Seat belt controlling system and method of controlling seat belt

A method of controlling a seat belt, comprising:

• 1) outputting a signal showing a rotary state of each of wheels of a vehicle;
• 2) determining whether or not a restraining of a seat occupant of the vehicle is necessary, based on the signals which are outputted by the outputting operation and correspond to the respective wheels;
• and
• 3) implementing the following windings of a seat belt:
• a) a first winding implemented when the determining operation determines that two or more of the wheels are in a state necessary for the restraining of the seat occupant, and
• b) a second winding implemented when the determining operation determines that one of the wheels is in a state necessary for the restraining of the seat occupant, the second winding being weaker than the first winding in winding force, the first winding being implemented after a continuation of a certain time of the second winding.

A seat belt controlling system, comprising:

• 1) means for outputting a signal showing a rotary state of each of wheels of a vehicle;
• 2) means for determining whether or not a restraining of a seat occupant of the vehicle is necessary, based on the signals which are outputted from the outputting means and correspond to the respective wheels;
• and
• 3) means for implementing the following windings of a seat belt:
• a) a first winding implemented when the determining means determines that two or more of the wheels are in a state necessary for the restraining of the seat occupant, and
• b) a second winding implemented when the determining means determines that one of the wheels is in a state necessary for the restraining of the seat occupant, the second winding being weaker than the first winding in winding force, the first winding being implemented after a continuation of a certain time of the second winding.