The BMW SBE2 Child Seat Detection System
Approximate weight of driver (occupant classification)
Drivers distance to airbag (out of position sensor)
Is the seat occupied at all? (seat occupation detection)
Is it occupied by a child seat? (child seat detection)
Child seat detection is especially important in two-seat vehicles like the Z3 roadster. This challenge is adressed by the upcoming BMW SBE2 system. Unlike some competitors strategies to install manual airbag deactivation switches or to develop a system that recognises only certain child seats equipped with electronic resonators, the BMW SBE2 system generally discriminates between adults and child restraints.
The sensor-principle is based on the measurement of two distinct physical properties, pressure profile and capacity. The employment of digital signal processing and pattern recognition algorithms enables a redundant, selfsupervising and fully-automatic detection system.
Keywordschild seat detection system capacitive-system occupant classification field detection system electric field smart airbag
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