Data transmission system for a motor vehicle, to trigger passenger protective systems on an impact, has side and frontal sensors transmitting to a control without synchronization and with independent time bases

摘要

The data transmission system in a motor vehicle (1) between a sensor transmitter (2.1,2.2) and a receiver (3) at a central control unit, with no direct synchronization between them, is for use to trigger the safety systems to protect the occupants on an impact collision. The sensors transmit data streams (2.1.1,2.2.1) from the side and the front of the vehicle. The transmitters and the receiver have independent time bases for each to generate an individual time interval. The transmitters transmit a defined number of data protocols for each fixed time interval. The received data are given a time stamp at a receiver interface. An interpolated or extrapolated data value is derived and produced on scanning the data from the interface, from a given number of time-stamped data stored intermediately at the interface.