When airbags deploy, it indicates a relatively severe collision. However, in reality, airbag deployment does not necessarily mean the car is scrapped. Although airbags are one-time-use safety devices—meaning once they deploy, they are effectively rendered useless and cannot be simply repacked—the car itself may still be repairable. Below is information about airbags: 1. The protective principle of airbags: When a car experiences a certain level of impact force, the airbag system triggers a chemical reaction similar to a small explosive detonation. The airbag, hidden within the vehicle, instantly inflates and deploys, cushioning the occupant's body before it collides with the vehicle's interior. This reduces the impact force on the body, thereby minimizing occupant injury. Although airbags may vary in structure, their working principles are largely the same. 2. While driving, the sensor system continuously sends speed change information to the control unit, which analyzes and evaluates this data. If the measured acceleration, speed change, or other indicators exceed predetermined thresholds (indicating an actual collision), the control unit sends an ignition command to the gas generator or the sensor directly controls the ignition. 3. Upon ignition, an explosive reaction occurs, producing nitrogen gas (N2) or releasing compressed hydrogen from a storage tank to inflate the airbag. When the occupant comes into contact with the airbag, the damping effect of the airbag's exhaust holes absorbs the collision energy, achieving the goal of protecting the occupant.
