Where and what is the function of automotive airbag sensors?

Airbag sensors are also known as crash sensors, and according to different uses, collision sensors are divided into trigger collision sensors and protective collision sensors. The trigger collision sensor, also known as the collision intensity sensor, is used to detect the acceleration change during the collision and transmit the collision signal to the airbag computer as the trigger signal of the airbag computer; The protective crash sensor, also known as the safety crash sensor, is connected in series with the trigger collision sensor to prevent the airbag from detonation. When a collision occurs, the airbag sensor receives the impact signal, reaches the specified intensity, and the sensor sends a signal, if the airbag condition is reached, the starting signal is sent to the inflator in the airbag assembly by the driving circuit to produce gas, so that the airbag breaks through the liner quickly in a very short time, forms an elastic air cushion in the front of the driver or occupant, and leaks and contracts in time to absorb the impact energy, so as to effectively protect the human head and chest.

Sensor position of the airbag.

It is generally equipped with multiple trigger collision sensors, and the installation location is generally in the front and middle of the body, such as the inside of the fenders on both sides of the body, under the headlamp brackets, and on both sides of the engine radiator bracket. With the development of collision sensor manufacturing technology, some cars will install the trigger collision sensor in the ECU of the airbag system.

Airbag. The sensor is generally installed in the front of the car (front and passenger seats), the side (front and rear seats in the car) and the roof of the car. Generally, when the sensor fails, the relevant fault lights will be lit up, find the cause, and when the sensor fails, we must pay attention to it, which is closely related to driving safety, after all, safety first.

I drive in the middle of the steering wheel, and the co-pilot is in the workbench. The side airbags are in the backrest of the front and passenger seats.

Airbags are generally located in front of the car, that is, in the front and passenger seats, on the side, that is, in the front and rear seats of the car, and on the roof. Generally speaking, car airbags are located on the body of the airbag marking, usually just below or next to the marking.

1. Front airbag.

The airbag in front of the driver is mounted on the steering wheel**, so in order to avoid unnecessary detonation of the airbag, so do not hit the position of the steering wheel**.

2. Passenger airbags.

Passenger airbags are located in the passenger and rear seats.

3. Side airbags.

The side airbags are usually on the outside of the seat, or they are mounted on the upper frame of the side door, and some models are mounted on the A-pillar.

4. Knee airbag.

Knee airbags are installed underneath the dashboard to cushion injuries to the legs in the event of a heavy blow.

The number of airbags standard in the low-end cars produced in China is 1 to 2, which are generally located in the driving and co-pilot positions of the vehicle, which are used to protect the front members in the event of a violent impact of the vehicle, cushion the damage caused by the impact to the chest and brain, so as to protect the chest and brain.

In some mid-range B-segment cars, there are four airbags, two for the main and two for the co-pilot, and two for the side doors, which can effectively cushion the strong impact from the front and side.

Some high-end models, the whole car is equipped with 6 airbags and 18 air curtains, which are located in the front and co-pilot positions in the car, two on each side of the front and rear doors, and 18 air curtains are distributed in the front and rear windshields, and the position of the side windows.

Vehicle airbags.

Sensors are generally installed under the vehicle's headlight bracket, on both sides of the vehicle's engine cooling bracket, and on the vehicle's fenders.

The inside, as well as the main and passenger door panels of the vehicle.

The vehicle airbag sensor can send a signal to the reasonable airbag when the vehicle encounters a strong collision, and when it reaches a certain strength, the airbag will automatically pop open to protect the important parts of the owner. The safety period of the vehicle.

It is divided into the main pilot airbag, the passenger airbag, the knee airbag, the side airbag, and the head airbag.

The airbags equipped with the vehicle belong to a passive safety protection system that can be used with the vehicle's seat belt.

When used together, it can effectively provide anti-collision protection for car owners. If the vehicle collides with other vehicles while driving, the airbag equipped with the vehicle can reduce the head injury rate of the driver by about 25% and the facial injury rate by 80%, which greatly reduces the personal safety of the driver and other members of the vehicle after the vehicle is involved in a traffic accident.

The function of the front airbag sensor is mainly used to detect a slight collision, like this sensor is generally installed on both sides of the front bar foam, and then a hose is connected in the middle, when the vehicle has a slight collision, the front bar foam or royal will be squeezed, and the hose embedded in it will also be squeezed, at this time the force of the squeezing shirt Chunyan pressure collision sensor, at this time your Senga front cover pop-up device will work to pop up the cover, this is a pedestrian protection function sensor, If it is damaged, this function will be disabled.

Car airbags are mounted on the steering wheel** to protect the driver, passenger airbags are installed inside the storage compartment, side airbags are mounted on the outside of the seats or side doors and on the A-pillar upper frame, and knee airbags are installed under the dashboard.

1.Front airbags: The driver's front airbags are mounted on the steering wheel**. To avoid unnecessary detonation of the airbag, do not slam the steering wheel**.

2.Passenger airbags: The front airbags for the front passengers are mounted inside a square instrument cluster. Do not put anything in this position to avoid danger.

3.Side airbags: The side airbags of the first jujube limb are installed on the outside of the seat, or will be installed on the upper frame of the side door, and some models will be installed on the A-pillar.

4.Knee Airbags: Knee airbags will be installed under the gauge orange panel.

Airbag logo.

The exterior of the container with an airbag system is printed with the word SRS, which translates to "auxiliary inflatable restraint system" in Chinese. At present, the number of low-end cars produced in China and the number of airbag stools in the world are one or two as standard. In some mid-range B-segment cars, there are generally four airbags, in addition to the two for the first and second drivers, there are also two airbags in the side doors.

In some high-end cars, there are 6 airbags and 18 air curtains. It is important to note that not all models have airbags in these locations, which will depend on the height configuration of the car.

The role of airbags.

An airbag system is a passive safety protection system (see Automotive Safety Performance). When used with seat belts, it can provide effective anti-collision protection for passengers. In the event of a car collision, car airbags can reduce the rate of head injuries by 25% and the rate of facial injuries by about 8 0%.