How do Airbag Sensors Work?


There are several different type of airbag sensors. The most common sensor is the electromechanical. This is a gas dampened ball and tube design. When the sensor receives a jolt that knocks the ball loose from the magnet, the ball will run down the tube and hit the switch and close the circuit. You can find more information here:
1 Additional Answer
There are plenty of crash sensors exists. The most common sensor in the modern cars are the micro machined accelerometer chips , which detects the sudden jolt and produces electronic signal.
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