With AB12, Bosch offers airbag control units that are scalable for all markets, vehicle segments and platforms. These occupant protection electronic modules can be adapted for varying customer hardware and functionality requirements.
The airbag control unit AB12 plus is flexible and scalable with respect to the number of firing loops and sensor interfaces for peripheral crash sensors. The airbag control unit can trigger up to 32 firing loops and control 12 PSI5 sensor interfaces. There is also the option to expand the control units to trigger up to 48 firing loops and control up to 18 sensor interfaces.
With the AB12 plus variant Bosch has developed a concept which integrates the airbag control and the ESP® inertial sensors into one compact airbag control unit, saving both space and cost. There is also the option of extending the AB12 plus variant with a complete set of angular rate and acceleration sensors for all three dimensions (6D), meaning that chassis systems are also supported in addition to the ESP® and rollover-protection features.
The accuracy of the algorithms used to detect front, rear-end and side crashes as well as rollovers has been further improved in comparison with the previous version, partly as a result of the addition of a new algorithm based on the parameters of the kinetic energy absorption in crash (KEC).
The AB12 control unit evaluates the data from the pressure sensors to detect side crashes and from the acceleration sensors to detect side, front and rear-end crashes. In accordance with the PSI5 standard, the peripheral sensors can be operated either on a sensor bus or via a point-to-point connection.