An intelligent control system for improving the precision of an asphalt pavement paver and an asphalt pavement paver

Abstract

This invention discloses an intelligent control system and an asphalt pavement paver for improving the accuracy of asphalt pavement pavers. The system includes: a digital control system for real-time acquisition of environmental and construction data, processing the acquired data, generating control logic, and issuing execution commands to precisely adjust the paver's movements; an intelligent monitoring and communication system that communicates with the digital control system to remotely monitor and control the paver and perform fault diagnosis; and an intelligent construction assistance system that communicates with the digital control system to improve construction accuracy and consistency, optimize construction efficiency, enhance construction quality and safety, and manage and analyze data. This invention achieves automation and intelligence in asphalt pavement paving and compaction through the use of digital control technology and intelligent monitoring and communication technology, thereby improving construction accuracy and quality.

Description

Technical Field

[0001] This invention relates to the field of road construction technology, specifically to an intelligent control system for improving the accuracy of asphalt pavement pavers and an asphalt pavement paver. Background Technology

[0002] In the field of road construction, the paving quality of asphalt pavement directly affects the service life of roads and driving safety. Although traditional pavers have improved construction efficiency to some extent, they also have problems such as low construction precision and difficulty in guaranteeing construction quality. Summary of the Invention

[0003] To address the problems existing in asphalt pavement paving and compaction technology, the present invention aims to provide an intelligent control system for improving the accuracy of asphalt pavement pavers, thereby meeting the technical requirements of adjustable paving width and automated pavement compaction.

[0004] Another objective of this invention is to provide an asphalt pavement paver employing the aforementioned intelligent control system, which achieves automation and intelligence in asphalt pavement paving and compaction through the use of digital control technology, intelligent monitoring and communication technology, thereby improving construction accuracy and quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent control system for improving the accuracy of asphalt pavement pavers, comprising:

[0006] The digital control system is used to collect environmental and construction data in real time, process the collected data, generate control logic and issue execution commands to precisely adjust the actions of the paver.

[0007] The intelligent monitoring and communication system communicates with the digital control system to enable remote monitoring and control of the paver and to perform fault diagnosis.

[0008] The intelligent construction assistance system communicates with the digital control system to improve construction accuracy and consistency, optimize construction efficiency, enhance construction quality and safety, and manage and analyze data.

[0009] Optionally, the digital control system includes:

[0010] The central control unit is responsible for receiving data from the sensor network module, preprocessing and analyzing this data, and then generating corresponding control commands according to the preset program and algorithm.

[0011] The sensor network module communicates with the central control unit and includes various sensors distributed in different parts of the paver. It is used to collect and display the collected data and collect various parameters of the paver in real time during operation.

[0012] The actuator module communicates with the central control unit to enable the paver to precisely adjust its movements according to the control commands issued by the central control unit.

[0013] Optionally, the intelligent monitoring and communication system includes:

[0014] The wireless communication module supports Wi-Fi and 4G / 5G wireless communication methods, providing a network environment for remote monitoring and control.

[0015] The remote monitoring module communicates with the digital control system through the wireless communication module to display the real-time operating status of the paver and provide remote control and remote fault diagnosis functions.

[0016] The fault diagnosis module communicates with the digital control system through the wireless communication module to monitor the paver's operating status in real time based on data collected by the sensor network module, and to automatically identify and diagnose faults that occur during paving operations.

[0017] Optionally, the intelligent construction assistance system includes:

[0018] The automated leveling subsystem includes a telescopic screed and various sensors installed on it, which are used to automatically adjust the paving thickness and slope to improve the smoothness of the road surface.

[0019] The walking hydraulic subsystem, including drive gears, rubber tracks, and speed sensors, provides walking power during paving operations, enabling the paver to perform paving operations at a preset speed and along a preset route.

[0020] The receiving electrical control subsystem includes an ultrasonic level gauge, which is used to monitor the level of asphalt mixture in the paver hopper in real time and control the amount of asphalt mixture received.

[0021] The transport and placement subsystem includes a discharge port, a guide hopper, a mixing hopper, a discharge limiter, and a discharge limit plate. It is responsible for longitudinally transporting asphalt raw materials and laterally spreading them on the road surface to ensure the uniformity of the paving layer.

[0022] The real-time monitoring subsystem, including visual sensors, cameras, and the BeiDou satellite navigation system, is used to monitor paving operations in real time.

[0023] The quality analysis subsystem includes multiple sensors distributed in different parts of the paver, which are used to perform real-time analysis on the data collected by the sensor network module and provide construction quality reports and suggestions.

[0024] The resource progress management subsystem contains a construction plan for real-time tracking of construction progress, providing progress reports and early warnings, intelligently scheduling and optimizing resources, and improving construction efficiency.

[0025] As described above, the digital control system, intelligent monitoring and communication system, and intelligent construction auxiliary system are all independent yet interconnected, operating in an orderly manner and cooperating precisely to achieve automation and intelligence in asphalt pavement paving. This improves construction accuracy and quality, reduces construction costs, and yields significant economic and social benefits.

[0026] Furthermore, the sensors include a pressure sensor, a temperature sensor, a vision sensor, an ultrasonic thickness sensor, a speed sensor, a longitudinal acceleration sensor, a lateral acceleration sensor, and an ultrasonic level gauge;

[0027] The pressure sensors are located at the bottom of the paver's hopper, the middle and end of the auger mixer, and the front of the screed. The temperature sensors are located at the rear of the paver's screed and distributed above the paver. The vision sensors are located at the front of the base's extended frame, on both sides of the rammer, and at the asphalt outlet. The ultrasonic thickness sensors are located on the paver's screed.

[0028] The speed sensor is located at the drive gear shaft of the paver; the longitudinal acceleration sensor is located at the center of the upper surface of the connecting block of the screw slide rail assembly of the paver; the transverse acceleration sensor is located at both ends of the upper surface of the first-stage telescopic plate of the paver; and the ultrasonic level gauge is located in the middle of the inner side of the material guide hopper of the paver.

[0029] Accordingly, the present invention also claims protection for an asphalt pavement paver employing the aforementioned intelligent control system, characterized in that it includes a base and a retractable screed, a tamper, a hopper, and a roller mounted on the base; wherein: the base includes a base platform, a platform connecting rod, a platform support rod, an extension frame, camera a, camera b, a base beam, a drive gear, a rubber track, and a gear baffle; the platform connecting rod, platform support rod, extension frame, and base beam are connected to the base platform; the base beam is connected to the gear baffle; the drive gear is installed inside the gear baffle and meshes with the rubber track; camera a and camera b are mounted on the base platform; and the front end of the extension frame has a first fixing hole and a second fixing hole.

[0030] Optionally, the retractable ironing board includes a fixed rod a, a connecting rod, a shock-absorbing spring a, a hydraulic telescopic rod a, a lead screw slide rail assembly connecting block, a primary telescopic plate, a secondary telescopic plate, and a lead screw slide rail assembly. The fixed rod a is installed on the second fixed hole and is connected to the connecting rod. The shock-absorbing spring a is sleeved on the outside of the hydraulic telescopic rod a. The lead screw slide rail assembly connecting block is connected to the connecting rod through the hydraulic telescopic rod a. The lead screw slide rail assembly connecting block is connected to the primary telescopic plate. The lead screw slide rail assembly and the lead screw slide rail assembly connecting block are embedded and assembled. The lead screw slide rail assembly is connected to the secondary telescopic plate.

[0031] The lead screw and slide rail assembly includes a slide groove, a movable connecting block, a lead screw, a lead screw fixing block, a lead screw fixing ring, a lead screw limiting block, and a lead screw and slide rail drive motor. The lead screw passes through and is installed in the movable connecting block, the lead screw fixing block, the lead screw fixing ring, and the lead screw limiting block, and is also locked inside the slide groove. The lead screw is connected to the lead screw and slide rail drive motor. A secondary telescopic plate is installed above the movable connecting block and is assembled inside the primary telescopic plate.

[0032] Optionally, the ramming machine includes a connecting platform, a motor base, a ramming plate base, a ramming plate, a motor, a shock-absorbing spring b, a main hydraulic telescopic rod, a secondary hydraulic telescopic rod, and a shock-absorbing spring c. The shock-absorbing spring b is nested with the main hydraulic telescopic rod and the secondary hydraulic telescopic rod. The ends of the main hydraulic telescopic rod and the secondary hydraulic telescopic rod are respectively connected to the connecting platform and the ramming plate base. The motor is connected to the motor base, and the motor base is installed on the upper surface of the ramming plate base. The ramming plate base is connected to the ramming plate, and the shock-absorbing spring c is connected to the ramming plate.

[0033] Optionally, the hopper includes a guide hopper, a mixing hopper, a heat-insulating hopper, a discharge port, a spiral agitator, a discharge limiter, a discharge limit plate, and a discharge limit plate gear. The guide hopper is connected to the mixing hopper, and the mixing hopper is connected to the heat-insulating hopper. The spiral agitator is installed inside the mixing hopper, and a spiral agitator motor driver is provided outside the mixing hopper to drive the spiral agitator to rotate. The discharge port is located below the heat-insulating hopper, and a discharge limiter is installed on the discharge port. The discharge limit plate and the discharge limit plate gear are assembled inside the discharge limiter, and the discharge limit plate gear is distributed at both ends of the discharge limit plate.

[0034] Optionally, the roller includes a fixed rod b, a shock-absorbing spring d, a hydraulic telescopic rod b, a screw-electric telescopic rod connecting block, a main telescopic roller, a secondary telescopic roller, and a screw-electric telescopic rod. The fixed rod b is connected to a first fixed hole. The two sides of the hydraulic telescopic rod b are respectively connected to the fixed rod b and the screw-electric telescopic rod connecting block. The shock-absorbing spring d is nested outside the hydraulic telescopic rod b. The screw-electric telescopic rod connecting block is connected to the main telescopic roller, and the secondary telescopic roller is connected to the screw-electric telescopic rod.

[0035] The lead screw electric telescopic rod includes a push rod motor, a push rod fixing frame, a push rod end fixing ring, a push rod active telescopic rod, a push rod fixing ring, a push rod limiting plate, a push rod driven telescopic rod, and a push plate. The push rod motor is connected to the push rod fixing frame, and the push rod end fixing ring is also connected to the push rod fixing frame. The push rod active telescopic rod passes through the central opening of the push rod end fixing ring and the push rod fixing frame, and is screwed into and fixed by the push rod motor. The central opening of the push rod fixing ring passes through the push rod active telescopic rod, and the push rod driven telescopic rod passes through three evenly distributed limiting holes in the push rod limiting plate. Its front end is connected to the push plate by screws, and its end is connected to the push rod fixing ring by screws. The push plate is connected to the secondary telescopic roller and nested inside the main telescopic roller.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. This invention, through the use of rubber tracks, drive gears, etc., enables the robot to move flexibly and adapt to different working environments during use.

[0038] 2. This invention can complete the compaction of the foundation by using a ramming machine in conjunction with shock-absorbing springs.

[0039] 3. This invention, by using a retractable roller and a retractable screed together, allows for free adjustment of the paving width during use.

[0040] 4. By setting up a display screen, the present invention allows users to set operation parameters, monitor operation status, and perform remote control during use.

[0041] 5. This invention achieves automation and intelligence in asphalt pavement paving and compaction by using digital control technology, intelligent monitoring and communication technology, thereby improving construction accuracy and quality. Attached Figure Description

[0042] Figure 1 This is a block diagram of the overall structure of the intelligent control system of the present invention;

[0043] Figure 2 This is a logic block diagram of the digital control system in the intelligent control system of the present invention;

[0044] Figure 3 This is a diagram showing the relative positions of some subsystems of the intelligent construction auxiliary system in the intelligent control system of this invention;

[0045] Figure 4 This is a hierarchical diagram of the intelligent control system of the present invention;

[0046] Figure 5 This is a schematic diagram of the overall structure of the asphalt pavement paver of the present invention;

[0047] Figure 6 This is a bottom view of the asphalt pavement paver of the present invention;

[0048] Figure 7 This is a schematic diagram of the retractable ironing board structure of the present invention;

[0049] Figure 8 This is a schematic diagram of the telescopic rod structure of the telescopic ironing board of the present invention;

[0050] Figure 9 This is a schematic diagram of the lead screw and guide rail assembly structure of the present invention;

[0051] Figure 10 This is a partial enlarged view of the lead screw and guide rail assembly of the present invention;

[0052] Figure 11 This is a schematic diagram of the structure of the tamping machine of the present invention;

[0053] Figure 12 This is a schematic diagram of the telescopic rod structure of the rammed earth machine of the present invention;

[0054] Figure 13 This is a schematic diagram of the hopper structure of the present invention;

[0055] Figure 14 This is a partial enlarged view of the hopper discharge restriction plate of the present invention;

[0056] Figure 15 This is a diagram showing the relative positions of the spiral agitator motor driver in the hopper of the present invention;

[0057] Figure 16 This is a schematic diagram of the roller structure of the present invention;

[0058] Figure 17 This is a schematic diagram of the electric actuator structure of the present invention;

[0059] Figure 18 This is a schematic diagram of the base structure of the present invention;

[0060] Figure 19 This is a diagram showing the relative positions of the motor and the hopper spiral agitator of the present invention.

[0061] Explanation of reference numerals in the attached figures:

[0062] 10-Digital Control System:

[0063] 11-Central control unit; 12-Sensor network module; 13-Actuator module;

[0064] 20-Intelligent Monitoring and Communication System:

[0065] 21-Wireless communication module; 22-Remote monitoring module; 23-Fault diagnosis module;

[0066] 30-Intelligent Construction Auxiliary System:

[0067] 31-Automatic leveling subsystem; 32-Travel hydraulic subsystem; 33-Material receiving electrical control subsystem; 34-Transport and fabric laying subsystem; 35-Real-time monitoring subsystem; 36-Quality analysis subsystem; 37-Resource schedule management subsystem.

[0068] 1000-Extendable Ironing Board:

[0069] 1101-Fixed rod a; 1102-Connecting rod; 1103-Shock-absorbing spring a; 1104-Hydraulic telescopic rod a; 1201-Screw and slide rail assembly connecting block; 1202-First-stage telescopic plate; 1203-Second-stage telescopic plate; 1300-Screw and slide rail assembly; 1301-Slide groove; 1302-Moving connecting block; 1303-Slide rail screw; 1304-Slide rail screw fixing block; 1305-Slide rail screw fixing ring; 1306-Slide rail screw limit block; 1401-Slide rail screw drive motor;

[0070] 2000-Rammer:

[0071] 2101-Connecting platform; 2102-Motor base; 2103-Compactor plate base; 2104-Compactor plate; 2201-Motor; 2301-Shock absorber spring b; 2302-Main hydraulic telescopic rod; 2303-Secondary hydraulic telescopic rod; 2304-Shock absorber spring c;

[0072] 3000-Hopper:

[0073] 3101 - Feed hopper; 3102 - Mixing hopper; 3103 - Insulated hopper; 3104 - Discharge port; 3105 - Spiral agitator; 3106 - Discharge limiter; 3107 - Discharge limit plate; 3108 - Discharge limit plate gear; 3109 - Spiral agitator motor driver; 3110 - Spiral agitator motor; 3111 - Spiral agitator transmission bearing;

[0074] 4000-Road Roller:

[0075] 4101-Fixed rod b; 4102-Shock-absorbing spring d; 4103-Hydraulic telescopic rod b; 4201-Screw-driven electric telescopic rod connecting block; 4202-Main telescopic roller; 4203-Secondary telescopic roller; 4300-Screw-driven electric telescopic rod; 4301-Push rod motor; 4302-Push rod fixing frame; 4303-Push rod end fixing ring; 4304-Push rod active telescopic rod; 4305-Push rod fixing ring; 4306-Push rod limiting plate; 4307-Push rod driven telescopic rod; 4308-Push plate;

[0076] 5000 - Base:

[0077] 5101 - Base platform; 5102 - Platform connecting rod; 5103 - Platform support rod; 5104 - Extension frame; 5105 - Oil tank; 5106 - Display screen; 5107a - Camera a; 5107b - Camera b; 5201 - Base crossbeam; 5202 - Drive gear; 5203 - Rubber track; 5204 - Gear baffle;

[0078] a - First fixing hole; b - Second fixing hole. Detailed Implementation

[0079] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0080] This invention provides an intelligent control system and an asphalt paver for improving the accuracy of asphalt pavers during road construction. It enables the paver to flexibly adjust the paving width according to the road width while compacting the ground. Through the precise collaboration of digital control technology, intelligent monitoring and communication technology, it achieves automation and intelligence in asphalt paver paving, thereby improving construction accuracy and quality.

[0081] Example 1:

[0082] This embodiment provides an intelligent control system for improving the accuracy of asphalt pavement pavers, addressing the problems of low construction accuracy, difficulty in ensuring construction quality, and lack of intelligent control during asphalt paving. For example... Figure 1 As shown, the system includes:

[0083] The digital control system 10 is used to collect environmental data and construction data in real time, process the collected data, generate control logic and issue execution commands, thereby precisely adjusting the actions of the paver.

[0084] Specifically, such as Figure 2 As shown, the digital control system 10 includes a central control unit 11, a sensor network module 12, and an actuator module 13. The main functions of the digital control system 10 are data acquisition, data analysis, and intelligent decision-making. The data acquisition task is performed by the sensor network module 12.

[0085] The sensor network module 12 includes various sensors such as the BeiDou Navigation Satellite System, pressure sensors, temperature sensors, vision sensors, ultrasonic thickness sensors, speed sensors, longitudinal acceleration sensors, lateral acceleration sensors, and ultrasonic level gauges. The access to the BeiDou Navigation Satellite System enables the asphalt paver to plan its path and achieve autonomous navigation on a given map using positioning information. The high-precision positioning data provided by the BeiDou Navigation Satellite System can be used for the navigation of the asphalt paver. By receiving signals transmitted by the BeiDou satellites, the asphalt paver can achieve accurate positioning and navigation functions and has strong obstacle avoidance capabilities. Specifically, the BeiDou Navigation Satellite System can achieve accurate positioning of the paver in three-dimensional space through the positioning signals provided by the satellites, which is the basis for the asphalt paver to achieve autonomous movement. The pressure sensors are specifically HDP301W flat diaphragm anti-clogging pressure sensors, distributed at the bottom of the hopper, the middle and end of the spiral mixer, and the front of the screed. During asphalt paving, the HDP301W flat diaphragm anti-clogging pressure sensors can monitor the pressure changes of the asphalt in real time during the paving process, ensuring the uniform distribution of the asphalt. By measuring pressure, the flow state and paving effect of asphalt can be indirectly determined, allowing for timely adjustments to the operating parameters of the asphalt paver. Temperature sensors include the ET930 infrared temperature sensor and the DS18B20 intelligent temperature sensor. The ET930 infrared temperature sensor is located at the rear of the screed. After the asphalt has passed through the screed, the ET930 infrared temperature sensor measures the temperature of the asphalt surface, offering convenient operation without damaging the road surface. The DS18B20 intelligent temperature sensor is located above the asphalt paver and measures the ambient temperature. The DS18B20 intelligent temperature sensor directly converts the measured temperature into a serial digital signal, transmitting the measurement results in 9-12 bit digital format. Data transmission uses a "one-wire bus" method, improving the system's anti-interference capability. Vision sensors are distributed at the front of the asphalt paver's base extension frame, on both sides of the tamper, and at the asphalt outlet. They capture image information from the asphalt paver's working environment, collecting real-time information such as road surface smoothness, obstacle positions, and road edge positions. Image processing technology analyzes this information to make corresponding adjustments, ensuring the correct operating mode of the asphalt paver. An ultrasonic thickness sensor is installed on the screed of an asphalt paver. It measures distance by emitting ultrasonic waves and receiving the reflected signals. During the asphalt paving process, the asphalt paving thickness is calculated by measuring the distance from the screed to the asphalt pavement.The speed sensor is installed at the drive gear shaft. When the asphalt paver moves, the rotation of the drive gear causes the Hall element in the speed sensor to generate a change in magnetic field. The sensed rotation information is converted into an electrical signal, and the electrical signal is proportional to the rotation speed of the drive gear. The converted electrical signal is transmitted to the sensor network module 12 in the intelligent control system of the high-precision asphalt paver. After further processing and calculation by the central control unit 11, the travel speed of the asphalt paver is finally obtained.

[0086] The travel speed of an asphalt paver can be calculated using the following formula:

[0087]

[0088] In the formula, C is the circumference of the rotating component, in meters (m), which can be calculated by measuring the diameter of the drive gear. T The rotational speed at time T is directly measured by the speed sensor, and the unit is revolutions per minute (rpm). 60 is a constant. V T The speed of the asphalt paver at time T is expressed in meters per second (m / s).

[0089] The central control unit 11 is the core of the intelligent control system, consisting of a high-performance processor and control software. The central control unit 11 receives data from the sensor network module 12, preprocesses and analyzes this data, and then generates corresponding control commands according to a preset program and algorithm. The algorithm includes a PID control algorithm and a fuzzy adaptive PID control algorithm. The PID control algorithm controls parameters such as the travel speed and paving thickness of the asphalt paver, specifically in three aspects: proportional control (P), which adjusts the control quantity (e.g., drive gear speed) according to the error, such as the difference between the set paving speed and the actual paving speed, or the difference between the set paving thickness and the actual paving thickness, based on the ratio obtained from the simulation test. As the error increases, the control quantity is adjusted more to quickly reduce the error, allowing the asphalt paver to respond quickly to the error and adjust the travel speed and paving thickness to approach the set value; and integral control (I), which integrates the error, i.e., accumulates past error values, and adjusts the control quantity based on the integral result to eliminate the static error of the system. That is, when the error persists for a long time, the control quantity is gradually adjusted through integral control to make the error approach zero. During the paving process, integral control ensures that the asphalt paver can maintain a stable paving speed and thickness even after long-term operation, avoiding a decline in paving quality due to error accumulation. Derivative control (D) adjusts the control quantity based on the derivative of the error to predict future error trends and make adjustments in advance, thereby reducing the dynamic error of the intelligent control system during paving. Derivative control can predict the changing trends of paving speed and thickness and adjust the control quantity in advance to avoid fluctuations in paving quality caused by sudden changes in speed or thickness.

[0090] The fuzzy adaptive PID control algorithm dynamically adjusts PID parameters based on the actual working conditions and errors of the asphalt paver to improve paving quality and construction efficiency. It comprises a fuzzy control component and an adaptive PID control component. The fuzzy control component, based on fuzzy sets and fuzzy logic, summarizes the operator's experience and knowledge into a series of linguistic rules. In the asphalt paver, the fuzzy control component can derive the adjustment amount of the PID parameters through fuzzy inference based on the current error *e* and the error change rate *ec*. The fuzzy control component can handle uncertainties and nonlinearities, adapting to changes in the asphalt paver's working conditions. By dynamically adjusting the PID parameters, fuzzy control ensures that the paver maintains good control performance under various conditions. The adaptive PID control component, based on PID control, introduces fuzzy control to dynamically adjust the PID parameters (Kp, Ki, Kd). The fuzzy control algorithm can derive the adjustment amount of the PID parameters through fuzzy inference based on the current error *e* and the error change rate *ec*, then add it to the original PID parameters to obtain a new PID parameter value. This new PID parameter value will be used to adjust the paver's control input to reduce errors and improve control performance. Adaptive PID control dynamically adjusts PID parameters based on the actual working conditions and errors of the paver, ensuring the intelligent control system maintains good stability and response speed under different conditions. This improves paving quality and construction efficiency while reducing operational difficulty and manual intervention. After data analysis using the aforementioned algorithm, precise execution commands are automatically generated. The execution mechanism module 13, including the screed, roller, and motor, receives commands from the central control unit 11 and drives the corresponding mechanisms to achieve precise operation.

[0091] Basic formula of PID control algorithm:

[0092]

[0093] In the formula, U(t) is the control quantity output by the central control unit at time t, which can be the speed, power, or other parameters of the asphalt paver. E(t) is the deviation at the current time t, i.e., the difference between the target value and the actual value. In the control process of the asphalt paver, the target value can be the desired paving speed, thickness, or mass, while the actual value is the actual data obtained by measuring the current paving state through sensors. Kp is the proportional gain, which determines the sensitivity of the control action to the deviation. When a deviation exists, the proportional control will immediately generate a control action to correct the deviation. Ki is the integral gain, which is used to eliminate continuous static errors. Integral control generates a control quantity by accumulating the deviation, thereby gradually eliminating steady-state errors. Kd is the derivative gain. Derivative control adjusts the control quantity in advance by predicting the trend of deviation changes, thereby avoiding overshoot and oscillation. ∫E(t)dt is the integral term of the error, representing the cumulative value of the deviation from the initial time to time t. The differential term of the error represents the rate of change of the deviation.

[0094] The intelligent monitoring and communication system 20 includes a wireless communication module 21, a remote monitoring module 22, and a fault diagnosis module 23. The main function of the intelligent monitoring and communication system 20 is wireless communication to achieve remote monitoring and control, and to perform fault diagnosis.

[0095] Specifically, the intelligent monitoring and communication system 20 provides a platform for human-machine interaction. The wireless communication module 21 supports Wi-Fi and 4G / 5G wireless communication methods, and is responsible for wirelessly transmitting data collected by various sensors on the asphalt paver, as well as the asphalt paver's status information, to a remote data processing center and back-end management system. Simultaneously, it can also receive instructions or configuration information from these systems, enabling remote monitoring and control of the asphalt paver. The working principle of the wireless communication module 21 will be explained below:

[0096] Data acquisition: Various sensors on the paver collect key parameters during the paving process in real time, such as paving temperature, speed, and compaction degree. These data are transmitted to the central control unit 11 of the paver through the sensor network module 12.

[0097] Data encapsulation and encryption: The central control unit 11 encapsulates the collected data, adding necessary protocol headers and verification information to ensure data integrity and accuracy. To ensure data security, the data is encrypted to prevent it from being stolen or tampered with during transmission.

[0098] Wireless transmission: The encapsulated and encrypted data is transmitted to the air interface via the wireless communication module 21. The wireless communication module 21 selects an appropriate communication frequency band and modulation method to ensure stable data transmission in complex construction environments.

[0099] Data Reception and Analysis: The remote data processing center receives data from the asphalt paver via its wireless communication module 21. The received data is decrypted and analyzed to reconstruct the original sensor data and paver status information. This information is stored in a database for subsequent analysis and processing.

[0100] Command Issuance and Feedback: The central control unit 11 can also issue commands or configuration information to the paver. These commands are transmitted to the intelligent control system of the asphalt paver via the wireless communication module 21. The actuator 13 performs corresponding operations according to the commands and feeds back the operation results to the central control unit 11 via the wireless communication module 21.

[0101] The remote monitoring module 22 relies on the central control unit 11, sensor network module 12, actuator module 13, and wireless communication module 21 for its functionality. First, the sensor network module 12 converts the collected data into electrical signals, which are then processed and analyzed by the central control unit 11. Subsequently, the wireless communication module 21 sends the processed data and necessary control commands to the remote control center. Second, the remote monitoring platform receives the data transmitted by the wireless communication module 21 and analyzes and stores it in real time through a software interface. Monitoring personnel can visually observe the real-time operating status of the asphalt paver through the software interface and remotely control the asphalt paver as needed. Remote control commands are sent to the wireless communication module 21 of the asphalt paver via a wireless network, and then the actuator module 13 executes the corresponding adjustment operations. Finally, the remote monitoring module 22 can also adjust the operating status of the asphalt paver in real time based on feedback from the remote monitoring center.

[0102] The fault diagnosis module 23 provides strong support for the maintenance and upkeep of the asphalt paver. First, the sensor network module 12 acquires data and converts physical quantities into electrical signals, performing preliminary amplification, filtering, and analog-to-digital conversion to facilitate subsequent signal processing. Then, the central control unit 11 performs preprocessing operations such as noise reduction and filtering to reduce noise interference with the fault diagnosis module 23 and improve its accuracy. Finally, the fault diagnosis module 23 includes various fault diagnosis algorithms, including rule-based fault diagnosis, model-based fault diagnosis, and machine learning-based fault diagnosis.

[0103] Rule-based fault diagnosis: A fault diagnosis rule base is established based on known asphalt paver fault modes and symptoms. The collected feature information is matched with the rules in the rule base to determine whether the paver has a fault, and if so, the type and severity of the fault.

[0104] Model-based fault diagnosis: A simulation model of an asphalt paver is used to simulate and analyze the paver's working process. By comparing the simulation results with the actual collected data, it is determined whether the paver has a fault and the cause of the fault.

[0105] Machine learning-based fault diagnosis: This method utilizes machine learning algorithms such as neural networks, support vector machines, and decision trees to learn and train on collected feature information. The trained model can then classify and predict new feature information, thereby determining whether an asphalt paver has a fault and what type of fault it is.

[0106] Intelligent construction auxiliary system 30, such as Figure 3 As shown, the intelligent construction auxiliary system 30 includes an automatic leveling subsystem 31, a walking hydraulic subsystem 32, a material receiving electrical control subsystem 33, a transport and placement subsystem 34, a real-time monitoring subsystem 35, a quality analysis subsystem 36, and a resource and progress management subsystem 37. The main functions of the intelligent construction auxiliary system 30 include improving construction accuracy and consistency, optimizing construction efficiency, enhancing construction quality and safety, and data management and analysis.

[0107] Specifically, the intelligent construction assistance system 30 includes multiple subsystems that work together to make asphalt paver operations more efficient and intelligent.

[0108] The automatic leveling subsystem 31 includes a telescopic screed and various sensors mounted on it, relying on a central control unit 11, a sensor network module 12, and an actuator module 13. First, longitudinal acceleration sensors in the sensor network module 12 are located at the center of the upper surface of the screw-rail assembly connecting block 1201 of the asphalt paver, used to detect changes in the paver's height in the longitudinal direction, i.e., the forward direction. When uneven roadbeds or other factors cause the paver to fluctuate vertically, the longitudinal acceleration sensors can detect this fluctuation and generate corresponding error signals. Lateral acceleration sensors are located at both ends of the upper surface of the first-stage telescopic plate 1202 of the asphalt paver, used to detect changes in the lateral angle of the screed, ensuring that the screed maintains the set cross slope position in the lateral direction. Subsequently, the error signals generated by these two types of sensors are processed by the central control unit 11. The central control unit 11 amplifies, filters, and calculates the signals to determine the paving height or screed lateral angle that needs adjustment. Then, based on the processed error signals, the central control unit 11 calculates the correction value for the paving height or screed lateral angle that needs adjustment. Finally, the central control unit 11 sends instructions to the actuator module 13, and drives the extension and retraction of each telescopic rod according to the instructions of the central control unit 11, so that the screed can be kept at the set paving height and cross slope position, and achieve automatic leveling.

[0109] The travel hydraulic subsystem 32 enables the asphalt paver to travel smoothly and precisely. The travel hydraulic subsystem 32 mainly consists of a drive gear, rubber tracks, and speed sensors. The speed sensor is installed within the travel hydraulic subsystem 32 at the drive gear axle. When the travel hydraulic subsystem 32 is operating, the sensor network module 12 detects the rotational speed signal. These signals are then transmitted to the central control unit 11, which processes the signals and converts them into control output signals. The speed command output by the central control unit 11 is amplified after D / A conversion and then transmitted to the actuator module 13. The actuator module 13 ultimately controls the rotation of the drive gear. When the central control unit 11 outputs a constant speed signal, the rotational speed of the drive gear located on the base also remains constant. At this time, the feedback signal detected by the sensor network module 12 is also constant, and the analysis results of the deviation voltage by the fault diagnosis module 23 are also stable. This allows the paver to maintain a constant speed within a certain speed range, ensuring the uniformity of the paving operation and the construction quality.

[0110] The receiving electrical control subsystem 33 includes ultrasonic level gauges, etc. These structures work together to receive and control the asphalt mixture. The receiving electrical control subsystem 33 is powered by a power source to ensure the normal operation of the entire system. During the receiving process, the ultrasonic level gauge located in the middle of the inner side of the feed hopper monitors the asphalt mixture level in the hopper in real time. When the level reaches the set value, the sensor network module 12 sends a signal to the central control unit 11, which then sends an early warning notification through the resource progress management subsystem 37 to remind the staff to stop receiving the material, thereby controlling the amount of asphalt mixture received.

[0111] The transport and placement system 34 includes a discharge port, a guide hopper, a mixing hopper, a discharge limiter, and a discharge limiting plate. Asphalt mixture is fed into the guide hopper from the side of the asphalt paver via a guide chute and moves with the paver. After entering the guide hopper, the asphalt mixture is mixed by a spiral mixer in the mixing hopper and then enters the insulated hopper. When discharge is needed, the previously closed discharge limiting plate opens under the action of the discharge limiter, allowing the asphalt mixture to flow onto the ground. The base then moves, and the roller extends to initially compact the asphalt mixture, thus transporting it laterally across the entire paving width of the paver and laying it on the roadbed. The screed then vibrates, pre-compacts, shapes, and smooths the paving layer, creating a flat layer with a certain density, thereby achieving precise placement.

[0112] The real-time monitoring subsystem 35 includes sensors such as visual sensors and cameras, along with the BeiDou satellite navigation system. The visual sensors assist in controlling the paving thickness and monitoring the road surface condition in real time, enabling real-time monitoring and feedback guidance for the paving and compaction processes. After the sensor network module 12 collects data and sends it to the central control unit 11, it performs preliminary processing and cleaning to ensure the accuracy and integrity of the data. Subsequently, the processed data is analyzed in depth using built-in algorithms to assess whether the construction quality meets design requirements. This includes comparing actual construction parameters with design parameters and detecting potential quality problems.

[0113] The quality analysis subsystem 36 includes various sensors distributed across different parts of the paver, including pressure sensors, temperature sensors, vision sensors, ultrasonic thickness sensors, speed sensors, longitudinal acceleration sensors, lateral acceleration sensors, and ultrasonic level gauges, which monitor key parameters such as temperature, speed, thickness, and compaction degree in real time during the paving process. This real-time data not only provides rapid feedback to construction personnel but also allows them to adjust construction parameters promptly, ensuring that the paving quality meets design requirements. The data processing and analysis software built into the central control unit 11 can perform in-depth analysis of the collected data to assess whether the construction quality meets standards. This includes comparing actual construction parameters with design parameters, detecting potential quality problems, and providing data support for subsequent quality improvements. Through the quality analysis subsystem 36, construction managers can more precisely control the construction accuracy of paving and compaction. For example, the intelligent control system can monitor the paving thickness and compaction cycles in real time, ensuring that each layer of asphalt is of uniform thickness and avoiding problems of being too thin or too thick. This precise monitoring method greatly reduces errors during construction and improves the overall smoothness and durability of the road surface. The introduction of a quality analysis subsystem reduces human intervention and error, ensuring standardization and normalization of the construction process. The subsystem can also generate quality reports and recommendations. This not only improves construction efficiency but also significantly enhances the stability of construction quality. Furthermore, systematic monitoring and data recording help construction managers gain a comprehensive understanding of the real-time situation at the construction site, avoiding information asymmetry and improving management transparency.

[0114] The resource schedule management subsystem 37 can intelligently schedule and optimize resources, reduce resource waste and waiting time, improve construction efficiency, and ensure that construction quality and progress are advanced simultaneously by monitoring key data in real time during the construction process. It reduces manual intervention and management costs through automation and intelligent means. The resource schedule management subsystem 37 allows for editing of construction plans, real-time tracking of construction progress and provision of progress reports and early warnings, and automatic scheduling of personnel and equipment to optimize resource allocation based on construction progress and resource needs. The algorithms used in the resource schedule management subsystem 37 include Critical Path Method (CPM), Program Evaluation and Review Technique (PERT), Ant Colony Algorithm, Dynamic Programming Algorithm, and Genetic Algorithm. CPM analyzes the time relationships and dependencies between various activities in the project to determine the shortest completion time and identify the critical activities that have the greatest impact on the project schedule. In the resource schedule management subsystem 37 for asphalt pavement pavers, the CPM algorithm can be used to calculate the time nodes of key construction stages such as paving and compaction, as well as the estimated completion time of the entire project. PERT is used to estimate project activity times and formulate project plans. It considers the uncertainty and probability distribution of activity time, thus improving the accuracy of project time estimation. In the resource schedule management subsystem 37, the PERT algorithm can be used to assess the time requirements of different construction stages and to formulate more reasonable construction plans. The ant colony optimization algorithm is an optimization algorithm that simulates the foraging behavior of ants in nature. It solves combinatorial optimization problems by simulating the behavior of ants releasing pheromones and cooperating with each other during food searching. In the resource schedule management subsystem 37, the ant colony optimization algorithm can be used to optimize the scheduling scheme of construction equipment such as asphalt pavement pavers to reduce equipment idle time and improve equipment utilization. The dynamic programming algorithm is a mathematical method for solving optimization problems. It improves computational efficiency by decomposing the problem into subproblems and storing the solutions to the subproblems to avoid redundant calculations. In the resource schedule management subsystem 37, the dynamic programming algorithm can be used to calculate the resource requirements of different construction stages and formulate corresponding resource allocation plans. The genetic algorithm is an optimization algorithm that simulates natural selection and genetic mechanisms. It searches for the optimal solution in the solution space through operations such as selection, crossover, and mutation. In the resource schedule management subsystem 37, genetic algorithms can be used to solve complex resource scheduling problems, such as multi-objective optimization problems, to reduce resource costs while meeting construction needs. The resource schedule management subsystem 37 in the asphalt pavement paver employs various algorithms to optimize the construction process and improve construction efficiency. These algorithms need to be adjusted and optimized according to specific construction conditions in practical applications to ensure their adaptability and effectiveness.

[0115] like Figure 4As shown, the intelligent control system can be further divided into a perception and analysis layer, a platform analysis layer, and an application feedback layer according to the user's level. The perception and analysis layer consists of a sensor network module 12, including a wireless communication module 21, a remote monitoring module 22, and a real-time monitoring subsystem 35. The perception and analysis layer contains various sensors and communication and monitoring modules, which can collect relevant data on the surrounding environment and working status of the asphalt paver in real time. After preliminary processing, this data is then transmitted to the platform analysis layer. The platform analysis layer consists of a central control unit 11, including a fault diagnosis module 23, a quality analysis subsystem 36, and a resource progress management subsystem 37. After the data collected by the perception and analysis layer is input into the platform analysis layer, the central control unit 11 can perform calculations and analysis on the data. The fault diagnosis module 23 filters the collected data, and if the alarm conditions are met, an alarm message will be generated. Similarly, the quality analysis subsystem 36 and the resource progress management subsystem 37 can also analyze data that meets the reception type in real time. After the data analysis is completed, the central control unit 11 will summarize the analysis results, generate control logic according to the algorithm, and send control commands to the application feedback layer. The application feedback layer consists of the actuator module 13, which includes an automatic leveling subsystem 31, a traveling hydraulic subsystem 32, a receiving electrical control subsystem 33, and a transport and fabric distribution subsystem 34. When the application feedback layer receives control commands from the platform analysis layer, the various actuators in the actuator module 13 will operate accordingly. The automatic leveling subsystem 31, the traveling hydraulic subsystem 32, the receiving electrical control subsystem 33, and the transport and fabric distribution subsystem 34 can also independently control the operation of their respective mechanisms.

[0116] Example 2:

[0117] Based on Example 1, this example provides a detailed description of the various structures of the asphalt pavement paver:

[0118] like Figure 5 , Figure 6 As shown, the asphalt pavement paver provided in this embodiment consists of a telescopic screed 1000, a soil compactor 2000, a hopper 3000, a roller 4000, and a base 5000.

[0119] like Figure 7 , Figure 8As shown, the telescopic screed 1000 includes a fixed rod a1101, a connecting rod 1102, a shock-absorbing spring a1103, a hydraulic telescopic rod a1104, a screw slide rail assembly connecting block 1201, a primary telescopic plate 1202, a secondary telescopic plate 1203, and a screw slide rail assembly 1300. The fixed rod a1101 can be connected to the second fixed hole b on the base 5000. The fixed rod a1101 and the connecting rod 1102 are connected by bolts. The primary telescopic plate 1202, the secondary telescopic plate 1203, and the screw slide rail assembly 1300 constitute the main body of the telescopic screed to adapt to roads of different widths. At the same time, the connecting rod 1102, the hydraulic telescopic rod a1104, and the shock-absorbing spring a1103 enable the screed to adjust its vertical height to pave roads of different thicknesses. The screed can also be lifted off the ground when the paver is not in operation. Specifically, the shock-absorbing spring a1103 is sleeved on the outside of the hydraulic telescopic rod a1104. Both the lead screw slide rail assembly connecting block 1201 and the connecting rod 1102 have screw holes, which can be connected to the screw holes on both sides of the hydraulic telescopic rod a1104 via screws and nuts. When the hydraulic telescopic rod a1104 is working, hydraulic oil is injected into the hydraulic cylinder at the upper part of the hydraulic telescopic rod a1104, which in turn pushes or pulls the lead screw slide rail assembly connecting block 1201 in a direction perpendicular to the lead screw slide rail assembly connecting block 1201. The lead screw slide rail assembly connecting block 1201 is fixed to the first-stage telescopic plate 1202 with bolts. The lead screw slide rail assembly 1300 is assembled with the lead screw slide rail assembly connecting block 1201 by an insert method. The lead screw slide rail assembly 1300 is connected to the second-stage telescopic plate 1203 with bolts, thereby realizing the telescopic function.

[0120] like Figure 9 , Figure 10 As shown, the screw and slide rail assembly 1300 includes a slide groove 1301, a movable connecting block 1302, a slide rail screw 1303, a slide rail screw fixing block 1304, a slide rail screw fixing ring 1305, a slide rail screw limiting block 1306, and a screw and slide rail drive motor 1401. The slide rail screw 1303 passes through and is fixed in the movable connecting block 1302, the slide rail screw fixing block 1304, the slide rail screw fixing ring 1305, and the slide rail screw limiting block 1306, and is also locked inside the slide groove 1301. The slide rail screw 1303 is connected to the screw and slide rail drive motor 1401. The secondary telescopic plate 1203 is fixed above the movable connecting block 1302 and assembled inside the primary telescopic plate 1202. The screw and slide rail assembly 1300 is fastened with screws. When the screw and slide rail drive motor 1401 is working, the slide rail screw 1303 starts to rotate. The movable connecting block 1302 can move along the direction of the slide rail screw 1303, thereby driving the secondary telescopic plate 1203 to move relative to the primary telescopic plate 1202, so that the secondary telescopic plate can extend and retract freely.

[0121] like Figure 11 , Figure 12As shown, the rammed earth machine 2000 includes a connecting platform 2101, a motor base 2102, a compaction plate base 2103, a compaction plate 2104, a motor 2201, a shock-absorbing spring b2301, a main hydraulic telescopic rod 2302, a secondary hydraulic telescopic rod 2303, and a shock-absorbing spring c2304. The rammed earth machine 2000 is connected to the rear groove of the base platform 5101 by screws and nuts. The shock-absorbing spring b2301, the main telescopic rod 2302, and the secondary telescopic rod 2303 together form the rammed earth machine's telescopic mechanism. The shock-absorbing structure consists of a shock-absorbing spring b2301 nested with the main hydraulic telescopic rod 2302 and the secondary hydraulic telescopic rod 2303. Both the main hydraulic telescopic rod 2302 and the secondary hydraulic telescopic rod 2303 have threaded holes at their ends, which can be connected to the threaded holes on the connecting platform 2101 and the compaction plate base 2103 via screws and nuts. Hydraulic oil can be injected from the oil injection holes on both sides of the secondary hydraulic telescopic rod 2303 to achieve the telescopic function. This structure allows the paver to be lifted off the ground when not in operation, and the compaction force can be adjusted when in operation. The motor 2201 is connected to the motor base 2102 by bolts. The motor base 2102 is installed at the geometric center of the upper surface of the tamping plate base 2103. The lower half of the motor base 2102 is provided with screw through holes. The upper surface of the tamping plate base 2103 is provided with screw holes, which can be fixedly connected by screws. The tamping plate base 2103 is connected to the tamping plate 2104 by bolts. The shock-absorbing spring c2304 is connected to the tamping plate 2104 by bolts. When the motor 2201 starts, the tamping plate 2104 works accordingly to realize the tamping function.

[0122] like Figure 13 , Figure 14 , Figure 15 , Figure 19As shown, the hopper 3000 includes a guide hopper 3101, a mixing hopper 3102, a heat-insulating hopper 3103, a discharge port 3104, a spiral mixer 3105, a discharge limiter 3106, a discharge limit plate 3107, a discharge limit plate gear 3108, a spiral mixer motor driver 3109, a spiral mixer motor 3110, and a spiral mixer transmission bearing 3111. The support feet of the hopper 3000 are connected to the screw holes distributed in the center above the platform of the base 5000. When the asphalt raw material enters the device from the guide hopper 3101, intelligent control such as mixing, heat preservation, and material control ensures that the asphalt can be discharged uniformly and stably at the discharge port 3104, thereby improving the paving quality. Specifically, the feeding hopper 3101 is welded to the mixing hopper 3102, the mixing hopper 3102 is welded to the insulation hopper 3103, and the spiral agitator 3105 is installed inside the mixing hopper 3102, with both ends fastened by screws. A spiral agitator motor driver 3109 is provided outside the mixing hopper 3102, which can simultaneously drive multiple spiral agitators 3105 to rotate. During feeding, the discharge port 3104 is in a closed state. The discharge port 3104 is located below the insulation hopper 3103, and a discharge limiter 3106 is installed on the discharge port 3104. The discharge limiter plate 3107 and the discharge limiter plate gear 3108 are assembled together. Inside the discharge restrictor 3106, and with the discharge restrictor gears 3108 distributed at both ends of the discharge restrictor 3107, the spiral agitator motor driver 3109 is installed at the center of the back of the outer surface of the mixing hopper 3102 to drive the spiral agitator motor 3110 to rotate. When the spiral agitator motor 3110 rotates, it drives the spiral agitator 3105 to rotate within the mixing hopper 3102. The spiral agitator drive bearing 3111 is equipped with gears and a synchronous belt, which can connect to an adjacent spiral agitator 3105 that is not connected to the spiral agitator motor 3110, thereby realizing the rotation of a pair of spiral agitators 3105. The discharge restrictor 3107 has toothed grooves evenly distributed on both rear sides, and the discharge restrictor gears 3108 have protruding teeth distributed on both sides of the discharge restrictor 3107 and meshing with them. When the two discharge restrictor gears 3108 rotate synchronously in opposite directions, they can drive the discharge restrictor 3107 to extend and retract, thereby achieving discharge restriction. The spiral mixer motor driver 3109 can drive the spiral mixer motor 3110 and the motor located on the upper end of the discharge limiting plate gear 3108 to rotate, thereby realizing the asphalt feeding project.

[0123] like Figure 16As shown, the roller 4000 includes a fixed rod b4101, a shock-absorbing spring d4102, a hydraulic telescopic rod b4103, a screw-driven electric telescopic rod connecting block 4201, a main telescopic roller 4202, a secondary telescopic roller 4203, and a screw-driven electric telescopic rod 4300. The fixed rod b4101 in the roller 4000 is connected to the first fixed hole a on the base 5000 to stabilize the roller. The main telescopic roller 4202, the secondary telescopic roller 4203, and the screw-driven electric telescopic rod 4300 constitute the main body of the telescopic roller. The push rod in the screw-driven electric telescopic rod 4300 is electrically... The bottom of the motor 4301 is connected to the inner bottom of the main telescopic roller 4202. The inner bottom of the secondary telescopic roller 4203 can be connected to the push plate 4308 in the screw-driven electric telescopic rod 4300. When the push rod motor 4301 is working, the push rod active telescopic rod 4304 rotates, driving the push rod fixing ring 4305 to move forward or backward. As a result, the push plate 4308 extends or retracts simultaneously with the secondary telescopic roller 4203, making the compaction width variable. At the same time, the shock-absorbing spring d4102 and the hydraulic telescopic rod b4103 realize the vertical extension and retraction of the roller 4000, making the compaction force changeable. Specifically, the structure of the hydraulic telescopic rod b4103 is as follows: Figure 16 As shown, the hydraulic telescopic rod b4103 has screw holes on both sides, which can be bolted to the fixed rod b4101 and the screw-driven electric telescopic rod connecting block 4201. The shock-absorbing spring d4102 is nested outside the hydraulic telescopic rod b4103. The screw-driven electric telescopic rod connecting block 4201 is bolted to the main telescopic roller 4202, and the secondary telescopic roller 4203 is bolted to the screw-driven electric telescopic rod 4300. When hydraulic oil is injected or withdrawn from the two oil injection holes at the top of the hydraulic telescopic rod b4103, the lower telescopic rod of the hydraulic telescopic rod b4103 extends or retracts accordingly, thereby realizing the left and right extension and retraction of the road roller 4000.

[0124] like Figure 17As shown, the lead screw electric telescopic rod 4300 includes a push rod motor 4301, a push rod fixing frame 4302, a push rod end fixing ring 4303, a push rod active telescopic rod 4304, a push rod fixing ring 4305, a push rod limiting plate 4306, a push rod driven telescopic rod 4307, and a push plate 4308. The push rod motor 4301 is connected to the push rod fixing frame 4302 by bolts evenly distributed at the four corners. When the push rod motor 4301 is energized, it drives the push rod active telescopic rod 4304 to rotate. This causes the push rod fixing ring 4305, the push rod driven telescopic rod 4307, and the push plate 4308 to move forward. Specifically, the front end of the push rod motor 4301 has screw holes, which can be fastened to the push rod fixing frame 4302 by screws. The push rod end fixing ring 4303 is fastened to the push rod fixing frame 4302 by screws. The push rod active telescopic rod 4304 is inserted through the axial opening of the push rod end fixing ring 4303 and the push rod fixing frame 4302, and screwed into the push rod motor 4301 and fixed. The center opening of the push rod fixing ring 4305 can pass through the push rod active telescopic rod 4304, and the push rod driven telescopic rod 4307 can pass through the three evenly distributed limiting holes in the push rod limiting plate 4306. The front end is fastened to the push plate 4308 by screws, and the end end is fastened to the push rod fixing ring 4305 by screws. The push plate 4308 is fixedly connected to the secondary telescopic roller 4203 and nested inside the main telescopic roller 4202 to realize the telescopicity of the road roller 4000.

[0125] like Figure 18As shown, the base 5000 includes a base platform 5101, a platform connecting rod 5102, a platform support rod 5103, an extension frame 5104, an oil tank 5105, a display screen 5106, cameras a 5107a and b 5107b, a base beam 5201, a drive gear 5202, rubber tracks 5203, a gear baffle 5204, a first fixing hole a, and a second fixing hole b. A telescopic screed 1000 is fitted into the second fixing hole b. A soil compactor 2000 is connected to a groove in the base platform 5101. A hopper 3000 is connected to an opening in the base platform 5101. A roller 4000 is fitted into the first fixing hole a, thus forming an asphalt pavement paver. The oil tank 5105 provides diesel fuel to the device, and the display screen 5106 enables intelligent control of the device, allowing for precise parameter adjustment via various buttons on the display screen to meet diverse construction requirements. Specifically, the platform connecting rod 5102, platform support rod 5103, extension frame 5104, base beam 5201, and base platform 5101 are bolted together to ensure stability. The base beam 5201 is welded to the gear baffle 5204, and the drive gear 5202 is installed inside the gear baffle 5204. The drive gear 5202 and the rubber track 5203 are connected by meshing the inner recess of the rubber track 5203 with the convex teeth of the drive gear 5202. The oil tank 5105, display screen 5106, and base platform 5101 are connected by a bayonet. Cameras a 5107a and b 5107b are fixed on the base platform 5101 for monitoring the construction status.

[0126] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, the above description focuses on specific embodiments of this specification. Additionally, the processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0127] The above description is merely a preferred embodiment of the present invention and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. This specification and drawings are merely illustrative examples of the present invention and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the scope of the present invention. Therefore, if these modifications and variations of the present invention fall within the scope of the present invention and its equivalents, this application intends to include these modifications and variations.

Claims

1. An asphalt pavement paver with an intelligent control system, characterized in that, The system includes a base and a retractable screed, a soil compactor, a hopper, and a roller mounted on the base. The base comprises a base platform, a platform connecting rod, a platform support rod, an extension frame, camera a, camera b, a base beam, a drive gear, a rubber track, and a gear baffle. The platform connecting rod, platform support rod, extension frame, and base beam are connected to the base platform. The base beam is connected to the gear baffle. The drive gear is installed inside the gear baffle and meshes with the rubber track. Cameras a and b are mounted on the base platform. The front end of the extension frame has a first fixing hole and a second fixing hole.

2. The asphalt pavement paver according to claim 1, characterized in that, The retractable ironing board includes a fixed rod a, a connecting rod, a shock-absorbing spring a, a hydraulic telescopic rod a, a lead screw slide rail assembly connecting block, a primary telescopic plate, a secondary telescopic plate, and a lead screw slide rail assembly. The fixed rod a is installed on the second fixed hole and is connected to the connecting rod. The shock-absorbing spring a is sleeved on the outside of the hydraulic telescopic rod a. The lead screw slide rail assembly connecting block is connected to the connecting rod through the hydraulic telescopic rod a. The lead screw slide rail assembly connecting block is connected to the primary telescopic plate. The lead screw slide rail assembly and the lead screw slide rail assembly connecting block are embedded and assembled. The lead screw slide rail assembly is connected to the secondary telescopic plate. The lead screw and slide rail assembly includes a slide groove, a movable connecting block, a lead screw, a lead screw fixing block, a lead screw fixing ring, a lead screw limiting block, and a lead screw and slide rail drive motor. The lead screw passes through and is installed in the movable connecting block, the lead screw fixing block, the lead screw fixing ring, and the lead screw limiting block, and is also locked inside the slide groove. The lead screw is connected to the lead screw and slide rail drive motor. A secondary telescopic plate is installed above the movable connecting block and is assembled inside the primary telescopic plate.

3. The asphalt pavement paver according to claim 2, characterized in that, The ramming machine includes a connecting platform, a motor base, a ramming plate base, a ramming plate, a motor, a shock-absorbing spring b, a main hydraulic telescopic rod, a secondary hydraulic telescopic rod, and a shock-absorbing spring c. The shock-absorbing spring b is nested with the main hydraulic telescopic rod and the secondary hydraulic telescopic rod. The ends of the main hydraulic telescopic rod and the secondary hydraulic telescopic rod are respectively connected to the connecting platform and the ramming plate base. The motor is connected to the motor base, which is installed on the upper surface of the ramming plate base. The ramming plate base is connected to the ramming plate, and the shock-absorbing spring c is connected to the ramming plate.

4. The asphalt pavement paver according to claim 3, characterized in that, The hopper includes a guide hopper, a mixing hopper, a heat-insulating hopper, a discharge port, a spiral agitator, a discharge limiter, a discharge limit plate, and a discharge limit plate gear. The guide hopper is connected to the mixing hopper, and the mixing hopper is connected to the heat-insulating hopper. The spiral agitator is installed inside the mixing hopper, and a spiral agitator motor driver is provided outside the mixing hopper to drive the spiral agitator to rotate. The discharge port is located below the heat-insulating hopper, and a discharge limiter is installed on the discharge port. The discharge limit plate and the discharge limit plate gear are assembled inside the discharge limiter, and the discharge limit plate gear is distributed at both ends of the discharge limit plate.

5. The asphalt pavement paver according to claim 4, characterized in that, The roller includes a fixed rod b, a shock-absorbing spring d, a hydraulic telescopic rod b, a screw-electric telescopic rod connecting block, a main telescopic roller, a secondary telescopic roller, and a screw-electric telescopic rod. The fixed rod b is connected to a first fixed hole. The two sides of the hydraulic telescopic rod b are respectively connected to the fixed rod b and the screw-electric telescopic rod connecting block. The shock-absorbing spring d is nested outside the hydraulic telescopic rod b. The screw-electric telescopic rod connecting block is connected to the main telescopic roller, and the secondary telescopic roller is connected to the screw-electric telescopic rod. The lead screw electric telescopic rod includes a push rod motor, a push rod fixing frame, a push rod end fixing ring, a push rod active telescopic rod, a push rod fixing ring, a push rod limiting plate, a push rod driven telescopic rod, and a push plate. The push rod motor is connected to the push rod fixing frame, and the push rod end fixing ring is also connected to the push rod fixing frame. The push rod active telescopic rod passes through the central opening of the push rod end fixing ring and the push rod fixing frame, and is screwed into and fixed by the push rod motor. The central opening of the push rod fixing ring passes through the push rod active telescopic rod, and the push rod driven telescopic rod passes through three evenly distributed limiting holes in the push rod limiting plate. Its front end is connected to the push plate by screws, and its end is connected to the push rod fixing ring by screws. The push plate is connected to the secondary telescopic roller and nested inside the main telescopic roller.

6. An intelligent control system for improving the accuracy of asphalt pavement pavers, employing the asphalt pavement paver as described in claim 5, characterized in that, include: The digital control system is used to collect environmental and construction data in real time, process the collected data, generate control logic and issue execution commands to precisely adjust the actions of the paver. The intelligent monitoring and communication system communicates with the digital control system to enable remote monitoring and control of the paver and to perform fault diagnosis. The intelligent construction assistance system communicates with the digital control system to improve construction accuracy and consistency, optimize construction efficiency, enhance construction quality and safety, and manage and analyze data.

7. The intelligent control system for improving the accuracy of asphalt pavement pavers according to claim 6, characterized in that, The digital control system includes: The central control unit is responsible for receiving data from the sensor network module, preprocessing and analyzing this data, and then generating corresponding control commands according to the preset program and algorithm. The sensor network module communicates with the central control unit and includes various sensors distributed in different parts of the paver. It is used to collect and display the collected data and collect various parameters of the paver in real time during operation. The actuator module communicates with the central control unit to enable the paver to precisely adjust its movements according to the control commands issued by the central control unit.

8. The intelligent control system for improving the accuracy of asphalt pavement pavers according to claim 7, characterized in that, The intelligent monitoring and communication system includes: The wireless communication module supports Wi-Fi and 4G / 5G wireless communication methods, providing a network environment for remote monitoring and control. The remote monitoring module communicates with the digital control system through the wireless communication module to display the real-time operating status of the paver and provide remote control and remote fault diagnosis functions. The fault diagnosis module communicates with the digital control system through the wireless communication module to monitor the paver's operating status in real time based on data collected by the sensor network module, and to automatically identify and diagnose faults that occur during paving operations.

9. The intelligent control system for improving the accuracy of asphalt pavement pavers according to claim 8, characterized in that, The intelligent construction assistance system includes: The automated leveling subsystem includes a telescopic screed and various sensors installed on it, which are used to automatically adjust the paving thickness and slope to improve the smoothness of the road surface. The walking hydraulic subsystem, including drive gears, rubber tracks, and speed sensors, provides walking power during paving operations, enabling the paver to perform paving operations at a preset speed and along a preset route. The receiving electrical control subsystem includes an ultrasonic level gauge, which is used to monitor the level of asphalt mixture in the paver hopper in real time and control the amount of asphalt mixture received. The transport and placement subsystem includes a discharge port, a guide hopper, a mixing hopper, a discharge limiter, and a discharge limit plate. It is responsible for longitudinally transporting asphalt raw materials and laterally spreading them on the road surface to ensure the uniformity of the paving layer. The real-time monitoring subsystem, including visual sensors, cameras, and the BeiDou satellite navigation system, is used to monitor paving operations in real time. The quality analysis subsystem includes multiple sensors distributed in different parts of the paver, which are used to perform real-time analysis on the data collected by the sensor network module and provide construction quality reports and suggestions. The resource progress management subsystem contains a construction plan for real-time tracking of construction progress, providing progress reports and early warnings, intelligently scheduling and optimizing resources, and improving construction efficiency.

10. The intelligent control system for improving the accuracy of asphalt pavement pavers according to claim 9, characterized in that, The sensors include pressure sensors, temperature sensors, vision sensors, ultrasonic thickness sensors, speed sensors, longitudinal acceleration sensors, lateral acceleration sensors, and ultrasonic level gauges. The pressure sensors are located at the bottom of the paver's hopper, the middle and end of the auger mixer, and the front of the screed. The temperature sensors are located at the rear of the paver's screed and distributed above the paver. The vision sensors are located at the front of the base's extended frame, on both sides of the rammer, and at the asphalt outlet. The ultrasonic thickness sensors are located on the paver's screed. The speed sensor is located at the drive gear shaft of the paver; the longitudinal acceleration sensor is located at the center of the upper surface of the connecting block of the screw slide rail assembly of the paver; the transverse acceleration sensor is located at both ends of the upper surface of the first-stage telescopic plate of the paver; and the ultrasonic level gauge is located in the middle of the inner side of the material guide hopper of the paver.

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