accurately identify the bumpy areas of the construction ground by detecting the elevation information of the construction terrain and judging the slope error. The construction ground is divided based on grid units, so that the system can refine the compaction requirements of different areas, avoid uneven compaction due to local elevation changes, and improve construction quality. At the same time, based on the terrain elevation information of different grid units, the system It can dynamically adjust the driving path of the roller to ensure that the compaction operation covers the entire construction area, optimize the driving route, reduce unnecessary repeated rolling, improve construction efficiency, and reduce energy consumption. Through the compaction evolution diagram, the system can analyze the rolling status of the roller in different areas in real time, and dynamically adjust the rolling parameters, such as the number of rolling times, amplitude, rolling frequency, etc., combined with the slope error, to meet the design requirements of the construction ground, thereby ensuring that the final compaction degree meets the standard. By dynamically updating the roller's position data through GPS, the system can continuously optimize the compaction path during the construction process, and correct the rolling deviation caused by equipment drift or terrain changes in real time, ensuring that the roller always operates along the optimal path, improving construction accuracy and consistency.

[0029] It should be noted that terrain elevation information refers to the altitude or relative height data of each location on the construction ground, which is usually obtained by equipment such as GPS, LiDAR, drone mapping, total station or ground sensors. This information is used to describe the terrain conditions of the construction area and to evaluate terrain features such as slopes, depressions and highlands.

[0030] In this embodiment, the step S2 of determining whether the ground clearance is within a preset range further includes: S21: acquiring a rolling track of the construction ground by the roller based on a gap variation curve corresponding to the ground clearance; S22: determining whether the rolling track affects the gap variation curve; S23: If not, dynamically adjusting the rolling force of the roller on the construction ground according to the foundation hardness of the construction ground, wherein the foundation hardness specifically includes a soft foundation and a hard foundation.

[0031] 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, and then the system determines whether these rolling trajectories affect the gap change curve to execute the corresponding steps; for example, when the system determines that the rolling trajectory of the roller on the construction ground will affect the gap change curve, the system will consider that the current rolling operation has produced a significant effect on 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 reaction, and adjust the rolling frequency and amplitude according to the compaction degree to adapt to the current soil characteristics to prevent excessive or insufficient rolling, and appropriately adjust the driving speed, reduce the rolling frequency in areas with obvious compaction effects, and increase the vibration intensity in areas with insufficient compaction to improve construction efficiency; for example, when the system determines that the rolling trajectory of the roller on the construction ground will not affect the gap change curve, the system will consider that the current rolling operation has failed to produce sufficient effect on the compaction state of the construction ground, and the system will perform the following operations according to the gap change curve. The foundation hardness of the construction ground, which specifically includes soft foundation and hard foundation, dynamically adjusts the rolling trajectory of the roller on the construction ground; the system can identify whether the current rolling is effective by judging whether the rolling trajectory affects the gap change curve, avoid repeated operations in the area that has reached the standard, and improve construction efficiency. If the rolling does not produce enough effect, the system can dynamically adjust the trajectory so that the roller rolls to the area that needs compaction more, reducing unnecessary time and fuel consumption. At the same time, for soft foundations, the system can increase the rolling frequency or adjust the rolling mode to make the soil particles more closely arranged, improve the bearing capacity of the foundation, and prevent uneven settlement. For hard foundations, the system can reduce the rolling frequency or use different vibration modes to avoid excessive rolling causing surface damage or material breakage, thereby extending the service life of the construction ground. In addition, through GPS positioning and rolling trajectory analysis, the system can automatically adjust the roller's driving route to make the rolling more uniform and avoid uncompacted or over-compacted areas. This dynamic adjustment mechanism ensures that the entire construction ground meets the uniform compaction standard, improves project quality, and reduces subsequent maintenance costs.

[0032] In this embodiment, the step S4 of judging whether the electromagnetic parameters match the final compaction state of the construction ground further includes: S41: 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; S42: Determine whether the final compaction state meets the preset state; S43: If yes, activate the preset laser ranging sensor of the roller, 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.

[0033] 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, which specifically include soil type, moisture content and regional compaction degree, and then the system determines whether the final compaction state meets the pre-set state to execute the 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 or excessive 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 unsatisfactory due to loose soil particle structure, too high or too low moisture content, and combine historical rolling data to identify whether the current construction area has reached the maximum compaction degree to avoid unnecessary repeated rolling. At the same time, if the compaction is insufficient, the system will calculate the additional rolling times and optimize the rolling. The system can adjust the compaction 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 reduce the number of rolling times to avoid damage to the surface material or loss of elasticity. If the moisture content is detected to be 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 the construction and wait for the soil to drain naturally or use drainage equipment to accelerate the treatment to avoid the "floating slurry" phenomenon that leads to a decline in construction quality. For example, when the system determines that the final compaction state of the construction ground meets the preset state, the system will consider that the compaction degree of the construction ground has met the engineering requirements. The system will activate the laser ranging sensor pre-set by the roller, dynamically correct the electromagnetic signal attenuation 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.The system uses accurate terrain data to dynamically adjust the signal transmission method to minimize 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 places with large slopes. In addition, combined with the measurement of surface conductivity, the compaction of the soil can be more accurately evaluated. The conductivity of the soil is closely related to the soil density, so it can be accurately corrected through the conductivity data to ensure that the final compaction data is highly consistent with the actual ground state, and the electromagnetic signal and surface conductivity data are corrected in real time, which not only improves The accuracy of the data can also dynamically adjust the working parameters of the roller, such as rolling frequency and driving speed, to ensure that the compaction degree of each area during the construction process meets the requirements and avoid 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 status in time to ensure that each area meets the predetermined compaction standard, the quality problems caused by insufficient or excessive compaction are reduced. Therefore, after the construction is completed, the stability and durability of the ground are guaranteed, thereby reducing the need for later maintenance and reinforcement. ;

[0034] It should be noted that the preset laser ranging sensor of the roller is activated, the electromagnetic signal attenuation caused by the change of terrain slope is dynamically corrected, the signal frequency of the low-frequency electromagnetic signal is adaptively reduced, and the final compaction data is corrected in combination with the surface conductivity measurement. The specific examples are as follows: Assume that 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 the low-frequency electromagnetic signal. The project uses electromagnetic induction technology equipped with the roller to monitor the compaction of the soil in real time, but the slope change may cause the electromagnetic signal to attenuate, which in turn affects the final compaction measurement. System working principle and adjustment process: The laser ranging sensor detects the slope change. The laser ranging 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 the slope information and sends it to the control system. For example, when the roller drives to an area with a slope of 7°, the system will transmit the information to the electromagnetic induction module to indicate the possible change in the electromagnetic wave propagation path. Dynamic correction of electromagnetic signal attenuation. Electromagnetic signals may attenuate in areas with steep slopes due to changes in the propagation path. For example, on a steep mountain road, the angle of electromagnetic wave propagation changes, which may reduce the signal strength. Assuming that in an area with a slope of 7°, the system calculates that the signal attenuation is 20% (for example, the original signal strength of 0.5 is attenuated 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 strength. Adaptively reduce the frequency of low-frequency electromagnetic signals. When the slope changes, the system automatically and adaptively adjusts the frequency of electromagnetic signals according to the detected slope and signal attenuation. For example, if the slope is too steep and signal transmission is difficult, the system will adjust the frequency of low-frequency signals from the default 80Hz to 50Hz to enhance the penetration of electromagnetic waves into the soil. This frequency adjustment can help electromagnetic signals better penetrate the construction soil, especially in areas with steep slopes, to avoid excessive signal attenuation. Combined with the surface conductivity measurement, the compaction data is corrected. After the slope is adjusted and the electromagnetic signal frequency is adapted, the system further evaluates the compaction state of the soil through the conductivity measuring instrument. Assuming that the soil in the area is moist clay, the conductivity shows that the soil has a high water content, which may cause the soil to be loose and insufficiently compacted. Based on this data, the system will correct the compaction data originally obtained based on the electromagnetic signal and calculate the actual soil compaction. For example, the original electromagnetic induction data shows a compaction of 95%, but after combining conductivity and slope compensation, the system derives a compaction of 92% and issues a command to recommend increasing the number of rolling times. Dynamically adjust roller operating parameters. Ultimately, by feeding back these corrected data to the roller control system, the roller will dynamically adjust the rolling operation; for example, the system may recommend increasing the rolling frequency, reducing the driving speed, or increasing the vibration amplitude to ensure that the soil reaches the expected compaction degree; for example, the system may increase the roller's rolling frequency from 50Hz to 70Hz in areas with larger slopes to ensure that the soil can be evenly stressed and increase compaction degree; To summarize, the above examples show that through the system's adaptive adjustment of slope, signal attenuation, and conductivity, the roller can accurately measure and adjust the rolling operation in complex terrain; the system successfully overcomes the impact of slope changes on electromagnetic signals, updates compaction data in real time, and optimizes the operation of the roller to ensure that the construction ground meets the designed compaction standards; this not only improves construction efficiency, but also ensures construction quality, avoids insufficient compaction or misjudgment due to slope problems, and improves the overall construction accuracy and effect of the project; the application of this system, especially in complex terrains such as mountainous areas, can significantly improve the accuracy and real-time nature of compaction detection during construction, avoids errors in manual sampling or after construction, and reduces potential risks of the project.

[0035] In this embodiment, the step S1 of detecting the ground clearance between the roller and the construction ground based on the electromagnetic induction sensor preset by the roller further includes: S11: 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; S12: Determine whether the construction parameters meet the preset compaction requirements of the construction ground; S13: If yes, 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, 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.

[0036] In this embodiment, the system is based on a sensor group pre-integrated in the roller. The sensors specifically include a compaction sensor, a contact pressure sensor, a moisture sensor and an on-board temperature sensor. The sensors collect the construction parameters of the roller during the construction process. The construction parameters specifically include soil compaction, the contact pressure of the steel wheel on the soil, the soil temperature and the soil moisture content. The system then determines whether these construction parameters meet the preset compaction requirements of the construction ground to execute the corresponding steps. For example, when the system determines that the construction parameters of the roller during the construction process do not meet the preset compaction requirements of the construction ground, the system will believe that the construction ground has failed to achieve the compaction required by the design at the current stage, and there may be problems such as insufficient compaction, excessive compaction or uneven compaction. The system will increase the compaction rate. Frequency, increase the number of rolling times per unit area to ensure that the soil is fully compacted. If the contact pressure is not appropriate, 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. Driving too fast may cause uneven compaction. The system can automatically adjust the driving speed to ensure uniform compaction. At the same time, it is recommended to adjust the construction time and choose a period with a more moderate temperature for compaction operations to ensure that the soil achieves the best compaction effect. In cold weather, the system will delay construction to avoid the negative impact of temperature on soil moisture and the compaction process, and continuously monitor construction parameters and dynamically adjust the operation method during the process. For example, if the soil is too wet, the system can help compaction by increasing the vibration amplitude of rolling. If 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 of the roller during the construction process can meet the preset compaction requirements of the construction ground, the system will consider that the construction ground has reached the design compaction degree at the current stage. The system will dynamically adjust the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, which specifically includes sand, gravel and clay. The induction signal specifically includes the induction signal frequency and the induction signal strength. Based on these induction signals, the system adaptively compensates for the measurement error of the ground clearance. The system can adaptively compensate for the ground clearance according to different ground materials (such as sand, gravel and clay) by dynamically adjusting the induction signal frequency and strength of the electromagnetic induction sensor. The measurement error of ground clearance means that no matter 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 sensing signal and compensating for the measurement error in real time, the system can more accurately monitor the compaction effect to ensure that the construction ground reaches the compaction degree required by the design, avoiding insufficient or excessive compaction due to measurement errors, and improving the overall construction quality. Different ground materials (such as sand, gravel, and clay) have different physical properties, which may affect the accuracy of the measurement. By dynamically adjusting the sensing signal according to the ground material, the system can optimize the sensing settings for each soil type to ensure that soils of different materials can be accurately measured and efficiently compacted.

[0037] 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 the measurement error of the ground clearance is adaptively compensated according to the induction signal. The specific examples are as follows: Suppose a road roller is performing rolling operations in a construction area. The soil in this area has different materials, including sand, 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. Sandy (low conductivity) soil characteristics: Sand has low conductivity, so electromagnetic waves have a weak propagation effect in this type of soil and are easily attenuated; due to coarse and loose particles, there are fewer reflections during the transmission of electromagnetic waves; sand responds poorly to low-frequency signals, but is more sensitive to higher-frequency electromagnetic waves; the system will automatically increase the signal frequency of the electromagnetic induction sensor to ensure that the electromagnetic waves can effectively penetrate the soil; in order to compensate for the low conductivity of sand, the system will increase the signal strength; strong signals can make up for the attenuation caused by the low conductivity of sand, ensuring that the sensor can obtain accurate ground clearance data; by increasing the signal frequency and strength, the roller's electromagnetic induction sensor can effectively penetrate the sand, accurately measure the ground clearance, and ensure that the rolling depth during construction meets the design requirements; Clay (highly conductive) soil properties: Clay has high conductivity, especially under wet conditions, electromagnetic wave propagation will decay rapidly; clay particles are very small and compact, resulting in greater reflection and attenuation of electromagnetic waves propagating in the soil; due to clay's strong conductivity, the system will automatically reduce the frequency of the electromagnetic signal so that the signal can better penetrate the clay layer; the lower frequency makes it less likely for electromagnetic waves to attenuate excessively in highly conductive soil; due to its strong conductivity, the system will appropriately reduce the signal strength to avoid excessive reflections caused by excessive signals, which will distort the measurement data; by adjusting the frequency and strength, the system can ensure that the electromagnetic signal propagates more stably in the clay, and will not cause excessive reflections or attenuation due to high conductivity, thereby ensuring accurate measurement of ground clearance; Gravel (loose and uneven) soil characteristics: Gravel soil has a relatively loose structure, and its conductivity varies with the size, density and humidity of the particles. Electromagnetic waves may face uneven propagation resistance when propagating in such soil. Due to the large soil particle size, the propagation of electromagnetic waves in gravel is easily affected by environmental changes, especially factors such as soil compaction 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 loose, the system may choose a lower frequency electromagnetic signal, which will help enhance the signal's penetration ability. Since the conductivity of gravel soil is relatively unstable, the system may need to dynamically adjust the signal strength according to the wetness of the soil. For dry gravel, the signal strength may need to be increased, while for wet gravel, the signal strength should be 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 humidity, ensure accurate measurement of the roller's ground clearance, and avoid errors caused by soil unevenness. To summarize, in the above examples, 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 properties 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.

[0038] Reference Figure 2 , is a system for detecting construction leveling and compaction in one embodiment of the present invention, comprising: The detection module 10 is used to detect the ground clearance between the roller and the construction ground based on the electromagnetic induction sensor preset on the roller; A judging module 20, configured to judge whether the ground clearance is within a preset range; The execution module 30 is used for, if yes, sending a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller, 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, wherein the electromagnetic parameters specifically include conductivity, dielectric constant and magnetic permeability; A second judgment module 40 is used to judge whether the electromagnetic parameters match the final compaction state of the construction ground; The second execution module 50 is used to calculate the additional number of times the roller rolls the construction ground based on the electromagnetic parameters if there is a mismatch, activate the GPS preset by 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, wherein the operating parameters specifically include rolling frequency, amplitude and driving speed.

[0039] 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 judges whether the ground clearance is within a preset range to execute the corresponding steps; for example, when the system determines that the ground clearance between the roller and the construction ground is not within the preset range, the system will believe that due to the uneven ground and the large local height difference in the construction area, the roller fails to contact the ground evenly, affecting the compaction effect. The system will adjust the suspension system or compaction drum of the roller to make it fit the ground better and ensure uniform rolling. The system can increase the rolling frequency, improve the rolling frequency or amplitude, enhance the compaction effect, and adjust the driving speed and vibration parameters of the roller according to the compaction requirements of the construction area, 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 a preset range, the execution module 30 will believe that the roller can evenly contact the ground without affecting the compaction effect. The system will send a preset 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 preset depth of the construction ground, and analyze these induced electric fields. The electromagnetic parameters of the field, including electrical conductivity, dielectric constant and magnetic permeability; the system can collect electromagnetic parameters such as conductivity, dielectric constant and magnetic permeability at different depths through the analysis of low-frequency electromagnetic signals and induced electric field data, reflecting the compaction status of the construction ground from the surface to the deep layer, avoiding the problem that the traditional method only relies on surface detection and may ignore the problem of insufficient compaction in the deep layer. At the same time, since the system only detects when the ground clearance is within the preset range, it ensures the effective contact between the roller and the ground, thereby avoiding the impact of measurement errors or suspension on data accuracy, and ensuring that the transmission and feedback of electromagnetic signals are more stable and reliable. , and traditional methods mostly rely on sampling detection, while this method can provide continuous real-time feedback during the construction process, and dynamically adjust the construction parameters such as the number of rolling times, amplitude, speed, etc. according to the analyzed electromagnetic parameters, thereby reducing unnecessary repeated rolling or insufficient compaction and improving the construction quality. By obtaining compaction data in real time, construction personnel can adjust the construction strategy in time to avoid excessive construction or rework, reduce material, fuel and equipment losses, improve construction efficiency, and reduce construction costs; then the second judgment module 40 judges whether the electromagnetic parameters of the induced electric field match the final compaction state of the construction ground to execute the 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 the area in the construction database for subsequent quality acceptance and construction traceability, and mark the current area as "compacted" to ensure that construction personnel can visually understand the overall compaction progress, avoid repeated rolling, automatically plan the driving trajectory of the roller, and guide it to areas that do not meet the compaction standards to optimize construction efficiency. In addition, according to the current situation of the construction area, the system can reduce the vibration frequency, reduce compaction energy consumption, and even suspend the vibration mode to save energy and reduce equipment loss. 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 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 number of times the roller rolls the construction ground based on different electromagnetic parameters. Activate the GPS pre-set on the roller, and use the GPS to generate a compaction distribution heat map of the construction ground. Based on the compaction distribution heat map, dynamically adjust the roller's operating parameters, including rolling frequency, amplitude, and travel speed. By analyzing the electromagnetic parameters of the induced electric field, the system can accurately determine which areas do not meet the compaction standards without relying on traditional sampling detection methods, thereby improving the comprehensiveness and accuracy of detection. At the same time, the system calculates additional rolling times based on electromagnetic parameters to ensure that the rolling intensity of each area meets the specifications, avoiding excessive or insufficient rolling that may be caused by manual estimation, thereby optimizing construction efficiency. In addition, by generating a compaction distribution heat map in real time, the system can guide the roller to perform targeted optimization for areas that do not meet the standards, and adjust the rolling frequency, amplitude, and travel speed according to the specific conditions of the construction area to achieve precise construction. Traditional construction methods may require multiple round trips to roll the entire area, while this method uses thermal map analysis to increase rolling only in necessary areas, reduce repeated operations, and thus reduce fuel consumption, equipment wear, and labor costs. ;

[0040] In this embodiment, 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; The third execution module is used to 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.

[0041] In this embodiment, the system identifies the soil type of the construction ground, which specifically includes sandy soil, clay and loam, and then determines whether these soil types match the preset transmission frequency range to execute the corresponding steps; for example, when the system determines that the soil type of the construction ground cannot match the preset transmission frequency range, the system will consider that the frequency of the current electromagnetic signal cannot effectively penetrate or correctly reflect the electromagnetic characteristics of the soil type, which may cause distortion of the electromagnetic induction measurement data and affect the accuracy of the compaction 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 example, sandy soil has higher permeability and lower conductivity, and is suitable for using higher frequency (50kHz~100kHz) electromagnetic signals to obtain clearer sensing data. Clay has high water content and high conductivity, and is suitable for using lower frequency (10kHz~30kHz) electromagnetic signals to reduce signal attenuation and increase measurement depth. Loam is between the two. During the transmission, medium frequency (30kHz~50kHz) is usually used 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 induced electric fields at different depths to obtain accurate electromagnetic parameters that meet the current soil type. Since 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 transmission frequency range, the system will believe 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 of 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 mode specifically includes sine wave, pulse wave and sweep signal.The system can effectively overcome the interference of different electromagnetic environments at the construction site by dynamically adjusting the transmission power of the electromagnetic signal, ensuring that the electromagnetic signal 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, it can avoid signal attenuation or interference and improve measurement accuracy. At the same time, by adaptively switching the signal generation mode (sine wave, pulse wave and swept frequency signal), the system can select the most appropriate signal mode for compaction measurement according to the soil type at the construction site and the changes in electromagnetic environment noise. For example, the sine wave is suitable for a stable environment and can provide a smooth signal output. It is suitable for obtaining accurate data in an environment with less interference. The pulse wave is suitable for short-term, high-precision measurement, can effectively avoid interference in continuous signals, and is suitable for areas with relatively uniform soil types. The swept frequency signal is suitable for soil In the case of complex soil types or strong environmental noise, it can provide wide-band signals, which helps to penetrate different depths and obtain multi-level information. By adjusting the transmission power and signal mode in real time, the system can always maintain the best signal transmission quality and data acquisition capabilities in different construction environments. This means that even in complex or interference-prone construction sites, the system can still provide accurate real-time compaction data, which is convenient for dynamic adjustment of construction parameters such as rolling frequency, speed and driving path to ensure that the construction quality meets the standards. During the construction process, the interference of electromagnetic environmental noise is inevitable. By adjusting the transmission power of the signal according to different electromagnetic environmental noise, the system can effectively reduce the interference effect and improve the stability and reliability of the measurement. This can effectively avoid the interference of external signals on the compaction evaluation and cause errors, thereby improving the performance of the overall system. ;

[0042] In this embodiment, the execution module further 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.

[0043] In this embodiment, the system obtains the propagation data of electromagnetic waves in the soil based on the receiving antenna preset by 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 the 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 believe that the electromagnetic waves can effectively penetrate the soil and reflect the electromagnetic properties 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 layer through the receiving antenna, so as to obtain high-precision parameters such as soil conductivity, dielectric constant and magnetic permeability, and accurately evaluate the compaction degree of the construction ground, and then determine whether the current soil has met the compaction requirements of the engineering specifications. If the electromagnetic parameters indicate that the soil has reached the required compaction degree, the system Then it can be confirmed that the area has been compacted and the next step can be carried out. Otherwise, additional rolling can be carried out. If the compaction degree does not meet the standard, the system will dynamically adjust the operating parameters of the roller based on 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 strength of the soil, or reducing the amplitude to reduce the impact on the soil, and adjusting the driving speed to ensure more uniform and stable rolling. For example, when the system determines that the propagation data of the electromagnetic wave in the soil cannot reach the preset propagation threshold, the system will believe that the electromagnetic wave cannot effectively penetrate the soil. The system will identify the directional signal strength of the propagation data in the soil depth range according to the soil depth range pre-set by the construction requirements, and dynamically adjust the signal frequency of the electromagnetic wave according to different directional signal strengths. The signal frequency specifically includes low-frequency signals and high-frequency signals.The system identifies the directional signal strength within the soil depth range and dynamically adjusts the signal frequency (low frequency or high frequency) to enhance the penetration 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, thereby optimizing the penetration effect of electromagnetic waves. At the same time, since changes in soil type and soil conditions will affect the propagation characteristics of electromagnetic waves, in areas with denser soil or poorer electromagnetic wave penetration, the system improves signal penetration by adjusting the signal frequency. This enables the system to adaptively adjust in different construction environments, improve the accuracy of compaction detection, and Dynamically adjusting the signal frequency can ensure that the system can effectively measure at different depths according to the soil depth range and directional signal strength. Low-frequency signals are suitable for deeper measurements, while high-frequency signals are suitable for shallower measurements. This dynamic adjustment mechanism can ensure that the system covers the entire soil depth range and improves the comprehensiveness and accuracy of the measurement. By adjusting the frequency of electromagnetic waves according to the signal strength in different directions, 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 and provide strong support for subsequent compaction evaluation. ;

[0044] In this embodiment, the second execution module further includes: An acquisition unit, configured to acquire the terrain elevation information of the construction ground based on the position data pre-collected by the GPS for the road roller, wherein the position data specifically includes the current latitude and longitude, elevation, speed, direction and rolling position; A second judgment unit is used to judge whether the terrain elevation information detects a preset slope error; The second execution unit is used to 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 diagram of the roller based on the driving path, and dynamically update the orientation data through the GPS.

[0045] In this embodiment, the system obtains the terrain elevation information of the construction ground based on the position data pre-collected by the GPS for the roller, which specifically includes the current longitude and latitude, elevation, speed, direction and rolling position, and then the system determines whether these terrain elevation information detects a preset slope error to execute the corresponding steps; for example, when the system determines that the terrain 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 will allow the roller to continue operating according to the preset rolling path and parameters without additional slope correction, which can ensure the construction site is within the specified range. The construction process is carried out stably to improve construction efficiency. At the same time, combined with other parameters of the construction ground (such as soil type, compaction degree, electromagnetic parameters, etc.), the operating parameters of the roller are further optimized, such as adjusting the rolling frequency, amplitude and driving speed to ensure the best compaction effect. The current terrain elevation information, rolling trajectory and compaction data will be uploaded to the construction monitoring platform to form a real-time construction data record for subsequent construction evaluation and quality inspection. Even if the current slope error is within the allowable range, the system will still maintain dynamic monitoring of the construction terrain to prevent slope changes due to soil settlement or equipment vibration during the subsequent rolling process; for example, when the system determines that the terrain elevation information of the construction ground detects a preset slope error At this time, the system will think that the slope of the current construction area does not meet the design requirements, and there are bumps on the construction ground. The system will divide the construction ground into grid units of pre-set sizes, and draw the driving path of the roller according to different terrain elevation information. Based on these driving paths, a dynamic compaction evolution diagram of the roller is generated, and the roller's position data is dynamically updated through GPS; the system can accurately identify the bumpy areas of the construction ground by detecting the elevation information of the construction terrain and judging the slope error. The construction ground is divided based on grid units, so that the system can refine the compaction requirements of different areas, avoid uneven compaction due to local elevation changes, and improve construction quality. At the same time, based on the terrain elevation information of different grid units, the system It can dynamically adjust the driving path of the roller to ensure that the compaction operation covers the entire construction area, optimize the driving route, reduce unnecessary repeated rolling, improve construction efficiency, and reduce energy consumption. Through the compaction evolution diagram, the system can analyze the rolling status of the roller in different areas in real time, and dynamically adjust the rolling parameters, such as the number of rolling times, amplitude, rolling frequency, etc., combined with the slope error, to meet the design requirements of the construction ground, thereby ensuring that the final compaction degree meets the standard. By dynamically updating the roller's position data through GPS, the system can continuously optimize the compaction path during the construction process, and correct the rolling deviation caused by equipment drift or terrain changes in real time, ensuring that the roller always operates along the optimal path, improving construction accuracy and consistency.

[0046] In this embodiment, the judgment module further includes: A second acquisition unit is used to acquire a rolling track of the construction ground by the roller based on a gap change curve corresponding to the ground clearance; A third judgment unit, used to judge whether the rolling track affects the gap variation curve; The third execution unit is used for dynamically adjusting the rolling force of the roller on the construction ground according to the foundation hardness of the construction ground if no, wherein the foundation hardness specifically includes a soft foundation and a hard foundation.

[0047] 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, and then the system determines whether these rolling trajectories affect the gap change curve to execute the corresponding steps; for example, when the system determines that the rolling trajectory of the roller on the construction ground will affect the gap change curve, the system will consider that the current rolling operation has produced a significant effect on 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 reaction, and adjust the rolling frequency and amplitude according to the compaction degree to adapt to the current soil characteristics to prevent excessive or insufficient rolling, and appropriately adjust the driving speed, reduce the rolling frequency in areas with obvious compaction effects, and increase the vibration intensity in areas with insufficient compaction to improve construction efficiency; for example, when the system determines that the rolling trajectory of the roller on the construction ground will not affect the gap change curve, the system will consider that the current rolling operation has failed to produce sufficient effect on the compaction state of the construction ground, and the system will perform the following operations according to the gap change curve. The foundation hardness of the construction ground, which specifically includes soft foundation and hard foundation, dynamically adjusts the rolling trajectory of the roller on the construction ground; the system can identify whether the current rolling is effective by judging whether the rolling trajectory affects the gap change curve, avoid repeated operations in the area that has reached the standard, and improve construction efficiency. If the rolling does not produce enough effect, the system can dynamically adjust the trajectory so that the roller rolls to the area that needs compaction more, reducing unnecessary time and fuel consumption. At the same time, for soft foundations, the system can increase the rolling frequency or adjust the rolling mode to make the soil particles more closely arranged, improve the bearing capacity of the foundation, and prevent uneven settlement. For hard foundations, the system can reduce the rolling frequency or use different vibration modes to avoid excessive rolling causing surface damage or material breakage, thereby extending the service life of the construction ground. In addition, through GPS positioning and rolling trajectory analysis, the system can automatically adjust the roller's driving route to make the rolling more uniform and avoid uncompacted or over-compacted areas. This dynamic adjustment mechanism ensures that the entire construction ground meets the uniform compaction standard, improves project quality, and reduces subsequent maintenance costs.

[0048] In this embodiment, the second determination module further includes: an identification unit, configured to identify a final compaction state of the construction ground based on a preset compaction requirement of the construction ground, wherein the compaction requirement specifically includes soil type, moisture content, and regional compaction degree; A fourth judgment unit, used to judge whether the final compaction state meets the preset state; The fourth execution unit is used to activate the preset laser ranging sensor of the roller, 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.

[0049] 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, which specifically include soil type, moisture content and regional compaction degree, and then the system determines whether the final compaction state meets the pre-set state to execute the 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 or excessive 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 unsatisfactory due to loose soil particle structure, too high or too low moisture content, and combine historical rolling data to identify whether the current construction area has reached the maximum compaction degree to avoid unnecessary repeated rolling. At the same time, if the compaction is insufficient, the system will calculate the additional rolling times and optimize the rolling. The system can adjust the compaction 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 reduce the number of rolling times to avoid damage to the surface material or loss of elasticity. If the moisture content is detected to be 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 the construction and wait for the soil to drain naturally or use drainage equipment to accelerate the treatment to avoid the "floating slurry" phenomenon that leads to a decline in construction quality. For example, when the system determines that the final compaction state of the construction ground meets the preset state, the system will consider that the compaction degree of the construction ground has met the engineering requirements. The system will activate the laser ranging sensor pre-set by the roller, dynamically correct the electromagnetic signal attenuation 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.The system uses accurate terrain data to dynamically adjust the signal transmission method to minimize 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 places with large slopes. In addition, combined with the measurement of surface conductivity, the compaction of the soil can be more accurately evaluated. The conductivity of the soil is closely related to the soil density, so it can be accurately corrected through the conductivity data to ensure that the final compaction data is highly consistent with the actual ground state, and the electromagnetic signal and surface conductivity data are corrected in real time, which not only improves The accuracy of the data can also dynamically adjust the working parameters of the roller, such as rolling frequency and driving speed, to ensure that the compaction degree of each area during the construction process meets the requirements and avoid 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 status in time to ensure that each area meets the predetermined compaction standard, the quality problems caused by insufficient or excessive compaction are reduced. Therefore, after the construction is completed, the stability and durability of the ground are guaranteed, thereby reducing the need for later maintenance and reinforcement. ;

[0050] In this embodiment, the detection module further includes: A collection unit, used for collecting construction parameters of the roller during the construction process based on the pre-integrated sensors of the roller, 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; A fifth judgment unit, used to judge whether the construction parameters meet the preset compaction requirements of the construction ground; The fifth execution unit is used to 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, 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.

[0051] In this embodiment, the system is based on a sensor group pre-integrated in the roller. The sensors specifically include a compaction sensor, a contact pressure sensor, a moisture sensor and an on-board temperature sensor. The sensors collect the construction parameters of the roller during the construction process. The construction parameters specifically include soil compaction, the contact pressure of the steel wheel on the soil, the soil temperature and the soil moisture content. The system then determines whether these construction parameters meet the preset compaction requirements of the construction ground to execute the corresponding steps. For example, when the system determines that the construction parameters of the roller during the construction process do not meet the preset compaction requirements of the construction ground, the system will believe that the construction ground has failed to achieve the compaction required by the design at the current stage, and there may be problems such as insufficient compaction, excessive compaction or uneven compaction. The system will increase the compaction rate. Frequency, increase the number of rolling times per unit area to ensure that the soil is fully compacted. If the contact pressure is not appropriate, 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. Driving too fast may cause uneven compaction. The system can automatically adjust the driving speed to ensure uniform compaction. At the same time, it is recommended to adjust the construction time and choose a period with a more moderate temperature for compaction operations to ensure that the soil achieves the best compaction effect. In cold weather, the system will delay construction to avoid the negative impact of temperature on soil moisture and the compaction process, and continuously monitor construction parameters and dynamically adjust the operation method during the process. For example, if the soil is too wet, the system can help compaction by increasing the vibration amplitude of rolling. If 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 of the roller during the construction process can meet the preset compaction requirements of the construction ground, the system will consider that the construction ground has reached the design compaction degree at the current stage. The system will dynamically adjust the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, which specifically includes sand, gravel and clay. The induction signal specifically includes the induction signal frequency and the induction signal strength. Based on these induction signals, the system adaptively compensates for the measurement error of the ground clearance. The system can adaptively compensate for the ground clearance according to different ground materials (such as sand, gravel and clay) by dynamically adjusting the induction signal frequency and strength of the electromagnetic induction sensor. The measurement error of ground clearance means that no matter 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 sensing signal and compensating for the measurement error in real time, the system can more accurately monitor the compaction effect to ensure that the construction ground reaches the compaction degree required by the design, avoiding insufficient or excessive compaction due to measurement errors, and improving the overall construction quality. Different ground materials (such as sand, gravel, and clay) have different physical properties, which may affect the accuracy of the measurement. By dynamically adjusting the sensing signal according to the ground material, the system can optimize the sensing settings for each soil type to ensure that soils of different materials can be accurately measured and efficiently compacted.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 there is no match, the additional number of times the roller rolls the construction ground is calculated based on the electromagnetic parameters, the preset GPS of the roller is activated, a compaction distribution heat map of the construction ground is generated through 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 driving speed.

2. The method for detecting construction leveling and compaction according to claim 1, characterized in that: Before the step of sending a preset low-frequency electromagnetic signal to the surface of the construction ground by the road roller, the method further 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 so, the electromagnetic environment noise of the construction site is collected, and the transmission power of the low-frequency electromagnetic signal is dynamically adjusted according to the electromagnetic environment noise. According to the soil type, the signal generation mode of the low-frequency electromagnetic signal is adaptively switched, wherein the signal generation mode specifically includes a sine wave, a pulse wave and a swept frequency signal.

3. The method for detecting construction leveling and compaction according to claim 1, characterized in that: 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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; The second execution module is used to calculate the additional number of times the roller rolls the construction ground based on the electromagnetic parameters if there is a mismatch, activate the GPS preset by 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, wherein the operating parameters specifically include rolling frequency, amplitude and driving speed.

9. The construction leveling and compaction detection system according to claim 8, characterized in that: 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; The third execution module is used to 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.

10. The construction leveling and compaction detection system according to claim 8, characterized in that: 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.

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