196 results about "Traffic engineering" patented technology

The invention discloses a traffic network toughness diagnosis method under flood disasters based on a space-time diagram neural network, and relates to the crossing field of traffic engineering and artificial intelligence. The method comprises the following steps: collecting traffic topology, flood monitoring and traffic flow data, and carrying out space-time alignment; a flood coupling dynamic space-time diagram is constructed, a water depth-traffic capacity response mechanism is introduced, and real-time mapping from a disaster physical state to a network topology is realized by utilizing an attenuation function meeting physical monotonicity constraint and dynamically updating an edge weight of a diagram structure according to real-time water depth; inputting the dynamic graph into a pre-trained space-time graph neural network model, extracting space-time evolution characteristics and outputting a toughness diagnosis result; model training adopts a toughness label generated based on an anti-fact baseline to carry out supervised learning, and introduces a physical constraint loss function. According to the method, the problems of decoupling of disaster features and graph structures and unavailability of toughness labels in the prior art are solved, and the physical consistency and accuracy of diagnosis are improved.

The invention relates to the technical field of visual quality detection, in particular to a traffic engineering quality detection method and system based on machine vision, and the method comprises the following steps: calling a vehicle-mounted camera to collect a video stream and intercept a key frame, carrying out the motion deblurring of the key frame to generate a basic image, extracting high-frequency detail features through a first convolution kernel, and carrying out the recognition of the high-frequency detail features; extracting low-frequency structural features by using down-sampling and a second convolution kernel, splicing the low-frequency features after up-sampling the low-frequency features with the high-frequency features, calculating weights based on channel response intensity and generating multi-scale features, mapping the features into a defect probability matrix and calculating a dynamic threshold, screening regions with numerical values greater than the dynamic threshold as candidate connected domains, and extracting the candidate connected domains from the candidate connected domains; and extracting geometric parameters of the connected domain, comparing the geometric parameters with a standard disease form library, and determining disease categories. According to the method, the problem that fixed threshold segmentation cannot adapt to a complex environment is solved by eliminating motion blur, fusing high and low frequency features and combining dynamic threshold judgment and morphological parameter comparison, and the traffic facility disease detection precision and efficiency are greatly improved.

The invention discloses a traffic-electric power fusion network bearing capacity analysis method based on a double-layer model and multi-software joint simulation, and relates to the technical field of traffic engineering and electric power engineering crossing. According to the technical scheme, an upper-layer system optimization-lower-layer operation simulation double-layer model normal form is introduced, the upper layer aims at maximizing the total bearing capacity of the traffic-electric power fusion network, the lower layer constructs a real-time interaction channel through a TraCI interface of SUMO and a TCP / IP tool box of Matlab, and dynamic coupling simulation of the two networks is achieved; and solving the model by adopting a Bayesian optimization algorithm, and verifying the precision of the model through actual scene data in combination with a three-level evaluation index system covering traffic, electric power and fusion collaborative dimensions. The problems that a traditional method is insufficient in evaluation precision and poor in collaboration are solved, precise evaluation of the bearing capacity of the fusion network is achieved, technical support can be directly provided for charging facility layout and two-network collaborative scheduling in highways and other scenes, and the engineering application value is remarkable.

Provided in the embodiments of the present disclosure are a route selection method, a storage medium, an electronic apparatus, and a computer program product. The method comprises: a controller determining a timeslot cross entry of each sub-burst of a target service flow, and sending a first announcement message to an ingress node of a timeslot queuing and forwarding domain, such that the ingress node constructs a first forwarding entry on the basis of the first announcement message. The first announcement message comprises timeslot cross entries, wherein each timeslot cross entry comprises an ideal inbound timeslot and an outbound timeslot stack, the ideal inbound timeslot is an ideal inbound timeslot of each sub-burst at the ingress node of the timeslot queuing and forwarding domain, and the outbound timeslot stack comprises an outbound timeslot of each node of a traffic engineering path corresponding to each sub-burst.

A network device for capability-based autonomous SAN traffic engineering is provided. The network device includes one or more ingress points configured to receive one or more packets from a first network node, a first set of buffers configured to store packets associated with a first group of network nodes, and a packet processing logic configured to determine a communication speed of the first network node over a first channel, wherein the packet processing logic is configured to assign the first network node to a first group nodes of the plurality of groups of network nodes, and store the one or more packets from the first network node in the first set of buffers.

The invention discloses a self-adaptive traffic signal control method and system based on multi-agent reinforcement learning, and relates to the technical field of intelligent traffic and traffic signal control. According to the method, historical and real-time traffic flow characteristics are fused, and control actions of phase sequence selection and green light duration adjustment are output under a centralized training and distributed execution framework; engineering constraints such as phase sequence legitimacy, pedestrian emptying and yellow light / full red light are ensured through the security constraint layer; an urban road network is divided into a plurality of partitions, multiple agents in the partitions are subjected to collaborative optimization and generate partition-level abstracts, and an urban-level coordination layer issues trunk corridor consistency and partition boundary constraints based on the abstracts, so that the traffic efficiency in the whole city range is improved. The method solves the problem that in the prior art, systematized consideration and balance cannot be achieved in four key dimensions of effectiveness of regional cooperation, real-time response capability, robustness of dealing with disturbance and strict compliance with traffic engineering safety constraints.

The utility model relates to the technical field of rail traffic engineering, in particular to a comprehensive grounding structure of a city railway ballast bed, which comprises a longitudinal grounding steel bar, a transverse grounding steel bar and a comprehensive grounding steel bar mesh, the comprehensive grounding reinforcing mesh is embedded in the bottom of each roadbed slab, and the comprehensive grounding reinforcing meshes at intervals are communicated through grounding reinforcing steel bars every other roadbed slab; a plurality of roadbed slabs are used as a grounding unit at a certain distance, the grounding units are not communicated with one another, the roadbed slabs in one grounding unit are communicated with one another through connecting terminals, and the connecting terminals are connected with weak current side reserved terminals on the roadbed slabs. The utility model has the advantages that the rail structure height of the urban railway shield tunnel is reduced, the concrete consumption is reduced, the construction procedures are reduced, and the comprehensive grounding method is simplified; and the method has good economical efficiency.

This invention relates to the field of traffic engineering construction safety technology, specifically a safety early warning device for use at traffic engineering construction sites. The device includes a cabinet and a hydraulic lifting vehicle detachably connected to the bottom of the cabinet. A transmission mechanism is installed on the rear wall of the cabinet. The hydraulic lifting vehicle enables overall movement and height adjustment. In conjunction with the bevel gear meshing of the transmission mechanism, it drives the camera and wind sensor to flexibly adjust the monitoring angle, eliminating blind spots and replacing manual inspections for 24 / 7 active monitoring. The cabinet integrates control, power supply, and communication modules, electrically linking with sensing and early warning components to achieve real-time data analysis, audible and visual alarms, and synchronized early warning on the display screen. This solves the problems of individual devices not working together and information transmission delays, forming a closed-loop process of hazard monitoring, early warning, and response.

The application provides a linear infrastructure path generation method of a structure evolvable energy field under multi-agent conflict, belongs to the cross technical field of civil construction engineering, traffic engineering and intelligent decision, and the method comprises the following steps: S1. multi-agent strategy game modeling and parameter solving; S2. structure evolvable energy field construction; S3. three-dimensional elastic band modeling and constraint force application; S4. multi-stage evolution convergence and three-dimensional linear path generation. The application aims at the technical pain points in the existing linear infrastructure planning, such as strategy-physical-geometric fragmentation, energy field static rigidity, field fragmentation and the need for a large number of post-corrections, and realizes the deep integration of society-physical-geometric by constructing the structure evolvable energy field and the multi-stage collaborative evolution mechanism, so that the optimal linearity naturally emerges, the planning cost is reduced, the decision efficiency is improved, and a unified solution is provided for the linear infrastructure planning under complex scenes.

1. Name of the designed product: guide board (traffic engineering). 2. Use of the designed product: the designed product is used to provide road information. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention belongs to the technical field of new energy power generation and traffic engineering, and provides a foldable telescopic photovoltaic power generation device based on traffic flow sensing, which comprises a traffic flow sensing module, an upper computer, a controller, a main stand column supporting structure, a driving mechanism and a photovoltaic power generation assembly, the traffic flow sensing module is arranged in an upstream area of a photovoltaic area road, and the traffic flow sensing module and the upper computer carry out data transmission through a wireless communication network; the upper computer and the controller carry out data transmission through a wireless communication network; the controller is connected with the driving mechanism through a cable; the driving mechanism is installed on the main stand column supporting structure. The photovoltaic power generation assembly is installed on the top of the main stand column supporting structure through a photovoltaic support. By dynamically adjusting the state of the photovoltaic panel, vehicle shielding is thoroughly eliminated, the power generation efficiency is greatly improved, meanwhile, all-weather traffic safety of the road is ensured, and intelligent cooperation and benefit maximization of power generation and traffic are achieved.

The invention discloses a rail transit engineering construction data four-dimensional display and full-life-cycle tracing method, which belongs to the field of rail transit engineering construction, and comprises the steps of direct one-key uploading of engineering site construction daily reports, automatic analysis of big data, data sharing with a BIM model, realization of four-dimensional dynamic demonstration of construction information, and full-life-cycle quality traceability. The intelligent, humanized and efficient file generation assists construction participants such as construction units to efficiently manage the rail transit project, can realize efficient integration of offline data and online digitization, greatly simplifies a construction information digitization path, is convenient for constructors to operate, enriches use scenes of the construction participants such as the construction units, has good economic and social benefits, and is suitable for popularization and application. The application prospect is wide.

The invention relates to the technical field of traffic engineering and intelligent traffic systems, in particular to a traditional car-following model parameter calibration method and system based on a variational auto-encoder. Comprising the following steps: S1, acquiring vehicle following trajectory data including basic time sequence information such as speed, acceleration and vehicle spacing; s2, carrying out preprocessing and sample construction on original data, segmenting a track, and forming a training and verification data set; s3, constructing a calibration model based on a variational auto-encoder, wherein the model is composed of an encoder based on a cross attention mechanism, a parameter generator and a differentiable car-following model module; and S4, training the model by adopting a joint optimization method of reconstruction loss, KL divergence loss and prediction loss. And S5, inputting to-be-calibrated data into the trained model, outputting time-varying car-following model parameters by a parameter generator, and constructing a calibration process through a differentiable car-following model to realize high-precision fitting of an actual track. The method has the advantages of high calibration precision, excellent efficiency and physical interpretability of parameter results.

The utility model provides a traffic engineering road bridge verticality detection device, which relates to the technical field of road bridge detection and comprises a base, a detection mechanism is arranged above the base and comprises a connecting box, and the bottom surface of the connecting box is fixedly connected with the upper surface of the base. A plurality of first air springs and a plurality of first dampers are fixedly mounted on the upper surface of the base, a placing frame is fixedly mounted at the top ends of the first air springs and the telescopic ends of the first dampers jointly, a connecting frame is fixedly mounted on the inner bottom wall of the placing frame, and a plumb bob body is fixedly mounted on the inner top wall of the connecting frame. A plurality of second air springs and a plurality of second dampers are fixedly installed on the inner bottom wall of the connecting box, and a containing table is jointly and fixedly installed at the top ends of the second air springs and the telescopic ends of the second dampers. The device is provided with the base and the detection mechanism, so that the influence of external wind power on the detection of the perpendicularity of the road and the bridge is avoided.

The invention provides a modified roadbed material based on a gneiss weathered material and a construction method of a roadbed. The modified roadbed material comprises the gneiss weathered material, a solid admixture, a sodium silicate solution, gneiss-based mullite whiskers and a carbon fiber net body, by adopting the modified roadbed material and cooperating with the roadbed construction method provided by the invention, the compressive strength, the water resistance, the erosion resistance and the structural compactness of the modified roadbed material are effectively and greatly enhanced, and the modified roadbed material can meet the core performance requirements of the roadbed material on high-strength bearing and excellent water stability; and meanwhile, the method has the remarkable characteristics of low cost, outstanding environmental protection property, simplicity and convenience in construction operation and the like, and finally creates an innovative technical path for traffic engineering construction in gneiss weathering distribution areas.

The utility model belongs to the technical field of solar photovoltaic technology and traffic engineering, and particularly discloses a ceiling type high-speed photovoltaic support structure which comprises a photovoltaic component, a support system, an inclination angle fixing device and a support base structure. Wherein the support system is fixedly installed on the support base structure, the support system is arranged in the expressway direction, the inclination angle fixing device is fixedly arranged at the upper end of the support system, and the inclination angle fixing device is used for obliquely arranging the photovoltaic component on the support system. The photovoltaic component comprises a photovoltaic assembly and a transparent material layer, and the photovoltaic assembly and the transparent material layer are spliced in an inserting mode. According to the utility model, the transparent material layer is filled in the gap of the photovoltaic assembly, so that road illumination is ensured, and the problem of poor sight at night or in severe weather caused by shading of a ceiling is avoided.

The utility model relates to the technical field of traffic engineering, in particular to a traffic engineering protective fence which comprises a shell, sliding grooves are formed in the same sides of the two symmetrical faces of the shell, and sliding covers are installed in the sliding grooves in a sliding mode. The force unloading assembly is installed in the shell, and the force unloading assembly is used for reducing the impact force borne by the protective fence; and the warning assembly is installed on one side of the force unloading assembly, and the warning assembly is used for warning passing vehicles. Compared with the prior art, the force unloading assembly is arranged, the vehicle impact force can be effectively unloaded, the crashworthiness is improved, and the service life is prolonged; the pressure spring ensures stable ejection of the ejection plate, so that the force unloading assembly is convenient to release; the clamping columns and the clamping grooves are flexibly matched, so that the protective fence is adjustable in layout and high in adaptability; meanwhile, the shell can be used as a temporary seat, construction is facilitated, and space is saved due to the fact that the shell is placed in a stacked mode.

The utility model provides a marked line clearing device for traffic engineering, belongs to the technical field of traffic engineering, and aims to solve the problems that the height of a protective cover of an existing marked line clearing device for traffic engineering is mostly fixed, and abrasion is possibly caused once the road surface with poor flatness is met. And the problems of nozzle blockage, abrasion and the like possibly caused by the water quality problem are solved. Comprising a marked line removing body, a pressurizing mechanism, moving rollers, a telescopic handle, a corrugated protective cover, a water conveying pipeline, an adjusting assembly and a maintaining assembly. The pressurizing mechanism is arranged in the marked line removing main body; the moving rollers are mounted on the left and right sides of the marked line removing main body; the telescopic handle is hinged to the rear side of the pressurizing mechanism; the top end of the corrugated protective cover is fixedly mounted at the bottom of the marked line removing main body; the adjusting assembly is arranged at the upper part of the marked line removing main body; the maintenance assembly is arranged in the middle of the water conveying pipeline. The device has the advantages of efficient protection, high applicability, convenience in maintenance and the like.

The road tamping device for the urban road and the traffic engineering comprises a shell, a connecting base is fixedly installed on the outer wall of the shell, a hydraulic cylinder and an energy accumulator are fixedly installed in the shell, the push rod end of the hydraulic cylinder is fixedly connected with a tamping hammer, a force exerting base is installed at an opening in the bottom end of the shell in a sliding and penetrating mode, and the force exerting base is fixedly connected with the energy accumulator. The lower end of the force exerting base is fixedly connected with a connecting plate, a tamping plate is arranged at the bottom of the connecting plate, and two embedding grooves are symmetrically formed in the top of the connecting plate; according to the tamping plate, the bolts are matched with the threaded holes, so that the tamping plate can be conveniently disassembled and assembled on the mounting plate, tamping plates of different sizes can be conveniently replaced according to use requirements, the bolts can be locked in the embedding grooves through the arrangement of the positioning plates and the positioning grooves, and the tamping plate is convenient to disassemble and assemble. And the situation that all bolts are loosened due to impact force borne by the tamping plate in the ground tamping process is avoided, so that the tamping plate mounting reliability is improved, and the positioning plate can be locked in the embedding groove through the arrangement of the locking mechanism.

The invention provides a multipath traffic engineering optimization method, electronic equipment and a program product, and relates to the technical field of computers. The multipath traffic engineering optimization method disclosed by the invention comprises the following steps: collecting a topological structure of a network and traffic demand data, wherein the traffic demand data is used for describing the traffic required to be transmitted from a source node to a destination node in a single control period; aggregation processing is carried out on traffic transmission between the nodes according to the topological structure and the traffic demand data, and a traffic aggregation result is determined; reasoning is conducted according to the topological structure and the traffic demand data, a traffic distribution result is determined, and in the reasoning process, the node hidden state and the link hidden state are synchronously updated by alternately executing information transmission from a node to a link and information transmission from the link to the node, so that fusion of the topological structure and the traffic demand is achieved; carrying out constraint correction on a flow distribution result; and performing conversion according to the flow distribution result after constraint correction, and determining and issuing a target routing strategy.

The utility model relates to the technical field of traffic engineering, and discloses a height-adjustable protective fence for traffic engineering, which comprises two symmetrically mounted stand columns, two transverse plates are vertically symmetrically and slidably arranged between the two stand columns, and a plurality of protective assemblies are mounted between the two transverse plates. A driving assembly for driving the two transverse plates to move up and down is arranged on the stand columns, the driving assembly comprises a two-way lead screw rotationally arranged between the two stand columns, two threaded blocks are symmetrically connected to the outer side of the two-way lead screw in a threaded mode, and connecting rods are hinged between the threaded blocks and the transverse plates; by rotating the bidirectional screw rod, the bidirectional screw rod can push the two threaded blocks to get close to or away from each other, and the threaded blocks push the connecting rods to change angles, so that the transverse plate is pushed to move, the protection height of the device is adjusted, and the practicability of the device is improved.

Aspects of the subject disclosure may include, for example, in response to a Border Gateway Protocol (BGP) update from an egress provider edge router connected to a destination customer network, receiving a request for an end-to-end SR policy or an end-to-end path from an ingress provider edge router, where the BGP update includes a prefix of the destination customer network and a first color; using color mapping data, determining a first domain associated with the first color and determining a second color to be associated with a second domain and mapped to the first color, where a color is a numerical value associated with a network intent of a domain, the color mapping data define mappings between different colors associated with different domains, and the mapped first color and second color enable identification of a first intent and a second intent that belong to the first domain and the second domain, respectively; and generating the end-to-end path reflecting each definition of the first and the second intents identified by the first color in the first domain and the second color in the second domain. Other embodiments are disclosed.

This utility model discloses an asphalt pavement thickness detection device for traffic engineering, including a fixed base, on which a supporting vertical plate is fixedly installed. A strip groove is formed in the middle of the supporting vertical plate. A lifting drive assembly is installed on the back of the supporting vertical plate. The output end of the lifting drive assembly is connected to a lifting mounting plate via a connecting block passing through the strip groove. A drive motor is installed on the lifting mounting plate. The output end of the drive motor passes through the lifting mounting plate and is connected to a disassembly assembly. A sampling and measurement assembly is detachably installed at the bottom of the disassembly assembly. A cleaning assembly is installed at the opening of the fixed base below the sampling and measurement assembly. The advantages are: this utility model has a simple structure, eliminates the need for manual measurement of asphalt pavement thickness, cleans away asphalt adhesives that may affect the reading, and provides intuitive and accurate measurement data. The measurement process is simpler and more convenient.

1. Name of the product in this design: Warning sign (traffic engineering). 2. Purpose of this design: A warning sign. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a dynamic regulation and control method and system for highway reconstruction and extension traffic, and relates to the technical field of traffic engineering and intelligent traffic systems. The method comprises the following steps: acquiring vehicle information, generating charge labels and grouping the charge labels; calculating retention intensity to identify priority vehicles; extracting boundary parameters to judge traffic conditions; calculating a path index marking state; according to the invention, through collecting the axle number, tonnage and vehicle type codes of the vehicles and generating charge labels, fine classification of passing vehicles is realized, queuing time and charge data are combined to calculate retention intensity, priority passing vehicles and lanes are identified, decision-making accuracy is improved, lane boundaries and capacity parameters are extracted, and the accuracy of the lane boundaries is improved. The event conflict path is identified in combination with the path structure and the spatial position, a path segment linkage relationship is established, the spatial coupling and path identification capability of regulation is enhanced, fine regulation is realized, and the traffic efficiency and the event handling level are improved.

The utility model provides a pavement maintenance device for urban traffic engineering, which belongs to the field of pavement maintenance and comprises a movable bottom plate, a suction mechanism is arranged at the top of the movable bottom plate, a sweeping component is arranged on one side of the movable bottom plate, and a spraying component is arranged at the top of the movable bottom plate. According to the road kerb included angle cleaning device, the suction mechanism is arranged, so that the effect of extracting and cleaning dust and garbage at the road kerb included angle is achieved; the movable bottom plate is pushed to a road needing to be swept; an exhaust fan is started, and garbage and dust on the road surface can be sucked into a collecting box through cooperative use of an exhaust pipe and a dust suction pipe; through the arrangement of the cross-shaped pipe, the bottom and the two sides of the movable bottom plate can be extracted and cleaned at the same time, and the cleaning efficiency is greatly improved; the garbage sucked into the collecting box can be blocked by the partition plate after being continuously sucked by the suction pipe, and dust can finally enter the dust storage box through the leakage holes, so that subsequent cleaning is facilitated.

1. Name of the product in this design: Road flower box guardrail (traffic engineering). 2. Purpose of this design: This design is used for the decoration and beautification of road guardrails. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present application relates to a kind of vacuum tube maglev traffic line alignment design optimization method.The existing design system cannot meet the design requirements of superhigh-speed vacuum tube maglev traffic line.This method establishes vehicle motion force analysis model, obtains the calculation formula of guiding force and levitation force of any alignment;According to the alignment characteristic parameters of vehicle parameters and different alignment, the guiding force and levitation force of different alignment are calculated;Select the alignment combination that changes relatively gently, optimize the alignment characteristic parameters of different alignment;Establish the dynamic interaction model of vehicle and guide rail beam, calculate the dynamic response index of each alignment combination;Compare the dynamic response index and statistical distribution characteristics of each alignment combination, obtain the optimal alignment combination.This method can accurately consider the comfort and safety variation law under superhigh-speed running condition, realize the parameter determination and design scheme optimization of vacuum tube maglev traffic line, and provide protection for the engineering application of superhigh-speed vacuum tube maglev traffic.

The application discloses a tunnel flow dynamic scheduling system for small-granularity slice networks and relates to the fields of network slicing and traffic engineering.The application aims to solve the problems of low resource utilization of small-granularity slices and the difficulty of guaranteeing service experience by passive response scheduling in the prior art.The system comprises a small-granularity slice sensing layer, a dynamic strategy engine and a tunnel execution layer.The sensing layer collects queue depth and time delay data of tunnels in real time;the strategy engine predicts congestion based on a prediction model and identifies idle slices to initiate resource lending; and the execution layer dynamically adjusts paths and queue parameters to complete the lending.The application realizes prediction-based active elastic scheduling, significantly improves network resource utilization and guarantees the performance of high-priority services.

The invention relates to the technical field of traffic engineering, in particular to a river-crossing bridge floor wind forecasting method and a risk early warning service system.The method comprises the steps that numerical weather forecasting data, three-dimensional terrain data, bridge structure three-dimensional model data and real-time traffic monitoring data are obtained, and a forecasting initial data set is constructed; simulating disturbance of a river canyon and a bridge structure to a background wind field based on a computational fluid dynamics method, and generating a bridge floor wind field analysis result; and further combining real-time bridge floor condition monitoring data and traffic flow data, querying a risk threshold matrix, dynamically correcting a risk level based on a deflection effect index, calculating to obtain a dynamic comprehensive risk level, and automatically generating graded early warning information and a traffic control decision instruction matched with the risk level and spatial distribution. According to the method, the refinement degree and the risk assessment accuracy of the bridge floor wind forecast of the river-crossing bridge can be improved, and the real-time early warning and active control of the bridge floor wind risk are realized.