BUS SEATBELT REMINDER FOR STUDENTS The seat belt is often referred to as the "life belt, " serving as the most fundamental and critical occupant protection device during car accidents. Statistics show that wearing a seat belt can reduce the mortality rate by 57% in frontal collisions, 44% in side impacts, and 80% in rollover accidents. Many countries have made it mandatory for drivers and passengers to wear seat belts, imposing fines for non-compliance. The purpose of the seat belt detection system is to utilize IoT technology for effective seat belt management, reminding passengers to wear seat belts and reducing secondary injuries caused by accidents. 1. Seat cushion sensor and seat belt socket The seat cushion sensor detects whether someone is sitting in the seat, the seat belt socket detects whether the passenger's seat belt is fastened, and the detection result is output to the detection terminal. 2. Seat belt alarm Seat belt alarm (battery+dual seat) is mainly used for detecting and alerting when a car seat belt is not fastened. When a passenger is detected sitting and not fastened, it will provide voice and visual reminders. One seat belt alarm can manage two seats.