6512results about "Roads maintainence" patented technology

The invention relates to the field of highway construction, in particular to an intelligent asphalt pavement rolling control method and system, and the method comprises the steps: deploying machine vision equipment to collect an image of a just-paved asphalt mixture, recognizing the segregation degree in combination with a convolutional neural network, and generating a segregation distribution thermodynamic diagram with geographic coordinates; the road roller is integrated with a positioning sensor, a temperature sensor, a vibration sensor and a speed sensor, relevant parameters are collected, and the real-time compaction degree is calculated. The thermodynamic diagram and the compaction degree are subjected to space-time matching, optimal operation parameters are calculated through a dynamic coupling model on the basis of data such as the segregation degree and the temperature of a target area, the optimal operation parameters are wirelessly sent to a road roller control system to adjust speed and vibration parameters, and a road roller feeds back the new compaction degree after execution to form closed-loop control. The problem that separation and compaction control are disjointed in the prior art is solved, separation information and the compaction process are deeply fused, and underpressure of a separation area and overpressure of a uniform area are avoided.

The invention discloses a semi-rigid asphalt pavement crack depth estimation method, equipment and a medium, and relates to the technical field of road detection. The method comprises the steps of collecting a high-resolution image of a road surface through a mobile detection platform, segmenting a crack region in the high-resolution image by adopting an image segmentation model, and obtaining a binary image of a crack; pixel accumulation, edge detection, skeletonization, skeleton trimming and orthogonal projection are carried out on the crack binary image to extract surface parameters of the crack, and the surface parameters comprise the type, the length, the width and the area; inputting the fracture surface parameters into the fracture depth prediction model, and outputting a fracture depth prediction value; and generating a crack depth grade label according to the depth predicted value, and outputting a corresponding maintenance strategy. According to the method, the crack surface parameters and the pavement structure parameters are combined, the prediction result has good accuracy and consistency through the coupling relation with the depth index, and the method adapts to different crack types and working conditions.

The invention discloses a frozen soil roadbed hot melt settlement laser scanning measurement method and system, and relates to the technical field of measurement, the method comprises the following steps: obtaining gridding surface data, and obtaining an elevation data sequence of each grid point; acquiring an elevation change index of each grid point according to the elevation data sequence of each grid point; acquiring a plurality of grid points adjacent to the ith grid point and taking the plurality of grid points as a plurality of reference grid points of the ith grid point, acquiring each relative difference quantity of the ith grid point, and acquiring a correction proportion of the ith grid point according to the plurality of relative difference quantities of the ith grid point; and obtaining target elevation data of each grid point according to the correction proportion of each grid point and the measured elevation data at the current moment, and forming a measurement result including the gridding surface data according to the target elevation data of each grid point. The method has the advantages of identifying abnormal values, dynamically correcting measurement and improving data reliability.

The invention belongs to the technical field of asphalt pavement repairing, and particularly relates to a local repairing technology of an asphalt pavement, which comprises the following specific contents: detecting a disease range by adopting ground three-dimensional laser scanning or ground penetrating radar, determining a repairing boundary, sampling and detecting the aging degree, the moisture content and the grading type of the asphalt of the original pavement, and determining the repairing quality of the asphalt pavement. According to the method, the bonding strength of the repairing material and the asphalt layer of the original pavement is enhanced by heating and activating the interface of the original pavement and emulsifying the asphalt bonding layer, and matching the repairing material with the shrinkage coefficient of the original pavement and reinforcing and compacting the edge, so that the condition that the repaired position is cracked, loosened and damaged in a short time is avoided; warm-mixed asphalt is adopted, the heating temperature is reduced by 40-60 DEG C, cold-mixed emulsified asphalt is popularized, and the asphalt does not need to be heated, so that release of a large amount of volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs) and dust is effectively avoided, and air pollution is avoided.

The invention relates to the field of intelligent transportation systems, discloses an intelligent highway maintenance system and method, and aims to solve the fundamental defects that in the prior art, the data acquisition dimension is single, the maintenance decision depends on artificial experience, and prospective prediction is lacked. The method comprises the following steps: acquiring multi-modal dynamic sensing data covering a whole road domain; constructing and updating a four-dimensional space-time digital twinborn model in real time; driving the causal graph neural network model to perform structure health state prediction and diagnosis; generating an active maintenance instruction through a multi-objective optimization engine; and the autonomous maintenance execution unit is dispatched to complete unmanned closed-loop operation. According to the method and the system, fundamental transformation of road maintenance from passive response to active prevention, from artificial experience to intelligent decision making and from discrete operation to closed-loop automation is realized, and the maintenance efficiency, the safety and the health level of the whole life cycle of the road are remarkably improved.

A slip form paving machine includes a machine frame, a plurality of ground engaging wheels or tracks, and front and rear height adjustable lifting columns supporting the machine frame from the ground engaging wheels or tracks, the lifting columns being adjustable to adjust a longitudinal inclination of the machine frame in a paving direction. A slip form mold is supported from the machine frame for molding a mass of concrete into a formed not yet hardened concrete slab as the paving machine moves forward in the paving direction. An oscillating beam is supported from the machine frame behind the slip form mold for engaging and oscillating transversely to the paving direction upon an upper surface of the formed not yet hardened concrete slab to smooth the upper surface. A roll size sensor is configured to detect a size of a roll of not yet hardened concrete created in front of the oscillating beam.

The invention relates to the technical field of road defect detection, in particular to a road defect detection method and system based on three-dimensional perception, and the method comprises the steps: synchronously collecting two-dimensional image data and three-dimensional point cloud data of a target road surface on a mobile carrier through an integrated detection system; fusing the position information of the GNSS integrated by the detection system and the attitude information of the inertial measurement unit, calculating the time sequence pose data of the detection system in the acquisition process, and generating a target pavement three-dimensional point cloud model with absolute space coordinates; and performing spatial registration on the two-dimensional image data and the three-dimensional point cloud model of the target pavement, and based on the fused two-dimensional and three-dimensional data, identifying and quantifying geometric and texture information of pavement diseases, and generating a disease distribution diagram containing disease positions, types and size parameters. According to the invention, through deep fusion of two-dimensional and three-dimensional data, accurate identification and quantification of pavement diseases are realized, and a CAD-format disease distribution diagram which can be directly delivered can be automatically generated.

The invention belongs to the technical field of pavement repairing, and discloses a material mixing and grouting integrated cement concrete pavement repairing device which comprises a frame, an adjusting assembly is arranged on the front face of the frame, a vibration assembly is arranged at the bottom of the adjusting assembly, and the vibration assembly comprises a fixing rod. According to the device, through cooperation of structures such as the vibration assembly and the supporting wheels, a knocking hammer of the vibration assembly is driven to knock a grouting area range in the moving process, mortar air injected into the device can be discharged through knocking vibration, and the device is convenient to use. According to the mortar filling device, mortar can permeate into gaps, filling uniformity is guaranteed, the vibration effect can be achieved through knocking, air of the mortar can be effectively emptied, meanwhile, the mortar can be prevented from overflowing, the flatness of the surface after the gaps are filled with the mortar can be guaranteed, and meanwhile grouting uniformity can be guaranteed.

A road construction machine in the form of a road paver or a feeder vehicle for conveying paving material to a road paver, the road construction machine being self-propelled and having a primary drive source, a hopper, at least one working unit and at least one electric consumer for heating the working unit, the road construction machine having an energy supply system with at least one electrical energy storage which can be charged by means of electric current generated outside the road construction machine and is present on the road construction machine as an internal power source for direct current supply to the electric consumer. Furthermore, the disclosure relates to the use of such an energy storage for direct current supply to an electric consumer of a road construction machine.

The invention discloses a road ballasting grouting device based on a ballasting plate-elastic piece combined structure and a construction technology thereof, the road ballasting grouting device comprises a grouting vehicle, grouting equipment and a ballasting structure, the grouting equipment and the ballasting structure are respectively arranged in front of and behind the grouting vehicle, and the whole device can be conveniently moved to a construction site; the ballasting structure comprises a translation mechanism, a hydraulic mechanism, a ballasting plate and an elastic piece, one end of the translation mechanism horizontally extends outwards to be connected with the ballasting plate and drives the ballasting plate to horizontally move, the elastic piece is arranged below the ballasting plate and is in direct contact with the road surface, and the ballasting plate-elastic piece structure is hung behind the grouting vehicle.

The invention discloses a large-area concrete pouring vibrating and leveling device and a using method, and belongs to the field of concrete pouring construction. Comprising a walking and stabilizing system, accurate positioning is achieved through four-wheel independent driving, and a hydraulic supporting column and a sliding rail weight box cooperate to dynamically balance overturning moment; the multi-degree-of-freedom telescopic arm system drives an end effector to perform three-dimensional positioning through a multi-stage hydraulic telescopic sleeve and covers a large-area operation area; the intelligent vibrating-leveling execution system and the modularized vibrating system are adopted, eight groups of high-frequency vibrating rods are carried on a main / expansion plate, an ultrasonic sensor is embedded in a rod body protection cylinder to generate a compactness cloud picture in real time, and a hose is driven to integrate a strain sensor to invert the slump; the self-adaptive leveling system and the laser grid scanner construct a three-dimensional elevation model, and the hydraulic elevation regulator realizes + / -0.1 degree grade gradient control. According to the method, traditional layering limitation is broken through, efficiency is improved, porosity and flatness errors are reduced, and manual safety risks are thoroughly eliminated.

The invention relates to a cement pavement microcrack homogenization treatment method and system, and relates to the technical field of pavement structure repairing, and the method comprises the following steps: collecting pavement image information; obtaining a crack pavement image based on the pavement image information and a preset crack feature; obtaining a pavement construction specification through the crack pavement image; collecting sound wave detection information corresponding to the crack pavement image; interval water injection is conducted according to the sound wave detection information and the preset detection flow to obtain a variable water level, and crack parameters are obtained in combination with the pavement construction specification, the detection flow and the variable water level; and reinforcement parameters and micro-crack parameters are obtained through the crack parameters, and the reinforcement parameters and the micro-crack parameters are uploaded and displayed. The method has the effect of prolonging the service life of the repaired pavement.

The invention relates to the technical field of road construction equipment, and discloses municipal road construction pavement leveling equipment based on a pressure adjustment leveling roller structure, the municipal road construction pavement leveling equipment comprises a support frame and a leveling mechanism mounted at the bottom of the support frame, and an auger roller is rotatably mounted at the bottom of the front end of the support frame; the supporting frame is provided with a material collecting mechanism for recycling concrete, a material supplementing mechanism and a second driving motor, and the bottom of the supporting frame is fixedly connected with a concave frame. Excessive concrete is collected towards the middle of the pavement through mutual cooperation of the auger roller, the material collecting mechanism and the material supplementing mechanism, the collected concrete is conveyed into the storage hopper to be collected, and the situation that the compaction degree of pavement flattening is inconsistent due to the fact that the concrete collected in the middle of the pavement is too much is avoided; and the opening and closing assembly can automatically fill the concrete stored in the storage hopper to the road surface according to the concave condition of the road surface, and the leveling effect on the road surface is improved.

The utility model relates to the technical field of road and bridge detection, in particular to an improved pavement crack depth measurement device for road and bridge detection, which comprises a frame, a mounting plate is fixed on the surface of the frame, a measuring instrument is fixed at the top of the mounting plate, self-locking universal wheels are fixed at the bottom of the frame, and the self-locking universal wheels are fixed at the bottom of the frame. A multidirectional adjusting mechanism is mounted at the bottom of the mounting plate, a bidirectional adjusting mechanism is arranged on the surface of the multidirectional adjusting mechanism, an independent adjusting mechanism is arranged on the surface of the bidirectional adjusting mechanism, a transducer is arranged on the surface of the independent adjusting mechanism, and a controller is fixed on the surface of the mounting plate; the multi-direction adjusting mechanism comprises an extending block, the extending block is fixed to the bottom of the mounting plate, and an electric push rod is fixed to the surface of the extending block. High-precision measurement of the crack depth is achieved through cooperative work of the multi-directional adjusting mechanism, the bidirectional adjusting mechanism and the independent adjusting mechanism, and the problems that a transducer of a traditional device is inconvenient to adjust, and the device needs to be moved frequently are solved.

The invention relates to the technical field of highway engineering safety monitoring, in particular to a highway subgrade three-dimensional deformation monitoring system based on unmanned aerial vehicle oblique photography, and the system comprises an unmanned aerial vehicle oblique photography module which adopts a five-lens synchronous shooting strategy to realize the omni-directional coverage of a subgrade; the three-dimensional point cloud generation engine generates a high-precision three-dimensional point cloud model through feature extraction, registration and triangulation strategies; the deformation field analysis platform models a roadbed surface into a parameterized Riemannian manifold based on a differential geometry theory, captures deformation dynamic characteristics through multi-scale curvature flow analysis, and identifies potential risks by using topological evolution characteristics of deformation singular points; and the risk evaluator evaluates the risk level based on the singular point density, the change rate and the topological stability and generates early warning information. According to the invention, millimeter-level accurate monitoring of roadbed deformation is realized, various deformation modes from micro-cracks to large-scale settlement can be captured, the potential landslide risk is early warned 30-45 days in advance, and the false alarm rate is significantly reduced.

The invention discloses a paver starting vibration system and a control method, and relates to the technical field of road construction machinery, the control method comprises the following steps: starting a starting stage automatic adjustment mode, setting initial operation parameters, and collecting an actual rotation speed in real time; based on the actual rotating speed, establishing a linear proportional control relation for the running speed, and dynamically adjusting the running speed; and the dynamic adjustment process is continuously carried out, and when specific conditions are met, the mode is automatically switched to the normal mode. The intelligent control that the paving speed is restrained by the vibrating rotating speed is achieved, and the technical problems that in the asphalt paving starting stage, due to the fact that the resistance of the vibrating beam is increased, the actual rotating speed is insufficient, and due to the fact that the vibrating rotating speed is not matched with the paving speed, the pavement compactness is poor, and the flatness is low are solved.

The embodiment of the invention discloses a construction quality control method and device for a high-speed hydraulic rammer compactor and a medium, and relates to the technical field of high-speed hydraulic rammer compactors. The method comprises the steps that through a plurality of sensors arranged on the high-speed hydraulic rammer compactor, a plurality of ramming acceleration signals corresponding to each ramming point in the point ramming process are collected, on the basis of the multiple tamping acceleration signals, the point tamping compaction state corresponding to each tamping point is determined; determining supplementary ramming areas, performing reinforcement in each supplementary ramming area according to a preset ramming strategy, and determining a real-time compaction index corresponding to the first ramming point; and when the real-time compaction index does not meet the preset index threshold value, the tamping strategy is adjusted according to the preset adjustment step length, the adjusted tamping strategy is determined, the supplementary tamping area is reinforced according to the adjusted tamping strategy, and the dynamic matching between the reinforcing parameters and the specific soil state is ensured, so that the tamping effect is improved. And the uniformity and reliability of the reinforcing quality are fundamentally guaranteed, and the problem that under-compaction and over-compaction coexist is effectively avoided.

The invention discloses a pavement crack rapid repairing method and system, and the method comprises the steps: obtaining multi-source data of a target pavement through a multi-source device, and carrying out the preprocessing of the multi-source data; wherein the multi-source data comprises a target road surface image and target road surface point cloud data; outputting crack features of the target pavement according to the preprocessed target pavement image and the target pavement point cloud data; wherein the crack characteristics comprise the crack length, the crack width, the crack depth, the crack trend, the crack branch number and the crack position; generating a pavement crack repairing scheme based on the crack characteristics; wherein the repairing scheme comprises a repairing material, a repairing mode and repairing process parameters; according to the crack position and the repairing scheme, a repairing track of repairing equipment is determined; and according to the repairing track and the repairing scheme, the repairing equipment is controlled to move to the target position to quickly and accurately repair the pavement crack, so that the repairing efficiency is improved, the cost is reduced, and the repairing quality is ensured.

The invention relates to the technical field of macadam paving, in particular to equipment and a method for quickly paving macadam on a polyurethane pavement, a discharge port is formed in the lower end of a distribution bin, a gap-adjustable baffle is arranged on the outer side of the discharge port, and a rotating roller rotationally mounted through a bearing is arranged at the lower end of a lower end port of the discharge port; the device has the beneficial effects that by arranging the packing auger with the rotary stirring function, full mixing and stirring of gravel raw materials are achieved, meanwhile, the purpose of adjusting the angle of the baffle is achieved through adjustment of a pneumatic telescopic rod and rotary installation of the baffle, the device is simple in structure, the practicability is high, and the device is suitable for popularization and application. Meanwhile, the purpose of cleaning the gap groove is achieved through the rotating roller which continuously rotates, broken stones are prevented from being clamped in the gap, and the laying quality and the laying thickness uniformity are improved.

The invention relates to a road construction machine having a controller 27 which is configured such that control command signals are generated for drives and actuators 8, 9, 16, 20A, 20B assigned to the wheels 4, 5, 6, 7 and / or the milling / mixing roller 18. Additionally provided are: a human-machine interface 26 that interacts with the controller 27 and a memory device 30that interacts with the controller as well as a state monitoring device 32 that interacts with the controller, which monitoring device detects an operating state or operating mode of the drives and actuators. The road construction machine is characterized in that a plurality of instruction data sets is stored in the memory device, said data sets each containing data for an instruction to be visualized using the human-machine interface. The controller provides a learning mode comprising a plurality of lessons for adjusting the position of the wheels and / or the height of the milling / mixing roller and is configured such that, depending on an operating state or operating mode of the drives and actuators detected by the state monitoring device, a selection of a specific data set is made from the instruction data sets stored in the memory device, and the instruction corresponding to the selected instruction data set is visualized using the human-machine interface. In addition, depending on the command entered with the human-machine interface after the visualization of the instruction, the controller generates for the drives and actuators the control command signals corresponding to the command entered, so that the wheels and / or milling / mixing roller move.

The invention provides a pavement flatness control system and method, electronic equipment and a storage medium, the system is suitable for a paver, and the system comprises a sensor module used for transmitting the collected height value, slope value and fluctuation change value of a pavement to a central control module; the central control module is used for acquiring a first difference value between the height value and the slope value of the road surface and a preset paving thickness reference and a second difference value between the fluctuation change value and a preset flatness threshold value, acquiring a flatness deviation value based on the first difference value and the second difference value, and generating a regulation and control instruction based on the flatness deviation value; and the execution module is used for adjusting parameters of the paver according to the received regulation and control instruction so as to control the flatness of the pavement. According to the paver, the real-time data of the pavement are collected in real time through the sensor module, the parameters of the paver are adjusted in combination with the central control module and the execution module, full-automatic and high-response pavement flatness control is achieved, the construction quality and efficiency are improved, and the harsh standard of pavement engineering is met.

The invention relates to the technical field of road detection, in particular to a multi-dimensional road disease detection method and system based on a ground penetrating radar. The method comprises the following steps: acquiring original ground penetrating radar data, performing DC component removal, gain adjustment and background denoising on the original ground penetrating radar data, positioning a suspected disease area and defining the suspected disease area as a disease entity; extracting a time domain feature, a frequency domain feature and a spatial context feature of each disease entity in parallel to form a multi-dimensional feature vector; constructing a road disease knowledge graph according to the multi-dimensional feature vectors, and distributing an initial weight for each graph relation; and performing node matching operation according to the multi-dimensional feature vector and a knowledge graph, performing logical reasoning according to a graph relation path, fusing similarity and reasoning confidence, and outputting a diagnosis tag signal and a confidence signal. According to the method, the positioning accuracy of the suspected disease area is improved, comprehensive utilization of multi-dimensional information is realized, and a visual causal link is provided for diagnosis.

The invention provides a road detection vehicle pavement disease detection method and system based on multi-sensor fusion, and relates to the technical field of road engineering detection, and the method comprises the steps: 1, configuring at least one two-dimensional image collection unit and at least one three-dimensional image collection unit on a detection vehicle to obtain a configuration result; 2, according to the configuration result, in the driving process of the detection vehicle, a geometric reference area used for multi-source data space alignment is established based on lane marking lines in a to-be-detected road surface area; and step 3, performing structured division on the geometric reference area to obtain regularly distributed detection areas, and calculating spatial geometric feature changes generated by vehicle composite motion in the detection areas based on distribution features of the detection areas in combination with translational motion and rotary composite motion states existing in the driving process of the detection vehicle so as to obtain the spatial geometric feature changes of the detection areas. And obtaining a rigid body space composite kinematics characteristic resolving result of the detection area. According to the invention, efficient, accurate and full-dimensional detection of pavement diseases is realized.

A glass powder surface gradient activation-asphalt interface bonding enhancement technology is created for the first time, and the industry bottleneck that the compatibility of waste glass and asphalt is poor is broken through. The core of the method comprises the following steps: 1, an original pretreatment process: carrying out three-stage crushing, wet magnetic separation (the magnetic field intensity is 1.2 T), plasma etching (the ratio of Ar to O2 is 4: 1, and the power is 800W) and controllable ball milling (zirconium oxide balls are used for ball milling) on waste glass; according to interface molecular engineering, a bifunctional silane coupling agent (KH-792: gamma-aminoethyl aminopropyl trimethoxy silane) and titanate (NDZ-201) are compounded with a modifying agent (the mass ratio is 3: 1), and a-Si-O-Ti-cross-linked network 3 is constructed on the surface of the glass powder through in-situ hydrolytic condensation. According to mixture collaborative design, mineral powder is replaced by 35-55% of activated glass powder, and the particle size ratio of the activated glass powder to the mineral powder is 1: 2, D90 is smaller than or equal to 20 [mu] m < 2 >, D90 is smaller than or equal to 20 [mu] m < 2 >, and D90 is smaller than or equal to 20 [mu] m < 2 >. The technical effect of forming a core-shell structure reinforced phase in the SBS modified asphalt is as follows: the dynamic stability reaches 5032 + / -210 times / mm (JTGE20-2011T0719), and compared with the traditional mixture, the water sensitivity (TSR) is improved by 79.7% from 81.3% to 96.5%.

The invention relates to the technical field of recycling of recycled asphalt pavement materials, in particular to an intelligent spraying method and system for a regenerant. The method comprises the following steps: detecting the actual penetration depth of a regenerant in mixture particles, the radius of the mixture particles and the real-time temperature of the mixture in real time; calculating a penetration depth ratio according to the actual penetration depth and the mixture particle radius; determining the spraying sub-stage of the current spraying in the spraying process according to the penetration depth ratio; and adjusting the spraying amount and temperature of spraying equipment according to the real-time temperature of the mixture based on the spraying sub-stage. The problems that in the prior art, when a recycled asphalt pavement material is regenerated, the surface layer of the material can rapidly adsorb a regenerant to form a compact saturated layer, so that the regenerant is prevented from further permeating into particles, then core aged asphalt is not effectively softened, and performance recovery is insufficient are solved. And the regeneration performance of the recycled asphalt pavement material is improved.

The invention relates to an intelligent regulation and control method and system for a pavement asphalt mixture paving temperature field, computer equipment and a computer readable storage medium. The method comprises the steps that an infrared temperature matrix, internal temperature gradient data and environment and equipment operation parameters of a paving area are collected; and based on the temperature gradient data, carrying out compensation correction on the shielding area in the infrared temperature matrix. And fusing the corrected surface temperature matrix with the internal temperature gradient data to form a three-dimensional temperature field tensor. And inputting the tensor into the prediction model, and outputting future temperature field prediction data in combination with environment and equipment parameters. And generating a hierarchical control instruction set according to the local temperature difference, the temperature change slope and the lowest temperature threshold in the prediction data, and distributing the hierarchical control instruction set to a corresponding execution system. And acquiring actual temperature data after instruction execution, calculating errors and dynamically updating prediction model parameters. The paving uniformity, compactness and long-term durability of the asphalt pavement are improved.

The invention relates to the technical field of embankment reinforcing and widening, and provides an embankment widening construction method based on biomineralization and reinforcement cooperation. The microcosmic cementation effect of calcium carbonate precipitation in the inclusion is induced by the enzyme and is combined with the macroscopic constraint of the geogrid, so that a friction-cementation composite interface is formed, and the shear resistance and impermeability of the new and old roadbed combined surface are greatly improved. Meanwhile, the synergistic enhancement transition area serves as a rigidity coordination layer, loads can be effectively homogenized, differential deformation can be effectively absorbed, and therefore differential settlement is restrained, and reflection cracks are prevented. According to the method, the microcosmic cementation strengthening capacity of enzyme-induced calcium carbonate precipitation and the macroscopic reinforcement restraining capacity of the geotechnical reinforcement material are subjected to space coupling and function cooperation, the weak area of the widened embankment is fundamentally improved, and the integrity and long-term stability of the widened embankment are remarkably improved.

The invention belongs to the technical field of engineering machinery intelligence and construction quality detection, and provides an intelligent compaction degree detection system and method integrated on a road roller. The detection system comprises a multi-mode sensing unit which comprises a vibration sensing module, a machine vision module, an inertia measurement positioning module and a flatness detection module; the detection method comprises the following steps: S1, synchronously collecting data; s2, vibration signal processing and compaction index calculation; s3, image analysis and apparent feature extraction; s4, a multi-source data fusion and machine learning model; s5, positioning and drawing; in conclusion, the invention provides the intelligent compaction degree detection system and method integrated on the road roller. The method is reasonable in design and simple to operate, can realize real-time, comprehensive, lossless and high-precision detection of the compaction degree, and can evaluate the construction apparent quality at the same time, so that the method is suitable for industrial popularization.

The utility model discloses a movable inspection vehicle for bridge expansion joint disease detection, which comprises a base assembly, a monitoring assembly, a control assembly and a spray head assembly, the upper end of the base assembly is fixedly connected with the monitoring assembly, the upper end of the monitoring assembly is fixedly connected with the control assembly, the monitoring assembly is also internally fixedly connected with the spray head assembly, and the spray head assembly is fixedly connected with the base assembly. The device is characterized by further comprising a base assembly; the left end and the right end of the bottom plate are rotationally connected with the rotating plate; a first threaded groove is formed in the rotating plate; the first thread groove is further formed in the lower end of the fixing frame; the upper end of the fixing frame is fixedly connected with the lower end of the damping air bag; and by arranging the spray head assembly capable of automatically spraying and marking the disease position, when the device detects the disease position, manual marking is not needed, automatic spraying and marking can be achieved, and convenience is brought to automatic spraying and marking.

The invention discloses a pavement maintenance system and detection method based on an unmanned aerial vehicle, and belongs to the technical field of highway maintenance, and the method comprises the following steps: obtaining a pavement image and three-dimensional point cloud data of a target road section based on a main survey machine; screening a road surface suspicious region set in the target road section based on the road surface image and the three-dimensional point cloud data acquired by the main surveying machine; planning a re-exploration path based on the road surface suspicious region set; the method comprises the following steps: acquiring an optical image, a thermal infrared image and three-dimensional point cloud data of a road surface suspicious region set from a surveying machine; and performing defect verification on the road surface suspicious region set based on the optical image, the thermal infrared image and the three-dimensional point cloud data acquired from the surveying machine. The technical problems that a traditional road surface detection mode is low in detection efficiency, needs to close a lane and hinders traffic are solved, and the technical effect of low-cost, high-precision and rapid road surface detection is achieved.