1.27 Automotive airbags
Car airbags
1、 Overview of the plan:
Car safety airbags (SRS) refer to devices that inflate and protect passengers in a collision before a second collision occurs. The airbag system, as an auxiliary device for the passenger restraint system of the seat belt, has become an essential safety device in today's automobiles. Qualified automotive airbag systems should comply with the national standard GB/T19949.
The collision sensors used in SRS are generally divided into front sensors, central sensors, and safety sensors based on the different tasks they undertake. The front sensor is used to detect the impact signal received by the front of the car at low speed; The central sensor is used to detect information about high-speed collisions in cars; Safety sensors are used to prevent the system from causing airbag malfunction in non collision situations.
The sensor senses the intensity of the car collision and transmits the sensed signal to the controller. The controller receives the signal from the sensor and processes it. When it determines that it is necessary to turn on the airbag, it immediately sends an ignition signal to trigger the gas generator. After receiving the ignition signal, the gas generator quickly ignites the well and generates a large amount of gas to inflate the airbag.
2. Recommended products for airbags:
|
Category |
Brand |
Product and product overview |
|
TVS Diode |
Leiditech |
Vehicle power supply：SMBJ24CA package SMB,24V VRWM,15.4A IPP； SM8S36CA package DO-218AB,36V VRMW,114A IPP |
|
ESD Diode |
Leiditech |
Sensor：LC24CI package SOD-323 IEC 61000-4-2 (ESD) ±30kV; 24V VRWM;3A IPP |
|
ESD Diode |
Leiditech |
For CAN chip：SMC24 package SOT-23 IEC 61000-4-2 (ESD) ±30kV,24V VRWM，9A IPP |
|
ESD Diode |
Leiditech |
LIN receiver：SD12C package SOD-323,IEC 61000-4-2 (ESD) ±30kV,12V VRWM，15A IPP |
