Verfahren zur Energie- und Datenübertragung in einem Bussystem für Insassenschutzeinrichtungen

摘要

The invention relates to a method for transmitting power and data in a bus system (5) provided for occupant protection devices (1.1), whereby, by means of the bus system (5), digital data is exchanged between a central processing unit (7) and a plurality of control modules (6) of occupant protection devices (1.1) which can be triggered. Said occupant protection devices are especially used in motor vehicles. The control modules are connected to said central processing unit in a communicative manner. According to the inventive method, power is supplied to the control modules (6) via the bus system (5). The energy stores (1.4) provided in peripheral control modules (6) of occupant protection devices (1.1) are discharged when the occupant protection device is triggered. Said energy stores must be recharged again after the triggering action. However, the bus system which is also required for transmitting data is subjected to a heavy load if the recharging process occurs immediately after triggering. The dynamic bus system load can be avoided such that the transmission of data to other control modules can be additionally guaranteed. This is achieved by suppressing the recharging of the energy stores (1.4) of the triggered occupant protection devices (1.1), preferably until a reset instruction is given. The invention also relates to the application of the method especially in a bus system provided for occupant protection devices (1.1) used in motor vehicles.