Showing papers on "Rear-end collision published in 2006"

Vehicle equipped with back door and airbag device for rear-end collision and airbag device for rear-end collision of vehicle equipped with back door

Abstract: PROBLEM TO BE SOLVED: To provide an airbag device for rear-end collision of a vehicle equipped with a back door capable of exerting an impact absorbing function and an occupant restraining function by spreading and inflating an airbag cushion in a position between the head of the occupant and the back door certainly even in case the seat back moves backward with the impact in the event of rear-end collision. SOLUTION: The airbag device to work against rear-end collision of the vehicle includes a movement restricting member 9 to restrict the backward movement of the seat back 53 in order to generate a spreading/inflating space for the airbag cushion. Concretely the movement restricting member 9 is formed from rack members 91 and 92 protruding toward the inside of the cabin (toward the center across the vehicle width) from the trim surfaces constituting cabin side walls 10 located behind the seat back 53. COPYRIGHT: (C)2006,JPO&NCIPI

Rear end collision mitigation system for an automotive vehicle

Abstract: The present invention relates to a system (1) and method for autonomous rear impact mitigation in a host vehicle (2) having a brake system (4) and a steering system (5). The relative motion parameters between the host vehicle (2) and a second vehicle (11) behind the host vehicle (2) are established. While the host vehicle (2) has a positive velocity, the brake system (4) of the host vehicle (2) is selectively activated based on the determined relative motion parameters.

Braking control device

Abstract: PROBLEM TO BE SOLVED: To provide a braking control device capable of preventing occurrence of any secondary accident in a rear end collision, and reducing an impact applied to one's own vehicle. SOLUTION: The braking control device for controlling the braking force of a brake device 10 provided on a wheel of a vehicle comprises a collision detection means 41 for detecting the collision of the vehicle, and an acceleration detection means 43 for detecting the acceleration in the longitudinal direction of the vehicle. After the collision detection means 41 detects the collision, the braking force is generated in the braking device 10 when the acceleration detected by the acceleration detection means 43 is below the predetermined threshold. COPYRIGHT: (C)2008,JPO&INPIT

Vehicular rear part structure

Abstract: PROBLEM TO BE SOLVED: To sufficiently disperse a collision load at rear end collision of a vehicle with another vehicle having high height. SOLUTION: In the vehicular rear part structure 10, a rear floor side member 28 is extended in a generally vehicular fore-and-aft direction, and a cross member 22A is extended in a generally vehicular width direction on an upper side than the rear floor side member 28. A frame 36 couples the rear front side member 28 and the cross member 22A in the generally fore-and-aft direction, and an absorber 38 is coupled to the frame 36. Therefore, the collision load inputted at the time of the rear end collision of the vehicle with another vehicle having high height can be dispersed to the cross member 22A, the frame 36, the rear floor side member 28, and the absorber 38, and can be sufficiently dispersed. COPYRIGHT: (C)2007,JPO&INPIT

Method for identifying rear end collision-critical situations in lines of traffic

Abstract: The invention relates to a method for identifying rear end collision-critical situations in lines of traffic during which at least the distance (xrel) from an object (2) located, in the direction of travel, in the area in front of a vehicle (1) and the proper speed (vego) of the vehicle (1) are detected and monitored in order to determine if the vehicle (1) is located in a line of traffic susceptible to rear end collisions. The time interval (TH) from the object (2) is determined as the quotient consisting of the distance (xrel) of the object (2) from the vehicle (1), and of the proper speed (vego) of the vehicle. It is verified whether the determined time interval (TH) during a predeterminable time span is located within a predeterminable range. This makes it possible to reliably identify when the vehicle is traveling in a line of traffic. Also monitored is the braking acceleration of the object that significantly influences the risk of a rear-end collision.

Safety assessment of a rear-end crash avoidance system

Abstract: This paper assesses the safety impact of an automotive collision avoidance system (ACAS) at three levels: exposure and response to driving conflicts, involvement in severe near-crashes, and unintended consequences. The ACAS performs forward crash warning and adaptive cruise control functions. The safety assessment is based on objective data collected from a field operational test by sixty-six volunteers who drove ten equipped vehicles on public roads over 158,000 km. This paper focuses on estimating the safety benefits of this integrated system based on driver exposure and response todriving conflicts, with and without ACAS assistance. Generally, the ACAS reduced driver exposure to lead-vehicle-decelerating and lead-vehicle-stopped conflicts at speeds greater than or equal to 56 km/h. Moreover, the ACAS has the potential to prevent between 133,000 (3%) and 1,039,000 (26%) rear-end crashes annually in the United States if fully deployed in the light vehicle fleet (e.g., passenger cars, vans, minivans, sport utility vehicles, and light trucks). For the covering abstract see ITRD E134653.

Collision control device for vehicle

Abstract: PROBLEM TO BE SOLVED: To minimize damage by improving an absorbing effect of collision energy when own vehicle collides against an obstruction such as another vehicle and a pedestrian SOLUTION: It is possible to improve the absorbing effect of the collision energy by preventing the own vehicle running on the other vehicle, the own vehicle running under the other vehicle and a bumper beam of the own vehicle passing through the indoor of the other vehicle as a sub bumper beam of the own vehicle is lifted up and down by a sub bumper beam lifting mechanism 113 in correspondence with bumper height (side sill height) of the other vehicle estimated by a bumper height estimation means (or side sill height estimation means) when it is determined impossible to avoid frontal or rear end collision (or lateral collision) against the other vehicle by this collision control device for the vehicle It is also possible to improve the absorbing effect of the collision energy by efficiently collapsing a front side frame and minimizing the damage of the own vehicle and the other vehicle by reducing deforming rigidity of the front side frame of the own vehicle by a front side frame rigidity variation mechanism 114 COPYRIGHT: (C)2007,JPO&INPIT

Analysis of the driver's workplace in coaches related to passive safety

Abstract: The risk to the bus and coach driver is considerably greater than that to the passenger in specific types of accident. Moreover, the protection of the driver is critical in maintaining the control of the vehicle and speeding up the evacuation of passengers. It would, therefore, be desirable for the driver's workplace to present at least the same degree of passive safety as that of the passenger. This paper presents research carried out by INSIA-UPM related to the improvement of the driver's workplace safety. Starting from accident analysis, the necessity of improving the passive safety of drivers is analysed. The main parameters that affect the driver's safety and some possible new tests are presented to protect the driver in the worst cases (front and rear end collision against trucks). Finally, some technological advances which we consider could be gradually incorporated in coaches are presented.

Method for avoiding overtaking collision on tail of car in running

Abstract: A method for preventing rear end collision of car features that the deceleration prewarning lamp arranged on the rear end of car is electrically connected with a switch arranged on the throttle pedal, and when the foot of the driver is separated from the throttle pedal, the switch is turned on and the deceleration prewarning lamp is in turn turned on for prompting the driver of following car

Vehicle infrared anti-collision automatic brake controller

Abstract: The rear end collision takes place frequently now, and it is documented that the technology defending rear end collision has developed from research to experiment oversea. The amount of the accident of rear end collision increases sharply with the number of the car increasing rapidly. However, the automatic barking controlling system defending from rear end collision isni»t provided to the car. With the analysis of the rear end collision, we invent the automatic barking system of beaming and incepting infrared ray to avoid the rear end collision. The automatic barking system defending from rear end collision recurs to electric shining registration mark provided with beaming and incepting system. The invention relates to the infrared beaming and incepting automatic barking system which can not only work on the road but also automatically check the dependability of the system via the functional switch and handy remote control checking box.

Automatic Localization of Backward Collision of Vehicles Using a Camera

Abstract: Lots of rear end collisions due to driver inattention have been identified as a major automotive safety issue. A short advance warning can reduce the number and severity of the rear end collisions [4]. This paper describes how to avoid rear end collision when vehicles are moving in the reverse direction. In order to avoid many of the parking lot accidents, our system provides a Backward Collision Warning (BCW) - a new vehicle/obstacle detection method by calculating the area of the obstacle and comparing it to the stored threshold value. The images of the obstacles/objects are captured by monochrome vision camera when a car is moving in the reverse direction. The BCW system uses Digital Image Processing techniques to track the object at the rear end of the vehicle [2], Camera calibration is used to get the distance of the obstacle at the rear end. Kalman filters are used for tracking the obstacles. Secondly bounding box is used to bind(separate each objects by using a rectangular border based on the threshold) the objects. Region properties are used to estimate the area. After determining the area of the obstacle/object, TTC (Time to Collision) is calculated which triggers an alarm system that makes the driver attentive. The proposed technique is tested on our own generated data sets on parking lot and busy roads. This methodology is found to be efficient and we are planning to test our proposed implementation on road for Real Time application.