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.

Real-time collision avoidance with whole body motion control for humanoid robots

Abstract: We propose a self collision avoidance system that superposes trajectories in order not only to protect the robot's hardware but also to enable continuous motions. The system runs in real-time so that the robot can work in an uncertain environment. It is based on virtual forces between close segments of the robot. The avoidance movements are blended with a whole body motion control in order to change the priority between target reaching and collision avoidance. The blending is performed autonomously without the necessity of external switching. Our method works both while the robot is standing and walking. Reaching motions from the front to the side of the body without the arm colliding with the body are possible. Even if the target is inside the body, the arm stops at the closest point to the target outside of the body. Our method can be used for other applications: We apply it to realizing a "body schema" and for "occlusion avoidance."

Vehicle alert system utilizing communication system

Abstract: A collision avoidance system for a vehicle includes a communication device disposed at a carrier exterior and remote from the vehicle. The communication device is operable to communicate information regarding location and motion of the communication device carried by the carrier relative to the vehicle. A receiver receives a communication from the communication device, and a processor processes information communicated by the communication device. The processor, responsive to processing communicated information, determines the location and motion of the communication device relative to the vehicle. A side sensing device is disposed at a side of the vehicle and operable to capture data, which is processed to determine approach of the carrier to the vehicle from rearward of the vehicle. Data captured by the side sensing device and information communicated by the communication device are processed by the processor to determine existence of a potential collision between the carrier and the vehicle.

Formation surveillance and collision avoidance

Abstract: A formation collision avoidance system includes a Traffic Alert and Collision Avoidance System (TCAS) having a passive mode and an active mode. The passive mode enables several members of an aircraft formation to fly without actively interrogating using TCAS while only one or few formation members are actively interrogating. Formation members in passive mode maintain awareness of current air and ground traffic conditions using networked surveillance information provided over a communications link between formation members in active mode and formation members in passive mode. The networked surveillance information includes positional and intent information of current air/ground traffic obtained from ADS-B broadcasts and replies to the actively interrogating members of the formation. The communications link utilizes Station Keeping Equipment (SKE) already existing on certain aircraft.

CAR-2-X and Pedestrian Safety

Abstract: Traffic accidents involving pedestrians or cyclists cause thousands of fatalities and serious injuries every year. In this article, we present an innovative approach for a collision avoidance system that seeks to reduce these accidents. We also discuss the different architectural approaches utilizing ad hoc and/or cellular technologies and different processing setups and present a physical analysis of the system time available between detection, warning, and reaction to give an overview of the time constraint.