Collision avoidance system

About: Collision avoidance system is a research topic. Over the lifetime, 1788 publications have been published within this topic receiving 23667 citations.

Safe Technology with a Novel Rear Collision Avoidance System of Vehicles

Abstract: This study aims to reduce the severity of injuries caused by and the frequency of rear-end vehicle collisions. A better collision prediction method is proposed by means of millimeter-wave radar sensors able to rapidly detect potential collisions and alert drivers. Implementation of the system would bring about a reduction in accidents and potentially reduce the severity of the accidents that cannot be avoided. The proposed collision avoidance system adopted millimeter-wave radar sensors to collect information on vehicle’s rear surroundings. The designed experimental device has several unique features. The device has a wide monitoring range, incorporates a continuous detection process, and contains a rapid warning system. A series of real-world experiments were performed on cars (Model: Tercel 1.5, Toyota) to demonstrate the monitoring efficiency and warning frequency of this device under several operating conditions. This study furthered the development of a safe technology for avoidance of rear-end collisions, and this offers a novel system which can be used in a variety of vehicles to reduce the frequency of rear-end vehicle collisions.

Camera vs. Cooperative VRU Collision Avoidance

Abstract: Around a third (29.7%) of all accident scenarios between pedestrians and cars occur in “non-line-of-sight” (NLOS) situations, i.e., when a pedestrian crosses the street with visual obstruction, like a parked car. On the other hand, current products for active collision avoidance for pedestrians and other vulnerable road users (VRUs) require a “line-of-sight” (LOS) between the vehicle and VRUs. Therefore, these systems might fail to detect a VRU early enough in NLOS situations. Cooperative collision avoidance systems are a promising approach to also handle NLOS scenarios. In a cooperative collision avoidance system, VRUs are equipped with a mobile device, like a smartphone, that recognizes the VRU's movement and exchanges information with the car via wireless communication, like 5G or DSRC. An open question is for which accident scenarios such systems show an improvement over systems that require LOS. In this article, we perform a simulation-based performance comparison between a cooperative and a camera-based collision avoidance system in a NLOS test scenario from the European New Car Assessment Programme (Euro NCAP) for different VRU types and car speeds. We compare the performance of both collision avoidance systems in terms of the collision detection probability and the time that a possible collision can be detected in advance.

Feasibility of a Passive Collision Avoidance System (PCAS) Based on Staring Infrared Sensors

Abstract: : This report finds that a light weight, passive collision avoidance (PCAS) system based on uncooled LWIR sensors is feasible for Hunter/Predator class UAVs. The candidate PCAS system is analyzed using a statistical measure based on warning time provided. Typically warning times of 10s of seconds could be provided with very low probability of missed detection due to encounters with light aircraft under contrast reversal conditions.

Aircraft ground collision avoidance system

Abstract: An improved ground collision avoidance system and method is provided for aircraft driven during ground operations by electric taxi drive systems. One or more monitoring devices employing scanning LiDAR technology may be mounted in exterior locations on or near aircraft landing gears or aerodynamically in locations on the aircraft fuselage selected to generate panoramic three-dimensional images from any point of view within or without the aircraft as the aircraft is driven independently within an airport ramp area. The point of view images are transmitted in real time to displays in the aircraft cockpit and may be transmitted to displays outside and remote from the aircraft, allowing the pilot and airport personnel to monitor the aircraft moving within the ramp environment and to respond quickly to control the aircraft's electric taxi drive system-powered ground travel to avoid and prevent a potential collision.

Intelligent transportation car -mounted device based on laser radar

Abstract: The utility model provides an intelligent transportation car -mounted device of using laser radar, the utility model relates to an intelligent transportation system, its aim at solving current prevents impact system exist survey, detection region is less, the service of its high in the clouds intelligent transportation and wireless technology exist respectively actually to be experienced relatively poorly and technical problem such as potential safety hazard. The utility model discloses a structure includes the sensor: survey car status signal and export feedback signal, the vehicle data bus: receiving sensor's feedback signal exports car state clock signal, long -range information communication unit, long -range information control unit still with vehicle data bus connection, visible light short -path signal transceiver: carry out the information interaction with long -range information control unit, still include the laser radar with long -range information communication unit connection. The utility model is used for automobile collision avoidance system.