Abstract: A vertical alignment method for a radar of a vehicle includes the steps of radiating radio wave to a forward ground by a radar which is installed on the vehicle; receiving reflected wave which is reflected from the ground; and determining whether or not a vertical misalignment of the radar occurs, based on the reflected wave.

Abstract: A vertical alignment method for a radar of a vehicle includes the steps of radiating radio wave to a forward ground by a radar which is installed on the vehicle; receiving reflected wave which is reflected from the ground; and determining whether or not a vertical misalignment of the radar occurs, based on the reflected wave.

Abstract: A passenger detection device of an automobile that can easily detect a passenger's weight is provided. The passenger detection device of an automobile includes: a weight sensor module for detecting a first voltage difference value and a first temperature at a first point of a seat; and a smart sensor module for detecting a second voltage difference value and a second temperature at a second point of the seat, calculating a final weight of the first and second voltage difference values using the first and second temperatures, and detecting a passenger by comparing the final weight and a setting reference.

Abstract: An occupant classifying system and method includes a weight sensing unit provided in a seat, a central processing unit classifying the occupant into any one of various classes pre-set using the information acquired by the weight sensing unit, and regulators applying power to the weight sensing unit and central processing unit and initializing the central processing unit whenever the central processing unit is applied with power. The occupant classifying system and method provides a high accuracy and reliability, since the system and method are initialized when the vehicle's ignition is started and classify the occupant by information acquired through the weight sensing unit.