B-Pillar Satellite, Left (SBSL)

B-Pillar Satellite, Left (SBSL)

The SBSL is located in the left B-pillar above the seatbelt inertia reel. The SBSL contains a sensor for transverse acceleration only.

The left B-pillar satellite is responsible for deploying the drivers seatbelt tension limiter.









The SBSL satellite is connected to the SIM via the byteflight. The power supply of the satellite is also from the SIM and it is buffered by the memory backup capacitor.

In sleep mode of the byteflight, the power supply of the SBSL is deactivated by the SIM.




The watchdog function is run via the SIM. The SBSL monitors the ignition stage for the belt tension limiter of the seatbelt on the driver's side.

Sensor

An acceleration sensor for the transversal acceleration is integrated in the SBSL. The sensor provides a variable voltage. This voltage is a measurement of the vehicle's sideways acceleration,

The ignition stages are diagnosed by igniter ICs and ignited by means of ignition capacitors.

The self-diagnosis of the trigger circuits during the pre-drive check and in normal operation is the same for all satellites. (See SASL)