16-04-2012, 01:20 PM
EMBEDED SYSTEM FOR TERRORISM PREVENTION
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ABSTRACT:
What is the major weapon of terrosists?.It is explosives. An explosive can be taken even in a small bottle and can be effectively used for killing thousands within few seconds. The terrorist mostly used liquid explosive like GTN. To identify these liquid explosive we have a special format. Thus we have a UV spectrometer that tests the component and gives its absorption spectra. The output is fed to a Band Pass Filter. A band pass filter filters the required frequency range and rejects others and sends it to a frequency to analog converter, which coverts the frequency signal to voltage or current signal and sends to A/D converter, which converts analog to digital signals. Finally, this system is installed in railway stations, airports, high security zones etc.
INTRODUCTION:
Explosives are of two kinds namely
Metal explosives: detected by metal detectors
Liquid explosives: no efficient detecting system
So we developed a strategy that would not only detect liquid explosives but also for catching the terrorist red handedly. By our wide research over the web we found out that the 99% OF TERRORISTS used very few amounts of highly destructive liquid explosives like glyceryl trinitrate,ammonium nitrate etc.Nitroglycerin (glyceryl trinitrate famously known as GTN)is the most convenient and the frequently used liquid explosive. This basically has a –NO2 bond,-CH bond and –CO bond that are supposed to give characteristic spectra when subjected to UV spectrometer. The output is fed to a Band Pass Filter. A band pass filter filters the required frequency range and rejects others and sends it to a frequency to analog and it sends to analog to digital converter. Even after identifying the existence of explosives terrorists escape through the help of inefficient communication network systems (with special reference to LONDON HEATHROW AIRPORT, with highest
UV Spectrometer
A UV spectrometer does the job of obtaining the UV absorption spectra of the substance under investigation .A Red Tide USB650 is the one in which we can extract the maximum benefits for our system simply because its one of the most inexpensive spectrometers present.
DIGITAL SPECTRUM ANALYZER:
The output of the A/D converter can also be given to software called zelscope, which is digital spectrum analyzer. A spectrum analyzer is a device used to examine the spectral composition of the uv absorption spectrum of various components.
CONCLUSION:
• Till now no bomb detecting software has ever adopted “python as its source code.” But we preferred python confidently because, Python is designed around a philosophy which emphasizes the importance of programmer effort over computer effort so that sixth sense has always got the scope to make amends in the lapses of the computer.
• Use of data acquisition system enables us to reduce the response time to a great extent.
• This system can be installed in railway stations,airports,high security zones etc.
• Incidents like HEATHROW AIRPORT can be avoided