The gas in the car airbag is nitrogen, which will expand in 0.1 seconds. The airbag contains solid sodium azide, which will quickly produce a large amount of nitrogen gas after being hit. The use of airbags can effectively protect the safety of passengers in the car.
The air bag system consists of the following accessories: sensor, gas generator, air bag and microprocessor. The sensor microprocessor can determine the degree of impact of the vehicle, thereby determining whether to open the vehicle air bag. The gas generator inflates the air bag at the moment the air bag is opened.
Airbags are disposable. Once the airbag deploys when external force is applied, it will no longer be used. Simply replacing the airbag will not affect reuse. Along with changes in safety skills, changes to the sensing system and computer controller are also required. Using an airbag in conjunction with a seat belt is the safest way.
The airbag was first proposed by Hetrick in August 1953 and obtained the U.S. patent for "automobile buffer safety device". With the formulation of automobile safety standards in various countries, the installation rate of airbags is getting higher and higher. The airbag installation rate in cars in Europe, the United States, Japan and other countries is close to 100.
The airbag mainly consists of airbag sensors, anti-collision airbags and electronic control devices. The driver's side anti-collision airbag is installed in the steering wheel; the passenger's side anti-collision airbag is usually installed on the dashboard. The airbag sensors are installed on the left, right and middle parts of the cab partition respectively; the middle airbag sensor and airbag system are equipped with electronic control devices. The airbag assembly mainly consists of the airbag, gas generator and igniter. For example, the electronic control device is used to collect and process data, diagnose the reliability of the airbag, ensure that when the preset value is reached, the ignition signal is sent out in time, ignition is scheduled, and the driving gas generator has sufficient driving current.
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