Measuring and control system for motor vehicle has optical detector for sensing obstacles, and uses e.g. radar to detect distance when visibility limit is reached

摘要

The system includes an optical detector (5) for sensing obstacles. The optical detector is used to define a visibility limit within which the obstacle is still detectable. When the limit is reached, the distance to the obstacle is detected using a distance detector such as a radar. The system produces a setting signal based on the measured signals from the distance detector, and the signal is used to adjust a component of the vehicle. The setting signal is defined in such a way as to limit the vehicle speed to a value corresponding to the measured distance. The braking pressure may be set based on the measured distance to the obstacle so that the vehicle can be braked within the visibility limit.