Airbag use and intelligence

Nowadays, it is rumored that China is the world's largest automobile producer with annual output of more than 22 million. Behind the glamorous figures, we are puzzled by “our safety?”. In today's world, one might be tempted to drive and stroll high. As a result, he encountered a “road anger” and went on a flight. Or the result of a good open encounter a sudden rear-end or side-turn of a large truck, and an instant sedan becomes a discus. Of course, there was a tragedy caused by a weak sense of safety. A woman recently took her child in her arms and sat in the co-pilot position. As a result, the child became a “human flesh airbag” in the accident.

Speaking of safety, we are very easy to think of a passive safety protection system on the car - airbags. It is used in conjunction with seat belts to provide effective crash protection for the occupants. When the car collided, the car airbag reduced the head injury rate by 25% and the facial injury rate by about 80%. This can be said to be crucial to protecting our personal safety. Today we talk about the airbags.

Airbag principle

We all know that the airbag will automatically pop up in the event of an accident. What is the principle? When an accident occurs in a car and there is a strong collision, the airbag first receives the impact message and sends the generated reaction action to the electronic controller. After receiving the signal, the electronic controller begins to analyze and process the default signal value. If the airbag is opened, the driving circuit sends the start signal to the gas generator in the airbag module.

When the gas generator receives the signal, it inducts the gas generating agent to generate a large amount of gas. After being filtered and cooled, the gas generator enters the air bag, so that the air bag can be rapidly deployed in a very short time and the air cushion is formed on the front of the driver or the occupant. , And timely leakage, contraction, absorb shock energy, so as to effectively protect the human head and chest, to avoid injury or reduce the degree of harm.

Hyundai Motor has not only added side impact airbags and side air curtains, but also continues to make progress in airbag fabric materials, igniters, and sensor technologies.

Airbag use method

It is worth noting that airbags are not simply popping up when they are not in the car waiting for an accident. Because sometimes it will also fail, one can not open the car accident, the critical moment is equal to the waste; the second is no car accident it opened, scared the driver a big jump. In the course of daily use, we must also pay attention to the maintenance of airbags, but also pay attention to some methods of use.

(1) The airbag must be used with a seat belt. Airbags are passive safety devices that must be used with seat belts. Airbags without seat belts In the event of an accident, the protective effect may not be able to protect the passengers.

(2) Do not place small objects near the airbag. Because when the airbag is opened, these small objects will be thrown out, causing additional damage.

(3) Remove airbag faults in time, otherwise there are two serious consequences. One is that when an accident occurs in a car and an airbag is needed to protect it, it strikes; the other is when the car is running normally, but it opens for no reason, scaring the driver that it is small, but if it causes an accident The accident can't be justified.

(4) Avoid high temperature environment. The components of the airbag device should be properly kept, and do not allow it to be in a high temperature environment above 85°C, so as not to cause the airbag to be opened by mistake.

(5) Avoid accidental bumps and vibrations. The airbag is triggered by the shock or impact. Therefore, in the daily car process, excessive shock or vibration should be avoided to prevent the airbag from opening by mistake.

(6) Do not change the airbag system and its surrounding arrangement without authorization. It is not allowed to change the system's circuit and components and change the structure of the bumper and the front part of the vehicle. No decorations and strips shall be attached to the steering wheel and passenger airbag parts to prevent the airbag from opening.

(7) Dwarf occupants sit in the back row as much as possible, and the airbag mainly protects the head and chest of the human body when it is opened. However, for children and small sized passengers, the airbag may not provide a good protection.

Intelligent airbag

The intelligence of airbags is mainly to add sensors on the basis of common models to detect whether the occupants on the seats are children or adults. What is the height of their seat belts and how high they are? The data is analyzed and processed by computer software to control the inflation of the airbag so that it can perform its best function and avoid unnecessary expansion of the airbag, thereby greatly improving its safety. Smart airbags have two more core components than the common ones, namely sensors and their associated computer software.

Occupant detection system

For airbags failing to provide appropriate protection for different occupants, we can install an occupant detection system on the occupant's seat to detect whether there are people on the seat, the size of the occupants, and the deviation from the middle when seated.

Equivalent to a sensor installed specifically to detect passengers riding information and pass it to the central computer control center. If a collision occurs, the control center makes a comprehensive assessment of the occupant's ride information detected by the occupant detection system while judging the information transmitted from various sensors. In this way, the airbag system can provide appropriate protection for the proper deployment of the airbags by the driver and the occupant.

The ideal airbag can protect the user of the car against various special situations. Airbags should collect and use as much data as possible about the occupant's position information, the type of crash and the speed of crashes, establish a database, identify and judge information about the occupants and cars in the collision, and adjust the parameters of the safety restraint system so that the human body can obtain the most Good protection.

Summary: Airbags are an indispensable protection system for automobiles. Even if the reliability of intelligent airbags is even higher, it is still necessary to pay attention to the habits of daily driving, and timely maintenance of airbags. . This is a barrier to our lives.