1. Project on
“ADAPTIVE FLEXIBLE HEADLIGHTS SYSTEM FOR FOUR WHEELER”
Submitted By
Nagesha Achari 4AL10ME066
Ganesha Naik 4AL10ME032
Jagadeesha 4AL10ME038
Marutesh Kurubar 4AL10ME061
Under the Guidance of
Mr.Kumarswamy M.C. Mr.Arunkumar D.T.
Asst.Professor Asst. Professor
DEPARTMENT OF MECHANICAL ENGINEERING
ALVA’S INSTITUTE OF ENGINEERING & TECHNOLOGY
MOODBIDRI – 574 225.
2013-2014
3. INTRODUCTION
Preventive and active safety of road vehicles is one of the
top priorities in car design and development nowadays.
Lighting in modern vehicles has been steadily improving in
the last decades.
An aim of development in active safety is to reduce the
reaction time of the driver by improving visibility and thus
achieve a significant increase in road safety and driving
comfort.
The Adaptive Headlight System is the outcome of
engineering efforts in developing the next generation
lighting systems not only for drivers but also for all other
road users.
That means these headlamps focus on the road in varying
manner.
5. OBJECTIVE
• The project work is a solution over the present
mechanism, and includes building and
demonstration of adaptive flexible headlight
system for four wheeler.
7. • The above prototype of flexible headlights
system is successfully done by the
students of Aligarh University
• But the mechanism adapted was the purely
mechanical one
• The project model is made up from
aluminum pipe,gears,wheels,flexible, links
nut and bolts, screws, wheels, studs,etc.
8. IMPORTANT TECHNICAL CONSIDERATIONS
Steering Mechanisms
Rack and Pinion Mechanism Re-circulating Ball Arrangement
Re-circulating Ball Mechanism Power Re-circulating Ball steering
10. VEHICLE HEADLIGHTS AND REFLECTORS
Parabolic Reflector Deep Shallow Reflector
Homifocal Reflector
11. EFFECT OF INTEGRATED HEADLIGHTS
• Best combination of bulb, reflector and the
cover lens can give optimum illumination of
the road.
• That is effective long reaching focus and also
the stray focus.
• But almost any best combination of headlight
components cannot assist the best
comfortable vision for driver in very curvy
roads with smaller turning radius and U turns
18. METHODOLOGY
• When steering wheel rotates, the sensing object fixed to it
rotates in same extent.
• At initial position two sensors IR1 and IR2 are in two ends of
one black region.
• Whenever sensing object rotates to left, the sensor IR1 comes
to white region first ant then the IR2. If sensing object turns to
right in the sense, IR2 comes to white region first than IR1.
• If both sensors faces white region then it sends the electrical
pulses to controller.
• If IR1faces white before IR2 then headlight turns to left and if
IR2 activate first than IR1 then headlight turns to right. It is
achieved by the programming the controller in the same
manner.
21. R= Radius of curvature
O= Instantaneous Point
l= Wheel base
w= Track Width
δi =Inner Wheel angle
δo =Outer Wheel angle
a2= Centre of gravity, distance from rear axle
Known Datas, (considering Maruti 800 model)
l = 2.175m
w = 1.215m
a2 = 1.27m
22. Formulae used:
tanδo = l÷(R1+(w/2))----------(1)
cot δ = (cot δi+cotδo)/2------(2)
R=√(a22 + l2 cot2δ)------------(3)
From equation(1),
For δi=1° (assume)
From the fig,
Tanδi=l/x
Tan1=2.175/x
x=124.605m
27. CONCLUSION
• The Adaptive Headlight System will be an active safety
system.
• Implementation of this system results in good night time
visibility of side of road during turn and there by
comfortable night drive.
• Effective utilisation of the headlights and reduction in
night time road accidents.
• Increases SAFETY for drivers & pedestrians .
28. FUTURE WORK
• Real time calculation of wheel turning in
curvy roads with different vehicle speeds
• Extending the technology to dim dip
variations
• Direct attachment of sensor to wheel to sense
the turning angle of wheels
• Innovative sensing system for accuracy and
continuous turning of headlights .
29. REFERENCES
• Alexander, G. J. and Lunenfeld, H. (1990), Report No. FHWA-
SA-90-017, U.S. Department of Transportation, Federal
Highway Administration, Washington.
• http://www.bmwworld.com/technology/lighting.htm
• Automotive mechanics, william h crouse 10th adition
• U.S. National Highway Traffic Safety Admin. Traffic safety
facts (2000)
• Michigan Univ. Transportation Research Inst. Use of high-beam
headlamps (2006)
30. COST ANALYSIS
Sl. No. particular Cost per
quantity(Rs)
quantity Cost(Rs)
1. Stepper motor 380 2 760
2. IR sensor 215 2 430
3. Bearing 50 2 100
4. Headlight 350 2 700
5. Relay 300 1 300
6. Microcontroller pic 250 1 250
7. Step down
transformer
450 2 900
8. Material cost 1500 -- 1,500
9. Fabrication cost 3000 -- 3,000
total 7,940
