Design of high sensitive alcohol sensor with vehicle ignition disabling system.

Driving while either intoxicated or drunk is dangerous and drivers with high blood alcohol content or concentration (BAC) are at greatly increased risk of car accidents, highway injuries and vehicular deaths. Although the proportion of crashes that are alcohol-related has dropped dramatically in recent decades, there are still far too many such preventable accidents. Unfortunately, despite great progress, alcohol-impaired driving remains a serious national problem that tragically affects many victims annually. At present drunken drivers have increased enormously and so is the deaths due to drunken drivers. In this paper an alcohol detection system is designed and implemented. Apart from sensing the alcohol, the ignition of the fuel is regulated by a sensor circuit. The sensor circuit is used to detect whether alcohol was consumed by the driver recently. This design also consists of sensor which is used to check whether alcohol is consumed while driving. A prototype is also designed which detects the amount of alcohol taken by the person. When the amount of the alcohol is reached to a threshold limit (Dangerous/maximum) it automatically turns off the combustion engine of the vehicle with buzzer indication and simultaneously with a LED indication. [ABSTRACT FROM AUTHOR]