SPEED CAMERA
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
seminar surveyer
Active In SP
**

Posts: 3,541
Joined: Sep 2010
#1
31-12-2010, 03:13 PM


PRESENTED B Y
ROHIT KUMAR
EC E 4th YEAR



.ppt   speed cameras.ppt (Size: 2.65 MB / Downloads: 120)

INTRODUCTION
Speed cameras were introduced in west London in 1992 and following their success in reducing speed related crashes and injuries their use expanded to many other areas of Great Britain. The equipment is expensive to buy, operate and maintain and their support in prosecution procedures also much substantial administration costs. However and the cost are small compared to the benefits of society and the economy.

NEED OF SPEED CAMERA
 
Although there is good road safety performance, the number of people killed and injured on our roads. So the roads safety strategy was published or introduced to support the new casualty reduction targets. The road safety strategy includes all forms of invention based on the engineering and education and enforcement and recognizes that there are many different factors that lead to traffic collisions and casualties. The main reason is speed of vehicle. We use traffic lights and other traffic manager to reduce the speed. One among them is speed cameras.  
Speed cameras are recommended under use to reduce road casualties. Since these cameras save lives of road users the speed camera is also known as" safety cameras".

BASIC PRINCIPLE
Speed camera uses the basic principle of Doppler Effect and RADAR technologies.
 

RADAR PRINCIPLE
A radar uses electromagnetic waves to detect objets and provide informations about them (distance, speed).
The radar sends radio waves (electromagnetic waves) at a given frequency and listens for their return (echo). If an object is in the beam, some waves will bounce off it and return to the radar. By dividing the time it took for the waves to travel back and forth by the speed of the waves (the speed of light) it is then easy to determine the distance.

DOPPLER EFFECT
To determine speed, radars use the doppler effect. They measure and scale the frequency variation between the radio wave sent and the radio wave received (echo). If the object is moving away, the frequency will be lower, if it is getting closer, the frequency will be higher. Depending on how much lower or higher the echo frequency is, it is possible to know at what speed the object is moving from the radar position.

The principle of this effect is well known in the study of sound.If the source of sound, emitting a note of frequency ‘f’ is move with a constant velocity 'V' relative to an observers, it is found that the observers p Perceives a sound having the frequency f' which differs from ‘f', being greater or smaller according to the source is move towards or away from observers. This phenomenon in sound was first explained by Doppler and hence the name Doppler effect.
 







Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  high speed electronics devices ppt jaseelati 0 292 23-01-2015, 02:18 PM
Last Post: jaseelati
  intelligent wireless video camera wikipedia jaseelati 0 416 07-01-2015, 04:48 PM
Last Post: jaseelati
  high speed electronics devices ppt jaseelati 0 274 07-01-2015, 02:31 PM
Last Post: jaseelati
  accident alert in modern traffic system with camera jaseelati 0 244 01-01-2015, 02:06 PM
Last Post: jaseelati
  speed checker for highways project ppt jaseelati 0 208 30-12-2014, 03:07 PM
Last Post: jaseelati
  digital vehicle speedometer with password enabled speed limit setting jaseelati 0 295 23-12-2014, 02:21 PM
Last Post: jaseelati
  digital vehicle speedometer with password enabled speed limit setting jaseelati 0 298 20-12-2014, 01:55 PM
Last Post: jaseelati
Thumbs Up intelligent wireless video camera using computer ppt devendrareeta 1 581 07-03-2014, 04:03 PM
Last Post: seminar project topic
  DESIGN AND DEVELOPMENT OF OVER SPEED AND DRUNKEN DRIVE INDICATOR seminar class 3 2,936 04-09-2013, 01:35 PM
Last Post: Guest
  The Effectiveness of Speed Cameras pdf study tips 0 278 25-06-2013, 12:00 PM
Last Post: study tips