Patent ID: 6516278
Filing Date: 2003-02-04
Classification: B60R

Abstract:
A vehicle hood operating system comprising:a velocity sensor for detecting a velocity of a vehicle; an acceleration sensor for detecting acceleration caused by an external force of one of an object to be protected and any other object directed from a front to a back of the vehicle to act upon a bumper; a calculation unit for calculating a speed of bumper deformation by converting said acceleration detected by said acceleration sensor to a speed; an actuator for raising a hood thereby to protect an object from being damaged; and a control unit for controlling said actuator such that said actuator raises said hood when said vehicle velocity detected by said velocity sensor has exceeded a first threshold value, while at the same time, said speed of bumper deformation calculated by said calculation unit has exceeded a second threshold value varying with said vehicle velocity, said second threshold value being set to discriminate the object to be protected from any other object.