Peripheral-sensor accelerometers

  • 21-Dec-2010 08:44 EST


STMicroelectronics’ family of high-g acceleration sensors for advanced airbag systems are micro-machined devices that detect the rapid deceleration of the vehicle during a crash and send instant information to the airbag control unit. The AIS1xxxDS peripheral-sensor accelerometers provide single-axis in-plane motion sensing across five full-scale ranges from ±20 g up to ±400 g. An on-chip integrated circuit interface converts the deceleration data into a high-resolution digital bit stream that is transmitted with high reliability to a dedicated microcontroller chip through a standard distributed system interface protocol. Sophisticated algorithms evaluate the situation and decide whether or not to deploy the airbag within a few milliseconds. The sensing part of the airbag accelerometer is fabricated on ST’s 8-in (203-mm) MEMS (microelectromechanical systems) line. The electrical part benefits from the high level of integration and specific control of parasitic currents made possible by the Silicon-On-Insulator technology in ST’s Bipolar-CMOS-DMOS manufacturing process.

HTML for Linking to Page
Page URL
Rate It
4.00 Avg. Rating

Read More Articles On

In the ongoing design and engineering crusade that is vehicle lightweighting, grams count. In some cases, tenths of a gram count. Regardless of how fuel price has moderated in the U.S. in recent years, the importance of global platforms and global markets means the drive to create more mass-efficient vehicle structures, subassemblies and components continues unabated.
Cab doors that open 180° thanks to a new hinge design are one innovative feature on the recently unveiled 2017 Titan King Cab model.
Still riding on a separate hydroformed-steel ladder frame (itself redesigned and CAE-optimized for greater strength and lower mass), the new eight-passenger SUV sheds up to 300 lb (136 kg) compared with the incumbent model. The mass reduction enabled Ford engineers to move to a powertrain format using only the 3.5-L turbocharged V6 with auto stop-start and 10R80 10-speed automatic.
Audi reveals details of the structural technology of its upcoming A8 as Audi and Porsche Chairmen pledge closer co-operation.

Related Items

Training / Education
Training / Education
Training / Education
Training / Education