Assistant Professor, Department of Aero Engineering, Nehru Institute of Technology, Coimbatore
Metropolitan cities have the largest population in our country. Many people move out of their native places or villages to cities owing to the numerous benefits that cities can offer. Commutation is one major advantage of urban life. The number of private and public vehicles is increasing year after year to match the transportationneeds of the people. Every vehicle will have emission but the problem occurs when it is beyond the standardized values.This emission from vehicles cannot be completely avoided but, it definitely can be controlled. The semi- conductor sensors at the emission outlets of vehicles detect the level of pollutants and a meter is used to indicate this level. When the pollution/emission level shoots beyond the already set threshold level, there will be a buzz in the vehicle to indicate that the limit has been breached and the vehicle will stop after a certain period of time, a cushion time given for the driver to park his/her vehicle. During this time period, the GPS starts locating the nearest service stations. After the timer runs out, the fuel supply to the engine will be cut-off and the vehicle has to be towed to the mechanic or to the nearest service station. The synchronization and execution of the entire process is monitored and controlled by a micro controller. The system with GPS is also used for the security purpose. The GSM/GPRS modem in this system receives the messages sent by the user and replies for that message such as locations etc. This paper, when augmented as a real time project, will benefit the society and help in reducing the air pollution and the theft of vehicles.