Switching system for such as deactivation of a road vehicle air bag system uses Hall effect sensors to detect booth states of switch to avoid false condition

摘要

The airbag activation system for a road vehicle has a switching stage with a pair of Hall effect sensors (HS1,HS2) that react to the state of the on off activation element (4). The sensors connect with a processor (10) via connections that uses resistors (R1,R2, R3) to provide different currents for each switch position. This ensures that a false state cannot be obtained.