There is a configuration in the car that is disposable and will be scrapped once. And it's one we don't want to start. It's an airbag. It is because most of the time will not use it, so the owners of the airbags awareness is not much. In particular, when the Takata airbags were exposed to safety hazards not long ago, we learned that the original airbags were not "safe."

Event Playback: Airbags Can Be Deadly?

The "safe" airbag produced by Japan's Takada Group, the world's second-largest airbag supplier, has become a "killer" airbag. As early as 2000, Takata defective airbags were exposed in North America due to complaints from owners. Since then, Takada airbags have been out of control, and constantly “grab the lead” in the recall list. Today, Takada's “airbag door” is still undergoing continuous fermentation, and there is no sign of stopping. The brand's airbags will burst metal fragments when they pop up, which has now resulted in 16 deaths. As of now, Takada airbags have caused more than 50 million vehicles to be recalled globally because of “unsafe” airbags. Recently, Japan’s Toyota Motor announced that it will recall a total of approximately 5.8 million vehicles globally, involving 820,000 vehicles in the Chinese market. Takada Airbags has triggered the largest recall in the history of the automotive industry!

Recently, the information released by the AQSIQ showed that the number of recalls caused by airbags in October 2016 increased significantly, accounting for 80% of the total recalled cars in the month.

Why is the air bag unsafe?

One of the reasons for the explosion of Takada airbags was the use of a chemical propellant (ammonium nitrate), which caused the airbag to open too hard, causing splattering of metal fragments into the car. Takata has long been aware of the "dangerous, unstable" nature of ammonium nitrate gas, but continues to use it because of its low cost.

Honda Motor Co., Ltd. said that it had consulted the internal documents of Gaotian and found that Gaotian airbags had been falsified on specific airbag gas generators. There was also evidence that Takata Group engineers knew that their parts had malfunctioned as early as in 2000, but concealed and destroyed them. The test results.

What is the development trend of airbags?

In the new normal state of many active electronic safety deployments, car airbags still have a lot of room for development as the last line of defense for occupants.

One, intelligent. Sensors let airbags know the occupant characteristics.

Smart airbags will use a variety of sensors to fully sense the occupant on the seat. Wherein, the weight sensor senses whether there is a person according to the weight on the seat, whether it is an adult or a child; the electronic area sensor can generate a low-energy electronic area in the cab, measure the current passing through the area and measure the presence and position of the occupant; infrared sensor According to the heat to detect people's existence, to distinguish it from inanimate things. In this way, the pop-up of the airbag can be appropriately sized according to the occupant's condition.

Rapid deflation balloon technology to reduce airbag hazards.

When the occupant presses the airbag due to inertia, the traditional airbag deflation system begins to work, and the internal restraint system is squeezed, the soft rope is relaxed, the flexible vent cover is finally released, and the airbag rapidly deflates, reducing the occupants' safety. Inflated airbag damage. This technology is smaller, simpler, and cheaper than today's two-stage airbags.

II: Diversification of airbags.

Rear seat airbag

At present, there are only two airbags for the front airbag and the co-pilot. The rear passengers only have side curtains to protect them. Frontal airbags designed for rear passengers protect the front passengers from the rear. This airbag is placed on the back of the front seat. When a frontal collision occurs, the pop-up of the airbag can better protect the rear passengers.

Seat belts

When the airbag seat belt detects the collision with the preset crash strength, the built-in airbag of the seatbelt will pop up, increase the contact area between the seatbelt and the occupant, reduce the impact force, and assist the safety of the occupant by assisting the seatbelt. However, some people think that airbag seat belts increase the thickness of seat belts and affect comfort when driving.

Hip airbag

The hip airbags are designed and developed based on the improvements in the conventional airbags. When it is unfolded, it is also exhibited from the seat cushion. The protection effect is not affected by the external factors of the driver and passenger. It is an L-shaped design and has a larger volume than the side airbag. When deployed, it can cover the entire hip and torso portion of the person.

External airbag

The previous car airbags were in the car. Now some car safety technology companies are developing an external airbag that is mounted on the side of the car. The camera and the radar structure are used to detect when a collision has occurred. At the same time, signals are sent to the airbag. The airbag will be at 30. Inflate within milliseconds.

Pedestrian protection airbag

Pedestrian safety airbags will pop up to cover the lower part of the windshield and A-pillar. One-third of the windshield will be covered, which can effectively protect pedestrians' head safety. The timing of the pedestrian safety airbag pop-up is set in advance. Only when the vehicle's speed is between 20 km and 50 km, and the front sensor detects that there are about 100 meters ahead, there will be people working.

Summary: Airbags are an essential protection system for cars. This is the last barrier to protect our lives. The development trend of airbags in the future is more intelligent and more diversified. Ultimately, however, airbags are ultimately "people-oriented" because it is the airbag's existence that ensures passenger safety.



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