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DETECTION OF ALCOHOL DURING DRIVING

Galvanic skin response (GSR), also known as electrodermal response (EDR), psychogalvanic reflex (PGR), or skin conductance response (SCR), is a method of measuring the electrical resistance of the skin. There has been a long history of electrodermal activity research, most of it dealing with spontaneous fluctuations.
In our alcohol detection system 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.
The device measures electrical resistance between 2 points, and is essentially a type of ohmmeter. The two paths for current are along the surface of the skin and through the body. Active measuring involves sending a small amount of current through the body.
Due to the response of the skin and muscle tissue to external and internal stimuli, the resistance can vary. When correctly calibrated, the GSR can measure these subtle differences. There is a relationship between sympathetic activity and emotional arousal, although one cannot identify the specific emotion being elicited. The GSR is highly sensitive to emotions in some people. Fear, anger, startle response, orienting response and sexual feelings are all among the emotions which may produce similar GSR responses. These reactions have allowed lie detectors to have some success
At present drunken drivers have increased enormously and so is the deaths due to drunken drivers. The main reason for driving drunk is that the police are not able to check each and every car and even if they catch any one the police can be easily bribed. So there is a need for a effective system to check drunken drivers.In our alcohol detection system 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.Our design also consists of a blood pulse rate sensor which is used to check whether
Introduction:
Though there are laws to punish drunken drivers they cannot be fully utilized as police cannot stand on every road corner to check each and every car driver whether he has drink or not. So there is a necessity to develop a efficient alcohol detector system.This is combined with Skin response meter and accordingly detect.
A transient change in certain electrical properties of the skin, associated with the sweat gland activity and elicited by any stimulus that evokes an arousal or orienting response. Originally termed the psychogalvanic reflex, this phenomenon became known as the galvanic skin response. Electrodermal response (EDR) has replaced galvanic skin response as the collective term.
In our alcohol detection system the ignition circuit is controlled by interfacing a set of sensors, logic circuit and a micro processor. We know that the ignition key of a vehicle has to be turned in two steps, one for switching on the electrical circuit and second step for cranking the engine.



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