Transcript HANDFREE DRIVING

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This seminar paper is based upon the project work
being carried out by the collaboration of DelphiDelco
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 veh
icle
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)
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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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