| 摘要 |
PURPOSE: A collision reducing system of a vehicle and a controlling method of the same are provided to reduce the impact of a driver and a vehicle on a vehicle colliding occasion by developing an air bag mounted on the external side of the vehicle. CONSTITUTION: A collision reducing system of a vehicle includes a front sensor, an electronic controlling unit, and an air bag operating part. The front sensor detects the distance and the relative speed of a vehicle with respect to a preceding vehicle. The electronic controlling unit verifies the degree of collision risk on the basis of time-to-collision which is obtained by dividing the distance of the vehicle and the preceding vehicle with the relative speed. A collision warning operation, a vehicle controlling operation, and an air bag developing operation are gradually implemented according to the degree of collision risk. [Reference numerals] (AA) Deceleration of a vehicle; (BB) First warning; (CC) Second warning; (DD,EE) Warning light; (FF, GG) Warning sound; (HH) Vibration; (II) Degree of collision risk; (JJ) Pre-braking control; (KK) Emergency braking control; (LL) Air bag development; (MM) Time; (NN) Automatic Emergency Braking(-0.6g); (OO) Prebraking(-0.3g); (PP) Brake Prefill; (QQ) Driver's Braking
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