Seat occupancy determination apparatus

A seat occupancy determination apparatus comprising:

• a seat belt detection portion configured to detect an engagement of a tongue plate with a buckle of a seat belt;
• first and second load sensors arranged at one end of a lower side of a seat in a width direction thereof in a state where the first and second load sensors are positioned away from each other, each of the first and second load sensors detecting a portion of a load applied to the seat;
• a determination portion determining whether an occupancy state of the seat is an occupant seated state in which an occupant is seated on the seat or the occupancy state is a no occupant state in which the occupant is not seated on the seat;
• and
• a negative load determination process portion determining a load decrease caused by a turning of the vehicle to inhibit a determination of the determination portion from being shifted to the no occupant state in a case where a negative load is detected by the first and second load sensors in a state where the seat belt detection portion detects a disengagement state of the seat belt while the occupant seated state is determined by the determination portion.