Dual factor seat belt monitoring system

Wearing a seat belt is the most effective way to prevent injury or death in crashes for both adults and children which also plays a major role in saving lives. Now a days, most of the passengers are using dummy seat belt buckle in place of the actual safety belt or just locking seat belts on their back side which leads to failure of vehicle’s seat belt alarm. To avoid this improper seat belt wearing, this paper proposes the Dual factor seatbelt monitoring system. Current mechanism uses dual resistance switch for buckle confirmation and occupant monitoring apparatus system based on passenger. In this system, a two rotary hall effect sensor is mounted near the retractor. Seat belt webbing is connected to a Retractor which will rotate in counterclockwise direction whenever the passenger pulls the webbing out to wear seat belt. Hall effect senor uses a rotating magnet as the measurement source. While using seat belt, retractor will rotate, and the webbing will expand. Hall effect sensor will calculate the number of rotations of the retractor. Sometimes passengers would just lock their seat belts without wearing them. In such cases, this system will find that passengers are using seat belt or not, even though the seat belts are locked. If there is a minimum rotation or else there is no rotation, we can identify that passengers are not using seat belts. Based on the rotation of the retractor, we can identify whether the passenger is genuinely wearing seat belt or not. The advantage of this system over existing system is to avoid air bag deployment when seat belt is not actually fastened, reduce injury to passengers and to avoid improper seat belt wearing without impacting current seat belt system