Seat belt reminder system

摘要

A seat belt reminder system (10) includes an occupant sensor (12) to detect an occupant (14) in a seat (18) of a vehicle (20) and a buckle sensor (22) to detect when a seat belt (28) is latched to a seat belt buckle (24). A controller (40) detects whether the seat belt buckle (24) is latched and a wireless transmitter (42) sends the buckle status to a remote receiver (30) in the vehicle (20). The controller (40) and transmitter (42) are powered by a battery (44) that is separate from the vehicle electrical system (32). The controller (40), transmitter (42), and battery (44) may be incorporated into the occupant sensor (12). A separate power supply for the controller (40) and transmitter (42) and a wireless connection to the receiver (30) in the vehicle (20) eliminates the need for a wiring harness from the seat (18) to the vehicle (20). The seat belt reminder system (10) may provide long battery life by connecting the controller (40) and transmitter (42) to the battery (44) only when the seat is occupied.