Seminar ON Speed Detection Of Moving Vehicle Using

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

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

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

Different Types Of Speed Cameras

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

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

The Doppler Effect

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

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

Working Of Radar

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

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

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

Lidar

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

From Theory To Practice

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

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

Thank you any ?