Sencox an Embedded Sensors Based Alcohol Detection and Ignition Lock Systems for Two Wheeler Safety

Alcohol-impaired riding is a major cause of road accidents worldwide, particularly in countries where two-wheelers are the dominant mode of transport. According to the Ministry of Road Transport and Highways (MoRTH) and the World Health Organization (WHO), alcohol consumption contributes to a significant proportion of road accidents every year. Traditional enforcement methods such as breathalyzer tests conducted by traffic police are reactive and cannot continuously monitor riders before ignition. This research proposes SenCox, an embedded alcohol detection and ignition lock system designed for two-wheelers. The system uses three sensors: an enzyme-based ethanol sensor, a breath alcohol sensor, and a hand-touch ethanol detection sensor embedded in the motorcycle handlebar. When alcohol is consumed, ethanol vapors appear in breath and small traces are released through sweat. Approximately 1–2% of ethanol may be released through sweat from the palm of the hand. The system includes a micro‑porous sponge-like material placed inside the handle grip which absorbs ethanol from sweat and transfers the signal to the ethanol sensor. The sensor outputs are sent to a microcontroller which compares the detected alcohol concentration with the legally permissible limit. If the detected value exceeds the legal limit, the controller sends a signal to an ignition relay that disables the motorcycle ignition system. This preventive mechanism aims to reduce drunk driving accidents and improve road safety.