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This seminar paper is based upon the  project  work being carried out by the collaboration of Delphi-Delco Electronics (DDE) and General Motors Corporation.It was named the Automotive Collision Avoidance Systems (ACAS) field operation program to build the tomorrow’s car.It used  latest  technologies  of radar sensing to prevent collision. Video imaging to track its path, and uses DGPS for locating the position of the vehicle on the road.It completely utilized the  latest  technologies  in  Robotics as obstacle sensing,tracking and identification. 

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It is the Automotive Collision Avoidance System. Aimed at integration of the latest technology

Forward Collision Warning (FCW) and Adaptive Cruise Control (ACC).

Now the Field Operation tests are being carried out.

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It is the Forward Collision Warning system.

It uses the long range forward-looking radar sensor.

It incorporates the single active forward-looking radar sensor augmented with yaw rate sensor

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The radar uses 76GHz signals. Identifies the track up to 150meters for any stationary or moving obstacle. Reduce the need for drivers to manually

adjust speed with Headway Alert automatically manages vehicle speed to maintain a time gap

(following distance) set by the driver.

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The Adaptive Cruise Control (ACC) ◦ Detects and tracks motor vehicles in its forward

path, ◦ Maintains the selected cruise speed when there

is no vehicle limiting its forward motion, ◦ Maintains a selected headway between the

host vehicle and a lead vehicle, which is traveling slower than the selected cruise speed and thus limiting the forward motion of the host vehicle.

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The forward vision sensor to provide lane tracking to help distinguish in-path from out-of-path targets

a video camera mounted behind the windshield of the vehicle to estimate road shape, lane width, vehicle heading and lateral position in the lane.

Uses a 233MHz Pentium MMX processor. Adequate road shape estimate of at least

75 meters ahead of the vehicle

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Road map database fed to the CPU of the vehicle.

The information from the DGPS + road map database fused in DATAFUSION SYSTEM.

It provide data of path and position of the vehicle.

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GPS mounted on a car

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Sample road map

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Data from ACC + radar sensor fused and fed to processor.

Processor data controls actuators.

For speed less than cruise speed, the driver is informed.

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Conveniently manages vehicle speed and headway gap.

Cruise control more useable in most traffic conditions resulting in a more relaxed

driving experience. Operates under wide range of

environmental conditions (dirt, ice, day, night, rain, or fog).

Low false alarm rate.

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Radar-based sensing for optimal performance

Sensor hidden behind front grille or fascia Best available detection and tracking

performance Manages vehicle speed and headway gap

using throttle control and limited braking Excellent following distance and speed

control

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Robotics is the part of Electronics Engineering , which exploits each aspect of Electronics and Mechanical Engineering. The development of robotics have led to the ACAS program. On the completion of this program vehicles will change the phase of driving; a “hand-free” driving.

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THANK YOU

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