Topic
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.
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Patent•
26 Sep 2015
TL;DR: In this paper, an in-vehicle compute device is configured to determine a proximity between a door of a vehicle and a structure while the door is being opened and activate a door collision avoidance system of the vehicle to slow or restrict the opening of the door in response to a determination that the proximity of a door to the structure is within a proximity threshold.
Abstract: Technologies for reducing vehicle door collisions include an in-vehicle compute device configured to determine a proximity between a door of a vehicle and a structure while the door is being opened and activate a door collision avoidance system of the vehicle to slow or restrict the opening of the door in response to a determination that the proximity of the door to the structure is within a proximity threshold. The door collision avoidance system may include one or more electro-magnets, one or more actuators, and/or one or more electro-active polymer devices. The in-vehicle compute device may also control the operation of the door based on a context of the vehicle.
3 citations
25 Oct 2012
TL;DR: The design and realization of a collision avoidance system for a novel car door assistance system, the smart car door, which increases the door entrance area in tight parking lots, which drastically improves the ingress/egress to/from a vehicle.
Abstract: Driver assistance systems in today's cars assist drivers when the car is in motion. However, there is relatively less, to almost no work on assistance systems when the car is stationary. This paper focuses on such a system, and describes the design and realization of a collision avoidance system for a novel car door assistance system, the smart car door. An omnidirectional camera is attached to each side-view mirror of a car, and the fold-in fold-out movement of the mirror is used to generate 3D information about static obstacles next to the car based on a motion stereo approach. The car door controller uses the sensor data to compute collision-free door opening paths, and the two-hinge kinematic system of the smart car door enables to move the door around static obstacles. The latter increases the door entrance area in tight parking lots, which drastically improves the ingress/egress to/from a vehicle. These are enhancements to currently available systems that only indicate the presence of obstacles next to the car. Experiments on a fully realized prototype demonstrated a robust generation of 3D information about obstacles next to the car. A study with 20 test users showed that our system strongly supports the users to avoid collisions when operating the door.
3 citations
Patent•
31 May 2017
TL;DR: In this paper, an electric vehicle chassis collision avoidance system composed of a rear end chassis, a middle end chassis subsystem, and a front end subsystem is presented, where a buffer component for buffering is arranged between the rear collision avoidance beam and the truss frame.
Abstract: The invention relates to the field of vehicles, and provides an electric vehicle chassis collision avoidance system. The system is composed of a rear end chassis subsystem, a middle end chassis subsystem and a front end chassis subsystem. The rear end chassis subsystem comprises a rear collision avoidance beam, a rear energy absorption box, a truss frame, a buffer spring and a buffer shaft which are connected in sequence, wherein the buffer spring and the buffer shaft are arranged on the truss frame. A passenger frame is arranged on the top of a stereo case and connected with the rear collision avoidance beam through buffer beams, the two buffer beams are symmetrically arranged on the rear collision avoidance beam, and a buffer component for buffering is arranged between the rear collision avoidance beam and the truss frame. The front end chassis subsystem comprises a front energy absorption box and a front collision avoidance beam. The middle end chassis subsystem comprises a power battery pack, a stereo case and longitudinal beams arranged on the two sides of the stereo case. The effect of ensuring the safety of passengers in a vehicle when the vehicle is collided by a vehicle behind is improved with the rear chassis subsystem as a main energy absorption zone and a rear end passive collision avoidance structure as the basis of a force transmission path.
3 citations
Patent•
28 May 2014
TL;DR: In this article, a subway auxiliary collision avoidance system and a subway collision avoidance method are presented. And the collision avoidance scheme is synchronously performing signal sending and signal collecting, namely sending and collecting signals through receiving and sending combination; performing signal detection by a signal processing unit in real time for distance measuring; when reaching an alarming distance, performing audio alarming by using a buzzer through a pre-warning display terminal.
Abstract: The invention relates to a subway auxiliary collision avoidance system and a subway auxiliary collision avoidance method. The collision avoidance system mainly comprises a signal sending device, a signal receiving device, a vehicle interface module, an auxiliary sensing module, a vehicle-mounted host, a power source box power supply circuit, a driving cab collision avoidance warning terminal and a self-inspection and fault diagnosis module. The collision avoidance method includes synchronously performing signal sending and signal collecting, namely sending and collecting signals through receiving and sending combination; performing signal detection by a signal processing unit in real time for distance measuring; when reaching an alarming distance, performing audio alarming by using a buzzer through a prewarning display terminal. Receiving and sending combination technology refers to that the signal sending device and the signal receiving device share a sensor. Compared with the prior art, the subway auxiliary collision avoidance system and the subway auxiliary collision avoidance method have the advantages that bidirectional distance measuring can be realized, and distance measuring accuracy is high.
3 citations
20 Apr 2021
TL;DR: In this paper, an automatic ADS-B based system for separation assurance and collision avoidance at tactical level and for enhanced Remote Pilot's Situational Awareness at emergency level is presented and the numerical results of the application of the designed system to conflict and collision scenarios with respect to surrounding traffic are presented and discussed.
Abstract: In this paper, an automatic ADS-B based system for Separation Assurance (at tactical level) and Collision Avoidance (at emergency level) and for enhanced Remote Pilot’s Situational Awareness is conceptually presented and the numerical results of the application of the designed system to conflict and collision scenarios with respect to surrounding traffic are presented and discussed. The test results address some numerical validation campaigns carried out by means of fast-time simulations in Matlab/Simulink software environment. In the paper, therefore, first the conceptual design of the proposed system is reported and, then, the description is provided of the numerical validation campaigns that have been carried out, with particular reference and specific details about some relevant test cases. The obtained results are reported and discussed, in order to emphasize the performances and limitations of the proposed system and to indicate the ideas for its further development and improvement. Both Collision Avoidance and Traffic Avoidance (Self-Separation) tests are considered in the paper, in order to provide an outline of the proposed system functionalities and of the overall coordination of the different functions that have been implemented in the system.
3 citations