451 results about "Virtual vehicle" patented technology

The invention belongs to an unmanned vehicle test and verification platform and a test method thereof in the field of unmanned vehicles. The platform comprises a driving simulation system, an experimental field, a network system, an upper level management center and an unmanned vehicle. The driving simulation system constructs a driving environment of a virtual vehicle according to the information collected in a natural scene; the traffic scene of the actual site of the experimental field coincides with the scene modeled by the driving simulation system; and the upper level management center is used for establishing a simulator driving environment, controlling the driving simulation system and processing data; the unmanned vehicle is a test vehicle and is automatically driven in the experimental field; and the driving information of the unmanned vehicle is transmitted to the upper level management center through a network system and then transmitted to the driving simulator of the driving simulation system. According to the invention, function verification and performance evaluation of the unmanned vehicle can be studied, and meanwhile, influences by the unmanned vehicle on an actual traffic flow can be studied and evaluated through the platform.

System for providing a virtual vehicle boundary. The system includes a method for activating a virtual fence for use with a delivery vehicle. The method comprises steps of detecting a protection event, determining that the protection event is an activation event, and activating a selected virtual fence based the activation event.

The invention provides a multifunctional simulation system for automatic driving. The multifunctional simulation system comprises a virtual vehicle module, a virtual chassis control module, a virtualroad module, a virtual traffic module, a time control unit module and a visualized interactive interface module, the virtual road module provides cartographic information for an automatic driving algorithm and the virtual traffic module, the virtual traffic module provides road conditions including vehicles, pedestrian, traffic lights and the like for the automatic driving algorithm, the automaticdriving algorithm communicates with the virtual vehicle module through a virtual chassis so as to obtain vehicle information and send vehicle control instructions, a visualized interactive interfacesends human-computer interaction information to the simulation system and displays system information in a visualized three-dimensional effect, and finally, the time control unit module controls intervals of simulation time of the simulation system comprising the automatic driving algorithm. Data interfaces of the virtual modules are kept consistent with those of a real system, so that multifunctional modes, including hardware-in-loop simulation, of the simulation system can be realized.

The invention discloses a simulation test bed for an automatic gearbox controller. The test bed comprises a host computer, a real-time object machine, a signal generating and measuring part, an engine electric controller and a plurality of electromagnetic valves, wherein the host computer, the real-time object machine, the engine electric controller and the electromagnetic valves are connected with the signal generating and measuring part respectively; the host computer downloads a simulation model of an automatic transmission vehicle dynamic assembly to the real-time object machine; an engine model, an automatic gearbox model and a whole vehicle dynamic model are integrated in the simulation model of the automatic transmission vehicle dynamic assembly; the simulation model of the automatic transmission vehicle dynamic assembly contains hardware-in-the-loop of the gearbox controller and hardware-in-the-loop of the engine electric controller to form a virtual vehicle gearbox controller develop simulation platform close to a real vehicle, can greatly improve the developing test efficiency of the gearbox controller under a condition of ensuring the software quality of the gearbox controller. The invention also discloses a method for establishing the simulation model of the automatic transmission vehicle dynamic assembly.

The invention discloses a traffic scene simulation platform and method based on virtual reality. The traffic scene simulation platform comprises: a simulation scene control module (1), a man-machine interaction mechanism decision module (2), a network communication simulation module (3) and a manipulation input interface (4), wherein the simulation scene control module (1), the network communication simulation module (3) and the manipulation input interface (4) are connected with the man-machine interaction mechanism decision module (2), and the man-machine interaction mechanism decision module (2) has pre-packaged virtual driver characteristics; and the man-machine interaction mechanism decision module (2) simulates behavior decisions of a real driver or a virtual driver and other trafficelements for various scenes, carries out human-vehicle-road combined operation virtual simulation, and controls the virtual vehicle to carry out acceleration, deceleration, braking, overtaking and / orlane changing in the virtual environment based on the dynamic attributes of the vehicle in the real environment.

A computer-implemented method for rapidly designing a vehicle package is disclosed. The method receives virtual vehicle package model data, converts the data into mechanical vehicle package model data and transmits the data to a mechanical vehicle package model system. A method is also disclosed for adjusting the mechanical model, converting the adjustment into data readable by a computer aided design system and transmitting the data to the computer aided design system for generating or modifying the virtual vehicle package. A system for designing a vehicle package is disclosed having a mechanical vehicle package model, a computer aided design system, a translator embodied in a computer system in communication with the computer aided design system and a mechanical vehicle package model in communication with the translator.

A method for sorting among a plurality of potential route plans for operating an autonomous ground based machine includes a step of creating a virtual model of a terrain of a work site. A first virtual lane having at least one measurable lane constraint is created within the virtual model. A first virtual machine footprint is created and has a first virtual movement profile corresponding to an actual autonomous movement profile of the autonomous machine. The first virtual machine footprint is moved from a starting position along the first virtual lane to an ending position according to the first virtual movement profile. During the moving step, the first virtual machine footprint is compared to the at least one measurable lane constraint. The first proposed route plan is then designated as either viable or unacceptable based on the comparison.

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.

The embodiment of the invention discloses a method, device and system for monitoring vehicle violation. The method comprises the step of receiving the vehicle information reported by vehicle-mounted equipment, wherein the vehicle information comprises vehicle geographical coordinates and corresponding time information; the step of analyzing the wheel path of a lane grade of a vehicle according to the received vehicle information; the step of detecting the violation situation of the vehicle on the lane grade according to the analyzed wheel path of the lane grade, the preset lane grade road information and the preset lane grade violation standard information. According to the embodiment, the violation detection of the lane grade can be achieved, the method, device and system are very suitable for carrying out the violation detection of the lane grade in the urban traffic road, the construction of road monitoring equipment can be reduced, and a feasible scheme is provided for virtual vehicle violation monitoring.

A system and method for providing predictive software upgrades is provided. Generally, the method comprising the steps of: querying a virtual vehicle application that simulates a real vehicle to determine one or more time period when the vehicle will be in an off state for long enough for updating of software to take place without the vehicle operating status being changed; transmitting a push notification to a user portable interactive communication device providing the one or more time periods determined, to the user for selection of one or more time period; receiving a selected one or more time period for upgrading of the software; transmitting a request for confirmation of a first of the one or more time period to the user portable interactive communication device at a predefined time period prior to the first of the one or more time period; and if the user confirms the first time period, instructing the upgrading of the vehicle control module by the vehicle at the first time period.

An adaptive cruise control system for a motor vehicle includes a forward looking object detecting arrangement for simultaneously detecting several target objects moving in the predicted path and adjacent paths of the equipped vehicle. The detecting arrangement is arranged to continuously monitor velocity and distance to each of the target objects, and a processing arrangement processes signals from the detecting means to provide information of distance to and relative speed of vehicles travelling in front of the equipped vehicle. The processing arrangement repeatedly generates velocity control signals based on the information of distance to and relative speed of vehicles travelling in front of the equipped vehicle. An arrangement controls velocity of the vehicle in response to the control signals from the processing arrangement. The processing arrangement calculates a distance in time from the equipped vehicle to a virtual target vehicle, the distance to and velocity of the virtual target vehicle being calculated on basis of the number of vehicles in the group, the spread in distance of the group, and thus the vehicle density of the group, and the variability of positions in the group, such that the algorithm of the processing means decides from the above parameters on the allowed deviations in time distance, wherein the processing arrangement is arranged to produce a signal to the velocity control arrangement based on the calculated distance in time between the equipped vehicle and the virtual vehicle.

A method for warning the driver of a motor vehicle of an impending hazardous situation caused by accidental drifting towards or into an opposing traffic lane includes determining a virtual vehicle path of the own motor vehicle and a lane marker separating the lane of the own motor vehicle from the opposing traffic lane, determining a relative position of the own motor vehicle in relation to the lane marker, checking whether an oncoming vehicle enters or has entered the virtual vehicle path, checking whether the own motor vehicle will cross or has crossed the lane marker, checking for driver activity, and outputting a warning signal or performing an automatic driving mode intervention, when the oncoming vehicle will enter or has entered the virtual vehicle path and the own vehicle will cross or has crossed the lane marker, and when the driver is inactive.

System for providing a virtual vehicle boundary. The system includes a method for activating a virtual fence for use with a delivery vehicle. The method comprises steps of detecting a protection event, determining that the protection event is an activation event, and activating a selected virtual fence based the activation event.

The invention discloses a seamless splicing panorama assisting driving system and method. The seamless splicing panorama assisting driving method includes: S1, distortion correcting, to be more specific, correcting the distortions of a wide angle camera, and obtaining images of four sides of a vehicle; S2, image registering, to be more specific, extracting characteristics of the adjacent images to realize the registration of a plurality of images; S3, aerial view transformation, to be more specific, transforming the different viewpoints of images into the same viewpoint; S4, image fusion, to be more specific, carrying out weight fusion on an interested region to eliminate the influences caused by seamed splicing, illumination, ghost image and blur and realize high-definition seamless splicing; S5, virtual vehicle implementation, to be more specific, realizing 360 degrees panoramic virtual vehicle display. The seamless splicing panorama assisting driving system and method provide a brand new driving mode for the driver; the seamless splicing panorama assisting driving system is a panoramic system without dead zone and gap, and the real 360 degrees panoramic system is provided for the driver so that the driver can visually and comprehensively realize the situations at four sides of the vehicle.

The present invention discloses an online urban road route travel time estimation method based on the virtual vehicle locus reconstruction. The method comprises the following steps: an intersection upstream road vehicle detector is controlled by signals to obtain traffic flow data collected in real time, an intersection signal machine is configured to collect signal phase information in real time; the intersection traffic wave locus coordinates are estimated in real time, the impact wave i, ii, iii and iv and the time-space operation locus existed at the signal intersection are drew; the vehicle driving sate is simplified to the state of driving at a free flow speed on a non-queue road section or the state of parking at the intersection; the vehicle time-space coordinates corresponding to the special position information in the virtual vehicle coordinates are extracted to obtain the moment of the vehicle passing through the special position so as to realize the estimation of the vehicle route travel time. The online urban road route travel time estimation method based on the virtual vehicle locus reconstruction can obtain the propagation state of a vehicle departing at any time on the route and the online travel time at any plate on the arrival route so as to have higher timeliness and accuracy.

The embodiment of the invention discloses an automatic driving simulation evaluation method and device. The method comprises the following steps: obtaining driving state data of a virtual vehicle in avirtual environment from a pre-established simulation system and sensor data collected by a virtual sensor in the virtual vehicle aimed at the virtual environment; according to the driving state data, the sensor data, and a preset vehicle driving control algorithm, determining driving control data aimed at the virtual vehicle; inputting the driving control data into the simulation system so thatthe simulation system performs driving control on the virtual vehicle according to the driving control data and displays the driving state of the virtual vehicle under driving control; and evaluatingthe performance of the vehicle driving control algorithm according to the displayed driving state of the virtual vehicle under driving control. By applying the scheme provided by the embodiment of thepresent invention, the performance of the vehicle driving control algorithm in automatic driving can be evaluated through the simulation system.

The invention discloses a virtual vehicle-based real driving cycle test device and method. The method comprises the following steps: selecting a vehicle model, a road vehicle and a driver model in driver-vehicle-road modeling platform software to perform automatic driving or real driver driving; opening a driver-vehicle-road real-time platform and importing the driver model or the real driver operation, the vehicle model and the road model established in the driver-vehicle-road modeling platform into a real-time platform; operating the real-time operation platform; stopping the real-time platform after the driver model or the real driver drives under the selected road model and the vehicle model, and stopping a base frame system; saving operation information on a driver in a file of a specific format by the driver-vehicle-road modeling platform if the operation is the real driver operation, extracting a characteristic parameter of the driver and updating into the current driver model. According to the method, the calibration and the experiment of the entire vehicle are realized.

Provided is a vehicle image display system and method wherein an advance display of the next travel action to be taken by a vehicle in automatic operation is provided in an intuitive, instantaneous, and easy-to-understand manner for an occupant. A vehicle image display system (1) is equipped with: a first display device (3) which uses a front windshield (15) as a display screen; and a second display device (4) which is a monitor device (24) mounted on a dashboard. If during automatic operation, the vehicle traveling on a scheduled travel route (37) to a destination with an automatic operation system (2) deviates from the scheduled travel course (37) and changes the lanes, in order to visually give advance notice to the occupant of the vehicle, the symbol image (44, 44') of an arrow showing the travel course for the lane changing and the video of the virtual image (46, 46') Showing A Virtual Vehicle Of The Vehicle Traveling With The Arrow As A Path Are Displayed On The Display Screen Of Each Of The Display Devices.

A three dimensional road-vehicle modeling system includes a personal computer to store data on three dimensional road and virtual vehicle model, a real time simulator to run a simulation based on the data and model, and an actual test parts. A three dimensional course line of a vehicle is set on the three dimensional road. The simulator converts the three dimensional course line on the three dimensional road into a two dimensional course line on a two dimensional plane determined based on inclination of the three dimensional road and then converts the two dimensional course line into a straight course line corresponding to a three dimensional road model on the two dimensional plane based on hypothetical external force acting on the vehicle. These three dimensional road and virtual vehicle models are used to evaluate compatibility between the actual parts and the test vehicle.

The invention discloses a lane keeping method and system based on veDYNA (vehicle dynamics simulation software). The method includes the steps: S1 acquiring horizontal position deviation information of vehicles at preview points; S2 calculating expected steering wheel angles of the vehicles tracking target lanes according to the horizontal position deviation information and vehicle traveling information; S3, acquiring actual steering wheel angle information of the vehicles, and calculating auxiliary torque according to the expected steering wheel angles and actual steering wheel angles; S4 correcting steering wheel angles according to auxiliary torque information. According to the lane keeping method and system, real vehicles and driving conditions are simulated by the aid of virtual vehicle models and simulation environments built by the veDYNA, real-time hardware in-the-loop simulation of the vehicle models is achieved, actual driving conditions of the vehicles are analyzed and processed, so that suitable steering wheel angles are provided for drivers according to analyzing results, and the steering wheel angles are controlled to track driving of the vehicles along vehicle lane center lines in real time.

The invention discloses a self-learning method and system for traffic signal control. The method includes the steps that a virtual scene containing an intersection and a virtual annunciator is built according to the shape and geometric dimensions of an actual intersection and road canalization, virtual vehicle detectors are arranged on upstream entrances and upstream exits of all roads of the intersection, and the assigned number of virtual vehicles of different types are generated on all the roads; queuing states of the roads controlled by all phases are obtained through the virtual vehicle detectors; according to a preset lookup table, optimum phase green light timing corresponding to the current queuing states of the roads controlled by all the phases is obtained; after the optimum phase green light timing of all the phases is sequentially executed through the virtual annunciator, average delay of the virtual vehicles at the intersection in the current period is obtained, and an evaluation value in the lookup table is updated to finish self-learning of traffic signal control this time. Through the method and system, the average delay of vehicles at the intersection in actual traffic is effectively reduced, the traffic capacity of the intersection is improved, and the problem that vehicle delay at the intersection is difficult to obtain is solved.

The invention discloses a mixed reality automatic driving test method and a virtual test platform oriented to an intelligent network demonstration area. The test method comprises a virtual test, and the virtual test comprises the following steps: S1, creating a virtual vehicle driving environment, and establishing a vehicle dynamics model and a vehicle-mounted sensing system model; S2, enabling the vehicle dynamics model to operate according to an unmanned driving mode, and detecting the performance of the vehicle dynamics model; S3, enabling an obstacle vehicle to change, and testing an automatic control behavior corresponding to the vehicle dynamics model; S4, enabling the vehicle dynamics model to operate according to a manual driving mode, and testing the manual takeover operation performance of the vehicle dynamics model; and S5, recording test data, and analyzing the test data. According to the test method, real-time man-machine switching of the driving modes can be realized, andthus the vehicle driving safety is improved; and automatic driving trajectory planning, trajectory tracking and actuator control performance testing in a virtual intelligent network demonstration area scene can be realized, so that the testing cost can be reduced, and the testing efficiency can be improved.

The invention relates to the field of automatic driving, and discloses a test system and a test method used for an automatic-driving simulation system. The test system includes a first automatic-driving simulation system. The first automatic-driving simulation system includes a simulation environment generation module and a data conversion interface. The method includes: generating a vehicle simulation environment; reading sensor data in the simulation environment through the data conversion interface, and converting the same into sensor data which can be identified by the second automatic-driving simulation system; receiving the sensor data, which can be identified, by the second automatic-driving simulation system, generating a second control instruction according to the same and a set test target, and sending the same to the data conversion interface; receiving the second control instruction by the data conversion interface, and converting the same into a control instruction which can be identified by the simulation environment generation module; and applying the control instruction, which can be identified, to a virtual vehicle by the simulation environment generation module toenable the virtual vehicle to run in a virtual scene. Therefore, a test on the second automatic-driving simulation system is realized.

The invention relates to the automatic driving field and discloses a test method for an automatic driving simulation system. The test method comprises the following steps: a vehicle simulation environment is generated; through a data conversion interface, sensor data in the simulation environment is read and the data is converted into the sensor data which can be identified by a second automatic driving simulation system; the second automatic driving simulation system receives the identifiable sensor data and generates a second control instruction according to the sensor data and a preset testobject and sends the second control instruction to the data conversion interface; the data conversion interface receives the second control instruction and converts the second control instruction into a control instruction which can be identified by a simulation environment generation module; and the simulation environment generation module applies the identifiable control instruction to a virtual vehicle to enable the virtual vehicle to operate in a virtual scene, thereby realizing test of the second automatic driving simulation system.

The invention relates to an engine control model (ECM) calibration and verification system for an automobile. A virtual vehicle component and a virtual power assembly component are constructed by using an application program, a virtual vehicle platform and a virtual power assembly are constructed by using these virtual components, and correct and real-time interaction between the application program and ECM hardware is realized by taking a simulator as a virtuality and reality combined bridge, so that calibration and verification of an ECM can be realized in an interaction process. An entire simulation test stand has high performance, high operability and high portability, so that the ECM can be calibrated and verified easily, labor force and material resource costs of ECM calibration and verification work can be lowered, and the development quality of ECM calibration can be enhanced.

The invention relates to a driving simulator with a stereoscopic vision follow-up function. The driving simulator comprises a computer, a simulated driving platform, a projector and a vision follow-up device, wherein the computer is provided with driving simulation software, an output signal of the simulated driving platform is input to the computer, the vision follow-up device comprises a sight monitoring device, a rotating holder and a stepping motor which is used for driving the rotating holder to rotate, the sight monitoring device comprises a rotating-angle sensor which is used for monitoring the head rotation of a driver, an output signal of the sight monitoring device is input to the computer, the projector is arranged on the rotating holder, the stepping motor is controlled by the computer, and the output signal of the sight monitoring device can be used for changing an angle between a virtual camera and a virtual vehicle through the computer. According to the driving simulator disclosed by the invention, stereoscopic vision is supplied for the driver in the driving simulator, and the stereoscopic vision is not in distortion.

A portable sensor unit for capturing motion and / or other data may be securely mounted on objects such as a user's limb, a vehicle, or other items. The sensor unit may then collect motion and / or other data from the object to which it is affixed, and may provide this data to a data logger which stores the data. The data logger may subsequently communicate the data to a gaming system which may tailor the motion characteristics of a virtual object to resemble those of the real-world object from which the motion data was captured. Thus, a user can (for example) capture motion data from a vehicle, with this data being supplied to a video gaming unit which provides a virtual vehicle having the same acceleration / deceleration, handling, and other characteristics.

The embodiments of the invention provide an automatic driving simulation test system and method. The sensor target information, transmitted by a virtual scene module, of a target virtual scene is obtained through a sensor module in the simulation test system, the state parameters of a virtual vehicle in a simulation test process are obtained through a positioning module, a vehicle actuator modulegenerates an automatic driving instruction aiming at the state parameters according to the sensor target information, a dynamics module controls the virtual vehicle to execute a simulation test corresponding to the automatic driving instruction to generate a simulation test result, then a state feedback module generates test feedback information by adopting the simulation test result, and a closed-loop simulation test is formed. According to the simulation test system, functions executed by different modules in the automatic driving process of the vehicle are simulated and tested, the reliability and the operation efficiency of the automatic driving test can be effectively improved, developers can conduct technical research and development under the support of credible data, and the efficiency of algorithm iteration in mass production is improved.