Freescale inertial sensors enhance sensitivity of safety-critical automotive airbag systems

Freescale inertial sensors enhance sensitivity of safety-critical automotive airbag systems

Freescale Semiconductor introduces inertial sensors to enhance the performance, sensitivity and reliability of next-generation automotive airbag systems.

HARMEMS technology designed to dampen sensor resonant frequency for more reliable and accurate airbag activation

Freescale’s new medium- and high-acceleration (medium-g and high-g) accelerometers are engineered to detect a crash by measuring the abrupt deceleration of a vehicle and then triggering airbag deployment.

Freescale’s MMA6222EG, MMA6255EG and MMA621010EG inertial sensors are based on next-generation high aspect ratio micro-electromechanical systems (HARMEMS) technology, a proven technology for airbag sensing applications. The accelerometers’ advanced transducer design enhances sensor offset performance and over-damping response, which helps improve system reliability and resistance to high-frequency and high-amplitude parasitic vibrations.

The devices are designed to help distinguish airbag system conditions that might trigger a false deployment, such as a door slam or high vibrations during vehicle assembly.