Occupant restraint system having serially connected devices, a method for providing the restraint system and a method for using the restraint system

摘要

An occupant restraint system (10) for a vehicle (22) has a plurality of controllable occupant restraint system devices (12). The plurality of devices (12) includes sensor devices (e.g., 12E) and/or occupant restraint devices (e.g., 12A). Each restraint system device (12) has programmable control circuitry (18) for permitting control of the respective restraint system device by a central controller (38). A control interconnection (44) connects the central controller (38) and the restraint system devices (12). Electronic switches (54) are connected in series along a line (46A) of the control interconnection (44). Each of the switches (54) is associated with one restraint system device (12). Each of the switches (54) regulates communication between the central controller (38) and any device(s) (12) (e.g., devices 2-N) downstream of the associated device (e.g., device 1). The control circuitry (18) causes the associated switch (54) to "close" and permit communication between the central controller (38) and the device(s) (e.g. , device 12-N), if any, downstream of the one restraint system device. The permitted communication is in response to the central controller (38) programming the control circuitry (18) of the one restraint system device. Methods for providing and using the vehicle occupant restraint system (10) are also provided.