34 results about "Traffic simulator" patented technology

A traffic simulator for a cellular radio telecommunications network. The traffic simulator includes a function handler which generates a plurality of basic call functions performed by mobile stations (MSs) over an air interface link with the network. A sequence handler utilizes the basic functions to generate a plurality of call sequences, and a traffic mix handler utilizes the plurality of call sequences to generate an overall traffic mix. A MS handler includes a plurality of MS state machines for different types of MSs and a database of MS properties. The MS handler interfaces with the basic functions to generate realistic inputs to the sequence handler. A cells handler includes a database of cells in the network and parameters relating to radio conditions. The cells handler also interfaces with the basic functions to generate realistic inputs to the sequence handler. A traffic repository may inject recorded real mobile station traffic into the traffic mix. A connection manager sends the traffic mix to external network components, and a graphical user interface (GUI) enables an operator to interface with the traffic simulator and generate specified traffic scenarios.

The invention discloses an intersection signal timing control optimization method and device, and relates to the technical field of computers. A specific embodiment of the method comprises the steps of acquiring a state-action-reward sample set, wherein the state-action-reward sample set comprises state-action-reward sub-sample sets of at least one intersection; based on a neural network and the state-action-reward sample set, performing training to obtain a traffic state simulator; and on the basis of enhanced learning, the state-action-reward sample set and the traffic state simulator, performing training to obtain a signal timing control model. According to the method and the device, the traffic state simulator can be obtained by training based on a neural network model and the state-action-reward sample set, and the signal timing control model is obtained by training based on the traffic simulator and the enhanced learning. The problem that simulated data does not conform to actualtraffic conditions and is inaccurate due to collection or assumption of multiple traffic parameters in the prior art is solved, and the universality and flexibility are improved.

The invention relates to a method for achieving an interactive integration experimental platform of a microscopic traffic simulator and a driving simulator. Data of the driving simulator are imported into the microscopic traffic simulator to control an automobile in the microscopic traffic simulator, and the integration of the microscopic traffic simulator and the driving simulator is achieved. The method comprises the following steps: (1) building a traffic environment required by an experiment in the microscopic traffic simulator; (2) extracting driver operation data in the driving simulator; (3) enabling the driver operation data to be read and stored by the microscopic traffic simulator, changing operating parameters of a test automobile, enabling the test automobile to travel according to the operation of a driver, and enabling the other automobiles in the simulation environment to travel according to an inherent simulation strategy in the microscopic traffic simulator; and (4) extracting relevant data, and carrying out experimental evaluation. According to the method for achieving the interactive integration experimental platform of the microscopic traffic simulator and the driving simulator, good simulation can be carried out on real road traffic circulation states, a virtual experiment scene which is more real is provided for the drivers, applied range of the driving simulator is outstandingly improved, and reliability and accuracy of the driving simulation experiments are improved.

The invention relates to a BIM information and traffic simulation information integration system and an integration method thereof. According to the method, a BIM (building information model) on a building information platform is imported into a microscopic traffic simulator, a traffic simulation model is further constructed on the basis of the BIM, then traffic simulation information of the microscopic traffic simulator is exported to the BIM platform, and integration of BIM information and the traffic simulation information is realized. Through the system and the method, the BIM informationand the traffic information can be integrated, rapid model conversion between different software is realized, collaborative working of the software is brought into full play, complementation of advantages is realized, and design efficiency is improved.

A method for creating a traffic scenario in a virtual driving environment is provided. The method includes steps of: a traffic scenario-generating device, (a) on condition that driving data have been acquired which are created using previous traffic data corresponding to discrete traffic data extracted by a vision-based ADAS from a past driving video and detailed traffic data corresponding to sequential traffic data from sensors of data-collecting vehicles in a real driving environment, inputting the driving data into a scene analyzer to extract driving environment information and into a vehicle information extractor to extract vehicle status information on an ego vehicle, and generating sequential traffic logs according to a driving sequence; and (b) inputting the sequential traffic logs into a scenario augmentation network to augment the sequential traffic logs using critical events, and generate the traffic scenario, verifying the traffic scenario, and mapping the traffic scenario onto a traffic simulator.

The invention relates to an integrated network experiment platform for achieving functional integration of a microcosmic traffic simulator and multiple driving simulators. According to the integrated network experiment platform for integrating the microcosmic traffic simulator with the multiple driving simulators, each driving simulator which serves as a branch control console detects and records driving behavior parameters of a corresponding driver and the state of a test car in real time and then sends the information to the microcosmic traffic simulator which serves as a main control console through the network communication protocol; after the information input each time is processed by the microcosmic traffic simulator, current traffic flow parameters are analyzed and calculated and then are fed back to each driving simulator; after the road network traffic flow parameters received by the driving simulators are visualized, the drivers can see vehicles near the test cars on the display screens of the driving simulators, and then the drivers can make driving decisions according to the provided information. The integrated network experiment platform for integrating the microcosmic traffic simulator with the multiple driving simulators has the advantages that limitation that a traditional driving simulator can only be used for studying driving behaviors of a single driver is broken through, and the study of the influence of the driving behaviors of multiple drivers or a specific group of drivers on the state of the whole traffic flow is available; due to the fact that the microcosmic traffic simulator is integrated with the multiple driving simulators, simulation of the traffic flow near each test car is more vivid, and the experimental capacity of the driving simulators to the traffic flow operation behaviors is obviously improved.

The invention provides a service traffic simulation method and device and a service traffic simulator. The scheme comprises the following steps: selecting at least one traffic packet needing to be sent as a target traffic packet; obtaining at least one physical network port to be subjected to packet sending; based on the obtained user instruction, obtaining the packet sending duration, the packet sending rate, the client starting IP address, the client ending IP address, the server starting IP address and the server ending IP address of the target traffic packet; and sending the target traffic packet based on the physical network port, the packet sending duration, the packet sending rate, the client starting IP address, the client ending IP address, the server starting IP address and the server ending IP address. In the scheme, after the target traffic packet is determined, the target traffic packet is bound to the physical network port for packet sending, the packet sending rule is acquired, and the packet is sent to the test object based on the packet sending rule, so that packet sending operation can be performed by adopting a plurality of physical network ports at the same time, and simultaneous execution of multiple tasks is realized.

The invention provides a traffic simulator bearing platform for an unmanned driving test and relates to the technical field of vehicle testing. The technical problem to be solved is traffic simulation. The traffic simulator bearing platform for unmanned driving test comprises a frame, a front wheel carrier, a rear wheel carrier and a bearing housing, wherein the front wheel carrier, the rear wheelcarrier and the bearing housing are mounted on the frame; a crossed roller bearing is arranged on the front wheel carrier; a steering cover is fixed on the inner ring of the crossed roller bearing; asteering motor used for driving the steering cover to rotate is arranged on the front wheel carrier; a front wheel axle is arranged on the inner ring of the crossed roller bearing; a front wheel is arranged on the front wheel axle; a front wheel driving motor is arranged on the steering cover; a rear wheel axle is arranged on the rear wheel carrier; a rear wheel is arranged on the rear wheel axle; a brake is arranged on the rear wheel carrier; a main controller used for controlling the steering motor, the front wheel driving motor and the brake to run is arranged on the frame; and a traffic simulator is arranged on the bearing housing. The traffic simulator bearing platform for unmanned driving test is suitable for traffic simulation participants in the unmanned driving test.

A traffic simulator for simulating a traffic state with high accuracy. An attention object searching section (60) searches for an attention object to which a driver should pay attention when driving a car. A recognition attention object selecting section (64) and a driver recognition object selecting section (68) both select an attention object recognized by the driver from the attention objects searched for according to driver's ability information preset by a data creating section (13). A movement determining section (42) determines the movement of a vehicle model according to the selected attention object.

The embodiment of the invention provides a vehicle monitoring method and device and a storage medium. The method comprises the steps of obtaining a starting place, a destination, starting time and arrival time of a target vehicle; inputting the starting place, the destination, the starting time and the arrival time of the target vehicle into a target traffic simulator to obtain target vehicle driving track; wherein a target traffic simulator is obtained by adopting reward strategy intensive training according to the traffic flow information collected by the road monitoring system, and the driving track comprises the driving track of a road section monitored by the road monitoring system and the driving track of a road section not monitored by the road monitoring system. By implementing theembodiment of the invention, the specific driving track of the vehicle can be determined.