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首页> 外文会议>FISITA World Automotive Congress >REAL-TIME SPEED ALERT SYSTEM BASED ON THE ROAD GEOMETRIC PARAMETERS
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REAL-TIME SPEED ALERT SYSTEM BASED ON THE ROAD GEOMETRIC PARAMETERS

机译：基于道路几何参数的实时速度警报系统

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The alert system developed consists of a real time electronic device for the driver information about the optimum driving velocity, taking into account driving safety criteria. These criteria have been defined considering the geometric characteristics of the road and the dynamic behaviour of the vehicle. A previous analysis of the road is required. Along this analysis, several road variables have to be calculated, such as: radius, ramp, slope, traffic signals location, way in and way out secondary roads location and their characteristics, lanes number and geometric visibility distance. For carrying out this task, a vehicle with several accurate sensors has been built. This vehicle contains the following on board electronic devices: a no contact velocity sensor, a gyroscopic platform, a video digital camera and a recording system. The definition of the optimum velocity is based on the geometric parameters of the road, and on a vehicle dynamic model (14 degrees of freedom), for the simulation of the vehicle behaviour on the measured road. After the definition of the optimum velocity, the problem of the in real time vehicle location has to be solved. For it, a GPS (Global Positioning System) device will be installed in the vehicle. This device, in combination with a digital map and the vehicle speed, calculates the vehicle location with an error less than 5 meters. The digital map is calculated during the project, using the sensor vehicle previously described. Besides, the algorithm developed for the generation of the driver alert information takes into account the vehicle transverse location in the road lane, specially if the border line is crossed. The lane lines detection is based on the in real time analysis of the images collected by a digital camera. A system based on a FPGA hardware, with an algorithm developed by INSIA, carried out this analysis. Finally, all the information from the different devices has to be integrated in a platform. The inputs for the system are: the vehicle location (GPS and digital map), the current vehicle velocity, and the lane vehicle transverse location. Considering the optimum driving velocity previously calculated, the system generates an output (acoustic and visual) for alerting to the driver about this optimum velocity. This system has been developed, and a prototype of it is been evaluated with different vehicles and drivers.
机译：警报系统由实时电子设备组成，用于驾驶员信息的最佳驱动速度，考虑到驾驶安全标准。已经定义了这些标准，考虑到道路的几何特征和车辆的动态行为。需要对道路进行以前的分析。沿着这种分析，必须计算几种道路变量，例如：半径，斜坡，斜坡，交通信号位置，路径进出次级道路位置及其特征，车道数量和几何可见度距离。为了执行这项任务，已经建立了具有多种精确传感器的车辆。该车辆在船上的电子设备上包含以下内容：无接触速度传感器，陀螺平台，视频数码相机和记录系统。最佳速度的定义基于道路的几何参数，以及在车辆动态模型（14度的自由度）上，用于在测量的道路上模拟车辆行为。在定义最佳速度之后，必须解决实时车辆位置的问题。为此，GPS（全球定位系统）设备将安装在车辆中。该设备与数字地图和车速组合，计算车辆位置，误差小于5米。使用先前描述的传感器车辆在项目期间计算数字地图。此外，为生成驱动程序警报信息开发的算法考虑到道路车道中的车辆横向位置，特别是如果边界线交叉。车道线检测基于由数码相机收集的图像的实时分析。基于FPGA硬件的系统，具有由INSIA开发的算法进行了此分析。最后，必须在平台中集成来自不同设备的所有信息。系统的输入是：车辆位置（GPS和数字地图），当前的车辆速度和车道车辆横向位置。考虑到先前计算的最佳驱动速度，系统产生输出（声学和视觉），以提醒驱动器关于该最佳速度。该系统已经开发出来，用不同的车辆和司机评估它的原型。

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