1. Speed Detection Of Moving Vehicle Using Speed Camera
Seminar ON
Speed Detection Of Moving Vehicle Using Speed Camera
Presented by
SHEEJA.C.K

2. INTRODUCTION Speed cameras were introduced in west London in 1992
Following their success in reducing speed related accidents
Speed camera also known as safety camera
The basic principle behind speed camera is DOPPLER EFFECT and RADAR TECHNOLOGIES.

3. DIFFERENT NAMES OF SPEED CAMERAS
Traffic enforcement camera
Road safety camera
Road rule camera
Photo radar
Photo enforcement
Red light camera

4. Different Types Of Speed Cameras

5. INTRODUCING THE DOPPLER EFFECT
The principle of DOPPLER effect is well known in the study of sound
Doppler is the introducer of DOPPLER effect and hence the name
The principle of speed camera is the DOPPLER effect and radar technologies

6. FORMULA FOR DOPPLER EFFECT
The principle of speed camera is the DOPPLER effect that can be described by the formula
Fm=2vfecos( /c )
Fm=frequency of the received signal
V=speed of vehicles
Fe=frequency of transmitted signal
=angle between the transmitted signal and path along which the vehicle travels
C=propagation speed of the signal in the air α α

7. The Doppler Effect

8. WHAT IS RADAR? Radio detection and ranging
It is an object detection system, which uses the radio waves to determine the range, altitude, direction and speed of objects
It is the major part of speed camera
Aerials of radar is placed parallel to the road not across them

9. WHY ARE SPEED CAMERAS WHERE THEY ARE?
Areas where accidents frequently occur
Areas where speeding is one of the main cause for accidents
Areas where human police control is difficult

10. Working Of Radar

11. WORKING
Vehicle is in speeding ,as it passes by a automatic radar speeding is detected, digital picture of the vehicle is taken
Picture is sent to national treatment center
Registration of the car is compared to, databases of stolen and rented vehicles
Fine is mailed

12. HOW DOES RADAR DETECT SPEED OF VEHICLES?
It uses electromagnetic or radio waves to detect speed
It sends radio wave and listen for their return
Dividing the time took the waves to return and forth by the distance is calculated
Using DOPPLER principle speed is calculated

13. LIDAR Light detection and ranging
It does not use DOPPLER EFFECT to detect the speed
Frequency used by radar is higher

14. Lidar

15. FROM THEORY TO PRACTICE
Basic of every speed camera is SHF generator
Uses frequency between 2ghz to 10ghz
Speed camera consist of Analyser, Amplifier, Processor, Receiver, Oscillator, Display

16. From Theory To Practice

17. PROBLEM FROM TECHNICAL VIEW POINT
Operating during rain or mist
Measurement range
Reaction time
Continuous transmission
Discrimination

18. CONCLUSION Speed camera make our road safer
The protect innocent road users
This camera reduces accidents

19. Thank you
any ?