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

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Seminar ON

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#### Presentation Transcript

Speed Detection Of Moving Vehicle Using Speed Camera

Presented by

SHEEJA.C.K

## Seminar ON

### 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.

### DIFFERENT NAMES OF SPEED CAMERAS

• Traffic enforcement camera

• Photo enforcement

• Red light camera

### 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

### 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

### The Doppler Effect

• 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

### 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

### 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

### 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

### LIDAR

• Light detection and ranging

• It does not use DOPPLER EFFECT to detect the speed

• Frequency used by radar is higher

### 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

### PROBLEM FROM TECHNICAL VIEW POINT

• Operating during rain or mist

• Measurement range

• Reaction time

• Continuous transmission

• Discrimination

### CONCLUSION

• Speed camera make our road safer

• The protect innocent road users

• This camera reduces accidents

Thank you

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