PowerPoint Presentation

COLLISION WARNING &AVOIDANCE SYSTEMArjun HareendranATE13003

Casual factors and countermeasures of rear-end collisionsCollision warning and avoidance systems aim to avoid the risk represented by an obstacle in the vehicle path.

The system is composed of a sensor to measure the distance, angular position and relative speed of obstacles.

An elaboration unit identifies the obstacles on the trajectory

Commonly used technologies involves laser and microwave radars, which are more suitable for adverse weather conditions (eg. Fog) than other technology

Two different approaches in order to manage the user interaction:

Limited to warning messages issued by the system

Automatic braking intervention in case the driver fails to react.COLLISION WARNING AND AVOIDANCE SYSTEMS A forward collision warning system operates, generally in the following manner:

A sensor installed at the front of the vehicle constantly scans the road ahead for vehicles or obstacles.

When an obstacle is found, the system determines whether the vehicle is in imminent danger of crashing into it, and if so, a collision warning is given to the driver.

Most systems are non-co-operative, i.e. the detection is independent of whether other vehicles on the road are equipped with collision avoidance devices or not.

An alternate technology relies on vehicle to vehicle communication to exchange information on vehicles presence, location, lane of travel, and speed, among other factors.

In addition to the front-end sensor, in this case vehicles require a rear end transponder as well, since communication, and therefore detection, only occurs among equipped vehicles.

Intersection collision avoidance

It provides a warning to the driver when a potential for collision exists at an intersection.

Due to the complexity of the intersection collision problem, it is anticipated that a cooperative vehicle infrastructure solution will be necessary.

Complexities include detecting vehicles on intersecting roadways and determining the intent of these vehicles in terms of slowing down, turning and potentials for violations of traffic control devices.

Research efforts so far have used two different technologies:

A camera placed at the side of the frontal part of the vehicle, able to see oncoming vehicles when they are 25-20m away from the junction

a short range car to car communication system

Current prototypes transfer the intersection image inside the car and project it to the driver by means of an in-vehicle screen.

SOME STATISTICS

FRONT CRASH PREVENTIONLANE DEPARTURE WARNING AND PREVENTIONBLIND SPOT DETECTIONPARK ASSIST AND BACKOVER PREVENTION

AVAILABLE IMPORTANT SYSTEMSExamples:Mercedes-Benz - COLLISION PREVENTION ASSISTToyota - INTEGRATED SAFETYTHANK YOU