Airbag device of vehicle and control method thereof

A method of controlling an airbag device of a vehicle, the airbag device including a detection unit configured to detect collision information of the vehicle and seating state information of an occupant, an airbag unit including a plurality of airbag modules respectively installed at a plurality of positions of an interior material formed in an interior space of the vehicle, each of the airbag modules being configured to be inflated from a contracted state as working gas is supplied and to be restored to the contracted state as the working gas is discharged, and a valve unit configured to regulate the working gas supplied to the airbag unit,

• the method comprising:
• acquiring, by a control unit, the collision information and the seating state information detected by the detection unit;
• determining, by the control unit, a hitting position defined as a position of the interior material, at which the occupant is expected to be hit, based on the acquired collision information and seating state information;
• and
• controlling, by the control unit, the valve unit to supply the working gas to a target airbag module installed at the hitting position among the plurality of airbag modules, thereby inflating the target airbag module,
• wherein the valve unit includes a main valve and a plurality of sub-valves respectively provided in flow paths connected from the main valve to the plurality of airbag modules, and
• the main valve is integrated into a valve unit included in an air suspension system applied to the vehicle.