Airbags System Components

Posted by buyautoparts on July 19th, 2022

An airbags system includes the Control unit, Inflators, and Sensors. Learn more about these three components. The airbag sensor is the heart of the system, and it can also be adapted to fit the needs of different drivers. The MEMS accelerometer is a tiny integrated circuit with micro mechanical elements. It detects changes in capacitance, which in turn sends a signal to fire the airbag.

Adaptive airbag systems

Adaptive airbag systems are a type of advanced vehicle safety technology that tailors the deployment of airbags to the severity of the crash and the size and positioning of occupants. They may use multi-stage airbags that deploy more force based on the severity of the crash and the proximity of the occupants. Other advanced airbag technologies may use occupant sensing devices to regulate the amount of force that is released.

Adaptive airbag systems are controlled by a crash management controller that may determine how strong an impact is and which airbags are needed. The deflagration cord controller can alter the force of airbag deployment based on the size of a vehicle occupant or whether it is in a child safety seat. The deflagration cords can be controlled by an electrical signal to be applied to the airbag module 10.


The sensor for an airbags system reacts to an impact by sending a signal to the airbag control module and seatbelts. But what happens if the sensor malfunctions? This article discusses the two main types of sensors and how they work. Read on to learn more about airbag sensors and how they work. Hopefully, this information will save someone's life. A mass-type airbag sensor measures the amount of impact that the vehicle experiences and sends a signal to the airbag control module.

When the airbag sensor malfunctions, it does not send the necessary data to the SRS module, triggering the airbags. A malfunctioning airbag sensor will result in a warning light on the dashboard, indicating that the airbags are not being activated. If you notice this warning light, make sure to get it fixed as soon as possible. Frontal hit sensors are typically mounted on the bumper or crash bar.


A vehicle's airbags are inflated by the aspirated inflator. The driver airbag's inflator has the capability to inflate 50 liters of air within 30 to 40 milliseconds. A supersonic pulse jet is used to initiate the inflation process. This entrains 3/4 of the air inside the vehicle compartment into the airbag. This results in a significantly reduced time for occupants to receive protection.

The automotive airbag inflator market is relatively consolidated, with several key players controlling more than 60% of the market. Among these, the leading players include Autoliv Inc., Joyson Safety Systems, ZF Friedrichshafen AG, and Toyoda Gosei Co., Ltd. The market for airbag inflators is expected to grow substantially over the next few years, as more cars become available to consumers. In addition, growing middle-class population, increased disposable income, and urbanization are expected to increase demand for these devices.

Control unit

The control unit for airbag system is a component that is integral to the functioning of the system. This unit is used to determine the appropriate deployment and inflate time of airbags based on the conditions in an accident. The airbag control unit is a self-examination device that continuously monitors the condition of the system. It is the core of the airbag system, so it is critical to maintain its proper functioning.

The airbag control unit triggers the deployment of airbags based on the collision severity and acceleration. It uses an in-built safety sensor and an accelerometer to measure acceleration. These sensors are connected to the vehicle's computer. ACUs are equipped with a variety of sensors, including a seatbelt pretensioner and an event data recorder, which record the severity of crashes and trigger airbag deployment.

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Joined: June 21st, 2022
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