1,477 research outputs found

    Intelligent automatic overtaking system using vision for vehicle detection

    Get PDF
    There is clear evidence that investment in intelligent transportation system technologies brings major social and economic benefits. Technological advances in the area of automatic systems in particular are becoming vital for the reduction of road deaths. We here describe our approach to automation of one the riskiest autonomous manœuvres involving vehicles – overtaking. The approach is based on a stereo vision system responsible for detecting any preceding vehicle and triggering the autonomous overtaking manœuvre. To this end, a fuzzy-logic based controller was developed to emulate how humans overtake. Its input is information from the vision system and from a positioning-based system consisting of a differential global positioning system (DGPS) and an inertial measurement unit (IMU). Its output is the generation of action on the vehicle’s actuators, i.e., the steering wheel and throttle and brake pedals. The system has been incorporated into a commercial Citroën car and tested on the private driving circuit at the facilities of our research center, CAR, with different preceding vehicles – a motorbike, car, and truck – with encouraging results

    Vehicular Instrumentation and Data Processing for the Study of Driver Intent

    Get PDF
    The primary goal of this thesis is to provide processed experimental data needed to determine whether driver intentionality and driving-related actions can be predicted from quantitative and qualitative analysis of driver behaviour. Towards this end, an instrumented experimental vehicle capable of recording several synchronized streams of data from the surroundings of the vehicle, the driver gaze with head pose and the vehicle state in a naturalistic driving environment was designed and developed. Several driving data sequences in both urban and rural environments were recorded with the instrumented vehicle. These sequences were automatically annotated for relevant artifacts such as lanes, vehicles and safely driveable areas within road lanes. A framework and associated algorithms required for cross-calibrating the gaze tracking system with the world coordinate system mounted on the outdoor stereo system was also designed and implemented, allowing the mapping of the driver gaze with the surrounding environment. This instrumentation is currently being used for the study of driver intent, geared towards the development of driver maneuver prediction models

    Motorcycles that see: Multifocal stereo vision sensor for advanced safety systems in tilting vehicles

    Get PDF
    Advanced driver assistance systems, ADAS, have shown the possibility to anticipate crash accidents and effectively assist road users in critical traffic situations. This is not the case for motorcyclists, in fact ADAS for motorcycles are still barely developed. Our aim was to study a camera-based sensor for the application of preventive safety in tilting vehicles. We identified two road conflict situations for which automotive remote sensors installed in a tilting vehicle are likely to fail in the identification of critical obstacles. Accordingly, we set two experiments conducted in real traffic conditions to test our stereo vision sensor. Our promising results support the application of this type of sensors for advanced motorcycle safety applications

    A Study on Recent Developments and Issues with Obstacle Detection Systems for Automated Vehicles

    Get PDF
    This paper reviews current developments and discusses some critical issues with obstacle detection systems for automated vehicles. The concept of autonomous driving is the driver towards future mobility. Obstacle detection systems play a crucial role in implementing and deploying autonomous driving on our roads and city streets. The current review looks at technology and existing systems for obstacle detection. Specifically, we look at the performance of LIDAR, RADAR, vision cameras, ultrasonic sensors, and IR and review their capabilities and behaviour in a number of different situations: during daytime, at night, in extreme weather conditions, in urban areas, in the presence of smooths surfaces, in situations where emergency service vehicles need to be detected and recognised, and in situations where potholes need to be observed and measured. It is suggested that combining different technologies for obstacle detection gives a more accurate representation of the driving environment. In particular, when looking at technological solutions for obstacle detection in extreme weather conditions (rain, snow, fog), and in some specific situations in urban areas (shadows, reflections, potholes, insufficient illumination), although already quite advanced, the current developments appear to be not sophisticated enough to guarantee 100% precision and accuracy, hence further valiant effort is needed

    Systems for Safety and Autonomous Behavior in Cars: The DARPA Grand Challenge Experience

    Get PDF

    Guest Orientation, Assistance, and Telepresence Robot

    Get PDF
    The project was focused on a mobile research platform for autonomous navigation components and sensors vital to its autonomous interaction with its environment. The goal of this project was to create such a mobile robotic platform, which would in turn be capable of acting as a fully autonomous tour guide for the WPI campus. The project combined the robust capabilities of a Segway. Robotic Mobility Platform with the cutting edge adaptability of the Robot Operating System software framework. The robot will work in conjunction with school staff to provide video tour information as part of an enhanced tour experience. The project is a highly visible representation of WPI\u27s unique MQP program and its ability to prepare engineers capable of solving real world problems

    Guest Orientation, Assistance, and Telepresence Robot

    Get PDF
    The project was focused on a mobile research platform for autonomous navigation components and sensors vital to its autonomous interaction with its environment. The goal of this project was to create such a mobile robotic platform, which would in turn be capable of acting as a fully autonomous tour guide for the WPI campus. The project combined the robust capabilities of a Segway Robotic Mobility Platform with the cutting edge adaptability of the Robot Operating System software framework. The robot will work in conjunction with school staff to provide video tour information as part of an enhanced tour experience. The project is a highly visible representation of WPI\u27s unique MQP program and its ability to prepare engineers capable of solving real world problems
    corecore