基于UE4的在线驾驶仿真系统设计与实现

驾驶仿真系统在交通安全研究中发挥着重要作用,但目前仍存在三维道路建模受限、仿真场景还原度不高等问题;研究采用虚幻引擎开发仿真功能模块,根据道路几何线形与交通流原始资料,能高效搭建出驾驶仿真场景;采用像素流送技术将视频帧发送到前端,设置硬件设备的轴属性映射,支持模拟驾驶外部信号输入,并实时将驾驶行为数据存入数据库,设计了一种轻量化、自动化、智能化的在线驾驶仿真信息管理与可视化系统;系统主要实现了道路自动化建模、人-车-路-环境信息管理、车道级真实交通流场景还原、在线模拟驾驶与数据可视化等功能;经测试,系统部署后能在Web端稳定运行,弥补了现有驾驶仿真系统的不足,为实验人员提供轻量高效的驾驶仿真服务。

Design and Implementation of Online Driving Simulation System Based on UE4

Driving simulation systems play an important role in road safety research. However, there are still problems such as the difficulty of digital road modeling and low reduction of simulation scenes. The system uses Unreal Engine to develop simulation function modules, which can efficiently build a driving simulation scene based on the road geometry and the original traffic flows data. It uses pixel streaming technology to send video frames to the front-end page, sets the axis attribute mapping of the hardware device to support the analog drive external signal input, and stores the real-time driving behavior data onto the database. The online driving simulation information management and visualization system is lightweight, automated, and intelligent, which mainly realizes the functions of road automation modeling, human-vehicle-road-environment information management, lane-level real traffic flow scene restoration, online simulation driving and data visualization. The test results show that the system can run stably in the web end after deployment, making up for the shortcomings of the existing driving simulation system, and providing lightweight and efficient services for the experimental personnel.