| 摘要 |
Diver assistance system 12 comprises sensor system 22 for detecting a vehicle environment. A radiation source (e.g. diode lasers 26, 26 ) is installed in addition to (e.g. below) the sensor system. It emits detection beams in a radiation plane 28 at a predetermined height above ground. Data provided by the sensor system regarding detection of reflected beams is evaluated to determine whether the reflection 30 falls within a predetermined vehicle environment range (18, Fig.1). A detection signal is then selectively output if an obstacle 14 is detected at the predetermined height therein (e.g. collision warning or activation of another driver assistance system component). Thus low obstacles 16 which may safely be driven over are ignored. The radiation plane may be varied in height according to driving state or speed and compensated for vehicle tilt. |
