CONTROL METHOD FOR LOCKING DOOR WHEN A CAR ROLLS OVER

摘要

A door locking control method in case of a rollup of a vehicle is overturned is provided to prevent an occupant from being sprung out from the overturned state of the vehicle by calculating the speed through integral calculus of the deceleration and acceleration and releasing the door locked state when the speed is 0. A collision sensor detects a collision state of a vehicle. An ACU(Air Bag Control Unit) judges that an air bag open condition is satisfied from the collision sensor. The vehicle overturned state is sensed by an X axis lateral acceleration sensor, a Y axis accelerometer, and a Z axis accelerometer if the air bag open condition is satisfied. A speed(Vx(T)) is obtained by integrating the deceleration and acceleration of the X axis lateral acceleration sensor and Y and Z axis accelerometers. The side and curtain air bag is opened when the speed exceeds the collision threshold and the information is transmitted to a BCM(Body Control Unit). The door locked state is released when the speed is 0 without transmitting the information to the BCM.