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487 results about "Traffic simulation" patented technology
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Traffic simulation or the simulation of transportation systems is the mathematical modeling of transportation systems (e.g., freeway junctions, arterial routes, roundabouts, downtown grid systems, etc.) through the application of computer software to better help plan, design, and operate transportation systems. Simulation of transportation systems started over forty years ago, and is an important area of discipline in traffic engineering and transportation planning today. Various national and local transportation agencies, academic institutions and consulting firms use simulation to aid in their management of transportation networks.
Track traffic simulation system
ActiveCN103745624AHigh degree of simulationImprove training effectCosmonautic condition simulationsSimulatorsMathematical modelTraffic simulation
The invention discloses a track traffic simulation system. The track traffic simulation system comprises an ATC (Automatic Train Control) simulation system 11, a train driving simulation system 12 and a dispatching simulation system 13, wherein the ATC simulation system 11 is connected with the train driving simulation system 12 and is used for reappearing the control and the running rule of a real train according to a first mathematic model and carrying out driving training on a driver by combining the dynamic demonstration of a three-dimensional scene; the ATC simulation system 11 is connected with the dispatching simulation system 13 through a gateway computer and is used for reappearing the control and the running rule of a real ATS (Automatic Train Supervision) system according to a second mathematic model and carrying out dispatching training on a dispatcher by combining interactive operation of behavior simulation of the driver. According to the track traffic simulation system disclosed by the embodiment of the invention, the ATC simulation system, the train driving simulation system and the dispatching simulation system are integrated, the combination of the train driving training and the dispatching training is realized, the simulation degree is increased, and thus the training effect is enhanced.
Owner:TRAFFIC CONTROL TECH CO LTD
Artificial intelligent training platform for intelligent networking vehicle plan decision-making module
InactiveCN107506830AImprove generalization abilitySafe and "Real Training Scenarios"Mathematical modelsMachine learningFrame basedReinforcement learning algorithm
The invention, which relates to the technical field of an intelligent vehicle automatic driving and traffic simulation, relates to an artificial intelligent training platform for an intelligent networking vehicle plan decision-making module and aims at improving the intelligent level of the intelligent vehicle plan decision-making module based on enriched and vivid traffic scenes. The artificial intelligent training platform comprises a simulation environment layer, a data transmission layer, and a plan decision-making layer. The simulation environment layer is used for generating a true traffic scene based on a traffic simulation module and simulating sensing and reaction situations to the environment by an intelligent vehicle, thereby realizing multi-scene loading. The plan decision-making layer outputs a decision-making behavior of the intelligent vehicle by using environment sensing information as an input based on a deep reinforcement learning algorithm, thereby realizing training optimization of network parameters. And the data transmission layer connects the traffic environment module with a deep reinforcement learning frame based on a TCP / IP protocol to realize transmission of sensing information and vehicle control information between the simulated environment layer and the plan decision-making layer.
Owner:TONGJI UNIV
City-level intelligent traffic simulation system
ActiveCN110164128ASolve low work efficiencyDetection of traffic movementForecastingState predictionFeature extraction
The invention discloses a city-level intelligent traffic simulation system. With multi-source heterogeneous data as input, the vehicle queue length of each lane at an intersection can be predicted, the evolution of the vehicle queue length is further dynamically simulated, and the simulation system comprises a data collection module, a multidimensional database, an algorithm module, a traffic state prediction module, a traffic simulation derivation module and an interaction visualization module. In the data collection module, the collected data comprise traffic dynamic data and static data. The multidimensional database is used for receiving various traffic dynamic information in real time and storing road infrastructure configuration information. In the algorithm module, a generated confrontation network is used for data generation and state prediction on the vehicle queue length, and the processing process comprises data feature extraction, data dimension processing, confrontation network generation, and hyperparameter optimization. The vehicle queue length of each lane at the intersection can be predicted, and the evolution of the vehicle queue length is further dynamically simulated.
Owner:ENJOYOR COMPANY LIMITED
Road traffic simulation apparatus
InactiveUS20050192736A1Analogue computers for vehiclesCosmonautic condition simulationsVehicle dynamicsVehicle behavior
A technique for simulating natural behaviors of moving objects is provided. A road traffic simulation apparatus includes a simulation unit for performing a traffic simulation, a display unit for displaying a progress status of the traffic simulation and a control unit for controlling the simulation unit. The simulation unit has a traffic environment database and a moving object model. The moving object model has a driver model in which a driving operation of a driver is modeled and a vehicle dynamics model in which a vehicle behavior is modeled. The driver model performs different processes in parallel in respective different cycles. The results of each cycle process are integrated and output to the vehicle dynamics model.
Owner:HONDA MOTOR CO LTD
Optimization method of intersection dynamic comprehensive evaluation and signal control system based on real-time simulation model
InactiveCN103337161AImprove timelinessAccuracyControlling traffic signalsStatistical analysisTime headway
The invention discloses an optimization method of an intersection dynamic comprehensive evaluation and signal control system based on a real-time simulation model. Statistical analysis is performed on an intersection vehicle arrival time distribution law and a saturation time headway distribution law, simulation control is performed on vehicles monitored in real time, analytical calculation of traffic flow parameters of an intersection such as mean queue length, queue time and travel vehicle speed, and characteristics such as vehicle exhaust, oil consumption and noise, and acquired information is shared and an optimized signal control scheme is implemented by a third party control platform. The method has the advantages that a real-time data acquisition function is realized by test coils embedded in interfaces at the near end and the far end of an intersection entrance road; the simulation model adopts vehicle arrival and green light termination as triggering conditions of starting a simulation system traffic flow parameter configuration; a saturation time headway is adopted as a time series distribution basis of vehicle leaving; simulation car following and lane changing behaviors are realized by a series of algorithms; and a traffic simulation function has timeliness, accuracy and rapid response.
Owner:上海济安交通工程咨询有限公司
Real-time online traffic simulation system and method
InactiveCN110570660AFully consider timelinessHigh precisionDetection of traffic movementForecastingState predictionData acquisition
The invention belongs to the technical field of traffic simulation, and provides a real-time online traffic simulation system comprising a detection data acquisition module, an initial matrix acquisition module, a dynamic path decision module, a mesoscopic traffic flow simulation module, a precision calculation module, a dynamic OD estimation module, a short-time traffic state prediction module, amesoscopic and microscopic fusion traffic simulation module and a real-time online module. According to the simulation system, the value of multi-source data can be fully utilized and mined, OD pathset more conforming to actual traffic conditions is generated, the timeliness of the simulation data is fully considered, and the accuracy of dynamic OD estimation is improved.
Owner:SHENZHEN URBAN TRANSPORT PLANNING CENT
Interactive type visual simulation system under vehicle road collaborative environments
ActiveCN105718065AImprove realismImprove immersionInput/output for user-computer interactionGraph readingThree dimensional simulationDriver/operator
An embodiment of the invention provides an interactive type visual simulation system under the vehicle road collaborative environments.The system comprises a real traffic simulation three-dimensional model, a virtual driving vehicle, a driver-vehicle interactive simulation unit and a traffic flow model, and the traffic flow model considers driver factors and combines a vehicle starting and stop module.The system is based on the three-dimensional simulation environments, an interactive type dynamic mapping model corresponding to the virtual vehicle, different typical scene simulation and the like, the traffic flow model considering the driver behavior is designed, the behavior and the effect of a cooperative vehicle infrastructure system can be displayed to a user from multiple angles, at the same time, the acceptance degree of the driver on vehicle road collaboration certain functions and the design rationality of certain functions are analyzed, and a virtual driving environment with sense of reality and sense of immersion can be provided for the driver.
Owner:BEIJING JIAOTONG UNIV
Cellular automaton model based urban road network traffic flow simulation design method
ActiveCN104298829AIncrease authenticityPracticalSpecial data processing applicationsCellular automationSimulation
The invention provides a cellular automaton model based urban road network traffic flow simulation design method. The cellular automaton model based urban road network traffic flow simulation design method comprises the following steps of 1 establishing an urban road network consisting of a plurality of bidirectional two-lane roads; 2 establishing an on-lane vehicle update rule; 3 establishing a vehicle update rule at intersection positions and establishing a deadlock avoiding rube, wherein vehicles on the cells in the intersections and cells on the peripheries of the intersections follow different update rules; 4 distributing N vehicles in the urban road network to perform a simulation experiment, wherein the vehicles rung by following the rule in the step 2 and the rule in the step 3; 5 acquiring outgoing data of the vehicles in the step 4 and performing calculation and analysis so as to evaluate the characteristic of traffic flows of the urban road network. By means of the cellular automaton model based urban road network traffic flow simulation design method, the running states of complicated traffic flows of the bidirectional two-lane roads and the intersections can be really reflected, and the truthfulness of traffic simulation can be improved.
Owner:ZHEJIANG NORMAL UNIVERSITY
Traffic simulation algorithm for asynchronous transfer mode networks
InactiveUS7013255B1The effect is accurateAnalogue computers for electric apparatusDigital computer detailsTraffic capacityNetwork packet
The present invention is directed to a traffic simulation algorithm for an asynchronous transfer mode communications (ATM) network. The algorithm recognizes that packets in ATM networks can have interarrival times that are lognormally distributed or lognormally and normally distributed. Lognormal and, in some cases, normal random number generators are used to generate packet interarrival times of a synthetic traffic stream.
Owner:AVAYA INC
Dynamic traffic simulation platform and simulation method thereof
ActiveCN103412975ASolve the problem of quickly matching to the road segmentSolve congestionSpecial data processing applicationsSimulationTraffic simulation
The invention relates to a dynamic traffic simulation platform which comprises a perception layer, a fusion layer, an application layer and a presentation layer. The perception layer is connected with a dynamic traffic data collecting device, multivariate heterogeneous traffic flow data are obtained and transmitted to the fusion layer in real time, and the fusion layer is connected with the application layer. The multivariate heterogeneous traffic flow data and GIS data are received for processing, the application layer obtains road network dynamic traffic flow data, and a traffic simulation model is formed. Through the traffic simulation model and a traffic OD matrix, dynamic traffic simulation is performed, and the presentation layer receives the traffic simulation result of the dynamic traffic simulation in the application layer, and provides service application and presentation to a terminal client. The problem that in the prior art, a large number of real-time dynamic traffic data can not be rapidly matched with a road section well is solved. Therefore, the multifunctional dynamic traffic simulation platform is capable of performing OD back stepping and real-time dynamic traffic early warning on dynamic traffic flows on the basis of a GIS grid rapid matching technology.
Owner:TSINGHUA UNIV
Traffic conflict simulation two-stage parameter calibrating method
ActiveCN102521438AImprove the calibration processSpecial data processing applicationsTraffic conflictSimulation
The invention discloses a traffic conflict simulation two-stage parameter calibrating method, which comprises the following steps of: calibrating parameters in traffic simulation software (VISSIM) influencing traffic running at a first stage; and calibrating a simulation conflict decision threshold value in conflict analysis software (SSAM) at a second stage. On the basis of the conventional traffic simulation model parameter calibrating method, the two-stage parameter calibrating method oriented to traffic conflict simulation is provided, so that the defect of low conflict simulation accuracy existing in the conventional parameter calibrating method is overcome; and the method has practical engineering use value on the aspect of safety research of a traffic design scheme by using microscopic simulation software.
Owner:SOUTHEAST UNIV
Process for constructing road net model for traffic navigation system and traffic emulation system
InactiveCN101359434AEffective organizationEfficient managementRoad vehicles traffic controlEducational modelsDirected graphData file
The invention discloses a road network model construction method used for the traffic navigation system and the traffic simulation system. The road network model construction method is used for storing the electronic map in the traffic navigation system and defining the virtual road network in the traffic simulation system. The construction method adopts the as the basic unit and adopts the directed graph as the abstract data structure; the model construction method includes the network entity description method, the lane connectivity description method, the intersection traffic rule description method and the method which adopts the XML format to store the road network data files. The road network model construction method has the advantages that the constructed road network model can realize the description of the contents, including the shape and position features of roads, the inter-road connective relation, the inter-lane connective relation, adjacent relation, steering limitations and the attribute information, and the traffic rules of the road intersections; the constructed road network model also can organize and manage great quantities of attribute and connectivity information.
Owner:覃征 +1
Vehicle violated lane occupying tracking detection system and method for four-dimensional live-action traffic simulation
ActiveCN108877234ARealize full path tracking and monitoringKeep uniqueDetection of traffic movementParticular environment based servicesLow speedCloud processing
The invention proposes a vehicle violated lane occupying tracking detection system and method for four-dimensional live-action traffic simulation. The system comprises a plurality of multi-element omnibearing tracking detection radar sensors, a data collection and analysis processor, a cloud processing server, and a four-dimensional live-action monitoring management work station. A license plate snapshotting camera obtains the vehicle feature information, and combines with the multi-element omnibearing tracking detection radar sensors set in the whole path to collect the original data of eachvehicle, and the tracking positioning information of a vehicle is obtained through the data collection and analysis processor. The system achieves the full-path tracking detection of all vehicles. When a vehicle moves at a low speed for long time or occupies other lanes for long time in a violated manner, the system can give an alarm timely for reminding a driver of driving the vehicle normally. When the vehicle continues the violation, the system can timely give an alarm to other vehicles in the lane in the same direction so as to remind other vehicles of avoiding the vehicle.
Owner:河北德冠隆电子科技有限公司
Traffic simulation integration system based on interaction usages of macroscopic, mid-scopic and microscopic traffic simulation platforms
InactiveCN102393928AEasy to integrateStrengthen inheritanceForecastingDecision schemeData acquisition
The invention, which belongs to the virtual simulation technology field, more particularly relates to an integrated traffic simulation system based on interaction usages of macroscopic, mid-scopic and microscopic traffic simulation platforms. The system comprises a macroscopic traffic simulation module, a mid-scopic traffic simulation module, a microscopic traffic simulation module and a data collection and fusion module. The mid-scopic traffic simulation module is connected with the macroscopic traffic simulation module; the microscopic traffic simulation module is connected with the mid-scopic traffic simulation module; and the data collection and fusion module is respectively connected with the macroscopic traffic simulation module, the mid-scopic traffic simulation module and the microscopic traffic simulation module. According to the invention, on the basis of independent simulation of macroscopic, mid-scopic and microscopic traffic simulation platforms, interaction utilization of all layers of simulation systems and various simulation platform data is realized; traffic operation states of traffic flows and pedestrian flows large-scale activities can be comprehensively simulated; therefore, a technological basis can be provided for formulation of various traffic decision schemes of large-scale activities.
Owner:广州市交通规划研究所 +1
Road network limitation capacity determining method based on pressure test
InactiveCN101364344AGuaranteed practicalityGuaranteed accuracyDetection of traffic movementSpecific program execution arrangementsTraffic capacityGeographic information system software
The invention relates to a road-net ultimate capacity determination method based on pressure measurement, which belongs to the field of road-net traffic capacity control techniques and which is characterized in that: the method comprises the following steps of adopting the observation network of a computer to collect the traffic parameters of a road net; adopting a macroscopic traffic simulation and planning software Cube and a geographic information system software ArcGIS to generate road-net files and initial values of pressure measurement in the computer; adopting the software Cube to generate a pressure measurement model which performs the pressure measurement in a preset measurement period; calculating the road-net average saturation and the road-net average velocity; comparing the two calculated valves to the preset index values of the road-net average saturation and the road-net average velocity; judging whether the calculated valves meet the preset requirements; and if either fails, increasing the road-net traffic capacity and continuing the pressure measurement until both meet the requirement; and determining the road-net traffic capacity at the time as the road-net ultimate capacity. The road-net ultimate capacity determination method increases the calculation accuracy, reliability and efficiency and fills the blank of determining the road-net ultimate capacity based on pressure measurement.
Owner:BEIJING UNIV OF TECH
Multi-terminal in-loop virtual-real combined traffic comprehensive scene simulation test system and method
PendingCN111859618AMake up for limitations and other related defectsData scienceDesign optimisation/simulationSpecial data processing applicationsIntelligent NetworkIn vehicle
The invention discloses a multi-terminal in-loop virtual-real combined traffic comprehensive scene simulation test system and method. A virtual three-dimensional scene is constructed and comprises a vehicle, a road, a building, a tree, a lateral clearance, a wading road section and a portal frame, and people, animals, a weather environment, an illumination condition, signal lamps and traffic flowdata generated by microscopic traffic simulation software in the scene are used as virtual objects; driving data transmitted by a manually-controlled simulation driving vehicle, a vehicle-mounted unitof an intelligent network connection vehicle in a real environment, a road side unit and an unmanned vehicle rack are used as real objects; the three parts jointly form a traffic simulation test system with a closed-loop form, and the functions of the test system mainly comprise performance evaluation of a main body object, driving behavior analysis and the like.
Owner:CHANGAN UNIV
Interactive method of automobile driving simulator and virtual traffic environment simulation system
ActiveCN102982703AReal-time interactionFast traverseCosmonautic condition simulationsSimulatorsCar drivingDirected graph
The invention discloses an interactive method of an automobile driving simulator and a virtual traffic environment simulation system. The interactive method adopts a high-efficiency algorithm and a data structure to realize real-time interaction of the automobile driving simulator and virtual traffic environment simulation software: the traffic environment simulation software conducts interactive traffic microscopic simulation calculation according to a self-state, a received state of the automobile driving simulator, and a traffic simulation model. The automobile driving simulator receives state information about traffic participating objects near the traffic environment simulation software in a traffic flow from the traffic environment simulation software and uses the information to accomplish collision detection calculation in a three-dimensional space and realize the interaction with the traffic flow simulated by the virtual traffic environment simulation software. According to the interactive method of the automobile driving simulator and the virtual traffic environment simulation system, with the adoption of a directed graph structure, quick traversal of road environmental data is realized; the efficiency of the simulation calculation is improved; simulation calculation results are vivid; and the interactive relation of the automobile driving simulator with the virtual traffic environment simulation system can be simulated well.
Owner:成都合纵连横数字科技有限公司
Method, Apparatus, and Computer Program Product for Traffic Simulation Tool for Networks
InactiveUS20110122776A1Error preventionFrequency-division multiplex detailsSurvivabilityTraffic simulation
Method, apparatus, and computer products are provided for creating a network design and simulating communication traffic over the network design on a computer. Input of network elements is received, and the network elements are operatively connected by links to form a network design. Each network element and each link include parameters representative of software and hardware. Input is received of a test condition for a simulation of communication traffic over the network design. The test includes the type of communication traffic, the amount of communication traffic, and the times at which the communication traffic occurs. The computer executes the simulation of the test condition for the network design to determine a survivability for the network elements and the links connecting the network elements. The computer executes an impact analysis on the output of the simulation to determine if there are excessive loads on the network elements and links.
Owner:AT&T INTPROP I L P
Traffic signal instrument control strategy comprehensive performance validity test system and method
InactiveCN102915636ARoad vehicles traffic controlSpecial data processing applicationsTraffic signalSimulation
Owner:BEIJING UNIV OF TECH
Dual-mode switch based self-adaptive cruise control method for electric car
ActiveCN106740846AImprove securityImprove economySpecial data processing applicationsDriver/operatorCruise control
The invention discloses a dual-mode switch based self-adaptive cruise control method for an electric car. The method comprises steps as follows: establishing a stable car following mode; establishing a fast approaching mode; establishing a dual-mode switch rule for control moment distribution on the basis of fuzzy reasoning. According to the method, driving demands of a driver are summarized through analysis of actually measured microscopic driving NGSIM data collected by Federal Highway Administration combined with microscopic traffic simulation research scholars; the control rule of the fast approaching mode and the stable car following mode is constructed under a model prediction control frame, and a switch rule between the modes is made according to the fuzzy reasoning. A control mode of a self-adaptive cruise control system is closer to driving characteristics of a real driver and is more adaptive to complicated road conditions. The dual-mode switch based self-adaptive cruise control method for the electric car can really reflect demands for the stable car following mode, the fast approaching mode and the like of the driver in a normal driving process, and can guarantee safety, car following performance, comfort and economic efficiency of the car in a traveling process.
Owner:DALIAN UNIV OF TECH
Simulation testing platform system for researching driving behaviors
ActiveCN101770708AAvoid unreliabilityGuarantee authenticityCosmonautic condition simulationsSimulatorsDriver/operatorBehavioral study
The invention relates to a simulation test platform system for researching driving behaviors, which can provide a vehicle environment and driving functions which are completely consistent with the actual driving for drivers, ensures the driving operation and the authenticity of vehicle data acquisition, and ensures the basic simulation of the indoor use of a test vehicle and the feedback of road conditions to the driving so as to provide a traffic visual simulation environment with high immersion for the drivers. The simulation test platform system comprises a driving test vehicle, a driver information acquisition system, a vehicle information acquisition and processing system, a traffic simulation visual driving module, a visual projection system, a visual simulation and a road traffic scene modeling system, a road driving resistance simulation system and a system integration module, wherein the driving test vehicle is connected with the vehicle information acquisition and processing system, and the real-time communication exchange and data feedback between the vehicle information acquisition and processing system and the traffic simulation visual driving module are carried out through the system integration module. The simulation test platform system is characterized in that the driving test vehicle is of a real mini bus, and the steering mechanism of the mini bus is disconnected.
Owner:TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
Traffic signal timing optimization method based on deep reinforcement learning
ActiveCN112700664AOutput suitable phaseInternal combustion piston enginesRoad vehicles traffic controlTraffic signalSimulation
The invention discloses a traffic signal timing optimization method based on deep reinforcement learning. A signal lamp outputs a proper phase according to the traffic flow states in all directions of an intersection, and dynamically adjustes the phase length; Specifically, firstly, a PPO algorithm is adopted to improve the convergence rate of the model; then, the vehicle state is defined using a DTSE method, and the design of the state, action, and award is elaborated; and finally, the actual traffic data is experimented through a traffic simulation platform SUMO. Results show that compared with traditional timing control, the scheme can effectively reduce waiting time and queuing length of vehicles in various traffic flow modes.
Owner:BEIJING UNIV OF TECH
Construction method for integrated dynamic traffic simulation platform of city
ActiveCN104866654AAchieve sharingReduce wasteSpecial data processing applicationsTraffic signalControl system
The invention discloses a construction method for an integrated dynamic traffic simulation platform of a city. The construction method for the integrated dynamic traffic simulation platform of the city has following beneficial effects: by integrating a macro-model, a mesoscopic model and a micro-model into an integrated simulation platform, the construction method helps to realize sharing of a road network and data and decrease waste of repeated modeling work and data resource so that higher efficiency and a broader application scope are obtained; compared with parameter calibration method based on the micro-model, the introduced parameter calibration method based on the mesoscopic simulation model has less modeling workload, quicker operating speed and a greater path analysis function; by additionally arranging a special interface tool, flow data can be directly imported or control data of a traffic signal control system can be directly read in; imported or read-in external static and dynamic traffic data can be automatically converted to data of the simulation platform, thereby cutting down the number of participants, updating traffic data in a real-time manner and further increasing efficiency; and the construction method is extensively applied to the field of virtual simulation.
Owner:广州市交通规划研究院有限公司
Path recognition method based on four-dimensional live-action traffic simulation road condition awareness management system
ActiveCN109064755AIncrease contentRoad vehicles traffic controlCharacter and pattern recognitionLive actionRadar
The invention provides a path recognition method based on a four-dimensional live-action traffic simulation road condition awareness management system. The path recognition method comprises the stepsthat a radar sensor arranged on the road side acquires tracking and positioning information of each passing vehicle and synchronously triggers a vehicle license plate snapping camera, and the vehiclelicense plate snapping camera acquires vehicle photos and sends the tracking and positioning information and the vehicle photos of the vehicles to a center server; vehicle feature information in the vehicle photos is extracted and compared with a local preset three-dimensional vehicle model library, fuzzy matching is conducted to extract corresponding three-dimensional vehicle models, and the vehicle tracking and positioning information is fused with the three-dimensional vehicle models; and the three-dimensional vehicle models obtained after fusion are superimposed with a three-dimensional GIS maps to achieve four-dimensional live-action road condition simulation, position information of the vehicles at different time nodes is acquired by setting a time interval, precise vehicle path information that a user wants to know can be acquired by adopting a point-line connection technology, and then the purpose of precise vehicle path recognition is achieved.
Owner:河北德冠隆电子科技有限公司
Testing system and testing method
ActiveCN108319259AEasy to testReduce testing costsProgramme controlElectric testing/monitoringVehicle behaviorSimulation
The embodiment of the invention relates to the field of driving testing systems, and discloses a testing method and a testing system. The testing system comprises a traffic simulating module, an interface interaction simulating module and a measured object, wherein the traffic simulating module is used for simulating a traffic environment in the running process of a tested vehicle and simulating the tested vehicle; the interface interaction simulating module extracts a sensor signal of the tested vehicle from traffic information and scrambles the sensor signal with environmental information; the measured object is used for determining a next control instruction of the tested vehicle according to the scrambled sensor signal of the tested vehicle and transmitting the next control instructionto the traffic simulating module. Through the testing method and the testing system, when an automatic driving function of the vehicle is tested, influence of the environment on a vehicle sensor is considered, and weather conditions and disturbing vehicle behaviors which are closer to the reality are set, so that a tested driving scene is more real, and the automatic driving function of the vehicle is conveniently verified.
Owner:SHANGHAI KELIANG INFORMATION ENG
Four-dimensional real scene traffic simulation vehicle overspeed whole-process tracking detection and alarm system and method
ActiveCN108919256ARealize real-time tracking and positioningAchieve positioningRoad vehicles traffic controlParticular environment based servicesCloud processingRadar
The invention provides a four-dimensional real scene traffic simulation vehicle overspeed whole-process tracking detection and alarm system and method. A vehicle capture camera is utilized to capturetravelling vehicles in real time to obtain characteristic information of the vehicles; real-time tracking positioning data of the vehicles are obtained through an omni-directional tracking and detection radar; a data acquisition and analysis processor extracts preset overspeed rules in a cloud processing server to judge whether the vehicles overspeed or not, conducts target lock and tracking on the overspeed vehicles, judges whether the vehicles illegally occupy a lane and overtake or not by combining with vehicle images of the vehicles, and generates alarm information to be reported to the cloud processing server so as to remind the vehicles to decelerate and remind the front vehicles on the same lane to avoid the overspeed vehicles, and thus vehicle accidents are avoided; and the cloud processing server records the starting time, the overspeed time and overspeed road sections of vehicle overspeed in time according to the alarm information, stored alarm videos, and vehicle travellingpaths collected and formed by the omni-directional tracking and detection radar distributed in a full path mode, the alarm information is formed in time, and thus vehicle accidents are avoided.
Owner:河北德冠隆电子科技有限公司
Interactive traffic simulation system
InactiveCN102467589AEnable co-simulationFlexible structureRoad vehicles traffic controlSpecial data processing applicationsCo-simulationTraffic simulation
The invention aims to provide an interactive traffic simulation system with a distributed system structure, which is a novel traffic-driving hybrid simulation system. The core is that: a returning vehicle driving simulator for a person serves as a traffic participation entity and is introduced into the traffic simulation system. The vehicle driving simulator serving as the traffic participation entity controlled by a user driving behavior and a virtual traffic participation entity generated in the traffic simulation system interact and participate traffic simulation calculation together so as to realize cooperative simulation of a plurality of vehicle driving simulators and a plurality of traffic environment simulation servers in the same virtual traffic environment. The invention has the characteristics that: the traffic simulation system has a flexible structure, is convenient to expand, supports man-machine interaction and is high in simulation confidence, and the like; and the system can be used in the fields of traffic simulation and driving simulation and can provide a novel platform for research and application in the fields of driving behaviors, driving psychology, traffic safety, intelligent transportation, road and bridge design and the like.
Owner:上海日浦信息技术有限公司
Method and device for simulating time-varying traffic state of urban express road network
ActiveCN108763776ADesign optimisation/simulationSpecial data processing applicationsTraffic capacitySimulation
The invention discloses a method and a device for simulating a time-varying traffic state of an urban express road network, and relates to the technical field of traffic, and the main purpose thereofis to reproduce the process of forming and dissipating traffic congestion of a road network, and at the same time, evaluate the implementation effect of traffic control measures. The method comprises:collecting road network information of an urban express road and coil inspection data of each section in the road network, and obtaining an all-day travel distribution table and a time-varying splitratio; determining a road section capacity of the road network according to the coil inspection data, and constructing a road network model of the an urban express road according to the road network information and the preset road network model building software; importing the road network model, the all-day travel distribution table, the time-varying split ratio, and the preset vehicle attributesinto the simulation software of the preset dynamics traffic simulation model, and inputting the traffic capacity to the road network attribute information of the road network model to construct a dynamic traffic simulation model of the urban express road. The invention is applicable to the simulation of the time-varying traffic state of the urban express road network.
Owner:SUZHOU UNIV
Comprehensive traffic network operation situation detection simulation technology facing road and railway networks
ActiveCN107103142AGuaranteed uptimeRun orderlyForecastingDesign optimisation/simulationTraffic networkSimulation
The invention discloses a comprehensive traffic network operation situation detection simulation technology facing road and railway networks. The technology is characterized by comprising a regional comprehensive traffic and transportation network emergency simulation framework, a demand estimation and prediction model based on combination of trend prediction and a neural network and an agent-based multi-mode comprehensive transportation network simulation model. According to the comprehensive traffic network operation situation detection simulation technology facing the road and railway networks, by means of exiting road network and railway network traffic data, an overall framework of a regional comprehensive traffic and transportation network emergency simulation platform is constructed in a focused mode, a time-space network modeling technology is applied, and an agent-based multi-mode comprehensive traffic simulation model is constructed.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT
Intelligent automobile virtual quick testing method
ActiveCN107403038ARealize rationalityAchieve effectivenessDesign optimisation/simulationSpecial data processing applicationsDecision modelComputer module
The invention relates to a quick virtual testing method of an intelligent automobile. The method includes that a virtual testing environment is provided by integrating an intelligent automobile environment sensing planning decision-making module and a traffic simulation module, the environment sensing planning decision-making module of the intelligent automobile can quickly generate sensor information of the intelligent automobile and environment information of trees and weather, and the traffic simulation module can quickly generate control measure information of common vehicles and roads around the intelligent automobile. Information interconnection between the intelligent automobile environment sensing planning decision-making module and the traffic simulation module can be realized by virtue of a Simulink module tool in Matlab so as to quickly generate a complete testing environment including information of the intelligent automobile, information of the common vehicles around the intelligent automobile, road control measure information and the environment information like the trees and the weather in the virtual testing environment. In the virtual environment, influence of running state features of the intelligent automobile in a traffic system and planning decision-making behaviors of the intelligent automobile on surrounding vehicles under different environment sensing equipment and different planning decision-making modules can be quickly tested.
Owner:TONGJI UNIV
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