Method and evaluation system for supervising correct belt utilization

摘要

A method and an evaluation system supervise correct belt utilization of at least one safety belt in a motor vehicle, the open and/or closed belt lock state being supervised at the respective belt lock of a vehicle seat occupied by a person and a warning signal being given and/or the safety system of the motor vehicle being influenced if an unclosed belt lock is detected. In particular, feigned belt utilization is also detected by evaluating the temporal sequence of belt lock actuations with respect to further operations and/or states determined in the motor vehicle.

主权项

1. A method for supervising correct belt utilization of a safety belt in a motor vehicle, comprising:
supervising belt lock state changes for a belt lock at a driver's seat of the motor vehicle, each belt lock state change being either a change from an open belt lock state to a closed belt lock state or a change from the closed belt lock state to the open belt lock state; emitting a warning signal and/or influencing a safety system of the motor vehicle if the open belt lock state is detected; and detecting feigned belt utilization at the driver's seat by evaluating the belt lock state changes with respect to door actuations in the motor vehicle, feigned belt utilization being detected if at least one of the following conditions is determined:
a driver's door has been unlocked from outside the motor vehicle and the closed belt lock state already existed before the driver's door was opened;there is no belt lock state change in a time period from opening of the driver's door until starting driving;a plurality of driving cycles are detected without any belt lock state change, each driving cycle comprising opening and closing of the driver's door; andthe closed belt lock state is maintained without a belt lock state change in a time period of from when the driver's door is locked from outside until a vehicle safety system has been entirely switched off.