Anti-Theft Security For Car Audios
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
rishabh.dubey89
Active In SP
**

Posts: 1
Joined: Oct 2010
#1
15-10-2010, 01:34 AM


i want abstract for the above mentioned
Reply
seminar surveyer
Active In SP
**

Posts: 3,541
Joined: Sep 2010
#2
23-10-2010, 11:08 AM


Prepared by:
T.K. HAREENDRAN


Abstract
This small circuit, based on popular CMOS NAND chip CD4093, can be effectively used for protecting your expensive car audio system against theft.
When 12V DC from the car battery is applied to the gadget (as indicated by LED1) through switch S1, the circuit goes into standby mode. LED inside optocoupler IC1 is lit as its cathode terminal is grounded via the car audio (amplifier) body. As a result, the output at pin 3 of gate N1 goes low and disables the rest of the circuit.
Whenever an attempt is made to remove the car audio from its mounting by cutting its connecting wires, the optocoupler immediately turns off, as its LED cathode terminal is hanging. As a result, the oscillator circuit built around gates N2 and N3 is enabled and it controls the ‘on’/‘off’ timings of the relay via transistor T2. (Relay contacts can be used to energise an emergency beeper, indicator, car horns, etc, as desired.)
Different values of capacitor C2 give different ‘on’/‘off’ timings for relay RL1 to be ‘on’/‘off’. With 100μF we get approximately 5 seconds as ‘on’ and 5 seconds as ‘off’ time.
Gate N4, with its associated components, forms a self-testing circuit. Normally, both of its inputs are in ‘high’ state. However, when one switches off the ignition key, the supply to the car audio is also disconnected. Thus the output of gate N4 jumps to a ‘high’ state and it provides a differentiated short pulse to forward bias transistor T1 for a short duration. (The combination of capacitor C1 and resistor R5 acts as the differentiating circuit.) As a result, buzzer in the collector terminal of T1 beeps for a short duration to announce that the security circuit is intact. This ‘on’ period of buzzer can be varied by changing the values of capacitor C1 and/or resistor R5.
After construction, fix the LED and buzzer in dashboard as per your requirement and hide switch S1 in a suitable location. Then connect lead A to the body of car stereo (not to the body of vehicle) and lead B to its positive lead terminal. Take power supply for the circuit from the car battery directly.


for more details, please visit
electronicsforuefylinux/circuit/feb2003/Anti-Theft%20Security%20For%20Car%20Audios.pdf

Reply
seminar addict
Super Moderator
******

Posts: 6,592
Joined: Jul 2011
#3
02-02-2012, 11:05 AM


to get information about the topic anti theft alarm for bikes full report ,ppt and related topic refer the link bellow
topicideashow-to-anti-theft-alarm-for-bikes

topicideashow-to-anti-theft-alerting-system-for-vehicles-two-wheeler

topicideashow-to-anti-theft-security-for-car-audios
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
  anti sleep alarm for students Guest 2 958 27-09-2013, 09:38 AM
Last Post: seminar projects maker
  power theft detection Guest 1 491 09-09-2013, 09:43 AM
Last Post: study tips
  wireless power theft monitering using microconrolar Guest 1 621 08-07-2013, 10:10 AM
Last Post: study tips
  wireless power theft monitoring system Guest 2 1,009 21-05-2013, 12:35 PM
Last Post: study tips
  CAR CRASH ANALYSIS usypi 4 2,461 06-05-2013, 09:19 AM
Last Post: study tips
  multiuser security for multi host comunication Guest 1 544 12-03-2013, 10:20 AM
Last Post: study tips
  cloud computing security:from single to multi-clouds Guest 1 690 07-03-2013, 09:31 AM
Last Post: study tips
  reuse of old model ambassitor car suspension Guest 0 347 26-02-2013, 06:59 AM
Last Post: Guest
  embedded system security Riya renu 0 336 30-01-2013, 03:05 PM
Last Post: Riya renu
  border security using wireless integrated network sensors Guest 2 802 25-01-2013, 09:46 AM
Last Post: seminar tips