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Airbags are mainly used to prevent injuries caused by collisions between occupants and interior parts in a car collision. It is usually used as an auxiliary safety device for seat belts, and the two work together. The protection principle of the airbag is: when the car is subjected to a certain collision force, the airbag system will trigger a chemical reaction similar to the explosion of a trace explosive. The airbag hidden in the car is instantly inflated and popped up, in the body of the occupant and the car. The parts can be in place in time before the collision. When the human body touches the airbag, the airbag starts to vent through the air holes on the surface of the airbag, which acts as a cushion, reduces the impact force on the body, and finally achieves the effect of reducing occupant injury.
"Schematic diagram of the airbag system structure of a normal car model"
Commonly used automobile airbag systems are composed of collision sensors, control modules (ECU), gas generators, and airbags. The main components are introduced one by one below.
